【摘要】：西太湖流域產(chǎn)業(yè)、人口集聚,水環(huán)境污染一直以來是該區(qū)域經(jīng)濟(jì)可持續(xù)發(fā)展的制約因素之一,利用2010年的監(jiān)測數(shù)據(jù)對西太湖主要入湖河流及湖體的水環(huán)境狀況進(jìn)行了分析,通過對研究區(qū)域工業(yè)點(diǎn)源、城鎮(zhèn)和農(nóng)村生活源、農(nóng)田面源和畜禽水產(chǎn)污染源排污的分布情況調(diào)查,并計(jì)算了入河污染物量;利用構(gòu)建的西太湖區(qū)域水量水質(zhì)數(shù)學(xué)模型,估算了區(qū)域水環(huán)境容量,依據(jù)水環(huán)境功能區(qū)的水質(zhì)目標(biāo)與水域面積分配到了各市/區(qū),在充分調(diào)查現(xiàn)有與規(guī)劃的各類型污染源總量控制工程措施的基礎(chǔ)上,量化出具有空間分布的流域污染削減率,并提出水質(zhì)可控目標(biāo)。結(jié)果表明:太湖湖體受總氮污染影響總體水質(zhì)劣于Ⅴ類,研究區(qū)域主要入湖河流基本處于Ⅳ類,氨氮超標(biāo)最嚴(yán)重;進(jìn)入水體的COD為25 410.2t/a,氨氮2 795.4t/a,總氮4 646.4t/a,總磷313.8t/a,其中城鎮(zhèn)生活源污染物入河量所占的比例最大,各類污染物均在35%~50%,尤以宜興市和常州武進(jìn)區(qū)負(fù)荷較大;各控制單元進(jìn)入水體的污染物量基本都超過了水環(huán)境容量,近期各市/區(qū)COD、氨氮、總氮和總磷的削減率分別為8.0%~56.0%,8.0%~62.1%,6.0%~41.8%,8.0%~59.9%,遠(yuǎn)期污染物削減率更高;最終通過模型推算,定出西太湖湖體各污染因子的可控目標(biāo),2015年,COD、氨氮、總氮和總磷分別為4.50、0.80、3.50和0.08 mg/L,2020年進(jìn)一步達(dá)到4.50、0.60、3.00和0.07mg/L,為西太湖總量控制提供科學(xué)依據(jù)。
[Abstract]:The industry, population concentration and water environment pollution in the West Taihu Lake Basin have been one of the restrictive factors for the sustainable development of the region's economy. Using the monitoring data of 2010, the paper analyzes the water environment of the main rivers and bodies of the West Taihu Lake. By investigating the distribution of industrial point sources, urban and rural living sources, farm non-point sources and livestock and poultry pollution sources, the amount of pollutants into the river was calculated. Based on the mathematical model of water quantity and water quality in West Taihu Lake, the regional water environment capacity is estimated. According to the water quality target of the water environment function area and the water area, the water environment capacity is allocated to each city / district. Based on the investigation of the existing and planned total amount control measures of various types of pollution sources, the reduction rate of watershed pollution with spatial distribution is quantified, and the water quality controllable target is put forward. The results show that the total water quality of Taihu Lake affected by total nitrogen pollution is worse than that of class V. the main rivers entering the lake in the study area are basically in category 鈪，

本文編號：2364726