TURBID WATER TREATMENT METHOD

摘要

PROBLEM TO BE SOLVED: To ensure good working environment and improve working efficiency in underwater construction work involving diving work in port facilities, a dam, a river or the like.SOLUTION: A turbid water treatment method includes the steps of: isolating a target range of turbid water treatment from an outside water area by installing partition walls 10 in water subjected to the turbid water treatment to surround the target range of the turbid water treatment; inserting an air injection pipe 20 into the target range of the turbid water treatment; injecting air from a tip part of the air injection pipe 20 into the target range of the turbid water treatment to generate vertical water flows; adding a coagulating material 40 to the target range of the turbid water treatment; continuing the air injection for a predetermined time; and stopping the air injection to leave at rest for a predetermined time.