Introduction
Wastewater management has become an essential part of sustainable infrastructure, particularly in large residential, commercial, industrial and integrated development projects. A properly designed Sewage Treatment Plant (STP) helps treat wastewater before reuse or discharge while reducing the environmental impact of untreated sewage.
V AQUA Water Treatment Company provides customized wastewater treatment solutions for different capacities and applications. This case-study-style article discusses a 20 KLD STP Plant at Mahindra World City, Jaipur, highlighting the treatment concept, major equipment, MBBR-based biological treatment and tertiary filtration requirements.
Mahindra World City Jaipur is a large integrated development with industrial, commercial and social infrastructure. Mahindra has also highlighted sewage treatment and treated-water reuse as part of its sustainability practices at the development.
Important specification note: The technical-commercial PDF supplied for preparing this article contains a 20 KLD ETP proposal, not a document specifically identifying a 20 KLD STP installed at Mahindra World City Jaipur. Therefore, the Jaipur project description below should be treated as the requested project presentation, while detailed equipment specifications are reproduced from the supplied 20 KLD ETP offer and should not be represented as independently verified specifications of the Jaipur installation.
20 KLD STP Plant Project Overview
A 20 KLD sewage treatment system is designed for wastewater flows of approximately 20,000 litres per day. Such systems can be suitable for smaller developments, residential complexes, commercial facilities, institutions, hospitality projects and other applications where controlled sewage treatment and treated-water reuse are required.
For a project such as Mahindra World City Jaipur, wastewater treatment can support the broader objective of reducing freshwater consumption and increasing the reuse of treated wastewater.
The supplied V AQUA technical proposal demonstrates a treatment approach combining physical treatment, chemical treatment, biological treatment and tertiary filtration. The proposed 20 KLD ETP technology is specified as:
Physico-Chemical Treatment + MBBR Biological Treatment + Tertiary Filtration.
Why a 20 KLD Sewage Treatment Plant Is Important
Untreated sewage contains suspended solids, organic matter, nutrients, grease and other contaminants. If released without adequate treatment, it can adversely affect soil and water resources.
A properly engineered STP can help:
- Reduce organic pollution in wastewater
- Reduce suspended solids
- Improve treated-water quality
- Support wastewater recycling
- Reduce dependence on freshwater for suitable non-potable applications
- Improve environmental compliance
- Support sustainable water management
- Provide a controlled approach to sludge handling
For facilities where treated water can be reused for landscaping, flushing or other suitable applications, an STP can become an important component of an overall water-management strategy.
MBBR Technology for Wastewater Treatment
Moving Bed Biofilm Reactor (MBBR) technology is a biological wastewater-treatment process in which microorganisms grow on specially designed carrier media.
The MBBR process provides a surface area for microorganisms to grow and interact with wastewater. Aeration supplies oxygen to support biological activity.
The supplied V AQUA proposal specifies MBBR media of approximately 1.5 m³, with the media described as PVC and sized at approximately 16 × 22 mm.
For a compact wastewater-treatment system, MBBR can be integrated with preliminary treatment, clarification and tertiary filtration to create a multi-stage treatment process.
20 KLD Wastewater Treatment Process
The treatment sequence described in the supplied V AQUA 20 KLD proposal is:
Bar Screen Chamber → Oil & Grease Trap → Equalization Tank → Reaction Tank → Primary Tube Settler → Aeration Tank with MBBR Media → Secondary Settling Tank → Chlorination Tank → Pressure Sand Filter → Activated Carbon Filter → Treated Water Tank / Reuse.
Each stage performs a specific treatment function.
Bar Screen Chamber
The bar screen is the first stage of the treatment system. It is designed to remove larger floating and suspended materials from incoming wastewater.
The supplied specification includes a 500–600 mm bar screen made from SS304, with a coarse screen opening of approximately 8–10 mm.
Regular removal of trapped solids is important for maintaining smooth downstream operation.
Oil and Grease Removal
The oil and grease trap helps separate floating oils, grease and similar materials before wastewater reaches subsequent treatment stages.
Removing these substances at the preliminary stage can help protect pumps, piping and biological-treatment processes from excessive grease accumulation.
Equalization Tank
An equalization tank helps manage fluctuations in wastewater flow and characteristics.
The supplied 20 KLD proposal specifies:
- Capacity: 20 KL
- Construction: Civil/RCC
- Wall thickness: 200 mm
- Scope: Client
These specifications are directly stated in the supplied commercial proposal.
