焦化废水回用的腐蚀控制
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摘要
根据焦化废水的污染物浓度及其水质特性,选择较为经济的处理方法——缺氧—好氧(A-O)法,结合混凝预处理方法,进行处理模拟试验。实验尽量模拟真实工业处理焦化废水的条件,焦化废水的COD_(Cr)为3920mg/L。混凝试验筛选出以PFS为絮凝剂,浓度为11.6mg/L,高岭土为助凝剂加入量为每100mL焦化废水加入0.05g,为最佳投入量。建立A-O法处理流程小型模拟系统,改变填料和温度等实验条件,得到最佳的处理效率为75.76%,出水的COD_(Cr)最低为约750mg/L。如果要对焦化废水进行回用,须对焦化废水进行稀释。稀释水为长江水和腾州深井地下水。进行废水回用于冷却循环水系统的实验。对冷却循环水系统的腐蚀、结垢和微生物三个主要问题研究解决方法。进行腐蚀挂片试验和缓蚀阻垢试验,确定了针对于回用焦化废水的较为有效的药剂和配方,筛选出SH0443H和SH0415ZH两个配方对回用的焦化废水的结垢和缓蚀的处理效果较好。进行微生物控制动态模拟试验,明确了废水回用于冷却循环水系统对系统的微生物的生长的影响。COD_(Cr)是85mg/L的回用废水不会造成循环水系统中微生物的大量生长致使出现生物粘泥。经过试验,得到稀释的焦化废水回用对冷却循环水系统产生的影响,初步可以确定焦化废水回用具有实际意义。
Abstract: According to the concentration of the pollution in the coke plant wastewater and its characteristic, choosing a practical wastewater treatment method -anaerobic-oxidizing (A-O)method, combining with the coagulant sedimentation, to do the mimic experiments. The experiments were close to the industrial conductions. The CODCr- of the coke plant wastewater before treatment was 3920mg/L. By the coagulant sedimentation ,the best adding concentration of PFS as the flocculating agent was 11.6mg/L.The adding concentration of kaoline as the coagulant aid was 0.5g/L .Building a mini mimic A-0 treating system and changing the fillers and temperature got the best efficiency. It was 75.76%. The minimum of CODcr was about 750mg/L. If the coke plant wastewater would be reuse to the cooling water system, the wastewater must be diluted by the clean water. There were two kinds of the clean water. They were the Changjing River water and the deep well subsurface water in Tengzhou. There are three important problems They are the corrosion , scaling and the biofouling. The methods to deal with the three problems would be found. The efficient pharmaceutical and the formula were found by the coupon test. The formulas SH0443H and SH0415ZH were better for the corrosion and scaling controlling in cooling water system. The influence of the microbe growing of the coke plant wastewater reused to the cooling water system was clear by microbe controlling experiment. The reusing wastewater which COD was 85mg/L could not make the microbe grow too fast to make the biofouling. By the series of experiments of treatment and reusing, the tentative results were got that the diluted coke plant wastewater reusing to the cooling water system has the actual meaning.
Abstract: According to the concentration of the pollution in the coke plant wastewater and its characteristic, choosing a practical wastewater treatment method -anaerobic-oxidizing (A-O)method, combining with the coagulant sedimentation, to do the mimic experiments. The experiments were close to the industrial conductions. The CODCr- of the coke plant wastewater before treatment was 3920mg/L. By the coagulant sedimentation ,the best adding concentration of PFS as the flocculating agent was 11.6mg/L.The adding concentration of kaoline as the coagulant aid was 0.5g/L .Building a mini mimic A-0 treating system and changing the fillers and temperature got the best efficiency. It was 75.76%. The minimum of CODcr was about 750mg/L. If the coke plant wastewater would be reuse to the cooling water system, the wastewater must be diluted by the clean water. There were two kinds of the clean water. They were the Changjing River water and the deep well subsurface water in Tengzhou. There are three important problems They are the corrosion , scaling and the biofouling. The methods to deal with the three problems would be found. The efficient pharmaceutical and the formula were found by the coupon test. The formulas SH0443H and SH0415ZH were better for the corrosion and scaling controlling in cooling water system. The influence of the microbe growing of the coke plant wastewater reused to the cooling water system was clear by microbe controlling experiment. The reusing wastewater which COD was 85mg/L could not make the microbe grow too fast to make the biofouling. By the series of experiments of treatment and reusing, the tentative results were got that the diluted coke plant wastewater reusing to the cooling water system has the actual meaning.
