Attenuation of heavy metals in landfill leachate at different redox zones.;
垃圾渗滤液中重金属在不同氧化还原带中的衰减
Experimental results indicate that four sequent redox zones are appeared in pollution plume,i.
通过实验室模拟实验研究渗滤液中污染物在地下环境中迁移转化作用,实验结果表明,垃圾渗滤液在地下出现了4个顺序氧化还原带,分别为产甲烷带、Fe(III)还原带、NO-3还原带和氧还原带,微生物在每个带利用的最终电子受体是不同的。
A soil column filled with sandy soil was constructed to investigate biogeochemical process of leachate pollutants degradation and redox zones in subsurface environment,and variation of Fe~3+,Fe~2+,oxidation capacity (OXC) and reduction capacity(RDC) of fresh and contaminated soil were analyzed.
结果表明,垃圾渗滤液污染羽中出现了4个顺序氧化还原带,微生物在每个带所利用的最终电子受体是不同的,分别为CO2、Fe3+、NO-3和O2,相应地依次称为产甲烷带、铁还原带、NO-3还原带和氧还原带;各带的标志性物质HCO-3、Fe2+、NO-2和DO的最高值分别为10 353 mg/L、13。
As pollutants are migrated in the unsaturated zone, biologic oxidation zone is produced in the upper part and biologic reduction zone is developed in the underside.
污染物在包气带中迁移时,会在表层形成生物氧化带,在下 部形成生物还原带。
Effects of reducing agents on NO reduction over Ag/Al_2O_3 catalyst;
还原剂对Ag/Al_2O_3催化剂上NO还原的影响
The results showed that NO reduction and NO oxidation.
结果表明:NO还原和氧化在其脱除过程中同时共存,当NO,N2,O2,H2O和CO2的体积浓度分别为200×10-6,80%,5%,6%和9%时,NO氧化所占的比例比NO还原的大很多;脉冲频率增大导致NO还原率和氧化率均增大;H2O浓度增大导致HNO3浓度增大,表明NO氧化所占的比例随H2O浓度增大而增大。
Combustion experiments on Shenmu bituminous coal and Geliping blind coal were carried out in a high-temperature horizontal twin-tube quartz stove,and NO volume fraction was measured in real-time during the combustion to investigate the effect of magnesium acetate on NO reduction.
实验结果表明,醋酸镁对燃料型NO生成的还原作用受到煤种、燃烧温度和燃烧气氛的影响,NO还原率可达23%。
The Treatment of Wastewater Containing Cr~(6+) Through Electroanalysis-deoxidization;
电解还原法处理含铬废水
Study on technique of separation of Mn-Ag oxidation ore with amylum by degradation deoxidization;
淀粉降解还原分离锰银氧化矿工艺研究
Several programs are contrasted by experiments and the process that neutralization-deoxidization-P204 extraction-stripping with sulfuric acid-oxidization-V2O5 deposition is proved the best route.
主要论述对豫西某地石煤钒矿硫酸浸液的后序处理试验研究,针对该料液的特点进行多种研究方案对比,最终确立浸出液中和—还原—H(C8H17)2PO4(以下简写为P204)萃取—硫酸反萃取—氧化沉钒技术路线,采用15%P204+10%TBP+75%煤油为萃取体系,1。