八钢焦化废水处理A/O/O工艺中生物选择器的改进

Improvement of Biological Selector in A/O/O Process of Coking Wastewater Treatment in Bagang

八钢焦化废水A/O/O工艺前端的生物选择器在设计时没有搅拌器,蒸氨废水、内回流硝态液、外回流污泥和投加的磷酸盐在生物选择器中不能充分均合,造成流入反硝化反应池中的污泥和废水及含磷都不平衡,A池和沉淀池有大量的绿藻,影响水质。

The biological selector at the front end of a/O/O process of coking waste water of Bagang iron and Steel Group Co.,Ltd.was designed without agitator,ammonia wastewater,internal reflux nitrate liquid,external reflux sludge and added phosphate in the biological selector,which could not be fully integrated,resulting in the imbalance of sludge,waste water and phosphorus in the denitrification reaction tank,and a large number of green algae in tank a and sedimentation tank,affecting the water quality.