引文
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6 宫磊,徐晓军.焦化废水处理技术的新进展[J].工业水处理,2004,24(3):9～11,20
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10 李善仁.污水回用处理技术现状分析[J].上海环境科学,2002,21(1):24～27.
11 郭建辉.用生物脱氮工艺处理焦化废水[J].现代化工,2001,3:48～49.
12 项吴定.A~2/O生物处理工艺在焦化废水处理中的应用[J].环境保护,2002,1:10～13,26.
13 计中坚,孟祥荣,尹承龙.焦化污水的现代净化技术[J].现代化工,2002,1:43～48.
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16 李培红,张克峰,王永胜,等.工业废水处理与回收利用[M].北京:化学工业出版社,2001.4
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19 郑书忠.水处理药剂及其应用[M].北京:中国石化出版社,2003.5.
20 梁杰群,廖勇,覃洁.聚合硫酸铁处理终端焦化废水的研究[J].中国环境监测,2002,18(4):63～64.
21 晋建民.应用A/O工艺处理焦化废水[J].中氮肥,2002,3(2):35～37
22 杨天旺,吴洪英,林齐枢.A_1-A_2/O工艺结合生物流化床降解焦化废水NH_3-N、COD中试研究[J].煤化工,2002,3:52～62.
23 郭行杰.焦化废水处理的新工艺——缺氧-好氧-接触氧化法[J].环境保护,1999,6:20～21.
24 王小钧.A/O+生物膜工艺处理焦化废水[J].山西建筑,2003,29(14):76～77.
25 耿安朝,张洪林.废水生物处理发展与实践[M].沈阳:东北大学出版社,1997.10
26 陈欢林.环境生物技术与工程[M].北京:化学工业出版社,2003.8
27 江萍,黎俊,张文涛,等.生物接触氧化法处理有机废水的进展[J].环境与开发,2000,15(4):6～7,28.
28 马文漪,杨柳燕.环境微生物工程.第1版[M].南京:南京大学出版社,1998.
29 Hu Z. Adsorption and Bioregradation of pentachlorophenol by polyurethane-immobilized Flavohacterium[J]. Environment Science Technology, 1994, 28: L491
30 Wiesei I. Degredation of polycyclic aromatic hydrocarbons by an immobilized mixed hacterial culture[J]. Applied Microbial Biotechnology, 1993, 9: 110～116
31 胡家骏,周群英.环境工程微生物学[M].北京:高等教育出版社,1988.4
32 王克科,杨昌柱.焦化废水生物处理技术[J].湖北化工,2003,2:1～4.
33 侯红娟,周琦,杨云龙.焦化废水中难降解有机物处理试验研究[J].工业用水与废水,2002,33(4):39～42.
34 Toh S K, Webb R I, Ashbolt N J. Enrichment of autotrophic anaerobic ammonium-oxidizing consortia from various wastewaters[J]. Microbial Ecology, 2002, 43: 154～167.
35 张岩,吕峰,张守健,等.化学沉淀—A/O工艺处理合成氨废水[J].中国给水排水,2004,20(3):77～79.
36 关建立,王仙峰,徐建红,等.焦化废水活性污泥系统培菌的研究[J].山西大学学报(自然科学版).,2002,25(1):78～81.
37 史长苗,陈启斌.水解酸化一好氧生物处理焦化废水的试验研究[J].科技情报开发与经济,2002,12(1):114～115.
38 金兆丰,张效国,徐竟成,等.含高浓度酚焦化废水处理工艺研究[J].上海化工.1999,14:22～24.
39 毛云海,曹吉良.A-O法焦化废水处理装置的开工与调试[J].燃料与化工,2003,34(1):29～33.
40 王彬,杨平.去除焦化废水中COD、NH_3-N的生物处理技术[J].云南环境科学,2000,19:158～161,171.
41 吴跃辉,邓岩松,吴建辉.纳米TiO_2光催化剂在工业有机废水处理中的研究[J].江西化工,2004(1):18～20,24
42 徐长城,高原.TiO_2光催化降解焦化废水的研究[J].昆明理工大学学报(理工版),2003,28(4):109～112.
43 Butterfield I M, Christensen P A, Curtis T P, et al. Water disinfection using an immobilized titanium dioxide film in a photochemical reactor with electric field enhancement[J]. Water Research, 1997,31(3):675～677.
44 董德贵,温青,矫彩山,等.光催化降解水中污染物的研究[J].应用科技,2003,31(3):63～65.
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