本文選題：就地截污 + 生物接觸氧化　； 參考：《寧波大學(xué)》2015年碩士論文

【摘要】：針對(duì)排污口進(jìn)行就地截污是在不能進(jìn)行管道截污的地區(qū)實(shí)現(xiàn)截污的可能方式,但河道現(xiàn)場就地截污尚沒有成熟的技術(shù)方法。本文試圖采用水解酸化-生物接觸氧化工藝及水生植物進(jìn)行污水就地處理從而實(shí)現(xiàn)排污口現(xiàn)場截污,并檢驗(yàn)該工藝及裝置在實(shí)際應(yīng)用中的可行性,以期為河道就地截污處理相關(guān)工藝選擇與運(yùn)行條件優(yōu)化提供參考依據(jù)。主要研究內(nèi)容和結(jié)論如下:1.水解酸化-二段生物接觸氧化-水生植物截污試驗(yàn)研究。研究了水力停留時(shí)間(HRT)、容積負(fù)荷、水生植物(鳳眼蓮)等對(duì)生活污水截污效果的影響。結(jié)果表明,當(dāng)HRT為6 h時(shí),水解酸化-二段生物接觸氧化對(duì)CODCr、NH4+-N和TP的平均去除率分別為77.6%、60.52%、53.37%;CODCr、NH4+-N和TP的最佳容積負(fù)荷率分別為216、11.57及1.52 g/(m3?h);加入鳳眼蓮后(HRT=4 h),NH4+-N、TP去除率可分別達(dá)81.39%及53.78%,比未加植物前分別提高28.94%及10%,出水水質(zhì)達(dá)到GB 18918-2002一級(jí)B排放標(biāo)準(zhǔn)。2.水解酸化-二段生物接觸氧化-水生植物截污工藝微生物群落研究。通過高通量測序分析,發(fā)現(xiàn)本試驗(yàn)條件下的彈性填料上生物膜的微生物主要包括α-變形菌綱、β-變形菌綱、γ-變形菌綱、e-變形菌綱、ε-變形菌綱、厚壁菌門、酸桿菌門和綠菌門,平均相對(duì)豐度分別為16.45%、27.92%、6.35%、12.12%、3.15%、12.74%、7.5%和4.92%,占細(xì)菌總數(shù)的91.16%;對(duì)造成群落差異的三組主要OTUs進(jìn)行豐度比較,發(fā)現(xiàn)假單胞菌、黏細(xì)菌等好氧細(xì)菌主要存在于溶解氧充沛的B段接觸氧化池內(nèi);而擬桿菌、韋榮氏球菌、多形桿狀菌等厭氧細(xì)菌,主要存在于水解酸化段,少量存活于A段接觸氧化池。說明生物膜細(xì)菌群落組成與水體中的溶解氧濃度有直接關(guān)系。3.曝氣-鳳眼蓮協(xié)同修復(fù)黑臭水體試驗(yàn)研究。比較研究了曝氣和非曝氣條件下鳳眼蓮生長及對(duì)有機(jī)物去除的效果,發(fā)現(xiàn)在溫度25~30℃條件下,運(yùn)行21 d時(shí),曝氣反應(yīng)池中鳳眼蓮總生物量增加1.7 kg/m2,平均生物量增長率為82 g/(m2?d),是缺氧池的4.3倍;曝氣池內(nèi)CODCr、NH4+-N、TP去除率分別為89.7%、81.1%及53.62%,分別是缺氧池的2.8、4.0、1.9倍。4.浮動(dòng)式河道現(xiàn)場截污工藝及裝置在實(shí)際應(yīng)用中的可行性研究。根據(jù)以上工藝,設(shè)計(jì)制作了一種浮動(dòng)式河道現(xiàn)場截污裝置并進(jìn)行了現(xiàn)場試驗(yàn)。在裝置外圍連接一圈DN 160的PVC管,并在進(jìn)水端連接一層塑料泡沫,可使裝置浮在水面不下沉且能順利出水。并在冬季低溫的條件下,CODCr、NH4+-N、TP仍分別能保持基于接觸氧化與水生植物協(xié)同作用的城市內(nèi)河就地截污裝置研究68.9%、52.3%、47.77%的去除率,CODCr、NH4+-N的出水水質(zhì)均可達(dá)到GB18918-2002二級(jí)排放標(biāo)準(zhǔn),說明水解酸化-生物接觸氧化-水生植物法組合工藝截污方法可行。
[Abstract]:It is a possible way to carry out local sewage interception in the areas where the pipeline can not be carried out, but there is still no mature technical method in the field of river channels.This paper attempts to use hydrolytic acidification-biological contact oxidation process and aquatic plants to treat sewage in situ so as to realize on-site sewage interception at the sewage outlet, and to test the feasibility of the process and the device in practical application.In order to provide a reference for the selection of relevant processes and optimization of operation conditions for local sewage treatment of river channels.The main contents and conclusions are as follows: 1.Hydrolytic acidification-two-stage biological contact oxidation-pollution interception by aquatic plants.The effects of HRT, volumetric loading and aquatic plants (Echinocephala hyacinth) on the sewage interception were studied.The results show that when HRT is 6 h,The average removal rates of NH4-N and TP by hydrolytic acidification-two-stage biological contact oxidation were 77.660.52 and 53.37, respectively, and the optimum volumetric loading rates of NH4-N and TP were 2160.57 and 1.52 g / m ~ 3hU, respectively. The removal rates of NH _ 4-N and NH _ 4-N ~ + were 81.39% and 53.78%, respectively, after adding hyacinth.The effluent quality reached GB 18918-2002 grade B discharge standard .2.The effluent quality was increased by 28.94% and 10% respectively.Study on microbial Community by Hydrolysis acidification-two-stage Biological contact Oxidation-Aquatic Plant pollution interception process.By high-throughput sequencing analysis, it was found that the biofilms on elastic fillers in this experiment were mainly composed of 偽 -Proteus, 尾 -Proteus, 緯 -Proteus, 蔚 -Proteus, Acidobacterium and Chlorophyta.The average relative abundance was 16.455.27.926.350.12.120.3.15% and 4.92%, respectively, which accounted for 91.16.The results showed that Pseudomonas, myxobacteria and other aerobic bacteria mainly existed in the B section contact oxidation tank with abundant dissolved oxygen.The anaerobic bacteria, such as Bacteroides viride, Veron's coccus and polymorphic rod bacteria, mainly existed in hydrolytic acidification stage, and a few survived in A stage contact oxidation tank.The results showed that the composition of biofilm bacterial community was directly related to dissolved oxygen concentration in water.Experimental study on synergistic restoration of black and smelly water by aeration and hyacinth.The growth and removal effect of hyacinth under aeration and non-aeration conditions were studied. It was found that under the condition of 2530 鈩，

本文編號(hào)：1749506