4-7浙江工业大学龚凌霄-毕业论文正文.docVIP

PAGE  河道底泥制成陶粒填料处理微污染原水 浙江工业大学 市政工程系 给水排水工程2010届 龚灵潇 指导教师： 李军 韦甦 摘要：以河道底泥制成陶粒为填料，采用序批式生物膜法对真实河道微污染原水进行处理。试验结果表明，系统启动速度快，1周后CODMn和NH3-N的去除率达32.1%和91.3%；运行稳定后，在进水CODMn为3.28-5.68mg/L，NH3-N为0.85-6.20mg/L时，出水CODMn为2.40-4.00mg/L，NH3-N为0.11-0.80mg/L，均达到《地表水环境质量标准（GB3838-2002）》中所规定的Ⅱ类水质。SBBR工艺单室交替进水、曝气的运行方式，陶粒的过滤、截留作用，有利于曝气量和浊度的降低。表面相对粗糙、比表面积大、成本低的这种陶粒填料被证明处理微污染原水具有可行性。 关键词：微污染原水；陶粒；SBBR； 氨氮；生物处理 The ceramsite filling made from river sediment used to treat the micro-polluted raw water Abstract Sequencing batch biofilm reactor packed with ceramsite which be made from river sediment is used to treat real micro-polluted river water. Test results indicate that system start rapidly, permanganate index and ammonia nitrogen removal rate of 32.1% and 91.3% a week later; after operating steady, the influent permanganate index of 3.28-5.68mg/L, ammonia nitrogen of 0.85 to 6.20mg/L, the effluent permanganate index of 2.40 to 4.00mg/L, ammonia nitrogen of 0.11 to 0.80mg/L, both of them reach the quality of standard class Ⅱ of surface water environmental quality standard (GB3838-2002). Owning to the operation mode which enter water and aerate alternately and fill with ceramsite to enhance the function of filtration and interception, aeration volume and turbidity are both reduced. This ceramsite with characteristics of relatively rough surface, large specific surface area and low cost is feasible to treat micro-polluted raw water. Keywords micro-polluted raw water; ceramsite; SBBR; ammonia nitrogen. biological treatment  目 录  TOC \o 1-3 \h \z \u  HYPERLINK \l _Toc264716322 1绪论  PAGEREF _Toc264716322 \h 1  HYPERLINK \l _Toc264716323 1.1微污染原水的定义  PAGEREF _Toc264716323 \h 1  HYPERLINK \l _Toc264716324 1.2我国水体污染的现状  PAGEREF _Toc264716324 \h 1  HYPERLINK \l _Toc264716325 1.3我国水体污染的来源  PAGEREF _Toc264716325 \h 1  HYPERLINK \l _Toc264716326 1.3.1氨氮污染的来源  PAGEREF _Toc264716326 \h 2  HYPERLINK \l _Toc264716327 1.3.2有机物污染的来源  PAGEREF _Toc264716327 \h