石墨-活性炭纤维复合电极电吸附处理含盐废水的研究

高盐废水是目前水处理领域的难点,作为一种新型的除盐技术,电吸附技术具有众多优点.本文研究了一种新型碳基复合材料,石墨-活性炭纤维复合电极,并考察了其应用于电吸附的影响因素和除盐效果.在电压为1.6 V,停留时间为60min,极板间距为1 cm时电吸附装置的除盐效果最优.用其分别对精制棉黑液和叶绿素铜钠废水进行了处理.电极对数为8对时对经酸析处理后的精制棉黑液的电导率和COD的去除率分别达到58.8%和75.6%;电极对数为6~8时对叶绿素铜钠生产废水的电导率的去除率能超过50.0%,COD的去除率约为13.5%.

Research on Treatment of High Salt Wastewater by the Graphite and Activated Carbon Fiber Composite Electrodes

High salinity wastewater is one of the difficulties in the field of wastewater treatment. As a new desalination technology, electrosorption technology has many advantages. This paper studied a new type of carbon-based electrodes, the graphite and activated carbon fiber composite electrodes. And the influencing factors of electrosorption and its desalination effect were investigated. The electrosorption device had optimal desalination effect when the voltage was 1.6 V, the retention time was 60 min and the plate spacing was 1 cm. The graphite and activated carbon fiber composite electrodes were used to treat the black liquor of refined cotton and sodium copper chlorophyll wastewater to investigate its desalination effect. When the electrodes were used to treat the black liquor of refined cotton after acid treatment, the removal rate of conductivity and COD reached 58.8% and 75.6% respectively when 8 pairs of electrodes were used. And when the electrode was used to treat the sodium copper chlorophyll wastewater, the removal rate of conductivity and COD reached higher than 50.0% and 13.5% respectively when 6-8 pairs of electrodes were used.