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Through researching the mechanism of biological nitrification and denitrification and actual project application of the technology and related literature materials, the obtained results are as follows:(1) Anoxybiosis is effective to the removal of COD; after the anoxic process, BOD/COD of the outflow increases, it shows that the degradation ability of wastewater is improved; anoxybiosis is insensitive when shock loading of inflow wastewater varies greatly;(2) It is demonstrated by the operation of inoculation and cultivating that biofilm takes two weeks to succeed in cultivating on packings and the removal ratios of NH3-N and COD get 50% and 70% respectively, when gas-water ratio is 6:1, HRT is 7.3 hour, water temperature is above 15°C;(3) It is demonstrated that gas-water ratio, hydraulic loading, HRT, temperature, pH etc are important factors which influence the removal effect of pollutants, when the gas-water ratio is 6:1, hydraulic loading is about 0.38kgNH3-N/m~3.d, water temperature ranges from 15°C to 27°C, pH ranges from 7.5 to 8.0, the BIOFOR removal effect of pollutants is the best;(4) The operation indicated that, this technology has strong ability of nitrification and denitrification; it has extremely vital significance for reducing the water body eutrophication;(5) It is confirmed the feasibility and the usability of preanoxic-BIOFOR process to treat L-lactic acid production wastewater. The experiment indicated that the treatment effect of this technology is very good and also shows that the technology has many advantages, such as small volume, high treatment efficiency, good effluent quality and strong endurance to load variation, this technology is a new and economical wastewater treatment process.
通过对生物脱氮机理的研究和该组合技术的实际工程应用,并结合有关文献资料,取得如下结论:(1)预缺氧池对L-乳酸生产废水中的COD去除具有一定的效果;废水中难降解的高分子物质经过缺氧工段分解为易于氧化降解的物质,浮状有机物在水解菌的作用下,将不溶性有机物水解为溶解性物质;预缺氧池具有较强的抗冲击负荷能力;(2)BIOFOR接种挂膜过程表明:HRT为7.3h、气水比为6:1、水温保持在15℃以上,经过半个月生物膜即以形成,NH_3-N和COD的去除率分别达到50%和70%左右;(3)研究表明:气水比、水力负荷、HRT、温度、pH等是影响污染物去除效率的重要因素,在气水比为6:1,NH_3-N容积负荷为0.38kgNH_3-N/m~3·d,温度在15℃-27℃,pH在7.5-8.0之间的条件下,BIOFOR对污染物的去除效率达到最佳;(4)运行表明,该组合技术具有较强的脱氮能力,对于减少水体富营养化具有十分重要的意义;(5)经过半年多实际工程的现场调试与运行,验证了利用预缺氧—BIOFOR组合工艺处理L—乳酸生产废水的可行性和实用性,得出该组合技术具有占地面积小,处理效果好,运行费用省,耐冲击负荷能力强等优点,是一项新型、经济的污水处理技术。
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Staff are always friendly and very attentive. its a shame the hotel in not on the beach and the road can be a little noisy but the shuttle service to the beach and rooms is excellent and their private beach area with great double sunbeds, hammocks, 4 posters and beanbags are undoubtedly the best on great surin beach and all well spaced out and with great service from the beach staff.
员工们总是很友好,很用心,真遗憾,酒店没有在海滩上,因为路上有点吵,但是到海滩的班车服务很不错,房间也很棒,他们的私人海滩区有着非常好的双人太阳床,吊床,四张大海报和豆袋,毫无疑问是很棒的素林海滩上最好的。
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Different kinds of flocculants have different capabilities. The flocculants produced by Aspergillus parasiticus is not steady for heat. The flocculating effect is best at acid conditions, and it is not acute for Ca〓. The flocculant can decolorize soluble dyestuff, even the active gorgeous red X-3B which is difficult to be decolorized, the decolor rate is 62. 1%. The flocculant produced by A-9 is steady for heat. It can flocculate Gaolin suspension well without synergistic effects of CaCl〓, and the dose is only 0.05ml/L. The obvious character of A-9's medium cultured for 3days is very viscosity, and viscosity is a mark for microorganism producing microbial flocculants.
