本文選題：農(nóng)田 + 排水��； 參考：《農(nóng)業(yè)工程學(xué)報(bào)》2017年10期

【摘要】：濕地是一種能夠有效治理農(nóng)業(yè)非點(diǎn)源污染的生態(tài)設(shè)施;在一些無法建設(shè)人工濕地的地區(qū),現(xiàn)存的排水溝塘系統(tǒng)具有類似濕地的水質(zhì)凈化效果。為研究排水溝塘的分布以及其與農(nóng)田水力聯(lián)系對(duì)其水質(zhì)凈化能力的影響,該文以揚(yáng)州市江都區(qū)昭關(guān)灌區(qū)為例,首先通過實(shí)地調(diào)查,明確研究區(qū)不同形式溝塘的分布規(guī)律,確定溝塘與農(nóng)田逐級(jí)詳細(xì)水力聯(lián)系,然后建立理論分析模型,分別計(jì)算考慮與不考慮水力聯(lián)系2種情況下,溝塘的污染物去除能力。結(jié)果表明,考慮水力聯(lián)系后,污染物去除能力為不考慮水力聯(lián)系的70%~84%;水質(zhì)凈化作用主要集中在一些面積較大的支溝和池塘。從農(nóng)田排水的角度考慮,尺寸較大溝塘?xí)霈F(xiàn)一定的水力冗余,但是從水質(zhì)改善的角度看,則有必要保留。研究區(qū)可通過較為簡(jiǎn)單的工程措施來優(yōu)化水力聯(lián)系,提高其污染物的去除能力。
[Abstract]:Wetland is a kind of ecological facility which can effectively control agricultural non-point source pollution. In some areas where artificial wetland can not be constructed, the existing drainage ditch and pond system has similar water quality purification effect as wetland. In order to study the distribution of drainage ditch pond and the influence of its hydraulic connection with farmland on its water quality purification ability, this paper takes Zhaoguan Irrigation District, Jiangdu District, Yangzhou City as an example, first of all, through field investigation, the distribution law of different forms of ditch ponds in the study area is clarified. The detailed hydraulic relation between ditch pond and farmland was determined, and the theoretical analysis model was established to calculate the pollutant removal capacity of ditch pond under the condition of considering or not considering hydraulic connection. The results showed that the removal capacity of pollutants was 70% without hydraulic connection, and the purification effect of water quality was mainly concentrated in some large branch ditches and ponds. From the point of view of farmland drainage, there will be some hydraulic redundancy in the larger gully pond, but it is necessary to keep it from the point of view of water quality improvement. The study area can optimize hydraulic connection and improve its pollutant removal ability through relatively simple engineering measures.
【作者單位】： 揚(yáng)州大學(xué)水利與能源動(dòng)力工程學(xué)院;
【基金】：國家自然科學(xué)基金資助項(xiàng)目(51279159) 江蘇高校優(yōu)勢(shì)學(xué)科建設(shè)工程資助項(xiàng)目(PAPD) 江蘇省水利科技項(xiàng)目(2016049)
【分類號(hào)】：S27;X71

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