Temporal evaluation of effluent treatment plant (ETP) and treatment of sludge produced by ETP. | [Journal of Chemical Society of Pakistan • 2007]

Author(s):

1. Mahtab Ahmad: Center for Environmental Protection Studies, PCSIR Laboratories Complex, Lahore, Pakistan

2. Muhammad Tariq: Center for Environmental Protection Studies, PCSIR Laboratories Complex, Lahore, Pakistan

3. Tahira Shafiq: Center for Environmental Protection Studies, PCSIR Laboratories Complex, Lahore, Pakistan

Abstract:

An effluent treatment plant (ETP) operating at an ice cream factory was evaluated for percentage removal of various pollution parameters in the wastewater. On the basis of 18 months regular analysis of untreated and treated effluent for various physical and chemical parameters, it was found that the percentage removal of most of the pollutants ranged from 83 - 100 %. ETP was found more efficient during summer than during winter seasons. The treated effluent falls well below the national environmental quality standards (NEQS) set by Pakistan environmental protection agency (EPA). Sludge generated as a result of effluent treatment was analyzed and treated by total fatty material (TFM) extraction, dewatering and drying. 96.62 % reduction in sludge weight was obtained after treatment. Treated sludge can then be safely applied or dumped on land.

Page(s): 611-616

DOI: DOI not available

Published: Journal: Journal of Chemical Society of Pakistan, Volume: 29, Issue: 6, Year: 2007

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