基于等标污染负荷法的造纸工业废水处理效果分析与污染源评价——以宜宾纸业为例

对宜宾造纸厂的生产概况、废水处理工艺、实际运行参数等进行了调查,并应用等标污染负荷法分析和评价了废水处理效率、污染负荷和主要污染物,为废水处理工艺改进、污染物质控制提供参考.研究结果表明:工业废水处理后p H、SS、BOD_5的浓度均达到国家排放标准限值,CODcr、色度两项超标,去除效率分别为51%、63%,CODcr等标污染负荷比最大44%,即为主要污染物.提出了具体的改进污水处理工艺的措施.     

微波化学工艺处理电镀废水的工艺原理分析

微波能够有效的对流体物质进行选择性加热(均匀加热),而且能够加快流体中的固液分离速度,在固液分离的过程中,起到迅速加温的作用,且无任何的二次污染.除此之外,微波还能够对吸波物质进行低温催化,总之,微波化学工艺能电镀废水处理的一下给技术革新,具有创新性、光谱性和突破性.而且微波化学工艺与传统电镀废水处理工艺相比,具有高效、实用、环保、节能、运行费用低等特性,值得推荐应用,基于此,本文在分析微波化学工艺的特点基础上,浅谈微波化学工艺在处理电镀废水时的工艺原理.     

柠檬酸有机废水生物处理过程中的试验探讨

柠檬酸生产有机废水处理目前比较成熟、可靠的工艺就是厌氧-好氧二级生化处理技术.通过对某柠檬酸生产企业有机废水处理过程中的试验探讨,探究了该处理工艺的优点及需要改进的方向,为柠檬酸生产企业对有机废水处理改造提供了依据.     

关于废水处理的一种生态设计技术研究——以汽车修配厂废水处理为例

文章以汽车修配厂废水处理为例,总结国内外该方法的长处与不足,结合目前国内汽车修配行业实际情况,提出采用混凝沉淀-生物接触氧化生态设计工艺处理汽车修配厂含油废水,并回用处理出水,实现清洁生产.同时结合某汽车修配厂具体排污情况,对该废水处理工艺进行了经济效益分析,从工艺和效益两个方面验证了其可行性.     

焦化废水处理中无机复合絮凝剂应用研究

综述了无机复合絮凝剂在焦化废水处理中的应用情况.无机复合絮凝剂在焦化废水处理中主要集中应用在预处理和深度处理阶段,研究多从絮凝剂投加量、废水p H值、絮凝时间及搅拌速度等方面入手,侧重于单因素对焦化废水处理效果的影响,缺少对絮凝剂制备工艺的优化及各因素间的交互影响研究.文章在阐述国内外已有研究成果基础上,从絮凝剂制备工艺、因素间的交互作用方面展望焦化废水处理中无机复合絮凝剂应用研究方向和前景.     

SBBR工艺概述及国内外研究进展

介绍了序批式生物膜反应器（SBBR）这种新型废水处理工艺,并对其具体的工艺原理、分类、工艺特点、运行流程和影响因素进行了简要概述。同时,还对其国内外研究及应用现状及有待发展的问题进行简要阐述,并指出随着该工艺的不断发展与完善,其必将拥有更加广阔的发展前景。     

新型厌氧反应器--IC反应器结构及应用研究

本文介绍IC反应器的基本结构和原理,并从工艺思想的角度对该反应器进行了研究,最后探讨该反应器在废水处理工程中的应用前景。     

冷轧酸碱废水处理工艺及其重要参数的设定和分析

介绍了本钢浦项冷轧薄板有限责任公司酸碱废水处理工艺并详细分析了各工艺点控制参数的设定。该工艺按照这些控制参数进行设定后运行,出水水质指标可以达到或优于国家规定排放标准。     

水解＋A／O法处理难降解石化废水的应用研究

通过实验研究探讨水解＋A／O法对石化废水的处理效果、处理机理和工艺适应性,为解决废水处理,寻求技术可行经济适用的处理方案。通过分析废水COD和氨氮等指标的变化规律,得出水解＋A／O工艺的有效运行控制参数,正确的指导运行,使石化废水达标排放,同时也为类似难降解废水处理的实际运行提供技术依据。     

新型厌氧反应器——IC反应器结构及应用研究

本介绍IC反应器的基本结构和原理，并从工艺思想的角度对该反应器进行了研究，最后探讨该反应器在废水处理工程中的应用前景。     

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.