Antibacterial processing agent for water treatment, method for producing antibacterial processing agent for water treatment, and water treatment method

Abstract

Disclosed are: an antibacterial processing agent which is capable of releasing silver ions at a just enough concentration in clean water such as drinking water or circulating water, thereby making the water antibacterial, and which is capable of maintaining the silver releasing ability for a long period of time; and a water treatment method using the antibacterial processing agent. Specifically disclosed is an antibacterial processing agent for a water treatment, which is characterized by being composed of a resin composition that contains a resin having a standard water content of 1-10% by weight and 1-30% by weight of a silver-substituted zirconium phosphate that is represented by formula (1) as an antibacterial agent. AgaMbZrcHfd(PO4)3nH2O (1) In formula (1), M represents at least one kind of ion selected from the group consisting of an alkali metal ion, an alkaline earth metal ion, an ammonium ion, a hydrogen ion or an oxonium ion; a, b and c each independently represents a positive number; d represents 0 or a positive number; and n represents 0 or a positive number of 2 or less.

Description

technical field [0001] The present invention relates to an antibacterial treatment agent for water treatment and a production method thereof. The antibacterial treatment agent for water treatment is characterized by comprising a resin composition containing a resin with a specific standard moisture content and a specific silver-based inorganic antibacterial agent. It also relates to a water treatment method for performing antibacterial treatment of water by bringing the antibacterial treatment agent for water treatment of the present invention into contact with various types of water. Background technique [0002] As an antibacterial agent for water treatment, various antibacterial agents have been proposed depending on the application, target water, flow rate, and the like. For example, zeolite particles of any size or zeolite-based processed products capable of solid-liquid separation for water treatment have been proposed, in which silver ions are supported in a pH treatm...

AI Technical Summary

Problems solved by technology

When activated carbon is used, there is also the following problem: Since it is black and also adsorbs substances other than pollutants, its use is limited, and when the adsorption capacity of activated carbon is saturated, pollutants are released into water

[0017] According to the invention described in Patent Document 6, since polyolefin has low hydrophilicity, the microporosity obtained by water treatment is only near the pole surface of the molded article, so only silver near the surface can be used, even if it is obtained Sustainability in the initial stage, and long-term sustainability cannot be obtained

In addition, silver zeolite has large pores, and the ability to control ion exchange properties cannot be said to be precise. Therefore, it cannot be said that the concentration of eluted silver can be strictly controlled.

[0018] In this way, although antibacterial properties can be displayed in a short period of time, it is not easy to control long-term persistence and a certain silver concentration in water, and the technology of antibacterial agents suitable for water treatment is still unclear.

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