Equalization is particularly useful when wastewater generation varies throughout the day because it helps provide a more controlled flow to downstream treatment stages.
Chemical Treatment and Reaction Tank
The physico-chemical section is used to support the removal of suspended and colloidal impurities through chemical dosing and reaction.
The supplied proposal includes chemical dosing arrangements for:
- Alum
- Polyelectrolyte
- pH correction
- Chlorination
The proposal lists three 100-litre HDPE chemical tanks and three chemical dosing pumps rated at approximately 10 LPH.
Chemical dosing requirements should be adjusted according to actual wastewater characteristics and operating conditions.
Primary Tube Settler
The tube settler provides enhanced clarification by allowing suspended particles and chemically formed flocs to settle.
The supplied proposal specifies a 5 KL MSFRP tube settler tank and approximately 1.0 m³ tube deck media, made from PVC and sized at 150 × 750 mm.
The tube-settling stage helps reduce the solids loading entering the biological-treatment section.
MBBR Aeration Tank
The aeration tank is one of the most important biological-treatment stages.
In the MBBR process, carrier media remain within the aerated tank, providing a surface on which microorganisms can grow. These microorganisms contribute to the biological degradation of biodegradable organic matter.
The proposal specifies:
- MBBR tank: 2 Nos.
- Total capacity: 8 KL
- Capacity per tank: 4 KL
- Material: MSFRP
- Thickness: 5 mm
- MBBR media: 1.5 m³
These details are taken from the supplied technical proposal.
Aeration and Air Blower System
Adequate aeration is essential for biological wastewater treatment.
The supplied equipment schedule specifies:
| Parameter | Specification |
|---|---|
| Equipment | Air Blower |
| Quantity | 2 Nos. |
| Type | Twin Lobe |
| Air Flow | 25 m³/hr |
| Speed | 1450 RPM |
| Motor | 2 HP |
| Make | AMIKON |
The proposal also includes an air-purging grid and air diffusers for distributing air through the biological-treatment section.
Secondary Settling
After biological treatment, the wastewater moves toward clarification, where biological solids can be separated from the treated water.
The settling stage is important because excessive suspended biological solids should not be carried into the tertiary filtration system.
Sludge generated during clarification needs to be monitored and removed as required for reliable operation.
Chlorination
Chlorination is included as a disinfection stage before tertiary filtration and final reuse in the supplied treatment scheme.
The proposal identifies chlorine dosing as one of the chemical-treatment systems included in the project scope.
The actual chlorine dose should be determined based on treated-water quality, chlorine demand and the intended reuse application.
Pressure Sand Filter
The Pressure Sand Filter, or PSF, provides additional filtration of suspended particles following biological and clarification stages.
The supplied specification includes:
- Quantity: 1 No.
- Type: Vertical
- Capacity: 4 KL/hr
- Material: FRP
- Diameter: 400 mm
- Height: 1650 mm
The filtration stage helps improve the physical quality of treated water before final polishing.
Activated Carbon Filter
The Activated Carbon Filter, or ACF, provides another polishing stage and can help reduce colour, odour and certain organic compounds.
The supplied specification includes:
- Quantity: 1 No.
- Type: Vertical
- Capacity: 4 KL/hr
- Material: FRP
- Diameter: 400 mm
- Height: 1650 mm
Treated Water and Reuse
The final treated-water stage is intended to provide water suitable for an appropriate reuse application after meeting the required quality parameters.
The supplied 20 KLD proposal identifies gardening, irrigation and flushing as intended treated-water end uses.
For an integrated development such as Mahindra World City Jaipur, wastewater reuse can contribute to reducing the requirement for freshwater in suitable non-potable applications.
20 KLD STP Plant Product Specifications
The following table summarizes the principal specifications available from the supplied V AQUA 20 KLD technical-commercial proposal.
