不同有机负荷和含盐量下丝状菌颗粒污泥的特性  

Characteristics of Filamentous Aerobic Granular Sludge under Different Organic Loading Rates and Salinities

作　　者：李志华[1,2] 张勇[1,2] 王晓昌[1,2] 

机构地区：[1]西安建筑科技大学环境与市政工程学院,陕西西安710055 [2]西安建筑科技大学西北水资源与环境生态教育部重点实验室,陕西西安710055

出　　处：《中国给水排水》2008年第21期9-12,共4页China Water & Wastewater

基　　金：国家自然科学基金资助项目(50708089);国家高技术研究发展计划(863)项目(2006AA06Z328)

摘　　要：研究了序批式反应器(SBR)中好氧颗粒污泥在不同有机负荷[1.6kgCOD/(m3.d)和8.0kgCOD/(m3.d)]和不同含盐量(2.5%和5%)条件下的颗粒化过程及除污效果。研究发现,较高的含盐量(5%)可以促使颗粒污泥在形态和孔隙率方面由发散的生长模式转变为密实的生长模式。试验进行了45d后丝状菌开始占据优势,R2[负荷为8.0kgCOD/(m3·d),含盐量为2.5%]对TOC和氨氮的去除率分别由95.6%、99.5%下降到95.3%、99.1%;R4[负荷为8.0kg-COD/(m3·d),含盐量为5%]对TOC和氨氮的去除率分别由97.2%、99.0%下降到94.5%、98.1%;高含盐量下的丝状菌颗粒去除污染物的效果优于低含盐量的。The granulation and pollutants removal efficiency of aerobic granular sludge at the organic loading rates of 1.6 kgCOD/（ m^3 · d） and 8.0 kgCOD/（ m^3 · d） and at the salinities of 2.5% and 5% were investigated in sequencing batch reactors （SBRs）. It is found that a higher salinity can force the granules to grow in a compact pattern rather than an emanative one in terms of morphology and porosity. The removal rates of TOC and ammonia decrease from 95.6% and 99.5% to 95.3% and 99.1% in It2 with the loading rate of 8.0 kgCOD/（m^3 · d） and the salinity of 2.5%, and from 97.2% and 99.0% to 94.5% and 98.1% in R4 with the loading rate of 8.0 kgCOD/（m^3 · d） and the salinity of 5% respectively when filamentous bacteria predominate after the experiment of 45 days. However, the filamentous granules are more efficient for removal of pollutants at high salinity than at low one.

关 键 词：好氧颗粒污泥 含盐量 丝状菌 

分 类 号：X703.1[环境科学与工程—环境工程]