SEAWATER PRE-TREATMENT APPARATUS

摘要

The purpose of the present invention is to provide a seawater pre-treatment apparatus capable of favorably growing and maintaining biofilms in multiple series-connected filters by appropriately supplying nutrient components to the respective filters. The present invention relates to a seawater pre-treatment apparatus, which is used when desalinating by removing salts in the seawater. The seawater pre-treatment apparatus is characterized in being provided with: a supply pipe (21) for supplying the seawater; multiple filters (16), which have a particulate filter material and a biofilm; connecting pipes (23) for connecting the multiple filters in series; multiple bypass pipe (24) for connecting each of the multiple filters to the supply pipe; and respective multiple adjustment valves (26) provided on the multiple bypass pipes to adjust flow rate.