Waste Solvent used in Photoelectric Wastewater Denitration and Recycling Benefit Evaluation Research

  • 周 子欽

Student thesis: Doctoral Thesis


The main purpose of this article is to collect and analyze the waste liquid produced by the use of solvents in the domestic color thin film liquid crystal display (TFT-LCD) and optoelectronic manufacturing industries as the carbon source needed to remove the nitrogen source organisms in the wastewater The use of waste solvents as carbon sources can not only reduce the cost of purchasing external carbon sources but also solve the environmental and ecological impacts caused by waste liquid distillation technology recovery incineration or mixed treatment with other inorganic wastewater For subsequent waste water recycling and reuse unit blockage can be reduced and the efficiency of waste water recycling can be improved And the effluent guality meets the effluent control standards of the park At the same time the MBR membrane bioreactor improves the problem of suspended sludge produced by the effluent water of organisms which affects water quality and achieves the potential of waste water recycling and reuse Recycling 2000 m3 of wastewater after biological treatment is achieved every day reducing the use of tap water In addition to the benefits to the society economy and ecological environment it also reduces the cost of water resources treatment and reduces the investment and corresponding investment in sewage discharge Operation and treatment costs have also improved the ecological environment and promoted many economic developments in the society and ensured human health to reduce the harm of diseases increased water supply for other industries and avoided economic losses caused by water shortages The experimental test results reduce the daily consumption of tap water by 1600 m3 the monthly recovery benefit is NT$720 000/month the reduction of methanol usage is NT$457 500/month and the waste liquid removal fee is deducted NT$180 000 The overall monthly savings Waste water recycling chemicals and cleaning costs are NT $997 500
Date of Award2021
Original languageEnglish
SupervisorJan-Mou Leu (Supervisor)

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