Material for introduction into drinking water, physiologically essential inorganic elements


 

(57) Abstract:

The material applied in the modification of organic resins in order to give them specific properties by incorporating inorganic poorly soluble compounds modified ion exchangers for the conditioning of drinking water and, in particular, with the introduction in the drinking water, physiologically essential macro - and micronutrients. The proposed material is composed of organic resin having a porous structure in the air-dry condition, and inorganic poorly soluble compounds with a ratio of Ionith : partially soluble inorganic compound, equal 35-90:10-65 wt.%. The use of the proposed material can be entered into the water not only the macro-and micronutrients, to stabilize the ions in the water with the simultaneous purification from organic and inorganic impurities. Specific productivity (the rate of transmission of water) when using such material may reach 5 min-1. table 2.

The invention relates to the field of modification of organic resins in order to give them specific properties by incorporating inorganic poorly soluble connect the drop in the drinking water, physiologically essential macro - and micronutrients.

Known material for conditioning drinking water, which is dolomitized breed, containing in its composition, wt.%: calcium 20, magnesium 11, iron 0,002, copper 0,01, cobalt 0,001, Nickel 0,002, zinc 0,01, chrome 0,002, vanadium 0,001. By passing water through the granules of 1-5 mm of this mineral is the introduction of its physiologically necessary for a person ions macroelements (calcium, magnesium) and trace elements (iron, copper, zinc). (RF patent N 2056358, MKI C 02 F 1/18, publ. 20.03.96).

The disadvantages of this material can be attributed to the impossibility of introducing other elements. The transmission rate of the water through the filling is low (1-2 l/hour) due to the fact that physiologically essential elements allocated exclusively from the surface of the inorganic material.

Known composition for fluoridation (conditioning) drinking water, including activated carbon and the material, which consists of a complex of cellulose ether (mainly cellulose acetate) and inorganic compounds containing fluorine ion (mainly of calcium fluoride - soluble compounds). Granulometric composition of the material is 0.3 - 1.5 mm, the ratio of the components in the materials of fluorine in the amount of 0.5 - 1.5 mg/l at a specific rate of passage of water through the material of 0.5 - 5 min-1.

The disadvantages of such a material can be assigned using it exclusively for administration in the drinking water of fluoride ions. Weakly expressed ion-exchange properties of the granules of the composite material does not allow its use for simultaneous active removal of such contaminants as heavy metal ions. In addition, it should be noted the complexity of the method of obtaining this material, which, in particular, is used in the manufacture of flammable liquids-acetone.

Analysis of the current level of technology shows that the closest technical solution to the present invention is a material for introducing a physiologically essential ions in desalinated water, which consists of granules of activated carbon, on the surface of pores which are soluble inorganic compounds containing in their structure allocated in the water ions of calcium and magnesium. Inorganic poorly soluble compounds precipitated in the pores of activated carbon by successive treatments of his solutions of soluble substances entering the exchange reaction with the deposition of one of the products of the reactions the USSR N 1608138, MCI C 02 F 1/68, publ. 23.11.90).

Known material allows you to maintain in the water, which is filtered through it, the concentration of calcium ions and magnesium physiologically appropriate level for 30 l missed water weight filling 100 g and a flow rate of 50 ml/min. Specific filtering rate is 0.5 min-1. Due to the porous structure of the material well-Sorb organic impurities, and are also capable of using physical adsorption to hold heavy metal ions. When using material no effect infusion during breaks in the work.

The main drawback of this material is to use it exclusively for the introduction of nutrients, such as magnesium, calcium, potassium. The disadvantages of this material can be attributed to the complexity of the method of its production, including non-productive consumption of deposited substances; the inability stronger chemical sorption of heavy metal ions, as well as the fact that the rate of filtration of water through such a material is low.

In this regard, there is a technical problem - the development of material for the introduction of desalinated water or drinking water, physiologically essential micro - and organic compounds from water increasing the rate of water filtration through simplified method of producing such material.

The solution of the problem is that the material for introduction into drinking water or desalinated water, physiologically essential additives contains organic ion exchanger having a porous structure in the air-dry condition, and soluble inorganic compounds in the pores and on the surface. The content of soluble inorganic compounds in the material is 10-65 wt.%.