不同的微生物絮凝剂具有不同的性能,寄生曲霉产生的絮凝剂对热不稳定,在酸性条件下絮凝效果好,对Ca〓不敏感,该絮凝剂对可溶性染料具有良好的脱色性能,即使是最难脱色的活性艳红X-3B,脱色率也达到62.1%。A-9产生的絮凝剂对热稳定,絮凝高岭土悬浮液时用量小,仅为0.05ml/L,且不需添加CaCl〓等助凝剂,明显优于其它微生物絮凝剂。A-9菌株培养3天的培养液的明显特征是粘性高,试验发现培养液的粘性与微生物絮凝剂性能有较好的对应关系,因此培养液的粘性可以作为微生物产生絮凝剂的重要标志。
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The research results showed that: The accuracy of dimidiate pixel model is better than that of the experiential model during the vegetation retrieval.The curve degree of the cubic curve fitting is the best during the three built experiential models, but the experiential model is very simple and used widely.
研究结果表明:植被盖度反演中,像元二分模型的精度高于经验模型的精度,在建立的三个经验模型中,又以三次拟合曲线的拟合度最高。
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Result shows that the baffle of burner has very little influence on the total resistance characteristic; both the speed of rich side and lean side are affected by the angle of burner as a whole, furthermore, the lean side is influenced more greatly; the separation performance could be enhanced with the increase of burner's angle and the best separation effect could be acquired when the three baffles are dissymmetrically arranged.
结果表明,燃烧器挡板角度的调整对燃烧器的总体阻力特性影响很小;燃烧器挡板偏转对于燃烧器整体以及浓淡两侧的气流速度都有一定的影响,且对淡侧影响较大;燃烧器的浓淡分离效果随挡板偏角的增加而显著增加,且三挡板非对称布置的浓淡分离效果最好。
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Results: a In the negative control group, spontaneous chromosome aberration and micronucleus rated the mice's were very low; in the positive control group, chromosome aberration and micronucleus rate of the mice's were highest. b Before cyclophosphamide intoxation, when the four kinds of vegetables and hilts juice were preventively irrigated into the mice's stomachs respectively, the chromosome aberration and micronucleus rate in the negative control group were lower than these in the positive control group (P.05); but after intoxation, when the four kinds of vegetables and fruits juice were therapeutically irrigated into the mice's stomachs respectively, the chromosome aberration and micronucleus rate were similar with the result above mentioned . c Acing the four kinds of vegetables and fruits, sea-buckthorn lad the best preventive and curative effects.
结果:a在阴性对照组中,小鼠自发的染色体畸变率和微核率极低;在阳性对照组中,小鼠染色体畸变率和微核率最高。b在环磷酰胺染毒之前,分别将4种蔬菜水果汁给小鼠进行预防性灌胃,其染色体畸变率和微核率均比阳性对照组低(P.05);在染毒之后,分别将4种蔬菜水果给小鼠治疗性灌胃,其结果与上述实验结果相似。c在4种蔬菜水果中,以沙棘的预防和治疗效果为最好。
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The author comes to some conclusions as follow: The Khanate of Kipchak kept the submissive relation to the house of the grand khan and supported the supreme khan of Mongol Empire in the inner politics and the policy to the outside, which gave certain supports to the early communication in the Mongol Yuan dynasty; The Khanate of Kipchak should account for the stop of the communication caused by the foundation of the Khanate of Ogotai which had been supported by the Khanate of Kipchak during the period of the reign from Berke to Mangu Timur; The short-time stop of the communication was also Mongolian central government"s tragedy. The relationships of the Khanate of Kipchak to Yuan dynasty began to become normal during the course of the reign of Tuda Mangu ,Tula-buqa and Toqatai khan, in which the Khanate of Kipchak gave certain devotions to "peace" of the Mongol Khanates. Their relations had been best after the separation of Mongol Empire during the time of ozbeg and Janibeg"s reign which was. the rush hour of our economic and cultural intercourses with the Khanate of Kipchak and other west countries. The development of the relationships to Egypt accelerated the intercourses between this two countries, which indirectly widened the ways of the Sino-Arab communication in the economy and cultures. The relations to Ire Khanate had been very bad for a long time. This stopped the convergence of the Steppe Silk Roads and the Oasis Silk Roads. In other side, this helped the intercourses between Ire Khanate and Christian Europe.
