Top 10 Sewage Treatment Plant Manufacturers in Maharashtra - Envocare Projects & Services

Top 10 Sewage Treatment Plant manufacturers in Maharashtra

Envocare Projects & Services is one of the leading Sewage Treatment Plant Manufacturers in Maharashtra, delivering advanced and customized sewage treatment solutions for residential, commercial, industrial, and institutional applications. With extensive industry experience and a proven engineering approach, we have successfully completed 500+ Water & Wastewater Treatment Projects, supported by a team of 50+ expert engineers and technical professionals, while operating and maintaining 120+ treatment plants for industrial and commercial clients. Trusted by 300+ satisfied clients, we design high-performance Sewage Treatment Plants (STPs) that ensure efficient wastewater treatment, water reuse, regulatory compliance, and long-term operational reliability.

Apart from being a trusted Sewage Treatment Plant Manufacturer in Maharashtra, Envocare Projects & Services is also recognized as one of the leading suppliers, dealers, and service providers of complete sewage and wastewater treatment solutions. We provide turnkey services including system design, manufacturing, supply, installation, commissioning, operation & maintenance (O&M), plant upgradation, and technical support. Our expertise includes Sewage Treatment Plants (STP), Effluent Treatment Plants (ETP), Water Treatment Plants (WTP), Reverse Osmosis (RO) Plants, and Zero Liquid Discharge (ZLD) Systems, helping clients achieve sustainable wastewater management, water conservation, environmental compliance, and cost-effective operations.

What is a Sewage Treatment Plant (STP)?

A A Sewage Treatment Plant (STP) is a wastewater treatment system that collects and treats domestic and commercial sewage before safe discharge or reuse. It uses physical, biological, and chemical processes to remove solids, organic matter, harmful microorganisms, nutrients, oil, and grease, while reducing pollutants such as BOD, COD, and TSS.

Treated water can be safely discharged or reused for non-potable purposes such as toilet flushing, landscaping, gardening, and cooling, in accordance with applicable standards. STPs support sustainable water management by reducing pollution, conserving freshwater, and enabling wastewater reuse.

How Does a Sewage Treatment Plant Work?

As experienced Sewage Treatment Plant Manufacturers in Maharashtra, we design and manufacture efficient wastewater treatment systems that process sewage through multiple stages. Each stage is designed to remove solids, organic pollutants, suspended particles, and harmful microorganisms to produce treated water suitable for reuse, recycling, or safe discharge, depending on the application and applicable standards.

Step Sewage Treatment Process Description
01 Preliminary Treatment – Screening & Grit Removal Incoming sewage passes through screens to remove large solids, plastics, rags, and other debris. Grit removal then separates sand, gravel, and other heavy particles, helping protect treatment equipment and maintain smooth plant operation.
02 Primary Treatment – Sedimentation During primary settling, heavier suspended solids settle at the bottom of the tank, while oil, grease, and floating impurities are removed from the surface. This reduces the solid and organic load before biological treatment.
03 Secondary Treatment – Biological Treatment Beneficial microorganisms break down dissolved and biodegradable organic matter present in the wastewater. This biological treatment significantly reduces pollutants and improves the quality of the treated water.
04 Tertiary Treatment – Filtration & Disinfection Advanced treatment methods such as fine filtration and disinfection remove remaining suspended particles and harmful microorganisms. Depending on the treatment quality achieved, the water can be considered for suitable non-potable reuse or compliant discharge.
05 Sludge Treatment & Management Sludge generated during the treatment process is collected and managed through processes such as thickening, dewatering, and, where applicable, anaerobic digestion. Proper sludge management supports safe disposal and potential beneficial reuse.

A well-designed Sewage Treatment Plant (STP) combines physical, biological, and advanced treatment processes to achieve consistent wastewater treatment performance. Depending on the project requirements, factors such as sewage characteristics, treatment capacity, available space, water-reuse objectives, and applicable discharge standards are considered when selecting the appropriate treatment technology.

Types of Sewage Treatment Plant

As Sewage Treatment Plant Suppliers in Maharashtra, we offer a wide range of advanced sewage treatment technologies tailored to different capacities, spaces, and operational requirements.