In the material as an organic resin having a porous structure in the air-dry condition, use organic macroporous or macrostate strong and weak acid cation exchangers with polystyrene, polyacrylic and polymethacrylic matrix and organic macroporous or macrostate high and slightly basic anion exchange resin with polystyrene and polyacrylic matrix or other similar structure and properties, having a total pore volume of 0.1 - 1.0 cm3/g and a grain size of 0.3 - 1.5 mm

As inorganic poorly soluble compounds (IFAS) material contains inorganic salts, oxides, hydroxides, acids having a solubility lower than 8 g/l and having the CDs, including the physiologically essential elements are formed as a result of the exchange and redox reactions.

The method of obtaining material comprises sequential processing of organic ion exchanger inorganic ionic compounds. First, the ion exchanger is treated with an inorganic substance with a solubility of more than 8 g/l, such as CaCl2, MgSO4, NaF, Na2SeO3, ZnSO4, CuSO4, FeSO4, MnSO4, KMnO4, Cr2(SO4)3, Na2SnO3, HCl, NaOH, KOH, K2CO3, HClO, and one of the ions connection goes to the ion exchanger as counterion. Then the resin is treated with a second inorganic compound with a solubility of more than 8 g/l, one of the ions which react with the counterion of the resin and forms an inorganic compound with a solubility of less than 8 g/l (soluble compound in the pores and on the surface of the resin. As the second inorganic compounds can be used compounds described above. In some examples, to achieve uniformity and the required level of ions in the water, these operations are repeated 2 to 5 times, and the content of the IFA in the material is 10-65 wt.%.

Analysis saleemul is the shaft of technical solutions shows that doesn't include a combination of features, identical to the technical nature of the claimed. Comparative analysis of the proposed solutions with the prototype shows that the claimed solution differ from the prototype using new media for poorly soluble compounds with a specific value included in the material composition of the components.

Thus, the claimed material meets the criteria of the invention of "novelty". In literature and practice, there is no information about the material that is identical to proposed and it is not obvious from the prior art. This allows us to conclude that the claimed solution meets the criterion of "inventive step". The proposed solution provides the achievement of the technical result can be achieved for conditioning water, the enrichment of its physiologically necessary to human elements and enables repeated playback, which allows to make a conclusion about the satisfaction of the claimed invention, the criterion of "industrial applicability".

The invention is illustrated by examples.

Example 1

Anionite AV-17-10P (GOST 20301) is treated with a solution of Na2SO4to plowed with a ratio of solid : liquid (t : W) = 1 : 2. After contact for 3 hours, the solution is drained, the resin washed with distilled water. The operation is repeated 2 times. The material has low connection (MPC) CaSO4in the amount equal to 65 wt. %. The content of the IFA in the material is determined by the difference between the concentrations of calcium ions in the original solution and the equilibrium solution.

The material obtained at 10 cm3placed in a column with an inner diameter of 11 mm and passed through him mineralized water (total hardness (RC) of 0.5 mEq/l). At the outlet from the column determine the content in water of calcium ions after passing 1, 10, 20, 30 liters of water. By passing water specific performance is 3.0 min-1. After completion of 10 and 20 liters of water selected sample cover flow for 24 hours and after the break, again carry out the sampling. At the outlet from the column determine the content of calcium ions (GOST 1451). Material components, the main parameters of the method of its production are presented in table 1. The results of the analyses and physiological norms of ions in water (LB) are presented in table 2.

Example 2

The cation exchanger KU-23 (GOST 20298) is treated with a solution of CaCl2until recently is the rate of t : W = 1 : 3. After contacting within 2 hours the solution is poured, the cation exchanger is washed with distilled water. The material contains IFAS CaF2the number mos.%. The content of the IFA in the material is determined by the difference between the concentration of fluoride ions in the initial and equilibrium solutions (GOST 4386). Next, similarly to example 1, except that the material charge in the amount of 3 cm3and passed through the column mineralized water with coolant - 3 mEq/l, and the filtrate determine the content of fluoride ions.

Example 3

The cation-106 (PUROLITE) is treated with a solution of CuSO4prior to his transfer to 60-90% in the copper form. Then the cation exchange resin is treated with 10% NaOH solution under dynamic conditions in the column at a flow rate of 3 volume reagent volume of the cation exchanger. After contacting the cation exchange resin is rinsed with distilled water. The operation was repeated 3 times. The material contains IFAS Cu(OH)2in the amount of 58 wt.%. To establish content material IFAS is dissolved and determine the content of copper ions (II) (GOST 4388). Next, similarly to example 1, except that passed through the column mineralized water with coolant - 3 mEq/l, and the filtrate determine the content of copper ions.

