【摘要】 难降解有机物含量高且碳氮比失调是造成养猪场稳定塘废水难于处理的主要原因。本文采用基于固定化微生物技术的厌氧折流板(IABR)与曝气生物滤池(IBAF)组合工艺处理稳定塘废水,对比了IABR-IABF组合工艺与单一IBAF工艺的处理效果,研究了碱度和碳源对硝化反硝化过程的影响。组合工艺平均进水COD1532.6mg/L,平均出水为332.7mg/L,去除率为78%,NH3-N平均进水538.6mg/L,平均出水为12.3mg/L,去除率97.7%。以新鲜废水做反硝化阶段的碳源时TN去除率93%,可有效解决脱氮过程中的碳源成本问题。更多还原

【Abstract】 The swine lagoon wastewater is difficult to treat due to its high content of organic compounds of difficult-to-degradation and the improper proportion of C/N. Integrated treatment that based on immobilized microorganisms was adopted in this experiment which included Anaerobic Baffled Reactor and Biological Aerobic Filter Bed. The treatment efficiency between single aerobic treatment and combined anaerobic-aerobic treatment was compared, and the influence of alkalinity and carbon on the nitrification and denitrification process was studied. COD value is dropping from about 1532.6mg/L to 332.7mg/L with the COD removal efficiency of 78.3% after the combined anaerobic and aerobic treatment, while NH₃-N value is dropping from about 538.6mg/L to 12.3mg/L with the NH₃-N removal efficiency of 97.7%. The TN removal efficiency is 93% when fresh rinse wastewater was used as carbon resource in （denitrification,） which could reduce the operation cost. This experiment provides a new way to solve nitrogen removal problem of the swine wastewater.更多还原