UASBR: An Effective Wastewater Treatment Option to Curb Greenhouse Gas Emissions - Management of Natural Resources in a Changing Environment - page 128

Flow (m3/d) OLR (Kg/m3/day)

5

4.5

4

3.5

3

2.5

2

1.5

1

0.5

0

1 11 21 31 41 51 61 71

Days

Fig. 5 Flow and OLR profile over the trial period

Conclusions

The results of the study reflect that UASBR is a cost effective option for the treat-
ment of IX resin manufacturing facility wastewater. The process is able to degrade
high molecular weight compounds through action of consortium of micro-
organisms.TheoptimumCODremovaleficiencyofreactorwas50%correspond-
ing to HRT and organic loading rate of 3 days and 4.5 kg/m 3 /day respectively which
is expected to improve over the extended period of operation. The stabilization/
acclimatization period for the system is 60 days with sludge recycling option for
reducing hazardous gases and to minimize shock loading. UASBR along with EASP
resultsinCODreductionupto95%.CostbeneitanalysisindicatesthatUASBRis
a better choice if compared to extended aerobic reactors. Moreover, UASBR is help-
ful in reducing green house gas emissions and a natural option to minimize global
warming.

Acknowledgements The authors gratefully acknowledge Ion Exchange (I) Ltd., Mumbai and
Ankleshwar for providing the support and infrastructure required during study.

References

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