海绵铁复合填料强化SBR工艺处理城镇污水研究

以城镇污水为处理对象,通过固定化生物铁填料法对SBR工艺的强化对比试验,考察了海绵铁复合填料应用于污水处理脱氮除磷的优越性。结果表明,装填有海绵铁复合载体填料的微生物固定化体系对污水的处理效果好于普通的SBR反应器:COD和氨氮的平均去除率提高了4%~6%;出水TN浓度值降低了10~20mg/L,且系统稳定效果更好;除磷效率高达92.7%,相比提高了70%以上。同时还设计了海绵铁投加量单因素影响试验对该工艺进行了优化,结果表明:当海绵铁的投加量为120 g/L时,此生物固定化体系对城镇污水的处理效果最佳。

Study on Municipal Wastewater Treatment Strengthened by Sponge Iron Composite Filler in SBR

This paper takes municipal wastewater as an object to study the advantage of sponge iron composite filler in denitrification and phosphorous removal of biological immobilized system in SBR reactor via strengthened comparison test. The test results operations showed that the treatment efficiency in the microbial immobilization system filled with sponge iron composite filler was better than that in ordinary SBR reactor. The average removal rate of COD and NH3 - N improved by 4% - 6%. The total nitrogen in the treated effluent was reduced by 10 -20 mg/L while the system was in stable condition. The phosphorous removal performance was enhanced by 70% in contrast and the removal efficiency was achieved to 92.7%. Besides, designing a Fe0 dose as single factor experiment to optimize the process, and the results showed that the treatment efficiency of municipal wastewater performed the best when the FeO dose was 120 g/L.