共查询到18条相似文献，搜索用时 750 毫秒
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采用溶胶凝胶法制备了掺杂La-Nd混合元素的Ti/Sb-SnO2电极,掺杂比例为Sn∶Sb∶La∶Nd=100∶10∶5∶4(原子质量比),通过正交实验确定该电极处理酱油废水的最佳工艺条件:电流密度40mA/cm2,电解时间90 min,极板间距4.0cm,pH值为5,在此条件下电极对酱油废水COD和色度的去除率分别为34.3%和90.11%,达到了预处理要求。 相似文献
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何锦强 《广东轻工职业技术学院学报》2009,8(3):17-20
采用三维电极/Fenton试剂/中和法对广东某包装厂高浓度油漆废水进行处理,实验结果表明：油漆废水通过铁板三维电极在电压18V、极板间距4cm、pH自然和电解3h条件下,COD去除率达67.1%;电解水在H2O2投加量为13mL/L（30%）、Fe^2＋投加量为40mL/L（10%）、反应时间为3h时,COD为109mg/L;将处理水pH调至6-9,出水COD可降至100mg/L以下,达到国家《污水综合排放标准》（GB8978-1996）二级排放标准。 相似文献
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《甘肃高师学报》2022,(5)
以蛭石和人造沸石为吸附剂,采用正交实验的方法研究吸附时间、样品用量、溶液pH值、溶液的初始浓度对其吸附Pb(2+)和Cd(2+)和Cd(2+)的影响及在模拟废水中对Pb(2+)的影响及在模拟废水中对Pb(2+)的吸附性能.蛭石对模拟废水中Pb(2+)的吸附性能.蛭石对模拟废水中Pb(2+)的吸附率为86.27%,对Cd(2+)的吸附率为86.27%,对Cd(2+)的吸附率为85.25%.人造沸石对Pb(2+)的吸附率为85.25%.人造沸石对Pb(2+)吸附率为99.78%,对Cd(2+)吸附率为99.78%,对Cd(2+)的吸附率为99.98%,人造沸石对Pb(2+)的吸附率为99.98%,人造沸石对Pb(2+)和Cd(2+)和Cd(2+)两种重金属离子的吸附性能比蛭石好. 相似文献
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采用价廉的涤纶滤膜作为电解体系隔膜,利用阴、阳极同时作用降解含酚工业废水,在反应时间80min,曝气量1.2L/min,电流密度30mA/cm2的最佳条件下,含酚废水COD去除率可达到80%,阴极室COD去除率高于阳极室。 相似文献
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硫化黑是目前使用最广泛的黑色染料之一，但其生产过程往往会产生大量废水，且废水色度大、成分复杂、COD高、可生化性差。本文制备了一种新型聚硅酸铝铁/锌铝类水滑石复合材料(PSAF/ZnAl-LDHs),对工业硫化黑染料废水进行了处理。研究结果表明，当复合材料中PSAF和ZnAl-LDHs的质量配比为2∶1,复合材料投加量为80 mg/L时，PSAF/ZnAl-LDHs对硫化黑染料废水的处理效果最佳，此时废水COD、色度、TDS的去除率分别为92.5%、89.2%和95.3%。 相似文献
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《淮北师范大学学报》2015,(2)
制药废水是一种难生物降解的高浓度有机工业废水,处理困难.研究以某制药股份有限公司综合排放废水为对象,分别采用Fenton和UV-Fenton法对制药废水进行处理,分析试剂投加量、反应初始p H和反应时间等对反应的影响.结果表明,Fenton法处理制药废水的最佳条件为:Fe SO4·7H2O投加0.036 mol/L,H2O2投加0.128 mol/L,初始p H为4.3,反应时间为2 h,CODCr去除率为43.9%.UV-Fenton法处理制药废水缩短反应时间,减少试剂投加量,最佳处理条件为:UV处理时间为7 min,Fe SO4·7H2O投加0.029 mol/L,H2O2投加0.102 mol/L,初始p H为4.3,反应时间为75 min,最佳条件下CODCr去除率优于Fenton法,可达63.5%,且污水B/C增至0.39,提高可生化性. 相似文献
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采用溶胶凝胶法合成纳米二氧化钛光催化剂,X衍射及红外表征显示银已进入催化剂晶胞中.以汞灯模拟紫外光,氙灯模拟自然条件下太阳光催化降解酸性红B染料,结果表明1%和2%银掺入提高了纳米二氧化钛的可见光催化效能,使得催化剂的吸光波长范围红移,X衍射表征及催化剂筛选实验表明2%Ag-TiO2为锐钛矿晶型,具有较高催化活性,常温常压500 w氙灯照射下,催化剂用量为1.5 g/L、模拟废水pH=4、光照150 min、模拟废水浓度为50 mg/L时,酸性红B染料模拟废水的脱色率达90%,矿化率达60%. 相似文献
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Hong-zi Zhang Xu-wei Long Ru-yi Sha Guo-liang Zhang Qin Meng 《Journal of Zhejiang University. Science. B》2009,10(11):852-859
Oily wastewater generated by various industries creates a major ecological problem throughout the world. The tra-ditional methods for the oily wastewater treatment are inefficient and costly. Surfactants can promote the biodegradation of pe-troleum hydrocarbons by dispersing oil into aqueous environment. In the present study, we applied rhamnolipid-containing cell-free culture broth to enhance the biodegradation of crude oil and lubricating oil in a conventional aerobically-activated sludge system. At 20 ℃, rhamnolipids (11.2 mg/L) increased the removal efficiency of crude oil from 17.7% (in the absence of