本文選題：垃圾滲濾液　切入點(diǎn)：工程設(shè)計(jì)　出處：《河北科技大學(xué)》2016年碩士論文　論文類型：學(xué)位論文

【摘要】：垃圾滲濾液是一種典型的高濃度難降解有機(jī)污染廢水,其水質(zhì)特點(diǎn)表現(xiàn)為水質(zhì)復(fù)雜、危害性大,COD、BOD、氨氮濃度高,水質(zhì)變化大,如不妥善處理,會(huì)對(duì)周圍環(huán)境及地下水造成嚴(yán)重污染。本文結(jié)合了沙河市生活垃圾填埋場(chǎng)滲濾液處理工程設(shè)計(jì),總結(jié)了國(guó)內(nèi)外垃圾滲濾液處理技術(shù)及其現(xiàn)狀,結(jié)合沙河市生活垃圾填埋場(chǎng)滲濾液水質(zhì)特點(diǎn)以及處理技術(shù)的可操作性和經(jīng)濟(jì)性的要求,確定采用“膜生物反應(yīng)器(MBR)+納濾(NF)+反滲透(RO)”組合處理工藝。本工程設(shè)計(jì)處理規(guī)模為50m~3·d-1,介紹了垃圾衛(wèi)生填埋場(chǎng)滲濾液處理工程設(shè)計(jì)中的幾個(gè)技術(shù)問(wèn)題,主要對(duì)生活垃圾衛(wèi)生填埋場(chǎng)滲濾液收集、處理系統(tǒng)進(jìn)行了設(shè)計(jì),進(jìn)一步設(shè)計(jì)了“MBR+NF+RO”處理工藝流程圖,并對(duì)預(yù)測(cè)結(jié)果進(jìn)行了分析,其設(shè)計(jì)出水水質(zhì)達(dá)到了《生活垃圾填埋場(chǎng)污染控制標(biāo)準(zhǔn)》(GB16889-2008)中的一級(jí)排放標(biāo)準(zhǔn),并對(duì)工程造價(jià)進(jìn)行了合理分析,以降低經(jīng)濟(jì)投資,獲得良好的環(huán)境效益。調(diào)試運(yùn)行結(jié)果表明:MBR系統(tǒng)對(duì)COD去除率均能保持在85%以上,氨氮去除率在92%以上;NF系統(tǒng)對(duì)COD去除率在90%以上,出水COD濃度穩(wěn)定在150mg·L~(-1)以下;RO系統(tǒng)進(jìn)一步降低了COD濃度,使出水穩(wěn)定保持在50mg·L~(-1)以下,做到了達(dá)標(biāo)排放;NF系統(tǒng)對(duì)氨氮的去除率約為30%,進(jìn)出水NH~3-N的含量變化在8mg·L~(-1)左右,因此可知NF系統(tǒng)對(duì)NH~3-N無(wú)顯著截留作用;RO系統(tǒng)對(duì)NH~3-N的去除效果相對(duì)顯著,出水NH~3-N的含量在5mg·L~(-1)左右。
[Abstract]:Landfill leachate is a typical high concentration refractory organic wastewater. Its water quality is characterized by complex water quality, great harmfulness, high concentration of ammonia nitrogen and great changes in water quality, such as improper treatment. This paper combines the leachate treatment project design of Shahe Municipal solid waste Landfill site, summarizes the domestic and foreign landfill leachate treatment technology and its present situation. Combined with the characteristics of leachate quality and the operational and economic requirements of treatment technology in Shahe municipal solid waste landfill, The combined treatment process of "membrane bioreactor (MBR) nanofiltration (NFN) reverse osmosis (ROA)" is determined. The design scale of the project is 50mm3 路d ~ (-1). Several technical problems in the design of landfill leachate treatment project are introduced. The leachate collection and treatment system of sanitary landfill was designed, and the flow chart of "MBR NF RO" treatment process was further designed, and the predicted results were analyzed. The designed effluent quality has reached the first class discharge standard of National refuse Landfill pollution Control Standard (GB16889-2008), and the project cost has been reasonably analyzed in order to reduce economic investment. The results of debugging and running show that the removal rate of COD is above 85%, and the removal rate of ammonia nitrogen is more than 92%. The removal rate of COD by NF system is more than 90%. The effluent COD concentration was stable at 150mg 路L ~ (-1)) and the COD concentration was further reduced by the RO system. The effluent water was kept below 50mg 路L ~ (-1). The removal rate of ammonia nitrogen was about 30mg 路L ~ (-1) by the NF system, and the content of NH~3-N in the effluent changed from 8 mg 路L ~ (-1) to 8 mg 路L ~ (-1). It is concluded that NF system has no significant interception of NH~3-N and RO system has a relatively significant removal effect on NH~3-N, and the content of NH~3-N in effluent is about 5 mg 路L ~ (-1).
【學(xué)位授予單位】：河北科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2016
【分類號(hào)】：X799.3

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本文編號(hào)：1619577