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sand filtration
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  砂滤
     The combined removals through conventional water treatment process of chlorination,flocculation-sedimentation and sand filtration for AOC,AOC-P17 and AOC-NOX in drinking water are-13.0%,17.1% and-83.3% respectively and which is evidently influenced by water temperature.
     因氯氧化、混凝沉淀和砂滤等共同作用,常规处理工艺对总AOC、AOC-P17、AOC-NOX的去除率分别为-13%、17.1%与-83.3%,且受水温影响明显;
短句来源
     Treatment of Bleaching and Dyeing Wastewater by Coagulation and Sedimentation/CASS/Sand Filtration Processes
     混凝沉淀/CASS/砂滤工艺处理漂染废水
短句来源
     By means of co-palpitation of the radionuclide 131Ba with stable isotope Ba2+,flocculation by Al2(SO4)3, activated carbon adsorption and sand filtration,this paper introduce the the of the simulated synthetic 131Ba containing radioactive wastewater and the satisfactory results in which the final effluent 131Ba concentration was well below the maximum tolerant concentration in surface water sources.
     本文通过放射性核素131Ba与稳定性同位素Ba2+共沉淀,Al2(SO4)3混凝以及活性炭,砂滤等程序,对模拟131Ba放射性废水处理收到令人满意的效果.最后出水均低于国家规定的地表水源最大允许浓度.
短句来源
     The removal rate of the chromaticity is 57% and 37% respectively by biological sand filtration system and conventional water treatment,and the turbidity is 90% and 60-80%.
     生物砂滤系统与常规净水工艺系统对色度的去除率分别为57%、30%,对浊度的去除率分别为90%、60~80%;
短句来源
     The effect of chromaticity and turbidity removal in the micro-pollutea source water by biological sand filtration system has been studied.
     采用生物砂滤系统对微污染水源水去除色度和浊度进行分析研究,结果表明,生物砂滤系统对微污染水源水色度和浊度的去除效果明显优于常规净水系统。
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  砂过滤
     An Experimental Study on Sand Filtration Simulation
     砂过滤模拟实验研究
短句来源
     The principles,processes,costs and(effects) of different disinfection techniques were summarized,especially a new method of slow sand filtration was introduced.
     该文综述了国内外营养液消毒方法、原理、成本及应用效果,重点介绍了营养液消毒新技术-慢砂过滤
短句来源
     Slow Rate Sand Filtration Process in Rural Water Supply
     适用于乡镇给水的慢砂过滤工艺
短句来源
     At first the raw water was pre treated by micro flocculation and sand filtration to improve the membrane flux and the removal of organics substances in further UF process.
     为了提高有机物的去除效果和膜通量 ,采用微絮凝和砂过滤作为预处理。
短句来源
     For printing and dyeing waste water, adopting the technology of coagulation sediment and pre-processing sand filtration is capable of removing almost all turbidity and partial chroma .
     印染废水采用混凝沉淀及砂过滤前处理工艺,可去除几乎全部浊度及部分色度。
短句来源
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  沙滤
     Furthermore,sand filtration and chemical coagulation-flocculation treatment utilized at the plant could reduce bacteria number by 2 log10.If reclaimed water is expectedly used in domestic,an additional disinfection maybe required so that it will not be harmful to public health.
     沙滤与絮凝沉淀工艺处理出水的细菌去除率达到2 log10,但在用于喷洒、景观回用方面有必要消毒以保证不对公众健康有负面影响。
短句来源
  “sand filtration”译为未确定词的双语例句
     The results show that when the concentration of the coagulant Al2(SO4)3·18H2O is 100 mg/L,the concentration of PAM is 3 mg/L,the pH value of the wastewater is 5.5 and the inlet water is of ρ(CODCr) 12 000 mg/L,the ρ(CODCr) of the effluent water can be reduced down to 750 mg/L after coagulation filtration plus quartz sand filtration.
     试验结果表明:混凝剂Al2(SO4)3·18H2O投加量100mg/L,PAM投加量3mg/L和废水pH值为5.5的条件下,进水ρ(CODCr)为12000mg/L,经混凝沉淀+石英砂过滤后,出水ρ(CODCr)可降至750mg/L。
短句来源
     Full-scale study results show that the nitrobenzene concentration in inlet water is below 2 μg/L after 2 h adsorption by PAC in the intake pipe,while it is between 25.9-66.2 μg/L in raw water,and below 1 μg/L in purified water after sand filtration. The turbidity of purified water is about 1 NTU.
     生产性试验的结果表明,当原水硝基苯浓度为25.9~66.2μg/L时,经PAC在取水管道中吸附约2 h后,进厂水的硝基苯浓度稳定在2μg/L以下,滤后水的硝基苯浓度<1μg/L,滤后水的浊度在1 NTU左右。
短句来源
     Principle and Design of Rough Filtration Plus Slow Sand Filtration Technics
     粗滤慢滤组合净水工艺原理与设计
短句来源
     STUDY OF RURAL DRINKING WATER PROCESSING WITH BIO-SLOW SAND FILTRATION
     生物慢滤技术用于农村饮水处理的研究
短句来源
     Practice and mechanism of ammoniumnitrogen removal by roughing filtration and slowsand filtration process.
     粗滤慢滤工艺去除氨氮的实践与机制
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  sand filtration
Fecal coliform showed the same rate of reduction as a result of sand filtration, while it reached undetectable numbers in the effluent of GAC contactors.
      
The plant system consists of sand filtration, gamma-irradiation, ozonation and ion-exchange.
      
Slow sand filtration results in lower quantities of organic particulate material and organisms passing through into supply, rather than rapid gravity filtration, and the community is smaller and of different structure.
      
