共查询到18条相似文献，搜索用时 125 毫秒
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超声协同-钛铁双阳极电化学处理印染废水的研究 总被引：8，自引：1，他引：8
采用超声电化学联用技术，探索超声协同-钛铁双阳极电解体系降解印染废水。该系统集超声空化、阳极催化氧化、电生自由基氧化和电絮凝等组合物化技术于一体，降解含有碱性湖蓝-5B的印染废水。研究结果表明：对COD为5342．4mgL^-1的含碱性湖蓝-5B的印染废水的COD去除率达到90．2％，脱色率达到98．3％。 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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研究了微电解技术在处理印染废水中的应用,采用正交实验确定了最佳的实验条件．实验结果表明,通过微电解能够去除印染废水中50％以上的COD,同时可以将BOD／COD从0．3左右提高到0．5． 相似文献
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王怀宇 《邢台职业技术学院学报》2008,25(3):64-66
本文以PAC／PAM复合絮凝剂处理洗毛废水进行小试。研究表明PAC与废水形成（20-30）μm的小絮体,PAM主要起到连接小絮体形成矾花。自由絮凝时,当COD：PAC：PAM为8．43：1：0．013、PH为5、水温为45℃时,COD、SS去除率分别达到97％、92％。 相似文献
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研究以ClO~-/Cl~-作媒质,间接电化学降解高浓度甲基紫模拟废水的可行性。结果表明,甲基紫的电化学脱色率与电极材料、电流密度、pH值和添加剂种类等因素有关。以石墨为阳极,不锈钢为阴极,在无隔膜的烧杯中放置50mL,浓度为10.0～100.0mg/L的甲基紫模拟废水,在室温25℃,pH=6.0,ω(NaCl)=1.2％,槽电压15V,电流密度为45.2mA/cm~2的条件下,电解12min后,甲基紫的脱色率高达95％。外加少量的Mn~2 盐(15mg/L)可大大加快其脱色速率。并初步探讨了降解机理。 相似文献
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朱蕾 《渭南师范学院学报》2014,29(19):34-38
在处理制革废水中常用SBR工艺,试验探讨了不同HRT、进水pH、COD负荷、NH3-N浓度、活性污泥浓度的运行参数,研究SBR工艺处理制革废水的最优运行参数．结果表明：SBR反应器在进水COD为1500～2000mg／L、NH3-N为150～250mg／L、pH为7．5、运行污泥浓度在3．0g／L左右、曝气时间为18h时COD去除率能达到95％左右,NH3-N去除率达到97％左右,其出水能够达到一级出水标准． 相似文献
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以双氰胺、甲醛为主要原料合成了阳离子高效有机絮凝剂双氰胺一甲醛脱色剂,并与聚合氯化铝（PAC）以及聚丙烯酰胺（PAM）配合使用,处理模拟染料废水．通过考察脱色剂用量、絮凝剂的投加顺序、PAC用量以及pH值这几个方面对脱色率的影响,并通过正交试验寻求最佳试验条件．研究结果表明,影响脱色效果的主次因素依次为：脱色剂用量、pH值、聚合氯化铝用量．脱色剂用量为1．5—2．0mL／L,染料废水的pH值为7．5—9．5,PAC用量为50—90mg／L时,模拟染料废水的脱色率均可达92％以上,COD的去除率因染料种类的不同而存在一定的差异。不过也都在84％以上． 相似文献
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SBR法处理模拟印染废水的实验研究 总被引：1，自引：0，他引：1
采用实验室规模的序批式活性污泥曝气反应器（SBR）工艺处理模拟的印染废水．通过实验分析了不同曝气时间、进水浓度、静沉时间与SBR处理效果之间的关系,确定了SBR法处理中低浓度的印染废水的最佳运行参数．实验结果表明,在SBR的曝气时间为8h,沉淀时间为1h的条件下,且废水进水pH值为7．5～8．6,COD—cr为8901080mg／L、氨氮为13～20mg／L、色度为350倍左右时,该工艺对CODcr、氨氮、色度等均有很好的去除效果,经处理的印染废水COD、氨氮、色度去除率分别为50％～70％、40％～67％、20％．该法具有投资少、运行费用低、操作简单的特点． 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
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进行了海绵铁内电解法作为印染废水预处理工艺的试验研究,试验结果表明：在pH=5-6、海绵铁投加量50g/L、反应时间60min及一定的搅拌强度条件下,可去除40%左右的色度、30%左右的COD,废水可生化性得到有效改善。研究表明,海绵铁内电解工艺用于印染废水预处理效果良好,具有一定的推广价值。 相似文献
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Qing WEN Ying WU Li-xin ZHAO Qian SUN Fan-ying KONG 《Journal of Zhejiang University. Science. B》2010,11(2):87-93
A sequential anode-cathode double-chamber microbial fuel cell (MFC), in which the effluent of anode chamber was used as a continuous feed for an aerated cathode chamber, was constructed in this experiment to investigate the performance of brewery wastewater treatment in conjugation with electricity generation. Carbon fiber was used as anode and plain carbon felt with biofilm as cathode. When hydraulic retention time (HRT) was 14.7 h, a relatively high chemical oxygen demand (COD) removal efficiency of 91.7%–95.7% was