Research on Livestock and Poultry Breeding Wastewater Treatment Technology
Small-scale and pilot-scale experiments were carried out for livestock and poultry breeding wastewater,with optimization of the ammonia nitrogen stripping conditions.The results of the ammonia nitrogen stripping ex-periment indicate that the most ideal pH value for ammonia nitrogen stripping is 11,with a gas-to-liquid ratio of 400:1,and the optimal stripping time should be 1 hour,achieving a stripping efficiency of up to 86.81％under i-deal conditions.By carrying out pilot and medium-scale experiments on livestock and poultry breeding wastewater,the water quality indicators of influent and effluent were measured respectively.The research findings show that the small-scale pilot unit for livestock and poultry breeding wastewater can achieve a removal rate of o-ver 93％for COD,over 92％for ammonia nitrogen,and between 89％～94％for TP;the medium-scale pilot unit can achieve a removal rate of over 95％for COD,over 95％for ammonia nitrogen,and over 90％for TP.The o-verall effluent indicators meet the discharge standards,indicating that the"stripping+AO biochemical treatment+MBR membrane method+chemical phosphorus removal"process can effectively treat livestock and poultry breeding wastewater.
livestock and poultry breeding wastewaterammonia nitrogen strippingsmall-scale testpilot test
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