| 摘要 |
<p>A system for the treatment of palm oil mill effluent which utilizes different organisms for bioremediation at different stages of the treatment process. The method allows the oil palm mill by-product to enter a complete food chain, with production of high-value fish protein as an end product. The crude oil, obtained from the pressing of the sterilized fresh fruit bunches, is separated into oil and sludge followed by the separation of the sludge into sludge solid and sludge liquor. The sludge solid is first treated by digestion in animals to form animal excreta. The excreta is then converted to microorganic biomass in an aerated pond or fed to fishes directly. The biomass is then converted to high-value protein product by feeding the biomass to fishes in one or more fish ponds. The sludge liquor is first converted to microorganic biomass by microorganic digestion, preferably in a bioreactor. The biomass is then converted high-value fish product by feeding the effluent of the bioreactor to fishes in the fish pond. The effluent from the fish pond may be further treated to meet effluent requirements before being discharged into the environment.</p> |
