In-situ Chlorine Generation for Water Disinfection

An intimate knowledge of available disinfection processes is a prerequisite in selecting
the most appropriate system. This report is to decide on an in-situ chlorine generation
and its effectiveness to be use in water disinfection. This technology is to eliminate the
hazards of transportation and storage. Also this alternative technology is to lower the
probability of workers exposure to the potential discharge of a toxic vapor cloud
resulting from an attack on chlorine storage room. There are several types of
disinfection that could be generated on-site which are chlorine gas, chlorine dioxide
and sodium hypochlorite. The suitable particular type of on-site generator in this report
is sodium hypochlorite. The sodium hypochlorite was generated in an electrochemical
cell. The electrodes used were MMO-coated titanium as the anode and titanium as the
cathode. The results show that the MMO-coated titanium anode has better performance
than graphite anode. The MMO-coated titanium anode was also better than Ti/RuOz
anode. Under the following conditions, a concentration of as high as 45.42 gil Ch of
Free Available Chlorine was obtained, surfuce area of the anode; 15 cm2
, interelectrode
gap, 0.5 em; current density, 200 rnNcm2
; concentration of NaCl aqueous
solution, 2M; and time, 120 minutes.