RU1816227C - Filter packing material for drinking water treatment - Google Patents

Abstract

Usage: purification of drinking water from heavy metals, radionuclides and impurities of organic compounds. The inventive filter load consists of four layers of components located in the following sequence along the purified water: birch activated carbon, microporous silica gel, phosphorus-containing synthetic zeolite with a molar ratio: P: A1 (0.5-1.0): 1 and birch activated carbon in silver form, the components being contained in the following ratios (vol%): BAU 25-30 coal, microporous silica gel 20-24, phosphorus-containing synthetic zeolite 28-34, BAU coal - the rest. 1 tab.

Description

The invention relates to processes for purifying drinking water and the proposed material can be used as a load of a household filter.

The aim of the invention is to increase the degree of purification of water.

The goal is achieved by filtering materials for water purification, including four layers of sorbent materials containing birch activated carbon in silver form and silicon dioxide, which additionally contains phosphorus-containing synthetic zeolite with a molar ratio of P: A1 0.5-1: 1, as dioxide silicon it contains microporous silica gel and the components are placed in the following sequence of layers along the flow of water in an amount, vol. %:

Activated birch

charcoal in silver form

Microporous silica gel 20-24 Phosphorus-containing synthetic zeolite28-34 Birch activated carbon in silver nitrogen-containing compounds, organic compounds and bactericidal purification is provided. In this case, by using a combination of a phosphorus-containing synthetic zeolite and microporous silica gel, the macro composition of drinking water is maintained without change, i.e. without foreign ions and compounds entering it. Subsequent 00

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hO hO XI

i p1. In a polyethylene case: a shape of 1.9 dm per

The layers, namely, the passage of water initially through a layer of silica gel and then through a layer of zeolite, ensures the highest selectivity of these materials to heavy metal ions. The claimed volumetric ratios of sorbents provide the possibility of obtaining drinking water that meets the requirements of GOST 2874-82 Drinking water.

The filter material is obtained as follows.

For example, cylindrical

400 cm3 of BAU coal is loaded in silver form, 400 cm of microporous silica gel are poured on top, then 600 cm of a phosphorus-containing zeolite having a P: A1 ratio of 0.7: 1 and the last 500 cm of BAU coal in silver form. The cylinder with the sorbent is closed with a mesh pad preventing the sorbents from spilling out and a lid. The filter is ready to go.

Tap water is passed through the resulting filter material for 20 hours at a rate of 25 l / h. Tap water and purified by passing through a filter were analyzed for the content of various components. The test results are presented in Table C. The data on the indicators of drinking water purified under similar conditions using filter material with boundary declared contents of the components are also given.

Thus, it can be seen from the above data that the claimed filter material provides comprehensive cleaning

5

5

0

fifty

drinking water from various impurities, in particular:

cesium radionuclides by 70 + 10%, strontium -90 NaZO ± 10%,

heavy metal ions in 60-90% of organic impurities in 50-70%. The filter material is convenient and easy to operate, but requires special additional training. The components of the filter material are low cost and are produced by domestic industry.

Claims (1)

Please assign a name to this filter media. SUMMARY OF THE INVENTION Filter material for drinking water purification containing four layers of sorbent materials, including silver birch activated carbon and silicon dioxide, characterized in that, in order to increase the degree of purification, it additionally contains a phosphorus-containing synthetic zeolite with a molar ratio P: A, equal to (0.5-1): 1, as silicon dioxide it contains microporous silica gel and the components are placed in the following sequence of layers along the course of water flow in an amount, vol.%: Birch vy activated carbon in the silver forme25-30 microporous silica Kagel 20-24 28-34 The phosphorus-containing synthetic zeolite Birch activated carbon in the form of a silver rest.