UA58979C2 - A method for purification of waste waters from ions of copper - Google Patents

Abstract

The invention concerns with ecology, and particularly methods for the purification of waste waters from ions of copper, and can be used at the enterprises of chemical, food, microbiological and other fields of industry. Waste waters are purified from ions of copper by the treatment with yeast of Saccharomyces cerevisiae in the high-gradient magnetic field with an intensity of 40-560 kA/m at pH of 2-4. Use of this invention allows to provide a high degree of purifying waste waters from ions of copper.

Description

Description of the invention

The invention relates to means of cleaning wastewater from heavy metals and can be used at 2 chemical, food, microbiological, and other enterprises. industries.

A method of removing heavy metal ions from wastewater is known (Av. St. USSR Mo 1730048 JSC, class Z 01 R 1/62;

Publ. 04/30/92. Bul. Mo 16) by sorption on an iron-containing sorbent - clinker of zinc production.

The disadvantage of the method is that the use of zinc production clinker leads to the contamination of the water to be purified with accompanying chemical reagents. 70 There is a known method of cleaning wastewater from metals (Av. sv. USSR Mo 1379252 A1, kl. Z 01 E 3/28; Publ. 07.03.88. Byul. Mo 9) which includes sorption with a porous material containing microorganisms.

The disadvantage of the method is that with this method, sorption occurs on filter paper, which increases the cost of the process and also increases the cleaning time.

The basis of the invention is the task of creating a method of purifying wastewater from copper ions, which allows 72 to provide the possibility of increasing the degree of purification of highly concentrated wastewater.

The task is achieved due to the fact that the purification of wastewater from copper ions includes treatment with a sorbent. According to the invention, the yeast Zasspagotusez segemividae is used as a sorbent in a high-gradient magnetic field for 5-60 minutes. at pH values of 2-4 with a voltage of 40-560 kA/m.

The causal relationship between the proposed features and the expected technical result will be as follows.

For wastewater treatment from heavy metals, it is promising to use magnetic fields, which make it possible to significantly intensify the cleaning process, reduce the duration of the technological cycle, and abandon the construction of large-scale structures.

It has long been known about the ability of a number of microorganisms to sorb or accumulate heavy metal ions. their c 29 cell membrane, which consists of polysaccharides, proteins and lipids, carries a set of functional Ge) groups capable of binding metal ions. After a certain time of the presence of microorganisms in the solution, sorption or accumulation of metal ions by microorganisms occurs. Currently, the removal of heavy metal ions by microorganisms is an alternative to more expensive and less effective physicochemical technologies. Under the action of a high-gradient magnetic field, the process of accumulation of metal ions by microorganisms is accelerated. This happens due to the fact that under the action of the magnetic field generated by the magnetic system, fluid flows with microorganisms occur around metal elements of different shapes, the distribution of velocities of which is the same along the entire length of each metal element. The parameters of liquid flows depend on the size of the surface area of the metal elements, the size of the magnetic field and the pH of the medium, as well as the chemical reaction between the surface of the metal element and the medium. 3o Due to the fact that the degree of purification depends on the parameters of liquid flows with microorganisms, which in turn depend on the magnitude of the external magnetic field and the pH of the medium, the dependence of yeast movement in the liquid flow on the pH of the aqueous solution was investigated. The research was carried out in an aqueous solution of SizO y with Zasspagotusevz segemizviae yeast in the range of pH - 1-5, magnetic field strength 160 kA/m. The obtained data "are given in table 1. - with хз" mon 2 17 ronin, but in this case the active chemical

Ф 107 jealous between the aqueous solution and the metal element, which leads to the destruction of the surface of the element and the yeast cell, ik -.5 s

It can be seen from the table that the pH of the aqueous solution of SyZO with Zasspagotusez Segemizide yeast equal to 1 is not recommended, because the surface of the metal element and the yeast cell are destroyed, at pH 59 5 the movement of the yeast is very slow. The optimal pH of the solution is 2-4.

GF) We studied the speed of yeast in a high-gradient magnetic field depending on the intensity of the external magnetic field in the range of 40 - bOOkA/m during the first 5 min. The speed of movement of Zasspagotusevs segemisiae yeast with optimal pH 2 in Syzo solution was used to study the speed of di.

The obtained data are shown in table 2. 60 now bo 2 40 7 in vv , y y y y y

It can be seen from the table that by changing the intensity of the high-gradient magnetic field, it is possible to ensure the required speed of the flow of liquid with yeast, but at a field intensity of 20kA/m, the speed is very low, and it is not advisable to use an intensity of 00kA/m, since to ensure a magnetic field intensity of more than 560kA /m additional material costs are required (electromagnet cooling system and higher costs of 70 electricity). At an external magnetic field strength of Н « 560 kA/m, it is possible to use inexpensive permanent magnets, which does not require electricity consumption at all. The optimal strength of the magnetic field is 40-56 OKA/m.

The method is carried out as follows.

The yeast Zasspagotusevs sehemizide was introduced into the copper sulfate solution in the amount of 1 g ASR/l. A cuvette with a nozzle consisting of metal needles was filled with solution /5. The cuvette was kept in the magnetic field from 5 to 60 minutes. Determination of the number of copper ions after sorption was carried out on a MI-1201AT mass spectrometer.

Example 1.

The yeast Zasspagotusev segemiviae in the amount of 1 g of ASR/l of solution was introduced into the copper sulfate solution with an initial concentration of ions of 50 mg/l and a pH of 3. The solution was filled in a cuvette with a nozzle consisting of metal

TOLOK The cuvette was placed in a magnetic field with a strength of 1 bOkA/m for 5 minutes.

The following examples are similar to the described one and differ in the exposure time of the cuvette with the solution in the external magnetic field. The obtained data are shown in Table 3. nn s tt : i o

Ltovervtsi mon 1

Ф зо вв щ 4141 1ю1111вм

F

As can be seen from the table, yeast does not have time to absorb copper in 1 minute, the maximum amount of copper (up to 70905) g) is absorbed by yeast biomass in the first 5 minutes, the last 2295 - during one time. This shows that the time of sorption of copper ions with yeast is 5-60 minutes, and the acceleration of the sorption process by yeast Zasspagotusez segemisiae with the help of a high-gradient magnetic field makes it possible to effectively purify highly concentrated wastewater from copper ions.

Thus, the research data showed that the purification of wastewater from copper ions due to the accumulation of "20 heavy metal ions by microorganisms significantly intensifies under the influence of a high-gradient magnetic field, p"), which allows for a high degree of purification of highly concentrated wastewater.

Claims (1)

;" " The formula of the invention y y o, Ne y. sl The method of purification of wastewater from copper ions, which includes treatment with a sorbent, which differs in that the yeast Zasspagotusevz sehemizviae is used as a sorbent, and the purification is carried out in a high-gradient (ee) magnetic field with an intensity of 40-560 kA/m for 5-60 minutes at pH values of 2-4. se) nie and ... sho Official bulletin "Industrial property". Book 1 "Inventions, useful models, topographies of integrated - and 50 microcircuits", 2005, M 8 , August 15, 2005. State Department of Intellectual Property of the Ministry of Education and Science of Ukraine. F) name) 60 b5