STP (Sewage Treatment Plant)
A Sewage Treatment Plant (STP) processes household and industrial sewage to remove contaminants, making the water safe for discharge or reuse.
Sewage Treatment Plant work is categorized in different stages and different ways with the help of different sizes and shapes STP Plant. But all the machines are designed and developed for working on the same core principle. Read the article to get detailed information on what is core principle of sewage treatment process and different style of treatment process.
But before that you should know that what a sewage treatment plant does.
A sewage treatment plant is designed for treating the wastewater which is generated from Houses, Commercial Building, Colony, Apartments, or Industries. The major focus of treatment
is on to removes contaminants that are harmful to the environment. In final, treated water quality is good enough for reusability (eg. farming, toilets, garden, cleansing) or to discharge into the rivers, ponds & other natural sources without any harm.
Working Of Sewage Treatment Plant is divided under three major Categories:
Primary Treatment
In the initial process, which is also known as preliminary treatment method, the most of the solid from the wastewater is removed. Process includes large filtering screens by which solid objects are removed. 60% of loose solid are settled in sink bottom, and water containing oil, grease and other harmful effluent (Chemical, Bacteria) remain floating .
Secondary Treatment
In the secondary phase of Sewage Treatment, the effluents are treated to remove the dissolve biological suspended. At his stage of separation process of treatment remove the micro-organisms.
Tertiary Treatment
This is the final stage of water treatment process; again, water goes to filters to remove more waste if any found which is left during secondary treatment. Then the wastewater is disinfected chemically through micro-filtration which filters the water completely before releasing it to the natural sources of water like- seawater, lakes, ponds, or for reusability.
Why Choose Nirmaan WaterTech for Your STP Plant?
Nirmaan WaterTech Solutions designs, supplies, and commissions Sewage Treatment Plants (STP) for residential complexes, commercial buildings, hotels, hospitals, and industrial townships all over India. Our STP plants are built to CPCB norms and are designed for low energy consumption, minimal maintenance, and consistent treated water quality.
Whether you need a compact STP for a small residential complex or a large-capacity plant for an industrial township, we size and configure the system to match your exact requirements.
Our STP Technologies
We offer STP systems based on the following treatment technologies:
- MBR (Membrane Bioreactor) — compact footprint, superior treated water quality, ideal for space-constrained sites
- SBR (Sequential Batch Reactor) — flexible, automated, suited for variable sewage loads
- MBBR (Moving Bed Biofilm Reactor) — robust biological treatment, easy to operate
Our STP Capacity Range
We supply STP systems from 5 KLD to 10 MLD. Our systems are designed for reuse-quality treated water — suitable for flushing, irrigation, and landscaping.
Who Needs an STP?
Under the Environment Protection Act and various state regulations, the following are required to install an STP:
- Residential societies, as per State Pollution Control Board norms
- Hotels, hospitals, and commercial complexes
- Industrial townships and SEZs
- Construction projects generating sewage during operations
Our Support
Our STP plants come with full civil drawings, electrical layouts, and operation manuals. We provide operator training and O&M (Operations & Maintenance) support to ensure your plant stays compliant at all times.
Frequently Asked Questions
How long does STP installation take?
For a standard STP between 50–500 KLD, installation and commissioning typically takes 4–8 weeks from the date of order.
What happens to the sludge generated?
Sludge from the STP is thickened and dried in sludge drying beds. The dried sludge can be used as manure for gardening and landscaping.
Is the treated water safe for garden use?
Yes. Our STP-treated water meets reuse standards and is safe for garden irrigation and toilet flushing.
Get an STP Quote
Share your project details — building type, number of users, and location — and we’ll send you a detailed STP proposal. Contact Nirmaan WaterTech at info@nirmaanwatertech.com.