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以摇蚊幼虫和铜绿微囊藻胞内有机物(IOM)为研究对象,考察在不同铜绿微囊藻和摇蚊幼虫浓度、氯胺投加量、反应时间、p H值和温度等条件下消毒副产物的生成规律。结果表明,当铜绿微囊藻或摇蚊幼虫单独存在时消毒副产物生成量都很少,最大值不超过1.3μg/L;当二者共存时,氯胺消毒副产物生成量均有明显增加,但变化趋势却有所不同。随着TOC浓度的不断增大,具有稳定结构的消毒副产物,如三氯甲烷(TCM)和三氯乙酸(TCAA)的生成量逐渐增加,水合氯醛(CH)和二氯丙酮(DCP)生成量则是先增加再降低。随着氯胺投量的增加,TCM、二氯乙腈(DCAN)、CH、DCP、二氯乙酸(DCAA)和TCAA生成量都逐渐增加。CH和DCP生成量随反应时间的延长先增加后减少,在48 h时生成量最多。p H值的增大有利于增加TCM和TCAA的生成量。DCAN生成量随着温度的升高而减少,CH和DCP生成量在20℃时出现最大值,分别为1.43和1.22μg/L。
Chondrial mosquito larvae and Microcystis aeruginosa intracellular organic compounds (IOM) as the research object, investigated in different Microcystis aeruginosa and Chironomus larvae concentration, chloramine dosage, reaction time, p H value and temperature and other conditions disinfection The formation of byproducts. The results showed that when Microcystis aeruginosa or chironomid larvae were alone, the production of disinfection by-products was very little and the maximum value did not exceed 1.3 μg / L. When they coexisted, the formation of chloramine disinfection by-products increased significantly , But the trend is different. With the increase of TOC concentration, the formation of disinfection byproducts such as trichloromethane (TCM) and trichloroacetic acid (TCAA) with stable structure increased gradually. The chloral hydrate (CH) and dichloroacetone (DCP) The amount of production is the first increase and then decrease. With the increase of chloramine dosage, TCM, dichloroacetonitrile (DCAN), CH, DCP, dichloroacetic acid (DCAA) and TCAA production gradually increased. The yields of CH and DCP increased first and then decreased with the extension of reaction time, and reached the maximum at 48 h. The increase of p H value helps to increase the generation of TCM and TCAA. The amount of DCAN decreased with the increase of temperature, and the maximum of CH and DCP appeared at 20 ℃, which were 1.43 and 1.22μg / L, respectively.