在“双碳”目标背景下,为实现微电网系统的低碳排放和风电消纳最大化,提出了一种含碳捕集电厂(carbon capture power plant,CCPP)及电转气(power-to-gas,P2G)耦合的综合能源系统(integrated energy system,IES)和电车入网(vehicle to gr...在“双碳”目标背景下,为实现微电网系统的低碳排放和风电消纳最大化,提出了一种含碳捕集电厂(carbon capture power plant,CCPP)及电转气(power-to-gas,P2G)耦合的综合能源系统(integrated energy system,IES)和电车入网(vehicle to grid,V2G)的双层模型优化调度策略。首先,在低碳技术层面上,针对CCPP和P2G设备在时间上运行不同步的问题,在CCPP和P2G设备中间加设储液罐作为CO_(2)的缓冲站,建立含CCPP、P2G设备、燃气轮机的数学模型并建立阶梯碳交易对IES进行低碳排放约束;其次,为了充分发挥电动汽车负荷和储能的双重特性,以IES的弃风时段和高峰时段制定策略引导电动汽车进行充放电,来进行能量时移;最后,在经济效益层面上,以综合运行成本最低为目标函数,采用MATLAB调用GUROBI求解器进行求解。通过设置不同场景进行对比,结果表明,该调度策略能在提高微电网风电消纳水平的同时,实现系统的低碳经济运行。展开更多
To solve the problem of polymer-bearing effluent of crude oil not reaching the standard,deep treatment system of Fenton oxidation-activated carbon adsorption is established in one refinery,and the most suitable condit...To solve the problem of polymer-bearing effluent of crude oil not reaching the standard,deep treatment system of Fenton oxidation-activated carbon adsorption is established in one refinery,and the most suitable condition of Fenton oxidation reaction is determined.Operation results show that CODCrconcentration of effluent treated by the system could be lower than 50 mg/L,and ammonia nitrogen content is less than 3 mg/L,which meets design requirement.展开更多
Full scale experimental study on nitrogen removal for low-carbon wastewater was conducted in reversed A2/O process in Jiguanshi waste water treatment plant in Chongqing,in order to aid the operation and maintenance of...Full scale experimental study on nitrogen removal for low-carbon wastewater was conducted in reversed A2/O process in Jiguanshi waste water treatment plant in Chongqing,in order to aid the operation and maintenance of similar WWTP. When the proposed measures,such as using 0.1% (volume fraction of wastewater) landfill leachate,shortening HRT by 2/3 in the primary sedimentation tank and controlling DO at 0.5 mg/L in the 3rd section of aerobic zone,are applied,15% of the carbon source can be complemented,the favorable property of activated sludge is achieved,and the nitrogen removal effect is significantly improved. The effluent NH3-N is 2 mg/L and the removal rate is 90%. The effluent TN is 17 mg/L and the removal rate is 54%. The up-to-standard discharge of the effluent is achieved. And after the optimization,the unit electricity consumption also reaches 0.21 kW/h and saves 20%.展开更多
A significant number of birds in the port town of Esperance, Western Australia died in the summer of 2006/2007 and elevated lead levels were found in the kidneys, livers and brains of autopsied birds. These elevated l...A significant number of birds in the port town of Esperance, Western Australia died in the summer of 2006/2007 and elevated lead levels were found in the kidneys, livers and brains of autopsied birds. These elevated lead levels alerted Government authorities to investigate the public health impacts of potential lead contamination in the community resulting from transport of lead carbonate from the Esperance Port. Water samples from domestic rainwater collection systems were collected to determine the extent of heavy metal contamination;19% and 24% of tanks had lead and nickel levels above the Australian Drinking Water Guidelines. The aim of this study was to evaluate whether cleaning of rainwater tanks had reduced exposure to lead and nickel contamination in the community. Follow-up sampling of 176 tanks across Esperance indi-cated that that there had been reductions in both lead and nickel concentrations, but that the reduction has been greater for nickel concentrations. The reduction in nickel concentration was significantly associated with cleaning status, whereas this was not the case for lead. Proximity to the Esperance Port was an impor-tant determinant of lead concentration. Tank and roof characteristics did not significantly influence the fol-low-up lead concentrations. The results suggested that there was ongoing contamination of rainwater tanks from the environment.展开更多
