發(fā)布時(shí)間：2018-06-16 07:30

  本文選題：兼氧 + 膜生物反應(yīng)器�。� 參考：《江西理工大學(xué)》2016年碩士論文

【摘要】：印染廢水,因其有機(jī)物含量高、成分復(fù)雜、色度深、水質(zhì)變化大而成為國(guó)內(nèi)外公認(rèn)的難處理工業(yè)廢水之一。目前,雖然已有多種處理印染廢水的傳統(tǒng)工藝和方法,但在實(shí)際運(yùn)行中,或因占地面積大,或因處理成本高,或因工藝條件苛刻、操作復(fù)雜,或因出水水質(zhì)難以穩(wěn)定達(dá)標(biāo),仍然沒(méi)有被環(huán)境工作者廣為接受的工藝技術(shù)。隨著新環(huán)保法的實(shí)施,傳統(tǒng)工藝更是受到了嚴(yán)重挑戰(zhàn),為與大型工程項(xiàng)目相銜接,本研究采用了一套有效容積為65m3的兼氧膜生物反應(yīng)器(兼氧FMBR),對(duì)江西某印染廠排放的實(shí)際廢水進(jìn)行處理。在實(shí)驗(yàn)第一階段,水力停留時(shí)間(HRT)為30小時(shí)(h)時(shí),系統(tǒng)對(duì)各種污染物表現(xiàn)出很好的去除效果,設(shè)備出水水質(zhì)穩(wěn)定達(dá)到國(guó)家《紡織染整工業(yè)水污染物排放標(biāo)準(zhǔn)》(GB 4287-2012)2015年修改后的要求。為優(yōu)化實(shí)驗(yàn)工藝的參數(shù),首先尋求系統(tǒng)的最佳HRT,使反應(yīng)器HRT在20h、18h和15h下分別運(yùn)行半個(gè)月,結(jié)果表明,只有當(dāng)HRT為15h時(shí),反應(yīng)器出水COD和色度不能穩(wěn)定達(dá)到國(guó)家直接排放要求。為進(jìn)一步降低實(shí)驗(yàn)裝置的能耗,在保證系統(tǒng)出水水質(zhì)穩(wěn)定達(dá)標(biāo)(HRT為18h)的前提下,通過(guò)控制曝氣量進(jìn)行了反應(yīng)器內(nèi)溶解氧(DO)調(diào)整,膜區(qū)和兼性區(qū)DO分別由原來(lái)1.5-2.0mg/L和0.5-1.0mg/L調(diào)整為1.0-1.5mg/L和0.5mg/L以下。結(jié)果表明,在相同的HRT下,兼性區(qū)DO的降低有利于反應(yīng)器對(duì)廢水中COD和色度的去除,平均去除率分別提高1.0%和0.3%,而對(duì)NH3-N的去除效率大大降低,使出水NH3-N濃度高于國(guó)家直接排放要求,從而確定本實(shí)驗(yàn)最佳HRT為18h,膜區(qū)最佳DO為1.5-2.0mg/L、兼性區(qū)最佳DO為0.5-1.0mg/L,此時(shí),出水COD平均值為67.7 mg/L,平均去除率為88.5%;出水NH3-N平均值為7.1mg/L,平均去除率為81.7%;出水色度平均為39倍,平均去除率為90.6%。研究了膜的截留對(duì)COD、NH3-N及色度去除作用的程度,結(jié)果表明,膜對(duì)COD和色度有較好的截留效果,對(duì)NH3-N幾乎沒(méi)有截留作用;兼氧FMBR對(duì)污染物的去除效果受HRT、DO、污泥負(fù)荷、溫度、進(jìn)水COD濃度、進(jìn)水NH3-N濃度、p H值及污泥濃度等操作條件和因素的影響;分析了反應(yīng)器運(yùn)行過(guò)程中污泥的各方面變化。最后對(duì)兼氧FMBR的相關(guān)機(jī)理進(jìn)行了分析探討,并闡述了相關(guān)的理論基礎(chǔ)。
[Abstract]:Printing and dyeing wastewater is recognized as one of the refractory industrial wastewater because of its high organic content, complex composition, deep chromaticity and great change of water quality. At present, although there are many traditional processes and methods for the treatment of printing and dyeing wastewater, in actual operation, either because of the large area, or because of the high treatment cost, or because of the harsh process conditions, the operation is complicated, or the effluent quality is difficult to reach the standard. There is still no technology widely accepted by environmental workers. With the implementation of the new environmental protection law, the traditional technology has been faced with serious challenges, in order to link up with large-scale projects, In this study, a set of facultative membrane bioreactor (FMBR) with effective volume of 65m3 was used to treat the actual wastewater discharged from a printing and dyeing factory in Jiangxi Province. In the first stage of the experiment, when HRT was 30 hours, the system showed a good effect on the removal of various pollutants. The effluent quality of the equipment meets the requirements of the National discharge Standard for Water pollutants in Textile dyeing and finishing Industry (GB 4287-2012) in 2015. In order to optimize the parameters of the experimental process, the optimal HRT of the system was first sought, and the HRT of the reactor was operated for half a month at 20 h or 15 h, respectively. The results showed that the effluent COD and chroma of the reactor could not meet the national direct discharge requirements when HRT was 15 h. In order to further reduce the energy consumption of the experimental equipment, under the premise that the effluent quality of the system is up to the standard of HRT (18 h), the dissolved oxygen (DOO) in the reactor is adjusted by controlling the aeration rate. The membrane region and facultative region do were adjusted from 1.5-2.0 mg / L and 0.5-1.0 mg / L to 1.0-1.5 mg / L and 0.5 mg / L respectively. The results showed that under the same HRT, the reduction of do in the facultative zone was beneficial to the removal of COD and chromaticity in the reactor, the average removal rate was increased by 1.0% and 0.3%, respectively, while the removal efficiency of NH3-N was greatly reduced. The effluent NH3-N concentration is higher than the national direct discharge requirement, and the best HRT is 18 h, the best do in the membrane region is 1.5-2.0 mg / L, the best do in the facultative zone is 0.5-1.0 mg / L, at this time, the best HRT is 18 h, and the best do in the facultative zone is 0.5-1.0 mg / L. The average COD of effluent is 67.7 mg / L, the average removal rate is 88.5, the average value of effluent NH3-N is 7.1 mg / L, the average removal rate is 81.7%, the average chroma of effluent is 39 times, the average removal rate is 90.6%. The effect of membrane retention on COD NH3-N and chromaticity removal was studied. The results showed that the membrane had a good retention effect on COD and chroma, and had little effect on NH3-N, and the removal effect of facultative FMBR on pollutants was affected by HRTDO, sludge load, temperature, etc. The influence of operating conditions and factors such as influent COD concentration, influent NH3-N concentration, sludge concentration and so on were analyzed. Finally, the related mechanism of facultative FMBR is analyzed and discussed, and the relevant theoretical basis is expounded.
【學(xué)位授予單位】：江西理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2016
【分類號(hào)】：X791

