共查询到18条相似文献,搜索用时 109 毫秒
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固定化白腐真菌反应器与接触氧化反应器联用处理癸二酸生产废水 总被引:1,自引:1,他引:0
采用固定化白腐真菌(WRF)反应器与接触氧化反应器联用处理癸二酸废水。在WRF反应器中,以汽曝玉米秸秆为载体,并添加铜、铁促进白腐真菌生长和产酶作用,载体的使用寿命约为45 d。在进水苯酚平均质量浓度为69.36 mg/L、平均进水COD为1 648.81 mg/L的条件下,经WRF反应器处理后,苯酚平均质量浓度降至7.59 mg/L,平均出水COD降至478.03 mg/L;再经接触氧化反应器处理后,苯酚平均质量浓度降至1.65 mg/L,平均出水COD降至297.31 mg/L。 相似文献
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膜生物反应器技术在石化污水处理中的应用进展 总被引:5,自引:1,他引:4
介绍了膜生物反应器技术的发展状况,总结了近年来膜生物反应器技术的应用情况。针对膜生物反应器技术在石化污水处理中遇到的一些问题提出了应对的方法,并展望了今后的应用趋势。 相似文献
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用水解酸化池-膜生物反应器处理活性艳红X-3B废水 总被引:1,自引:0,他引:1
采用水解酸化池-膜生物反应器处理含活性艳红X-3B的模拟废水,研究了水力停留时间(HRT)对水解酸化池废水处理效果的影响,考察了水解酸化池-膜生物反应器对废水的处理效果及膜生物反应器中污泥沉降性能对膜污染的影响。实验结果表明:水解酸化池HRT为16h时,废水的可生化性最好,挥发性脂肪酸质量浓度与COD比值为0.5;HRT为17h时,废水脱色率达69%,而COD的去除率受HRT影响较小;膜生物反应器主要起去除废水中COD的作用;水解酸化池-膜生物反应器处理后废水的脱色率和COD去除率分别为83%和97%;膜生物反应器中活性污泥沉降性能的变化直接影响膜污染的速率。 相似文献
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厌氧生物法废水处理技术进展 总被引:2,自引:0,他引:2
阐明了厌氧生物法处理废水的特征,并着重介绍了厌氧接触反应器、厌氧流化床反应器、厌氧膨胀床反应器.厌氧生物转盘和厌氧污泥床反应器在各种厌氧生物法处理废水工艺中的应用情况。 相似文献
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生物反应器处理废物土地填埋场沥滤液ChemicalEnginering,106[3],25(1999)到目前为止主要用于废水处理的生物反应器技术将具有新应用。美国Envirogen公司开发出一种膜式生物反应器(MBR),用于土地填埋场沥滤液的处理,并... 相似文献
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耦合光催化与生物处理4-氯酚废水 总被引:11,自引:0,他引:11
采用三相内循环式流化床光反应器和固定床生物反应器耦合处理4-氯酚(4-CP)废水。光反应器中采用粗孔硅胶负载的具有高活性和长寿命的TiO2为催化剂,处理效率高。废水的BOD5/COD及固定床生物反应器处理效果表明,4-CP为难生物降解物,光催化预处理能显著增强废水的可生化性。在单级耦合处理中,光催化预处理4h后进行生物处理,能达到最佳效率,但要完全矿化COD则需要延长预处理时间。光催化预处理为生物处理提供可降解性COD,后者却没有机会作用于前者。在多级耦合处理中,两者之间存在协同作用,使多级耦合处理效率大大提高。 相似文献
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F. Rigas R. Marchant V. Dritsa E. Kapsanaki-Gotsi Z. Gonou-Zagou E. J. Avramides 《Water, Air, & Soil Pollution: Focus》2003,3(3):201-210
Many papers have shown that white rot fungi can degrade aromatic pollutants under laboratory conditions, but few report field scale trials. Here we report the first steps in the development of a remediation system for Greek conditions. A review of the available organochlorine compound pollution information in Greece is presented. White rot fungi isolated from sites in Greece have been screened for growth rate and ligninolytic activity, using decolourisation of the dye Poly R-478 as an indicator of enzyme activity. Use of white rot fungi under field conditions in Greece will require bioaugmentation to be effective at high temperatures and low water activity for much of the year. The most potent strains have been selected under a range of conditions and have been challenged with priority pollutants to determine their degradative ability under laboratory conditions and subsequently ex situ in soil. 相似文献
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O. Milstein R. Gersonde A. Huttermann R. Frund H. J. Feine H. D. Ludermann M. -J. Chen J. J. Meister 《Journal of Polymers and the Environment》1994,2(2):137-152
The degradation of lignin-(1-phenylethylene) graft copolymers (lignin-styrene graft copolymers) by white rot basidiomycete fungi was followed by monitoring aromatic absorption bands by Fourier transform infrared (FTIR) spectroscopy and nuclear magnetic resonance (NMR) spectroscopy. The FTIR of the graft copolymers shows a series of characteristic absorbance peaks from multi-substituted aromatic rings and a strong poly(1-phenylethylene) (polystyrene) absorbance peak from monosubstituted aromatic rings. Subtraction of copolymer spectra taken before incubation from spectra taken after 50 days of incubation with the four tested fungi shows the loss of functional groups from the copolymer. NMR spectra also show reduction of aromatic ring resonances from the copolymer and incorporation of peaks from fungi as a result of incubation with fungi. The biodegradation tests were run on lignin-(1-phenylethylene) graft copolymers which contained 10.3, 32.2, and 50.4% of lignin. The polymer samples were incubated with the white rot fungiPleurotus ostreatus, Phanerochaete chrysosporium, andTrametes