陶粒与堆肥的混合基质可作为氧化消减垃圾填埋气的材料。在实验室模拟条件下,分析了生物覆盖层基质的含水率、温度、初始甲烷浓度、初始氧气浓度等环境因子对甲烷氧化效率的影响,借助O rigin version 7.5软件进行生物覆盖层材料甲烷氧...
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陶粒与堆肥的混合基质可作为氧化消减垃圾填埋气的材料。在实验室模拟条件下,分析了生物覆盖层基质的含水率、温度、初始甲烷浓度、初始氧气浓度等环境因子对甲烷氧化效率的影响,借助O rigin version 7.5软件进行生物覆盖层材料甲烷氧化动力学参数拟合,旨在为实际工程应用提供科学依据。试验结果表明:堆肥与陶粒的复合基质最佳含水率为40%时,甲烷的氧化速率达6.28μmolCH4.g-1h-1;覆盖层材料的最大甲烷氧化速率为Vm ax为9.10427μmolCH4g-1h-1,半速常数Km为3.45%。
[Objective] The characteristic of non-point source pollution of a typical village in Baiyangdian Lake basin was studied.[Method] The discharge of domestic sewage and solid wastes of the typical village was investigate...
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[Objective] The characteristic of non-point source pollution of a typical village in Baiyangdian Lake basin was studied.[Method] The discharge of domestic sewage and solid wastes of the typical village was investigated,and both pollutant and nutrient element content were monitored,as well as the water quality and quantity of rainfall runoff.[Result] The non-point source pollution of livestock manure was far more serious than the sum of domestic sewage and domestic waste in this village,and the annual emission of total organic carbon(TOC),total nitrogen(TN) and total phosphorus(TP) was 37 794.0,4 102.9 and 1 923.7 kg,*** event mean concentration(EMC)of chemical oxygen demand COD,TN and TP in rainfall runoff was 44.5,78.8,1.3 mg/L,respectively,and annual pollution load was 7.6,13.4 and 0.2 kg/hm2,respectively,while the annual pollution load of COD accounted for 5.1% of standard farmland,and that of TN and TP occupied 4.5% and 0.49% of slope farmland.[Conclusion] Livestock manure was the main source of non-point source pollution in the village and the annual pollution load of non-point source pollution was obtained.
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