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chlorination
    Analysis of Influence Factors on Chloroform Creation During Chlorination in Domestic Water
    饮用水氯化消毒产生氯仿的影响因素分析
    GC/MS test showed that total organic species number was reduced 59.7% and total spectrum aera was reduced 33% after treatment by“pretreatment+ozone+BAC+chlorination”, on the other hand, total organic species number was reduced 44% and total spectrum aera was reduced 13% after treatment by“pretreatment+air+BAC+chlorination”.
    GC/MS检测结果表明,“前处理工艺+臭氧+BAC+氯化消毒”工艺使原水中有机物的种类减少了46种,色谱峰总面积减少了33%。
    Compared with traditional chlorination, sequeutial chlorination, i.e. short-term free chlorine plus chloramine disinfection can lower 35.8%~77.0% of trihalomethane formation and 36.6%~54.8% of haloacetic acids formation.
    与传统的氯消毒相比,顺序氯化消毒工艺可以有效减少消毒副产物的生成量,THMs减少35.8%~77·0%,HAAs减少36·6%~54·8%;
    Under the condition of same original water, the THMs and HAAs produced from sequential chlorination disinfection technology was 35.8%~77.0% and 36.6%~54.8% less than those from free chlorination.
    相同原水条件下,顺序氯化消毒工艺产生的三卤甲烷浓度比游离氯消毒工艺减少35.8%~77.0%; 卤乙酸减少36.6%~54.8%.
    Issues on Organic Halogen in Water Chlorination
    水氯化消毒出水中的卤代物问题
    Study on Degradation of Disinfection By-products of Chlorination in Drinking Water by Irradiation
    辐照降解饮用水氯化消毒副产物的研究
    Studies on the sequential chlorination disinfection technology
    顺序氯化消毒工艺的研究
    CHLORINATION OF DRINKING WATER AND CONTROL OF ITS BY-PRODUCTS
    饮用水氯化消毒及其副产物的控制对策
    Research Progress of Chlorination Disinfection By-products in Drinking Water
    饮用水中氯化消毒副产物的研究进展
    With people’s attention to the health risk of chlorination Disinfection By-Products, DBPs in chlorinated drinking water is a hot issue in water supply field today.
    随着人们对氯化消毒副产物所带来健康风险的不断关注,饮用水中的消毒副产物成为现今给水行业的热点问题。
    The result demonstrated that the yield of the chlorination by-products decreased evidently by this measurement than that of conventional treatment, also the mutagenic activity of the output water transformed in or near to negative from the positive.
    试验发现,与现行的常规给水处理工艺相比,高锰酸盐复合药剂预处理系统可显著地减少氯化消毒过程中氯化副产物生成量,水的致突变活性也由阳性转为阴性或接近阴性.
    This paper analyses the precursors, the formation pathways, the kinds and the forma-tion potential of disinfection by -products (DBPs) during Water Chlorination Processes, and also discusses the effective methods of controlling DBPs formation.
    对氯化消毒过程中形成有害副产物的母体、副产物的形成途径、种类及其形成势和影响因素进行了分析介绍,探讨并提出了控制消毒副产物形成的主要方法和途径。
    Results showed irradiation can effectively decompose disinfection by-products (DBPs) of chlorination and restrain the further generation of DBPs, which was very important for keeping the quality of drinking water.
    结果表明:辐照技术能有效地降解饮用水氯化消毒副产物,并且还能够抑制消毒副产物的进一步生成,这对于消毒后饮用水质量的保持有着十分重要的意义。
    It is compared that the efficiency of control disinfection by-products and their precursors by sequeutial-chlorination disinfection and traditional free chlorination disinfection following different processes combination.
    为实现对消毒副产物的控制,比较了新开发的顺序氯化消毒工艺与传统氯消毒工艺在常规工艺、常规+深度处理工艺、预氧化+常规+深度处理工艺中对消毒副产物及其前体物的去除特性.
    The formation of trihalomethane and haloacetic acids by sequeutial chlorination following the simplest traditional process is even less than their formation by free chlorination following the most complex process, pre-ozonization plus traditional one and ozonization-active carbon process.
    对最简单的传统工艺进行顺序氯化消毒产生THMs和HAAs为18·51μg/L和19·25μg/L,低于采用最复杂工艺:预臭氧氧化+常规+臭氧-活性炭工艺进行传统氯消毒的副产物生成量(THMs19·40μg/L,HAAs24·70μg/L).
    A new safe chlorination disinfection process,the sequential disinfection process with short-term free chlorine plus chloramines was investigated its efficiency on control of indices of microorganism,disinfection by-products and bio-stability.
    在中试规模试验中,研究了“短时游离氯后转氯胺的顺序氯化消毒工艺”对微生物、消毒副产物和生物稳定性指标的控制效果.
    The poorer quality the water had,the more advantage the safe-chlorination disinfection had than free chlorination disinfection one.
    消毒进水水质越差,顺序氯化消毒工艺在消毒副产物控制方面就越有优势.
    The results showed that the turbidity of settled water and filtered water are clearly reduced,the removal effect of UV_(254) and COD_(Mn) index are improved,the inactivation effects to pathogenic microbe are improved,and precursors of chlorination disinfection by-products are reduced by pre-oxidation of PPC.
    结果表明,PPC预氧化能够明显降低沉后以及滤后水浊度、提高对UV254、CODMn指标的去除效果,提高对致病微生物灭活作用,同时降低氯化消毒副产物前体物.
    Since Rook first detected trichloromethane in drinking water, chlorination disinfection by-products (CDBPs) have been extensively studied.
    自Rook首次报道饮用水中存在三氯甲烷,有关氯化消毒副产物(CDBPs)的研究一直受到广泛关注。
    This paper introduced the research progress of CDBPs, which includes formation mechanism and influence factors, concentration level, health risk and control technologies, and pointed out the variation of toxic organics in source water during chlorination should be investigated.
    该文介绍了CDBPs的研究进展,包括形成机理与影响因素、浓度水平、健康风险及控制技术。 指出除天然有机化合物外,应关注水源水中的有毒有害有机物在氯化消毒过程中的变化。
 

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