SBBR处理猪场厌氧消化液脱氮除磷实验研究

Experiments Study on Treatment of SBBR for Piggery Anaerobic Digestion Fluid Biological Nitrogen and Carbon Removal

猪场废水是富含氮和磷的高浓度有机废水,其厌氧消化液C/N比低,可生化性差,本实验采用序批式生物膜反应器(SBBR)处理猪场废水厌氧消化液,结果表明:SBBR直接处理猪场废水厌氧消化液,COD和NH4+-N去除不稳定且效果较差,但通过添加30%猪场原水能有效提高SBBR对厌氧消化液污染物的降解能力,COD去除率可提高到83.7%～87.95%,氨氮去除率提高到96.1%～98.9%,TP去除效果要比未添加的好,去除率增大到81.21%～82.97%。

The piggery is producing a considerable amount of wastewater with high nitrogen（ammonia and organic nitrogen） and organic matter as well as phosphorus（P）,its anaerobic digesting fluid C/N is low and biochemistry degradation difference.This experiment used sequencing batch biofilm reactor（SBBR） to treat the pig farm wastewater anaerobic digesting fluid,finally research indicated：SBBR treated pig farm wastewater anaerobic digesting fluid directly,COD and NH 4＋-N removal was unstable and poor,but through adding 30% pig farm raw wastewater to the anaerobic digesting fluid could be able to enhance SBBR pollutant degeneration ability effectively,COD removal rate enhanced to 83.7%～87.95%,NH 4＋-N removal rate rised to 96.1%～98.9%,and the TP removal rate also increased to 81.21%～82.97%.