The Experimental Analyses on the Solidified Effect of Heavy Metals in the Ceramsite Calcined by the Composite Materials of Electroplating Sludge and Seabeach Sludge
The electroplating sludge is a kind of solid waste material in the process of handling electroplating waste water, which has indefinite amount of harmful heavy metals hard to dissolute. The electroplating factory must seek economical and valid technology to deal with the sludge harmlessly, along with the reinforcement of the country law administer power to the discharge of the solid wastes. Since the last ten years, the handling technique to electroplating sludge has rapid advance, which mainly include solidification or stabilization technique, filling into the sea or pile-up, creature method, recycling heavy metal[2,3], iron-oxygen method, burning brick[8,9] and agriculture function and so on. A key handling technique is the recycling heavy metals from electroplating sludge in recent years, whose research fruits are no mature quietly from an area of technique view and the oddments still need to cope with harmlessly come from recycling heavy metals. This is a kind of technique of low economic yield ratio, low scale benefit and higher production costs from a point of economic view. It is difficult to accept for a mass of small electroplating enterprise in China if there is not encouragement and support from the government. The solidification method is the final handling method for harmful and dangerous waste in west country in recent years. Cementing solidification method is adopted the most effectively at present. It is satisfied with the aim of harmlessly handling electroplating sludge but unsatisfied with the requirement of utilizing electroplating sludge as a resource and disadvantageous to build recycling type economics. Making use of the electroplating sludge to product building materials may be an economical and valid approach to handle it harmlessly as a resource. The solidified effects on heavy metals of electroplating sludge at 1200°C high temperature burnt were analyzed in the paper, at the basis of feasible studies on the technology of burning ceramsite by the composite of electroplating sludge and seabeach sludge.
Hui Wu, Xiao-Qian Qian, Chong-zhi Li and Fei Li
H. D. Yan "The Experimental Analyses on the Solidified Effect of Heavy Metals in the Ceramsite Calcined by the Composite Materials of Electroplating Sludge and Seabeach Sludge", Key Engineering Materials, Vol. 477, pp. 42-48, 2011