DESIGN OF REMOTE COD GROUNDWATER DETECTION INSTRUMENT
At present,artificial sampling and analysis with instruments in laboratory are the main detection method In the field of groundwater quality detection in China.There are many problems that can not meet the development of water quality monitoring,such as,Large sampling error,long detection period,Complicating operation,cannot reflect the change of water pollution,etc.Therefore,A kind of remote water quality COD(chemical oxygen demand)detector is designed based on UV Spectrophotometry and the instrument has the function of automatic pumping and cleaning.it consists of four parts: remote terminal,remote data receiving and transmitting module,water quality COD detection module and water sample extraction and cleaning module.First,the remote terminal sends the signal.Then,the signal received by the remote data transmission module.Then,COD detection module and water extraction and cleaning module action.Finally,the detection of data processed by remote data receiving module sent to remote terminal.The experimental results show that the instrument can complete the testing work in 20min.It can effectively detect the COD concentration of groundwater quality and the resolution can reach 1mg·L-1.it has good sensitivity,accuracy and repeatability,and can be used for on-line monitoring of the vast majority of turbidity water.
Groundwater UV-Spectrophotometry COD Remote control Online monitoring
Y.G.XU Q.LI Y.WU W.W.JI S.CHEN
China Jiliang University,No.258 Xueyuan Road,Hangzhou,China
国际会议
国际测量技术联合会(IMEKO)2017年国际测量技术研讨会
杭州
英文
107-113
2017-09-04（万方平台首次上网日期，不代表论文的发表时间）