本文選題：BAF-MBR組合工藝 + 污水回用��； 參考：《哈爾濱工業(yè)大學(xué)》2015年碩士論文

【摘要】：水資源缺乏是影響人類文明發(fā)展的主要限制因素之一,我國水資源尤為缺乏。目前,我國對(duì)污水治理與回用的建設(shè)逐漸重視,對(duì)已建成的污水處理項(xiàng)目加強(qiáng)監(jiān)督管理并進(jìn)行提標(biāo)改造,是提高處理水質(zhì)至污水排放高標(biāo)準(zhǔn)與污水回用標(biāo)準(zhǔn)的主要途徑。本課題即是在污水處理廠原有工藝的基礎(chǔ)上,進(jìn)行BAF-MBR組合工藝的開發(fā)與優(yōu)化,力求在滿足城鎮(zhèn)污水排放一級(jí)A標(biāo)準(zhǔn)以及污水回用標(biāo)準(zhǔn)的前提下,對(duì)BAF-MBR組合系統(tǒng)進(jìn)行運(yùn)行優(yōu)化并降低能耗。本課題的主要研究內(nèi)容包括BAF-MBR組合系統(tǒng)的組裝啟動(dòng)與運(yùn)行效能研究、運(yùn)行參數(shù)的影響及優(yōu)化、系統(tǒng)的深度化學(xué)除磷技術(shù)研究。對(duì)前置BAF段采用復(fù)合式接種掛膜法掛膜,夏季啟動(dòng)耗時(shí)8 d,冬季耗時(shí)13 d;對(duì)后置MBR段,直接接種活性污泥進(jìn)行馴化。BAF-MBR組合系統(tǒng)處理效果明顯,具有一定的抗沖擊負(fù)荷能力,處理出水水質(zhì)穩(wěn)定達(dá)標(biāo),同時(shí)能有效控制膜污染。在本試驗(yàn)中,BAF段最佳運(yùn)行參數(shù)為:進(jìn)水流量100 L/d、氣水比2:1、回流比200%,此時(shí),BAF-MBR組合系統(tǒng)出水中COD、氨氮、TN的平均濃度為:7.11 mg/L、0.23mg/L、8.85 mg/L,平均去除率分別為94%、98%、58%。針對(duì)組合系統(tǒng)同步化學(xué)除磷進(jìn)行研究,除磷方案主要包括:前置BAF亞鐵鹽除磷、前置BAF鋁鹽除磷、后置MBR亞鐵鹽除磷和后置MBR鋁鹽除磷,這四種方案的最佳投藥量分別為20 mg/L、30 mg/L、25 mg/L和25 mg/L,藥耗成本分別為0.014元/t、0.036元/t、0.0175元/t和0.003元/t。前置BAF亞鐵鹽除磷對(duì)系統(tǒng)的處理效果及膜污染速率均沒有影響,同時(shí)藥耗成本較低;前置BAF鋁鹽除磷不利于系統(tǒng)對(duì)TN的去除效果,且加快了前置BAF濾料的堵塞速率;后置MBR亞鐵鹽除磷會(huì)加劇膜污染速率;后置MBR鋁鹽除磷雖然一定程度上能控制膜污染,但是其藥耗成本較高,同時(shí)會(huì)導(dǎo)致后置MBR的剩余污泥脫水性能較差。若條件允許在組合系統(tǒng)前設(shè)置混凝沉淀池,最佳的除磷方式為前置BAF投亞鐵鹽除磷;若無法設(shè)置混凝沉淀池,需要進(jìn)一步進(jìn)行藥耗與膜污染的成本對(duì)比分析。本課題指出BAF-MBR組合工藝的優(yōu)越性,研究影響組合系統(tǒng)處理效果的各項(xiàng)因素并進(jìn)行優(yōu)化,探明了在本組合系統(tǒng)中利用亞鐵鹽、鋁鹽在不同投藥點(diǎn)進(jìn)行同步化學(xué)除磷時(shí)的影響規(guī)律。本課題的研究有利于提高污水處理程度,實(shí)現(xiàn)污水的資源化利用,對(duì)于城鎮(zhèn)污水處理廠的提標(biāo)改造提供了理論與技術(shù)指導(dǎo)。
[Abstract]:Lack of water resources is one of the main limiting factors affecting the development of human civilization, especially in our country. At present, our country pays more and more attention to the construction of sewage treatment and reuse. Strengthening the supervision and management of the sewage treatment project and upgrading the standard are the main ways to improve the quality of water treatment to the high standard of sewage discharge and the standard of wastewater reuse. On the basis of the original process of sewage treatment plant, this paper develops and optimizes the BAF-MBR combination process, and strives to meet the first class A standard for urban sewage discharge and the wastewater reuse standard. Optimize the operation of BAF-MBR system and reduce energy consumption. The main research contents of this paper include the assembly start-up and operation efficiency of BAF-MBR system, the influence and optimization of operation parameters, and the deep chemical phosphorus removal technology of the system. The composite inoculation membrane hanging method was used in the front BAF section, which took 8 days to start in summer and 13 days in winter. For the MBR section after inoculation, the treatment effect of direct inoculation activated sludge acclimation. BAF-MBR system was obvious, and it had certain ability of resisting shock load. The quality of treated effluent is stable and up to standard, and membrane fouling can be effectively controlled at the same time. In this experiment, the optimum operating parameters of BAF are as follows: influent flow rate 100 L / d, air-water ratio 2: 1, reflux ratio 200. At this time, the average concentration of NH3-N TN in the effluent of the BAF-MBR system is 7. 11 mg / L, 0.23 mg / L, 8.85 mg / L, and the average removal rate is 94 / 9898 / L and 5858 / L, respectively. In this paper, the synchronous chemical phosphorus removal in the combined system is studied. The phosphorus removal schemes mainly include: phosphorus removal by BAF ferrous salt, aluminum phosphorus removal by BAF aluminum salt, phosphorus removal by post-MBR ferrous salt, and phosphorus removal by post-MBR aluminum salt. The optimal dosages of these four schemes are 20 mg / L 30 mg / L and 25 mg / L, respectively, and the cost of drug consumption is 0.014 yuan / t 0.036 yuan / t 0.0175 yuan / t and 0.003 yuan / t respectively. The removal of phosphorus by BAF iron salt had no effect on the treatment efficiency and membrane fouling rate of the system, and the cost of charge was low, and the phosphorus removal of the prefabricated BAF aluminum salt was not conducive to the removal of TN, and the blocking rate of the pre-BAF filter media was accelerated. The dephosphorization rate of membrane was aggravated by the phosphorus removal of MBR ferrous salt, and the dewatering performance of residual sludge after MBR was poor, although the phosphorus removal by aluminum salt of MBR could control the membrane fouling to some extent, but the drug consumption cost was high. If the conditions permit the setting of coagulation sedimentation tank in front of the combined system, the best way of phosphorus removal is to put ferrous salt in the front of BAF to remove phosphorus; if the coagulation sedimentation tank cannot be set up, the cost comparison analysis of drug consumption and membrane fouling should be carried out further. This paper points out the superiority of BAF-MBR combination process, studies and optimizes the factors that affect the treatment effect of the combined system, and explores the influence law of using ferrous salt and aluminum salt in the process of simultaneous chemical phosphorus removal at different dosing points in the combination system. The research of this subject is helpful to improve the degree of sewage treatment, realize the utilization of sewage resources, and provide theoretical and technical guidance for the upgrading of municipal wastewater treatment plant.
【學(xué)位授予單位】：哈爾濱工業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：X703.1

