Indian Journal of Science and Technology

Abstract

Flow design parameters are important in the sewerage system design. The purpose of this research is to verify the design flow parameters in the sewerage systems within a residential area at Kuantan, Pahang. The residential area selected in this research was Taman Pandan Damai. The population equivalent was surveyed at 2244. This research is in collaboration with national sewage company Indah Water Konsortium Sdn. Bhd. ISCO 4250 Area Velocity Flow meter was installed in the Manhole (MH k) after calibration was done. Real time sewage depth, flow rate and velocity data in the sewer was collected using an ultrasonic sensor attached to the flow meter. The flow design parameters were focused on per capita flow as well as design criterion. Based on the results obtained the average per capita flow was 0.36 m3 /day/person which is 60% higher than the 0.225 m3 /day/person recommended in the Malaysian Sewerage Industry Guidelines. Conversely, the result of design criterion was 2.61, 44% lower than 4.7 which is also stated in the Malaysian Sewerage Industry Guidelines. This indicated that the design of the sewerage system in Taman Pandan Damai was more than capable of catering to the population equivalent serviced in that area. In other words, reduction of sewer pipeline diameters may be possible for future sewerage system design. More comprehensive studies are needed to initiate the review of revised flow design parameters taking into account the rising cost of materials around the world.

Keywords: Design Criteria, Peak Flow Factor, Sewerage Network, Sewer, Wastewater Flow