ETP, STP, WTP ডিজাইন, Installation এবং DOE ছাড়পত্র — শুরু থেকে শেষ পর্যন্ত

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Water Exchange

A high-end environment consultancy firm in Bangladesh — ETP, STP and WTP design and installation, plus Department of Environment (DOE) water testing and clearance, from start to finish.

House# 396 (4th Floor), Road# 29, New DOHS Mohakhali, Dhaka 1212
team.waterexchange@gmail.com
+880 1338-950649

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Insights & Field Notes

Practical guides on treatment plants, DOE compliance and waste — plus research from our field work.

  • All posts 20
  • Water Treatment 7
  • Compliance 5
  • Waste Management 3
  • Research 2
  • Events 1
  • Energy 1
  • Training 1

Planning an ETP, STP or WTP?

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Featured · Water Treatment

20 Oct 2026· 2 min read

How an Effluent Treatment Plant Works: A Step-by-Step Guide for Factory Owners

From the equalization tank to the final clarifier — what happens to your wastewater at each stage of an ETP, and why every stage matters for DOE compliance.

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  • Compliance

    8 Oct 2026· 1 min read

    Getting an Environmental Clearance Certificate from the DOE: What You Need to Know

    Every industrial unit in Bangladesh needs an Environmental Clearance Certificate. Here is how the category of your project shapes the process and the documents you will need.

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  • Water Treatment

    24 Sept 2026· 1 min read

    Why Your Building Needs a Sewage Treatment Plant — and How to Size One

    Hospitals, apartment blocks and commercial buildings produce sewage every hour. A properly sized STP protects public health and keeps approvals on track.

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  • Compliance

    10 Sept 2026· 1 min read

    pH, BOD, COD and TSS: The Water Test Parameters Explained

    Your water test report is full of abbreviations. This plain-language guide explains what each key parameter measures and what a bad result usually means.

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  • Water Treatment

    27 Aug 2026· 1 min read

    Roots Blower or Turbo Blower? Choosing the Right Aeration Blower

    Aeration is often the largest electricity cost in a treatment plant. Here is how Roots and turbo blowers compare, and when each one makes sense.

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  • Research

    12 Aug 2026· 1 min read

    Assessing Plastic Waste Conditions in Cox’s Bazar and Rohingya Camps: A Baseline Survey

    A waste audit and baseline survey, including the registration of waste workers, to understand plastic waste conditions in Cox’s Bazar and the Rohingya camps.

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  • Waste Management

    29 Jul 2026· 1 min read

    Solid Waste Management for Industries: From Segregation to Safe Disposal

    Fabric scraps, packaging, sludge and chemical containers each need their own route. A simple waste plan keeps your factory compliant and can even earn revenue.

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  • Water Treatment

    15 Jul 2026· 1 min read

    Zero Liquid Discharge: Is It Right for Your Textile Factory?

    Zero liquid discharge recycles almost all of a factory’s wastewater. It saves groundwater but needs careful planning. Here is what is involved.

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  • Compliance

    30 Jun 2026· 1 min read

    Environmental Impact Assessment (EIA): What It Involves and Why It Matters

    Large projects need an EIA before they get environmental clearance. Here is what the study covers and how it shapes a better project.

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20 articles

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