Evaluation of the Treatment Processes of Industrial and Domestic Wastewaters at Talkha Power Plant | ||||
| Journal of High Institute of Public Health | ||||
| Article 13, Volume 32, Issue 3, July 2002, Page 593-614 | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jhiph.2002.211057 | ||||
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| Authors | ||||
| Sahr A. Taha1; Olfat D. EL-Sebaie2; Ghazy E. Abd EL-Karim2; Mohamed H. Ramadan2; Magda M. Abd EL-Atey2 | ||||
| 1Chemist at Talkha Generation Power Plant, Egypt | ||||
| 2Department of Environmental Health, High Institute of Public Health, Alexandria University, Egypt | ||||
| Abstract | ||||
| Talkha power plant [TPP] is the only power plant located in El-Mansoura city. It generates electricity using three different methods by steam turbine, gas turbine and combined cycle of steam and gas turbine using natural gas or light fuel oil. At TPP, there are one Industrial Wastewater Treatment Plant [IWWTP]and one Domestic Wastewater Treatment Plant [DWWTP). IWWTP is designed to treat wastes delivered from treatment processes of drinking water supply and process water supply as well as from operational processes in TPP. It includes chemical precipitation by Ferric Chloride and Poly-electrolyte, thickening by Calcium Hydroxide and flocculent agent , and membrane filter press. DWWTP is designed to treat the domestic wastewater delivered from 4500 inhabitants living within the premises of TPP. It is a compact plant including aeration, sedimentation, equalization, filtration, and chlorination. It also includes sludge thickeners and drying beds. This paper evaluated the efficiency of the IWWTP & DWWTP of TPP by comparing the treated effluent characteristics with standards of current regulations. It suggested the suitable measures to improve the efficiency of treatment plants. The study indicated that there were many sources of industrial waste generated from sand filters and carbon filters backwash, Lungstrom washing, sludge thickening and pressing, Demi-water plant blow-down, and floor washing. The evaluation of IWWTP indicated that the average removal efficiencies of TDS, SS, PO4 ,and NO3 were 73%, 98%, 39%, and 56%, respectively. The treated effluent still violates the law 48/1982 article No. 66, regarding temperature, pH, COD, SS, O&G and total coliforms. Furthermore, evaluation of DWWTP indicated that the plant effluent exceeded the maximum limits of O&G and bacteriological parameters. The results indicated that the treatment plant was efficient most of the time, where the plant average removal efficiency of BOD, COD, and SS were 96%, 92%, and 90%, respectively. Finally, the study recommended that in order to comply with the law limits, improvement measures should be applied. With regard to IWWTP, integrated wastewater management approach which includes in-plant modifications, in-process modifications, and end-of-pipe upgrading should be applied. With respect to DWWTP, gravity oil separators should be installed as primary treatment stage as well as chlorine dose and contact time should be adjusted correctly. | ||||
| Keywords | ||||
| Domestic; Industrial; Wastewater; Treatment; Power Plant; Efficiency; Law limits | ||||
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