  • Moving Bed Biofilm Reactor (MBBR): The MBBR is an advanced Sewage Treatment Plant technology that uses specially designed floating bio-media to support the growth of beneficial microorganisms. It is ideal for commercial buildings, residential societies, and industries requiring compact, efficient, and low-maintenance wastewater treatment.
  • Sequential Batch Reactor (SBR): The SBR treats wastewater through sequential cycles of filling, aeration, settling, and discharge within a single tank. This system is well-suited for hotels, hospitals, institutions, and projects with fluctuating sewage flow.
  • Membrane Bioreactor (MBR): The MBR combines biological treatment with advanced membrane filtration to produce high-quality treated water and support efficient Water Recovery Facility operations. It is an excellent choice for projects that prioritize Water Reuse and require superior treatment performance in limited installation space.
  • Activated Sludge Process (ASP): The ASP uses aeration and naturally occurring microorganisms to efficiently remove organic pollutants from wastewater. This proven technology is widely preferred for large residential townships, industrial facilities, and municipal treatment projects with continuous sewage generation.
  • Extended Aeration System: This process is an enhanced biological treatment method that provides longer aeration time for improved wastewater purification and reduced sludge generation. It is suitable for commercial buildings, residential complexes, and decentralized wastewater treatment applications requiring simple operation.
  • Conventional Sewage Treatment Plant: It operates through multiple treatment stages, including Preliminary / Primary Treatment, Secondary (Biological) Treatment, and Tertiary Treatment & Disinfection, ensuring effective removal of pollutants. This system is commonly installed in large residential developments, industries, and Municipal Wastewater Treatment Plant projects where high treatment capacity is required.

Technical Comparison of Sewage Treatment Plant Technologies

Parameter MBBR SBR MBR ASP Extended Aeration Conventional STP
Technology Moving Bed Biofilm Reactor Sequential Batch Reactor Membrane Bioreactor Activated Sludge Process Extended Aeration Multi-stage Biological Treatment
Typical Capacity 25–5,000+ KLD 50–10,000+ KLD 50–5,000+ KLD 100–50,000+ KLD 25–2,000+ KLD 100–50,000+ KLD
Primary Biological Process Attached-growth biofilm Suspended-growth activated sludge Suspended growth + membrane filtration Suspended-growth activated sludge Suspended-growth activated sludge Primary + secondary biological treatment
Flow Handling Continuous Batch / Cyclic Continuous Continuous Continuous Continuous
Biological Reactor Aeration tank with floating bio-media SBR reactor basin Bioreactor + membrane tank Aeration tank Extended aeration tank Primary clarifier + aeration tank
Bio-Media / Membrane HDPE/PP floating media No fixed media UF/MF membrane modules No fixed media No fixed media Usually no specialized media
Typical Media Filling 30–60% Not applicable Not applicable Not applicable Not applicable Not applicable
Media Surface Area ~400–1,200 m²/m³ Not applicable Not applicable Not applicable Not applicable Not applicable
Typical MLSS 2,500–5,000 mg/L 3,000–5,000 mg/L 6,000–12,000 mg/L 2,000–4,000 mg/L 3,000–6,000 mg/L 2,000–4,000 mg/L
Typical F/M Ratio 0.10–0.40 0.05–0.20 0.05–0.15 0.20–0.50 0.05–0.15 0.20–0.50
Typical HRT 3–8 hr 6–12 hr/cycle 3–8 hr 4–8 hr 18–30 hr 6–10 hr
Typical SRT 10–30 days 15–30 days 20–60+ days 5–15 days 20–40 days 5–15 days
Aeration DO 2–4 mg/L 1.5–3.0 mg/L 1.5–3.0 mg/L 1.5–3.0 mg/L 1.5–3.0 mg/L 1.5–3.0 mg/L
BOD Loading 0.2–1.0 kg/m³·day* 0.1–0.5 kg/m³·day* 0.2–1.0 kg/m³·day* 0.3–1.2 kg/m³·day* 0.1–0.4 kg/m³·day* 0.3–1.0 kg/m³·day*
Secondary Clarifier Generally required Normally not required Not required Required Required Required
Typical BOD Removal 90–95%+ 90–95%+ 95%+ 90–95%+ 90–95%+ 90%+
Typical COD Removal 80–90% 80–90% 90–95%+ 80–90% 80–90% 80–90%
TSS Removal High after clarification Very high Very high / membrane-grade High after clarification High after clarification High after clarification
Typical Treated TSS ≤10–20 mg/L with tertiary treatment ≤10–20 mg/L Typically <5 mg/L ≤10–20 mg/L with tertiary treatment ≤10–20 mg/L ≤10–20 mg/L with tertiary treatment
Tertiary Treatment PSF/ACF + disinfection as required Filtration + disinfection as required Membrane filtration + disinfection as required PSF/ACF + disinfection as required Filtration + disinfection as required Generally required for reuse
Disinfection Options Chlorination / UV Chlorination / UV UV / Chlorination Chlorination / UV Chlorination / UV Chlorination / UV
Treated Water Quality Good–Very Good Very Good Excellent Good–Very Good Good–Very Good Good
Footprint Low Low–Medium Very Low Medium–High Medium–High High
Automation Level Medium–High High High Medium Medium Medium
PLC/SCADA Integration Available Recommended Recommended Available Available Available
Operational Complexity Medium Medium–High High Medium Low–Medium Medium
Sludge Generation Low–Medium Low–Medium Low Medium Low Medium–High
Energy Requirement Medium Medium–High High Medium Medium–High Medium
Typical Power Consumption ~0.5–1.0 kWh/m³* ~0.6–1.2 kWh/m³* ~0.8–1.5 kWh/m³* ~0.5–1.0 kWh/m³* ~0.6–1.2 kWh/m³* ~0.5–1.0 kWh/m³*
Water Reuse Suitability High with tertiary treatment High with tertiary treatment Excellent High with tertiary treatment Moderate–High High with tertiary treatment
Space Requirement Low Low–Medium Very Low Medium–High Medium–High High
Maintenance Requirement Low–Medium Medium Medium–High Medium Low–Medium Medium
Capital Cost Medium Medium–High High Medium Low–Medium Medium
Best Application Residential, commercial & industrial Hotels, hospitals & institutions Premium reuse & water recovery Large continuous-flow projects Small/medium decentralized STPs Large conventional projects

