SU1428718A1 - Methane tank for separate fermentation of liquid and solid waste - Google Patents

Abstract

This invention relates to the anaerobic treatment of solid and liquid waste waste. The purpose of the invention is to increase productivity by speeding up the process of biochemical oxidation of solid and liquid wastes, improving the quality of stabilized products and increasing the reliability of the methane tank. The digester includes tanks 2 and 8 for smashing

Description

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neither solid and liquid wastes, units. I and 7 of solid and liquid wastes, and unloading units A and 9 of stabilized product. The device also includes an autoclave 13 with an ejector 14 connected to the steam line 7. The initial solid waste through the loading unit 1, where the stabilized product with a temperature of 35 and the biologically active substance with a temperature above 100 ° C are simultaneously fed into tank 2. From tank 2, liquid product through the septum 3, the pipes 5 are directed to the tank 8, where the initial liquid waste and biologically active substances are simultaneously supplied. A part of the liquid stabilized product from the tank 8 enters the autoclave 13, where it is heated to a temperature above 100 ° C to form biologically active substances, which are supplied to the tanks 2 and 8 by conduit 19 and 20 by maintaining the optimum plant temperature. regime and stimulation of the processes of digestion by introducing biologically active substances after the autoclave. 2 Il.

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The invention relates to the anaerobic treatment of solid and liquid waste waste and can be used. but at the stations of purification of urban and industrial wastewater, as well as in the treatment of wastewater from livestock breeding complexes,.

The purpose of the invention is to increase productivity by accelerating the process of biochemical oxidation of solid and liquid wastes, improving the quality of stabilized products and improving the reliability of the methanetar.

FIG. 1 depicts a digester for separate fermentation of solid and liquid wastes, general view; in fig. 2, node I in FIG. I. ,

The digester includes a solid waste loading unit 1, a solid waste fermentation tank 2, an internal perforated partition 3, a solid stabilized product unloading unit 4, drain pipes 5, methane drain pipe 6, a liquid waste loading unit 7, a fermentation tank 8 waste, pipe 9 for removal of the stabilized liquid product, pump 10 for supplying the liquid stabilized product through the circulation pipeline 11. into the tank 2 through the loading unit 1. On branch 12 of the circulation pipe 11 is placed

autoclave 13, at the entrance to which the mustache

The ejector 14 is installed, the pressure nozzle 15 of which is communicated by pipe 1 to the steam pipe 17, and the suction inlet 18 of the ejector 14 is connected to branch 12. The outlet from the autoclave 13 is connected by pipe lines 19 and

20dl supply of biologically active substances, respectively, with the node 1 loading solid waste and node 7 loading liquid waste. Drain pipe 5 communicated through the pipeline

21 with a capacity of 22 to collect a stabilized product.

The methane tank works as follows.

The initial solid waste enters the loading unit 1, where a liquid stabilized product with a temperature of 35-55 ° C and a biologically active substance with a Bbmie temperature of 100 ° C is simultaneously supplied. In the loading unit 1, the initial solid waste is mixed and partially heated. The mixture of the initial solid waste liquid stabilized product and biologically active substance enters the tank 2, within which there is at the same time heat transfer from the biologically active substance to the solid waste and the liquid stabilized product. As a result of this process, the temperature of the mixture is equalized and is in the optimal range of 35- 55 С, Availability in tank 2 of optimal temperature

and the biologically active substance accelerates the process of fermenting solid waste. The fermented solid product is discharged from the tank 2 through the discharge unit 4 and sent for recycling. During the fermentation process of solid waste into the tank 2, the liquid product is continuously separated through the internal perforated bulkhead 3 and through the drain pipes 5 is sent to the tank 8 to ferment liquid waste, In the same container 9, source liquid waste and biologically active substance are supplied through loading unit 7. Due to the high temperature (more) of the biologically active substance, the temperature of the liquid waste reaches the optimum. 35–55 ° C, and the presence in the tank of 8 biologically active substances helps to accelerate the flow of enzymatic reactions in / anaerobic compounds x,

During the fermentation of solid waste in the tank 2 and liquid waste in the tank 8, methane gas is discharged, which is discharged through pipes 6 for further use.

Stabilized in tank 8

the liquid product is taken up by the pump 10 through the pipeline 9 and is supplied through the circulation pipe 11 to the loading unit 1 of the tank 2 for fermentation of solid waste. Part of the liquid stabilized product from the circulating pipe 11 via branch 12 enters the autoclave 13 via the ejector 14 through its suction inlet 18 connected to branch 12, the portion of the liquid stabilized product supplied to the autoclave 13 is fed into the ejector 14 through the pressure nozzle 15, connected by pipeline 16 to the steam pipe 17. The use of steam as an ejecting agent allows not only to feed the liquid stabilized product into the autoclave 13, but also to heat it from the product to a temperature above 100 ° C under superatmospheric pressure. The presence in the autoclave 13 of an ambient temperature of more than 100 ° C and a higher atmospheric pressure makes it possible to bring the process in it to the formation of steam within the cellular substance. Due to the steam-and-thermal and thermal effects, rapid destruction of the shells occurs.

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and anaerobic microbial cells to produce a biologically active substance as a stimulating product for the fermentation process of organic waste. The biologically active substances obtained in the autoclave 13 at an overpressure enter through the conduit 19 into the reservoir 2 through the unit 1 loading solid waste and through the conduit 20 into the reservoir 8 through the unit 7 loading liquid wastes Enters the containers 2 and 8 heated to a temperature more biologically active substances helps to maintain optimal temperature conditions for the fermentation of solid and liquid wastes without the installation of special heat exchangers in them, and also accelerates the process of enzymatic reactions, increasing The number of new cells of anaerobic microorganisms and leads to the acceleration of their growth. The invention allows to intensify the process of biochemical oxidation of organic substances in solid and liquid wastes, to reduce the duration of their fermentation, reduce the volume of digesters, increase their productivity, improve the quality of stabilized products due to a higher degree of decomposition of organic substances. The exclusion of a heat exchange serum from the digester increases the reliability of the collection of solid and liquid wastes and the operation of

total digester in general, I

The proposed digestion agent, by stimulating the digestion processes of biologically active substances after the autoclave, allows increasing the productivity of anaerobic digestion facilities for solid and natural waste by 15-25%, while simultaneously increasing the digestion depth of organic substances,

Claims (1)

Invention Formula A digester for separate fermentation of solid and liquid wastes containing a container for fermenting solid wastes with loading and unloading units, communicated by means of drain pipelines with a container for digesting solid wastes, having a heat exchanger, loading and unloading units for liquid wastes and communicated by means of a pump and circulation pipe with solid waste loading unit, which, in order to increase productivity by accelerating the process of biochemical oxidation of solid and liquid waste, The quality of stabilized products and increased reliability of operation, the heat exchanger is complete in the form of an autoclave, the working temperature is 100 ° C, with an ejector, while the discharge nozzle of the ejector is in communication with the steam line, the suction nozzle is connected to the circulation pipe, and the autoclave is connected to the nodes with pipes loading solid and liquid waste. 1B 2.