Design and Construction of Laboratory System To Treat and Reduce Wastewater Pollution in the Alcohol Industrytle

This Alcohol industry wastewater is an unwanted residual liquid waste that is generated during the alcohol production process and the resulting pollution is one of the major environmental problems. Despite standards for effluent quality, untreated or semi-treated effluents often pollute water sources. Alcohol distillation wastewater with its own unpleasant odor is a serious threat to water quality. The constant production of distilleries, on the one hand, and the strict legal regulations for the disposal of its wastewater, on the other, have necessitated the need to develop new technologies to create an efficient and economical process to improve the effluent flow of these factories[۱]. One of the best and cheapest methods of industrial wastewater treatment is the use of biological processes such as anaerobic reactors (UABR) and aeration reactors. But for alcoholic wastewater, due to the high percentage of organic and inorganic substances, the presence of aromatic toxins, especially phenols, stable brown color and low pH, the efficiency of aeration reactors due to high energy consumption and high oxygen consumption rate is very low. This process will still be dark, even if it results in significant removal of COD[۲]. The color of melanoidins is hardly affected by conventional biological methods such as methane fermentation and activated sludge process[۳,۴], and it is very difficult to achieve ideal conditions in this type of reactor, but it seems that anaerobic processes if Properly designed, it can improve the chemical quality of Winas to some extent . Based on studies and experimental experiments, one treatment method alone is not effective and serialization of treatment processes improves the processes. In this study, by performing pre-treatment by chemical proxy electrocoagulation method, the effluent compounds of alcohol factories are converted into simpler compounds as much as possible to facilitate their biological decomposition and can be accepted in biological treatment plants. In designing and constructing a laboratory system, comparing the electrocoagulation and proxy electrocoagulation processes, as well as integrating the electrocoagulation prophylaxis process and ۵ days anaerobic biological treatment, it was found that the combination of electrocoagulation and anaerobic proxies provides better results than other methods. .In this process, with energy consumption of ۲۴ kWh per cubic meter, the COD removal efficiency ۶۲.۱% and color removal efficiency ۹۱.۹۴% were obtained. Also the wastewater pH rose from ۴.۴۰ to ۵.۶۰. The effect of electrocoagulation proxy on TDS test parameter and electrical conductivity was not significant.