SU1260013A1 - Filtering material - Google Patents

Abstract

This invention relates to the field of filtration by slurry and permits an increase in the filtration capacity of the material. A layer of filter material containing 15–65 wt.% Polyvinyl chloride, 5–45 wt.% Cellulose and 20–60 wt.% Kieselguhr is applied to the filter septum. Through the resulting layer filter about; t brine containing an admixture of calcium carbonate

Description

The invention relates to a filtering material and can be used to separate low concentrated suspensions in the refining, chemical and other industrial sectors.

 the invention is an increase in the filtration capacity of the material.

Example 1. The same amount of auxiliary filtering substance, which is a composition of cellulose, diatomaceous earth, and polyvinyl chloride, is applied to the filter septum in all experiments at different ratios of the components. In the experiments, crystalline cellulose, diatomaceous earth, obtained as a result of the grinding of natural trefoil, its subsequent treatment with flux, roasting and

EXAMPLE 2. The same amount of auxiliary substance is applied to the filter septum, which consists of a composition of cellulose, kieselguhr and polyvinyl chloride at different proportions of the components. In the experiments using the same excipients as in example 1 ..

ten

15

20

and suspension powdered polyvinyl chloride.

The amount of auxiliary substance that is applied in all experiments is the same and amounts to 2 kg or 1 m of the filter surface. The brine containing calcium carbonate impurity is filtered through a layer at a constant filtration rate in all experiments and the impurities in the initial brine are 25 mg / liter (for calcium).

The analysis of calcium ion content is performed by the trilonometric method, which is based on direct titration of the brine with a solution of Trilon B.

After filtering strictly identical amounts of filtrate in all experiments, brine samples are taken for analysis.

The obtained data are presented in table 1.

Table 1

and The amount of filter media applied is 2.5 kg per 1 m of filter surface. Water that is contaminated with 555% of iron hydroxide in an amount of 0.06% by mass is filtered through a washed layer at constant pressure.

After obtaining strictly identical amounts of filtrate, samples are taken.

last for analysis and record the average speed of the process. The results of filtration rates are compared in those experiments in which the iron content in the filtrate was approximately the same. In these experiments, the content of iron hydroxide in the layer of the editor N.Slobodnik

Compiled by N.Stroganova Tehred L.Oleinik

Order 5156/3 Circulation 663 Subscription

VNIIPI USSR State Committee for Inventions and Discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, Projecto st., 4

The nutrient was also the same, since the content of solid medium in the initial suspension was unchanged.

The obtained data are presented in table 2.

Table 2

Proofreader I.Muskg.

Claims (1)

Claim Filtering material containing polyvinyl chloride and cellulose, characterized in that, in order to increase the filtering capacity of 35, it additionally contains kieselguhr in the following ratio of components, wt.%: Polyvinyl Chloride Cellulose Kieselguhr 15-65 5-45 20-60