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Fe^2+—H2O2氧化法处理氨基J酸工业废水的研究 总被引:13,自引:0,他引:13
用Fe^2+-H2O2氧化法处理氨基J酸工业废水。结果表明,当溶液pH=1-3,H2O2和Fe^2+用量分别为H2O2:Fe^2+10:1,H2O2:CODCr=2g:g时,J酸废水的CODCr去除率达66.7%,氨基去除率达68.4%。处理后的废水BOD5/CODCr=0.5,已达到生化处理的要求。该法可作为氨基J酸废水的预处理方法。 相似文献
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光催化氧化-混凝工艺处理化工废水 总被引:16,自引:0,他引:16
探索了光催化氧化-混凝工艺处理废水的工艺条件,最佳光催化氧化处理条件为PH=3,催化剂为铁盐,氧化剂H2O2,低压汞灯,光照时间1.5h,废水温度45℃,温凝剂选用PAC和PAM(混凝剂的投加量为原水CODcr:PAC:PAM=7:1.5:0.01),混凝PH6,沉降时间0.5h,在该工艺条件对CODcr为173-70144mg/L的十二烷基苯磺酸钠废水、苯酐废水、富马酸废水、邻苯二甲酸二辛酯废水 相似文献
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O3—H2O2组合法处理染料中间体废水的研究 总被引:4,自引:0,他引:4
报道了O3-H2O2组合法处理含有磺酸基团的萘系染料中间体废水的试验结果。对COD约为1600mg/l的某高浓度染料中间体废水,用5.1gO3/l和2.0gH2O2/l进行处理,可达到约60%的COD及色度去除率,并使BOD/COD的比值超过0.3,为后续生化处理创造了条件。 相似文献
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厌氧—好氧法处理渗滤液与城市污水混合废水的可行性 总被引:16,自引:1,他引:15
彩厌氧-好氧工艺对不同浓度的垃圾填埋场渗滤液与城市污水在不同混合比(VSH:VCH)时的处理效果及可行性进行了研究,厌氧段采用新型ABR反应器并将控制在水解酸化阶段。研究表明,当原渗滤液COD〈5500mg/L时,VSH:VCH达4:6是可行的,其稳定运行时的COD和BOD5去除率可分别达88.9%和96.8%当原渗滤液COD≥6500~8800mg/L时,须将VSH:VCH控制在2.8以内。 相似文献
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驯化活性污泥处理明胶有机废水的实验 总被引:9,自引:0,他引:9
利用驯化活性污泥对组分复杂的明胶有机废水进行有机物降解实验。结果表明,明胶废水的BOD5/CODcr比值为0.44-0.46,CODcr进水浓度在1000-1200mg/L人,CODcr和BOD5去除率分别达81%-83%和86%-91%。 相似文献
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SBR法处理化学药物制剂废水 总被引:2,自引:1,他引:1
采用 SHR法处理化学药物制剂废水. 调节 pH至7.5,进水 CODcr 224~1530 mm/L,曝气10 h, CODcr容积负荷达2.58kg/m~3·d,CODcr的去除率高达94.2%,处理后出水CODcr<100mg/L,达到综合排放标准(GB897-96)一级标准。CODcr容积负荷至3.84 kg/m~3·d, CODcr去除率仍>85.9%。 相似文献
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研究了以活性碳纤维吸附净化炼油厂二次生化砂滤出水的规律,并在实验中摸索出一整套工艺参数,对活性碳纤维反复吸(脱)附使用寿命进行估算,为炼油厂废水处理、回用的工业化提供参考。实验表明,每千克活性碳纤维可净化1.5吨废水,各项指标均达到循环水回用之要求,其吸附-脱附50次对废水的净化率为:CODcr51.2%,浊度80.5%,悬浮物82.1%,对挥发酚、石油类、硫化物等污染物质的净化效率均在90%以上 相似文献
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十三碳二元酸发酵有机废水处理研究 总被引:3,自引:0,他引:3
运用物化预处理和SBR生化工艺对十三碳二元酸发酵废水中高浓度有机物的降解特征及高2硫酸钠对微生物的有害抑制作用进行处理试验,研究结果表明。采用物化预处理与SBR生化法相结合的工艺可有效地处理该类废水。经驯化的耐盐微菌胶力和裂口虫为主,废水的CODcr去除率可达92%以上,BOD5去除率可达95%以上。 相似文献
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Hsin-ying Liu Patrizia V Hall Jeannie L Darby Erik R Coats Peter G Green Donald E Thompson Frank J Loge 《Water environment research》2008,80(4):367-372
Polyhydroxyalkanoate (PHA) production was achieved using tomato cannery waste coupled with a mixed microbial culture during wastewater treatment. The two-stage PHA production process comprised a sequencing batch reactor (SBR), operating under a periodic feast-famine regime, to accomplish simultaneously wastewater treatment and selection of PHA-accumulating microbes, followed by a batch reactor for the production of PHA-rich biomass. The SBRs were efficient at removing soluble carbon (84%), ammonia (100%), and phosphorus (76%). Meanwhile, PHA-accumulating microbes were enriched under the SBR operating conditions, and PHA content on a cell-weight basis was within the range 7 to 11% in nonfiltered wastewater and 2 to 8% in filtered wastewater. Subsequently, batch studies were implemented with varying loading rates, ranging from 0.4 to 3.2 food-to-microorganism ratios. A maximum 20% PHA content on a cell-weight basis was obtained. Based on the experimental results, a PHA biosynthesis-degradation kinetic model was developed to (1) aid in the design of a pilot- or full-scale PHA production process coupled with wastewater treatment and (2) determine optimal conditions for harvest of PHA-rich biomass. 相似文献
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Vanerkar AP Satyanarayan S Dharmadhikari DM 《Journal of environmental science and health. Part. B》2004,39(1):115-123
Toxic effects of herbal pharmaceutical wastewater on common fish (Lebistes reticulatus) under laboratory conditions were studied. LC50 values for raw, neutralized, and physico-chemically treated effluent for 24, 48, 72, and 96 h ranged between 3.0-9.5%, 5.0-10.5%, and 35-41%, respectively. It was evident from the studies that physico-chemical treatment reduces the toxicity by more than 30%. This article discusses in detail the bioassay evaluation of raw, neutralized, and primary treated effluent. Physico-chemically treated effluent was further subjected to biological treatment by activated sludge system. Effluent from biological treatment revealed no toxic effect even after one month of exposure. 相似文献
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通过对江汉油田采油废水水质分析以及混凝实验研究,分析采油作业返排液中主要化学组分对含油废水混凝处理效果的影响,探讨了混凝剂、常用油田化学品与浊度及油含量去除率的关系,初步分析了它们的作用机理。研究表明,在钻井液中,单宁、磺化酚醛树脂(SMP)等对含油废水处理的影响很大,在压裂液中瓜胶、重铬酸钾等的影响较大,酸化液中乙酸和柠檬酸等的影响较大,射孔液中盐酸等的影响较大。本研究的结果对于消除返排液对油田生产的不良影响,保证系列增储上产措施的实施及其有效性,避免环境污染,具有十分重要的参考价值。 相似文献
