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fresh leachate
相关语句
  新鲜渗滤液
     Study on treatment of fresh leachate from municipal solid waste landfill by SBR
     SBR法处理垃圾填埋场新鲜渗滤液的实验研究
短句来源
     It has been learned that the effluent COD concentration was reduced to about 500 mg/L with BOD_5/COD ratio of about 0.14, which was independent of volume load, after fresh leachate was treated by SBR for 24 hours.
     研究结果表明新鲜渗滤液经24h曝气处理后,出水COD浓度约为500mg/L,BOD5/COD降为014左右; 出水COD浓度与容积负荷无明显相关性;
短句来源
     The colloidal particles of different sizes in fresh leachate sampled from the landfill compartment under placement operation and aged leachate sampled from the landfill compartment closed in 1991 were separated by a series of membranes of different porosity. Concentrations of COD,ammonia|N,and dissolved solid(DS),and conductivity and pH of the leachates were determined before and after gradient separation by the membrane.
     用系列滤膜对老港填埋场的新鲜渗滤液、1991年垃圾产生的渗滤液进行了梯度分离 ,并研究了COD、氨氮、TS、DS、电导率和pH的变化趋势与不同孔径膜之间的关系 .
短句来源
     Fresh leachate from simulated municipal solid waste landfill was treated by sequencing batch reactor (SBR) with tapered aeration. The study analyzed the effects of operation parameters on effluent quality and the transfer of the organic carbon released from leachate.
     采用SBR渐减曝气工艺处理模拟城市生活垃圾填埋场新鲜渗滤液,实验研究了反应器运行条件与出水水质的关系及有机碳的转移规律。
短句来源
  相似匹配句对
     THE EFFECTS OF RECIRCULATION PARAMETERS ON LEACHATE FROM FRESH MUNICIPAL REFUSE
     回灌运行参数对新鲜垃圾渗滤液的影响研究
短句来源
     Fresh Mexico
     新鲜墨西哥——访墨西哥驻华使馆商务处参赞邵振书先生
短句来源
     FRESH FEELING
     新年伊始给他的一切都是新鲜——居室变身A计划
短句来源
     Study on treatment of fresh leachate from municipal solid waste landfill by SBR
     SBR法处理垃圾填埋场新鲜渗滤液的实验研究
短句来源
     Treatment of Waste Leachate
     垃圾渗滤液的处理
短句来源
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The colloidal particles of different sizes in fresh leachate sampled from the landfill compartment under placement operation and aged leachate sampled from the landfill compartment closed in 1991 were separated by a series of membranes of different porosity.Concentrations of COD,ammonia|N,and dissolved solid(DS),and conductivity and pH of the leachates were determined before and after gradient separation by the membrane.They were quantitatively correlated to the membrane porosity.It is found that...

The colloidal particles of different sizes in fresh leachate sampled from the landfill compartment under placement operation and aged leachate sampled from the landfill compartment closed in 1991 were separated by a series of membranes of different porosity.Concentrations of COD,ammonia|N,and dissolved solid(DS),and conductivity and pH of the leachates were determined before and after gradient separation by the membrane.They were quantitatively correlated to the membrane porosity.It is found that that concentrations of COD,ammonia|N,and Ds decreased in the leachates after membrane separation and that the percentile removals depended on the measured parameters.Conductivity decreased at first and then increased,while pH increased and then decreased.

用系列滤膜对老港填埋场的新鲜渗滤液、1991年垃圾产生的渗滤液进行了梯度分离 ,并研究了COD、氨氮、TS、DS、电导率和pH的变化趋势与不同孔径膜之间的关系 .结果表明 :随着系列膜孔径的减小 ,经过膜的梯度分离后 ,出水COD、氨氮、DS值逐渐减少 ,但减少的幅度并不一样 ,电导率先减小后增加 ,pH则先增加后减小 .

Based on the typical MSW composition in Shanghai, lab-scale simulated landfill columns were used to study the effects of different leachate recirculation operations on landfill gas (LFG) production. Fresh leachate, pretreated leachate (anaerobic process or aerobic process), and leachate mixture (fresh leachate and leachate from a well-decomposed landfill) were recirculated to landfill columns respectively. The results indicated that the recirculation of leachate without any pretreatment inhibited...

