化纖製程廢水處理回收再利用之研究

Treatment of Chemical Fiber Process Wastewater for Reuse.

林淇松(Lin, C. S.)

指導教授 ： 林勝雄

元智大學/工程學院/化學工程與材料科學學系/碩士(1996年)

摘要

本研究的目的，則是針對化學纖維工廠中的製程廢水和排放水做探
討，希望廢水能經處理後再重回製程使用。(一)在化纖廠排放水回收處理
、再利用實驗方面，分別以化學法和物理方法為主要之處理單元。(A)化
學方法先以電芬法處理其排放水，接續以化學混凝處理，後續再使用離子
交換法時，其處理的效果，可達鍋爐用水的標準。(B)物理方法將排放水
經薄膜超過濾處理，之後使用活性碳吸附法吸附廢水中的有機質，再接續
使用離子交換法，其處理後的效果亦可達鍋爐用水的標準。(二)在化纖製
程廢水的處理與回收再利用之實驗，我們分別以化學方法和物理方法混合
使用。先將混濁乳白色的化纖製程廢水經化學混凝處理，之後再使用活性
碳吸附法處理，再經CT薄膜或PA薄膜逆滲透處理，則水質可達放流水排放
標準。如再接續使用離子交換樹脂法處理，則可達一般工廠製程用水與鍋
爐超純水的使用標準。最後，也做總處理程序的經濟評估，結果發現單元
處理的費用與現場實際操作的處理費用頗為一致。

關鍵字

化纖 ； 薄膜 ； 逆滲透 ； 回收再利用 ； 活性碳 ； 吸附

並列摘要

The purpose of this study is to treat the wastewater from a
chemical fiberplant for possible reuse. According to the
principle they employed, the treat-ment methods considered in
this study can be approximately divided into the chemical and
physical treatment methods. The wastewaters include the
wastewaterderived directly from various processes and the
treated wastewater from the wastewater treatment plant.(1)
Treatment of wastewater from secondary treatmentplant:The
primary treatment methods used consist of enhanced
electrochemicalmethod, chemical coagulation and ion exchange.
After such a combined treatment,the water quality is excellent
and amply meets the reuse standards as the process water.As an
alternative, the ultrafiltration in conjunction with ion
exchange was attempted.The combination was also found to be able
to achieve similarly excellent results.(2)Treatment of process
wastewater:Due to its muchhigher pollutant content, both
combined methods employed in the above processbecame
insufficient to meet the reuse standards.Instead, additional
units, suchas activated carbon adsorption and reverse osmosis,
were found to be necessary.The water quality from the treatment
process would be expected to be quite high.Indeed, it exceeded
the water quality requirements for boilers by a significant
margin and definitely was better than the process water.
Finally, economic assessment of the overall treatment processes
were also conducted. Theunit treatment cost was found to be in
line with those expected in the currentpractice.

並列關鍵字

Chemical Fiber ； Membrane ； Reverse Osmosis ； Recovery for Reuse ； Activated Carbon ； Adsorption