RU1370856C - Method of producing hyper-filtering polymeric diapharagms - Google Patents

Description

(46) 06/15/93. Bull. K 22

(21) 3827170/03

(22) 12.20.84

(71) Research Institute; here plastics them. G.S. Petrova with the Experimental Moscow Plastic Plant

(72) L.P. Bogdanov, K.M.Saldadze, G.L. Gorokhova and R.S. Gotsiridee

(56) U.S. Patent R 4 24 7401, CL 210-638, published. 1981.

Patent SSShLK 3373056, class 427-24A, published. 1968.

(54) METHOD FOR PRODUCING HYPERFILTRATION POLYMERIC MEMBRANES (57) The invention relates to the production of hyperfiltration polymer membranes used for separation, purification and concentration of substances. The invention allows to increase the selectivity for sodium chloride while maintaining high permeability of the membranes and to reduce the exposure time due to the fact that the polymer membrane is treated with tea extract in distilled water, obtained from 2-8 g of dry tea leaf and 92-98 g of water at 50- 70 ° C for 2-5 minutes 2 tab.

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11370856

And: 1 (1 bretrina wants to get 3200 g / m.sut salzh.chnig- NnC n hyperfiltration of these highly selective filtrate "30 r.m.

polymeric mmbrases used for Example 32. Membrane, recipes of trio11i, purification and separated according to examples 10-18 are treated with solutions of various substances. as in proto-type, i.e. through the membrane

The aim of the invention is to increase - pass 3, NaCl solution, selectivity hyperfiltration-containing 100 r.m. of polyvinylmethy polymer memOran over tin ether chloride, after washing with fresh sodium while maintaining high permeability with distilled water, the membrane capacities and the time reduction of a 3.5% NaCl solution are passed. The permeability of the inside of the prototype membrane.

The method is carried out as follows 1020, the content of NaCl in the filter method.

In all examples, the control was prepared as Example 33. Thin-film flax membranes were carried out on a 3.5% composite polymer membrane on a sodium chloride solution with a pressure of 10.5 MPa from polyoxyadiaol and a solution temperature of 3500 l / m. day and a concentration of 25 ° C and the flow rate of the separated KaCl in the filtrate 600 r.r.m. omitted a solution of 0.3 m / s. .20 2% soluble sconce solution Examples 1-9. Thin-film Zilsky coffee in a distilled non-composite membrane on a de substrate. with a temperature of 50 ° C and kept from polyoxadiazole with an permeability of 5 minutes Then, the membranes were washed with a dis- 3500 l / m-day and with a concentration of NaCl in tilled water and tested. Half-filtrate 600 r.r.m. or they lower the 26th permeability of 3300 l / m -, a day and a solution of tea extract on a low concentration of NaCl in the filtrate 590 r.m. time and experience (examples 1-5), Example 3A for comparison (either a vegetotype is passed through the membrane either). A solution of cellulose acetate, an extract of tea extract, is washed with distilled water. 100 g cellulose acetate, 300 g lirovannoy water And then they are tested with acetone, 45 g hearth, 4.5 g bromide (examples 6-9) .. zinc,, 5 g magnesium perchlorate, 4.5 g

Examples 10-18. Thin-film MgBr ,, x, is applied to the glass composite membrane on a 0.25 mm thick Tolgcine substrate at -11 ° C, a polysulfone spoon is permeated for 3 minutes and immersed in a bridge of 1100 l / m day and a concentration of water with a temperature of 0 ° C; then it was subjected to NaCl in the filtrate 175 r.r.m. or annealing for 5 min at 89 s is omitted. they are salted in a solution of tea extract for membrane permeability of 390 l / m day, and they are tested for some time (examples, the concentration of NaCl in the filtrate is 10-14), or 300 r.m.

tea extract solution, Promi-Q This membrane is treated with 3.5% distilled water and then a NaCl solution containing 100 rm is tested (examples 15-U). polyvinyl methyl zetra. .Permeability The table shows the properties of the membrane according to the 3.5% NaCl solution of wounds obtained according to the proposed method, the concentration of NaCl in the filter is wasted. 150 r.m.

Claims (1)

The claims Examples 19-30. The membrane is semi- The method of obtaining hyperfiltration, as in examples 1-18, treated with polymer membranes by processing, is labeled under the conditions, the output is always behind the Erarana by the modifier scavenger, and the limits are limited (see table). 50 hours and with the fact that with the aim of Example 31. The membrane, half increase in chlorine selectivity according to examples 1-9, is processed, which is torn while maintaining high as in the prototype, i.e. through the membrane permeability membranes and scrap (they pass a 3.5% NaCl solution, after exposure, as a modifying agent containing 100 r.p.m. of polysine 1lnets-55-cptor, tea extract is used in th-jtbiipa, and after rinsing with fresh / 11-still-free RODS obtained with distilled water is passed from 2-8 g of dry tub and 3.5% -iii, ui NaCl, permeability of 92-90 g of water, and treatment with a membrane at the same time, according to the prototype ZO-xO C 2-5 -iuii.