The document reports on water quality test results from an environmental engineering lab that found several parameters exceeded Bangladesh standards, including color, turbidity, TDS, TSS, iron, arsenic, COD, BOD, and total coliform and fecal coliform counts. It also outlines a wastewater treatment process involving oxidation, nitrification, sedimentation, and denitrification to remove BOD and reduce sludge for effluent disposal.

1. Department of CEN, PCIU
Wastewater treatment
Environmental Engg. Lab-II
CEN 432
Credit :0.75
Md. Mehedi Hassan Masum
Lecturer
Department of Civil Engineering
Port City International University

2. Department of CE, CUET2
Water Quality Test
Introduction Result & Discussion Conclusion
Water Quality
Parameters
Experimental Value
Bangladesh
Standard, BECR,
1997
Unit Remarks
pH 7 6.5-9.2 None Satisfied
Color 45 25 PCU Not Satisfied
Turbidity 55 30 NTU Not Satisfied
TDS 2345 1000 ppm Not Satisfied
TSS 1112 - ppm Not Satisfied
𝐶𝑂2 4 - ppm Satisfied
Iron 7.58 1(5)* mg/l Not Satisfied
Arsenic 0.89 0.05 mg/l Not Satisfied
COD 6.74 4 mg/l Not Satisfied
BOD (20'C) 1.21 0.2 mg/l Not Satisfied
DO 2.65 6 mg/l Not Satisfied
TC 2 none n /100ml Not Satisfied
FC 1 none n/100ml Not Satisfied

3. 3
BOD removal treatment process
Introduction Result & Discussion Conclusion
Raw
Water
Oxidation of
Organic Carbon
Nitrification
Sedimentation
Tank
DenitrificationEffluent
Sludge
Disposal
Sedimentation Tank
Sludge
Disposal
Department of CEN, PCIU

4. 4 Department of CEN, PCIU

5. 5 Department of CEN, PCIU