A prototype for on-site generation of chlorinated disinfectant for use in rural aqueducts  

作　　者：Diana Marcela Cuesta Parra Felipe Correa Mahecha Andrés Felipe Rubio Pinzon Davidcamilo Ramirez Bustos Leonel Alveyro Teran Llorente Miguel Fernando Jimenez Jimenez 

机构地区：[1]Chemical and Environmental Engineering Department,Fundacion Universidad de America,Bogota 117111,Colombia [2]Chemical Engineering Department,Fundacion Universidad de America,Bogota 117111,Colombia [3]Mecanical Engineering Department,Fundacion Universidad de America,Bogota 117111,Colombia

出　　处：《Water Science and Engineering》2024年第1期33-40,共8页水科学与水工程（英文版）

基　　金：supported by the America University,the Swiss Agency for Development and Cooperation,and the Central Technical Institute.

摘　　要：Sodium hypochlorite has significant potential as a sanitation solution in hard-to-reach areas.Few studies have investigated the optimal electrolysis parameters for its production with volumes greater than 1o L.This study evaluated sodium hypochlorite production through electrolysis in a 22-L prototype and identified the optimal operating parameters.Tests were performed using graphite electrodes with areas of 68.4 cm^(2) at the laboratory scale and 1865.0 cm^(2) at the prototype scale.A design for experiments with different operating times,chloride concentrations,and electric current intensities was developed.The optimal operating time,sodium chloride concentration,and current intensity at the laboratory scale were 120 min,150 g of chloride per liter,and 3 A,respectively,leading to the production of 5.02 g/L of the disinfectant with an energy efficiency of 12.21 mg of Cl_(2) per kilojoule.At the prototype scale,the maximum sodium hypochlorite concentration of 3.99 g of chloride per liter was achieved with an operating time of 120 min,a sodium chloride concentration of 100 g of chloride per liter,and a current intensity of 70 A,reaching an energy efficiency of 42.56 mg of Cl_(2) per kilojoule.In addition,this study evaluated the influences of the chloride concentration,current intensity,and operating time on the production of sodium hypochlorite at the two scales,and formulated the equations showing the trends of sodium hypochlorite production and energy efficiency in the electrochemical systems.The 22-L prototype model for production of this oxidizing substance is promising for disinfection of large volumes of water in areas that are difficult to access.

关 键 词：DISINFECTION ELECTROLYSIS Energy efficiency Optimization Sodium hypochlorite 

分 类 号：X703[环境科学与工程—环境工程]