The present invention provides a soil purification system capable of receiving and effectively purifying a large amount of VOC-containing soil generated in a large number of lands over a wide area. A soil purification system (1) includes a soil storage building (5), a calcium oxide sprayer (12), a tractor (15), a carbonated water spray device (16), a boiler (30), and a carbonated water generation system (40). The carbonated water spray device 16 includes a plurality of partition sprayers 17 that individually spray carbonated water to a plurality of carbonated water spray sections set in the soil storage building 5, and carbonated water spray modes of these partition sprayers 17. And a carbonated water spray controller for controlling The combustion furnace 31 of the boiler 30 burns hydrocarbon-based gaseous fuel with the air in the soil housing building 5 to treat or remove VOC in the air. The carbonated water generation system 40 generates carbonated water in a pressurized state from the combustion gas of the combustion furnace 31 and supplies it to the carbonated water spraying device 16. [Selection] Figure 1【課題】広い地域にわたって多数の土地で発生する大量のＶＯＣ含有土壌を受け入れて効果的に浄化することができる土壌浄化システムを提供する。【解決手段】土壌浄化システム１は、土壌収容建屋５と、酸化カルシウム散布車１２と、トラクタ１５と、炭酸水散布装置１６と、ボイラ３０と、炭酸水生成システム４０とを備えている。炭酸水散布装置１６は、それぞれ土壌収容建屋５内に設定された複数の炭酸水散布区画に個別に炭酸水を散布する複数の区画散布器１７と、これらの区画散布器１７の炭酸水散布態様を制御する炭酸水散布制御器とを備えている。ボイラ３０の燃焼炉３１は、土壌収容建屋５内の空気で炭化水素系の気体燃料を燃焼させ、該空気中のＶＯＣを処理又は除去する。炭酸水生成システム４０は、燃焼炉３１の燃焼ガスから加圧状態にある炭酸水を生成して炭酸水散布装置１６に供給する。【選択図】図１
