STP Performance in Winter: Problems and Fixes
Trity Enviro explains why STPs struggle in winter: slow nitrification, high ammonia, poor settling and foam. Practical fixes to keep treated water compliant.
ISO 9001:2015 & QCI Approved
STP & ETP Blog: Technical Guides on Wastewater Treatment
Our blog covers practical engineering topics for anyone planning or operating a Sewage Treatment Plant or Effluent Treatment Plant in India. You will find capacity calculation guides, technology comparisons like MBBR versus SBR versus MBR, industry specific treatment guides for pharma, textile and dairy effluent, and state wise pollution control board compliance requirements. These articles are written by our engineering team based on real project experience, not generic content, so you get information you can actually use when planning a plant or preparing for compliance.
Latest Technical Article
Nov 12, 2026
How to Choose an ETP Manufacturer in India
Trity Enviro gives a 12-point checklist to choose an ETP manufacturer in India: design basis, references, guarantees, AMC, consent support and red flags.
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KNOWLEDGE BASE
Latest Technical Articles
Is an STP Mandatory for Your Building? State-Wise Rules, Area Thresholds and RERA Implications
Is an STP required for your apartment, hotel or commercial building? Understand area thresholds, bye-laws, environmental clearance, consent and RERA impact.
STP Operation and Maintenance Checklist for Housing Societies: Daily, Weekly, Monthly and Yearly
A complete STP operation and maintenance checklist for housing societies: daily, weekly, monthly and yearly tasks, logbook, lab tests, spares and AMC scope.
STP Problems and Solutions: Foul Smell, Foaming, Sludge Bulking, Low DO and Turbid Outlet
Fix common STP problems: foul smell, foaming, sludge bulking, low DO, rising sludge and turbid outlet. Causes, quick tests and corrective actions explained.
Air Blower Selection for STP and ETP: How to Match Blower Capacity With Aeration Demand
Select the right air blower for your STP or ETP: compare lobe, screw and turbo blowers, size airflow and pressure from oxygen demand and cut aeration power.
STP Sludge Dewatering: How to Choose Between Filter Press, Screw Press and Other Systems
Compare filter press, screw press, belt press, centrifuge and drying beds for STP sludge. See cake dryness, polymer use, space and cost to choose well.
POPULAR KNOWLEDGE
Featured Technical Reads
Normal TDS Level in Drinking Water: BIS & WHO Safe Range Explained
Learn the normal TDS level in drinking water, BIS IS 10500 and WHO safe ranges, health effects of high/low TDS, and how to fix it with RO.
How Do ETPs and STPs Contribute to Resource Conservation?
How ETPs and STPs conserve water, energy, and nutrients in India, with real recovery data, and the large untapped potential still being missed.
OCEMS Installation Guide for Industries: Who Needs It, Analysers, PTZ Cameras and Portal Registration (2026)
Learn who needs OCEMS, how analysers, data loggers, PTZ cameras and the CPCB portal work together, plus calibration, uptime and vendor selection tips.
PROVEN EXPERIENCE
Featured Turnkey Installations
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