摘要
研究了T型氧化沟工艺对猪场粪水厌氧出水处理。当HRT平均为18 h,反硝化、硝化运行时间比tDN/tN为0.40时,处理出水的COD、BOD_5、NH_4^+—N和SS均能达到《畜禽养殖业污染物排放标准》。在tDN/tN为0.17、0.27、0.40、0.47、0.56时,分别比较T型氧化沟对脱氮效果的影响。结果表明,当tDN/tN为0.40时,T型氧化沟对高氨氮的猪场粪水有较好的脱氮效果,此时系统达到硝化能力和反硝化潜能的最佳组合。但在试验中T型氧化沟对磷的去除效果不高。
Triple oxidation ditch was used to treat anaerobically digested effluent of piggery wastewater. COD, BOD_5, NH_4^+—N and SS of the treated water could meet the discharge standard of pollutants for livestock and poultry breeding under the conditions of HRT=18 h, tDN/tN =0. 40. When tDN/tN =0. 17,0. 27, 0. 40, 0. 47, 0. 56, respectively, treatment efficiency was analyzed in nitrogen removal with Triple Oxidation Ditch. Result showed that the system had good result for nitrogen removal to the high concentration of NH_4^+—N in piggery wastewater, hence the system could meet the best ratio between penitrification potential and nitrification capability. But treatment efficiency of phosphorus removal was not high with Triple Oxidation Ditch in the experiment.
出处
《东华大学学报（自然科学版）》
CAS
CSCD
北大核心
2004年第4期76-79,共4页
Journal of Donghua University(Natural Science)
关键词
T型氧化沟
猪场粪水
tDN/tN(反硝化、硝化运行时间比)
triple oxidation ditch, piggery wastewater, t_(DN)/t_N (time ratio of denitrification phase and nitrification phase)
