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|Title: ||離子交換樹脂廠內再利用可行性之研究;A feasibility study on the recycling of Ion Exchange Resin in plants|
|Keywords: ||離子交換;水回收;超純水;管柱試驗;機台分流;ion exchange;water recycling;ultrapure water;column test;machine shunt|
|Issue Date: ||2015-09-23 15:30:01 (UTC+8)|
;The high-tech electronics industry has become one of the important industries in Taiwan in the 21st century, and the ability to convert wastes to useful resources is a critical factor that determines the success of the technological industry. Therefore, with rapid economic and technological developments, it is essential for the electronics industry to develop feasible applied technologies for the recycling of ion exchange resin (IER), so that companies can save costs and be more competitive.
The subject of this study is the waste IER that has been recovered after being used in the IER tower of the electronics ultrapure water system. The wet cleaning process implemented in plants consumes vast quantities of water during the manufacturing process. Therefore, the first step is to study the waste water quality of the manufacturing process and investigate the characteristics of wastewater collected from different units simultaneously. Next is the design of drainpipes for shunting water as a safety measure before the wastewater is channeled into the recycling equipment. Subsequently, an annual amount of recyclable resin of 3,500 L is being used for recycling research to determine the optimal operating parameters. An evaluation of the economic benefits of wastewater recycling is finally made based on existing conditions.
The study findings indicate that the recovered IER can be regenerated using the regenerating agent. When the amount of the regenerating agent was controlled at 5 BV (300 ml), the best performance (with a regeneration rate of up to 98%) was achieved with 4% NaOH.
From the perspectives of sustainable water resources management and clean production, our in-depth analysis shows that there is a much higher feasibility of treating wastewater and recycling IER using the proposed system than direct discharge after wastewater treatment. The proposed recycling method not only enhances recovery rates during the manufacturing process, but can also help derive economic benefits while reducing the impact on the environment.
|Appears in Collections:||[環境工程研究所碩士在職專班] 博碩士論文|
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