【參考文獻(xiàn)】

相關(guān)期刊論文 前7條

1 鄒聯(lián)沛,薛罡,王寶貞;膜生物反應(yīng)器中化學(xué)除磷的研究[J];中國給水排水;2002年11期

2 曾睿;曾慶枝;;中國水資源需求管理的現(xiàn)實(shí)問題與法制對(duì)策[J];創(chuàng)新;2015年01期

3 張軍,呂偉婭,聶梅生,王寶貞;MBR在污水處理與回用工藝中的應(yīng)用[J];環(huán)境工程;2001年05期

4 李偉英,許振良,董秉直,范瑾初;混凝超濾技術(shù)處理長江原水試驗(yàn)研究[J];化學(xué)世界;2002年S1期

5 俞開昌;薛濤;黃霞;夏俊林;陳春生;雷霆;關(guān)晶;文湘華;;MBR城市污水處理工藝中化學(xué)除磷的研究與應(yīng)用[J];膜科學(xué)與技術(shù);2013年01期

6 鄒海明;謝越;王艷;李飛躍;;水力負(fù)荷和回流比對(duì)前置反硝化BAF系統(tǒng)處理玉米青貯液的影響[J];環(huán)境工程學(xué)報(bào);2013年10期

7 傅金祥;顧丹亭;李微;陳東寧;;曝氣生物濾池復(fù)合式接種掛膜試驗(yàn)研究[J];沈陽建筑大學(xué)學(xué)報(bào)(自然科學(xué)版);2007年03期

相關(guān)博士學(xué)位論文 前1條

1 王樹濤;O_3/BAF聯(lián)合工藝深度處理生活污水二級(jí)出水的研究[D];哈爾濱工業(yè)大學(xué);2007年

相關(guān)碩士學(xué)位論文 前1條

1 馬艷娜;化學(xué)除磷強(qiáng)化A~2/O工藝脫氮除磷試驗(yàn)研究[D];鄭州大學(xué);2013年

，

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