生物法处理玉米糖废水的研究

根据玉米糖废水的水质特点，选择厌氧－好氧主体工艺处理玉米糖废水。运行结果表明：在进水水质为CODCr≤10151mg/L，出水水质达到GB8979－1996《污水综合排放标准》二级标准。该处理工艺对冲击负荷能力强，运行稳定，操作简单，基建和运行费用较低。可推广应用地食品行业高浓度有机废水的处理。     

水解酸化-厌氧-好氧工艺处理罐头食品加工废水

罐头食品生产废水是易降解高浓度有机废水,根据废水的水质特点,采用水解酸化-厌氧-好氧法多级流程联合处理。运行结果表明,该工艺处理效果良好,工艺运行稳定,系统总COD去除率达95.6%;BOD5总去除率达98.6%;SS总去除率为93.3%;色度平均总去除率为94.6%。出水各项指标均优于《污水综合排放标准》(GB8978—1996)中二级标准的要求。     

含高盐量、高氨氮量有机废水处理工艺探讨

阐述运用蒸发结晶、碱性吹脱、铁碳微电解及生物接触氧化法处理含高盐量、高氨氮量有机废水的工程实例及理论依据.运行结果表明,该工艺切实可行,处理出水水质达到污水综合排放标准.     

SBR工艺处理酱菜废水的试验研究

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%。     

造纸废水深度处理技术现状及应用案例探析

文章在总结造纸行业废水来源及水质特征的基础上,归纳分析了造纸废水深度处理技术的实用方案,提出以膜技术为核心的深度处理及回用工艺,并总结了回用工艺运行过程中需重视的技术问题。     

环境工程专业特种废水处理课程教学讨论

课特种废水处理课是环境工程专业一门重要的工程性专业课,它能使学生做到在掌握不同种类废水的来源、水量水质特性的基础上,能根据废水的水量、水质特性提出适宜的处理工艺流程和参数.为学生今后在解决特种废水处理的科研、工程设计及运行管理等方面打下坚实的基础.基于此,从教学方法、教学手段及评价考核体系等方面对特种废水处理课程教学进行探讨,在满足环境工程专业培养目标的基础上,全面提高课程教学质量及学生学习兴趣.     

垃圾焚烧发电厂污水处理系统

针对垃圾焚烧发电厂产生的废水,采用间歇式活性污泥法(SBR)对其进行处理。工艺运行结果表明,出水水质达到排放指标,并取得较好的经济效果。     

荧光粉生产废水的加载-还原-协同絮凝工艺处理

彩显生产过程中,荧光粉废水水质水量变化幅度大,运行成本高,污染物排放量高．采用加载一还原一协同絮凝工艺处理荧光粉废水,工程实践表明,在处理效率、出水水质及运行成本、产泥率等方面都远优于传统工艺．该工艺出水的SS,CODcr,TCr,Cr＋6,产泥率及运行成本的平均值分别为0.7mg／L,16．1mg／t,9．7mg／L,1．3kg／m3,1．26元／m3,较原有工艺降低超过35％,其出水水质优于《城市污水再生利用城市杂用水水质》GB／T18921-2002标准,可回用作杂用水及景观水补水．     

水解酸化+双层填料接触氧化法处理织染废水

采用水解酸化 双层接触氧化法 气浮处理织染废水。当CODcr及BOD5的浓度为 15 0 0mg/L和6 0 0mg/L时 ,CODcr及BOD5的去处率分别达到 80 %和 90 %以上 ,出水水质达到国家废水综合排放 (GB8978- 96 )二级标准 ,处理费用为 0 .5 6元 /m3 ,该工艺具有节能 ,运行维护费用低 ,操作简便等优点     

微电解-酸水解-活性污泥法处理纺织印染废水

利用废铁屑微电解-活性污泥法工艺对纺织印染废水进行处理。该工艺处理印染废水效果好、投资少，色度、BOD5和CODcr除去率分别达到94％、90％和92％以上，处理后的水质达到GB4287—92纺织印染工业废水排放的一级标准。     

卡思卡特城堡

It is worthy of noting that, whilst Crookston Castle witnessed the earlier and happier portion of Mary's variegated life,     

不同的吃喝玩乐

一、吃和喝吃苹果 eat an apple, 吃药 take medicine,吃糖 have some sweets,吃饭 have one's meals,吃馆子 dine out,吃惊 be surprised/     

漏洞百出的教育

Many college freshmen arrive woefully unprepared to do college work, and as disadvantaged populations continue to grow, the share of the American work force that has made it through college is expected to plummet. Many experts blame that educational failure not just on high schools but also on colleges. School & College, a special report by The Chronicle, looks at efforts to fix the system. What reforms would better prepare students for college? What should schools and colleges be doing differently? How should state and federal officials help?     

只要努力,不要后悔

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.     

浅谈移民问题

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.     

Sister Carrie, an Adherent of Desires

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.     

Improvement of one-cycle controller by use of proportional integral differential controller

1.IntroductionOne-cyclecontrolmethod,whichwasproposedaboutonedecadeago[1],hasbecomeanattractivemethodinspecialfieldssuchaspowerfactorcorrection[2-6],switchingamplifiers[7,8],etc.Themainideaofthiscontrollerisbasedonintegrationofdiodevoltageinone-cycleandforcesittobeexactlyequaltothereferencevalue.Themainadvantageofthiscontrollerisitsrealtimeabilitytorejectthevariationofinputvoltage[1].Despitethisgreatability,ithasnogoodperformancesinrejectingofloaddisturbanceandfollowingreferencecommands.Espec…     

库克斯顿城堡

城堡, 是欧洲典型的建筑之一, 每个城堡都有一个美丽的传说或是一段历史。从本期开始, 我们将推出“城堡之旅”, 带各位读者去浏览、观赏欧洲各地的城堡, 开始一段文化与历史的旅途!     

The Reader Response Approach to Teaching of English Literature

During interview with English majors, it was found that a majority of students expressed disappointment with their experience of English literature classes. Students' dislike of learning English literature appears to be the major problem of teaching English literature in China. Reader response approach is a good way to solve this problem. In this paper, I explain the rationale behind the reader response approach, such as its origin, definition, features, assumptions, and strategies. Then I illustrate how reader response approach works as a teaching strategy by presenting several teaching models. At last I evaluate its usefuiness for teachers and present the advantages of reader response approach in Chinese context.