DEVELOPMENT OF AN AUTOMATED BATCH-PROCESS SOLAR WATER DISINFECTION SYSTEM

Authors

  • OO Nwoke NATIONAL CENTRE FOR ENERGY RESEARCH AND DEVELOPMENT, UNIV. OF NIGERIA, NSUKKA. ENUGU STATE, NIGERIA
  • CC Mbajirogu DEPT. OF AGRICULTURAL AND BIORESOURCES ENGINEERING, UNIV. OF NIGERIA, NSUKKA., ENUGU STATE NIGERIA
  • IP Owoh NATIONAL CENTRE FOR ENERGY RESEARCH AND DEVELOPMENT, UNIV. OF NIGERIA, NSUKKA. ENUGU STATE, NIGERIA
  • EC Anoliefo DEPARTMENT OF ELECTRONIC ENGINEERING, UNIVERSITY OF NIGERIA, NSUKKA, ENUGU STATE NIGERIA

DOI:

https://doi.org/10.4314/njt.361.1240

Keywords:

water, disinfection, Escherichia Coli, solar, photo-catalysis

Abstract

One of the shortcomings of solar disinfection of water (SODIS) is the absence of a feedback mechanism indicating treatment completion. This work presents the development of an automated batch-process water disinfection system aimed at solving this challenge. Locally sourced materials in addition to an Arduinomicro processor were used to control the algorithm of the water disinfection system. A comparison of solar radiation sensing accuracy of the system to the Campbell Stokes instrument using student’s t-test showed no significance difference between the two data sets at p=0.05. Test conducted with Escherichia Coli spiked water shows that a 6 log reduction in CFU/ml was achieved within 15 minutes for an average global solar irradiance of 400 W/m2. The system disinfected 11 litres of water in a day for solar radiation of 8.5 MJ/m2/day and Escherichia coli concentration not exceeding 106 CFU/ml.

 

http://dx.doi.org/10.4314/njt.v36i1.35

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Section

Agricultural, Bioresources, Biomedical, Food, Environmental & Water Resources Engineering

How to Cite

DEVELOPMENT OF AN AUTOMATED BATCH-PROCESS SOLAR WATER DISINFECTION SYSTEM. (2016). Nigerian Journal of Technology, 36(1), 290-295. https://doi.org/10.4314/njt.361.1240