本文選題：臭氧 + 村鎮(zhèn)�。� 參考：《環(huán)境科學(xué)學(xué)報(bào)》2017年02期

【摘要】：村鎮(zhèn)垃圾中轉(zhuǎn)站滲濾液具有量小、分散、污染性強(qiáng)等特點(diǎn).為控制其有機(jī)污染,本研究采用操作靈活、高效的臭氧法處理該滲濾液,考察了反應(yīng)時(shí)間、臭氧投量、初始pH值、反應(yīng)溫度、雙氧水投量對(duì)滲濾液中有機(jī)污染物降解的影響.結(jié)果表明:當(dāng)反應(yīng)時(shí)間為20 min、臭氧投量為1.24g·h-1、初始pH值為7.00、反應(yīng)溫度為25℃時(shí),滲濾液色度(CN)和CODCr的去除率分別達(dá)83.57%、61.53%;在上述條件下,額外向反應(yīng)體系中投入1 m L·L-1雙氧水后,其色度、CODCr去除率分別提高了4.88%、14.23%.由于村鎮(zhèn)滲濾液中大分子有機(jī)物的降解,反應(yīng)60 min后BOD5/CODCr值從0.24提高到0.56,且由于礦化作用,HCO-3濃度增加了1297.89 mg·L-1.此外,紫外-可見光譜顯示,臭氧能明顯降低滲濾液的芳香性程度和腐殖化程度;三維熒光光譜表明,臭氧能快速氧化滲濾液中結(jié)構(gòu)較為穩(wěn)定的類富里酸,極大程度地降低滲濾液中有機(jī)污染物的分子縮合度和分子量.經(jīng)估算,反應(yīng)過程中藥劑成本約7.37元·m~(-3).
[Abstract]:The leachate of village refuse transfer station has the characteristics of small quantity, dispersion and strong pollution. In order to control the organic pollution of the leachate, a flexible and efficient ozone method was used to treat the leachate. The effects of reaction time, ozone dosage, initial pH value, reaction temperature and hydrogen peroxide dosage on the degradation of organic pollutants in the leachate were investigated. The results showed that when the reaction time was 20 min, the ozone dosage was 1.24 g h-1, the initial pH value was 7.00 and the reaction temperature was 25 鈩，

本文編號(hào)：1924976