本文選題：水體富營養(yǎng)化 + 低污染水��； 參考：《長安大學(xué)》2015年碩士論文

【摘要】：近年來隨著社會經(jīng)濟的飛速發(fā)展和人口的迅速增長,大量經(jīng)過處理的生活污水、工業(yè)廢水以及農(nóng)業(yè)污水等低污染水進入地表水體,導(dǎo)致地表水體富營養(yǎng)化,影響水體功能與自然生態(tài)環(huán)境。碳纖維作為一種新型的環(huán)境材料,在水處理領(lǐng)域逐漸受到重視。本論文針對目前我國低污染水現(xiàn)狀,對碳纖維材料在水處理中的應(yīng)用進行研究,主要研究了新型碳纖維材料為填料的人工濕地處理單元對人工模擬低污染水和污水廠尾水的凈化效果,研究了溫度、pH、水力停留時間、填料投放量四個因素對污染物去除效果的影響,并研究了污水處理過程中碳纖維填料生物膜的形成過程,此外對碳纖維等四種材料的特性進行了初步的分析比較。主要結(jié)論如下:(1)對比研究了碳纖維、生物繩、超細纖維立體人工水草及立體彈性填料四種填料的掛膜情況及污染物的去除特性。實驗結(jié)果表明,碳纖維填料掛膜速度最快、生物相最豐富,對水中污染物的去除效果最好,總氮去除率達到56.2%、氨氮去除率達到92.1%、CODMn去除率達到98.8%。(2)通過實驗室模擬研究碳纖維為填料的人工濕地對低污染水的脫氮效果�？疾炝藴囟取⑺νＡ魰r間、pH和填料投放量對水質(zhì)凈化效果的影響,結(jié)果表明,當(dāng)溫度為25~30℃、進水pH為7.5~8.0、水力停留時間為8h、碳纖維投放量為500g/m3時,此時人工濕地處理單元對模擬污水的總氮、氨氮、CODMn的去除效果最好,去除率分別達到了54%、84%、90%,處理效果穩(wěn)定。(3)研究了最優(yōu)參數(shù)下水質(zhì)凈化效果及對污水廠尾水的實際處理效果。處理低污染水原水時,發(fā)現(xiàn)C/N(COD/TN)對低污染水處理效果有一定的影響,當(dāng)?shù)臀廴舅袪I養(yǎng)物C/N由0.7~1提高到5后,污染物的去除效果增加,總氮、氨氮和CODMn去除率分別由原來的19%、24%、39%增加到50%、76%、83%。
[Abstract]:In recent years, with the rapid development of social economy and the rapid growth of population, a large number of treated domestic sewage, industrial wastewater and agricultural sewage and other low-pollution water into the surface water body, resulting in eutrophication of surface water. Affect water function and natural ecological environment. As a new environmental material, carbon fiber has been paid more and more attention in the field of water treatment. According to the current situation of low pollution water in China, the application of carbon fiber material in water treatment is studied in this paper. This paper mainly studied the purification effect of artificial wetland treatment unit with new carbon fiber material as filler to artificially simulate low pollution water and waste water of sewage treatment plant, studied temperature and pH value, hydraulic retention time, The effects of four factors on the removal efficiency of pollutants were studied. The formation process of carbon fiber filler biofilm in wastewater treatment process was studied. In addition, the characteristics of four kinds of materials, such as carbon fiber, were preliminarily analyzed and compared. The main conclusions are as follows: (1) the film suspension and pollutant removal characteristics of carbon fiber, biological rope, ultrafine fiber stereoscopic artificial water grass and stereoscopic elastic packing were studied. The experimental results show that carbon fiber packing is the fastest and the most abundant in biologic phase, and the removal efficiency of pollutants in water is the best. The removal rate of total nitrogen and ammonia reached 56.2 and 92.1% respectively. The denitrification effect of carbon fiber filled constructed wetland on low pollution water was studied by laboratory simulation. The effects of temperature, HRT, pH and the amount of filler on water quality purification were investigated. The results showed that when the temperature was 2530 鈩，

本文編號：1805824