| Equipment | Specification |
|---|---|
| Plant Capacity | 20 KLD |
| Treatment Technology | Physico-Chemical + MBBR + Tertiary Filtration |
| Air Blower | 2 Nos., Twin Lobe |
| Blower Capacity | 25 m³/hr |
| Blower Motor | 2 HP |
| Blower Speed | 1450 RPM |
| Effluent Feed Pump | 2 Nos. |
| Feed Pump Capacity | 2 KL/hr × 10 m head |
| Feed Pump Motor | 1 HP |
| Filter Feed Pump | 2 Nos. |
| Filter Feed Capacity | 4 KL/hr × 28 m head |
| Filter Feed Motor | 1 HP |
| Chemical Tanks | 3 Nos. × 100 L |
| Chemical Dosing Pumps | 3 Nos., 10 LPH |
| Air Diffuser | 150 × 610 mm, EPDM |
| Sludge Feed Pumps | 2 Nos. |
| Sludge Pump Capacity | 2 KL/hr × 20 m head |
| Sludge Pump Motor | 1 HP |
| Multi-Grade Filter | FRP, 4 KL/hr |
| MGF Size | Dia. 400 × 1650 mm |
| Activated Carbon Filter | FRP, 4 KL/hr |
| ACF Size | Dia. 400 × 1650 mm |
| Tube Deck Media | 1.0 m³ |
| MBBR Media | 1.5 m³ |
| Sand Media | 200 kg |
| Carbon Media | 50 kg |
| Online pH Meter | 0–14 range |
| Bar Screen | SS304, 8–10 mm coarse screen |
| Tube Settler Tank | 5 KL, MSFRP |
| MBBR Tanks | 2 Nos., 4 KL each |
| Equalization Tank | 20 KL, Civil/RCC |
| MCC | 1 No., Wall Mount |
The equipment data above is based on the supplied commercial proposal and should be verified against the final project-approved design before being used as an as-built specification.
Major Equipment Included in the Treatment System
The supplied proposal identifies several major components, including:
- MBBR media
- Tube settler media
- Coarse bubble diffusers
- Alum dosing system
- Polyelectrolyte dosing system
- pH correction dosing system
- Chlorine dosing system
- Filter-feed pumps
- Sludge-transfer pumps
- Pressure Sand Filter
- Activated Carbon Filter
- Electrical control panel
- Inlet and outlet flow meters
- Electrical cabling and accessories
- Instruments and level switches
- Prefabricated MSFRP process tanks
Electrical and Control System
Reliable electrical and control systems are necessary for operating pumps, blowers, dosing equipment and other STP components.
The supplied V AQUA documentation includes an MCC and specifies cabling and earthing according to site requirements.
The final electrical configuration should be selected according to the approved equipment list, connected load, site conditions and project requirements.
Installation and Commissioning of a 20 KLD STP
Installation of a sewage treatment plant involves more than placing equipment at the site. A typical project execution process includes:
- Site inspection and requirement assessment
- Finalization of the treatment process
- Equipment manufacturing and procurement
- Civil-foundation preparation
- Equipment positioning and installation
- Interconnection of tanks and equipment
- Pump and blower installation
- Electrical panel installation
- Piping and valve connections
- Instrumentation installation
- Water trials
- Testing and commissioning
- Operator training
- Performance monitoring
Proper commissioning is essential because biological treatment performance depends on operating conditions, loading, aeration, retention time and wastewater characteristics.
Benefits of a 20 KLD MBBR STP Plant
A properly designed MBBR-based wastewater-treatment system can provide several operational benefits:
Compact Treatment Configuration
MBBR systems can provide substantial biological treatment within comparatively compact reactor volumes because microorganisms grow on carrier media.
Multi-Stage Treatment
Combining preliminary, chemical, biological and tertiary treatment provides multiple barriers for wastewater contaminants.
Treated-Water Reuse
After achieving the required quality, treated wastewater can potentially be reused for applications such as landscaping, irrigation or flushing, subject to applicable standards and site requirements.
Reduced Freshwater Demand
Reusing appropriately treated wastewater can help reduce freshwater consumption for non-potable applications.
Flexible Application
20 KLD wastewater-treatment systems can be adapted for various small and medium-scale commercial, residential and institutional applications.
Maintenance Requirements for a 20 KLD STP
Regular maintenance is essential for consistent STP performance.
Important activities include:
- Cleaning the inlet screen regularly
- Removing accumulated oil and grease
- Monitoring equalization-tank levels
- Checking chemical dosing
- Monitoring pH
- Inspecting pumps
- Checking blower operation
- Cleaning air filters
- Inspecting air diffusers
- Monitoring sludge levels
- Backwashing filtration systems
- Checking pressure indicators
- Inspecting electrical panels
- Monitoring treated-water quality
The supplied V AQUA documentation also emphasizes regular housekeeping, filtration maintenance, sludge monitoring and blower maintenance as part of routine operation.
V AQUA Water Treatment Company
V AQUA Water Treatment Company operates in the water and wastewater-treatment sector and provides solutions including RO plants, industrial and commercial RO systems, water softeners, UF systems, STPs and ETPs.
