【正文】 ABSTRACT Abstract: containing mineral processing reagents, various harmful suspended matter, metal ions concentration in the waste water, if the direct emissions, will cause serious pollution to the environment. Therefore, ore dressing wastewater treatment is an indispensable link in the mineral processing industry. Methods in this experiment, polyaluminum chloride and polyacrylamide coagulants used for processing experimental study on Chengde Shuangluan district a mineral processing wastewater. Using single factor analysis method to determine the optimal range of each factor, according to orthogonal experiment to determine the nonionic polyacrylamide dosage , polymerization aluminum chloride dosage 22mL, settling time 5min, pH value , can make the treatment of sewage transmission ratio reaches %. Analysis showed that water quality, better effluent quality polyaluminium chloride and nonionic polyacrylamide bined use than single use of polyaluminium chloride water quality, achieve industrial discharge and reuse requirements. KEY WORDS: beneficiation wastewater single factor orthogonal test coagulant 克拉瑪依職業(yè)技術學院畢業(yè)設計（論文） 第 3 頁 共 36 頁 目錄 1 前言 .......................................................................................................................................... 5 選礦廢水 的特點及危害 ...................................................................................................... 5 選礦廢水的處理方法 ......................................................................................................... 5 混凝沉淀法 ............................................................................................................ 5 酸堿廢水中和處理法 .............................................................................................. 7 化學氧化法 ............................................................................................................. 8 人工濕地法 ............................................................................................................ 9 吸附法 ................................................................................................................. 10 課題研究的意義及內容 .................................................................................................... 11 2 實驗部分 .................................................................................................................................. 12 選礦廢水 ......................................................................................................................... 12 實驗儀器 ......................................................................................................................... 12 實驗試劑 ......................................................................................................................... 12 實驗原理 ......................................................................................................................... 12 聚合氯化鋁（ PAC）沉降原理 ............................................................................... 12 聚丙烯酰胺（ PAM）沉降原理 ............................................................................... 13 試驗內容 ......................................................................................................................... 13 試驗方法 ......................................................................................................................... 13 配制試劑 ............................................................................................................. 13 濁度測定實驗試劑配制 .............................................................................. 13 絮凝沉降實驗試劑配制 .............................................................................. 15 實驗步驟 ............................................................................................................. 15 自然沉降法 .................................................................................................. 15 絮凝沉降法 ............................................................................................... 15 3 實驗結果與討論 ....................................................................................................................... 16 自然沉降與混凝沉降法處理污水的考察 ........................................................................... 16 聚丙烯酰胺和聚合氯化鋁聯(lián)合使用的混凝沉降法對選礦廢水的處理研究 .......................... 16 單因素考察方法 ................................................................................................... 17 聚合氯化鋁 (PAC)對加量對透射比和出水率的影響 ........................................ 17 聚丙烯酰胺加量對透射比和出水率的影響 .................................................... 17 沉降時間對透射比和出水率的影響 ............................................................... 18 pH 值對透射比和出水率的影響 ................................................................. 19 正交設計實驗 ..................................................................................................... 19 直觀分析法 ................................................................................................. 21 方差分析法 .............................................................................................. 24 4 結論 ........................................................................................................................................ 31 參考文獻 .............................................................................................................................. 32 致 謝 ................................................................................................................................ 34 克拉瑪依職業(yè)技術學院畢業(yè)設計（論文） 第 4 頁 共 36 頁 克拉瑪依職業(yè)技術學院畢業(yè)設計（論文） 第 5 頁 共 36 頁 混凝沉淀法對選礦廢水處理的實驗研究 1 前言 礦山是我國資源的重要來源地，在開采過程中需要大量的生產(chǎn)用水，同時也排放出大量廢水，選礦廢水是其重要的組成部分 。因此， 選礦廢水處理 是選礦工業(yè)中不可缺少的環(huán)節(jié) 。 本實驗以聚合氯化鋁與聚丙烯酰胺混凝劑聯(lián)合使用的方法對廢水進行處理實驗研究 。 據(jù)估計，我國礦山的選礦廠，每年排放的廢水約占全國工業(yè)廢水總量的十分之一，是我國工業(yè)廢水排放量最多的行業(yè)之一 。 我國的人口占世界總人口的五分之一，而耕地面積人平均不到 1