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SBR法处理柠檬酸废水的实验研究结果表明 :当柠檬酸废水COD浓度为 5 0 0— 2 5 0 0mg/L时 ,采用 16h运行周期 ,曝气进水 ,对COD均有很好的去除效果 ,一般在 90 %左右 ;当进水 pH在 3— 10的范围内 ,对COD去除率没有多大影响 ,但保持进水pH在 7— 8之间可以缩短反应时间 ;出水浊度与污泥的沉降性能有关 ,进水结束时MLSS应在 3.5 g/L左右。 相似文献
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Electroplating wastewater (EW) containing heavy metals was treated by a two-stage packed-bed reactor system. The EW was highly contaminated with hexavalent chromium and other heavy metals as well as sulfate because sulfuric acid had been mainly used to polish the surface of metals to be electroplated. This acidic EW was effectively neutralized in an alkaline reactor where limestone had been packed. The neutralized wastewater together with organic wastewater from a starch-processing factory (SPW) was fed to a bioreactor packed with waste biomass. The SPW was used to supplement the electron donor in the sulfidogenic bioreactor. During the whole operation, we investigated the stoichiometry of electron to see what could be a major factor to remove Cr in the wastewater. The removal rates of sulfate and Cr(VI) were dependent on the consumption rate of organic materials in the wastewater. The stoichiometric studies also showed that about 63% of electrons from oxidation of organic materials were used to reduce sulfate. When the electrons of sulfide oxidation to elemental sulfur was at least 1.3 times higher than that of Cr(VI) reduction to Cr(III), Cr(VI) was completely removed. This result suggests that Cr(VI) reduction can be expected to take place under sulfate-rich anaerobic conditions, and sulfide produced by sulfate reducing bacteria could be used to immobilize soluble chromium through Cr(VI) reduction. 相似文献
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This work establishes methods of reducing the amount of methane produced from the anaerobic treatment of piggery wastewater by either reducing the storage time before solid/liquid separation or inhibiting the activity of methanogens in anaerobic wastewater treatment system. Experimental results showed these two methods can be adopted effectively to reduce methane production resulting from anaerobic piggery wastewater treatment. First, the wastewater must be processed using solid/liquid separation immediately after washing pig houses. This process can reduce by 62% the biogas production and indirectly decrease the methane production from the anaerobic wastewater treatment reactor. Second, adding 10 mg L(-1) bromochloromethane (BCM) daily into the anaerobic wastewater treatment reactor can significantly reduce the amount of biogas and methane produced during the anaerobic fermentation process. Furthermore, biogas production can be completely inhibited after 4 days. Adding BCM (< or =10 mg L(-1)) to wastewater only slightly affected the efficiency of the anaerobic wastewater treatment process. Results in this study can provide the basis for further research on reduction of the amount of methane produced from anaerobic wastewater treatments. 相似文献
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《Journal of environmental science and health. Part. B》2013,48(5-6):889-902
Abstract This work establishes methods of reducing the amount of methane produced from the anaerobic treatment of piggery wastewater by either reducing the storage time before solid/liquid separation or inhibiting the activity of methanogens in anaerobic wastewater treatment system. Experimental results showed these two methods can be adopted effectively to reduce methane production resulting from anaerobic piggery wastewater treatment. First, the wastewater must be processed using solid/liquid separation immediately after washing pig houses. This process can reduce by 62% the biogas production and indirectly decrease the methane production from the anaerobic wastewater treatment reactor. Second, adding 10 mg L?1 bromochloromethane (BCM) daily into the anaerobic wastewater treatment reactor can significantly reduce the amount of biogas and methane produced during the anaerobic fermentation process. Furthermore, biogas production can be completely inhibited after 4 days. Adding BCM (≤10 mg L?1) to wastewater only slightly affected the efficiency of the anaerobic wastewater treatment process. Results in this study can provide the basis for further research on reduction of the amount of methane produced from anaerobic wastewater treatments. 相似文献