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Huu D Doan Jianning Wu Edwin Boithi Megan Storrar 《Journal of chemical technology and biotechnology (Oxford, Oxfordshire : 1986)》2003,78(6):632-641
Simulated wastewater containing propylene glycol methyl ether, Ni2+ and Zn2+ was treated using an aerated packed column. An electrochemical cell was also installed beneath the packing support in the bottom section of the column. The flowrate of water through the column was maintained at 8.94 kg m?2 s?1. For 72 h of treatment using aeration alone, the BOD5 was reduced by 43%, 56%, and 54% for air flowrates of 0.00094, 0.00141, and 0.00188 kg m?2 s?1 respectively. On the other hand, when the electrochemical cell was activated without aeration, the BOD5 was reduced by 15%, 17%, and 23% at the applied voltages of 8, 16, and 25 V respectively. When both aeration of the wastewater and a voltage of 25 V were used, the percentage removal of BOD5, on the average, was about 65% for all air flowrates used. The concentrations of Ni2+ and Zn2+ were also reduced by 57% and 61% respectively, in the absence of the supporting electrolyte. The addition of potassium chloride (100 ppm) as the supporting electrolyte enhanced the metal removal by 30%. Copyright © 2003 Society of Chemical Industry 相似文献
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某轮胎工厂采用生物接触氧化工艺处理厂区生产废水及污水,本文对该工艺的特点及实际运行情况进行了分析。 相似文献
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Chemical oxygen demand (COD) removal was investigated using a three-dimensional electrochemical system. The effects of electrode position, pH value, initial temperature, circulation flow, aeration, and addition of hydrogen peroxide on the removal efficiency of the pollutant were studied. The fillers used in the experiment were centimetre-sized and electrolyte was obtained from an industrial factory with a concentration of COD as high as 25 000–27 500 mg L−1, which was rare in other studies of the past. The degradation of organics was affected by pH and circulation flow, and a decrease in the initial pH value led to the increase in removal efficiency, while a trend of increasing at first and then decreasing was observed with the extension of circulation flow. Aeration and hydrogen peroxide served as enhanced processes for a higher removal rate. Both ultrasound and ultraviolet had effects on the electrolysis system. Oxygen uptake rate measurement and bio-treatment experiments demonstrated a significant increase in biodegradability with this three-dimensional electrochemical system. In addition, a pilot scale test in a pharmaceutical factory showed an economic benefit on energy consumption, which was as low as 10 kWh kg−1 COD. 相似文献
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简要介绍了臭氧氧化、曝气生物滤池(BAF)、Fenton氧化工艺的常见型式,并从处理规模、进出水水质、设计参数、主要构筑物及设备、经济指标、三废情况等方面介绍了臭氧氧化+BAF和Fenton氧化+沉淀过滤这2种深度氧化处理技术在部分工业废水处理工程中的应用。总结了2种深度处理技术的技术特点和适用范围,为废水深度处理技术的选择提供参考,并发现了在考虑废气处理、污泥处置及废水回用的情况下,臭氧氧化+BAF技术更具优势。 相似文献
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生物微电解-高效接触氧化工艺处理生物制药废水 总被引:3,自引:1,他引:3
采用生物微电解与高效接触氧化工艺相结合,利用WJ20型高效生物微电解填料和LK40型生物亲和性组合填料对生物制药废水进行了处理,并采用化学法对磷进行进一步处理。该工艺简单,挂膜好,处理效果稳定,处理成本低。实际运行结果表明,该工艺在进水CODCr500mg/L、BOD5250mg/L、氨态氮30mg/L、磷酸盐(以P计)15mg/L的条件下,处理后的出水CODCr<90mg/L、BOD5<20mg/L、悬浮物<60mg/L、pH6~9、氨态氮<10mg/L、磷酸盐(以P计)<0.5mg/L,完全达到DB44/26—2001中的一级标准。 相似文献
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采用生物接触氧化+沸石生物滤池组合工艺深度处理污水厂出水,考察工艺对CODCr、NH3-N、TP和SS的去除效果并研究温度对组合工艺处理效果的影响;在进水CODCr、NH3-N、TP、SS的质量浓度分别为70~120、30~70、1~3、25~70 mg/L,HRT为5.5 h的条件下,该工艺对CODCr、TP和SS的平均去除率可达60%、25%和85%左右,对氨氮的平均去除率为85%以上,工艺受温度的影响较小。 相似文献
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Combined processes for wastewater purification: treatment of a typical landfill leachate with a combination of chemical and biological oxidation processes 下载免费PDF全文
Deniss Klauson Arthur Kivi Eneliis Kattel Kati Klein Marika Viisimaa Juri Bolobajev Siiri Velling Anna Goi Taavo Tenno Marina Trapido 《Journal of chemical technology and biotechnology (Oxford, Oxfordshire : 1986)》2015,90(8):1527-1536
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生物处理技术在高浓度有机废水处理中的研究进展 总被引:2,自引:0,他引:2
阐述了高浓度有机废水的特点及危害,系统地介绍了国内外目前高浓度有机废水的主要生物处理技术及其研究现状,并提出今后高浓度有机废水治理的重点是优化组合技术及新技术的研究开发. 相似文献
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混凝-氧化法处理喷漆废水的应用研究 总被引:1,自引:0,他引:1
采用一种新工艺,以微生物为催化剂,常温常压下用空气氧化制备生物聚合硫酸铁(BPFS),结合Fenton试剂对喷漆废水进行混凝-氧化试验.BPFS与PAM联用,混凝去除喷漆废水中悬浮状有机物,混凝出水再经Fen-ton试剂氧化处理,进一步深度氧化去除溶解态有机物,实验确定了最佳处理条件.结果表明:研制的聚合铁性能优良,凝聚作用显著,经混凝-氧化处理后废水的CODCr从880 mg/L降至25 mg/L(去除率达97%),色度为0,悬浮物<50 mg/L,完全可以达标排放. 相似文献
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玄武岩纤维载体生物接触氧化工艺处理印染废水 总被引:1,自引:0,他引:1
为了考察温度、p H和质量配比对印染废水处理性能影响,构建了以玄武岩纤维为载体、旋流散气管为曝气方式的生物接触氧化废水处理系统,试验研究了各工艺参数对处理性能的影响变化规律。结果表明:玄武岩纤维载体挂膜速度较快且在夏季具有较高的COD处理效果,HRT=20 h时,其COD去除率可稳定在75%以上,而低温下仅为40%左右,延长低温运行的HRT到39 h时,COD去除率可稳定在85%以上。另外,试验结果还表明,低温下系统最佳p H适应范围是7~7.5,COD的去除率最高可达89.5%,而C、N、P最佳质量配比则为100∶5∶0.5。 相似文献