改良分段进水工艺处理低C/N城市污水的体积优化控制  

VOLUME OPTIMIZATION CONTROL OF MODIFIED STEP FEED PROCESS IN TREATING LOW COD/TN MUNICIPAL SEWAGE

作　　者：陈强[1] 王伟[2] 汪传新[3] 彭永臻[1] 

机构地区：[1]哈尔滨工业大学城市水资源与水环境国家重点实验室,黑龙江哈尔滨150090 [2]黑龙江工程学院土木与建筑工程学院,黑龙江哈尔滨150050 [3]广州市市政工程设计研究院,广东广州510060

出　　处：《水处理技术》2015年第4期71-76,共6页Technology of Water Treatment

基　　金：国家自然科学基金资助项目(51208185);黑龙江省青年科学基金资助项目(QC2011C018);黑龙江省普通高等学校青年学术骨干支持计划项目(1251G053)

摘　　要：采用改良分段进水工艺处理低碳氮比（m（C）/m（N）〈4）生活污水。在HRT为10 h、污泥泥龄（SRT）为10-15 d,进水流量分配比为4：3：3的条件下,通过调整厌氧、缺氧与好氧的体积分配,考察系统对污染物的去除效果。结果表明,随着V（缺总）/V（好总）的增大,碳源有效利用率会逐渐提高,在V（厌）：V（缺总）：V（好总）为4：12：6时,达到最高66.2%,此时系统除磷效果最好,出水PO4^3--P、TN的质量浓度分别为0.55、22.60 mg/L。在V（厌）：V（缺总）：V（好总）为4：9：9时,脱氮效果最好,出水TN、PO4^3--P的质量浓度分别为17.76、2.61 mg/L。综合考虑去除效果以及后续可优化空间,V（厌）：V（缺总）：V（好总）=4：9：9为较优工况。By adjusting the volume distribution of anaerobic,anoxic and aerobic zone,the removal rate of pollutants using modified step feed process to treat low（m（C）/m（N）4） municipal sewage was studied under the following conditions：hydraulic retention time（HRT） was 10 h,sludge retention time（SRT） was 10-15 d,and influent flow distribution ratio was 4：3：3.The results showed that effective carbon source utilization rate would gradually improve with an increase of the total volume ratio of anoxic and oxic zones.Under the condition of volume of anaerobic zone：when total volume ratio of anaerobic zone to anoxic zone to oxic zone equaled 4：12：6,effective carbon source utilization rate reached the highest point,i.e.66.2%,and phosphorus removal rate of this system was the best,the mass concentration of PO4^3--P and TN in the effluent reaching 0.55 mg/L and 22.60 mg/L,respectively.When total volume ratio of anaerobic zone to anoxic zone to oxic zone equaled 4：9：9,nitrogen removal effect was the best,the mass concentration of TN and PO4^3--P in the effluent reaching 17.76 mg/L and 2.61 mg/L,respectively.Considering the removal and subsequent optimization space,the optimal condition was the ratio of volume of anaerobic zone to total volume of anoxic zone to total volume of oxic zone being 4：9：9.

关 键 词：分段进水 体积分配 低碳氮比 脱氮除磷 

分 类 号：X799.3[环境科学与工程—环境工程]