Evaluation of effluent water quality surrounding Sri Gading industrial zone Batu Pahat Johor

Abdul Latiff, Ab Aziz and Mohd Imran, Siti Nurulhuda and Ibrahim, Zulkiflee (2007) Evaluation of effluent water quality surrounding Sri Gading industrial zone Batu Pahat Johor. In: Persidangan Kebangsaan AWAM '07, 29-31 Mei 2007, Langkawi, Kedah.

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Abstract

A study was conducted in the year 2001 and 2005 to determine the extent of pollution in the Sri Gading Industrial Area in Batu Pahat, Johor. It was found that some owners of the industrial premises had discharged effluent with BOD, COD and SS more than the allowable discharge standards stipulated in the Environmental Quality Act 1974. It was found that six monitoring stations out often had values of BOD exceeded 100 mg/L which were 172, 152, 120, 174, 168 and 174 mg/L at stations 1, 3, 4, 5, 7 and 10, respectively. The studies were repeated in 2005 by taking samples at the same stations. The BOD concentrations measured in 2005 for the same stations were 80, 71, 16, 86, 430 and 95 mg/L, respectively. Every station showed improvement except station 7. The allowable BOD discharge limits were 20 and 50 mg/L for class A and B, respectively. In 2005, the effluent quality of 8 stations had improved compared to the quality measured in 2001. Only two stations indicated worsen discharged effluent quality. As for SS, the studies showed that there were improvements in all stations monitored. Highest value of SS of 536 mg/L at station 7 recorded in 2001 had actually improved to 38 mg/L in 2005. The water quality index (WQI) in the drainage channels surrounding the industrial area was found be 42.5 which indicated the water in channels were still polluted.

Item Type:Conference or Workshop Item (Paper)
Uncontrolled Keywords:BOD; COD; SS; WQI
Subjects:T Technology > TA Engineering (General). Civil engineering (General) > TA170-171 Environmental engineering
Divisions:Faculty of Civil and Environmental Engineering > Department of Water and Environment Engineering
ID Code:1897
Deposited By:Normajihan Abd. Rahman
Deposited On:04 Oct 2011 14:54
Last Modified:04 Oct 2011 14:54

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