*Note: Indicative design ranges. Actual values depend on sewage characteristics, BOD/COD loading, temperature, treatment objectives, equipment selection, hydraulic conditions, and applicable discharge/reuse standards.

Recommended STP Selection by Application

Application Recommended Technology Typical Capacity Range Key Advantage
Residential Society MBBR / SBR 50–2,000 KLD Compact and reliable treatment
Commercial Building MBBR / MBR 25–1,000 KLD Compact footprint and water reuse
Hotel / Resort SBR / MBR 100–2,000 KLD Handles variable sewage flow
Hospital SBR / MBR 100–2,000 KLD High-quality treated water
School / Institution MBBR / Extended Aeration 25–500 KLD Simple operation and maintenance
Industrial Campus MBBR / ASP / SBR 250–10,000+ KLD Scalable biological treatment
Large Township ASP / MBBR / SBR 500–10,000+ KLD Suitable for continuous sewage generation
Municipal Project ASP / Conventional STP 1–50+ MLD Large-scale treatment capability
Water Reuse Project MBR 100–5,000+ KLD Superior filtration and reuse potential
Space-Constrained Project MBR / MBBR 25–5,000 KLD Reduced plant footprint

Manufacturer's Note

As an STP Manufacturer and Turnkey Wastewater Treatment Service Provider, we design each Sewage Treatment Plant based on the project's KLD/MLD capacity, inlet BOD, COD, TSS, sewage flow variation, hydraulic loading, organic loading, available area, treated-water reuse requirements, and applicable regulatory standards.

Our engineering approach includes technology selection, process design, equipment sizing, fabrication, installation, commissioning, automation, testing, operation and maintenance support. Depending on the project requirements, we provide MBBR, SBR, MBR, ASP, Extended Aeration, and Conventional STP solutions for residential, commercial, industrial, institutional, hospitality, healthcare, township, and municipal applications.

Key Features & Benefits of Sewage Treatment Plant

As STP Manufacturers and Suppliers in Maharashtra, we design and manufacture advanced Sewage Treatment Plants (STPs) with reliable treatment technology, durable construction, energy-efficient operation, and easy maintenance. Our solutions support effective wastewater management, water reuse, and compliance with applicable environmental standards.

