WATER PURIFYING TREATMENT DEVICE

摘要

PURPOSE:To obtain a highly reliable water purifying treatment device by providing a high performance water purifying part consisting of an activated carbon packed part and a zeolite holding bed receiving zeolite as an activated carbon holding bed to a water purifying treatment system. CONSTITUTION:A high performance water purifying part consisting of an activated carbon packed part 9 and a zeolite holding bed 10 receiving zeolite as an activated carbon holding bed is provided to a biological activated carbon treatment tower 11. As a result, an initial rising period having become a problem in biological treatment is not required by utilizing the ammonia adsorbing characteristic of zeolite. Even when the concn. of ammonia in raw water suddenly becomes high at the steady period of biological activated carbon treatment, the zeolite holding bed (auxiliary material) acts in order to provide the buffering properties of biological treatment and is used as a biological zeolite holding bed to enhance a nitration speed at the time of low water temp.