本文關鍵詞：農(nóng)村生活與農(nóng)田灌溉混合污水人工濕地處理模式與效果分析　出處：《中南林業(yè)科技大學》2015年碩士論文　論文類型：學位論文

  更多相關文章： 人工濕地技術 生活污水 農(nóng)田灌溉水

【摘要】：水是人類生存和發(fā)展中必不可少的重要自然資源。隨著我國工業(yè)化、城鎮(zhèn)化和農(nóng)業(yè)現(xiàn)代化進程的加快,如何提高工業(yè)、農(nóng)業(yè)和生活污水處理水平和處理率,減少水污染對國民經(jīng)濟可持續(xù)發(fā)展的負面影響,是水生態(tài)文明建設的重要任務,而對于資金缺乏、污水處理率低、污水產(chǎn)生量大且分散的小型城鎮(zhèn)及農(nóng)村地區(qū),研究經(jīng)濟可行的污水處理工藝模式并應用于工程實踐,具有重要意義。本文分析了農(nóng)村生活污水與農(nóng)田灌溉污水的特點、處理工藝及相關案例,然后以攸州公園為例,探討了人工濕地處理生活與農(nóng)田灌溉混合污水處理的工藝模式,并對工藝模式的運行效果進行了研究,結果表明：(1)農(nóng)村生活污水具有廣泛性、分散性,來源多,增長快等污染特點,農(nóng)田灌溉污水具有隨機性、蔓延性、難監(jiān)測性、時空變化性、污染的滯后性和潛在威脅性等污染特點,我國農(nóng)村往往這兩種污水同時存在。因此,對兩種混合污水進行處理十分必要；人工濕地與其他污水處理技術相比,具出水水質(zhì)穩(wěn)定、抗沖擊力強、操作簡單、建設及運行費用低、污染物去除效果好且兼具美學價值等優(yōu)點,適合我國國情,尤其是滿足農(nóng)村污水處理要求。分析國內(nèi)外人工濕地技術在生活污水、農(nóng)業(yè)點源、面源污染以及富營養(yǎng)化水體等污水處理的成功應用,表明選用人工濕地處理農(nóng)村生活與農(nóng)田灌溉混合污水具有創(chuàng)新性和可行性。(2)通過對攸州公園水質(zhì)污染成因、進水水質(zhì)分析,根據(jù)出水水質(zhì)與水量的要求,確定采用“表流-潛流-表流”三級串聯(lián)人工濕地組合模式,將生活污水與農(nóng)田灌溉混合污水進行處理。工程建設規(guī)模：生活污水進水量和農(nóng)田灌溉污水進水量混合后總量1500m3/日,總面積：1500 m2；測定進水水質(zhì)為：生活污水COD:180.01 mg/L、TP:5.96 mg/L、TN:65.09 mg/L、NH3-N:42.51mg/L,農(nóng)田灌溉污水COD:50.08 mg/L、TP:2.63 mg/L、TN:25.09 mg/L、NH3-N:20.65mg/L;設計出水水質(zhì)達到GB 18918-2002《城鎮(zhèn)污水處理廠污染物排放標準》一級A標準。(3)對人工濕地系統(tǒng)運行后進出水水質(zhì)、植物生長情況、植物體內(nèi)N、P含量、植物根系微生物進行了分析,結果表明：出水中COD、TP、TN、NH3-N含量分別為40.56mg/L、0.55mg/L、10.55mg/L、5.55mg/L,達到了GB 18918-2002《城鎮(zhèn)污水處理廠污染物排放標準》一級A標準。系統(tǒng)中植物生長良好,根系發(fā)達,根際微生物豐富,且景觀效果較好。
[Abstract]:Water is an essential natural resource in the survival and development of human beings. As China's industrialization, urbanization and agricultural modernization, how to improve the industry, agriculture and life sewage treatment level and treatment rate, reduce the negative impact of water pollution on the sustainable development of the national economy, is an important task of water ecological civilization construction, and for the lack of funds, sewage treatment rate is low, the large amount of wastewater produced and scattered small towns and rural areas, the research process of sewage treatment economically feasible and should be used in engineering practice, has important significance. This paper analyzes the rural sewage irrigation and sewage treatment process, characteristics and relevant cases, and then to Yau State Park as an example, discusses the artificial wetland treatment of life dealing with mixed sewage irrigation process model, and the operating effect of process mode were studied, results showed that: (1) rural sewage has extensive, decentralized, multiple sources of fast growth, pollution characteristics, sewage irrigation is random, spread, difficult to monitor, spatial and temporal variability, pollution characteristics and potential threats of lag of pollution in rural areas of China, the two sewage often exist at the same time. Therefore, it is necessary to two kinds of mixed sewage treatment; compared with other artificial wetland sewage treatment technology, with stable effluent quality, strong shock resistance, simple operation, low construction and operation cost, the pollutant removal effect is good and has the advantages of aesthetic value, suitable for the national conditions of our country, especially to meet the requirements of rural sewage treatment. The successful application of constructed wetland technology in domestic sewage, agricultural point source, non-point source pollution and eutrophication water treatment is analyzed. It shows that it is innovative and feasible to choose constructed wetland to treat the mixed sewage of rural life and farmland irrigation. (2) through the analysis of the causes of water quality, water pollution water park Yau state, according to the water quality and quantity requirements, determine the "surface flow subsurface flow and surface flow artificial wetland combination model three series, sewage irrigation and mixed sewage. Construction scale: the amount of water and sewage irrigation sewage water volume 1500m3/, the amount of mixed total area: 1500 m2; Determination of water quality: COD:180.01 mg/L, TP:5.96 sewage mg/L, TN:65.09, mg/L NH3-N:42.51mg/L, COD:50.08 /L, Mg sewage irrigation TP:2.63 mg/L, TN:25.09 mg/L, NH3-N:20.65mg/L; design the effluent quality reached GB 18918-2002 "cities sewage treatment plant pollutant discharge standard" level A standard. (3) the artificial wetland system after running out of the water quality, plant growth, N and P content in plants, plant roots and microorganisms were analyzed, the results showed that COD, TP, TN, NH3-N, 0.55mg/L contents were 40.56mg/L, 10.55mg/L and 5.55mg/L in the effluent reached GB 18918-2002, the "urban sewage treatment plant pollutant" the discharge standard of grade A standards. In the system, the plants grow well, the root system is developed, the rhizosphere microbes are rich and the landscape effect is good.
【學位授予單位】：中南林業(yè)科技大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：X703

