摘要
为探讨季节变化对典型工程中悬浮填料强化硝化的影响,以青岛市某采用改良A2/O-MBBR工艺的污水处理厂为研究对象,采用静态烧杯试验方法和高通量测序技术,对秋冬两季活性污泥系统与悬浮填料-活性污泥复合系统的硝化反应速率变化以及硝化菌构成进行研究。结果表明:活性污泥系统的比氨氧化速率(K_A)普遍大于其比硝化速率(K_N),悬浮填料-活性污泥复合系统的K_A与K_N则大体相当;无论是活性污泥系统还是悬浮填料-活性污泥复合系统,其K_A与K_N值均随秋冬季节温度下降而下降,且K_A下降幅度均大于K_N;与活性污泥系统相比,悬浮填料-活性污泥复合系统在秋冬季节能够在相当程度上提高活性污泥系统的K_A和K_N值,尤其在冬季,对K_N的提高程度更加明显;悬浮填料对AOB和NOB均有极强的富集作用,且对NOB的富集效果更好。
In order to discuss effect of seasonal variation on the enhanced nitrification of suspended carriers in typical engineering project,static breaker test method as well as the high-throughput sequencing method was employed to study variation of nitrification rate and composition of nitrobacteria of the activated sludge system and the combined process of suspended carriers and activated sludge system（shortened form combined process） in autumn and winter,based on a sewage treatment plant which adopted a modified A2/O-MBBR process in Qingdao. The results showed that the specific ammonia oxidation rate（KA） of the activated sludge system was generally greater than that of the specific nitrification rate（KN）. However,the KA of combined process was roughly equivalent to that of KN. The KA and KN both dropped as the temperature decreased in autumn and winter either for activated sludge system or combined process. KA dropped slightly larger than KN. Compared with activated sludge system,the KA and KN were improved by combined process in autumn and winter,especially the KN in winter. Suspended carrier has significant enrichment ability for AOB and NOB,and better for NOB.
出处
《化工进展》
EI
CAS
CSCD
北大核心
2016年第11期3677-3682,共6页
Chemical Industry and Engineering Progress
基金
国家水体污染控制与治理科技重大专项(2012ZX07313-001)