【相似文獻(xiàn)】

相關(guān)期刊論文 前10條

1 計(jì)海鷹,吳吉軍;二級(jí)串聯(lián)兼氧+好氧法處理中藥廢水[J];江西化工;2004年04期

2 侯偉平,熊移民;兼氧法處理醫(yī)院綜合污水[J];鐵道勞動(dòng)安全衛(wèi)生與環(huán)保;2002年01期

3 彭武厚;陸鑫;嚴(yán)青;;生物難降解物的克星——三維電解技術(shù)與兼氧處理法簡(jiǎn)介[J];太陽(yáng)能;2008年01期

4 牛櫻,陳季華;兼氧-好氧工藝處理香料廢水的實(shí)驗(yàn)研究[J];工業(yè)用水與廢水;2002年03期

5 李茵;兼氧技術(shù)應(yīng)用于有機(jī)污泥的處理[J];化工環(huán)保;2002年01期

6 王玉柏;楊照地;蘇志廣;崔寧;;兼氧生物法處理抗生素廢水的研究[J];化學(xué)工程師;2012年06期

7 尹洪忠;兼氧-好氧法處理乙二醇生產(chǎn)廢水[J];金山油化纖;2003年04期

8 奚旦立,陳季華,劉振鴻;兼氧技術(shù)——有機(jī)廢水處理的新方法[J];中國(guó)紡織大學(xué)學(xué)報(bào);1997年04期

9 廖志民;;兼氧型MBR工藝“氣化除磷”效果研究[J];中國(guó)給水排水;2010年11期

10 李茵,奚旦立;兼氧-好氧工藝處理染料廢水的研究[J];環(huán)境科學(xué)研究;2003年02期

相關(guān)碩士學(xué)位論文 前4條

1 李先昕;兼氧微生物降解酚類化工廢水的研究[D];黑龍江大學(xué);2016年

2 吳勝之;兼氧FMBR處理印染廢水的實(shí)驗(yàn)研究及其機(jī)理分析[D];江西理工大學(xué);2016年

3 李再磊;兼氧—好氧染料廢水處理系統(tǒng)中酶活性的研究[D];東華大學(xué);2009年

4 胡姣姣;兼氧MBR處理養(yǎng)殖廢水工藝研究[D];江西理工大學(xué);2013年

，

本文編號(hào)：2025902