|
KMID : 1024520100190111355
|
|
Journal of the Environmental Sciences
2010 Volume.19 No. 11 p.1355 ~ p.1362
|
|
|
Environmental Change and Its Enhancement of a Bay Sediment by Using Useful Microbial and Chemical Treatments
|
|
Cho Dae-Chul
Bae Hwan-Jin
Lee Jung-Yeol
Kwon Sung-Hyun
|
|
|
Abstract
|
|
|
|
This study was carried out in order to observe how the bay sediment would be changed with microbial treatments and a chemical oxidant like CaO2. The sediment during the treatments was analyzed in terms of pH, ORP, volatile organics content, COD, AVS, T-N, and T-P. With CaO2 treatment, pH was kept over 9.66 and ORP ranged from +4.70～+46.0, which meant an aerobic state meanwhile with the microbial treatment those were worse. In addition the chemical treatment showed better environmental index values than the microbial one: volatile organics content and COD values in the former were 12.9% and 37.9% while those in the latter were 4.5% and 18.7%, respectively. AVS and T-P were 71.1% and 100% versus 56.5% and 85.8%, respectively. However, the microbial treatment was better for T-N(66% higher). On the other hand, both treatment at a time enhanced all the environmental indices but COD meantime pH and ORP values were lower than with the chemical treatment only. Thus additional input of an oxygen generator like CaO2 could improve the environmental state of a bay sediment where the biological treatment is going on.
|
|
|
KEYWORD
|
|
|
Microbial, CaO2, Organic compounds, Oxidation reduction potential, Nitrogen and phosphorus removal
|
|
|
FullTexts / Linksout information
|
|
|
|
|
|
Listed journal information
|
|
|
|