US 2025/0353764 A1 · WATER TREATMENT DEVICE AND WATER TREATMENT METHOD

Abstract

This water treatment device is characterized by having: a first biological treatment tank in which water being treated that contains ammonia nitrogen is biologically treated while being continuously channeled in; a second biological treatment tank in which first treatment water that is obtained through treatment in the first biological treatment tank is biologically treated while being continuously channeled in; a bypass line that bypass-channels some of the water being treated to the second biological treatment tank so as to bypass the first biological treatment tank; an ammonia nitrogen concentration meter that measures the concentration of ammonia nitrogen in second treatment water that is obtained through treatment in the second biological treatment tank; and a control unit that controls the channel amount of water being treated that flows through the bypass pipeline on the basis of the ammonia nitrogen concentration measured by the ammonia nitrogen concentration meter.

Claims8

Dependent claims

A water treatment having:

a first biological treatment tank for biologically treating with autotrophic bacteria a water to be treated containing ammonia nitrogen, while the water to be treated flows continuously into the first biological treatment tank,
a second biological treatment tank for biologically treating with autotrophic bacteria a first treated water that has undergone treatment in the first biological treatment tank, while the first treated water flows continuously into the second biological treatment tank,
a bypass line through which a portion of the water to be treated bypasses the first biological treatment tank and flows into the second biological treatment tank,
an ammonia nitrogen concentration measurement unit that measures an ammonia nitrogen concentration of a second treated water that has undergone treatment in the second biological treatment tank, and
a control device that controls a flow rate of the water to be treated flowing through the bypass line based on the ammonia nitrogen concentration measured by the ammonia nitrogen concentration measurement unit.

2 more elements

A water treatment method having:

a first biological treatment step of biologically treating a water to be treated containing ammonia nitrogen with autotrophic bacteria in a first biological treatment tank, while the water to be treated flows continuously into the first biological treatment tank,
a second biological treatment step of biologically treating, with autotrophic bacteria in a second biological treatment tank, a first treated water that has undergone treatment in the first biological treatment tank, while the first treated water flows continuously into the second biological treatment tank,
an inflow step of causing a portion of the water to be treated to bypass the first biological treatment tank and flow into the second biological treatment tank, and
an ammonia nitrogen concentration measurement step of measuring an ammonia nitrogen concentration of a second treated water that has undergone treatment in the second biological treatment tank, wherein
in the inflow step, a flow rate of the water to be treated bypassing the first biological treatment tank and flowing into the second biological treatment tank is controlled based on the ammonia nitrogen concentration measured in the ammonia nitrogen concentration measurement step.

2 more elements

Dependencies are inferred from the claim text.

Water treatment device and water treatment method

Life of this patent

Water treatment device and water treatment method

Life of this patent

Abstract

Claims8