遼河盤(pán)錦段水體污染特征和自?xún)粜袨檠芯?/H1>
發(fā)布時(shí)間：2019-02-19 09:40
【摘要】：遼河盤(pán)錦段,地處遼河三角洲,是遼河濕地的重要水生態(tài)系統(tǒng)。過(guò)去,由于盲目追求經(jīng)濟(jì)發(fā)展,忽視對(duì)環(huán)境的治理,該河段污染較嚴(yán)重。近年來(lái),隨著政府對(duì)水環(huán)境問(wèn)題的重視,遼河盤(pán)錦段水污染得到了遏制。尤其是2005以來(lái),遼河流域的水質(zhì)逐漸轉(zhuǎn)好,截止到2014年,主要干流斷面興安斷面、曙光大橋、趙圈河斷面的水質(zhì)由劣Ⅴ類(lèi)轉(zhuǎn)變?yōu)棰纛?lèi)水質(zhì)。為了使遼河盤(pán)錦段水質(zhì)得以持續(xù)改善,需要研究遼河盤(pán)錦段水體的污染特征與自?xún)粜袨?為地區(qū)排放總量的制定提供參考。根據(jù)此,本文首先調(diào)查盤(pán)錦段水質(zhì)現(xiàn)狀、周邊環(huán)境以及盤(pán)錦段所在地城市發(fā)展情況；然后利用主成分分析法對(duì)枯、豐、平三個(gè)水期進(jìn)行污染狀況評(píng)估,進(jìn)而得出三個(gè)時(shí)期水中污染物組分的不同比例,確定不同時(shí)期的主要污染指標(biāo)。調(diào)查遼河盤(pán)錦段附近的各個(gè)污水處理廠(chǎng)在排放源頭的初始污染物濃度及在水體中監(jiān)測(cè)的水質(zhì)指標(biāo)濃度,確定污染物削減量,利用水質(zhì)模型求出2013年水環(huán)境容量值,發(fā)現(xiàn)實(shí)際排污量小于水環(huán)境容量,說(shuō)明水體自?xún)糇饔脤?duì)污染物削減起很大作用。為了評(píng)估遼河盤(pán)錦段的自?xún)粜袨?以2007-2013年期間的一維水質(zhì)模型為基礎(chǔ),設(shè)置耗氧系數(shù)和復(fù)氧系數(shù)兩個(gè)關(guān)鍵參數(shù),得出遼河盤(pán)錦段水體自?xún)粝禂?shù),確定水體自?xún)魧?duì)水體污染物削減的貢獻(xiàn)。結(jié)果表明：遼河盤(pán)錦段水體自?xún)粝禂?shù)逐年增大,說(shuō)明遼河盤(pán)錦段水體自?xún)糇饔谜谔嵘?水體自?xún)糇饔脤?duì)于降低河流污染物濃度的貢獻(xiàn)增大。
[Abstract]:Panjin section of Liaohe River, located in Liaohe Delta, is an important aquatic ecosystem of Liaohe wetland. In the past, due to blind pursuit of economic development and neglect of environmental control, the river was polluted seriously. In recent years, water pollution in Panjin section of Liaohe River has been restrained with the government paying more attention to water environmental problems. Especially since 2005, the water quality of Liaohe River basin has gradually improved. By 2014, the water quality of the main stream section Xingan section, Shuguang Bridge and Zhaoquan River section has changed from bad 鈪，
本文編號(hào)：2426379
本文鏈接：http://www.sikaile.net/kejilunwen/huanjinggongchenglunwen/2426379.html
[Abstract]:Panjin section of Liaohe River, located in Liaohe Delta, is an important aquatic ecosystem of Liaohe wetland. In the past, due to blind pursuit of economic development and neglect of environmental control, the river was polluted seriously. In recent years, water pollution in Panjin section of Liaohe River has been restrained with the government paying more attention to water environmental problems. Especially since 2005, the water quality of Liaohe River basin has gradually improved. By 2014, the water quality of the main stream section Xingan section, Shuguang Bridge and Zhaoquan River section has changed from bad 鈪，
本文編號(hào)：2426379
本文鏈接：http://www.sikaile.net/kejilunwen/huanjinggongchenglunwen/2426379.html
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