1. Handbook of Water and Wastewater Treatment Technology;Cheremisinoff,1995
2. Performance of a rotating biological contactor under varying wastewater flow;Clark;J. Water Pollut. Control Fed.,1978
3. Standards of industrial effluents quality due to Ministry of Industry's, regulations, Department of industrial works;Department of Industrial Works,1992
4. Wastewater Engineering Treatment and Reuse;Metcaft,2004
5. Effect of bio-sludge concentration on the efficiency of sequencing batch reactor (SBR) system to treat wastewater containing Pb2+ and Ni2+;Sirianuntapiboon;J. Hazard. Mater.,2009