玉米秸秆去除水中硝酸盐污染的研究

Study on removal of nitrate pollution in water by using corn stalk

以玉米秸秆及改性玉米秸秆作为反硝化碳源,通过反硝化作用去除模拟水体中的硝酸盐。实验证明,在温度为35C、pH值为7.5、进水硝酸盐浓度为80mg/L,实验10d时,玉米秸秆及改性玉米秸秆去除水中的氮化物的效果最佳,其中改性玉米秸杆作为碳源,水中氮化物的去除率达到99.18%。

It mainly uses corn stalk and modified corn stover as denitrification carbon source to remove nitrate in simulated water by denitrification.The immersion test of the carbon source shows that the C,H and N elements of the two materials are rich,and the soaking liquid contains essential elements for promoting microbial growth,and the heavy metal content is low,which is suitable as a carbon source.At the same time,it was found that the nitride removal rate in water was 99.18%at a temperature of 35℃,the pH value of 7.5,and an influent nitrate concentration of 80 mg/L in 10days.The modified corn stalk is morel suitable as a carbon source for removing nitrate from water.