Example 4

The anion A-835 (PUROLITE) about th solution of AgNO3in static conditions with a ratio of t : W is 1 : 10. After contacting within 6 hours the solution is poured, the material is rinsed with distilled water. It contains MPC Ag2SeO3in the amount of 10 wt.%. To establish content material IFAS is dissolved and determine the content of silver (GOST 18293) and Selenite-ion spectrophotometric method with the reagent 3,3"-diaminobenzidine. Next, similarly to example 1, except that the filtrate determine the content of the Selenite ion.

Example 5.

Similar to example 1, except that the anion exchange resin is first transferred to the hydroxyl form, and then treated with 3% solution of MgSO4. The material contains IFAS Mg(OH)2in the amount of 43 wt.%. To establish content material IFAS is dissolved and determined in solution, the content of magnesium ions (GOST 4151). Next, similarly to example 1, except that the filtrate determine the content of magnesium ions.

Example 6

The cation-150 (PUROLITE) is treated with a solution of ZnSO4prior to his transfer to 80-100% zinc in the form. Then the cation exchange resin is treated with a 5% solution of Na2CO3under dynamic conditions in the column at a flow rate of solution 3 Abrial contains IFAS ZnCO3in the amount of 61 wt.%. To establish content material IFAS is dissolved and determined in solution, the content of zinc ions (GOST 18293). Next, similarly to example 1, except that the column is placed 5 cm3material and leachate determine the content of zinc ions.

Example 7

An anion exchange resin -511 (TU 6-05-211-1311-85) is treated with NaOH solution until the full translation in the hydroxyl form. Then the anion exchange resin is treated with a 5% solution of KMnO4in static conditions with a ratio of t : W of 1 : 2. After contact for 0.5 hours, the solution is drained, the material is washed with distilled water. The material contains MPC Mn(OH)2and MnO2in the amount of 25 wt. % in terms of manganese. To establish content material IFAS material is burned and the remainder to define the content of manganese (GOST 4974). Next, similarly to example 1, except that the filtrate determine the manganese content.

Example 8

Similar to example 1, except that as the carrier of the MPC using the cation exchanger KU-23 (GOST 20298), translated in the calcium form and treated with 1% solution of Na2SO4when the ratio of t : W 1 : 20. The total number of treatments with the 20298) is treated with a solution of CaCl2prior to his transfer to 80-100% in the calcium form. Then the cation exchange resin is treated with 30% solution of MgSO4in static conditions with a ratio of t : W = 1 : 1. After contacting within 2 hours the solution is poured, the cation exchanger is washed with distilled water. After that, the cation exchange resin is treated with a 5% solution of Na2CO3in static conditions with a ratio of t : W =1 : 3. After contacting within hours, the solution is drained, the cation exchanger is washed with distilled water. The content of the IFA CaSO4and MgCO3the material is 45 wt.%. The content of the IFA in the material is determined by the difference between the concentrations of calcium ions and magnesium in the initial and equilibrium solutions. Next, similarly to example 1, except that passed through the column of desalinated water with coolant - 0.05 mg-EQ/l, and the filtrate determine the content of calcium ions and magnesium.

Example 10 ( foreign)

Similar to example 1, except that as the carrier of the MPC using the cation exchanger KU-23 (GOST 20298), translated in the calcium form and treated with 5% solution of Na2SO3when the ratio of t : W of 1 : 2. The total number of treatments is 6. The material contains IFAS CaSO4in the amount of 72 wt.%.

standing in the quantity of 35-90 wt.% provides uniform allocation physiologically necessary ions in water at specific productivity greater than 0.5 min-1that is impossible when using the technical solutions of the prototype.

Content material poorly soluble inorganic compounds in the number of 10-65 wt.%. due to the fact that fewer IFAS on the ion exchanger in the water is not getting an adequate amount of physiologically necessary ions. With the increasing content of IFAS in the ion exchanger more than 65 wt.% dramatically increases the number of required treatments, which complicates the process of obtaining material and the stability of its work.

As seen from the examples and tables, the use of the material in which the carrier is taken organic ion exchangers with a certain structure and a certain ratio with poorly soluble inorganic compounds, allows you to enter in the water, not only the macro-and micronutrients, as well as to increase the rate of water filtration, which was virtually impossible when using the known technical solutions. Specific productivity (the rate of transmission of water) can be increased by using such material in 6 times.

The examples do not limit the amount and type of organic resins and low-solubility compounds.

Matera is osiel, containing in the pores of the inorganic poorly soluble compounds, characterized in that as the carrier poorly soluble inorganic compounds using organic ion exchangers having a porous structure in the air-dry condition, when the ratio of the resin and soluble inorganic compounds 35 to 90 : 10 to 65 wt.%.

 

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