电流互感器常见故障的处理方法

正互感器是一种利用电磁原理进行电压、电流变换的变压器类设备,在电力系统广泛被使用,它是将电力系统一次回路中的电量信息按一定的比例关系传递到二次回路提供给测量仪表和继电保护装置等二次设备,对系统进行监     

安全小字典（22）

什么是电焊机的空载电压？手工电弧焊机的空载电压一般是多少？；为什么电焊机会造成高电压转移？；     

齐鲁石化公司局域电网谐波源的治理

根据齐鲁石化公司局域电网谐波源的测试结果，并结合公司新区电网的特点，确定了谐波源治理方案，并在工程中实施。测试结果表明，治理效果达到了设计要求，电网的电压畸变率被控制在国家标准允许的范围之内。     

瞬态电压电流对控制设备的影响

本文分析了在驱动电动机电路中，瞬态干扰对控制设备的影响，提出了抑制干扰需要采取的措施。     

工业生产中的静电防护

印刷行业的静电 　　造纸过程中,由于电解质含量较少,施胶物质含量过多,某些填料含量偏少,纸张在烘干、压光过程中受到高温和压力的作用,使纸张带高电压的静电.……     

回转窑生产轻烧镁粉中二氧化碳的回收

对当前轻烧镁粉生产过程中存在的问题及以废菱镁矿粉为原料，利用外加热回转窑生产活性轻烧镁粉和回收二氧化碳废气的环保新工艺。     

Denitrification potential enhancement by addition of external carbon sources in a pre-denitrification process

The aim of this study is to investigate the denitrification potential enhancement by addition of external carbon sources and to estimate the denitrification potential for the predenitrification system using nitrate utilization rate （NUR） batch tests. It is shown that the denitrification potential can be substantially increased with the addition of three external carbon sources, i.e. methanol, ethanol, and acetate, and the denitrification rates of ethanol, acetate, and methanol reached up to 9.6, 12, and 3.2 mgN/（g VSS.h）, respectively, while that of starch wastewater was only 0.74 mgN/（g VSS,h）. By comparison, ethanol was found to be the best external carbon source. NUR batch tests with starch wastewater and waste ethanol were carried out. The denitfification potential increased from 5.6 to 16.5 mg NO3-N/L owing to waste ethanol addition. By means of NUR tests, the wastewater characteristics and kinetic parameters can be estimated, which are used to determine the denitrification potential of wastewater, to calculate the denitrification potential of the plant and to predict the nitrate effluent quality, as well as provide information for developing carbon dosage control strategy.     

挑选灯具六项注意

灯具是电器产品，除外观质量外，其电器性能相当重要，消费者选购灯具时应注意以下几个方面：