酸析＋Fenton法处理ITO触摸屏油墨废水

ITO（氧化铟锡）触摸屏产生的油墨废水是一种高浓度的有机废水,但BOD5／COD值仅为0107—0．08。针对油墨废水COD浓度高且BOD5／COD值低的特点,提出了采用“酸析-Fenton-混凝沉淀”进行处理的工艺方法,经实践证明该工艺处理效果稳定,出水质量可达到广东省《水污染物排放限值》（DB44／26—2001）第二时段一级标准。     

厌氧水解－好氧两段SBR处理焦化废水的研究

焦化废水含有毒物质多,生物降解性能差,对环境危害大。实验采用厌氧水解（酸化）－好氧（高效复合菌＋活性污泥）工艺处理焦化废水,进水COD、BOD5浓度分别为：698．13mg／l、232．0mg／l,经12h厌氧水解、18h好氧曝气后出水COD、BOD,浓度分别为136．93mg／1、39．3mg／l,NH3一N的去除率为68．37％。出水COD、BOD,满足《污水综合排放标准》（GB8978－96）中的排放要求。     

EWP高效废水净化器用于重金属废水治理的试验

电池生产过程排放的废水含汞、锌、锰等重金属污染物和有机污染物，本试验调节废水的pH值至7．5～8．5，在EWP高效净化器中，利用进入的废水自身生成的Zn(OH)2絮凝沉淀物形成吸附过滤床，对废水进行一级处理，试验结果表明：出水的汞为0．00092mg／L，去除率为96．2%；锌去除率为99．1%；锰去除率为55．1%；COD去除率为19．6%；BOD去除率为28．3%。     

加压生化—生物过滤法处理合成制药废水

应用加压生化与生物滤池相串联的生物处理工艺处理合成制药废水的试验表明：该工艺不但能够适应成份复杂多变以及污染物浓度较高、生物降解难度大的制药废水的处理，且效果显著。出水COD＜50mg／L，去除率为95％；BOD5＜10mg／L，去除率为97％；挥发酚的浓度＜0．1mg／L，去除率为99．9％；石油类的去除率为91％，各项水质指标均达到国家排放标准。     

温州城市降雨径流中BOD5和COD污染特征及其初始冲刷效应

为研究温州降雨径流污染情况,监测了温州2个采样区4场较为典型的降雨过程,测定了不同下垫面径流中BOD5和COD的浓度,并且计算出污染物的EMC值、M(V)曲线和BOD5/COD值等.结果表明,温州城市降雨径流中BOD5和COD的含量分别介于ND～69.21 mg.L-1和ND～636 mg.L-1之间,不同城市下垫面径流中BOD5和COD的含量均随着降雨历时的延长而呈下降趋势,处理初期径流水样对减少耗氧性有机污染具有重要意义.从COD和BOD5的EMC值来判断,部分城市下垫面降雨径流中污染物浓度超出地表五类水标准,甚至高于污水排放二级标准,此类降雨径流若直接入河将对下级受纳水体造成耗氧性有机污染的压力.根据M(V)累积曲线判断,COD初期冲刷效应在城市降雨径流中是较为普遍的,城市降雨径流中的BOD5表现出与COD类似的初始冲刷情况,该结果亦表明径流初期耗氧性有机污染严重.城市降雨径流中COD和BOD5的浓度受下垫面类型和降雨条件的影响,而BOD5/COD指标的变化特征则指出生物降解是削减有机污染负荷的有效途径之一,但不同下垫面径流有机污染的治理工作应采用不同的最佳管理方案(BMPs).     

水解酸化-厌氧-好氧法处理苯甲酸类化工废水研究

以某化工生产企业废水为例,介绍了水解酸化-厌氧-SBR工艺处理高浓度苯甲酸类生产废水的工程实例,该工程设计规模为70m^3／d,综合进水CODcr高达15000mg／L。实践表明,该工艺处理苯甲酸类废水是一种经济有效的处理方法。利用水解酸化对废水进行预处理,不仅有效地去除了77％的CODcr,还大幅提高了废水的可生化性,使BOD5／COD值由原水的0．33升高到O．54,提高了废水的可生化性,减轻了后续生化处理的负荷,并使最终出水CODcr小于500mg／L,出水可达《污水综合排放标准》（GB8978～1996）三级排放标准。     

用ABR处理中药废水的实践

文中对ABR反应器处理中药废水的效果及运行特性进行了研究。研究表明，在实验范围内，反应器的COD去除率在79％上，即使在有机负荷为5．05kgCOD／（m^3·d）时，COD去除率也可以达到75％以上：当水力停留时间为24h，提高有机负荷ABR反应器的COD去除率先升高后降低；BOD/COD的比值可达0．50。     

