【作者】 刘丹；

【导师】 黄国和； 黄跃飞；

【作者基本信息】 华北电力大学 ， 水处理， 2012， 硕士

【摘要】 目前,水资源紧缺、水污染严重成为制约我国经济和社会发展的重要因素。与此同时,城市污水因其水质稳定,水量稳定,成为再生水的可靠水源备受广泛关注,加之再生水的处理技术和工艺都较为成熟。然而,城市污水经深度消毒处理后的再生水因其水质的差异对回用系统会产生或多或少的影响。因此,本文针对城市生活污水经过MBR+弱酸氧离子交换后的再生水,经四种不同的消毒剂(二氧化氯、次氯酸钠、异噻唑啉酮和季铵盐)消毒后回用问题,分别分析不同消毒剂消毒后,水质的变化以及水质对回用系统腐蚀的影响。详细来说,在第2章,介绍了试验所选用的消毒剂,并研究了不同消毒剂消毒后水中微生物的变化情况,结果表明次氯酸的最佳投药量为16mg/l,二氧化氯的最佳投药量为16mg/l,异噻唑啉酮的最佳投药量为120mg/l,季铵盐的最佳投药量为180mg/1;在第3章,通过静态实验研究了不同消毒剂对A3碳钢和316L不锈钢的Ⅰ型标准试片的腐蚀情况以及对水质的改变,找出四种消毒剂主要是通过增加再生水中个别离子对腐蚀起促进作用；在第4章,通过动态实验研究了四种不同消毒剂消毒后的再生水对循环系统的影响,结果表明使用次氯酸钠、二氧化氯及季铵盐消毒时,再生水对冷却水系统的腐蚀速度不断增大,而使用异噻唑啉酮作为消毒剂时,腐蚀速度比较稳定。更多还原

【Abstract】 Currently, the water shortage, water pollution as a constraint to economic and social development in China an important factor. At the same time, urban sewage water because of its stability, water stability, a reliable source of reclaimed water much attention, combined with the recycled water treatment technologies and processes are more mature. However, the disinfection of municipal wastewater treatment by the depth of its water quality of reclaimed water reuse system differences will have more or less affected. Therefore, this paper through the municipal sewage MBR+weak acid ion-exchange of oxygen after the recycled water by four different disinfectants (chlorine dioxide, sodium hypochlorite, isothiazolin-ketone, and quaternary ammonium salt) with a back problem after disinfection, sterilization, respectively, analysis of different agent after disinfection, water quality and water quality changes in corrosion of the impact of reuse system. Detail, in Chapter3, The effects of different disinfectants and microorganisms in water after anion changes; in Chapter4, through static experimental study of different disinfectants on A3carbon steel and316L stainless steel I-standard test piece corrosion, the results show that the optimal dosage of sodium hypochlorite for the16mg/l, chlorine dioxide is the best dosage of16mg/l, isothiazolin-ketone of the optimal dosage micro-120mg/l, ammonium salt of the most good dosage of180mg/l; in Chapter5, experimental studies through four different dynamic disinfectant after disinfection of reclaimed water to the circulatory system, the results showed that sodium hypochlorite disinfection and chlorine dioxide disinfection of water will be back corrosion rate with a relatively large system, the flow between the two different corrosion rates are higher than the quaternary ammonium thiazolidinone and reuse water after disinfection, resulting in both a disinfectant water back after the corrosion rate is mainly due to relatively large the role of NH4+, which is different from the conventional experiments the greatest impact on the corrosion rate is C1-this view.更多还原