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1.
内电解-混凝-生化工艺处理长毛绒染色废水的试验研究   总被引:11,自引:0,他引:11  
进行了用内电解-混凝土-生化工艺对长毛染色废水处理试验研究,结果表明:该工艺对可生化性很低的废水COD和色度具有较高的去除率,而且投资省,运行费用低、操作简便、在原水CODCR为400-700mg/L时,出水CODCR低于100mg/L;原水色度为200-300倍时,出水色度低于50保。  相似文献   

2.
利用钢厂废弃物处理印染废水的探讨   总被引:2,自引:0,他引:2  
利用钢厂废弃物-瓦斯灰处理剂治理印染废水。该方法以电化学作用为主,兼有还原脱色、混凝吸附等机制。试验结果表明:该法处理后的水、出水COD可降至100mg/L以下,去除率达87%以下,色度低于50倍,脱色率达95%以上,水质清澈透明,各项指标均符合国家排放标准。  相似文献   

3.
光合细菌处理高浓度制革废水的研究   总被引:10,自引:0,他引:10  
该文提出采用三级内装软性纤维填料的生物接触氧化槽连续处理工艺,利用光合细菌对制革废水中的高浓度有机废水进行处理。通过试验,确定的工艺条件为进水COD浓度8000kg/L左左,接种活性污泥进行24h可溶化处理,白天自然为光照、夜间人工光照或黑暗,间歇曝气造成瘘性好氧条件(DO0.5-20mg/L),PSB处理时间为72h,连续处理小试结果COD和S^2-的平均去除率分别为90.4%和98.0%,BO  相似文献   

4.
本文利用AB法废水生物处理技术进行治理高浓度石油化工废水的试验研究,通过AB法和普通活性污泥法处理高浓度石油化工废水对比性试验,系统地考察了两种方法的进水负荷、耐冲击负荷、活性污泥性状和处理效率等指标。研究结果表明:AB法在进水COD为1600mg/L,BOD5为800mg/L,苯酚浓度为600mg/L,总容积负荷为12kgCOD/m^3day的条件下,COD去除率为96.5%,BOD5去除率达9  相似文献   

5.
聚铁处理印染废水实验研究   总被引:10,自引:1,他引:10  
探讨聚铁(PFS)的投加量及体系pH值对印染废水CODcr、色度、浊度去除率的影响.实验表明,在pH=5~11,投加量1.0~1.8mL·L-1时,PFS对含分散和碱性染料印染废水的处理效果较好.废水CODcr去除率在70%以上,色度和浊度去除率也达80%以上.  相似文献   

6.
利用微生物快速挂膜技术治理糖果废水的研究   总被引:2,自引:0,他引:2  
利用微生物快速挂膜技术对糖果废水治理进行研究,结果表明:该技术对废水中的CODCr及BOD5的去除有显著的效果。当废水的pH值为6 ̄8、水温为25 ̄35℃、CODCr及BOD5分别在3000 ̄9000mg/L和1000 ̄3000mg/L时,CODCr及BOD5的去除率分别大于92%和99%,从而为糖果废水治理达标排放奠定了基础。  相似文献   

7.
厌氧─好氧一体净化器处理生活污水的研究   总被引:1,自引:0,他引:1  
研究了厌氧─好氧一体化污水净化装置处理生活污水的启动及运行特性,试验表明装置在自接种条件下启动,二周内可达到稳定的处理效果,出水COD<100mg·L-1.正常运行,HRT>6.2h时,COD去除率大于85.2%,BOD5去除率大于88.6%,出水水质满足国家的污水排放标准,NH3—N在10.6mg·L-1左右.  相似文献   

8.
采用水解酸化-生物接触氧化-光催化处理印染废水的试验,日处理水量60L,COD及色度的去除率分别都能达到90%以上。出水水质达到〈纺织印染行业水污染物排放标准〉(GB4287~92)一级标准。  相似文献   

9.
SBR工艺在废水处理中的应用   总被引:9,自引:1,他引:9  
对SBR法的工艺特性及其在工业废水处理中的应用进行了评述,指出SBR法是一种极具竞争力的生物处理技术,介绍了用SBR法处理可生化性较差的印染废水的研究结果。实验表明,采用SBR法并辅以铁屑过滤预处理对印染废水的处理效果为COD去除率达85%,BOD5和色度去除率均在90%以上,出水符合排放标准  相似文献   

10.
采用“中和-氯氧化-电化学反应-催化氧化”组合工艺处理碱性、弱酸性染料混合废水,可使混合废水的COD值由14560mg/L降至210mg/L,色度由50000倍降至10倍以下,处理后废水可回收利用或排放。实验结果表明,染料废水可发生协同沉淀效应,若组合得当,可使染料废水得到很大程度的净化。ClO2对某些染料废水具有良好的去除COD和色度作用,其在工业废水工程中的推广应用应引起足够的重视。  相似文献   

11.
Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.  相似文献   

12.
何延凌 《科技信息》2008,(4):258-258
Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women's language from these perspectives: pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women's language, more attention should be paid to language use in social context. What's more, the linguistic phenomena in a speaking community can be understood more thoroughly.  相似文献   

13.
理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。  相似文献   

14.
As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.  相似文献   

15.
正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-  相似文献   

16.
We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-  相似文献   

17.
正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that  相似文献   

18.
<正>"The Journal of Shanghai Normal University:Mathematics"is published by Shanghai Normal University as regular issues of The Journal of Shanghai Normal University each year from 2014 in English.The editors-in-chief of the issues are professors Yuhao Cong and Maoan Han.The Journal of Shanghai Normal University was started in 1958 with  相似文献   

19.
20.
<正>"Journal of Jilin University(Science Edition)"is a comprehensive academic journal in the fields of science sponsored by Jilin University and administrated by the Ministry of Education of the Peoples Republic of China.The journal started publication in 1955.The original name at starting publication was"Journal of Natural Science of Northeast People University",which was changed into"Acta Scientiarum Naturalium Universitatis Jilinensis"in 1958 owing to the name change of the university.The present journal name has  相似文献   

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