汉江下游水污染协同控制探讨

DISCUSSION ON SYNERGETIC CONTROL OF WATER POLLUTION IN THE LOWER REACHES OF HANJIANG RIVER

以一维河流单种污染物的水污染协同控制理论为基础,以汉江武汉段水质达到国家III级为目的,探讨了河流的水污染控制量。根据各排污口的实测CODCr、BOD5、NH3-N浓度和排放流量,结合河流的流量和水质标准,得出汉江武汉段的水污染协同控制量。计算结果表明,汽配排污口BOD5排放量需削减198 t/a,汉正下河街排污口BOD5排放量需削减617 t/a,其它排污口BOD5排放量在允许值范围以内;各排污口的CODCr排放量均在允许值范围以内;国棉三厂排污口NH3-N排放量需削减57 t/a,汉正下河街排污口NH3-N排放量需削减95 t/a,其它排污口NH3-N排放量在允许值范围以内。该方法充分考虑各污染源合理利用环境的自然降解能力,比简单要求每个污染源都达标排放更合理,对各污染源也更加公平,也容易被排污企业接受,具有一定的实用价值。

On the basis of one-dimensional river water pollution synergetic control model for single pollutant contamination, water pollution control was discussed in purpose of achieving the water quality standard Ⅲ in reaches of Hanjiang River in Wuhan. Discharged quantity of each pollutant source was calculated according to measured concentration and quantity of CODcr, BOD5 and NH3-N. As for BOD5, 198 tons have to be reduced in Qipei discharge outlet each year, 617 tons in Hanzhengxiahe street discharge outlet, while all others reached the national water quality standard. For CODer, all the discharge outlet reached wate year It is of se r quality standard. For NH3-N, 57 tons have to be reduced in Guomiansanchang discharge outlet each and 95 tons in Hanzhengxiahe street discharge outlet, and all others met the water quality standard. indicated that the water pollution synergetic control model is rational and justifiable for the enterprises wage discharge, and thus the proposed method has some realistic significance.