US12570560USUSPTO Grant XML

Water treatment method and water treatment apparatus

A water treatment method includes a microbubble generating step (S 101 ) of generating microbubbles in water to be treated containing at least calcium ions and producing water to be treated containing microbubbles, a water softening step (S 102 ) of crystallizing calcium ions contained in the water to be treated containing the microbubbles as calcium carbonate and removing the calcium carbonate, and a reverse osmosis membrane treatment step (S 103 ) of separating the water to be treated, from which the calcium carbonate has been removed, into reverse osmosis membrane treated water and reverse osmosis membrane concentrated water using a reverse osmosis membrane.

Patent

Brief

Patent brief

Problem

How can microplastics and similar contaminants be removed from wastewater?

Novelty

The front-page text suggests a specialized implementation detail worth closer review.

Uses

Patent review

Assignee

Yokogawa Electric Corporation

Published

Mar 10, 2026

Inventors

Yasuhiro Matsui

Domain

Environmental systems

Plain-English summary

Problem

How can microplastics and similar contaminants be removed from wastewater?

Solution

water treatment method includes a microbubble generating step (S 101 ) of generating microbubbles in water to be treated containing at least calcium ions and producing water to be treated containing microbubbles, a water softening step (S 102 ) of crystallizing calcium ions contained in the water to be treated containing the microbubbles as calcium carbonate and removing the calcium carbonate, and a reverse osmosis membrane treatment step (S 103 ) of separating the water to be treated, from which the calcium carbonate has been removed, into reverse osmosis membrane treated water and reverse osmosis membrane concentrated water using a reverse osmosis membrane.

Key novelty

The front-page text suggests a specialized implementation detail worth closer review.

Applications

Patent review

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