【參考文獻】

相關期刊論文 前9條

1 王薇,俞燕,王世和;人工濕地污水處理工藝與設計[J];城市環(huán)境與城市生態(tài);2001年01期

2 孫廣智,Ｋ．Ｒ．Ｇｒａｙ,Ａ．Ｊ．Ｂｉｄｄｌｅｓｔｏｎｅ;下行流蘆葦床污水處理試驗研究與設計方程[J];中國給水排水;1997年S1期

3 王保學;王銀川;;小城鎮(zhèn)污水處理現(xiàn)狀與展望[J];國外建材科技;2007年01期

4 胡國光,曹向東,穆瑞林;深圳市沙田人工濕地污水廠簡介[J];給水排水;2003年08期

5 沈豐菊;張克強;宋成軍;楊鵬;喬汪硯;孫仁偉;;農(nóng)田徑流水無害化處理技術評價方法及模式研究[J];農(nóng)業(yè)工程技術(新能源產(chǎn)業(yè));2011年09期

6 湯顯強;李金中;李學菊;劉學功;黃歲j;;人工濕地不同填料去污性能比較[J];水處理技術;2007年05期

7 晉勇;;人工濕地對城鎮(zhèn)生活污水處理的研究[J];陜西煤炭;2010年01期

8 李懷恩;流域非點源污染模型研究進展與發(fā)展趨勢[J];水資源保護;1996年02期

9 龐s，

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