Method for decomposing PCB

The present invention provides a PCB decomposing apparatus capable of decomposing PCB efficiently. The PCB decomposing apparatus comprises a PCB extracting container for extracting PCB from a PCB-containing material with an organic solvent. A distilling tower provided on the downstream side of the P...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	OGATA KAN, FUKUZUMI TADATSUGU, SHINDO NAOKI, TATEISHI MASAKAZU, TSUCHIYAMA YOSHIHIKO, YAMAUCHI YASUHIRO, HOKAO NOBUHIRO
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING ORPROTECTING AGAINST HARMFUL CHEMICAL AGENTS CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY DISPOSAL OF SOLID WASTE FIRE-FIGHTING HUMAN NECESSITIES LIFE-SAVING METALLURGY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL RECLAMATION OF CONTAMINED SOIL SOIL THEIR RELEVANT APPARATUS TRANSPORTING TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Beschreibung
Zusammenfassung:	The present invention provides a PCB decomposing apparatus capable of decomposing PCB efficiently. The PCB decomposing apparatus comprises a PCB extracting container for extracting PCB from a PCB-containing material with an organic solvent. A distilling tower provided on the downstream side of the PCB extracting container distills the organic solvent to separate the PCB. A primary reactor provided on the downstream side of the distilling tower includes a nozzle for supplying aqueous Na2CO3 solution and a nozzle for supplying an oxidizing agent into the container. A liquid cyclone provided on the downstream side of the primary reactor can remove Na2CO3 having a large particle size. A secondary reactor formed by a long pipe is connected to the liquid cyclone. A gas-liquid separator provided on the further downstream side of the secondary reactor can separate a gas from a solution. A film separator separates treated water into purified water and a concentrated solution, and the purified water is supplied as circulating water to the upstream side of a pressure pump.