Sewerage systems in Malaysia: a case study of Alur Setar and Sungai Petani towns / Azizan Md Saad and Shazali Mohammad Yusof

Need for the study of the sewerage system. Traditionally man has relied upon the natural degradation processes of micro-organisms which are present in the environment to decompose waste materials effectively. The discharge of solid and liquid waste to soil and water is an effective method of disposal provided that the load imposed upon the natural processes is not excessive. The industrial revolution and rapid and the problem associated growth of urban development·of nations communitiess created the of high volumes of wastes to be disposed off solely by the method of natural processes. It is therefore a necessity to study the different ways and methods of disposal of these wastes without significantly destroying the local environment and causing pollution to the natural water coarses. Hence the development of effective method of sewage treatment and disposal for large communities is a necessity. More recently there has been an increasing appreciation that man made pollution is a significant national and global problem. This has led to the formation of authorities with powers to improve the qualities of water and the imposition of stricter standards for sewage treatment.