  • High Treatment Efficiency: Our Sewage Treatment Plants effectively reduce pollutants, including BOD and COD, to deliver consistently treated wastewater.
  • Advanced Treatment Technology: We offer ASP (Activated Sludge Process), MBBR (Moving Bed Biofilm Reactor), and SBR (Sequential Batch Reactor) technologies for efficient and reliable sewage treatment.
  • Energy-Efficient Performance: Optimized plant designs and efficient treatment processes help reduce power consumption and operating costs while maintaining consistent treatment performance.
  • Compact & Durable Construction: Quality materials and space-efficient designs provide long service life, dependable operation, and minimal installation space.
  • Easy Operation & Low Maintenance: User-friendly controls and simplified maintenance requirements make plant operation convenient, reliable, and cost-effective.
  • Water Recycling & Reuse: Treated wastewater can be reused for toilet flushing, gardening, landscaping, and other suitable non-potable applications, helping conserve freshwater.
  • Environmental Compliance: Our STP and wastewater treatment solutions support effective wastewater treatment and help facilities meet applicable environmental and discharge requirements.
  • Reduced Operating Costs: Efficient treatment, optimized energy consumption, and water recycling can help lower overall water, maintenance, and wastewater management expenses.
  • Eco-Friendly Wastewater Management: Our sustainable sewage treatment solutions help minimize the environmental impact of untreated wastewater and promote responsible water management.
  • Customized STP Solutions: We design sewage treatment systems according to treatment capacity, wastewater characteristics, available space, site conditions, and specific application requirements.

Why Other Business choose our STP?

  • Customized STP Solutions: We design sewage treatment plants based on wastewater characteristics, treatment capacity, available space, and project-specific requirements to deliver optimum performance.
  • Advanced Treatment Technologies: Our systems incorporate proven technologies such as ASP, MBBR, SBR, MBR, and Extended Aeration to achieve efficient and reliable sewage treatment.
  • Superior Engineering & Durable Construction: We use premium-quality materials, corrosion-resistant components, and precision engineering to ensure long service life with minimal maintenance.
  • Complete Turnkey Execution: From system design and engineering to installation, commissioning, testing, and operator training, we provide complete end-to-end project execution.
  • Energy-Efficient & Cost-Effective Operation: Our sewage treatment plants are designed to reduce energy consumption, optimize operating costs, and maximize treatment efficiency.
  • Regulatory Compliance: Our STP systems are developed to meet CPCB, SPCB, and environmental discharge standards, ensuring safe wastewater disposal and water reuse.
  • Reliable Technical Support: Our experienced engineers provide prompt maintenance, troubleshooting, performance optimization, and after-sales support for uninterrupted plant operation.
  • Sustainable Water Management: Our sewage treatment solutions promote water recycling, water reuse, and environmental sustainability while helping reduce freshwater consumption and wastewater discharge.

Sewage Treatment Plant Case Studies

As a trusted Sewage Treatment Plant manufacturer and service provider, Envocare delivers customized STP solutions, including manufacturing, installation, commissioning, and upgradation for diverse applications.

Case Study 1: 500 KLD SBR Sewage Treatment Plant — Residential Township, Maharashtra, Maharashtra

Project Overview: Envocare Projects & Services designed and commissioned a 500 KLD Sewage Treatment Plant (STP) for a residential township in Maharashtra, Maharashtra. The plant was developed to reliably treat domestic sewage generated from residential buildings and common facilities while enabling treated wastewater reuse for non-potable applications.

The residential development had an estimated design population of approximately 2,500 people, with average sewage generation of around 450 KLD and peak flow reaching approximately 550 KLD.

Project Capacity 500 KLD
Technology Sequential Batch Reactor (SBR)
Application Residential Township
Location Maharashtra, Maharashtra
Design Population Approximately 2,500 people
Average Sewage Flow Approximately 450 KLD
Peak Sewage Flow Approximately 550 KLD
Scope Design, Manufacturing, Installation & Commissioning
Treated Water Reuse Flushing and Gardening
Reuse Quantity Approximately 350 KLD

Challenge: The township required a wastewater treatment system capable of handling daily variations in sewage flow while maintaining consistent treated-water quality. Since a significant portion of the treated water was intended for reuse, suitable tertiary treatment and disinfection were also required.

Client Requirements:

  • Reliable treatment of approximately 500 KLD sewage
  • Consistent biological treatment performance
  • Treatment of variable daily wastewater flows
  • Treated-water reuse for flushing and landscaping
  • Compact and practical plant layout
  • Easy operation and maintenance

Envocare's Solution: Envocare designed a customized 500 KLD SBR-based sewage treatment plant according to the project's hydraulic loading, wastewater characteristics, available space, and reuse requirements.

Treatment Process:
Screening → Grit Removal → Equalization → SBR Biological Treatment → Tertiary Filtration → Disinfection → Treated Water Storage → Reuse

The SBR process provided controlled biological treatment through programmed fill, aeration, settling, and decanting cycles. Tertiary treatment and disinfection were incorporated to improve treated-water quality for the intended reuse applications.

