本文關(guān)鍵詞： 玄武巖纖維 填料 印染廢水 生物接觸氧化 鐵碳微電解　出處：《江蘇大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：隨著嚴(yán)格的環(huán)保政策以及針對性排放標(biāo)準(zhǔn)的實施,印染行業(yè)面臨的環(huán)保壓力加劇,急需高效穩(wěn)定的廢水處理工藝保障印染行業(yè)的可持續(xù)發(fā)展。本研究以綠色環(huán)保高性能玄武巖纖維為基材,開發(fā)新型生物填料,包括填料的結(jié)構(gòu)形式和制備工藝方法,并試驗研究了新型生物填料的基礎(chǔ)性能；基于該新型生物填料構(gòu)建生物接觸氧化工藝,試驗研究了相關(guān)工藝參數(shù)對印染廢水降解效果；根據(jù)實際印染廢水處理排放指標(biāo)要求,建立了微電解—接觸氧化組合工藝,試驗研究了組合工藝對印染廢水的降解效果。研究結(jié)論如下：(1)將活化處理后的玄武巖纖維絲通過手工扭動夾入對折的兩股單芯電纜線中心繩子的中間,通過扭轉(zhuǎn)電纜線的力度將玄武巖纖維束固定成螺旋式的結(jié)構(gòu)形式,通過裁剪、綁縛固定在填料支架上,形成固定填料床,便于形成可提式體化的填料�；谠摾w維填料構(gòu)建接觸氧化工藝,對印染廢水進行了試驗。在該試驗中,考察了螺旋式玄武巖纖維填料的掛膜速度以及在低水溫條件下水力停留時間和進水pH對印染廢水中色度、COD去除率的影響。在HRT=34h, COD去除率未超過70%；HRT=39 h, COD去除率可穩(wěn)定在85%以上；系統(tǒng)的最佳pH適應(yīng)范圍是7-7.5,此時,COD的去除率最高可達(dá)89.5%；基于螺旋式玄武巖纖維填料的接觸氧化工藝對印染廢水中的色度去除效果比較差,色度去除率始終未超過50%。(2)將活化處理后的玄武巖纖維束制作成玄武巖纖維束組片,間隔布置在中心鋼絲繩索上,制作成具有層疊式結(jié)構(gòu)的玄武巖纖維掛膜填料。在氧傳質(zhì)試驗中考察了曝氣量和填料填充比對其的影響,結(jié)果表明：受填料填充比的影響是：彈性填料玄武巖纖維填料組合填料；含玄武巖纖維填料的接觸氧化池,與無填料相比,氧傳質(zhì)系數(shù)最大增加了137%,僅次于彈性填料的150%,優(yōu)于組合填料的122%,氧傳質(zhì)效率較高。層疊式玄武巖纖維填料掛膜啟動速度快；掛膜量高,成膜重量在90～150 kg/m3;生物相比較豐富。(3)針對印染廢水水質(zhì)特點,構(gòu)建了基于層疊式玄武巖纖維填料的接觸氧化工藝為核心處理單元、鐵碳微電解為預(yù)處理的組合工藝,并對各個處理單元的運行工藝參數(shù)進行了研究。結(jié)果表明：鐵碳微電解的最佳運行工藝參數(shù)為微氧曝氣、進水pH為4.5,反應(yīng)時間為1 h;而接觸氧化工藝的最佳運行參數(shù)為水利停留時間為12 h,進水pH為7.5,DO為2-3 mg/L。(4)在最佳單元工藝參數(shù)的條件下,進行了鐵碳微電解—層疊式玄武巖纖維接觸氧化工藝的動態(tài)運行。運行結(jié)果表示：各處理單元對印染廢水的COD、色度、氨氮等指標(biāo)的去除率穩(wěn)定,組合工藝出水符合《紡織染整工業(yè)水污染排放標(biāo)準(zhǔn)(GB4287-2012)》表1中污染物的排放限值要求�？傊�,基于新型生物填料的微電解—接觸氧化組合工藝對實際印染廢水的處理效率不僅高而且穩(wěn)定,同時,在處理印染廢水方面具有積極的推廣意義。
[Abstract]:With the implementation of strict environmental protection policies and targeted emission standards, the pressure on the printing and dyeing industry to protect the environment has intensified. It is urgent to ensure the sustainable development of printing and dyeing industry by efficient and stable wastewater treatment process. In this study, a new type of biological filler, including its structure and preparation process, was developed based on green environmental protection and high performance basalt fiber. The basic properties of the new biofilm were studied, the biological contact oxidation process based on the new biofilm was constructed, the degradation effect of the related process parameters to the printing and dyeing wastewater was studied, and according to the actual discharge requirements of printing and dyeing wastewater treatment, The combined process of micro-electrolysis and contact oxidation was established. The effect of the combined process on the degradation of printing and dyeing wastewater was studied. The conclusions are as follows: 1) the activated basalt fiber wire is twisted manually into the middle of the central rope of the twisting single core cable. The basalt fiber bundle is fixed into a spiral structure by twisting the power of the cable, and the fixed packed bed is formed by cutting and binding to the packing support. It is convenient to form removable bulk packing. Based on the contact oxidation process of the fiber filler, the printing and dyeing wastewater is tested. The effects of the membrane forming rate of helical basalt fiber filler, hydraulic retention time and influent pH at low water temperature on the removal rate of chromaticity COD in printing and dyeing wastewater were investigated. The removal rate of COD was less than 70% and the removal rate of COD was more than 85% at 34h. The optimum pH range of the system is 7-7.5, and the removal rate of COD can reach 89.5.The contact oxidation process based on helical basalt fiber filler has a poor effect on color removal in printing and dyeing wastewater. The chromaticity removal rate is not more than 50%. (2) the activated basalt fiber bundle is made into a basalt fiber bundle set, which is arranged at intervals on the central wire rope. The effect of aeration rate and filling ratio on basalt fiber film packing with stacked structure was investigated in the oxygen mass transfer test. The results show that the effect of packing ratio is as follows: elastic packing basalt fiber packing combination filler, contact oxidation tank containing basalt fiber filler, compared with no packing, The oxygen mass transfer coefficient increased by 137%, second only to the elastic packing (150%), which is better than the composite packing (122%), and the oxygen mass transfer efficiency is higher. According to the water quality characteristics of printing and dyeing wastewater, the contact oxidation process based on stacked basalt fiber filler was established as the core treatment unit, and the iron and carbon microelectrolysis was used as the pretreatment process. The operation parameters of each treatment unit are studied. The results show that the optimum operation parameters of iron-carbon microelectrolysis are micro-oxygen aeration. The optimum operating parameters of contact oxidation process are water conservancy residence time (12 h) and influent pH value (7.5 mg / L 路L ~ (4))) under the optimum conditions of unit process parameters, the pH of influent is 4.5, the reaction time is 1 h, and the optimum operating parameters of contact oxidation process are as follows: water conservancy residence time is 12 hours, influent pH value is 7.5? The dynamic operation of iron-carbon micro-electrolysis and cascaded basalt fiber contact oxidation process was carried out. The results showed that the removal rate of COD, chromaticity and ammonia nitrogen of printing and dyeing wastewater by each treatment unit was stable. The effluent from the combined process meets the emission limit requirements of pollutants in Table 1 of the Water pollution discharge Standard for Textile dyeing and finishing Industry GB4287-2012. The combination process of micro-electrolysis and contact oxidation based on new biological filler is not only high and stable in the treatment of printing and dyeing wastewater, but also has a positive promotion significance in the treatment of printing and dyeing wastewater.
【學(xué)位授予單位】：江蘇大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：X791

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本文編號：1519351