Abstract:
Integrated sono-alternative and direct current Electrocoagulation process is simple technology
needed in the treatment of domestic wastewater only by applying electric current with sacrificial
electrode. The main objective of this study was to analyze the influence of Integrated Sono Alternative and Direct –current on electrocoagulation process in terms of percent COD, percent
color and percent turbidity removal from domestic wastewater. Furthermore; this study was
conducted to explore and to capture the application of Sono Alternative and Direct current
electrocoagulation process in terms of percent color removal efficiency by UV
spectrophotometer, percent Turbidity removal efficiency by turbidometery and percent COD
removal efficiency by COD digester and using chemical that may use for the determination of
COD removal along with electrical energy consumption. The data obtained from the laboratory
were analyzed by using Response Surface Methodology (RSM). The percentage of COD, color
and turbidity removal was about 82.6%, 97.5 and 95.28% respectively with Direct – Current
Electrocoagulation (DCE),For Alternating–Current Electrocoagulation (ACE), it was 86.58%,
98.3% and 96.2%, respectively and COD ,color and turbidity removal were about 88.6%, 98.7
and 98.27 %with sono-direct current (SDCE) and 92.5%, 99.9% and 99.76%, with sono
alternative current(SACE), at the optimal experimental condition of COD – 960 mg/L, initial
wastewater pH – 6.8, current density – 0.4 A/dm2, inter–electrode spacing – 1 cm, combination
of electrode – Al/Al, and treatment time 1 hr. The ACE and SACE wer more successful in
eliminating %COD, % color and %turbidity with less electrical energy consumption than DCE
and SDCE process In DCE and SDCE, the formation of an impermeable oxide layer on the
cathode and the occurrence of corrosion on the anode due to oxidation have decreased the
efficiency of this process compared to the ACE and SDCE process. As a result, experimental
findings have shown that with less electrical energy usage and process efficiency, the ACE and
SACE could be a more promising solution to removing pollutants from wastewater and domestic
effluent than the DCE and SDCE method
