抄録
Using a barrel of 70 liters capacity, the acid treatment of the waste liquor has been carried out with promising results. It has been observed that passing live steam into the waste was effective to both sedimentation and filtration of the flocculum formed. It is to be noted that the thick washing waste (Bé. 7-5) was found to be able to reuse with good advantage for digesting straw and the used paper. In this way the amount of hydroochloric acid was as much reduced as by 60 per cent. It has also been noticed that the original waste can be used for conglomerating briquet and that the precipitate obtained on the acid treatment can safely be used as boiler-fuel since its sulfur content amounts to less than 1 per cent on dry basis.
