共查询到20条相似文献,搜索用时 22 毫秒
1.
Three industries and wastewater and COD discharge of Beijing 总被引:2,自引:0,他引:2
Recently,withtheswiftdevelopmentofeconomyandtheimprovementofpeople′slivingstandard ,thewateruseamountandwastewaterdischargebecomebiggerandbigger,andthewaterqualityisgettingworseandworse .Soilandagriculturalproductshavebeenpollutedbythewastewater,andpeop… 相似文献
2.
Adaptability of microbial inoculators and their contribution to degradation of mineral oil and PAHs 总被引:2,自引:0,他引:2
SONG Xue-ying SONG Yu-fang SUN Tie-heng ZHOU Qi-xing ZHANG Wei ZHANG Lei 《环境科学学报(英文版)》2006,18(2):310-317
Five dominant bacteria strains(A cetobacter sp., Alcdigenes sp., Micrococcus sp., Arthrobacter sp. and Bacillus sp.) and five fungi strains (Cephalosporium sp. Ⅰ, Cephalosporlum sp. Ⅱ, Aspergillus sp. Ⅰ, Aspergillus sp. Ⅱ and Fusarium sp.) isolated from petroleum-contaminated soil were used to assess the potential capability of mineral oil and PAH enhanced degradation separately and jointly using the batch liquid medium cultivation with diesel oil spiked at 1000 mg/L. The experiment was performed on a reciprocal shaker in the darkness at 25℃ to 30℃ for 100 d. The dynamic variation in the activity of microbial inoculators in each treatment and the degradation of the target pollutants during the period of experiment were monitored. Results showed a more rapid biodegradation of mineral oil and PAHs at the beginning of the experiment (about 20 d) by dominant bacteria, fungi and their mixture than that of the indigenous microorganisms, however, thereafter an opposite trcnd was exhibited that the removal ratio by indigenous microorganisms was superior to any other dominant treatments and the tendency lasted till the end of the experiment, indicating the limited competitive capability of dominant microorganisms to degrade the contaminants, and the natural selection of indigenous microorganisms for use in the removal of the contaminants. At the end of the experiment, the removal ratio of mineral oil ranged from 56.8 % to 79.2 % and PAHs ranged from 96.8 % to 99.1% in each treatment by microbial inoculators, 相似文献
3.
YU Guang-ning ZHANG Chun-hui SU Zhong-jie FAN Xue-li PAN Yong-zhan LIU Fu-shun . Civil engineering institute Qingdao Technological University Qingdao . Engineering college Ocean University of China Qingdao . Liaoning Technical University Fuxin 《地球与环境》2005,33(Z1):17-26
<正>To control land surface subsidence caused the underground mineral exploitation and the catastrophic phenomena such as serious damage of buildings, waterbodies, cultivated lands, railways, bridges caused by land subsidence, bed separation grouting technology of overburden is put forward. To provide theoretical support for the technology, the characteristics and the mechanics mechanism of mining overburden from layer-split to formation of bed separation are studied. On the basis of elastic sheet board theory, calculation formula of rock sheet deflection is presented, and the mechanics criteria of the separation formation and the calculation formula of bed separation volume are set up. Finally, the applications and technics of bed separation grout technology of mining overburden to control land subsidence in china are introduced. 相似文献
4.
IntroductionDuetotheformationofsomepotentiallyhazardousby productsfromchlorinedisinfectionindrinkingwater,chlorinedioxide(ClO2 ) ,asanalternativedisinfectantandaneffectiveoxidant,formedfewerhalogenatedDBPsthanchlorine(Richardson ,1 994;2 0 0 0 ;Bryant,1 992 ) .InvestigationsofthegenerationandstabilityofClO2 havealreadypromoteditsapplication .However,previousstudiespaynoattentiontothefactorofelectronactivity (pε)thatactuallyaffectsthegenerationandstabilityofClO2 Theignoranceofpεappearan… 相似文献
5.
David Dollar 《世界环境》2006,(2)
During its 25 years of reform China has made impressive progress in the transition to a market economy. Much of the production and distribution in China is managed through the market, and the efficiency of this mechanism is evident in the country's sustained rapid growth. While the market is good at many things, however, it is not good at everything. One place in particular where the market breaks down concerns the use of natural resources and the environment, particularly where some important resource is freely available. While China's record of production and GDP growth is fantastic, its record of 相似文献
6.