水解酸化-好氧工艺处理感光材料有机废水研究

感光材料有机生产废水含有多种合成有机物，其BOD5／CODer比值为0．46～0．48，可生化性良好，经水解酸化处理后该废水的BOD5／CODcr的比值可提高至0．54～056，平均增加了17％左右。水解酸化－好氧串联工艺对该废水总的处理效果表明：在废水CODer进水浓度2000～2500mg／L范围内，CODer总去除率可达95％左右，BOD5总去除率可达97％左右；水解酸化后好氧生化系统的动力学半速度常数Ks＝103mg／L，最大比降解速度K＝5．0／日。     

COD_(CH_4)/COD值评价垃圾渗滤液厌氧可生化性的研究

基于理论分析,提出CODCH4/COD值作为废水厌氧可生化性的评价指标,确定了CODCH4/COD值表示厌氧可生化性的数值界限。同时,在BMP分析的基础上,采用CODCH4/COD值考察了垃圾渗滤液的厌氧可生化性,并与BOD5/COD值评价结果进行了对比。实验结果显示,CODCH4/COD值与BOD5/COD值用于垃圾渗滤液可生化性的评价,得出的结论具有相似性,但CODCH4/COD值大于BOD5/COD值。究其原因:好氧条件下,总的生化耗氧量(BOD)u小于理论完全需氧量(COD);厌氧条件下,有机物完全去除时CODCH4(理)等于理论完全需氧量。此外,BOD5测试时间仅5 d,而BMP测试时间一般在30 d以上,从而使微生物有足够的时间去适应废水水质,故能较好地反映废水的可生化性。     

人工潜流湿地处理稠油采出水的实验研究

人工潜流湿地由3个面积各为900m^2的芦苇床组成，平均布水量分布为6m^3/d、18m^3/d和30m^3/d，进水污染物平均浓度为：COD401．08mg/L,BOD531.88mg/L，矿物汨油24．67mg/L，TN11．67mg／L，经潜流湿地处理后上述污染物分别减少了COD67．25％－80．77％，BOD580．02％－89．05％，石油类78．00％－88．45％，TN75．32％－82．43％，经检测，试验期间潜流湿地的渗透率为0．52m/d，在这种条件下潜流湿地的耐冲击负荷强，出水水质稳定。     

Treatment of a dyeing wastewater from a woolen mill using an A/O membrane bio-reactor

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Treatment of a dyeing wastewater from a woolen mill using an A/O membrane bio-reactor

An anaerobic/oxic membrane bioreactor (A/O MBR) was used for treatment of dyeing wastewater from a woolen mill.COD and color of the wastewater were 54-473 mg/L and 40-400 dilution time (DT) respectively. The ratio of BOD5/COD was less than 0.13. By the A/O MBR process, the average removal of COD, BOD5, color and turbidity was 82％, 96％, 71％ and 99％, respectively. The average COD, BOD5, color and turbidity of effluent was 37 nag/L, 0.8 mg/L, 40 DT and 0.44 NUT respectively. The effluent COD met the local standard of reuse water in Beijing, China. The average COD volume load of the anaerobic biological tank was 0. 0483 kgCOD/(m3·d) and that of the aeration tank of the MBR was 0. 3589 kgCOD/(m3·d). The sludge load of the MBR was 0.19 kgCOD/(kg· MLSS· d) on average and the maximum of that was 0.4 kgCOD/( kg· MLSS· d).The flux of the A/O membrane bioreactor could be remained at larger than 50 L/(h· m2· 0.1MPa). The results indicated that A/O membrane bioreactor has technical feasibility for treatment of woolen mill wastewater.     

唐山欧联豪门啤酒废水处理站设计

唐山欧联豪门啤酒废水处理站工程规模为 10 0 0 0m3/d。进水CODCr=2 0 0 0mg/L ,BOD5=10 0 0mg/L ,采用UASB反应器 生物接触氧化处理工艺 ,出水CODCr≤ 15 0mg/L ,BOD5≤ 6 0mg/L。     

一种垃圾渗滤液的处理技术

本文采用厌氧反应器UASB+膜生物反应器MBR+纳滤工艺处理垃圾填埋场废水,设计处理能力为100m3/d,在进水CODs:和BODs分别为10 000 mg/L和5 000 mg/L时,经处理后,出水CODc:和BODs分别为60mg/L和20mg/L,其去除率分别为99.4%和99.6%,且出水稳定,达到了<北京市水...     