Treatment Performance:

Parameter Influent Target Treated Water
BOD (mg/L) Approximately 250 <20
COD (mg/L) Approximately 450 <50
TSS (mg/L) Approximately 300 <20

Project Outcome: The completed STP provided the residential development with a centralized wastewater treatment and recycling solution. Approximately 350 KLD of treated wastewater was made available for suitable non-potable applications, helping reduce dependence on freshwater for flushing and landscaping.

Project Delivered:

  • 500 KLD sewage treatment capacity
  • Automated SBR operation
  • Consistent biological treatment
  • Treated-water reuse
  • Reduced freshwater requirement
  • Integrated tertiary treatment and disinfection
  • Practical O&M access

Key Project Highlight: A 500 KLD SBR-based STP designed to treat residential sewage and support approximately 350 KLD of treated-water reuse.

500 KLD SBR Sewage Treatment Plant Residential Township Maharashtra Maharashtra
500 KLD SBR STP — Residential Township, Maharashtra, Maharashtra

Case Study 2: 250 KLD MBBR Sewage Treatment Plant — Commercial Business Park, Hinjewadi, Maharashtra

Project Overview: Envocare Projects & Services executed a 250 KLD MBBR Sewage Treatment Plant for a commercial business park in Hinjewadi, Maharashtra.

The facility generated wastewater from offices, washrooms, employee facilities, food-service areas, and other commercial activities. Due to limited space available for wastewater infrastructure, the project required a compact and efficiently arranged treatment system.

Project Capacity 250 KLD
Technology Moving Bed Biofilm Reactor (MBBR)
Application Commercial / IT Business Park
Location Hinjewadi, Maharashtra
Average Flow Approximately 220 KLD
Peak Flow Approximately 275 KLD
Treated Water Reuse Flushing and Landscaping
Reuse Quantity Approximately 160 KLD

Challenge: The main challenge was to provide reliable sewage treatment within a restricted installation area. The commercial facility also experienced fluctuations in wastewater generation due to variations in occupancy and operating schedules.

Client Requirements:

  • Compact installation
  • Stable biological treatment
  • Efficient use of available space
  • Easy operation
  • Reduced manual intervention
  • Treated-water reuse
  • Convenient maintenance access

Envocare's Solution: Envocare developed a compact 250 KLD MBBR sewage treatment system based on the site's hydraulic loading and treatment requirements.

Treatment Process:
Screening → Grit Removal → Equalization → MBBR Biological Treatment → Secondary Clarification → Pressure Sand Filtration → Activated Carbon Filtration → Disinfection

The MBBR process provided a robust biological treatment stage using attached microbial growth on specially designed bio-media.

Treatment Parameters:

Parameter Influent Target Treated Water
BOD (mg/L) Approximately 220 <20
COD (mg/L) Approximately 400 <50
TSS (mg/L) Approximately 250 <20

Project Outcome: The completed system provided the commercial facility with a compact and integrated wastewater treatment solution. Approximately 160 KLD of treated wastewater was available for suitable non-potable reuse applications.

Project Achievements:

  • 250 KLD treatment capacity
  • Compact plant configuration
  • Stable biological treatment
  • Tertiary filtration and disinfection
  • Treated-water reuse
  • Automated pumping and control
  • Simplified maintenance

Key Project Highlight: A space-efficient 250 KLD MBBR STP designed for a commercial facility with variable wastewater generation and treated-water reuse requirements.

250 KLD MBBR Sewage Treatment Plant Commercial Business Park Hinjewadi Maharashtra
250 KLD MBBR STP — Commercial Business Park, Hinjewadi, Maharashtra

Case Study 3: 1,000 KLD MBBR Sewage Treatment Plant — Industrial Campus, Chakan, Maharashtra

Project Overview: An industrial facility in Chakan, Maharashtra required a dedicated sewage treatment plant for domestic wastewater generated by employees, administrative facilities, toilets, canteen areas, and other domestic sources.

Envocare Projects & Services designed and commissioned a 1,000 KLD MBBR-based STP to provide reliable treatment while supporting the reuse of treated wastewater within the industrial campus.

Project Capacity 1,000 KLD
Technology MBBR
Application Industrial Campus – Domestic Sewage
Location Chakan, Maharashtra
Average Flow Approximately 850 KLD
Peak Flow Approximately 1,100 KLD
Treated Water Reuse Landscaping, Flushing and Utility Applications
Reuse Quantity Approximately 600 KLD
O&M 12 Months

Challenge: The facility experienced considerable variation in sewage generation depending on employee occupancy, working shifts, weekends, and holidays.