The supplied company profile describes V AQUA as a Delhi/NCR-based water-treatment company serving applications across residential, hospitality, manufacturing, pharmaceutical and other sectors.
The company’s wastewater-treatment portfolio includes systems designed around different capacities and treatment requirements.
Why Choose V AQUA for an STP Plant?
Selecting an STP manufacturer involves considering design, equipment selection, installation, commissioning, operation and after-sales support.
V AQUA focuses on:
- Customized wastewater-treatment solutions
- MBBR-based treatment systems
- Quality equipment selection
- Complete system integration
- Installation and commissioning
- Commercial and industrial wastewater solutions
- Water recycling and reuse solutions
The supplied proposal specifically covers supply, installation, testing and commissioning for the 20 KLD treatment system.
V Aqua Water Treatment Company
Contact at : 9560654995, Emails: sales@vaqua.in
Applications of 20 KLD STP Plants
A 20 KLD sewage treatment plant can be considered for applications such as:
- Residential societies
- Apartment complexes
- Hotels and resorts
- Schools and educational institutions
- Hospitals and healthcare facilities
- Commercial buildings
- Offices
- Institutional campuses
- Small industrial facilities
- Warehouses and business parks
- Integrated developments
The final STP capacity should always be selected after evaluating actual sewage generation, peak flow, occupancy, wastewater characteristics and future expansion requirements.
Sustainable Wastewater Management at Mahindra World City Jaipur
Mahindra World City Jaipur is an integrated development where sustainable infrastructure and water management are important considerations.
Mahindra has publicly described the use of sewage treatment plants and treated wastewater for landscaping as part of its sustainability approach. This makes wastewater treatment and reuse particularly relevant when discussing sustainable water management in the development.
For any specific installation, however, the actual plant capacity, technology, equipment and performance should be confirmed through the project’s approved technical documentation.
Commercial and Technical Considerations
The supplied V AQUA commercial proposal for the 20 KLD ETP lists a plant cost of ₹5,90,000, with installation included. Freight and transportation, site plumbing materials and GST were listed separately. The proposal specifies a one-year manufacturing warranty.
These commercial figures belong to the supplied 20 KLD ETP proposal for Sona Shree Foods Pvt. Ltd. and should therefore not be presented as the commercial price of a 20 KLD STP installed at Mahindra World City Jaipur.
Conclusion
A well-designed 20 KLD STP Plant can provide an effective wastewater-management solution for developments where sewage treatment, environmental protection and treated-water reuse are important priorities.
The treatment configuration discussed in the supplied V AQUA proposal combines preliminary treatment, chemical treatment, tube clarification, MBBR biological treatment, secondary settling and tertiary filtration. The system includes equipment such as MBBR media, air blowers, pumps, chemical dosing systems, tube settler media, pressure sand filtration and activated carbon filtration.
For projects in Jaipur and across India, the right STP design should be based on actual sewage generation, wastewater characteristics, required treated-water quality, available space and intended reuse.
V AQUA Water Treatment Company provides STP and wastewater-treatment solutions for residential, commercial and industrial applications, with system configurations tailored to project requirements.
Frequently Asked Questions About 20 KLD STP Plants
What is a 20 KLD STP plant?
A 20 KLD STP is a sewage treatment plant designed around a treatment capacity of approximately 20,000 litres of wastewater per day.
What technology is used in the V AQUA 20 KLD proposal?
The supplied proposal specifies Physico-Chemical + MBBR Biological Treatment + Tertiary Filtration.
What is MBBR in an STP?
MBBR stands for Moving Bed Biofilm Reactor. It uses carrier media inside an aerated biological reactor to provide surfaces for microorganisms involved in biological wastewater treatment.
Can treated STP water be reused?
Yes, appropriately treated wastewater can be reused for suitable non-potable applications such as gardening, irrigation and flushing, provided the treated water meets the applicable quality requirements. The supplied proposal identifies these applications as intended end uses.
How much space is required for a 20 KLD STP?
Space requirements vary according to the treatment technology, tank configuration, equipment arrangement, civil construction and site layout. A detailed site assessment is required before finalizing dimensions.
Who manufactures STP plants in Jaipur and across India?
V AQUA Water Treatment Company provides sewage and wastewater-treatment solutions for different applications and capacities, including MBBR-based systems.
What maintenance does an STP require?
Routine maintenance generally includes screen cleaning, oil and grease removal, pump inspection, blower maintenance, chemical-dosing checks, sludge management, filter backwashing and treated-water-quality monitoring.
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