Dechlorination effect of slow speed elution on municipal solid waste incineration bottom ash

The bottom ash, accounting for 20% to 30% of the original living garbage, has been a large content source of municipal solid waste in China and incineration treatment becomes the most important garbage disposal method. The water-soluble chloride ions will be released to the environment by the eluent produced from the bottom ash. It has a negative influence on bottom ash treatment and reuse. This study analyzed the changing of residue of chloride ion, ammonium nitrogen, pH value during the elution process by the column simulation experiment. The dechlorination investigation may improve the commercial application of bottom ash by revealed the regular of chloride ion migration under the condition of slow speed elution.