本文關(guān)鍵詞： 再生水 大腸桿菌 浮選 遷移 吸附　出處：《工程科學(xué)學(xué)報(bào)》2017年05期 　論文類型：期刊論文

【摘要】：通過再生水模擬浮選試驗(yàn)和吸附、解吸附試驗(yàn)分析研究了城市再生水中大腸桿菌在浮選過程中的遷移規(guī)律.研究結(jié)果表明:再生水中大腸桿菌能夠快速被礦物顆粒吸附,尾礦廢水繼續(xù)回用于浮選流程是安全的,但精礦、中礦、尾礦中吸附了大量的大腸桿菌,在特定暴露水平下會(huì)對(duì)從業(yè)人員構(gòu)成健康風(fēng)險(xiǎn);礦物顆粒對(duì)大腸桿菌的吸附是影響再生水中大腸桿菌在浮選過程遷移的主要因素;隨著大腸桿菌濃度的升高,大腸桿菌衰減率、吸附速率隨之下降;礦物顆粒對(duì)大腸桿菌的吸附對(duì)pH變化敏感,隨著pH升高,礦物顆粒對(duì)大腸桿菌的吸附呈下降趨勢(shì),捕收劑煤油、Pj053和調(diào)整劑CaO的加入會(huì)明顯提高礦物顆粒對(duì)大腸桿菌的吸附.
[Abstract]:The migration of Escherichia coli in urban regenerated water during flotation was studied by simulated flotation and adsorption experiments. The results showed that Escherichia coli in regenerated water could be rapidly adsorbed by mineral particles. It is safe for tailings wastewater to be reused in flotation process, but a large amount of Escherichia coli is adsorbed in concentrate, middle ore and tailings, which will pose health risk to employees at specific exposure level. The adsorption of Escherichia coli by mineral particles is the main factor affecting the migration of Escherichia coli in regenerated water during flotation, and the decay rate and adsorption rate of Escherichia coli decrease with the increase of Escherichia coli concentration. The adsorption of mineral particles to Escherichia coli was sensitive to pH changes. With the increase of pH, the adsorption of Escherichia coli by mineral particles showed a downward trend. The addition of collector kerosene Pj053 and adjuster CaO could obviously increase the adsorption of mineral particles to Escherichia coli.
【作者單位】： 北京科技大學(xué)土木與資源工程學(xué)院;中國勞動(dòng)關(guān)系學(xué)院安全工程系;
【分類號(hào)】：TD923
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本文編號(hào)：1534786