Another important engineering consideration was the separation of domestic sewage from industrial process wastewater. Since process effluent can have significantly different characteristics, the sewage treatment system was designed specifically for the domestic wastewater stream.

Envocare's Solution: Envocare developed a 1,000 KLD MBBR STP with adequate equalization and biological treatment capacity to accommodate variations in wastewater flow.

Treatment Process:
Coarse Screening → Fine Screening → Grit Removal → Equalization → MBBR → Secondary Clarification → Tertiary Filtration → Disinfection → Treated Water Storage

The system was designed around the expected hydraulic and organic loading of the domestic sewage stream.

Wastewater Characteristics:

Parameter Influent Target Treated Water
BOD (mg/L) Approximately 300 <20
COD (mg/L) Approximately 550 <50
TSS (mg/L) Approximately 350 <20
Oil & Grease (mg/L) Approximately 35 <10

Project Outcome: The 1,000 KLD STP provided the industrial campus with a dedicated system for managing domestic sewage. Approximately 600 KLD of treated wastewater was made available for suitable reuse applications.

Project Delivered:

  • High-capacity sewage treatment
  • Stable operation under variable hydraulic loading
  • Biological treatment through MBBR technology
  • Tertiary filtration and disinfection
  • Treated-water recycling
  • Integrated sludge management
  • 12 months O&M support

Engineering Highlight: The project demonstrates the importance of designing industrial-campus sewage treatment systems around actual flow variation and wastewater characteristics, rather than relying only on average daily sewage generation.

1000 KLD MBBR Sewage Treatment Plant Industrial Campus Chakan Maharashtra
1,000 KLD MBBR STP — Industrial Campus, Chakan, Maharashtra

Case Study 4: 300 KLD STP Upgradation & Retrofit — Residential Society, Maharashtra

Project Overview: An existing 300 KLD sewage treatment plant at a residential development in Maharashtra was experiencing operational and treatment-performance issues. Instead of completely replacing the existing plant, Envocare Projects & Services carried out a detailed assessment and implemented a combination of process, equipment, and automation upgrades.

Existing Capacity 300 KLD
Actual Flow 250–280 KLD
Technology MBBR
Application Residential Society
Location Maharashtra, Maharashtra
Scope STP Audit, Retrofit, Equipment Replacement, Process Optimization and Automation Upgrade
Project Duration Approximately 45 Days

Existing Problems:

  • Inconsistent treated-water quality
  • High suspended solids
  • Inadequate aeration
  • Blower-related problems
  • Poor sludge settling
  • High manual intervention
  • Inconsistent operation of treatment equipment
  • Limited monitoring and automation

Representative Performance Before Upgrade:

Parameter Before Upgrade
BOD 75 mg/L
COD 180 mg/L
TSS 110 mg/L
Power Consumption 420 kWh/day
Treated Water Reuse 120 KLD

Envocare's Approach: Envocare first conducted an assessment of the existing treatment process, equipment condition, hydraulic loading, and operational practices.

Retrofit Scope:

  • STP process audit
  • Hydraulic assessment
  • Blower inspection and replacement
  • Diffuser replacement
  • MBBR media assessment
  • Pump replacement
  • Clarifier optimization
  • Filter-media replacement
  • Disinfection improvement
  • Electrical-panel modification
  • Automation upgrade
  • Sludge-management improvements

The objective was to improve plant performance while making effective use of the existing infrastructure wherever technically feasible.

Performance After Upgradation:

Parameter Before After
BOD 75 mg/L <20 mg/L
COD 180 mg/L <50 mg/L
TSS 110 mg/L <20 mg/L
Power Consumption 420 kWh/day 340 kWh/day
Treated Water Reuse 120 KLD 210 KLD

Project Outcome: Following the upgrade, the plant provided improved treatment performance and increased treated-water availability for reuse.

The representative results indicate:

  • Approximately 19% reduction in daily power consumption
  • 90 KLD increase in treated-water reuse
  • Improved sludge settling
  • Improved treated-water quality
  • Reduced equipment-related downtime
  • Improved plant monitoring and automation

Key Project Highlight: STP upgradation can often improve treatment performance and operating efficiency without completely replacing the existing treatment infrastructure.

