又大又紧又粉嫩18p少妇,国产精品久久久久久一区二区三区,手机在线看永久av片免费,无码人妻少妇色欲av一区二区

Haisen Pharmaceutical Co., Ltd. wastewater denitrification project

時間:2019-06-13

The concentration of NH4+-N produced by Haisen Pharmaceutical Co., Ltd. is 800-1200 mg/L, which is treated by Nine Dragon-Anqi Biological Denitrification Process. The designed treatment scale is 150 t/d, the reaction tower volume is only 10 m3, the ammonia nitrogen removal rate is as high as 95%, and the total nitrogen removal rate is above 85%.