序批式生物膜法同步除磷脱氮特性研究

对淹没序批式生物膜法去除有机物和磷及同步部分脱氮的特性进行了研究。其适合的载体装填密度为30％，水力停留时间为9h，其中厌氧3h，好氧6h，进水COD负荷从0．27kg/(m^3.d)到1．32kg/(m^3.d)均可使除磷率达90％以上，脱氮率达50％－60％。淹没式生物膜法除磷脱氮工艺中的优势菌属为假单胞菌属，其次依顺序为气单胞菌属，芽孢杆菌属，微球菌属，硝化矸菌属，生物膜具有生物量大（MLVSS达5531．7mg/L)，脱落污泥含磷量高（达5．67％），沉降性好（SVI为101．7）的特点，污泥产率为0．1996kg干泥／kgCOD。

Characteristics Study on the Simultaneous Phosphorus and Partial Nitrogen Removal in Sequencing Batch Reactor of Submerged Biofilm Process

The Submerged Biofilm SBR system has been developed in the study for removing organic and phosphorus simultaneously with partial nitrogen removal by such operating procedure: The suitable applied carriers package percentage was 30% , and the hydraulic retention time was 9 hours which included 3 hours in anaerobic reaction section and 6 hours in aerobic reaction section.When the influent COD loading rate increased from 0.27 kg/(m 3.d ) to 1.32kg/(m 3.d),the phosphorus removal efficiency reached over 90%, and the nitrogen removal 50-60%. it is certain that the dominant phosphorus removal bacterial species is Pseudomonas and then Aeromonas, Bacillus, Micrococcus, Nitrobacter in the submerged biofilm process.The sludge had high phosphorus content of 5.67% , high biomass with MLVSS of 5531.7mg/L and good settling characteristics with SVI of 101.7 and 0.1996kgDS/kgCOD of sludge production