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经过一次换水周期的连续池水监测,表明采用机械循环过滤池水COD含量低于人工沉淀吸污方法,二种净化方法COD含量比较有显著区别,P<0.05。单纯采用液氯消毒池水pH值偏酸性,均值为5.85,与采用漂白粉消毒的池水pH值比较差异非常显著,P<0.01。开放后两池水均受到CHCl_3污染,最高检出值分别为92.8μg/L和172.8μg/L,CHCl_3污染与池水使用时间、池水耗氧量均呈正相关。
After a continuous cycle of water exchange monitoring of the water cycle, indicating that the use of mechanical circulation filter tank water COD content was lower than the manual sedimentation method, two kinds of purification methods COD content was significantly different, P <0.05. The pure pH value of the liquid chlorine disinfection tank was slightly acidic, with a mean value of 5.85, which was significantly different from that of the bleached water (P <0.01). After the opening, both of the two ponds were contaminated by CHCl_3, with the highest detections of 92.8 μg / L and 172.8 μg / L, respectively. The CHCl_3 pollution was positively correlated with the time of using the pond water and the oxygen consumption of the pond water.