Phosphate Removal in STP and ETP
Trity Enviro explains phosphate removal in STP and ETP: sources, norms, alum and ferric dosing, biological removal and a worked dosing example.
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
Hospital STP and ETP Guidelines in India
Trity Enviro explains hospital STP and ETP guidelines in India: BMW Rules standards, design per bed, treatment train, disinfection and records.
Ammonia and Nitrogen Removal in STP
Trity Enviro explains ammonia and nitrogen removal in STP: nitrification, denitrification, NGT norms, design numbers and a worked example for a 200 KLD plant.
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.
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.
POPULAR KNOWLEDGE
Featured Technical Reads
Incentivizing Water Reuse: Government Policies That Encourage Sustainable Practices
Explore government policies, subsidies, and incentives driving sustainable water reuse for industries, agriculture, and urban infrastructure in India.
PFAS Removal from Industrial Wastewater: Complete Guide (2026)
Complete guide to PFAS removal from industrial wastewater. Compare GAC, RO, ion exchange and AOP technologies, costs, and India's 2026 regulations.
ETP and STP Upgrades for Tamil Nadu Industries: Meeting TNPCB Wastewater Discharge Norms
Upgrade your ETP or STP to meet TNPCB norms in Tamil Nadu. Learn the warning signs, textile cluster challenges, reuse and ZLD options and upgrade costs.
PROVEN EXPERIENCE
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