300 KLD STP Upgradation and Retrofit Residential Society Maharashtra Maharashtra
300 KLD STP Upgradation & Retrofit — Residential Society, Maharashtra

Case Study 5: 100 KLD Packaged MBBR Sewage Treatment Plant — Hotel / Resort, Maharashtra

Project Overview: A hotel/resort project in Maharashtra required a compact sewage treatment plant because of limited space available for conventional wastewater-treatment infrastructure.

Envocare Projects & Services designed and supplied a 100 KLD packaged MBBR STP suitable for the project's wastewater characteristics, available space, and treated-water reuse requirements.

Project Capacity 100 KLD
Technology Packaged MBBR
Application Hotel / Resort
Location Maharashtra
Average Flow Approximately 80 KLD
Peak Flow Approximately 110 KLD
Treated Water Reuse Gardening and Flushing
Reuse Quantity Approximately 65 KLD
Project Duration Approximately 35 Days

Challenge: Hotel wastewater generation can vary significantly depending on occupancy, events, restaurant activity, and seasonal demand. The project also had limited space for conventional civil construction.

Client Requirements:

  • Compact wastewater treatment
  • Minimal civil construction
  • Quick installation
  • Reliable biological treatment
  • Treated-water reuse
  • Simple maintenance
  • Flexible operation under variable loading

Envocare's Solution: Envocare developed a packaged MBBR STP incorporating the required biological, clarification, filtration, and disinfection stages.

Treatment Process:
Screening → Equalization → MBBR Biological Treatment → Clarification → Pressure Sand Filtration → Activated Carbon Filtration → Disinfection → Treated Water Storage

The packaged configuration reduced the requirement for extensive conventional civil construction and allowed the major treatment components to be integrated into a compact arrangement.

Wastewater Characteristics:

Parameter Influent Target Treated Water
BOD (mg/L) Approximately 250 <20
COD (mg/L) Approximately 450 <50
TSS (mg/L) Approximately 300 <20
Oil & Grease (mg/L) Approximately 40 <10

Project Outcome: The 100 KLD packaged STP provided the hotel with a compact wastewater-treatment solution while enabling approximately 65 KLD of treated wastewater to be reused for suitable non-potable applications.

Project Delivered:

  • Compact installation
  • Reduced civil construction requirement
  • 100 KLD treatment capacity
  • Biological treatment using MBBR
  • Tertiary filtration
  • Disinfection
  • Treated-water reuse
  • Faster site execution
  • Simplified maintenance

Key Project Highlight: A compact packaged STP can provide an effective wastewater-treatment solution for hotels and other sites where installation space and project timelines are major considerations.

100 KLD Packaged MBBR STP Hotel Resort Maharashtra
100 KLD Packaged MBBR STP — Hotel / Resort, Maharashtra

Applications of Sewage Treatment Plant (STP)

A Sewage Treatment Plant (STP) is designed to treat domestic sewage and wastewater generated from residential, commercial, institutional, industrial, and municipal activities. By removing organic matter, suspended solids, and other pollutants, an STP helps make treated water suitable for safe discharge or reuse, subject to applicable treatment standards and regulations. The major applications of Sewage Treatment Plants include:

  • Residential Areas – A Domestic Wastewater Treatment Plant treats sewage generated from apartments, housing societies, residential complexes, and townships, including wastewater from toilets, bathrooms, kitchens, and laundry. Treated water can be reused for suitable non-potable applications such as gardening and toilet flushing.
  • Commercial Buildings – A Sewage Treatment Facility manages wastewater from shopping malls, offices, commercial buildings, business parks, and retail establishments, including sewage generated by employees, visitors, sanitation facilities, and food courts.
  • Hotels & Resorts – A Water Reclamation Plant treats wastewater generated by guest rooms, restaurants, kitchens, laundry facilities, bathrooms, and housekeeping operations before suitable discharge or reuse.
  • Hospitals & Healthcare Facilities – A Sanitary Waste Treatment Plant treats domestic sewage from hospital toilets, bathrooms, staff areas, kitchens, and other facilities. Additional treatment may be required where wastewater contains specific healthcare-related contaminants.
  • Schools, Colleges & Hostels – A Sewer Water Treatment Plant manages wastewater generated by students, faculty, staff, kitchens, washrooms, and other sanitation facilities across educational campuses.
  • Municipalities & Urban Areas – A Municipal Sewage Treatment Facility collects and treats wastewater from residential and commercial areas through sewer networks, helping improve urban wastewater management and reduce the discharge of untreated sewage into natural water bodies.
  • Industrial Facilities – A Wastewater Treatment Plant can treat domestic sewage generated by employees and staff in factories, industrial estates, and manufacturing facilities. Industrial process wastewater generally requires specialized treatment through an Effluent Treatment Plant (ETP) or another process-specific system.
  • Airports & Railway Stations – A Wastewater Processing Plant efficiently treats large quantities of sewage generated by passengers, employees, restaurants, washrooms, and other amenities at transportation facilities.
  • Treated Wastewater Reuse – A Water Recycling Treatment Plant enables treated wastewater to be reused for landscaping, gardening, toilet flushing, road cleaning, cooling systems, and other suitable non-potable applications, depending on treatment quality and regulatory requirements.
  • Environmental Protection – A Water Pollution Control Plant helps prevent untreated sewage from entering rivers, lakes, streams, and groundwater. Effective sewage treatment reduces water pollution, limits the release of harmful contaminants, and supports the protection of aquatic ecosystems.

