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水解酸化-曝气生物滤池处理啤酒废水 总被引:7,自引:0,他引:7
采用水解酸化 曝气生物滤池处理啤酒废水 ,平均出水水质BOD≤ 2 5mg/L ,COD≤ 85mg/L ,达到《污水综合排放标准》(GB8978- 1996)一级标准。 相似文献
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对某润滑油生产废水处理项目进行提标改造,通过强化除油预处理、增加水解酸化提高可生化性、好氧生化处理改造为MBR工艺、增加臭氧氧化深度处理,形成了两级隔油-调节-破乳-两级气浮-水解酸化-MBR-臭氧氧化的组合处理工艺。实践表明,该组合工艺处理效果优良,出水水质稳定达到《石油炼制工业污染物排放标准》(GB 31570-2015)中的特别排放限值要求。COD和石油类分别从8 801、212 mg/L降低到34.71、0.25 mg/L,去除率分别为99.61%、99.88%。介绍了本项目总体技术方案,详细设计参数和实际运行效果,为同类项目提供借鉴和参考。 相似文献
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研究采用混凝、强化微电解、水解酸化和SBR组合技术处理造纸废水的效果。结果表明,废水经混凝处理、H_2O_2/MnO_2/微电解处理后,废水COD、SS、NH3-N、TP、BOD的去除率分别为88.23%、98.47%、86.78%、98.68%和82.56%,废水的可生化性由0.32提高到0.42;经水解酸化和SBR处理后,出水中COD平均质量浓度为85 mg/L,SS质量浓度为0 mg/L,NH3-N平均质量浓度为1.42 mg/L,TP平均质量浓度为0.1 mg/L,BOD平均质量浓度为30 mg/L。工程连续运行15d,进水中COD平均质量浓度为5 865 mg/L,出水中COD平均质量浓度为85 mg/L,COD总去除率为98.55%,出水达到废水一级排放要求。 相似文献
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汽车修理厂碱性含油废液和废水处理的试验研究 总被引:5,自引:1,他引:4
汽车修理厂清洗发动机零件时,排出的碱性含油废液和废水的COD浓度和含油量很高,排放前必须进行处理.本文在总结工程实践经验的基础上,提出了废液用氯化钙破乳、絮凝沉淀后回用;废水经破乳、絮凝沉淀、砂滤和活性炭吸附的处理工艺. 相似文献
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水解酸化-气浮-SBR工艺处理亚麻废水 总被引:16,自引:1,他引:15
亚麻废水是一种较难降解的有机废水 ,用单一的好氧生物法处理效果不好。采用水解酸化 气浮 SBR工艺处理亚麻废水 ,设计处理能力 10 0 0m3/d ,设计废水水质为 :COD 80 0~ 10 0 0mg/L ,BOD 4 0 0~ 5 0 0mg/L ,SS 2 0 0~ 30 0mg/L ,pH 7。在保证酸化水解调节池正常运行的条件下 ,COD去除率可达 2 5 %以上 ,再经气浮及SBR处理 ,COD去除率可达 85 % ,出水水质达标 相似文献
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氯硝柳胺生产废水处理工程实践 总被引:1,自引:0,他引:1
论述了络合萃取 -铁碳还原 -中和沉淀 -厌氧水解 -接触氧化 -过滤工艺处理氯硝柳胺生产废水的工艺流程、工艺参数和处理效果。处理设施运行监测结果表明 ,出水水质达到GB8978- 96中的一级排放标准。废水COD去除率平均为 98% ,BOD去除率平均为 95 % ,TP去除率平均为 99 6 % ,NH3-N去除率平均为 86 %。 相似文献
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山东某纸业集团有限公司采用水解酸化-延时曝气工艺处理造纸废水。工程实践表明,该工艺处理效果良好,运行费用较低,CODCr去除率达到85%,各项出水指标均达到GB3544-2001的二级排放标准。 相似文献
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Two-stage SBR for treatment of oil refinery wastewater. 总被引:2,自引:0,他引:2
A two-stage sequencing batch reactor (SBR) system was used for treatment of oily wastewater with COD and oil and grease (O&G) concentrations ranging from 1,722-7,826 mg/L and 5,365-13,350 mg/L, respectively. A suitable start-up protocol was developed using gradual increase in oily wastewater composition with methanol as the co-substrate. This strategy enabled a short acclimation period of 12 days for the sludge in the two-stage SBR to adapt to the oily wastewater. After acclimation, the 1st stage and 2nd stage SBRs were able to achieve COD removals of 47.0+/-2.4% and 95.3+/-0.5%, respectively. The 1st stage SBR was able to achieve 99.8+/-0.1% of O&G removal and effluent O&G from the 1st stage SBR was only 6+/-2 mg/L. The 2nd stage SBR was used to further remove COD in the effluent from the 1st stage SBR. The final effluent from the 2nd stage SBR had a COD concentration of 97+/-16 mg/L with no detectable O&G content. Thus, a two-stage SBR system was shown to be feasible for treating high strength oily wastewater to meet the local discharge standards. 相似文献
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水解-气浮-曝气生物滤池工艺在印染废水处理中的应用 总被引:15,自引:1,他引:14
采用水解 气浮 曝气生物滤池工艺处理印染废水的运行结果表明 :在原废水COD为830mg/L ,色度为 560倍 ,BOD为 2 90mg/L的条件下 ,其去除率分别为 82 % ,94 %和 93% ,出水达标排放。 相似文献
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The present study aimed mainly for the development of a wastewater treatment system incorporating enhanced primary treatment, anaerobic digestion of coagulated organics, biofilm aerobic process for the removal of soluble organics and disinfection of treated water. An attempt was also made to study the reuse potential of treated water for irrigation and use of digested sludge as soil conditioner by growing marigold plants. Ferric chloride dose of 30 mg/l was found to be the optimum dose for enhanced primary treatment with removals of COD and BOD to the extent of 60% and 77%, respectively. Efficient anaerobic digestion of ferric coagulated sludge was performed at 7 days hydraulic retention time (HRT). Upflow aerobic fixed film reactor (UAFFR) was very efficient in removals of COD/BOD in the organic loading rate (OLR) range of 0.25 to 3 kg COD/m(3)/day with COD and BOD removals in the range 65-90 and 82-96, respectively. Photo-oxidation followed by disinfection saved 50% of chlorine dose required for disinfection of treated effluent and treated water was found to be suitable for irrigation. The result also indicated that anaerobically digested sludge may be an excellent soil conditioner. From the results of this study, it is possible to conclude that the developed wastewater treatment system is an attractive ecologically sustainable alternative for sewage treatment from institutional/industrial/residential campuses. 相似文献