Hongjie Wang Xingchun Liu Yali Wang Shengqi Zhang Guangming Zhang Yangyang Han Mengxiang Li Ling Liu 《环境科学学报(英文版)》2023,35(2):187-197
The temporal and spatial characteristics of urban river bacterial communities help us understand the feedback mechanism of bacteria to changes in the aquatic environment.The Fuhe River plays an important role in determining the water ecological environment of Baiyangdian Lake.16S rRNA gene sequencing was used to study the microbial distribution characteristics in the Fuhe River in different seasons.The results showed that some environmental factors of the surface water (ammonia nitrogen (NH... 相似文献
7.
ThreeIndustries and water consumption of Beijing 总被引:1,自引:0,他引:1
ThreindustriesandwaterconsumptionofBeijingWangHongruiInstituteofEnvironmentalSciences,BeijingNormalUniversity,Beijing100875,... 相似文献
8.
IntroductionPolyaluminiumchloride(PAC) ,akindofinorganicpolymerflocculant,iswidelyusedinwaterandwastewatertreatment.InordertoincreasethecoagulationeffectofPACandimprovethequalityofPACproduct,itisnecessarytoraisethedegreeofpolymerizationofPAC .Generally ,t… 相似文献
9.
This article described the change of technological paradigm from environmentally unfriendly technology to environmentally sound technology(EST),and reported results from the investigation made in 1993-1995 of how China's small-medium enterprises(SMEs)have been innovating technology in response to environmental pressures and tried to identify factors affecting China' SMEs to innovate more environmentally sound products and processes. 相似文献
10.
Emergy evaluation of the environment and economy of Hong Kong 总被引:7,自引:0,他引:7
EmergyevaluationoftheenvironmentandeconomyofHongKongLanShengfangDepartmentofBiology,SouthChinaAgriculturalUniversity,Guangzho... 相似文献
11.
Hongrui M Linke Ge Shengkai Cao Crispin Halsall Junfeng Niu Dongxiao Bai Guangkai He Peng Zhang 《环境科学学报(英文版)》2023,35(2):139-145
The photochemical behavior of organic pollutants in ice is poorly studied in comparison to aqueous photochemistry.Here we report a detailed comparison of ice and aqueous photodegradation of two representative OH-PAHs,2-hydroxyfluorene (2-OHFL) and 9-hydroxyfluorene (9-OHFL),which are newly recognized contaminants in the wider environment including colder regions.Interestingly,their photodegradation kinetics were clearly influenced by whether they reside in ice or water.Under the same simulated s... 相似文献
12.
DynamicsimulationandmodelingofPCPtransportbetweensedimentandwaterLiTie,YeChangming,LeiZhifangResearchCenterforEcoEnviro... 相似文献
13.
14.
Characteristics of air particulate matter and their sources inurban and rural area of Beijing, China
IntroductionThereisagrowingawarenesstotheimportanceofairpollutioninmajorcites.Anumberofstudieshaveshownthattheconcentrationsofcertaintraceelementsintheurbanatmospherehavebeenelevatedby pollution ,andtherefore ,thehighestconcentrationsofthesechemicalcont… 相似文献
15.
KONG Woo-seok 《环境科学学报(英文版)》1999,11(2):243-246
1IntroductionDuetotherapidglobalwarmingtrend,whichtookplaceinthe20thcentury,numerousunexpectedenvironmentalandecologicalisues... 相似文献
16.
objectiveofcouplingshouldbedecidedbecausethefactorsofwaterandlandresourceshavevariedefectsondiferentpurposes,forexample,tobui... 相似文献
17.
Side-effectsoforganicandinorganicpollutantsonsoilnitrificationandrespiration¥GongPing;SunTieheng(InstituteofAppliedEcology,Ch... 相似文献
18.
1 IntroductionDuringthepastfewyears,membraneseparationshavebecomemorewidelyused,andreplacedsomeoftheconventionalconcentrationt?.. 相似文献
19.
Ye Changming 《环境科学学报(英文版)》1995,7(3):259-265
FoundationofregionalecologyanditsmethodologiesYeChangming(ResearchCenterforEco-EnvironrnentalSciences,ChineseAcadernyofScienc... 相似文献
20.
ChemicalbehaviorandriskassessmentoffourpesticidesinsoilandwaterJiangXiliu;HuaXiaomei(NanjingInstituteofEnvironrnentScience,Na... 相似文献