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A Study of Performance of Wastewater Treatment Systems for Small Sites

Authors: Fu E. Tang, Vun J. Ngu


The pollutant removal efficiency of the Intermittently Decanted Extended Aeration (IDEA) wastewater treatment system at Curtin University Sarawak Campus, and conventional activated sludge wastewater treatment system at a local resort, Resort A, is monitored. The influent and effluent characteristics are tested during wet and dry weather conditions, and peak and off peak periods. For the wastewater treatment systems at Curtin Sarawak and Resort A, during dry weather and peak season, it was found that the BOD5 concentration in the influent is 121.7mg/L and 80.0mg/L respectively, and in the effluent, 18.7mg/L and and 18.0mg/L respectively. Analysis of the performance of the IDEA treatment system showed that the operational costs can be minimized by 3%, by decreasing the number of operating cycles. As for the treatment system in Resort A, by utilizing a smaller capacity air blower, a saving of 12% could be made in the operational costs.

Keywords: Conventional Activated Sludge, IDEA, Performance Monitoring, Wastewater Treatment

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[1] WHO. 2004. World facing "silent emergency" as billions struggle without clean water or basic sanitation, say WHO and UNICEF. (accessed July 12, 2010)
[2] Embassy of Denmark, Kuala Lumpur, 2006. ÔÇÿMalaysian water sector- Retrieved March 25, 2008, from 4096-9E47-D5D64EF1F182/0/MalaysianWaterSector.pdf.
[3] Sapari, N., A. Idris, and N. H. A. Hamid. "Total removal of heavy metal from mixed plating rinse wastewater" Desalination ,voll. 106 (1-3): pp. 419-422, 1996
[4] United States Environmental Protection Agency 2002, Onsite wastewater treatment systems manual chapter 3: Establishing treatment system performance requirements. Retrieved May 12, 2008, from
[5] Hii, L. C. 2008. Characterization of wastewater and stormwater for small sites. BEng, Curtin University Sarawak Campus
[6] Crites, R & Tchobanoglous, G. 1998, Small and decentralized wastewater management
[7] Iqbal, J., and C. Guria. "Optimization of an operating domestic wastewater treatment plant using elitist non-dominated sorting genetic algorithm". Chemical Engineering Research and Design 87 (11): 1481- 1496, 2009. 4WFGRY7-1/2/41c32af64bb5819897f693ee554e63cf (accessed September 29, 2010)
[8] Fujimoto, E., T. Sekine, K. Iwahori, and N. Furuya. "Studies on dissolved oxygen concentration and sludge retention time affecting the full-scale activated sludge process". Water Research 17 (12): 1829- 1845. 1983. 48BDR5D-P4/2/3454f507a75248edaa26c7accab7db84 (accessed October 01, 2010)
[9] Rani, D., and R. P. Dahiya "COD and BOD removal from domestic wastewater generated in decentralised sectors". Bioresource Technology, vol. 99, No. 2: 344-349, 2008
[10] Eddy, M. 2004. Wastewater Engineering: Treatment and Reuse. 4th ed. NY, USA: McGraw - Hill
[11] Tan, A. H. 2006. A study into a viable wastewater treatment system for a commercial site in Sarawak. BEng, Curtin University Sarawak Campus
[12] Weida Environmental Technology Sdn.Bhd. n.d., Operation and Maintenance Manual:Intermittently Decanted Extended Aeration (IDEA) Activated Sludge.
[13] Bonie A.A. personal communication, April 7, 2010. Campus Services Department, Curtin University Sarawak campus, CDT 250, 98009, Miri, Sarawak, Malaysia.
[14] Commodity Supplier Sdn. Bhd. n.d., Proposed FRP "HI-KLEEN" Sewage Treatment System MH500F and MH450F Design Calculation.
[15] Larsen, Ib & Lynghus, H 2004, Framework Plan for Integrated Wastewater Management for the City of Kuching, Sarawak, Sarawak Government and DANIDA, Kuching.
[16] Teo, R., personal communication, 25 May 2010, Kiara Bumimas Sdn. Bhd., No.1, Brooke Road, 98000 Miri, Sarawak, Malaysia.
[17] de Melo, J. J., and A. S. Câmara. "Models for the optimization of regional wastewater treatment systems". European Journal of Operational Research, vol. 73, no. 1, pp. 1-16, 1994
[18] Kim Oanh, N.T. & Bengtsson, B.E. "Design of a representative and cost-effective sampling programs for industrial wastewater with examples from bleached kraft pulp and paper mills", Resources, Conservation and Recycling, vol. 18, pp. 107- 124., 1996.
[19] Friedler, E., and E. Pisanty. "Effects of design flow and treatment level on construction and operation costs of municipal wastewater treatment plants and their implications on policy making". Water Research, vol. 40, no. 20, pp. 3751-3758, 2006.
[20] Massoud, M., J. Tareen, A. Tarhini, J. Nasr, and M. Jurdi. "Effectiveness of wastewater management in rural areas of developing countries: a case of Al-Chouf Caza in Lebanon". Environmental Monitoring and Assessment, vol. 161, no. 1-4, (February 1): pp. 61-69, 2010.