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ECONOMIC VIABILITY OF INVESTING IN A WASTE WATER TREATMENT PLANT USING ELECTROCHEMICAL CLEAN-UP TECHNIQUE
Abstract
The purpose of this research was to evaluate the viability of investment into a waste water treatment plant using electrochemical clean-up technique which could replace the existing waste water treatment plant operating on reverse osmosis principle. The evaluation was performed from the technological and economical point of view. First, a pilot waste water treatment plant was built within the existing facility and operation parameters were optimized. Next, the efficiency of waste water purification was assessed based on compliance with legislative requirements regarding the content of chemical residues in effluent water. After that, the investment and operating costs were studied from the cash flow aspect. The evaluation of potential replacement of waste water treatment by reverse osmosis with the treatment by electrochemical technique revealed that there were no significant changes in the workflow and that effluent water fulfilled all legislative requirements regarding the content of chemical residues. Also, it was established that the payback period of the investment into an electrochemical waste water treatment plant was shorter than the lifetime of such plant. In addition, these investment and operating costs were lower than the costs of running the existing waste water treatment plant operating on reverse osmosis principle in the same time period. The estimation of net present value of cash flow when using the electrochemical waste water treatment process and when using the reverse osmosis process as regards investment and operational costs was carried out. It was established that this value is higher when the electrochemical process is used. Based on these findings, it can be concluded that the investment in electrochemical waste water treatment plant is reasonable from all aspects studied.
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