组合填料生物滤床处理污水脱碳氮磷性能试验  

Experimental Study on Characteristics of Biological Filter with Combination Packing for Removal C,N and P from Sewage

作　　者：赵玉华[1] 赵杰[1] 李艳凤[1] 徐丽[1] 

机构地区：[1]沈阳建筑大学市政与环境工程学院,辽宁沈阳110168

出　　处：《沈阳建筑大学学报（自然科学版）》2011年第5期957-961,共5页Journal of Shenyang Jianzhu University：Natural Science

基　　金：国家重大水专项项目(2008ZX07208-002-05)

摘　　要：目的深度处理模拟城市污水厂二级出水,考察对磷、有机物及氨氮的去除效果.方法选取沸石、钢渣、煤灰渣、硅藻土4种填料,采用不同的组合方式构建4个填料生物滤池,在试验滤速0.65 m/d的条件下,利用组合填料生物滤床的物理、化学和生物的协同作用,通过填料层过滤、吸附、共沉、离子交换和微生物的分解.结果装有钢渣填料的滤柱除磷效果较好.沸石、钢渣、硅藻土组合方式填料滤柱对磷、碳、氨氮的去除效果均较高,磷的平均去除率93.68%,氨氮平均去除率86.1%,CODCr平均去除率62.7%.而沸石与煤渣组合滤柱、或沸石、煤渣、硅藻土组合滤柱除磷效果较差.结论下向流组合填料滤床处理模拟城市污水厂二级出水最佳填料组合方案:从上至下,沸石、钢渣、硅藻土.Municipal secondary effluent was treated deeply ,to investigate removal efficiency to phosphorus, organic pollutants and ammonia nitrogen. Four packing bio-filters was built by selecting zeolite, steel slag, coal ash and diatomite, using different packing combination way. In the test we set the biological filter by fil- tration, adsorption, precipitation, ion exchange and microbial decomposition. With physical, chemical, biolog- ical synergy of biological filter with combination packing, the test filtering velocity was 0. 65 meters per hour. Effect of phosphorus removal was high by filters packed steel slag. Average phosphorus removal rate was 93.68 percent, ammonia nitrogen 86. 1 percent and 62.7 percent, so all the rates was high velocity ,0. 65 meters per hour. But filters packed zeolite, coal cinder or zeolite, coal cinder and diatomite have a poor re- moval effect for phosphorus. The best combination scheme for packing bed in the down-flow bio-filter is ze- olite, steel slag and diatomite from top to bottom to treat municipal secondary effluent.

关 键 词：生物滤床 组合填料 污水深度处理 脱碳氮磷 

分 类 号：X703[环境科学与工程—环境工程]