The performance of conventional sewage treatment plant in Kelantan

Abstract

Recently, a lot of domestic wastewater is being generated due to the rise in the population in most urban areas in Malaysia. This implies that more contaminations are being produced which are likely to affect human health. There for, it is obligatory for wastewater in urban areas and settlements to be treated before settled into surface waters. This study aims some results and discusses the appropriate design, workflow process of the system to handle Kota Bharu’s wastewater treatment. There are four types of sewage treatment plants (STPs) including aerated lagoon (AL), extended aeration (EA), sequential batch reactor (SBR) and conventional activated sludge system (CAS) were analysed using secondary data set. The one-year data (2019) was prepared by Majaari Services Sdn Bhd (MSSB) including effluent data, electrical bill data and plant expenses. All the data set were analysed using statistical data analysis such as principle component analysis (PCA), discriminant analysis (DA) and analysis of variance (ANOVA). PCA used to identify the efficiency of the systems in the characteristics of BOD, COD, TSS in the effluent followed by DA to study the appropriate design, flaws and workflow process of the system and lastly ANOVA to determine the appropriate design, workflow process of the system to handle Kota Bharu’s wastewater treatment. PCA resulted seven parameters which given high contributed to the STP efficiency. DA showed p- value (<0.05) for BOD, TSS and Ammoniacal Nitrogen and good in differentiate between STP types. ANOVA successfully presented AL was in a good performance followed by CAS, SBR and EL. Therefore, the efficiency of the sewage treatment systems should be identified necessary as it can be used as a guide for MSSB and others responsible teams to make a revolution in the management of domestic sewage in Kelantan in the future.