Based on the typical MSW composition in Shanghai, lab-scale simulated landfill columns were used to study the effects of different leachate recirculation operations on landfill gas (LFG) production. Fresh leachate, pretreated leachate (anaerobic process or aerobic process), and leachate mixture (fresh leachate and leachate from a well-decomposed landfill) were recirculated to landfill columns respectively. The results indicated that the recirculation of leachate without any pretreatment inhibited methane fermentation, while the recirculation of leachate pretreated to some extent benefited to methane fermentation, in that it greatly improved the gas production rate, cumulative gas production Q_t, the ratio of Q_(eff)/Q_t (above 0.80, Q_(eff) means production of gas with methane concentration over 50%), and the ratio of Q_t/Q_p (above 0.40, Q_p means theoretic gas production), as well as shortened the gas production period into near one year. Different leachate pretreatment leaded to different effects, the descending sequence of effectiveness was anaerobic process, mixing with leachate with well-decomposed landfill, and aerobic process. Different leachate pretreatment processes and their treatment level were regarded to influence the methane fermentation and the amount of organic matter disposed ex situ, thus changing the production and quality of LFG.

以上海市生活垃圾组成为依据,通过填埋模拟柱实验研究了不同渗滤液循环方式对新鲜垃圾填埋层填埋气体(LFG)产生的影响.渗滤液循环方式包括:原液循环、厌氧预处理后循环、好氧预处理后循环、原液与陈垃圾柱出水混合后循环.结果表明,原液循环抑制了甲烷化进程,产气速率小,产气期分散.渗滤液经适当预处理后循环均能改善LFG的各项气量指标,表现为产气速率显著提高、产气期集中(本实验条件下约1a);Qt(实际累积产气量)增加,Q有效 Qt值(甲烷浓度大于50%的填埋气体量与实际累积产气量的比值)大于0 80,Qt Qp值(实际累积产气量与计算总产气量的比值)大于0 4.但渗滤液经不同预处理后循环对LFG各项气量指标的优化效果不同,排序为厌氧预处理后循环>原液与陈垃圾柱出水混合后循环>好氧预处理后循环.优化LFG各项气量指标的关键是:①缩短填埋层进入稳定的甲烷化阶段的时间;②减少垃圾中有机物的场外去除量.而渗滤液的预处理程度和方式对这两个因素有直接影响.

Fresh leachate from simulated municipal solid waste landfill was treated by sequencing batch reactor (SBR) with tapered aeration. The study analyzed the effects of operation parameters on effluent quality and the transfer of the organic carbon released from leachate. It has been learned that the effluent COD concentration was reduced to about 500 mg/L with BOD_5/COD ratio of about 0.14, which was independent of volume load, after fresh leachate was treated by SBR for 24 hours. COD reduction rate was proportional...

Fresh leachate from simulated municipal solid waste landfill was treated by sequencing batch reactor (SBR) with tapered aeration. The study analyzed the effects of operation parameters on effluent quality and the transfer of the organic carbon released from leachate. It has been learned that the effluent COD concentration was reduced to about 500 mg/L with BOD_5/COD ratio of about 0.14, which was independent of volume load, after fresh leachate was treated by SBR for 24 hours. COD reduction rate was proportional to volume load and reached 95% under volume load of 5.0 kg COD/m3·d. The ratio of transferred organic carbon to CO_2 was proportional to volume load. When volume load rose to 5.0 kg COD/m3·d, nearly 100 % of organic carbon converted to CO_2, and sludge (MLVSS) concentration kept constant. The highest volume load of the SBR was 5.0 kg COD/m3·d with sludge concentration of 7.12 g/L.

采用SBR渐减曝气工艺处理模拟城市生活垃圾填埋场新鲜渗滤液,实验研究了反应器运行条件与出水水质的关系及有机碳的转移规律。研究结果表明新鲜渗滤液经24h曝气处理后,出水COD浓度约为500mg/L,BOD5/COD降为014左右;出水COD浓度与容积负荷无明显相关性;COD去除率与容积负荷呈正比,并在容积负荷为50kgCOD/m3·d时达到最高,约95%;去除的有机碳气相转化率与容积负荷呈正比,在容积负荷为50kgCOD/m3·d时,有机碳气相转化率接近100%;该系统最高容积负荷为50kgCOD/m3·d,相应的污泥浓度(以混合液悬浮性挥发固体(MLVSS)计)为712g/L。

 
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