Tuesday 3 February 2015

Comparisons Between Chemical-Physical And Biological ETP

Comparisons between Chemical-Physical and Biological ETP are Given below:
TYPE OF INSTALLATION
CHE-PHY
BIOLOGICAL
General purifying yield
~50%
> 90%
COD/BOD Reduction
50-60%
90-95%
Color Elimination
Yes
Yes > 90%
Ammonia Elimination
No
Yes >95%
Nitrogen Elimination Total
~30%
>95%
Phenol Elimination
No
>90%
Final Salinity With Respect Water To be purified
Higher then input
Same as Input
Sludge produced per m3 of Effluent Treatment
6 kg
0.1-0.2 kg
Sludge produced per Kg of COD
1.8 kg
0.2 kg
Sludge character
Toxic
Non-Toxic
Sludge disposal
Very Difficult
Very-Easy
Running cost per m3 of Effluent Treatment
TK.25.0-30.0/-
TK.3.5-4.0/-
Initial cost (Chemical-Physical Base 100)
100
200/220
Space Occupied For 1000 m3 /day
300-350m3
At least 600 m3
Reliability
30%
80%
Possibility Fish Life Directly In Purified H20
No
Yes
Possibility Reuse of Purified Water for Irrigation
No
Yes
Compliance With European Laws (very strict)
No
Yes all
Produced of bad smell
Yes
No
Treatment Quality
Improper, Bangladesh Standard
Proper, European Standard

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