2级潜流湿地-塘组合系统校园污水除氮实验  

EXPERIMENT RESEARCH ON NITROGEN REMOVAL BY TWO-STAGE SUBSURFACE FLOW CONSTRUCTED WETLAND- ECOLOGICAL POND COMBINED SYSTEM

作　　者：宋嘉骏[1] 王全金[1] 朱平[1] 戚小波[1] 朱沛[1] 

机构地区：[1]华东交通大学土木建筑学院,江西南昌330013

出　　处：《水处理技术》2014年第7期85-88,共4页Technology of Water Treatment

基　　金：国家自然科学基金项目(51169006);江西省自然科学基金项目(2010GZC0021)

摘　　要：利用潜流人工湿地-塘组合系统装置在不同水力负荷下连续运行处理校园污水,对各项污染物指标进行监测对比。结果表明,COD、TN和NH4+-N的去除率随着水力负荷的升高(200 mm/d低水力负荷、500 mm/d中水力负荷、1 000 mm/d高水力负荷)而依次下降且维持在较高水平;各水力负荷下COD出水变化率均小于进水,低、中水力负荷下TN和中、高水力负荷下NH4+-N出水变化率小于进水;且各构筑物出水中NO3--N和NO2--N含量变化较大,并呈现出不同趋势的变化。表明在不同水力负荷下,组合系统对污染物去除效果较好;中水力负荷下抗冲击负荷能力强。在潜流人工湿地-塘组合系统中硝化-反硝化作用是氮元素去除的主要途径,并在不同负荷冲击下改变途径构成来起到稳定水质的调节作用。The artificial wetland constructed wetland pond system device was used for continuous treatment of campus sewage under different hydraulic loading. The results show that the removal rate of COD, TN and NH4^＋-N decreased with the increasing of hydraulic load （200 mrrdd with low hydraulic loading, 500 mm/d with mid-hydranlic loading, 1 000 mm/d with high hydraulic loading） and it all maintained at a high level. The change rate of COD with effluent was less than that with inlet in all hydraulic loading, the change rate with effluent was less than that with inlet of TN in low and mid- hydraulic loading and NH4^＋-N in mid and high hydraulic loading; and NO3^--N and NO2^--N concentration in each the structures changes a lot, with showed a different trend of change. This shows that in the different hydraulic loading, the pollutant removal effect is good, the combination system has powerful shock load capability in mid-hydraulic loading. Nitrifieation-denitrification is the main way for nitrogen removing in the constructed wetland-pond combination system, and it change approach to play a regulatory role in the stability of water quality in different load shock.

关 键 词：潜流人工湿地 生态塘 校园污水 除氮 

分 类 号：X703.1[环境科学与工程—环境工程]