rham-nolipids) to 63%. At 25 ℃, the removal efficiency of crude oil was over 80% with the presence of rhamnolipids compared with 22.3% in the absence of rhamnolipids. Similarly, rhamnolipid treatment (22.5 mg/L) for 24 h at 20 ℃ significantly increased the removal rate of lubricating oil to 92% compared with 24% in the absence of rhamnolipids. The enhanced removal of hydrocarbons was mainly attributed to the improved solubility and the reduced interracial tension by rhamnolipids. We conclude that a direct application of the crude rhamnolipid solution from cell culture is effective and economic in removing oily contaminants from wastewater. 相似文献
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To deeply clean oily wastewater,molecular sieve residues (MSRs) were sufficiently recycled and utilized due to their high specific surface area,porous structure,and outstanding adsorption property.Molding MSRs (MMSRs) were prepared by adding additives (starch,citric acid,and soluble glass) to MSRs and were then filled into a fixed bed for adsorbing and separating the oil in wastewater.Sodium dodecylbenzenesulfonate was used to modify the MMSRs,and their adsorption property was also investigated.In addition,the MSRs were characterized by scanning electron microscopy,energy-dispersive X-ray spectroscopy,Brunauer-Emmett-Teller analysis,and Fourier transform infrared spectroscopy.The results indicated that MMSRs satisfied the filling requirement of fixed bed,and their dynamic adsorption capacity could reach 0.1854 mg g~(-1).Furthermore,the static adsorption capacity of MMSRs achieved 1.7346 mg g~(-1) in the optimum conditions,and the oil adsorption performance of modified MMSRs was further enhanced.Therefore,this work suggests that MSRs are promising alternatives in cleaning oily wastewater. 相似文献
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Bioflocculants have received increasing attention in research because they are low cost, non-toxic, biodegradable, operationally simple and useful in many water and wastewater treatment applications. In this study, we focused mainly on the screening of the flocculant-producing strain and its application in oily wastewater treatment. Bacteria strain B-6-1 was isolated by the pyridine screening method. UPC-1 reagent produced by B-6-1 had efficient flocculating activity. It was deduced that the main component of UPC-1 reagent was polysaccharide through purification and analysis. The influence of dosage of reagent, pH value, temperature and oil concentration on the flocculation effect of UPC-1 reagent was investigated. 相似文献
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徐友辉 《四川职业技术学院学报》2003,13(1):92-93
85％增效机油乳剂是用于防治蚧、蚜、螨等害虫的一种乳油类农药，此种农药采用精脂酸钠和松香钠皂作乳化剂、工业乙醇作助剂和有机农药胺甲萘作增效剂，该工艺生产的85％增效机油乳剂具有质量稳定、药效明显等特点。 相似文献
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根据酱菜废水的水质特点,采用两级SBR处理酱菜废水,对其处理效能进行了研究。结果表明：室内温度维持在17～22℃,进水有机物浓度在3000mg/L,DO为4.2mg/L,反应器运行工况为进水0.5h—曝气8h—沉淀1h—滗水0.5h—待机2小时的条件下,二级SBB反应器对BOD、COD、TN、NH4＋-N、TP的去除率分别达到98.3%、97.5%、88.7%、97.1%、52.4%。 相似文献