UASB+SBR工艺处理山梨醇废水

介绍UASB SBR法处理山梨醇废水的工程应用,采用的工艺简单,占地面积小,运行费用低。1年多的运行表明,处理后的各项指标均达到国家二级排放标准。     

UASB处理养猪废水条件下进水浓度对污泥颗粒化的影响

通过进行废水浓度变化对污泥颗粒化影响的试验,发现：颗粒直径随进水浓度的上升而增大,受传质过程所能进入颗粒内部的营养量所控制.应根据COD去除率的情况适时提高进水浓度,及时地随微生物数量的增加补充营养,促进污泥颗粒化;避免了浓度变化太快引起细菌生长过快,污泥结构松散,沉降性能下降及COD去除率和产气率降低.     

厌氧生物处理高浓度有机废水回收能源技术和评价

一、厌氧生物处理高浓度有机废水回收能源技术厌氧生物处理高浓度有机废水技术是一项颇有潜力的能源化技术,它不需充氧,能耗低,运行费用低,而能获得大量的能源-沼气.厌氧生物处理技术覆盖面宽,在食品、医药、饮料、化工、造纸等行业都能利用此技术处理高浓度有机废水.     

UASB处理污水现状及效果分析

说明UASB反应器的基本构造和工作原理,以及现阶段对其启动的主要研究方向问题,全面介绍UASB的应用现状．对其处理各种废水效果进行分析,并对其运行处理过程的一些问题提出自己的看法,总结UASB下一步的发展方向。     

厌氧技术——UASB处理工业废水的研究现状及发展趋势

介绍厌氧生物技术、UASB反应器的发展及应用现状,同时阐述UASB的机理、优缺点、主要影响因素等,最后,简要介绍UASB组合工艺的应用及UASB发展趋势与应用前景.     

猪场废水厌氧处理控制条件研究

阐述采用静态发酵进行猪场废水厌氧生物处理的运行性能试验,指出温度、pH、volatile fattyacids(VFA)对处理性能的影响。结果表明采用厌氧处理猪场废水对废水的COD去除有较好的效果,COD去除率最高可达76.78%,COD降解较快。研究温度,氨氮对厌氧消化微生物菌群的生长代谢以及VFA和产气量的关系。     

喀麦隆啤酒废水厌氧生物处理的研究

为了经济有效的控制喀麦降啤酒厂的有机废水污染,选用上流式厌氧污泥床（UASB）反应器,进行了常温厌氧生物处理的试验,结果表明,当地平均气温22．6℃,足以维持反应器的正常工作,但应采取措施降低温度的昼夜波动,糖化废水,发醇废水和啤酒过滤废水混合处理的效果优于各自单独处理,处理混合废水时,适宜的进水COD浓度为11000mg/L左右,适宜的容积COD负荷为12.50g/(L.d),适宜的水力停留时间为1天,在此条件下,COD去除率可达89％以上,容积COD去除率11.76g/(L.d),容积沼气产率4.06L／（L.d),试验证实,采用常温USASB工艺是可行的。     

制药废水处理中UASB的两种启动方式比较

对UASB反应器两种启动方式作了比较研究。结果表明采用混合废水和制药废水启动均能达到预期的目的；但采用混合废水启动可缩短23％的时间。生产中选用何种启动方式应因地制宜。     

氯霉素生产废水厌氧生物处理的研究

对氯霉素生产废水的厌氧生物处理作了研究,结果表明：（１）氯霉素生产废水的平均ＣＯＤ浓度高达３０６４８ｍｇ／Ｌ,平均ＢＯＤ５的浓度仅为７７１９ｍｇ／Ｌ,ＢＯＤ５／ＣＯＤ比值为０．２５３。从ＢＯＤ５／ＣＯＤ比值和降解动力学来评定,氯霉素生产废水属于生物处理可行性较难的工业废水。（２）石灰兼备中和酸性与去除一定量ＣＯＤ的双重作用,可用于该废水的预处理。（４）反应器的运试结果良好：平均水力停留时间１．００     

Comparative performance of a UASB reactor and an anaerobic packed-bed reactor when treating potato waste leachate

The results presented in this paper are from studies on a laboratory-scale upflow anaerobic sludge blanket (UASB) reactor and an anaerobic packed-bed (APB) reactor treating potato leachate at increasing organic loading rates from 1.5 to 7.0 g COD/1/day. The hydraulic retention times ranged from 13.2 to 2.8 days for both reactors during the 100 days of the experiment. The maximum organic loading rates possible in the laboratory-scale UASB and APB reactors for stable operation were approximately 6.1 and 4.7 g COD/l day, respectively. The COD removal efficiencies of both reactors were greater than 90% based on the total COD of the effluent. The methane yield increased with increasing organic loading rate up to 0.23 l CH₄/g COD_degraded in the UASB reactor and 0.161 CH₄/g COD_degraded in the APB reactor. The UASB could be run at a higher organic loading rate than the APB reactor and achieved a higher methane yield. Signs of reactor instability were decreasing partial alkalinity and pH and increasing amounts of volatile fatty acids. The study demonstrated the suitability of the UASB and a packed-bed reactor for treating leachate from potato waste.     

ADM1 modeling of UASB treating domestic wastewater in Nepal

The Anaerobic Digestion Model 1 (ADM1) was applied to the anaerobic digestion process in an Upflow Anaerobic Sludge Blanket (UASB) reactor treating domestic wastewater. It was evaluated based on data from a 250 L pilot scale reactor. The wastewater influent degradable characteristics and Sludge Retention Time (SRT) were established by several trial and errors simulation to establish appropriate values for parameters not measured experimentally. The model was further verified against varying load experimental results to ensure its usefulness for a wide range of relevant loads. The best fit was obtained using 60 d SRT and parameters recommended for mesophilic conditions, with average experimental values within 10% of the simulated results. The model gave a good estimation of reality and could be applied for feasibility analysis, design and operation of full-scale small plants to be used in rural areas. Kathmandu University (KU) domestic wastewater treatment plant simulation was used as example of such. It showed that a reactor volume of about 4 m³ (6 h HRT) would give reasonable reactor performance with 1.7 m³/d biogas production.     

以模拟有机废水为基质的单池微生物燃料电池的产电性能

利用自制单池微生物燃料电池,以破碎厌氧颗粒污泥上清液接种,以葡萄糖模拟废水为基质,成功获得了电能。含有质子交换膜的微生物燃料电池经过206h的连续运行,最高功率密度达到了141.5mW/m2,库仑效率最大为6.9%;不含质子交换膜的微生物燃料电池具有更好的产电能力,其最高功率密度为269mW/m2,库仑效率为6.6%;扫描电镜观察发现,阳极表面的产电细菌以一种短杆菌为主,在质子交换膜表面的细菌则以椭球菌为主。     

太阳能多相光催化法在废水处理中的应用研究评述

概述了光催化反应动力学研究进展和阻碍太阳能多相光催化工业应用的主要问题及其解决途径。现有的规模化应用表明，太阳能多相光催化法比传统方法处理成本低，研制开发高活性光催化剂、优良的载体、高效太阳能反应器是推动其工业化应用的关键。