achieved under long-term stable operation. The MFC displayed an open circuit voltage of 0.434 V and a maximum power density of 830 mW/m3 at an external resistance of 300 ?. To estimate the electrochemical performance of the MFC, electrochemical measurements were carried out and showed that polarization resistance of anode was the major limiting factor in the MFC. Since a high COD removal efficiency was achieved, we conclude that the sequential anode-cathode MFC constructed with bio-cathode in this experiment could provide a new approach for brewery wastewater treatment. 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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利用辉光放电等离子体技术降解橙黄G偶氮染料废水,借助紫外光谱分析了其降解过程,考察了多种因素对其降解效果的影响.结果表明,提高染料初始浓度和电解质浓度可提高橙黄G的降解率.改变溶液的初始pH值,橙黄G的降解率随溶液的初始pH值升高而增加.橙黄G降解60min后,无催化剂时,降解率达到71.68%;在催化剂Fe^2＋和Mn^2＋存在时降解率达到92.48%和89.69%,COD去除率为95.85%和63.44%;H2O2存在时,降解率达到78.91%. 相似文献
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Aerobically activated sludge processing was carried out to treat terylene artificial silk printing and dyeing wastewater (TPD wastewater) in a lab-scale experiment, focusing on the kinetics of the COD removal. The kinetics parameters determined from experiment were applied to evaluate the biological treatability of wastewater. Experiments showed that COD removal could be divided into two stages, in which the ratio BOD/COD (B/C) was the key factor for stage division. At the rapid-removal stage with B/C>0.1, COD removal could be described by a zero order reaction. At the moderate-removal stage with B/C<0.1, COD removal could be described by a first order reaction. Then Monod equation was introduced to indicate COD removal. The reaction rate constant (K) and half saturation constant (KS) were 0.0208-0.0642 L/(gMLSS)·h and 0.44-0.59 (gCOD)/L respectively at 20 ℃-35 ℃. Activation energy (Ea) was 6.05×104 J/mol. By comparison of kinetic parameters, the biological treatability of TPD wastewater was superior to that of traditional textile wastewater. But COD removal from TPD-wastewater was much more difficult than that from domestic and industrial wastewater, such as papermaking, beer, phenol wastewater, etc. The expected effluent quality strongly related to un-biodegradable COD and kinetics rather than total COD. The results provide useful basis for further scaling up and efficient operation of TPD wastewater treatment. 相似文献
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INTRODUCTIONInordertogetpliableandelegantterylenefabricjustlikesilk,terylenegreigeclothisalwayspretreatedwithalkali-decompositionprocesswh-ereinterylenegreigeclothishydrolyzedtosomeextentinNaOHsolutionatcertaintemperature(T)andpressure.Duringthisprocess,thesuperficialterylenefibreispeeledofffromtheclothanddis-solvedintosolution,inwhichteryleneacid(TA)andethyleneglycolaredischargedaspollutantsinwastewater.Theobtainedterylenefabricwithsi-lkenwrinkleandsoftfeelingiscalledartificialsilkfabr… 相似文献