高浓度阿维菌素生产废水治理与资源回收技术研究

采用预处理一厌氧水解－二段接触氧化工艺处理阿维菌素废水，在厌氧段停留时间为１０ｈ，好氧段停留时间为６ｈ条件下，厌氧好氧段ＣＯＤ总去除率达９１％，     

Ozonation of refractory chemicals in leachate with hydrogen peroxide

Nearly 97% of organic chemicals in Hong Kong leachate could be effectively removed by the UASB( upflow anaerobic sludge blanket) process followed by the fenton coagulation. The COD of leachate was lowered from an average of 12900 mg/L to 1440 mg/L after the UASB treatment, and was further lowered to 394 mg/L after the fenton coagulation. The remaining refractory residues could be further removed by ozonation with the addition of H2Oz. The ozonation for the supernatant of the fenton coagulation was most effective at pH 7-8, with the addition of 300 mg/L of H202, and 30 min of reaction. The final effluent contained only 85 mg/L of COD and 10 mg/L of BOD5. On the other hand, direct ozonation of UASB effluent lowered the COD to 905 mg/L and BOD5 to 103 mg/L. Ozonation improved the biodegradability of the organic residues, and also converted oart of oruanic-N in the leachate into NH3-N and NO3^- -N.     

膜生物反应器处理毛纺废水的中试研究

采用中试规模(10t/d)的厌氧-好氧膜生物反应器(A/O MBR)处理毛纺印染废水.当HRT为7h,进水COD、BOD₅分别为179～358mg/L和44.8～206mg/L,试验系统对COD、BODs、色度、浊度的平均去除率分别为92.1%、98.4%、60.7%、98.9%,出水水质浓度或指标值分别为20.2mg/L、1.6mg/L、25倍、0.51 NTU.出水水质指标达到建设部生活杂用水水质标准(CJ25.1-89).A/O MBR工艺处理毛纺印染废水技术可行、操作简单、易于管理,可为工业规模应用提供技术参考.     

Treatment of oilfield produced water by anaerobic process coupled with micro-electrolysis

Treatment of oilfield produced water was investigated using an anaerobic process coupled with micro-electrolysis (ME), focusing on changes in chemical oxygen demand (COD) and biodegradability. Results showed that COD exhibited an abnormal change in the single anaerobic system in which it increased within the first 168 hr, but then decreased to 222 mg/L after 360 hr. The biological oxygen demand (five-day) (BOD5)/COD ratio of the water increased from 0.05 to 0.15. Hydrocarbons in the wastewater, such as pectin, degraded to small molecules during the hydrolytic acidification process. Comparatively, the e ect of ME was also investigated. The COD underwent a slight decrease and the BOD5/COD ratio of the water improved from 0.05 to 0.17 after ME. Removal of COD was 38.3% under the idealized ME conditions (pH 6.0), using iron and active carbon (80 and 40 g/L, respectively). Coupling the anaerobic process with ME accelerated the COD removal ratio (average removal was 53.3%). Gas chromatography/mass spectrometry was used to analyze organic species conversion. This integrated system appeared to be a useful option for the treatment of water produced in oilfields.     

Treatment of oilfieid produced water by anaerobic process coupled with micro-electrolysis

Treatment of oilfield produced water was investigated using an anaerobic process coupled with micro-electrolysis (ME), focusing on changes in chemical oxygen demand (COD) and biodegradability. Results showed that COD exhibited an abnormal change in the single anaerobic system in which it increased within the first 168 hr, but then decreased to 222 mg/L after 360 hr. The biological oxygen demand (five-day) (BOD5)/COD ratio of the water increased from 0.05 to 0.15. Hydrocarbons in the wastewater, such as pectin, degraded to small molecules during the hydrolytic acidification process. Comparatively, the effect of ME was also investigated. The COD underwent a slight decrease and the BOD5/COD ratio of the water improved from 0.05 to 0.17 after ME. Removal of COD was 38.3% under the idealized ME conditions (pH 6.0), using iron and active carbon (80 and 40 g/L, respectively). Coupling the anaerobic process with ME accelerated the COD removal ratio (average removal was 53.3%). Gas chromatography/mass spectrometry was used to analyze organic species conversion. This integrated system appeared to be a useful option for the treatment of water produced in oil fields.     

厌氧-混凝工艺处理造纸厂终端废水试验研究

本文报告了用厌氧 -混凝工艺处理造纸厂终端废水的实验情况 ,在最佳实验条件下 ,废水从CODcr80 6 . 7m g/ L、BOD52 10 . 5 m g/ L、SS2 15 . 7m g/ L、OD4 650 . 35 0降至 CODcr6 1. 5 m g/ L、BOD52 7. 4m g/ L、SS17.3mg/ L、OD4 650 .0 11。实验结果表明对造纸厂终端废水的治理 ,本工艺是很有实用价值的一种方法