本文選題：草甘膦 + 氧化降解　； 參考：《山東大學(xué)》2015年碩士論文

【摘要】：草甘膦是一種高效、低毒、安全的廣譜除草劑,內(nèi)吸、傳導(dǎo)性能優(yōu)良,是當(dāng)前使用劑量最大的除草劑產(chǎn)品。草甘膦的生產(chǎn)廢水具有排放量大、污染物濃度高、含鹽量高、難降解化合物含量高和治理難度大等問題,這些殘留液體或者難降解的產(chǎn)物對環(huán)境造成了極大的危害,對人們的正常生產(chǎn)和生活構(gòu)成了嚴(yán)重的威脅。根據(jù)草甘膦的生產(chǎn)工藝,當(dāng)前的草甘膦廢水處理工藝主要是采用濃縮除鹽后配置成10%的草甘膦水劑通過水解、沉淀等物理方法進行處理,極易產(chǎn)生大量含有機雜質(zhì)的結(jié)晶鹽而造成土壤粘滯的問題,同時這些傳統(tǒng)的處理工藝存在反應(yīng)回收率和純度較低、處理成本較高的問題。因此,探索高效節(jié)能的組合處理工藝實現(xiàn)草甘膦有效處理是本論文的關(guān)鍵問題也是主要研究內(nèi)容之一。本文對傳統(tǒng)的氧化沉淀等草甘膦廢水處理工藝進行了系統(tǒng)全面的梳理,針對濟南市某農(nóng)藥生產(chǎn)廠家草甘膦生產(chǎn)廢水排放量大、成分復(fù)雜、COD質(zhì)量濃度高,普通生化方法難以降解等的問題,研究分析利用微波輻照-fenton試劑協(xié)同處理草甘膦生產(chǎn)廢水的工藝流程和裝置,確定最佳實驗條件和工藝流程。主要開展如下工作：(1)針對不同企業(yè)草甘膦生產(chǎn)工藝的特點,進一步處理濃縮液,通過氧化法降解濾液中的亞磷酸,有效降低剩余溶液中COD和總磷的濃度,通過結(jié)晶將草甘膦從廢水中分離提取,通過添加Ca(OH)2的方法結(jié)晶剩余濾液,將磷轉(zhuǎn)化成磷酸鈣鹽以待進一步利用。(2)通過對濟南市某農(nóng)藥生產(chǎn)廠家產(chǎn)生的草甘膦生產(chǎn)廢水進行fenton試劑-混凝處理,探討fenton試劑和混凝法處理濟南市某農(nóng)藥生產(chǎn)企業(yè)在草甘膦生產(chǎn)過程中產(chǎn)生的廢液的處理工藝和技術(shù),分析在fenton試劑和混凝法處理草甘膦廢水過程中的影響因素,通過正交實驗確定最佳實驗條件和工藝流程。(3)研究微波輻照-fenton試劑協(xié)同方法處理草甘膦廢水過程中各種影響因素對降解效果的影響,進而確定最佳反應(yīng)條件,最終構(gòu)建大規(guī)模推廣的中試處理系統(tǒng),并考察中試試驗效果,確保經(jīng)過處理的草甘膦廢水達到了濟南市工業(yè)廢水排放標(biāo)準(zhǔn)。(4)通過對合成草甘膦處理工藝的實際運行結(jié)果驗證本文提出的草甘膦處理方法的效率,跟蹤處理效果,進而為大規(guī)模工廠化實施奠定基礎(chǔ)。
[Abstract]:Glyphosate is a kind of high efficiency, low toxicity, safe broad-spectrum herbicide with good internal absorption and good conductivity.The wastewater from glyphosate production has many problems, such as large discharge, high pollutant concentration, high salt content, high content of refractory compounds and difficult to treat. These residual liquids or refractory products have caused great harm to the environment.It poses a serious threat to the normal production and life of people.According to the production process of glyphosate, the current treatment process of glyphosate wastewater is mainly treated by physical methods such as hydrolysis, precipitation and so on.It is easy to produce a large amount of crystalline salt containing organic impurities and cause the problem of soil viscosity. At the same time these traditional treatment processes have the problems of low reaction recovery and purity and high treatment cost.Therefore, it is the key problem and one of the main research contents to explore the combination treatment process of high efficiency and energy saving to realize glyphosate effective treatment.In this paper, the traditional treatment process of glyphosate wastewater, such as oxidation and precipitation, is systematically and comprehensively combed. The wastewater from glyphosate production in a pesticide factory in Jinan has a large amount of discharge and a high concentration of COD with complex composition.The common biochemical methods are difficult to degrade. The technological process and equipment for the synergistic treatment of glyphosate wastewater by microwave irradiation with fenton reagent are studied and the optimum experimental conditions and technological process are determined.The main work is as follows: (1) according to the characteristics of glyphosate production process in different enterprises, the concentrated solution is further treated, the phosphorous acid in the filtrate is degraded by oxidation, and the concentration of COD and total phosphorus in the remaining solution is effectively reduced.Glyphosate was separated and extracted from wastewater by crystallization, and residual filtrate was crystallized by adding Ca(OH)2.Conversion of phosphorus to calcium Phosphate to be further utilized. Treatment of glyphosate wastewater produced by a pesticide manufacturer in Jinan by fenton reagent coagulation.This paper discusses the treatment process and technology of waste liquid produced in glyphosate production process in a pesticide production enterprise in Jinan by fenton reagent and coagulation method, and analyzes the influencing factors in the treatment of glyphosate wastewater by fenton reagent and coagulation method.The optimum experimental conditions and technological process were determined by orthogonal experiment.) the effects of various factors on the degradation of glyphosate wastewater treated by microwave irradiation-fenton reagent synergistic method were studied, and the optimum reaction conditions were determined.Finally, the pilot-scale pilot treatment system was constructed, and the effect of the pilot test was investigated.To ensure that the treated glyphosate wastewater meets the discharge standard of industrial wastewater of Jinan City, the efficiency of the method proposed in this paper is verified by the actual operation results of synthetic glyphosate treatment process, and the effect of the treatment is tracked.And then lay the foundation for the implementation of large-scale factory.
【學(xué)位授予單位】：山東大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：X786

【參考文獻】

相關(guān)期刊論文 前1條

1 陳時博;胡春玲;劉明浩;;草甘膦農(nóng)藥廢水處理工程改造設(shè)計[J];工業(yè)用水與廢水;2013年05期

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本文編號：1752939