Filter material for water treatment

 

(57) Abstract:

The invention relates to the field of water treatment, namely, water purification from microorganisms through the filter material and can be used for concentration of sorbed components. The invention consists in the use as a filter material zeolite tuff Underskog field. The invention allows for water purification from microorganisms at various fractions of zeolite and the heights of the filtering layer, at different pH values and the speed of filtration. 10 table.

The invention relates to the field of water treatment, namely, the purification of water by using a filter material.

In addition, the invention can be used for concentration of water sorbed components.

Known use as a filter material for water treatment different from its components, in particular, from microorganisms quartz sand, which is pre-washed and sorted by sieving through a sieve (Guzikow Century A. Filtering. - M.: Chemistry, 1968. - 412 S.; Yakovlev, S. C. and other sewage. - M.: Stroiizdat, 1976. 632 S.; Zhukov, A. I. and other cleaning Methods proizvod and has comparatively high cost, what necessitated the search for more cheap and available materials.

The objective of the invention is to clean water from micro-organisms, which can be solved by passing water through the filter material, which is a zeolite tuff Underskog field.

Anadyrskiy field (Pasture) located on the territory of Magadan region.

CT this field refers to clinoptilolite-galandauer tuffs. The rock is light gray in color, odorless. Crushed CT is a baby with the wrong form of granules.

Mass fraction of zeolite at a fraction of 1.0 - 2.5 mm - 60%, at a fraction of 0.25 mm to 56%.

The mineral composition of rocks according to x-ray phase analysis - clinoptilolite, quartz, montmorillonite, mica (amorphous phase).

Mineral admixtures - feldspar (microcline+plagioclase, biotite, chlorite), ore metals.

The chemical composition of CT Underskog deposits are presented in table. 1.

Microcomponent composition in %:

Mn - 0,020; Ni - 0,0004; Co - 0,0003; Ti - 0,20; V - 0,004; W - 0,004; Nb - 0,008; Zn - 0,010; Cu - 0,001; Pb - 0,002; Bi - 0,002; As - 0,01; Hg - 0,0000032.

Th - 0,80,1/10-9CI/kg

U-1,5 0,2/10-9CI/kg

Ude is rbse micropores - 4,08 mmol/g; a micropore + macropores - of 6.78 mmol/g Grindability - - 0,98%, abrasion - 0,19%, exchange capacity - E NH+4- 132,97 mEq/100 g

As test organisms in this work used the representatives of intestinal microorganisms (m/o) with water most of the sanitary-indicative value. Reasons epidemic security selection was stopped on non-pathogenic E. coli M-17 (E. coli M-17 and Enterococcus (Str. faecalis - fecal Streptococcus).

For experiments used tap water, pre-warmed in a water bath at 100oC for 30 min to eliminate the effect on the results of the study's own microflora.

For the experiments took daily broth culture of E. coli M-17 in a dilution of 1:16500, which were made in water at the rate of 0.2 ml culture in 3000 ml of water. The concentration of microbial cells in 1 ml culture corresponded 5108. The culture of Enterococcus contributed a rate 0.6 ml at the dilution 10-33000 ml of water. The thus prepared water was filtered through a glass column filled with washed with distilled water (until the termination of Muti) and erased the filtered water was seeded with a spatula on a Cup of Endo in three to five replications in the study with Escherichia coli and on Wednesday Viburnum studies with Enterococcus. Seeded cups were incubated at temperature 37oC for 20 to 24 h, after which calculated the percentage of detainees m/O.

To assess the source of contamination of water in the same way in 3 replications were seeded water before filtration. The experimental results were processed statistically.

Example 1. Information confirming the presence of CT Underskog field sorption activity against microorganisms.

In table. 2 presents the results of determining the sorption activity CT "Anadyrskiy" against Escherichia coli and Enterococcus. Here the data on sorption activity of quartz sand.

The data table. 2 confirm that CT Underskog field has a sorption activity against Escherichia coli and Enterococcus: he absorbs 95.3% of Escherichia coli and 79.9% of Enterococcus.

Differences in the efficiency of sorption of Enterococcus zeolite and quartz sand statistically unreliable.

Experimental conditions: the diameter of the grains of zeolite to 0.63 - 1.25 mm, the diameter of the sand grains of 0.3 - 1 mm, the filtration rate of 0.6 m/h, the height of the layer of sorbent - 50 cm

It is known that the ability of the filtration load restraining microo, the t height of the filtering layer.

Following the results of the experiments confirm the possibility of carrying out the invention at various indicators of the above factors.

Example 2. Information confirming the sorption activity of different fractions CT "Anadyrskiy" against Escherichia coli.

