本文關(guān)鍵詞： 生物處理 金礦廢水 氰化物 產(chǎn)堿桿菌　出處：《化工環(huán)�！�2017年01期 　論文類(lèi)型：期刊論文

【摘要】：采用產(chǎn)堿桿菌(Alcaligenes sp.)DN25去除金礦選礦廢水和礦渣浸出液中的氰�？疾炝司闐N25的除氰效果,研究了DN25生長(zhǎng)和降解活性的影響因素。實(shí)驗(yàn)結(jié)果表明:利用DN25處理選礦廢水,當(dāng)反應(yīng)時(shí)間為23 h時(shí),總氰質(zhì)量濃度分別從162.6,32.4,21.0,22.3 mg/L降至0,0.07,0,1.24 mg/L;利用DN25處理礦渣浸出液,當(dāng)反應(yīng)時(shí)間為25 h時(shí),總氰質(zhì)量濃度分別從4.4,8.8 mg/L降至0.37,0.38 mg/L;處理后兩種廢水的總氰質(zhì)量濃度均滿(mǎn)足GB 8978—1996《污水綜合排放標(biāo)準(zhǔn)》的要求;DN25可在初始總氰質(zhì)量濃度為10~30 mg/L且僅含碳源的條件下生長(zhǎng)但存在24 h停滯期,而在初始總氰質(zhì)量濃度為5~20 mg/L且含碳、氮源的條件下沒(méi)有生長(zhǎng)停滯期。
[Abstract]:Alcaligenes sp.)DN25 was used to remove cyanide from gold ore dressing wastewater and slag leachate. The cyanide removal effect of strain DN25 was investigated. The factors affecting the growth and degradation activity of DN25 were studied. The experimental results showed that the concentration of total cyanide was from 162.6 to 162.6 when the reaction time was 23 h when DN25 was used to treat mineral processing wastewater. 32.4mg / L of 21.0mg / L mg/L decreased to 0.0.07g / L; When the reaction time was 25 h, the total cyanide concentration decreased from 4.48.8 mg/L to 0.37 mg 路L ~ (-1) 路L ~ (-1), respectively. After treatment, the total cyanide concentration of the two kinds of wastewater meets the requirements of GB 8978-1996 Comprehensive Wastewater discharge Standard. DN25 could grow under the condition of initial total cyanide concentration of 1030 mg/L and carbon source only, but there existed 24 h stasis period. However, there was no growth stasis period under the initial total cyanide concentration of 5 ~ 20 mg/L, carbon and nitrogen source.
【作者單位】： 廣西大學(xué)化學(xué)化工學(xué)院;廣西生物煉制重點(diǎn)實(shí)驗(yàn)室;
【基金】：國(guó)家自然科學(xué)基金項(xiàng)目(51108098)
【分類(lèi)號(hào)】：X753
【正文快照】： 氰化物常用于金礦提金,產(chǎn)生的廢水中除了含有游離氰和絡(luò)合氰[1],還常有砷、鉛、鎘等有毒物質(zhì)[2]。據(jù)統(tǒng)計(jì),我國(guó)僅黃金生產(chǎn)企業(yè)所排放含氰廢水就達(dá)1.2×108 m3/a[3]。當(dāng)前金礦廢水中氰的去除方法主要有自然分解、化學(xué)處理、生物分解、電解氧化等方法[4-5]。相比于其他方法,生物，

本文編號(hào)：1486128