versicolor, and the brown rot fungusGleophyllum trabeum. White rot fungi degraded the plastic samples at a rate that increased with increasing lignin content in the copolymer sample. Both poly(1-phenylethylene) and lignin components of the copolymer were readily degraded. Observation by scanning electron microscopy of incubated copolymers showed a deterioration of the plastic surface. The brown rot fungus did not affect any of these plastics, nor did any of the fungi degrade pure poly(1-phenylethylene).Paper presented at the Bio/Environmentally Degradable Polymer Society—Second National Meeting, August 19–21, 1993, Chicago, Illinois. 相似文献
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好氧生物流化床反应器处理有机废水技术进展 总被引:28,自引:0,他引:28
介绍了国内外好氧生物流化床反应器处理有机废水技术的发概况,分析了好氧生物流化床反应技术的发展动向,并介绍了几种新型的好氧生物流化床反应器。 相似文献
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Treatment of anti-osmotic drug based pharmaceutical effluent in an upflow anaerobic fluidized bed system 总被引:4,自引:0,他引:4
During the production of Cephradine (a main constituent of anti-osmotic drug) a large quantity of concentrated effluent was produced. The main polluting compounds in this effluent are osmotic drug, acetic acid and ammonia. The feasibility of using a fluidized bed reactor under anaerobic condition with bioaugmentation to treat anti-osmotic drug based pharmaceutical effluent was evaluated. The main objective of the study was to show that bioaugmentation could be used to promote biological treatment to applications where conventional operation might be difficult or unfavourable. The effluent with chemical oxygen demand (COD) of 14000-18000 mg/l was treated in a fluidized bed reactor with a hydraulic retention time of 3-12 h. The reactor was unable to maintain consistent removal in conventional mode of operation due to an inability to retain and grow biomass. The COD reduction (%) after inoculation from a sequencing batch reactor was related to influent concentration, mass of inoculum and hydraulic retention time characterized by calculating the initial food to microorganism ratio. The role of volatile fatty acid (VFA) as cosubstrate was assessed with respect to COD reduction (%). Continuous COD reduction (%) attained a maximum value of 88.5% using bioaugmentation through periodic addition of acclimated cells every 2 days with 30-73.2 g of cells from an off-line enricher reactor. 相似文献
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Only 1-2 percent of discarded dry batteries are recovered in China. It is necessary to find an economic and environmentally friendly process to recycle dry batteries in this developing country. Bioleaching is one of the few techniques applicable for the recovery of the toxic metals from hazardous spent batteries. Its principle is the microbial production of sulphuric acid and simultaneous leaching of metals. In this study, a system consisting of a bioreactor, settling tank and leaching reactor was developed to leach metals from nickel-cadmium batteries. Indigenous thiobacilli, proliferated by using nutritive elements in sewage sludge and elemental sulphur as substrates, was employed in the bioreactor to produce sulphuric acid. The overflow from the bioreactor was conducted into the settling tank. The supernatant in the settling tank was conducted into the leaching reactor, which contained the anode and cathodic electrodes obtained from nickel-cadmium batteries. The results showed that this system was valid to leach metals from nickel-cadmium batteries, and that the sludge drained from the bottom of the settling tank could satisfy the requirements of environmental protection agencies regarding agricultural use. 相似文献
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采用移动床生物膜反应器(MBBR)—厌氧移动床生物膜反应器(AMBBR)—MBBR组合工艺处理高氨氮化工废水。反应器采用几何构型优化、比表面积大的新型YD-25生物载体和DNF-203硝化细菌,实现了同步硝化和反硝化,强化了脱氮能力。采用投加菌种和排泥的方式,经27 d的驯化培养即完成了反应器的挂膜启动。试验结果表明:最佳操作条件为HRT 8 d、MBBR中DO 3 mg/L、进水pH 8.0;在进水COD 2 840~7 437 mg/L、ρ(氨氮)92~179 mg/L、TN 148~258 mg/L、pH 6~8的条件下,出水指标均值为COD 352 mg/L、ρ(氨氮)21.2 mg/L、TN 36 mg/L、pH 7.4,满足排放要求。 相似文献