STP Plant Manufacturer in India – Reliable Sewage Treatment Solutions by Koshish India

Water scarcity and strict wastewater discharge norms have made Sewage Treatment Plants (STP Plants) a necessity for modern infrastructure projects. Residential societies, commercial complexes, hospitals, hotels, and industries must treat sewage before discharge as per guidelines from the Central Pollution Control Board.

Koshish India is a trusted provider of advanced and cost-effective STP plant solutions in India, delivering customized systems that ensure environmental compliance and long-term operational efficiency. If you are searching for “STP plant manufacturer in India,” “STP plant cost per KLD,” “commercial STP plant installation,” “industrial sewage treatment plant supplier,” or “compact STP plant for apartments,” this detailed guide covers everything you need to know.

What is an STP Plant?

A Sewage Treatment Plant is a wastewater treatment system that removes contaminants such as:

Organic matter

Suspended solids

Oil and grease

Harmful bacteria and pathogens

Odor and color

After proper treatment, the water can be reused for:

Toilet flushing

Gardening and landscaping

Cooling towers

Construction activities

Industrial reuse

The main objective is to reduce BOD, COD, TSS, and microbial contaminants to meet discharge standards.

STP Plant Working Principle

The working process of an STP plant includes three key stages:

1. Primary Treatment

Bar screens remove large solid waste

Grit chambers eliminate sand and heavy particles

Primary clarifier settles sludge

This stage removes physical impurities from sewage.

2. Secondary (Biological) Treatment

Aeration tanks supply oxygen

Microorganisms break down organic pollutants

Secondary clarifier separates treated water from sludge

This stage significantly reduces organic load and improves water quality.

3. Tertiary Treatment

Pressure sand filters remove fine particles

Activated carbon filters eliminate odor and color

UV or chlorination ensures proper disinfection

The final treated water is safe