System for circulating miscellaneous waste liquor from incinerator

Abstract

Abstract PURPOSE:To treat an excess circulating filtrate with the smallest possible economical burden, by adding neutralizing and oxidizing agents, etc. to miscellaneous waste liquor from an incinerator, separating said liquor into a liquid and solid matter, cyclically using necessary miscellaneous waste liquor only, and emergently draining the remainder, when supplied circulating water exceeds necessary circulating water. CONSTITUTION:Waste liquor 22 other than raw garbage juice formed in an incineration plant is introduced into a reservoir tank 11, wherein a neutralizing agent a, an oxidizing agent b, a reducing agent c, a scavenger d for heavy metals, an absorbent e for organic substance and a dehydrating assistant f are added to it. At the same time, air is injected into it from a blower 12, to mix and react the liquid waste in the tank 11 with said additives. Thereafter, the reacted liquid mixture is separated from solid into dehydrated cake 8 and a filtrate 9 by a filter press 6. Said filtrate is used for the purpose of cooling exhaust gas, etc. Hereon, when the level of the filtrate 9 to be returned to a filtrate reservoir tank 10 exceeds an upper limit, the filtrate 9 is drained outside the system from the filter press 6 by the operation of a level gauge 17 to close an electromagnetic valve 15 and to open another electromagnetic valve 16. Consequently, excess water can be freely drained at a necessary time, so that arrangements for the disposal of drained water is not necessary and that the quality of the circulating water can be improved. Thus, the plugging of piping and equipment can be completely eliminated.

Inventors

• 👤 Masao Yagyu
• 👤 柳生　雅雄

Bibliographic Details