共查询到20条相似文献，搜索用时 125 毫秒
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采用小型动态厌氧反应器(UASB)法和直接混凝两种方法对生物制药产生的废水进行预处理试验研究。结果表明:针对COD cr浓度为18000mg/L的废水,经USBA系统20小时处理,排放水质能达到COD cr≤5000mg/L以下。 相似文献
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论述了总有效容积2000m3的新型UASB装置,在中温条件下处理高浓度木薯酒精废水的启动运行和污泥含量控制的过程．当反应器稳定运行时,容积负荷可达7kgCOD／（m3·d）,水力停留时间为2d,污泥保持量在30％-41;％,COD去除率达95％以上,出水COD小于500mg／L． 相似文献
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啤酒厂厌氧池(UASB)的调节与恢复 总被引：1，自引：0，他引：1
针对某啤酒厂污水处理过程中使用的升流式厌氧池(UASB)进行了调节与恢复,通过监测厌氧池的pH与COD等数据找出UASB反应器处理效果差的原因,然后对三相分离器、布水管等进行调整,并二次启动厌氧池,恢复了UASB反应器的处理功能. 相似文献
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近年来,有机污水处理技术的应用越来越广泛,尤其是高、中浓度有机污水处理领域。UASB(upflow anaerobic sludge blanket technique)污水处理技术,即上流式厌氧污泥床污水处理技术,主要用于处理高浓度有机废水。该技术是荷兰学者Lettinga等人在1980年提出的,它具有结构简单、负荷率高、水力停留时间短、能耗低和无需污泥回流装置等特点。目前,国外投入运行的生产性试验都取得了较好效果,投入运行的生产性装置已达数百座。国内在应用UASB反应器处理有机工业废水方面也做了大量的试验研究工作,总的来看,工业性生产装置建造的数量有限,尤其在工程实践中如何提高UASB反应器的处理效果、使设备稳定运行等方面的经验不多。 相似文献
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机械搅拌UASB反应器处理高浓度有机废水的研究 总被引：3，自引：0，他引：3
本文以实验为根据,论述了机械搅拌UASB反应器处理高浓度有机废水的成功启动过程。本实验在去除率达到50%后提高负荷,每次提高负荷的幅度为前次负荷的20～30%。实验历时60天,COD负荷达到10.88kg/(m3?d)时去除率达到70%,大大缩短了启动时间。 相似文献
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化学混凝法处理高色度染料废水的研究 总被引：2，自引：0，他引：2
夏平 《湖州职业技术学院学报》2003,1(4):81-84
高色度酸性蓝黑10B、酸性橙Ⅱ染料废水经过多次混凝-活性炭吸附组合工艺的处理，其色度和COD的去除率都在99％和96％以上，并对影响脱色的因素及其控制条件进行了试验研究，处理后各项指标均达到国家排放标准。 相似文献
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《海外英语》2007,(4):36
There are numbers of crossroads on our long and unpredictable life journey where we totally have no idea about which direction to choose. No matter what our decision is, we should not turn back, but face the music and go ahead instead. I am this kind of girl who always does try without regretting, one example is how I dealt with my love. 相似文献
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Migration occurs behind a variety of reasons and has a great effect on the whole world. People may migrate in order to improve their economic situation, or in order to escape civil strife, persecution, and environmental disasters. The impact of migration is complex, bringing both benefits anddisadvantages. This paper briefly talks about the causes of migration, the allocation of benefits, and the ways in which individual countries and the international community deal with this important subject. 相似文献
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Sister Carrie is one of the most controversial characters in American literature.Thought as a "fallen woman" firstly,she was defined as a "new woman" by some critics later. However, by digging into the motivaton behind the whole process of Carrie's "success", the relationship between Carrie and her creator (the author), the social conditions of then American, it can be found that Carrie has never been free-standing on her thought and she has never found her real-sdf even after becoming a famous actress. In a society dominated by mass consumerism Carrie is only an adherent of her own desires. She also is a representative of all those country girls flooded into cities, a symbol and a sacrifice of the urbanization of America in a time countryside was overcome by cities. 相似文献
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RUZBEHANI Mohsen 《重庆大学学报(英文版)》2004,3(1):20-25
1.IntroductionOne-cyclecontrolmethod,whichwasproposedaboutonedecadeago[1],hasbecomeanattractivemethodinspecialfieldssuchaspowerfactorcorrection[2-6],switchingamplifiers[7,8],etc.Themainideaofthiscontrollerisbasedonintegrationofdiodevoltageinone-cycleandforcesittobeexactlyequaltothereferencevalue.Themainadvantageofthiscontrollerisitsrealtimeabilitytorejectthevariationofinputvoltage[1].Despitethisgreatability,ithasnogoodperformancesinrejectingofloaddisturbanceandfollowingreferencecommands.Espec… 相似文献
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Rajesh Kanoi 《海外英语》2007,(1):52
Today, Sunday morning, I sit thinking and typing at my computer. My thoughts are in my homeland, India and my body is in China. The body is here and mind there for a good reason. Mr. Hu is president and I am resident and both are in each other's countries (what a difference the absence of one small letter makes!). Mr. Hu will return in a few days and I will stay on longer. 相似文献
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正A One day a pig went to the stable(马棚)to see his good friend,an oldhorse,and was going to stay there forthenight.Night came and it was time forsleep.The pig went into the straw heap(稻草堆)and lay comfortably.A longtime passed,but the horse was stillstanding there and did not move.Thepig asked the horse why he did not go tosleep."Standing like this is the begin-ning ofsleeping,"answered the horse. 相似文献
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《今日中学生》2014,(9)
正1.Any fool can count the seeds in an apple.Only God can count all the apples in one seed.2.Happy families are all alike;every unhappy family is unhappy in its own way.3.Memories are the key not to the past,but to the future.4.Sometimes in the dark you see what you want to see.5.There is a great difference between 相似文献
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《重庆大学学报(英文版)》2014,(2)
正Scope and Policy The Journal of Chongqing University-English Edition(JCQU-E)is a peerreviewed journal publishing research articles in multiple disciplines of science and technology,covering civil and environmental engineering,chemical engineering,biotechnology,mechanical and electrical engineering,computer and data processing,mining,metallurgy,materials science,and interdisciplines thereof. 相似文献