亚硝酸型反硝化除磷工艺特性及其应用  

The performance of DPAO using nitrite as electron acceptor and its practical application

作　　者：康婷婷[1] 王亮[2] 何洋洋[1] 孙法迁[1] 吴伟祥[1] 

机构地区：[1]浙江大学环境与资源学院,浙江杭州310058 [2]东华工程科技股份有限公司,安徽合肥230000

出　　处：《中国环境科学》2016年第6期1705-1714,共10页China Environmental Science

基　　金：国家水体污染与治理重大专项(2014ZX07101-012);浙江省重大科技专项(2012C03001)

摘　　要：以亚硝酸盐作为电子受体进行反硝化除磷污泥的驯化,并探究了工艺运行条件、性能及实际应用情况.研究表明:厌氧-缺氧-好氧驯化方式可快速富集以亚硝酸盐为电子受体的反硝化聚磷菌,通过逐步提高底物浓度可以驯化富集耐受高NO_2^--N浓度的DNPAOs.实际废水运行实验表明,反硝化除磷法处理猪场废水UASB-SFSBR尾水是可行的,当缺氧进水NO_3^--N、NO_2^--N和PO_4^(3-)-P浓度分别为5,70,30mg/L时,出水NO_3^--N和NO_2^--N浓度基本为0,PO_4^(3-)-P浓度在1.0mg/L以下.In this study, the effects of the operational parameters on the performance and practical application of the acclimated DPAO sludge using nitrite as electron acceptor were investigated. The results showed that anaerobic-anoxic-aerobic process was highly effective for the enrichment of nitrite-based DPAOs. Besides, a step increase of nitrite concentration in the feed was beneficial to improve the nitrite tolerance of DNPAOs. Practical application suggested that DPAO process was feasible for the post-treatment of UASB-SFSBR effluent during the piggery tail wastewater treatment. When the influent concentration of NO3--N、NO2--N and PO43--P were 5,70 ,30mg/L, respectively, the effluent could reach down to nearly 0of NO3--N and NO2--N, and less than 1.0mg/L of PO43--P.

关 键 词：反硝化除磷 亚硝酸盐 碳源 投加方式 实际废水 

分 类 号：X703[环境科学与工程—环境工程]