本文關(guān)鍵詞： 微波 敏化劑 過氧化氫 剩余污泥 預(yù)處理　出處：《環(huán)境科學(xué)學(xué)報(bào)》2017年12期 　論文類型：期刊論文

【摘要】：提高污泥溶胞效率是強(qiáng)化污泥厭氧處理的關(guān)鍵.為加強(qiáng)污泥微波預(yù)處理溶胞效果,本研究分別考察了常壓、半封閉條件下二氧化鈦顆粒、碳質(zhì)材料作為敏化劑與過氧化氫聯(lián)合進(jìn)行微波污泥預(yù)處理的效果.結(jié)果表明,碳質(zhì)材料敏化劑對(duì)微波、過氧化氫-微波污泥預(yù)處理產(chǎn)生了負(fù)作用,降低了污泥的溶胞效果,而二氧化鈦能有效增加污泥中營養(yǎng)物質(zhì)的釋放.當(dāng)二氧化鈦顆粒投加量為0.12 g·g~(-1)干污泥時(shí),SCOD、PO_4~(3-)-P的濃度比單獨(dú)微波處理分別增加了11.86%、61%;當(dāng)二氧化鈦顆粒投加量為0.24 g·g~(-1)干污泥時(shí),NH_4~+-N釋放比單獨(dú)微波處理高出27.78%.微波輻射作用下投加二氧化鈦顆粒產(chǎn)生了羥基自由基,強(qiáng)化了過氧化氫-微波對(duì)污泥細(xì)胞的氧化作用.
[Abstract]:In order to enhance the effect of microwave pretreatment of sludge, the titanium dioxide particles under atmospheric pressure and semi-closed conditions were investigated. The results showed that carbonaceous material sensitizer had a negative effect on microwave and hydrogen peroxide pretreatment of sludge, which reduced the cell solubility of sludge. Titanium dioxide can effectively increase the release of nutrients from sludge. When the amount of TIO _ 2 particles is 0.12 g 路g / g ~ (-1)) dry sludge, the concentration of SCODO _ (4) O _ (3) -P increases 11.86% and 0.24 g 路g / g ~ (-1), respectively, compared with microwave treatment alone (0.24 g 路g ~ (-1)). The release of NH4 ~ -N was 27.78% higher than that of microwave alone. The hydroxyl radical was produced by adding titanium dioxide particles under microwave irradiation. The oxidation of sludge cells by hydrogen peroxide and microwave was enhanced.
【作者單位】： 中國科學(xué)院生態(tài)環(huán)境研究中心水污染控制實(shí)驗(yàn)室;中國礦業(yè)大學(xué)(北京);
【基金】：國家水體污染控制與治理科技重大專項(xiàng)(No.2012ZX07202-005) 國家自然科學(xué)基金(No.51008297)~~
【分類號(hào)】：X703
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本文編號(hào)：1511374