PRODUCTION OF LIQUID FERTILIZER IN SEWAGE-TREATMENT PLANT AND APPARATUS THEREFOR

摘要

PURPOSE:To grow flowering plants in a sewage-treatment plant by effectively utilizing treated water in the sewage-treatment plant. CONSTITUTION:Treated water generated in a sewage-treatment plant is sterilized in the first chlorination sterilization tank 51 and filtered through a filter 52. The filtered water is then sterilized in the second chlorination sterilization tank 53 and oxygen is subsequently supplied thereto in a storage tank 54 so as to control the amount of the dissolved oxygen to >=4mg/l. Thus, the objective liquid fertilizer is produced.