R E F E R E N C E S 1. Metcalf & Eddy Inc., Wastewater Engineering Treatment, Disposal & Reuse, 3 r d edition, McGraw-Hill, INC., INTERNATIONAL EDITION, 1991. 2. Seneviratne, W.M.G., Cost effective wastewater treatment system based on high rate anaerobic septic tank digester coupled with aerobic mechanism for the treatment of rubber & allied industrial effluents, Rubber Research Institute of Sri Lanka, 1997. 3. Seneviratne, W.M.G., Susantha Siriwardene, Cost effective treatment method for factory effluent discharge from rubber factories in Sri Lanka, Rubber Research Institute of Sri Lanka, Paper presented at the annual sessions of the Sri Lanka for Advancement of Science, 1992. 4. Seneviratne, W.M.G., Siriwardene T.A.S. & Somasiri H.P.P.S., Cost effective rubber effluent treatment method, publication of Rubber Research Institute of Sri Lanka, 1980. 5. American Water Works Association, Standard Methods for the Examination of Water & Wastewater, 18 t h edition, 1995. 6. Suki, A., A. Idris, Anaerobic Bioreactor Design Principles, Universiti Pertanian Malaya, 1986. 7. H. J. Rehm & G. Reed, Biotechnology volume 8, VCH Veiiagagesellschaift, Weinhein, 1986. 8. Industrial Pollution Guidelines: book no. 1 Natural Rubber Industry, Central Environmental Authority publication, 1992/93. 9. Industrial Pollution Guidelines: book mo. 1 Concentrated Latex Industry, Central Environmental Authority publication, 1992/93. 10. Tillekeratne, L.M.K., Stretching gloves production in Sri Lanka, The Sunday Times Business page, Sunday, September 3, 2001. 11. Olaboduwa, R. Sri Lankan Rubber Industry, The Daily Dinamina Thaksalawa magazine, Monday, September 16, 2001. 12. Wijesekara, R., Design cfEffluent Treatment Plant for a Soap Industry, Project report, Industrial Technology Institute, Unpublished data, 2003. 13. Web site htto://www.lgm.gov.my/consultancy/h-serl.html 14. Web site http://www.origm.island.lk/2001/ll/18/busmell.html