【作者】 周建忠；

【导师】 张勤；

【作者基本信息】 重庆大学 ， 市政工程， 2005， 硕士

【摘要】 针对已研制出的结构简单、造价低廉、操作方便、最高处理能力为50m3/d 的集成化净水装置,本文主要研究该净水装置利用“常规处理”工艺对较高浊度水源水的处理效果和利用“生物接触氧化预处理+常规处理”工艺对微污染水源水的处理效果,以及生物接触氧化预处理对后续常规处理工艺的影响。通过试验研究该净水装置对各种水源水的适应性,提出对净水装置的改进意见。根据试验研究可知,对于较高浊度的长江水源水,本集成化净水装置对原水浊度、CODMn、NH3-N、NO2―-N 和NO3―-N 等均有较好的去除效果。在设计流量40m3/d 的条件下,出水浊度平均0.25NTU,其总去除率为99.60~99.94%;出水CODMn 平均含量1.98mg/L,其总去除率为41.86~56.27%;出水NH3-N 平均含量0.34mg/L,其总去除率为52.94~63.54%;出水NO2―-N 平均含量0.007mg/L,其总去除率为66.67~81.82%;出水NO3―-N 平均含量2.78mg/L,其总去除率为13.89~21.43%。而对于微污染水源水,本集成化净水装置对原水浊度、CODMn、NH3-N、NO2―-N 和色度等也有较好的去除效果。在流量10m3/d 和气水比值0.7 的条件下,出水浊度平均0.67NTU,其总去除率为94.94~97.41%;出水CODMn平均含量3.14mg/L,其总去除率为68.01~71.93%;出水NH3-N 平均含量0.19mg/L,其总去除率为84.17~88.64%;出水NO2―-N 平均含量0.005mg/L,其总去除率为80.65~84.00%;出水NO3―-N 平均含量2.80mg/L,其总去除率为-12.50~-3.70%;出水色度平均7度,其总去除率为91.67~95.83%。试验中发现,对不同的水源水,该净水装置各个处理单元对于原水的处理起不同的去除作用。对较高浊度水源水,混凝沉淀阶段在去除原水浊度、CODMn、NH3-N 和NO3―-N 等方面起主要作用;而对微污染水源水,混凝沉淀阶段在去除原水浊度、CODMn、NO3―-N 和色度等方面起主要作用,过滤阶段却在去除原水NH3-N和NO2―-N 方面起主要作用。本文对该净水装置运行费用及其应用前景也作了简要分析。结果表明,该净水装置处理较高浊度水源水时,在设计流量40m3/d 条件下,其单位运行费用为0.834 元/m3。当该净水装置处理规模由10m3/d 增大到50m3/d 时,其单位运行费用由2.575 元/m3减小到0.717 元/m3。更多还原

【Abstract】 An integrative apparatus for water purification has been developed, which has the characteristics of simple structure, low manufacture cost, simply and conveniently to be operated, and the maximum treatment capacity 50m3/d. In this thesis, firstly, the treatment effects of higher turbidity source water by conventional treatment technology were investigated. In addition, the treatment effects of micro-polluted source water by Bio-contact oxidation pretreatment-conventional treatment technology with the apparatus for water purification, and the impact of Bio-contact oxidation pretreatment on following conventional treatment technology were studied. Finally, improvement advices on the apparatus for water purification were brought forward through experimental study on the applicability of it to treat the different source water. Experimental study showed that the integrative apparatus for water purification had better efficiency in removing turbidity, CODMn, NH3-N, NO2―-N and NO3―-N of raw water to the higher turbidity source water of the Yangtze River. In the condition of the design flow 40m3/d, the average turbidity of effluent was 0.25NTU and its overall removal efficiency was 99.60~99.94%. The average concentration of CODMn , NH3-N, NO2―-N, NO3―-N in effluent was 1.98mg/L, 0.34mg/L, 0.007mg/L and 2.78mg/L respectively. The overall removal efficiency was 41.86~56.27%, 52.94~63.54%, 66.67~81.82% and 13.89~21.43% respectively. The integrative apparatus for water purification also had better efficiency in removing turbidity, CODMn, NH3-N, NO2―-N and chroma of raw water to the micro-polluted source water. In the condition of the flow 10m3/d and Air-Water Ratio 0.7, the average turbidity of effluent was 0.67NTU and its overall removal efficiency was 94.94~97.41%. The average concentration of CODMn , NH3-N , NO2―-N, NO3―-N and chroma in effluent was 3.14mg/L, 0.19mg/L, 0.005mg/L, 2.80mg/L and 7 degrees respectively. The overall removal efficiency was 68.01~71.93%, 84.17~88.64%, 80.65~84.00%, -12.50~-3.70% and 91.67~95.83% respectively. During the experiment, it was found that every processing unit of the apparatus for water purification had different removal function in the treatment of raw water to the different source water. The coagulation and sedimentation could remove most of turbidity, CODMn, NH3-N and NO3―-N of raw water to the higher turbidity source water. Also, the coagulation and sedimentation could remove most of turbidity, CODMn, NO3―-N and chroma of raw water, and the filtration could remove most of NH3-N and NO2―-N of raw water to the micro-polluted source water. The operation cost of the apparatus for water purification and its applicative foreground were also briefly analyzed in this thesis. The result showed that the unit operation cost of the apparatus for water purification was 0.834RMB/m3 in the condition of the design flow 40m3/d, when it treated the higher turbidity source water. The unit operation cost of the apparatus for water purification decreased from 2.575RMB/m3 to 0.717RMB/m3, when its scale of treatment increased from 10m3/d to 50m3/d.更多还原