酿酒过程中会产生大量富含有机污染物的废水,目前对酿酒行业污水处理过程中温室气体排放水平的认识尚不清楚。结合《城镇污水处理厂污染物去除协同控制温室气体核算技术指南》以及生命周期评价(LCA)方法,构建酿酒厂污水处理碳排放定量...酿酒过程中会产生大量富含有机污染物的废水,目前对酿酒行业污水处理过程中温室气体排放水平的认识尚不清楚。结合《城镇污水处理厂污染物去除协同控制温室气体核算技术指南》以及生命周期评价(LCA)方法,构建酿酒厂污水处理碳排放定量分析模型,对比了传统工艺和厌氧微生物在线培养技术(IBB)协同鸟粪石脱氮除磷(MAP)工艺在酿酒污水处理过程中的温室气体排放。结果表明,IBB+MAP工艺处理1 t废水的净碳排放量为-46.8 kg CO_(2)eq,其碳减排效益与传统工艺相比提高50.9%。另外,经济效益分析表明,IBB+MAP工艺带来的经济收益约为2.76元/t污水,可有效降低污水处理的运营负担。展开更多
In-plane epitaxial growth of ZnIn_(2)S_(4) nanosheets on the surface of hexagonal phase WO_(3) nanorods was achieved by a facile solvothermal method.The unique 3D heterostructure not only enlarged the specific surface...In-plane epitaxial growth of ZnIn_(2)S_(4) nanosheets on the surface of hexagonal phase WO_(3) nanorods was achieved by a facile solvothermal method.The unique 3D heterostructure not only enlarged the specific surface area,but also red-shifted the absorption edge from 381 to 476 nm to improve the light harvesting ability,which largely enhanced the photocatalytic hydrogen evolution.The H_(2) production rate of the best performing ZnIn_(2)S_(4)/WO_(3) photocatalyst(ZIS-2.5/W,the material with a molar rate of ZnIn_(2)S_(4)(ZIS)to WO_(3)(W)of 2.5)was 300μmol·g^(–1)·h^(–1),around 417 times and 2 times higher than the rates of pristine WO_(3) and ZnIn_(2)S_(4),respectively.The apparent quantum efficiency for ZIS-2.5/W composite was up to 2.81%at 400 nm.Based on the difference in Fermi levels between WO_(3) and ZnIn_(2)S_(4),and the distribution of the redox active sites on WO_(3)/ZnIn_(2)S_(4) heterostructure,a S-scheme electron transfer mechanism was proposed to illustrate the improved photocatalytic activity of WO_(3)/ZnIn_(2)S_(4) heterojunction,which not only stimulated the spatial separation of the photogenerated charge carriers,but also maintained the strong reduction/oxidation ability of the photocatalyst.展开更多
文摘酿酒过程中会产生大量富含有机污染物的废水,目前对酿酒行业污水处理过程中温室气体排放水平的认识尚不清楚。结合《城镇污水处理厂污染物去除协同控制温室气体核算技术指南》以及生命周期评价(LCA)方法,构建酿酒厂污水处理碳排放定量分析模型,对比了传统工艺和厌氧微生物在线培养技术(IBB)协同鸟粪石脱氮除磷(MAP)工艺在酿酒污水处理过程中的温室气体排放。结果表明,IBB+MAP工艺处理1 t废水的净碳排放量为-46.8 kg CO_(2)eq,其碳减排效益与传统工艺相比提高50.9%。另外,经济效益分析表明,IBB+MAP工艺带来的经济收益约为2.76元/t污水,可有效降低污水处理的运营负担。
文摘In-plane epitaxial growth of ZnIn_(2)S_(4) nanosheets on the surface of hexagonal phase WO_(3) nanorods was achieved by a facile solvothermal method.The unique 3D heterostructure not only enlarged the specific surface area,but also red-shifted the absorption edge from 381 to 476 nm to improve the light harvesting ability,which largely enhanced the photocatalytic hydrogen evolution.The H_(2) production rate of the best performing ZnIn_(2)S_(4)/WO_(3) photocatalyst(ZIS-2.5/W,the material with a molar rate of ZnIn_(2)S_(4)(ZIS)to WO_(3)(W)of 2.5)was 300μmol·g^(–1)·h^(–1),around 417 times and 2 times higher than the rates of pristine WO_(3) and ZnIn_(2)S_(4),respectively.The apparent quantum efficiency for ZIS-2.5/W composite was up to 2.81%at 400 nm.Based on the difference in Fermi levels between WO_(3) and ZnIn_(2)S_(4),and the distribution of the redox active sites on WO_(3)/ZnIn_(2)S_(4) heterostructure,a S-scheme electron transfer mechanism was proposed to illustrate the improved photocatalytic activity of WO_(3)/ZnIn_(2)S_(4) heterojunction,which not only stimulated the spatial separation of the photogenerated charge carriers,but also maintained the strong reduction/oxidation ability of the photocatalyst.