Coli and faecal streptococci (enterococci) as the result of slow sand filtration
      
More than 99.9% of the BPA contained in raw leachates was removed by a conventional series of treatment processes consisting of biological treatment, coagulation, sedimentation, sand filtration, and activated carbon adsorption.
      
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On the basis of experimental results, the following three methods are suggested to prevent the settling of larvae and the killing or removing of adults of fouling mussels in pipelines:1.Sand filtration. Before water is pumped into the pipelines, it is made to pass through sand layer 3 cm. or more in thickness and consisting of grains between No. 40 and No. 60 standard sieve in size. It has been proved, that with such thickness and grain size, the sand layer is effective in preventing the entrance...

On the basis of experimental results, the following three methods are suggested to prevent the settling of larvae and the killing or removing of adults of fouling mussels in pipelines:1.Sand filtration. Before water is pumped into the pipelines, it is made to pass through sand layer 3 cm. or more in thickness and consisting of grains between No. 40 and No. 60 standard sieve in size. It has been proved, that with such thickness and grain size, the sand layer is effective in preventing the entrance of eggs or larvae of mussels and other fouling organisms 65u or more in size.2.Poisoning with arsenic trioxide. One of the great difficulties of exterminating mussels is that they are able to protect themselves by closing their valves in the presence of poisonous substances, hence greatly prolonging the time needed for chemical treatment. If chemicals can be found which are poisonous to the mussels but to the presence of which they are not very sensitive then the duration of chemical treatment will be greatly shortened. Experiments prove that arsenic trioxide is the desired chemical, concentration of 100-400 p. p. m. being sufficient to kill the mussels in 20 minutes to 2 hours.3.Chlorinated lime treatment. One percent chlorinated lime, containing 38.6% available chlorine, in sea water is found to be able to dissolve the attached byssus threads of the mussels in 10 minutes. By such a treatment, the mussels will be detached from the pipelines and may be easily washed off with water flow.It is suggested that the second and third treatment may be periodically used before the mussels grow to a size that will be detrimental to the plant equipmants.

本文从三方面提供可能应用于解决管道中贻贝堵塞问题的办法: (1)砂滤法:在海水进入水管前用砂将贻贝幼虫滤去,凡颗粒小于40号筛的砂,厚度在3厘米以上,65微米的贻贝卵或幼虫即不能滤过。 (2)用三氧化二砷杀死巳附着的贻贝成体,优点是贻贝不能发觉,施毒时间短而毒效大,用浓度400—100p.p.m.时20分钟至2小时即可杀死。 (3)用漂白粉使贻贝的附着足丝溶解而将其从水管中冲出的办法,含有效氯为38.6%的漂白粉1%溶液在10分钟内即可使足丝溶解,贻贝脱落。

It has been more than a decade since the need for advanced treatment waetwater reuse was recognized in the world and our country。 The treatment process of waetewater for reuse is generally primary treatment secondary treatment and tertiary treatment which includes coagulation clarification sand filtration and chlorine disinfection ate. This paper reported that bentonite was used as a absorbent orcoagulan aid to remove pollutants in waetewater such as TOC. COD. ss etc. It can reduce the treatment costs...

It has been more than a decade since the need for advanced treatment waetwater reuse was recognized in the world and our country。 The treatment process of waetewater for reuse is generally primary treatment secondary treatment and tertiary treatment which includes coagulation clarification sand filtration and chlorine disinfection ate. This paper reported that bentonite was used as a absorbent orcoagulan aid to remove pollutants in waetewater such as TOC. COD. ss etc. It can reduce the treatment costs and simplify treatment process.

近十多年来,污水经过高级处理后回用已引起世界和我国的重视。以回用为目的污水处理过程一般是初级处理,二级处理与三级处理。三级处理工艺包括混凝沉淀、过滤和氯消毒等。本文介绍应用膨润土作为吸附剂或助凝剂,去除污水中的污染物如TOC、COD、SS等,以便降低处理成本和简化处理流程。

A technological process contained coagulation--floation--sand filtration--activated carbon adsorption was presented in order to treat waste water (COD>1000mg/1), oil content (>4g/1) of rinsed oii in paint factory. The experiment showed that COD was removed 98% and more after choosing the suitable coagulant aluminum sulfate and optimizing its dose, and COD, oil content, and suspended solid met State Discharge Standard through the sand filter and activated carbon adsorption column. Adsorptive capacity...

A technological process contained coagulation--floation--sand filtration--activated carbon adsorption was presented in order to treat waste water (COD>1000mg/1), oil content (>4g/1) of rinsed oii in paint factory. The experiment showed that COD was removed 98% and more after choosing the suitable coagulant aluminum sulfate and optimizing its dose, and COD, oil content, and suspended solid met State Discharge Standard through the sand filter and activated carbon adsorption column. Adsorptive capacity No, constant of speed of flow K and critical bed depth Do of activated carbon adsorption column in Bohart--Adams equation were calculated based on the break--through curve of activated carbon.

本文针对造漆漂油废水COD高(>10000mg/l),含油量高(>4g/l)废水量小(1天数吨)的特点,提出了混凝—浮选—砂滤—活性性炭吸附的工艺流程。实验说明选择合适的混凝剂硫酸铝和优化投药量,混凝浮选后的出水COD可去除98%以上。经砂滤和活性炭吸附后,COD,含油量和悬浮物均可达到排放标准。本文还根据活性炭吸附穿透曲线,计算了Bohart-Adams关系式中的吸附容量No,流速常数K和活性炭柱临界厚度D。

 
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