Electro-catalytic oxidation material for wastewater treatment, preparation method and application

用于废水处理的电催化氧化材料及制备方法和应用

Abstract

用于废水处理的电催化氧化材料,包括铁粉30~60%;氧化铝1~2%;氧化镍1~2%;氧化钛2~4%;硅酸铝2~4%;水玻璃3~5%;活性炭粉20~30%;聚乙烯醇1~3%;石墨粉10~20%。上述材料的制备是将原料加水调成稠状物再通过成型机压制成粒状、块状或盘状,脱模后送至烘箱中烘干,再放入高温炉中煅烧,便制得成品率达95%以上的多孔碳电极材料。将多孔碳电极材料置于反应器中,在进水时调节废水PH值并进行曝气及投加双氧水协同工作时产生芬顿反应,对净化垃圾渗滤液NF、RO膜浓缩液等高浓度有机废水处理指标中,COD、氨氮浓度及色度均取得较佳的技术效果,实现了工业废水达标排放的目的。
The invention discloses an electro-catalytic oxidation material for wastewater treatment. The material comprises 30 to 60 percent of iron powder, 1 to 2 percent of aluminum oxide, 1 to 2 percent of nickel oxide, 2 to 4 percent of titanium oxide, 2 to 4 percent of aluminum silicate, 3 to 5 percent of water glass, 20 to 30 percent of active carbon powder, 1 to 3 percent of polyvinyl alcohol, and 10to 20 percent of graphite powder. The material is prepared by the following steps of: adding water into raw materials to form a thick material, pressing the thick material into granules, blocks or discs through a forming machine, demoulding, drying in an oven, and calcining in a high-temperature furnace to obtain a porous carbon electrode material of which the yield reaches 95 percent. The porouscarbon electrode material is put into a reactor; the pH value of the wastewater is regulated and aeration is performed when the water is added, and Fenton reaction is produced when hydrogen peroxide is added for cooperative work; in high-concentration organic wastewater treatment indexes of nano-filtration (NF) or reverse osmosis (RO) membrane concentrate of purified garbage leachate and the like, good technical effects on chemical oxygen demand (COD), ammonia nitrogen concentration and chromaticity are achieved; and the aim of discharging the industrial wastewater with standards is fulfilled.

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