SEWAGE TREATMENT PLANT
Sewage Treatment Plant Manufacturer in India | STP Plant Solutions
A Sewage Treatment Plant (STP) is a critical infrastructure solution designed to treat domestic and industrial sewage, ensuring safe, compliant, and sustainable wastewater management.
As a trusted sewage treatment plant manufacturer in India, we provide advanced STP solutions that remove organic waste, solids, pathogens, and harmful contaminants using physical, biological, and chemical processes.
1. Introduction
Sewage generated from domestic and industrial sources contains organic matter, solids, oils, pathogens, and chemicals that can harm the environment and public health. An STP is designed to treat this wastewater efficiently and safely.
As a leading STP manufacturer in India, we deliver customized systems ensuring environmental compliance, water conservation, and sustainable wastewater management.
2. Why Install a Sewage Treatment Plant
Untreated sewage can cause:
- Contamination of water bodies
- Spread of waterborne diseases
- Violation of environmental regulations
- Increased freshwater consumption
Installing an STP provides:
- Regulatory compliance
- Freshwater conservation
- Reduced environmental footprint
- Safe water reuse
- Lower sewage disposal costs
3. Key Benefits
Environmental Compliance
Ensures treated sewage meets CPCB and SPCB discharge standards.
Freshwater Conservation
Enables reuse for irrigation, landscaping, and industrial applications.
Cost Efficiency
Reduces freshwater usage and operational disposal costs.
Public Health Protection
Eliminates pathogens and prevents waterborne diseases.
Sustainable Water Management
Promotes recycling and responsible water usage.
4. Core Features
Screening
Removes large debris and solid waste to protect equipment.
Grit Removal
Separates sand and heavy particles to reduce equipment wear.
Primary Settling
Removes suspended solids using gravity-based sedimentation.
Biological Treatment
Microorganisms degrade organic pollutants, reducing BOD and COD.
Clarification
Removes fine suspended solids for polished water quality.
Disinfection
UV or chemical treatment ensures pathogen-free treated water.
5. Technical Specifications
| Component | Specifications |
|---|---|
| Capacity Range | 1–5000 m³/day (customizable) |
| Wastewater Source | Domestic, commercial, industrial sewage |
| Primary Treatment | Screening, grit removal, settling |
| Secondary Treatment | ASP / MBBR / SBR biological systems |
| Tertiary Treatment | Clarification, disinfection, membrane filtration (optional) |
| Material of Construction | SS 304 / SS 316 / FRP |
| Automation | PLC / SCADA Monitoring & Control |
| Discharge Standards | CPCB / State Pollution Control Board compliant |
| Power Supply | 415 V / 3 Phase / 50 Hz |
| Maintenance | Routine cleaning and microbial monitoring |
6. Process Flow of STP
- Influent Screening: Removes large solids and debris.
- Grit Chamber: Separates sand and heavy particles.
- Primary Settling: Gravity-based solid removal.
- Biological Treatment: Microbial breakdown of organic matter.
- Clarification: Removes fine suspended particles.
- Disinfection: UV or chemical treatment for pathogen removal.
- Storage & Reuse: Treated water reused or safely discharged.
7. Industries Served
- Power Generation: Cooling water treatment and reuse.
- Oil & Gas: Treats drilling and refinery wastewater.
- Chemical & Fertilizers: Removes toxic contaminants.
- Hospitality: Kitchen and laundry wastewater treatment.
- Food & Beverage: Organic waste and oil removal.
- Textile Industries: Dye and chemical wastewater treatment.
- Real Estate: Sewage treatment for reuse in landscaping.
- Pharmaceuticals: Chemical wastewater treatment and compliance.
- Pulp & Paper: Treats industrial effluents for reuse or discharge.
8. Case Studies
Case Study 1: Residential Township STP – 1000 m³/day
Challenge: High sewage load from residential complex.
Solution: MBBR system with UV disinfection.
Outcome: Reused water for irrigation and reduced freshwater demand.
Case Study 2: Textile Industry STP – 500 m³/day
Challenge: High dye and chemical load in sewage.
Solution: ASP + tertiary treatment + chemical dosing.
Outcome: Color-free water suitable for reuse and compliant discharge.
Case Study 3: Hospitality STP – 200 m³/day
Challenge: Mixed wastewater from kitchen and laundry.
Solution: Biological treatment + UV disinfection.
Outcome: Safe reuse for landscaping and cooling systems.
Frequently Asked Questions (FAQs)
Pretreatment equipments are systems used to remove impurities, solids, and hazardous contaminants from water before advanced treatment stages like RO.
An STP treats domestic and industrial wastewater using physical, biological, and chemical processes to remove solids, pathogens, and harmful contaminants.
An STP treats domestic and industrial wastewater using physical, biological, and chemical processes to remove solids, pathogens, and harmful contaminants.
A company that designs, fabricates, and supplies STPs to industries and municipalities across India.
STPs are used in residential complexes, commercial buildings, hospitals, hotels, industrial plants, municipalities, and mixed-use developments.
Yes, STPs produce water suitable for irrigation, landscaping, cooling systems, or other non-potable applications.
Routine monitoring, cleaning, microbial checks, and chemical dosing adjustments are required to ensure efficiency.
Sewage types of Waste Water treated and processed as per clients or pollution control board norms form an integral part of our equipment supplies.
APK offers both customized and standardized Sewage Treatment Plants (STP) for Municipal Corporations, Industries, Housing Societies, Commercial Complexes, Hotels and Hospitals etc. Treatments Schemes are on the principle of Aerobic or Anaerobic Treatment and include
Primary treatment: In primary treatment, filtration and sedimentation takes place. Filtration refers to the process of filtering the water and the process in which the big and heavy substances settle in the water is known as sedimentation.
Secondary treatment or biological treatment: After primary treatment next is the secondary treatment it can also be called the biological treatment. In the process of secondary treatment aeration is done to the waste water this increase the oxygen in the water and helps bacteria growth. These bacteria then consume the water and reduce the BOD of the waste water subsequently treating it
Sewage Treatment Plant
Bar Screen A bar screen is a mechanical filter used to remove large particles from wastewater, such as rags and plastics.
Grit Removal Pretreatment may include a sand or grit channel or chamber, where the velocity of the incoming sewage is adjusted to allow the settlement of sand, grit, stones, and broken glass.
Flow Equalization Clarifiers and mechanized secondary treatment are more efficient under uniform flow conditions. Equalization basins provide a place to temporarily hold incoming sewage during plant maintenance and regular flow before it pumped to the treatment. Cleaning may be easier if the basin is downstream of screening and grit removal
Oil and Grease Removal In larger plants, Oil and grease are removed by passing the sewage through a small tank where skimmers collect the oil floating on the surface.
Secondary treatment may require a separation process to remove the micro-organisms from the treated water prior to discharge or tertiary treatment.
Secondary treatment removes dissolved and suspended biological matter with help of microorganisms.
In Secondary treatment System we use various treatment process some are highlighted below
Where the highest quality of effluent is required, a third (tertiary) stage of treatment can be used to remove most the remaining suspended organic matter from the effluent before it is discharged to a watercourse.
- To stabilize organic materials so that it may be securely disposed
- To transform sewage water into an effluent of suitable cleanliness that may be discharged into land, rivers, or the sea.
- Reduction of Biological Oxygen Demand (BOD)
- Reduction Carbon Oxygen Demand (COD)
- Maintaining PH
- On site assistance by qualified engineers
- Minimum or Zero discharge
- Colorless & odorless treated water
- Highly suitable for inconsistent sewage
- Recycling of waste water