摘要
本文针对火(核)电厂冷却水中余氯排放后的衰减规律和主要影响其衰减的因素进行了现场研究。在余氯排放对水环境影响分析的基础上,在现场用邻联甲苯胺比色法观测温排水中余氯浓度衰减变化规律,并在实验室内进行对照实验,对影响其衰减的主要因素进行定量研究。实验研究表明,余氯在最初的一段时间内衰减迅速,随着时间的延长,浓度衰减速率变缓,影响其衰减的主要因素有光照、水体性质、水温和水的pH值等,其影响因素中光照和水体性质的影响大于其他因素,特别是在余氯最初的衰减阶段更为明显。
The residual chlorine variation in cooling water discharged from the Shidongkou Thermal Power Plant was measured by means of o-tolidine colorimetry.The attenuation law of residual chlorine and the factors affecting its reduction are analyzed according to the observed data.Verification test was carried out in laboratory.It is found that the residual chlorine reduces rapidly at first and attenuate slowly as the duration increases.The primary factors affecting the attenuation are illumination,characteristics of water body,temperature and PH value of water.Among them the first two factors are most important.
出处
《水利学报》
EI
CSCD
北大核心
2004年第5期94-98,共5页
Journal of Hydraulic Engineering
关键词
余氯
浓度阈值
衰减速率
现场实验
室内实验
residual chlorine
threshold concentration
attenuation law
field experiment
laboratory verification
