磁混凝沉淀技术处理微污染水体研究
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摘要
采用磁混凝沉淀技术处理微污染河道水,考察了磁粉种类与用量、絮凝剂用量、投药顺序、静沉时间等因素对磁混凝沉淀技术处理效果的影响。结果表明:磁粉种类和药剂投加顺序对微污染水中各污染物的去除效果不同, 4#磁粉表现出较优异的综合性能,磁粉+PAC+PAM的投加方式对污水处理效果最佳。应用磁混凝沉淀技术处理微污染河道水,提高了对污水中SS、 TP、 COD的去除效果,当磁粉投加量为100 mg/L, PAC投加量为60 mg/L, PAM投加量为1.0 mg/L时, SS、 TP、 COD的去除率分别可达到94.6%、 84.9%和40.7%。采用该技术能有效缩短絮凝与沉降时间,且更易于实现固液磁分离。
Using magnetic coagulation process to treat micro-polluted river water, the influence of kinds and dosage of magnetic powder, coagulant dosage, order of drug dosing, sedimentation time and some other factors on the treatment effect were investigated. The results of the test showed that, kinds of magnetic powders and order of drug dosing affected the removal efficiency of various pollutants in micro-polluted water. The 4# magnetic powder showed outstanding combination property, and the optimal dosing mode of drug was magnetic powder + PAC + PAM. Using magnetic coagulation process to treat micro-polluted river water, the removal rates of SS, TP and COD were improved, when the dosage of magnetic powder, PAC and PAM were 100, 60, 1.0 mg/L respectively, the removal rates of them reached 94.6%, 84.95 and 40.7% respectively. It could be seen that, the said process could effectively shorten flocculation and sedimentation time, which could easily realize solid-liquid magnetic separation.
Using magnetic coagulation process to treat micro-polluted river water, the influence of kinds and dosage of magnetic powder, coagulant dosage, order of drug dosing, sedimentation time and some other factors on the treatment effect were investigated. The results of the test showed that, kinds of magnetic powders and order of drug dosing affected the removal efficiency of various pollutants in micro-polluted water. The 4# magnetic powder showed outstanding combination property, and the optimal dosing mode of drug was magnetic powder + PAC + PAM. Using magnetic coagulation process to treat micro-polluted river water, the removal rates of SS, TP and COD were improved, when the dosage of magnetic powder, PAC and PAM were 100, 60, 1.0 mg/L respectively, the removal rates of them reached 94.6%, 84.95 and 40.7% respectively. It could be seen that, the said process could effectively shorten flocculation and sedimentation time, which could easily realize solid-liquid magnetic separation.
引文
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[3]李继香.应用加载磁混凝处理微污染河水[J].环境工程学报,2014, 8(7):2901-2905.
[4]周建忠,靳云辉,罗本福,等.超磁分离水体净化技术在北小河污水处理厂的应用[J].中国给水排水, 2012, 28(6):78-81.
[5]杨茹霞,孙慧芳,李剑锋,等.混凝技术在焦化废水深度处理中的应用[J].工业用水与废水, 2018, 49(2):6-10.
[6]蒋海,安琳,欧芳.磁混凝沉淀技术在城市污水处理中的应用[J].市政技术, 2012, 30(1):108-113.
[7]邓大鹏,董惠芳,李大功,等.磁分离技术的工程应用实践[J].中国给水排水, 2011, 27(18):83-86.
[8]韩虹,陈文松,韦朝海.印染废水处理的磁混凝-高梯度磁分离协同作用[J].环境工程学报, 2007, 1(1):64-67.
[9]康小红,杨云龙.磁絮凝去除工业废水中铜离子的试验研究[J].工业用水与废水, 2011, 42(3):24-27.
[10]郑俊,方兵,鲁浩.磁加载强化活性污泥法处理垃圾渗滤液的研究[J].中国给水排水, 2014, 30(11):100-103.
[11]陈宇,张明,王周,等.纳米磁粉复配混凝剂深度处理木薯酒精废水研究[J].环境工程, 2017, 35(5):11-15.
[12]黑国翔. Co Mag磁混凝工艺在一级A提标改造中的应用[J].中国给水排水, 2011, 27(22):97-99.
[13]李峰.加载磁絮凝技术处理微污染原水的试验研究[D].太原:太原理工大学, 2012.
[14]王东升,张明,肖峰.磁混凝在水与废水处理领域的应用[J].环境工程学报, 2012, 6(3):705-713.
[15] YAO T J, CUI T Y, FANG X, et al. Preparation of yolk/shellFe3O4@polypyrrole composites and their applications as catalystsupports[J]. Journal of Chemical Engineering, 2013, 225:230-236.
[16]胡家玮,李军,陈瑜,等.磁絮凝在强化处理受污染河水中的应用[J].中国给水排水, 2011, 27(15):75-81.
[17]张朝升,张可方,宋金璞,等.大梯度磁滤器处理微污染珠江源水[J].中国给水排水, 2001, 17(4):70-72.
[18]阳旭,甘树,闻圣,等.高浊度原水磁加载混凝应急饮用水处理实验研究[J].水处理技术, 2017, 43(9):104-108.
[19]黄自力,肖晶晶,李密.化学沉淀-磁絮凝深度快速除磷的研究[J].武汉科技大学学报(自然科学版), 2009, 32(1):102-105.