Sewage Treatment Plant (STP)
Reliable STPs that meet CPCB/MPCB norms and turn sewage into safe reuse water.
“When your community stops depending on tanker water, the STP becomes more than a plant—it becomes a resilience engine.”
A sewage treatment plant (STP) is a facility designed to treat wastewater from households, commercial establishments, and industries to make it safe for environmental discharge or reuse. The treatment involves multiple stages: primary, secondary, and tertiary, which gradually remove physical, biological, and chemical contaminants from the sewage.
Design Considerations
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Bar screens and grit chambers for primary removal of large solids.
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Aeration tanks and biological reactors (e.g., activated sludge, sequencing batch reactors, membrane bioreactors) for secondary biological treatment.
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Clarifiers to separate solids from treated water.
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Tertiary treatment units such as sand filters, UV disinfection, chlorination, or membrane filtration for pathogen removal and polishing.
Key Components
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Bar screens and grit chambers for primary physical removal.
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Aeration tanks and clarifiers for biological treatment.
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Filters and disinfection units for tertiary treatment.
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Sludge digesters and dewatering units.
STPs help reduce water pollution, conserve water resources, protect public health, and generate energy and nutrients from waste, making them vital for environmental sustainability and urban development. Modern advances focus on efficiency, automation, and compliance with stringent environmental standards for safe water reuse and discharge.
Key Benefits
- Urban municipalities to treat domestic sewage from homes and commercial establishments.
- Industrial facilities require treatment of processed wastewater.
- Small-scale applications like housing complexes, hospitals, and commercial buildings using compact or modular STP units.
- Rural and agricultural areas for water reuse and irrigation as part of sustainable water management.
- Special facilities such as hotels, resorts, and institutions where sewage treatment and water conservation are important.
- Special facilities such as hotels and institutions where sewage treatment and water conservation are important.