SU1561941A1 - Method and apparatus for desinfecting liquid feed - Google Patents

Abstract

This invention relates to fodder production and can be used for the antimicrobial treatment and preservation of feed, as well as the coagulation of protein juices. The purpose of the invention is to increase the performance of disinfection of liquid feed by electrolysis by intensifying the process. Milk waste is loaded into the anode chamber 2 of the diaphragm electrolyzer 9. They are heated with a current of 50 Hz to 85 ° C. Then treated with direct current. A pure product is obtained by decreasing the initial PH values by at least 0.5 units at a final process temperature of at least 89 ° C. The disinfected product is discharged through pipe 12. The method and apparatus allow to intensify the processing of liquid feeds, mainly dairy wastes, and to improve their quality. The feed disinfection time is shortened by 41.9 - 42.7%. 2 hp f-ly, 2 ill.

Description

315619414

they will intensify the process of virtue. Feed Disinfection Time

liquid feed processing is mainly reduced by 41.9-42.7%. 2 sec. and dairy waste, and increase their ka-1 zp ff-ly, 2 ill., 2 tablets.

The invention relates to fodder production and can be used for the antimicrobial processing and preservation of feed, as well as the coagulation of protein juices.

The purpose of the invention is to increase the disinfection performance of liquid feed by electrolysis by intensifying the process.

FIG. 1 shows an apparatus for re-engineering a method; in fig. 2 is a graph showing the dependence of the heating rates K (1.2) and the change in pH K p (3.4) on the density i of alternating and direct currents.

The product (dairy and other wastes with a moisture content of more than 75%) is fed through pipe b of conductor 1 into electrode chamber 2, N containing anodes 3. Two currents -. Our diaphragm chambers 5 with electrically conductive liquid and cathodes 4 ± are located inside the chamber 2 with fodder. The cathodes 4 are welded to the current collectors 6 and 7, in the upper part of which copper bolts 8 are screwed in to supply current and attach the electrodes to the cell cover 9. Oxygen and hydrogen from chambers 2 and 5 are diverted separately to the collectors 10, which increases the reliability of the device in operation. Supply and removal of electrically conductive liquid from the diaphragm chambers 5 is carried out through pipe 11. The disinfected product is removed through pipe 12. The cell body is thermally insulated. The device allows to intensify the process due to the uniform effect on the product located in the interelectrode spaces of the electric field.

Primer R.-Milk waste is loaded into the anode chamber diaphragm

electrolyzer, heated by a current with a frequency of 50 Hz, and then treated with direct current.

In tab. 1 and 2 shows the modes of sterilization of milk waste at MISU 5-10 and Mieh 10+ kn / g.

The heating rate of feed K and the change in pH K pH is determined by the formulas

to 4Јs. and to

ph h

f.

0

five

five

Based on the data of Table 1, graphs were plotted between the rates of heating and the change in pH as a function of the density of alternating and constant currents.

The heating rate of the product with alternating current K increases with i (curve 1) and exceeds K for direct current (curve 2), which does not depend on i. The opposite picture is observed for pH values: when processing dairy waste with alternating current, the pH does not change (curve 3), and during electrolysis, the rate-change pH of the CRV is a function of the current density (Fig. 2, curve 4). The results indicate that the intensity of the product processing process can be increased by using two current modes - heating with alternating current and electrochemical effects.

The decontamination time of the product with direct current in experiments 7 (Tables 1 and 2) is 11.7–10.5 minutes and exceeds Csr for a two-current treatment regime of 42s7j 41.9% (experiment 15, table 1S experience 29 tab. 2). The maximum values of K and K rc correspond to the current density of 18.6 MA / cmH (experiments 1-10 table 1). Further

an increase in i leads to mechanical destruction of the anode material.

The optimal mode of disinfection of milk waste is heating the latter with alternating current up to 85 ° C and subsequent anodic treatment, ensuring the initial pH is reduced by 0.5 units at the final process temperature of 89 ° C (test 15, table 1, test 10 , Table 2). These conditions are sufficient to completely disinfect the product. Increasing the specified optimal parameters leads

15

to energy waste

- Heating the product with an alternating current to a temperature below 85 ° C is characterized by residual bacterial contamination (experiments 11, 13, table 1, test 1, table 2) or low pH values of the pure product and an increase in the disinfection time 0 (test;

you 12, 14, tab. one). Growth Ј

given when the product is heated above

85 ° C (experiment 17, table. 1, experiment 4, table 2)

A pure product is obtained with an initial pH of not less than 30 to 0 5 units at a final process temperature of at least 89 ° C (experiment 3, 7, 12, 14, 15, 17, table 1, tests 2, 4, table 2). In other cases, residual bacterial contamination is detected.

Using two-way mode

for processing feed, it is possible to avoid significant acidification of the product pH 0.5, and when disinfecting only with direct current, the initial nil is reduced by 3.2 units.

The proposed method and device allows to intensify the process of processing liquid feeds, mainly dairy wastes, with a constant amount and to improve their quality. The disinfection time of the feed is reduced by 41.9-42.7%, and the pH values increase towards neutral by 1.6-2.7 units.

Formula

gaining

95

.

30 35

40

Claims (3)

1. A method for disinfecting liquid feeds, including the electrolysis treatment of them with direct current, characterized in that, in order to increase productivity by. process intensification, before carrying out the electrolysis, the feed is preheated to 85 ° C, and the electrolysis is carried out until the pH is reduced by less than 0.5 units at a final temperature of at least 89 ° C. 2. The method according to claim 1, characterized in that the preliminary feed preheating is performed by alternating current in an electrolysis treatment tank. 3. A device for disinfecting liquid feeds, including electrode chambers for feeds and for electrically conductive liquids, characterized in that the compartment of electrically conducting liquids is located inside the feedstuff chamber and is made up of several separate containers. Table 1