Envocare Projects & Services is a trusted Sewage Treatment Plant Manufacturer in Maharashtra, delivering advanced wastewater treatment solutions for residential, commercial, industrial, and institutional applications. As leading manufacturers, suppliers, dealers, and service providers, we provide complete turnkey solutions including system design, manufacturing, supply, installation, commissioning, operation & maintenance, and plant upgradation. Our advanced STP systems are engineered to maximize water reuse, reduce operating costs, ensure environmental compliance, and support sustainable water management. Backed by 500+ successfully completed Water & Wastewater Projects, 50+ expert engineers and technical staff, 120+ plants under operation & maintenance, and 300+ satisfied industrial and commercial clients, we deliver reliable, customized, and high-performance sewage treatment solutions tailored to every project's requirements. Contact Us today to discuss your sewage treatment requirements and receive a customized solution.

FAQ’s

A Sewage Treatment Plant (STP) treats domestic and commercial sewage by removing solids, organic matter, and harmful microorganisms. The treated water can be safely discharged or reused for suitable non-potable applications.

The cost of an STP depends on treatment capacity, technology, wastewater characteristics, and site conditions. The final cost is determined based on project requirements and the level of treatment required.

STP treated water is generally intended for non-potable applications rather than drinking. It can be reused for toilet flushing, gardening, landscaping, road cleaning, and cooling, depending on treatment quality and applicable requirements.

Chemical requirements vary depending on the STP design and treatment process. Chlorination and other disinfection methods may be used during tertiary treatment to control harmful microorganisms.

The main stages include preliminary treatment, primary sedimentation, secondary biological treatment, tertiary filtration and disinfection, and sludge treatment. Each stage removes specific pollutants from sewage.

Common STP technologies include MBBR, SBR, MBR, Activated Sludge Process (ASP), Extended Aeration, and Conventional STP. The suitable technology depends on capacity, wastewater characteristics, and available space.

MBBR (Moving Bed Biofilm Reactor) uses floating bio-media that support beneficial microorganisms for biological treatment. It is a compact and efficient solution for residential, commercial, and industrial applications.

SBR (Sequential Batch Reactor) treats sewage through filling, aeration, settling, and discharge cycles in a single tank. It is suitable for projects with fluctuating sewage flow.

MBR (Membrane Bioreactor) combines biological treatment with membrane filtration to produce high-quality treated water. It is suitable for advanced water reuse applications and projects with limited space.

BOD and COD indicate the level of organic pollutants in wastewater, while TSS represents suspended solid particles. STPs are designed to reduce these pollutants and improve treated water quality.

Treated STP water can be reused for toilet flushing, gardening, landscaping, road cleaning, and cooling systems. Reuse helps conserve freshwater and supports sustainable water management.

STPs are commonly used in residential societies, commercial buildings, hotels, hospitals, schools, industries, airports, railway stations, and municipal areas. They help manage sewage safely and efficiently.

An STP improves wastewater quality, reduces water pollution, and supports water recycling. It also helps conserve freshwater, reduce operating costs, and meet environmental requirements.

Sludge collected during treatment is processed and dewatered for safe disposal or beneficial reuse. Depending on the system, sludge may also undergo further treatment such as anaerobic digestion.

Envocare provides complete STP solutions including design, manufacturing, installation, commissioning, and operation & maintenance. The company offers customized and energy-efficient solutions using technologies such as MBBR, SBR, MBR, and ASP.


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