投加生物填料强化低温条件下局部改造后AB工艺研究

Study on the added biological filter in the local application of AB process at low temperature

针对齐齐哈尔AB污水处理工艺A段生化吸附高效性、对氮磷等典型污染物去除效果低等特点,在不扩建新的构筑物条件下,充分利用原始AB工艺A段特性,通过将B段局部改造为A/O工艺,能够达到强化氮磷污染物的去除效果。由于冬季水温较低,改造后的工艺不能保证稳定的出水水质,故通过投加悬浮生物填料进行生物强化。试验表明,在低温情况下,通过将B段改为A/O工艺,局部投加悬浮生物填料,能够使各项污水排放指标实现达标排放。

In view of the characteristic of highly biochemistry adsorption of A-step of Qiqihaer AB treatment process,and the low efficiency remove nitrogen and phosphorus typical pollutant,now connect with the water quality and qiqihaer high and cold climate,in the condition of don't build the new construction,made full use of the characteristic of A-step in AB process,through to local application with B-step into A/O process,can enhanced the effect of nitrogen and phosphorous typical pollutant removal.But at the low temperature,this process can't guarant a stable water quality,therefore,through added the biological filter to enhanced biological process.The test showed that through changed B-step to A/O process,at low temperature,local added biological filter,all of the pollution made the discharged water fitted the standard of wastewater.