Original Articles
Arshad Husain, M. M. Ashhar an
Abstract
The objective of sewage treatment is to produce a disposable effluent without causing harm to the surrounding environment, and also prevent pollution. Industries produce large volumes of wastes that may include a wide variety of chemicals containing most toxic pollutants. Some of the industrial wastes can be treated jointly in municipal wastewater treatment plants, but others must be pretreated at the source. The present paper presents the analysis of the wastewater by finding out the values of various target parameters i.e. pH, alkalinity, hardness, chloride, COD and BOD so that wastewater characteristics of the area can be found out with the purpose of modifying the existing treatment scheme for the wastewater treatment being presently used. The pH of sample collected from Shah Jamal Ward No. 52 was lowest and its value was 6.3 i.e. more acidic than all other samples. The pH of sample collected from Shah Jamal Ward No. 54 was highest and its value was11.5 i.e. more basic than all other samples. Sample collected from Shah Jamal Eidgah Area reported least alkalinity of 180 mg/l as CaCO3. Sample collected from Sarai Rahman reported highest alkalinity of 600 mg/l as CaCO3. The highest total hardness level of 464.5 mg/l as CaCO3 was reported from slaughter house existing on Mathura Rd. area. The lowest total hardness value of 200 mg/l as CaCO3 was reported from Shah Jamal area. The highest values of chloride concentration of 428.3 mg/l were reported from Sarai Rahman area. The lowest chloride concentration of 119.5mg/l was reported from Shah Jamal ward No. 54 area. The least BOD5 value of 57 mg/l at 20° C was reported at Sarai Rahman area. Highest BOD5 value of 85.04 mg/l was reported at Shah Jamal Ward No. 64 area. Shah Jamal Ward No. 54 area has reported lowest COD value of 108.8. The highest value of COD was recorded as 158.5 mg/l at Shah Jamal Ward No. 52.