Method of obtaining means for water purification, means and method of water purification

FIELD: chemistry.

SUBSTANCE: invention relates to field of water purification. Method includes interaction of metal aluminium with hydrochloric acid solution, further introduction of additive into mixture and mixture exposure of with obtaining polymerisation product. Activated carbon with particle size 100-10000 nm is introduced into mixture as additive in amount 9-12 kg/ton. Polymerisation product contains polyaluminiumhydrochloride with polymerisation degree about 70% and index of basicity 5/6. Method of water purification with obtained means is realised in apparatus, which contains mixer, flocculator and flotator.

EFFECT: claimed is method of obtaining means for water purification based on chloroaluminium-containing coagulant.

3 cl, 1 dwg

 

The invention relates to the field of water purification and can be used to improve the efficiency of water purification from organic substances of natural and anthropogenic origin.

Known coagulant the oxy-chloride of aluminum Aqua-Aurat manufactured by JSC "Aurat" (TU 2163-069-00205067-2007) used for purification and conditioning of drinking water, wastewater treatment in industry, agriculture, domestic purposes, for water treatment, power plant, power plant, boiler houses, in the paper industry for sizing paper, in perfumery, etc.

The closest analogue of the claimed invention is a means for water purification, as disclosed in the application for invention of the Russian Federation No. 2004104005 and represents the adsorption-coagulating the mixture, containing sorbents of the number of carbon (activated carbon, graphite, etc.) or aluminosilicate (e.g. bentonite), salts of alkaline metals (potassium, sodium, etc.) and a coagulant (ferric chloride (III), aluminum chloride, etc.).

The disadvantage of the closest analogue is the lack of efficiency of water treatment and the need for coagulant and adsorbent separately and their subsequent mixing, which complicates the technology.

The objective of the claimed invention is to provide a means for water treatment, which has a higher efficiency, but also simplifies�ood water purification technology, including the preparation of tools for cleaning.

The task is solved by the means for water purification, comprising a coagulant and adsorbent, characterized in that the coagulant is a polymer and particles of sorbent dispersed in the coagulant.

The technical result of the claimed invention is to improve the efficiency of water purification and simplification of the technology of water purification by eliminating the stage of mixing of the coagulant and the sorbent particles prior to contact with water. The tool represents a stable dispersion, thereby reducing the cost of maintaining the necessary contact of coagulant with water to be treated.

As coagulants in the invention may be used any polymer coagulant, for example inorganic polymer coagulants on the basis of the chlorides of iron and aluminum.

In a preferred embodiment is used polyaluminosilicate having the General formula Aln(OH)mCl3n-mwhere n and m are integers, wherein 0<m<3n.

The particle size of the sorbent is up to 10000 nm, preferably 100-10000 nm. In the most preferred embodiment, the particle size of the sorbent is 10-500 nm.

In a preferred embodiment, the basicity of the polymer is 5/6.

The degree of medium molecular polymerization is about 70%, preferably 70%.

Such a reagent in the water allows about�Asociate straight and branched chain, provides effective purification of water.

The tool can be obtained by adding particles of a sorbent polymer coagulant.

In a preferred embodiment, the particles of the sorbent is added in the polymerization process of coagulant.

Introduction of activated carbon with a particle size of up to 10,000 nm allows through electrostatic interaction to achieve the effect of stable dispersion, maintained at all stages of water treatment: dissolution of the reagent, mixing with the treated water, flocculation and flotation. This provides a significant synergistic effect in comparison with the use of the individual components.

The weight ratio of the sorbent to the polymer coagulant is from 1:20 to 1:40, preferably about 1:33.

The drawing shows the scheme of obtaining the claimed means for water treatment.

The cleaner water can be made of the following components:

- primary metal aluminum brand A7 in the amount of 90-110 kg/t;

- hydrochloric acid of food quality in the amount of 160-200 kg/t;

- activated carbon fractions 100-10000 nm in the amount of 9-12 kg/t;

- the rest of the water.

The composition constituting the claimed means for water purification, was obtained as follows. In the reactor 1 download primary aluminum and hydrochloric acid. The resulting mixture p�and a pump 2 is pumped through the heat exchanger 3 to the mixer 4, preferably, an ultrasonic mixer, where it is injected activated carbon fraction up to 10000 nm, and can be used ultrasound frequencies of 10-100 kHz. The resulting mixture was then fed back into the reactor.

The process of obtaining funds for the treatment of water is carried out for 24-36 hours at a temperature of 90-98°C. the degree of medium molecular polymerization is about 70%, preferably 70%, the basicity of the polymer is 5/6.

In the polymerization process, i.e., obtaining polyaluminosilicate, it is injected activated carbon fraction of 100-10000 nm. This can be used ultrasound frequencies of 10-100 kHz.

In the final product a weight ratio of activated carbon to the polymer is about 1:33.

Water purification is carried out in the apparatus, comprising a mixer, flocculation, flotation machine with following technical specifications:

- Dose agent for cleaning water - 1-20 mg/cubic DM water;

- The value of Camp (camp):

in the mixer: 30000-40000;

in the flocculators: 50000-100000.

- Specific hydraulic load in the flotation machine: 10-40 cubic meters/sq. meter/hour

The resulting product representing the claimed means for water purification, can be used in particular for the treatment of drinking and boiler water from organic substances of natural origin, and wastewater and con�of ensata from petroleum products.

1. The method of obtaining funds for water purification on the basis of chloroaluminium coagulant, including the interaction of metallic aluminum with hydrochloric acid, the subsequent introduction of additives in the mixture and the extract mixture to give product of polymerization, characterized in that as an additive mixture is introduced into the activated carbon with a particle size of 100-10000 nm in the amount of 9 to 12 kg/t, polymerization was carried out before the formation in a mixture of polyaluminosilicate with the degree of polymerization of about 70% and a basicity indicator 5/6.

2. A means for water obtained by the method according to claim 1.

3. The method of water treatment comprising the introduction of a means according to claim 2 in the apparatus containing the mixer, flocculation and flotation unit, where the amount is 1-20 mg/cubic DM water, the criterion of camp in the mixer is 30000-40000, the criterion of camp in the flocculators is 50000-100000 and specific hydraulic load in the flotator is 10-40 cubic m/sq. m/hour.



 

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