本文认为,蒙古帝国时期,无论在内政还是外交方面,钦察汗国都维护着蒙古大汗的权威,保持着与蒙古大汗廷的臣属关系,这为蒙元早期中西经济文化交流需要的条件做出了一定贡献;别儿哥至忙哥帖木儿统治时期,钦察汗国应对因窝阔台汗国的崛起而导致的中西交通的阻断负一定责任,但这同时也是蒙古中央政府的悲哀;脱脱蒙哥至脱脱统治时期,两国关系开始逐渐恢复,钦察汗国为蒙古诸汗国的&约和&贡献了自己的力量;月即别和札尼别统治时期是两国关系的最密切时期,也是双方经济文化交流和中西交通的高峰期;钦察汗国与埃及关系的发展,一定程度地拓宽了中阿经济文化交流的渠道;钦察汗国与伊利汗国关系恶化和长期的紧张,一方面阻碍了草原丝路与绿洲丝路的交汇,另一方面促进了伊利汗国与欧洲的经济文化交流。
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The 2nd, be based on these platform to still have what what didn't a lot of demand convey good, perhaps convey very messily, we look again be based on this platform to have what application, what application is most attractive, of the demand that represents the mostest person, we look inside it is which group, the which person that do poineering work has latent capacity to do this best most, each process extremely hardships, because of the competitor countless, person of the same trade countless, we are here the person that the face goes searching what a few have tenacity most to do poineering work helps him.
第二个,基于这些平台还有什么很多需求没有表达好的,或者表达得很零乱的,我们再看基于这个平台有哪些应用,哪些应用是最有魅力的,代表最多数人的需求的,我们看看里面是哪个团队,哪个创业者最有潜力把这个做得最好,每一个过程都极其艰辛,因为竞争对手无数,同行无数,我们在这里面去寻找一些最有韧性的创业者帮他一把。
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It's very difficult to accurately determine the mechanics parameters of the caves, the boundary and initial conditions, the best construction scheme and support parameters before the caves are excavated, so there are a lot of blindness, diseconomy and hidden risks in the predesign of the caves.
由于在地下洞室开挖之前较准确地确定围岩的地质条件及相关的基本参数往往是很难的,故开挖方案和支护参数初步设计也存在许多盲目性,不经济性或安全隐患。
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By analyzing soil quality of 4 kinds of land use types in Kalamay agriculture development area according to principal component analysis, we draw the conclusions: nature shrub tree land is affected little by mankind, a great deal of organic matter return to soil every year, and root system can improve soil physical quality, can absorb salt from soil, so the soil quality of nature shrub tree land is the best; the soil quality of farmland is better than the soil quality of manpower Tamarix Bulrush land, which may be reasoned that man make for soil quality by irrigation to exclude salt and fertilizing organic muck in the earlier oasis digging up period. Soil physical qualities of tree land get harden and worsen for flooding irrigation, furthermore climate in Kalamay is dry and rainless , the other irrigation is very long time after the former one, so soil get harden severity and result soil physical quality get worse and worse.
利用主成分分析法分析新疆克拉玛依农业开发区四种土地利用方式下的土壤质量,得出:天然灌木林地,受人为影响较小,每年有大量有机物质返还土壤,且天然灌木的根系可以很好的改良土壤的物理性质,同时所选天然灌木林灌木多是耐盐碱并且本身又具有吸收积累来自土壤的盐分,土壤质量最好;农田受到的人为影响最大,但农田综合得分却好于人工柽柳芦苇地综合得分,这可能是由于在开垦初期的绿洲农田,受到了人们灌水压盐及增施各种有机无机肥料等有利于土壤质量提高的措施所致;乔木林地,由于人们用大水漫灌的方式灌溉,致使林地土壤变得板结,土壤物理性质下降,加上克拉玛依地区气候干燥少雨,一次灌溉后较长时间后才有下一次灌溉,致使土壤理化性质恶化,土壤质量不高。
- 推荐网络例句
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Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".
歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车,和一双合并为一移交&整个lotta爱&。
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This is Kate, and that's Erin.
这是凯特,那个是爱朗。
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Articulate the aims, objectives and key aspects of a strategic business plan.
明确的宗旨,目标和重点战略业务计划。