化学混凝-UASB工艺处理城市生活污水

UASB在处理城市生活污水中有着广泛的应用前景；但在运行过程中，未充分降解的悬浮物易在UASB反应器中堆积，导致已颗粒化的厌氧污泥的活性降低，影响处理效果。作者采用化学混凝预处理法来探讨对UASB的运行影响。通过实验得知化学混凝实现了去除进水中的SS，在FeCl3的投入量为70mg／L，HRT为2h时，UASB的COD去除率达50％～60％。     

高取代度季铵型阳离子化玉米淀粉在处理城市生活废水中的应用

研究了以聚合硫酸铁(PFS)为主凝剂、高取代度季铵型阳离子化玉米淀粉(HQCC)为助凝剂处理城市生活废水的各种影响因素．实验结果表明：PFS和HQCCS分别以200mg／L和10mg／L的复配浓度、pH值接近中性时混凝效果为最佳，CODCr去除率达到80％，色度与浊度去除率均达99％以上．     

Fenton试剂-石灰法处理土霉素废水实验研究

本文首次采用Fenton试剂—石灰法处理土霉素废水?结果表明，在适宜条件下对不同浓度的废水进行处理，CODCr去除率可达71％以上，废水的可生化性(BOD5/CODCr)由0．1提高到0．4以上；实验还对土霉素纯品进行处理，通过对处理前后的UV—Vis光谱分析证实了彻底去除土霉素是废水可生化性提高的主要原因。     

2005年第三季度部分城市劳动力市场职业供求状况

2005年第三季度，全国103个城市报送了本市劳动力市场职业供求状况信息。这103个城市分布在全国各大区域，拥有市区人口1.45亿人，占全国地级以上城市市区人口的55.9％；拥有市区从业人员（含城镇个体劳动者）5310万人，约占全国地级以上城市市区从业人员的61％。     

自制聚合硫酸铁处理高色度印染废水的实验研究

利用自制聚合硫酸铁处理高色度印染废水，研究了最佳实验条件。该方法工艺简单，药剂成本低，废水的COD去除率达70％以上，脱色率达98％以上，出水水质达到了国家印染废水排放二级标准。     

2006年第三季度部分城市劳动力市场职业供求状况

2006年第三季度，中国劳动力市场信息网监测中心对全国100个城市的劳动力市场职业供求信息进行了统计分析。这100个城市分布在全国各大区域，拥有市区人口1．42亿人，占全国地级以上城市市区人口的54．7％；拥有市区从业人员（含城镇个体劳动者）5081万人，约占全国地级以上城市市区从业人员的58．4％。     

2006年第四季度全国101个城市劳动力市场职业供求状况

2006年第四季度，有关部门对全国101个城市的劳动力市场职业供求信息进行了统计分析。这101个城市分布在全国各大区域．拥有市区人口1．49亿，占全国地级以上城市市区人口的57．4％；拥有市区从业人员（含城镇个体劳动者）5253万人，约占全国地级以上城市市区从业人员的60．3％。[第一段]     

化学混凝法处理高色度染料废水的研究

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。     

UASB工艺处理木薯酒精废液生产运行发现

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．     

水果废水处理的光合菌、EM法研究

利用光合细菌(PSB)和有效微生物群(EM)二步法处理水果废水。研究结果表明：废水中CODcr去除率为98％；SS和S^2-去除率分别为81％和71％。     

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?     

Western and Eastern culture differences in commercial field

The communication of people partially is the communication of cultures. Culture has a direct effect on international commercial activities in all aspects. Different conceptions about time, space, equality, law and the like, lead people to deal with things in different ways. So to know cultures of the counterpart is to facil-itate our enterprises so as to have a smooth and successful communication in commercial activity.     

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.     

风的曲线

Rosco and I wait for the fishermen to return.I sit at a wooden bench near the store at Mt.Baker Resort and watch the clouds change shape. Rosco has my belt around his neck and an eight foot tow chain hooked to a tree. Dogs must be on a leash. Ducks and rabbits are loose.     

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…