摘要
为探究基于流域水质目标的入河排污口排放标准与排污许可的实施路径,以北京清河为例,通过入河排污口实地摸排,确定了22个入河排污口和5个河道断面,并于2019年3—10月对27个采样点进行12次水样采集,对水样COD、氨氮、TN和TP进行检测。基于研究河段实测数据,应用MIKE11模型构建流域水动力水质模型,分析3种情景组合的截污纳管方案(方案1)、截污减排方案(方案2)对河段水质的改善效果,以及减排方案在雨期、非雨期对河段水质的污染影响。结果表明:(1)与方案1相比,方案2下研究河段水质状况明显改善,下游出水断面(Q5断面)的COD、氨氮、TN和TP模拟值分别降低49.08%、61.27%、65.80%、63.86%;COD、氨氮、TN和TP排放总量分别削减了541.95、46.13、216.79、8.30 t/a。(2)雨期雨水汇入河段后,各污染物达标情况反而恶化,因此应做好入河排污口的污染管控,科学控制入河排污口雨期污染。
In order to explore the implementation path of discharge standard and discharge permission for sewage outlets on rivers based on watershed water quality objectives,taking Qinghe River in Beijing as an example,field inspection and confirmed 22 sewage outlets on rivers and 5 river sections,and 12 water samples were collected from 27 sampling points in March-October 2019 to detect COD,ammonia nitrogen,TN and TP indexes of water samples.Based on the measured data of the researched river section,the MIKE11 model was applied to construct the hydrodynamic and water quality model,then the effect of the three scenarios combined with the sewage interception pipe schemes(scheme 1)and the pollution interception and discharge reduction schemes(scheme 2)on the river water quality was evaluated,as well as the impact of two schemes on the river water quality during the rainy and non-rainy period was analyzed.The results showed that:(1)compared with the results of scheme 1,the water quality of the river in the scheme 2 was significantly reduced,the simulated concentration of various indicators in the downstream water outlet section(Q5)was reduced by 49.08%,61.27%,65.80%,63.86%.The total pollutant discharge were reduced by 541.95,46.13,216.79,8.30 t/a.(2)It was found that the indicators compliance situation became worse after the rainwater flowed into the watershed,therefore,it was necessary to do an effective pollution control in the sewage outlets on river,and scientifically control the rain-period pollution at river sewage outlets.
作者
覃露
叶维丽
韩旭
郭送军
陈荣志
张帆
QIN Lu;YE Weili;HAN Xu;GUO Songjun;CHEN Rongzhi;ZHANG Fan(School of Resource,Environment and Materials,Guangxi University,Nanning Guangxi 530004;Research Center for Beijing-Tianjin-Hebei Regional Environmental Cooperation,Chinese Academy of Environmental Planning,Beijing 100012;College of Resources and Environment,University of Chinese Academy of Sciences,Beijing 100049;Beijing Water Science and Technology Institute,Beijing 100048)
出处
《环境污染与防治》
CAS
CSCD
北大核心
2020年第9期1102-1107,共6页
Environmental Pollution & Control
基金
国家水体污染控制与治理科技重大专项(No.2018ZX07111001)。
关键词
入河排污口
排放标准
排污许可
MIKE11模型
清河
pollution discharge outlets
discharge standard
sewage discharge permission
MIKE11 model
Qinghe River
作者简介
第一作者:覃露,女,1996年生,硕士研究生,研究方向为水污染源防治研究;通讯作者:韩旭。
