本文關(guān)鍵詞：強(qiáng)化厭氧生物處理技術(shù)在印染廢水深度處理中的應(yīng)用　出處：《蘇州科技學(xué)院》2015年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 印染廢水 三級(jí)厭氧處理 Fenton氧化

【摘要】：印染廢水具有高COD、高色度、可生化性差、成分復(fù)雜等特點(diǎn),是較難處理的工業(yè)廢水。由于印染廢水的排放對(duì)環(huán)境造成了極大的破壞,嚴(yán)重制約了經(jīng)濟(jì)的可持續(xù)發(fā)展,因此對(duì)印染廢水的有效處理成為環(huán)境領(lǐng)域的重要研究課題。本論文采用三級(jí)厭氧柱法處理印染廢水,研究柱填料、水力停留時(shí)間、容積負(fù)荷、上升流速、溫度、pH等因素對(duì)厭氧柱處理印染廢水效果的影響,確定最佳工藝參數(shù)。并且在最佳工藝參數(shù)下通過研究厭氧柱中添加Ca2+、PAM、活性炭,以改變厭氧污泥載體結(jié)構(gòu),進(jìn)一步提高厭氧柱的處理性能,強(qiáng)化印染廢水的處理效果。印染廢水經(jīng)三級(jí)厭氧柱處理后最終采用Fenton氧化深度處理技術(shù),使出水水質(zhì)得到進(jìn)一步提升,經(jīng)過研究表明:通過比較三種不同填料對(duì)COD的去除效果,結(jié)果表明:陶粒的效果最好,其次是Al2O3,沸石摻雜鋼渣的效果最差;實(shí)驗(yàn)確定最佳水力停留時(shí)間為16h,此時(shí)B/C比達(dá)到最大;控制水力停留時(shí)間為16h,容積負(fù)荷2.127 kgCOD·m-3·d~(-1),三級(jí)厭氧柱COD總?cè)コ驶颈３?4%-78%之間;負(fù)荷提升階段,最初十天VFA濃度變化較大,之后VFA逐漸趨于穩(wěn)定,表明產(chǎn)甲烷菌生長繁殖較好,沒有產(chǎn)生VFA積累使得厭氧柱酸化的現(xiàn)象。強(qiáng)化厭氧柱階段,厭氧柱2添加Ca2+為280 mg·L~(-1)時(shí)COD去除率較高,表明添加Ca2+有利于對(duì)COD去除;厭氧柱3選擇添加桃殼、煤質(zhì)或椰殼三種活性炭,結(jié)果表明添加煤質(zhì)活性炭效果最好,最佳投加量為350 mg·L~(-1);采用Fenton氧化深度處理,當(dāng)H2O2、FeSO4投量為450mg·L~(-1)時(shí),COD從286mg·L~(-1)降低到55mg·L~(-1),色度從150倍降低到85倍;原水經(jīng)強(qiáng)化厭氧柱1、2、3厭氧處理,再經(jīng)Fenton法處理,B/C比從0.22提高到0.43。
[Abstract]:Printing and dyeing wastewater has the characteristics of high COD, high chroma, poor biodegradability, complex composition and so on. It is difficult to treat the industrial wastewater. The discharge of printing and dyeing wastewater has caused great damage to the environment. The sustainable development of economy is seriously restricted, so the effective treatment of printing and dyeing wastewater has become an important research topic in the field of environment. In this paper, the three-stage anaerobic column method is used to treat printing and dyeing wastewater, and the column packing is studied. Effects of hydraulic retention time, volumetric loading, rising flow rate, temperature and pH on the treatment of dyeing wastewater by anaerobic column. In order to change the structure of anaerobic sludge carrier and further improve the treatment performance of anaerobic column by adding Ca2 pam and activated carbon to the anaerobic column under the optimum process parameters. The treatment effect of printing and dyeing wastewater was strengthened. After three-stage anaerobic column treatment, the advanced treatment technology of Fenton oxidation was adopted to further improve the effluent quality. The results showed that the removal efficiency of COD was the best for ceramsite, followed by Al _ 2O _ 3, and the effect of zeolite doped steel slag was the worst. The best HRT was 16 h, and the ratio of B / C reached the maximum. The total removal rate of COD in the three-stage anaerobic column was between 74% and 78% when the hydraulic retention time was 16 hours and the volumetric load was 2.127 kgCOD 路m -3 路d ~ (-1). In the load lifting stage, the concentration of VFA changed greatly in the first ten days, then the VFA tended to stabilize gradually, indicating that methanogenic bacteria grow and reproduce well. No accumulation of VFA resulted in acidification of anaerobic column. In the phase of enhanced anaerobic column, the removal rate of COD was higher when the addition of Ca2 to anaerobic column 2 was 280mg 路L ~ (-1). The results show that the addition of Ca2 is beneficial to the removal of COD. Three kinds of activated carbon, peach shell, coal or coconut shell, were added to anaerobic column 3. The results showed that the best effect was added with coal activated carbon, and the optimum dosage was 350 mg 路L ~ (-1). When the dosage of H _ 2O _ 2 and FeSO _ 4 is 450 mg 路L ~ (-1) by Fenton oxidation advanced treatment. The COD decreased from 286 mg 路L ~ (-1) to 55 mg 路L ~ (-1) and the chromaticity decreased from 150 times to 85 times. The raw water was treated with the enhanced anaerobic column (1 / 2) and the ratio of B / P / C was increased from 0.22 to 0.43 by Fenton.
【學(xué)位授予單位】：蘇州科技學(xué)院
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：X791

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本文編號(hào)：1391177