Research on the efficiency of sorption of E. coli DH with different particle sizes (table. 3) shows high values of efficiency of sorption: 96,3% for fraction 0,315 - 0,63 mm and 94,3% for fraction 0,63 - 1,25 mm

Conditions of experience: the height of the filtering layer 50 cm, pH 5.0, the filtering rate of 0.6 m/h

Example 3. Information confirming the sorption activity of fractions CT "Anadyrskiy" against Escherichia coli at different speeds filtering.

In the study of percolation rate of water through the zeolite was found that at small fractions of zeolite with a particle size of 0.315 - 0,63 has a high sorption efficiency of microbial cells at speeds of 0.2 and 0.6 m/h: 98,00,93 and 96,31,26%, respectively. Higher speed filtering - 4.0 and 8.0 m/h can be achieved using larger particles of the second fraction (see table. 4).

This faction efficiency filtration 8.0 m/h efficiency of sorption or 65.3%.

The conditions of the experiment the pH to 5.0, the height of the filtering layer 50 see

Example 4. Sorption activity CT "Anadyrskiy" at different pH values.

As already mentioned, on the sorption of microorganisms can influence the concentration of hydrogen ions, i.e., the pH of the filtered water.

As studies have shown, the efficiency of sorption on faction to 0.63 - 1.25 mm within the studied pH values from 4 to 10 ranges from 61,3 up to 94.3% for pH 10 and 5, respectively (see tab. 5).

Conditions of experience: speed of 0.6 m/h, the height of the filtering layer 50 see

On faction 0,315 - 0,63 mm CT "Anadyrskiy" shows an even higher efficiency of adsorption of microbial cells: from 82.7 per cent (pH 10) 88.7% (pH 4) to 91.3% of (pH 7) and 96,3% (pH 5).

Example 5. Sorption of microorganisms filters of different thickness.

The results show that the efficiency of sorption of microorganisms increases with the height of the filter layer and at most of the investigated layer height is to 94.3% for the faction to 0.63 - 1.25 mm and 96,3% fraction 0,315 - 0,63 mm (PL. 6).

Conditions of experience: speed of 0.6 m/h, pH - 5,0.

Therefore, on the basis of obtained data we can conclude that CT "Anadyrskiy" oilgate, that and other representatives, including human pathogens, microorganisms. For more convincing evidence of this provision was carried out a series of experiments with another representative of the sanitary-indicative microorganisms and fecal Streptococcus (Enterococcus), with rod-shaped, and cocciopesto form and other biological properties.

Example 6. Information confirming the sorption activity of different fractions CT "Anadyrskiy" against Enterococcus.

Conditions of experience: pH - 5,0; height absorptive layer is 50 cm, the filtration rate of 0.6 m/h

Analysis of the obtained results, presented in table. 7 shows that the smaller fraction efficiency of sorption of Enterococcus above and is 89.0%.

Example 7. Sorption activity of different fractions CT "Anadyrskiy" at different speeds filtering.

According to the data table. 8, at low speeds filtration (0.2 - 0.6 m/h) through a small fraction of differences in the recovery of Enterococcus irrelevant; high filtration efficiency: 88,3 - 89,0%. On large fraction of zeolite a difference in the results increases and becomes reliable, though not quite understandable: at the speed of 4 m/h effekte 8. Sorption of Enterococcus at different pH values

The study of the influence of pH on the activity delay of Enterococcus (table. 9) shows in General the same General patterns that have been established for E. coli. So, from the table it follows that and Escherichia coli, and Enterococcus most effectively are sorbed at pH 5.0: the efficiency of sorption of Enterococcus is 89.0% and 70.8% for fractions N 1 and N 2, respectively, the efficiency of sorption of E. coli is 96,3% and 94.3% of the specified fractions, respectively.

Conditions of experience: the height of the filter 50 cm, a speed of 0.6 m/h

Example 9. Sorption of enterococci in CT "Anadyrskiy" at different heights of the filtering layer

Analysis of the impact of the height of the filtering layer of zeolite on the sorption of enterococci reveals the same patterns as for the sorption of E. coli, i.e., the efficiency of water purification from enterococci also increases with increasing height of the filter layer (PL. 10).

Conditions of experience: pH 5.0 speed of 0.6 m/h

Thus, the experimental study of sorption properties of zeolite "Anadyrskiy" shows his ability to actively clean filtered water from microorganisms. The greatest efficiency of sorption Trouser layer, that and the greatest efficiency of sorption of E. coli. The possibility of carrying out the invention is shown for different values of the above parameters.

The use of natural zeolite tuff "Anadyrskiy" as a filter material for water purification from microorganisms.

 

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