文摘在“双碳”目标背景下,为实现微电网系统的低碳排放和风电消纳最大化,提出了一种含碳捕集电厂(carbon capture power plant,CCPP)及电转气(power-to-gas,P2G)耦合的综合能源系统(integrated energy system,IES)和电车入网(vehicle to grid,V2G)的双层模型优化调度策略。首先,在低碳技术层面上,针对CCPP和P2G设备在时间上运行不同步的问题,在CCPP和P2G设备中间加设储液罐作为CO_(2)的缓冲站,建立含CCPP、P2G设备、燃气轮机的数学模型并建立阶梯碳交易对IES进行低碳排放约束;其次,为了充分发挥电动汽车负荷和储能的双重特性,以IES的弃风时段和高峰时段制定策略引导电动汽车进行充放电,来进行能量时移;最后,在经济效益层面上,以综合运行成本最低为目标函数,采用MATLAB调用GUROBI求解器进行求解。通过设置不同场景进行对比,结果表明,该调度策略能在提高微电网风电消纳水平的同时,实现系统的低碳经济运行。
文摘To solve the problem of polymer-bearing effluent of crude oil not reaching the standard,deep treatment system of Fenton oxidation-activated carbon adsorption is established in one refinery,and the most suitable condition of Fenton oxidation reaction is determined.Operation results show that CODCrconcentration of effluent treated by the system could be lower than 50 mg/L,and ammonia nitrogen content is less than 3 mg/L,which meets design requirement.
基金Project (2009ZX07315-002-01) supported by Water Pollution Control and Management of Major Special Science and Technology
文摘Full scale experimental study on nitrogen removal for low-carbon wastewater was conducted in reversed A2/O process in Jiguanshi waste water treatment plant in Chongqing,in order to aid the operation and maintenance of similar WWTP. When the proposed measures,such as using 0.1% (volume fraction of wastewater) landfill leachate,shortening HRT by 2/3 in the primary sedimentation tank and controlling DO at 0.5 mg/L in the 3rd section of aerobic zone,are applied,15% of the carbon source can be complemented,the favorable property of activated sludge is achieved,and the nitrogen removal effect is significantly improved. The effluent NH3-N is 2 mg/L and the removal rate is 90%. The effluent TN is 17 mg/L and the removal rate is 54%. The up-to-standard discharge of the effluent is achieved. And after the optimization,the unit electricity consumption also reaches 0.21 kW/h and saves 20%.
文摘A significant number of birds in the port town of Esperance, Western Australia died in the summer of 2006/2007 and elevated lead levels were found in the kidneys, livers and brains of autopsied birds. These elevated lead levels alerted Government authorities to investigate the public health impacts of potential lead contamination in the community resulting from transport of lead carbonate from the Esperance Port. Water samples from domestic rainwater collection systems were collected to determine the extent of heavy metal contamination;19% and 24% of tanks had lead and nickel levels above the Australian Drinking Water Guidelines. The aim of this study was to evaluate whether cleaning of rainwater tanks had reduced exposure to lead and nickel contamination in the community. Follow-up sampling of 176 tanks across Esperance indi-cated that that there had been reductions in both lead and nickel concentrations, but that the reduction has been greater for nickel concentrations. The reduction in nickel concentration was significantly associated with cleaning status, whereas this was not the case for lead. Proximity to the Esperance Port was an impor-tant determinant of lead concentration. Tank and roof characteristics did not significantly influence the fol-low-up lead concentrations. The results suggested that there was ongoing contamination of rainwater tanks from the environment.
