RU1820904C - Method for treatment of animal farm sewage and device for its realization - Google Patents

Abstract

Essence: the initial mass is crushed, mixed and disinfected in a thin layer between two counter-rotating disks. The effluent treatment device comprises a housing with a discharge pipe and two disks with radial grooves and autonomous drives mounted on shafts, one of which is hollow. 2 S.P.F L., 3 IL.

Description

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The invention relates to a technology and technique for treating wastewater of livestock complexes and can be used for treating industrial and municipal wastewater.

The aim of the invention is to reduce energy consumption, reduce material consumption and simplify the design.

In FIG. 1 is a front view of a sewage treatment apparatus; figure 2 - disk; in Fig.3 - section aa in Fig.2.

The device in which the proposed method is implemented includes a housing 1, in which the upper and lower disks 2 are located, on the working surfaces 3 of which radial grooves are made 4. The disks 2 are mounted on shafts 5 and 6 connected to autonomous drives 7 and 8. The shaft 5 of the upper disk 2 is hollow for supplying effluents to the interdisc space, and the housing 1 is provided with a discharge pipe 9.

The proposed method is implemented in the device as follows.

The effluents to be processed enter through the hollow shaft 5 into the interdisc space, in which, with a gap of less than 3 mm, they are repeatedly exposed to the working surfaces 3 with radial grooves 4 of the disks rotating in opposite directions 2. The inclusion inclusions, pathogenic and other microorganisms in the effluent grinding, as well as heat, shock and cavitation, are crushed and destroyed. Due to centrifugal sludges, the drains are transported through the interdisk gap and radial grooves 4 to the periphery of the housing 1, and then through the outlet pipe 9 and a heat exchanger (not shown in the diagram) to the recycled water supply system. The effect of complete disinfection occurs when the rotation speed of each disk 2 is more than 60 rpm.

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The thermal effect arises due to mechanical mixing and the friction forces resulting from this in a thin layer of treated effluents. Depending on the processing conditions, the temperature in the interdisk space may rise above 90 ° C.

Example 1. Tap water, previously infected with a strain of Escherichia coli K-12, containing 1 ml of 1.2 x 10 microorganisms, is fed into a device for treating wastewater, the speed of rotation of the disc with a diameter of 600 of which is 60 r / s, and the gap between them 2 ± 0.5 mm. The fluid temperature in the interdisc space is 65-70 ° C. At the exit of the device, the water does not contain microorganisms.

Example 2, Manure of pig pigment after arc sieves containing 1 x 2.3 x 10 bacteria of Escherichia coli group is fed to a sewage treatment device, the rotation speed of discs with a diameter of 600 mm with radial grooves of which is 60 r / s, and the gap between them is 2 ± 0.5 mm. The temperature of manure in the inter-disk space in the presence of inclusions is 70-75 ° C. At the outlet of the device, the manure does not contain microorganisms.

Using the proposed method for treating wastewater of livestock enterprises and a device for its implementation allows, in comparison with the existing ones, to reduce energy costs by 15%, to reduce

material consumption and simplify the design. The use of effluents treated by the claimed method in the recycling water supply of livestock enterprises reduces

consumption of natural water for technological needs by 50%. Fertilizing irrigated agricultural land with treated effluents reduces the possibility of emidemia.

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1. A method of treating stocks of livestock enterprises, including grinding the initial mass, mixing it and disinfecting in a thin layer between

two discs, one of which is made hollow, and the other rotate, characterized in that. in order to reduce energy consumption, reduce material consumption and simplify the design, the second disk is rotated in

the direction opposite to the rotation of the first disk, while both disks rotate at a speed of more than 60 rpm

2. A device for treating wastewater from livestock enterprises, including

case with outlet branch pipe and two disks,

one of which is hollow and the other

the disk is equipped with a rotation drive, which means that, in order to reduce

energy costs; reduce material consumption

and simplifying the design, the second disk is provided with a rotation drive in the opposite direction to the rotation of the first disk, both disks being made with radial grooves on the working surfaces.

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