Patent ID: 6949226

Claim:
A waste treatment equipment comprising: a pyrolytic reactor which causes pyrolysis of waste to generate pyrolytic gases and pyrolytic residue mainly comprising non-volatile constituents; separating means for separating said pyrolytic residue into combustible constituents and incombustible constituents; a combustion melting furnace to which said pyrolytic gases and said combustible constituents are fed, and which causes combustion thereof and discharges molten slag and flue gases; first flue gas treating means for removing dust from said flue gases; second flue gas treating means dechlorinating the flue gases from said first flue gas treating means by adding a dechlorinating agent; a separator which separates water-insoluble constituents not dissolved in water from an aqueous solution containing a residue of dechlorination dissolved therein by adding water to a residue of dechlorination generated by said second flue gas treating means; a pH modifier which adjusts pH of a remaining aqueous solution after separation of the water-insoluble constituents by said separator; at least one dioxin removing unit which removes dioxin and the like from the residue of dechlorination generated by said second flue gas treating means and/or from the aqueous solution of which pH has been adjusted by said pH modifier; and wherein a sodium-based dechlorinating agent comprising a mixture of sodium hydrogencarbonate and a hydrophilic anti-caking agent, and having an angle of repose of 40° or more, a dispersibility of less than 50 and a floodability index value of less than 90, serving as said dechlorinating agent, is added to said second flue gas treating means.