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榨菜废水的高含盐量和高氮磷对微生物有较强的抑制作用,处理难度大.以处理规模400 m3/d的重庆某榨菜厂废水处理工程为例,其进水COD 3 000~4 000 mg/L,BOD5 1445 mg/L,盐度1.5%~2.5%(以NaCl计),氨氮80~120 mg/L,总磷25~30 mg/L.通过驯化耐盐微生物为主体菌种,采用化学除磷-水解酸化-厌氧接触-接触氧化工艺进行处理,出水COD、BOD5、氨氮、总磷以及盐度平均分别为70.5 mg/L、14.9 mg/L、9.4 mg/L、0.46 mg/L以及1.53%,可以达到《污水综合排放标准》(GB8978-1996)一级标准. 相似文献
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某制药厂生产废水水质变化大,污染物浓度高,毒性大.采用气浮—兼氧-CASS工艺进行处理.实践表明,处理出水COD 450~650 mg/L,氨氮20~35 mg/L,BOD5≤100 mg/L,SS50~100mg/L,可达《污水综合排放标准》(GB 8978-1996)三级排放标准. 相似文献
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This paper presents the purification performance of 20 wastewater treatment plants with vertical reed bed filters (Macrophyltres), built between 1998 and 2003 by SAS Voisin, for communities of between 150 and 1400 PE. The first stage vertical reed bed (directly fed with raw wastewater by intermittent feeding) achieved high removal of SS, BOD and COD (mean respectively 96%, 98%, 92%). The second stage permitted compliance easily with effluent standards (SS < 15 mg/l, BOD < 15 mg/l, COD < 90 mg/l and mean TKN < 10 mg/l). Performance was not significantly influenced by variations of organic and hydraulic load, nor by seasonal variations. Rigorous operation and maintenance were required to obtain optimal performances. Another application of vertical reed beds is the treatment of septage (sludge from individual septic tanks). The results obtained on two sites operating for 2 and 3 years are presented. The first site achieved complete treatment of septage (solid and liquid fraction), the second permitted a pre-treatment for co-treatment of percolate with wastewater. 相似文献
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SBR technology is used to treat the supernatant from mesophilic anaerobic digestion of piggery wastewater. The novelty of the treatment consists in the use of a final coagulation/flocculation step inside the SBR cycle to reach the legal COD effluent standard. The pH changes introduced by the use of FeCl(3) do not affect the nitrifying activity. The SBR treatment includes a strategy to the control of oxygen supply and ammonia concentrations inside the digester to favor the biological nitrogen removal over nitrite, which makes the process more economical. The influence of several of these parameters on the AOB biomass activity is studied in this paper. 相似文献
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F G Wessman E Yan Yuegen Q Zheng G He T Welander B Rusten 《Water science and technology》2004,49(11-12):199-205
The Kaldnes biomedia K1, which is used in the patented Kaldnes Moving Bed biofilm process, has been tested along with other types of biofilm carriers for biological pretreatment of a complex chemical industry wastewater. The main objective of the test was to find a biofilm carrier that could replace the existing suspended carrier media and at the same time increase the capacity of the existing roughing filter-activated sludge plant by 20% or more. At volumetric organic loads of 7.1 kg COD/m3/d the Kaldnes Moving Bed process achieved much higher removal rates and much lower effluent concentrations than roughing filters using other carriers. The Kaldnes roughing stage achieved more than 85% removal of organic carbon and more than 90% removal of BOD5 at the tested organic load, which was equivalent to a specific biofilm surface area load of 24 g COD/m2/d. Even for the combined roughing filter-activated sludge process, the Kaldnes carriers outperformed the other carriers, with 98% removal of organic carbon and 99.6% removal of BOD5. The Kaldnes train final effluent concentrations were only 22 mg FOC/L and 7 mg BOD5/L. Based on the successful pilot testing, the full-scale plant was upgraded with Kaldnes Moving Bed roughing filters. During normal operation the upgraded plant has easily met the discharge limits of 100 mg COD/L and 50 mg SS/L. For the month of September 2002, with organic loads between 100 and 115% of the design load for the second half of the month, average effluent concentrations were as low as 9 mg FOC/L, 51 mg COD/L and 12 mg SS/L. 相似文献