SU1122625A1 - Method and apparatus for processing effluents from animal breeding factories - Google Patents

Abstract

1. A method of treating waste of livestock enterprises, consisting in that the initial mass is crushed, stirred and disinfected, characterized in that, in order to increase the sanitary effect of the treatment, disinfection is carried out by reagent and / or heat treatment of the mass in a thin layer between two disks, the relative speed of rotation of which is 200-300 revolutions per second. 2. A device for processing waste of livestock enterprises, containing a movable and fixed discs with recesses in the center, forming a grinding and mixing chamber, while the movable disc in the recess is equipped with cutting elements, and the fixed disc has an input unit (Outlet Mass, different to that of that, in order to improve the sanitary effect of the treatment, the fixed disk is provided with a heating element and / or nozzles for supplying the reagent located in its peripheral part, set gen tally at an angle of 20-60 & d eg; To horizontal. 9d K9 SP

Description

This invention relates to a technique for treating wastewater from livestock farms and slurry. The known method of heat treatment of suspensions and a device for its implementation, containing the mixing and disinfecting unit of sediment 1. The disadvantages of this method and the means for its implementation are low disinfection efficiency due to the low heat transfer coefficient in the treated mass, and unacceptability for treatment of wastewater containing a substantial number of large inclusions, in which microorganisms can be preserved, as well as low productivity and design complexity of the device va. A known method for treating wastewater from livestock breeding enterprises is that the initial mass is crushed, mixed, and disinfected m. The disadvantage of this method is the low efficiency of sanitary disinfection of wastewater. A device for treating cattle-breeding wastewaters is known, which contains movable and movable discs with grooves in the center, forming a grinding and mixing chamber, while the movable disc in the groove is equipped with cutting elements and the stationary mass input unit 3J. A disadvantage of the known device is also the low efficiency of sanitary disinfection of wastewater. The purpose of the invention is. Improving the treatment effect. The goal is achieved according to the method according to the principle that the initial mass is reduced, mixed and disinfected, disinfection is carried out by reagent and / or heat treatment of the mass in a thin layer between two disks, the relative speed of which is 200 -300 rev / s The device contains movable and fixed disks with grooves in the center, forming a grinding and mixing chamber, while the movable disk in the notch is equipped with cutting elements, and the stationary unit for inputting the initial mass, the fixed disk is equipped with a heating element located in its peripheral part and / or nozzles for supplying the reagent, installed tangentially at an angle of 20-60 ° to the horizontal. FIG. 1 shows a device with heating elements; in fig. 2 - the same, with reagent supply nozzles; in fig. 3 shows section A-A in FIG. 2; in fig. 4 shows a section BB in FIG. 2; in fig. 5 - dependence. the degree of disinfection from the frequency of rotation of the disk; in FIG. 6 shows the dependence of the degree of disinfection on the angle of inclination of flat-jet nozzles. The device in which the proposed method is implemented comprises a movable 1 and a fixed 2 disks with notches in the center forming a grinding and mixing chamber. The movable disk 1 is provided in the recess with cutting elements 3, and the stationary disk is equipped with an input unit for the initial mass, made in the form of a bunker 4, and heating elements 5 and / or nozzles 6 inlets for entering the reagent installed tangentially at an angle of 20-60 to the horizontal. Both disks 1 and 2 are placed in the housing 7, which has the outlet pipe 8 of the neutralized mass and the heat exchanger 9 located under it. The proposed method is implemented in the device as follows. The processed mass, having solid inclusions, flows through the receiving bin 4 to the fast-rotating disk 1 and, grinding through the mutual movement of solid particles by centrifugal forces, is transported to the calibration gap between the disks 1 and 2, then bluntly leaves the recirculation chamber of the shredder, and particles of large sizes are recycled until, as a result of abrasion, they do not reach a given value. In the calibration gap, a thin mass flow is created, which at the time of passage on the surface of the upper disk is subjected to pulsed thermal effects. The heated mass is cooled in the heat exchanger 9, giving out heat to the newly entering mass. Relative

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the speed of rotation of the discs is in the range of 200-300 revolutions per second. A jump in the effect of neutralization is observed in this interval (Fig. 5).

In addition to thermal effects during disinfection, the device provides for the implementation of a chemical method for disinfecting wastewater. In this case, chemicals (formalin, ammonium persulfate, slaked lime, etc.) are fed to tone 226254,

slurry flow using flat-jet nozzles 6, installed tangentially at an angle of 20-60 to the horizontal (Fig. 6).

The proposed method and device can prevent the contamination of the environment with pathogens and other microorganisms contained in wastewater from livestock farms 10.

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Claims (2)

1. A method of treating wastewater from livestock enterprises, namely, that the initial mass is crushed, mixed and disinfected, characterized in that, in order to increase the sanitary effect of the treatment, disinfection is carried out by reagent and / or heat treatment of the mass in a thin layer between two disks , the relative rotation speed of which is 200-300 r / s. 2. A device for treating wastewater from livestock enterprises, containing a movable and fixed disks with recesses in the center, forming a grinding and mixing chamber, while the movable disk in the recess is equipped with cutting elements, and the fixed disk has an input unit for the initial mass, characterized in that, for the purpose of to increase the sanitary effect of processing, the fixed disk is equipped with a heating element and / or nozzles for supplying the reagent located in its peripheral part, which are established tangentially. at an angle of 20-60 ° to the horizontal.