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Journal of Applied Sciences
  Year: 2007 | Volume: 7 | Issue: 6 | Page No.: 815-819
DOI: 10.3923/jas.2007.815.819
 
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Low-Cost Wastewater Treatment Technology

B. Hegazy, M.A. El-Khateeb , A. El-adly Amira and M.M. Kamel

Abstract:
The present study aimed to investigate the using of cement kiln dust and/or rice straw for wastewater treatment. The experimental results showed that, by increasing the dose of cement kiln dust wastewater treatment process affected greatly. The reduction of TSS, COD and BOD was 94.7, 90.6 and 92.4%, respectively with using 2.75 g L-1cement kiln dust dose. Also, listeria, E. coli, Faecl coliform and Faecal streptococci were not detected when using this dose. On the other hand, using 2 g L-1 cement kiln dust dose E. coli and faecl coliform (FC) densities were 43 and 3.1x102 MPN/100 mL, respectively and salmonellae were not detected. This effluent was complied with WHO guidelines for wastewater reuse. The effluent water quality was improved when using rice straw as a filter (as a secondary treatment step). When using rice straw as the first step followed by treatment with 2 g cement dust, the reduction was 50, 32 and 35.3% for TSS, COD and BOD, respectively and 2 log units for TC, FC, E. coli, salmonellae and listeria. But when using rice straw as the second step after the treatment with 2 g L-1 cement dust kiln the reduction was 50% for COD, BOD and TSS. Listeria, FC and E. coli were not detected in this effluent. Thus, the combination of cement kiln dust and rice straw as a filter is considered as an efficient and low-cost technology for wastewater treatment and reuse.
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How to cite this article:

B. Hegazy, M.A. El-Khateeb , A. El-adly Amira and M.M. Kamel , 2007. Low-Cost Wastewater Treatment Technology. Journal of Applied Sciences, 7: 815-819.

DOI: 10.3923/jas.2007.815.819

URL: https://scialert.net/abstract/?doi=jas.2007.815.819

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