Sewage Treatment Plant Solutions
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Sewage Treatment Plant (STP) – Design, Manufacturing & Installation In India
Looking for a reliable STP manufacturer and installation partner for your residential, commercial, or industrial facility?
Plizma Technology delivers process-driven Sewage Treatment Plant (STP) systems engineered for real operating conditions — not just design assumptions. Domestic sewage flow often fluctuates with occupancy patterns, shift timings, and peak usage cycles. Parameters such as BOD, COD, TSS, ammonia, and oil traces can vary across sites. Our STP systems are designed around actual wastewater characteristics to ensure stable treatment and consistent CPCB/SPCB compliance.
✔ Complete Turnkey Execution – Design to Commissioning
✔ ISO Certified Company with 450+ Installations
✔ 11+ Years of Field Experience
✔ MBBR / SBR / MBR Based STP Systems
✔ Upgradation & Capacity Expansion Support
From new STP installations to plant upgradation and reuse-focused systems, our engineering team evaluates hydraulic load, inlet quality variation, and discharge/reuse norms before finalizing the most suitable process configuration for your site.
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How Does a Sewage Treatment Plant (STP) Work?
A Sewage Treatment Plant (STP) treats domestic wastewater to meet CPCB/SPCB discharge or reuse standards. However, effective STP design depends on actual hydraulic load, inlet BOD/COD levels, peak flow factor, and intended reuse application — not generic capacity assumptions.
The treatment process begins with screening and grit removal to eliminate floating and heavy solids. Equalization tanks then stabilize flow and organic load variations that typically occur due to occupancy changes and peak-hour discharge.
Wastewater then enters the biological treatment stage — Like MBBR, SBR, MBR — where microorganisms break down organic pollutants under controlled aeration. Key parameters such as MLSS, F/M ratio, dissolved oxygen, sludge age, and aeration efficiency are maintained to ensure stable BOD and COD reduction even during load fluctuations. Following biological treatment, secondary clarification separates treated water from biomass. A portion of sludge is recirculated to maintain microbial activity, while excess sludge is safely handled and dewatered.
Final polishing through pressure sand filtration, activated carbon filtration, and disinfection (UV or chlorination) ensures treated water meets discharge norms or reuse standards for flushing, landscaping, or cooling tower make-up.
For projects in space-constrained urban and industrial zones of Eastern India, compact and modular STP systems are designed to integrate biological and tertiary processes within an optimized footprint — ensuring stable long-term performance with minimal operational disruption.
Screening
Separates organic and inorganic matter from wastewater.
Grit Removal
Eliminates sand and other particles.
Primary Clarification
Removes solids and excess oil.
Secondary Treatment
Involves the aeration of organic matter by breaking down microorganisms.
Secondary Settling
Further separates water from solids.
Chlorine Treatment
Purifies water for final purification.
Sludge Management
Excess sludge is thickened for agricultural use.
INDUSTRIES WE SERVE
Why Choose Our STP Systems?
- Designed for Real Load Conditions: Engineered for hydraulic fluctuation and organic load variation.
- Right Technology Selection: MBBR / SBR / ASP / MBR chosen based on actual wastewater profile.
- Energy-Efficient Aeration: Optimized blower sizing for stable and cost-effective operation.
- Reliable Sludge Management: Controlled recirculation and safe handling systems.
- Compliance-Ready Performance: Designed to meet CPCB/SPCB discharge and reuse standards.
- Compact & Modular Options: Suitable for space-constrained residential, commercial, and industrial sites.
- Turnkey Execution Across India: Design, fabrication, installation, and commissioning under technical supervision.
- Ongoing Technical Support: Post-commissioning guidance for long-term stability.
- 250+ Installations Nationwide: 11+ years of proven STP execution experience.
Advantages Of Sewage Treatment Plant
The advantages of a Sewage Treatment Plant are listed below:
Urban & Decentralized STP Installations
MBR plants are applied in space-constrained urban locations to meet CPCB discharge and reuse norms without conventional clarifiers.
Industrial Campus & Facility Sewage Management
MBR systems are used for treating domestic sewage from industrial premises where compact design and consistent effluent quality are required for internal reuse.
Domestic Sewage Treatment & Reuse
MBR sewage treatment plants treat residential and commercial sewage to produce low-BOD, low-TSS water suitable for flushing, landscaping, and utility reuse.
Why Choose Plizma Technology for Your STP Project?
Plizma Technology designs compact and compliance-focused Sewage Treatment Plant (STP) systems in Kolkata and across Eastern India. Each system is engineered based on actual hydraulic load, BOD/COD levels, and reuse requirements to ensure stable long-term performance. Our STP solutions are suitable for residential, commercial, institutional, and industrial facilities, with optimized footprint, energy-efficient aeration, and structured sludge management. Key Features:
High Efficiency
Eco-Friendly Design
Hassle-Free Installation Process
Customizable Options
Reliable Performance
Sewage Treatment Plant (STP) – Design, Manufacturing & Execution
Plizma Technology delivers engineered Sewage Treatment Plant (STP) systems built for consistent biological performance and strict discharge or reuse compliance. We focus on process stability, not brochure claims. Our systems are designed to handle fluctuating domestic sewage loads, variable BOD/COD, suspended solids, nutrient removal requirements, and peak flow variations — fully customized to your site conditions and reuse objectives.
– Process design & engineering
– Manufacturing & fabrication
– Installation & commissioning
– Compliance trials & support
– Post-installation technical assistance
Operating across India and neighbouring countries, with strong execution in Eastern India.
Treatment Solutions We Provide
Plizma Technology delivers complete water and wastewater treatment solutions across industrial, commercial, and institutional sectors. Our scope covers raw water treatment, process water systems, wastewater treatment, and reuse-oriented solutions engineered as per site-specific requirements. Each solution is designed based on water characteristics, regulatory norms, process requirements, and long-term operational stability.
Water Treatment Plant
We offer a water treatment plant that improves the quality of water. Our solutions include industrial water supply, restoring ecological resources, and clean drinking water.
Municipal Waste Treatment
Plizma Technology is a leading municipal wastewater treatment service in Kolkata. We provide municipal waste solutions like sludge treatment, reusable material recovery, and sanitization technologies.
Urban Drinking Water Treatment
We are the leading company for providing urban drinking water treatment in Kolkata. We offer solutions such as ultrafiltration, reverse osmosis, ozonation, electrochlorination, and resin-based purification.
Rural Drinking Water Treatment
We provide the best rural water treatment in Kolkata. Our solutions include treating water from tube wells and rivers to remove harmful contaminants such as sewage, iron, and fluoride.
Our Approach!
Plizma Technology never compromises when it comes to designing and executing high-performance Sewage Treatment Plants (STP). We clearly understand the responsibility involved in treating domestic wastewater and ensuring it meets CPCB/SPCB discharge and reuse standards. Our engineering team focuses on process stability, odor control, sludge management, and long-term operational reliability. Every system is designed to effectively remove BOD, COD, TSS, pathogens, and nutrients, ensuring safe discharge or reuse for flushing, gardening, and utility applications.
With years of hands-on experience in sewage treatment across Bihar, Jharkhand, Odisha, West Bengal, Chhattisgarh, and the North Eastern States, we deliver solutions built for real site conditions and load variations. We prioritize quality fabrication, proper equipment selection, and practical execution to ensure consistent plant performance. Our focus is not just installation, but sustained compliance and smooth operation. You can connect with our experts to discuss your project requirements and technical queries in detail.
Have More Questions?
Feel free to reach us with all your custom queries if you don’t find the answer to your query in the following questions. We will reply at the earliest: