CN214360916U

CN214360916U - Equipment for treating organic waste by utilizing combined methane fermentation

Info

Publication number: CN214360916U
Application number: CN202022573548.9U
Authority: CN
Inventors: 不公告发明人
Original assignee: Chongqing Duoarc Technology Co ltd
Current assignee: Chongqing Duoarc Technology Co ltd
Priority date: 2020-11-10
Filing date: 2020-11-10
Publication date: 2021-10-08
Anticipated expiration: 2030-11-10

Abstract

The utility model relates to the field of water treatment equipment, in particular to equipment for treating organic waste by utilizing combined methane fermentation, which comprises a solid-liquid separation device, a solid-liquid separation device and a liquid-liquid separation device, wherein the solid-liquid separation device is used for separating the solid part and the liquid part of the organic waste; a methane fermentation tank for performing methane fermentation on the solid part separated by the solid-liquid separator; a dissolving tank for dissolving the methane fermentation sludge discharged from the methane fermentation tank; an ammonia gas transfer device for converting ammonia recovered from the dissolving tank from gas to liquid; and an upstream methane fermentation tank for performing methane fermentation on the liquid part discharged from the solid-liquid separation device and the liquid ammonia discharged from the ammonia gas transfer device by an upflow anaerobic sludge bed method. The apparatus solves conventional problems in a complicated methane fermentation process, and can treat organic wastes very efficiently and simply by using the advantages of methane fermentation.

Description

Equipment for treating organic waste by utilizing combined methane fermentation

Technical Field

The utility model relates to a water treatment facilities field specifically is an utilize equipment of jointly methane fermentation processing organic waste.

Background

In the method of decomposing organic materials in wastes while recovering methane by methane fermentation, the entire wastes are generally treated by conventional methane fermentation, which requires an ultra-large capacity methane fermenter because of the residence time of 20 to 30 days. While the upflow anaerobic sludge bed process separates the waste into a solid fraction containing primarily solid organic matter and a liquid fraction containing primarily soluble organic matter, with the solid and liquid fractions being treated by conventional methane fermentation. The presently disclosed methane mixed fermentation method cannot achieve the target treatment as a whole because the conventional methane fermentation treatment results in insufficient solid decomposition performance. In addition, the increase in the ammonia concentration in the dissolving tank and the decrease in the activity of the microorganisms lead to insufficient nitrogen content in the liquid fraction, and therefore, the effect of treatment on the liquid fraction is still not satisfactory.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problems, the present invention provides an apparatus for treating organic waste using combined methane fermentation, which solves conventional problems in a complicated methane fermentation method and can very effectively and simply treat organic waste using the advantages of methane fermentation.

The utility model provides a following technical scheme:

an apparatus for treating organic waste by combined methane fermentation, comprising: a solid-liquid separation device for separating a solid portion and a liquid portion of the organic waste; a methane fermentation tank for performing methane fermentation on the solid part separated by the solid-liquid separator; a dissolving tank for dissolving the methane fermentation sludge discharged from the methane fermentation tank; an ammonia gas transfer device for converting ammonia recovered from the dissolving tank from gas to liquid; and an upstream methane fermentation tank for performing methane fermentation on the liquid part discharged from the solid-liquid separation device and the liquid ammonia discharged from the ammonia gas transfer device by an upflow anaerobic sludge bed method.

Preferably, the solid-liquid separation device may supply organic waste and may discharge a separated solid portion and a liquid portion, and the solid portion and the liquid portion separated from the solid-liquid separation device may be transferred to the methane fermentation tank and the upstream methane fermentation tank, respectively.

Preferably, the methane fermenter can perform methane fermentation of the solid component by the solid portion supply means, and can discharge methane fermentation sludge produced after the methane fermentation treatment. The dissolving tank is supplied with methane fermentation sludge through the methane fermentation sludge supply device, so that the methane fermentation sludge can be dissolved, and dissolved products generated after dissolution can be discharged all the time.

Preferably, the ammonia gas discharged from the ammonia gas transfer device is methane, and an up-flow anaerobic sludge bed method is adopted, and the method can perform methane fermentation treatment and is performed together with the discharged ammonia gas.

Preferably, the apparatus further comprises a method of processing organic waste comprising a liquid portion and a solid portion, the first step separating the organic waste into a solid portion and a liquid portion; secondly, performing methane fermentation treatment on the solid part obtained in the first step; thirdly, dissolving and deaminating the methane fermentation sludge obtained in the second step and the liquid part obtained in the first step; and a fourth step of subjecting the lysate obtained in the three steps to methane fermentation treatment by an upflow anaerobic sludge blanket process.

Preferably, the liquid fraction contains organic matter that does not contain a nitrogen source required for the growth of methane-fermenting bacteria in an upflow anaerobic sludge blanket process, and the apparatus has good treatment effects and is simple to operate.

Preferably, the temperature condition for the dissolution treatment in the third step is 70 to 95 ℃.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Reference numerals: 1 organic waste material; 2, a solid-liquid separation device; 3 a liquid portion supply means; 4 a solid portion supply means; 5, a methane fermentation tank; 6 methane fermentation sludge supply device; 7, a dissolving tank; 8, a solute returning device; 9 a solute supply device; 10 an ammonia gas supply device; 11 an ammonia gas transfer device; 12 a liquid ammonia supply; 13 an upstream methane fermentation tank; 14 a methane fermentation treatment substance supply device; 15 a waste storage tank; 16 discharge means.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be described below clearly and completely with reference to the accompanying drawings of the embodiments of the present disclosure. It is to be understood that the described embodiments are only a few embodiments of the present disclosure, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the disclosure without any inventive step, are within the scope of protection of the disclosure.

As shown in FIG. 1, an apparatus for treating organic waste by integrated methane fermentation comprises a solid-liquid separation unit 2, the solid-liquid separation unit 2 separating an organic waste 1 into a solid portion and a liquid portion, and methane for subjecting the solid portion separated by the solid-liquid separation unit 2 to methane fermentation treatment; a dissolving tank 7 that performs solubilization treatment of the methane fermentation tank 5 and the methane fermentation sludge obtained in the methane fermentation tank 5 and can convert ammonia into gas; the ammonia gas transfer device 11 converts ammonia gas from gas to liquid. The apparatus further comprises an upstream methane fermentation tank 13 for fermentation treatment, and the upstream methane fermentation tank 13 may also treat the dissolved product discharged from the dissolution tank 7 with a part of the liquid separated by the solid-liquid separation device 2 and the ammonia gas transfer device 11. The ammonia gas discharged from the ammonia gas transfer device 11 is methane, and an up-flow anaerobic sludge bed method is adopted, and the method can be used for methane fermentation treatment and is carried out together with the discharged ammonia gas.

The solid-liquid separation device 2 can supply the organic waste material 1 and can discharge the separated solid portion and liquid portion, and the solid portion and liquid portion separated from the solid-liquid separation device 2 can be fed to the methane fermentation tank 5 and the upstream methane fermentation tank 13, respectively. The liquid portion supply device 3 is for supplying the liquid portion separated by the solid-liquid separation device 2 to the upstream methane fermentation tank 13, and the solid portion supply device 4 is for supplying the solid portion separated by the solid-liquid separation device 2 to the methane fermentation tank 5.

The methane fermentation tank 5 can perform methane fermentation of the solid component by the solid portion supply device 4, and can discharge methane fermentation sludge produced after the methane fermentation treatment. The methane-fermentation sludge supply device 6 can supply the methane-fermentation sludge discharged from the methane fermentation tank 5 to the dissolving tank 7. The dissolving tank 7 can dissolve the methane-fermented sludge by supplying the methane-fermented sludge from the methane-fermented sludge supply device 6, and can discharge the dissolved product generated by the dissolution all the time. In addition, an ammonia removal device is provided in the dissolving tank 7. In the apparatus of the present invention, the discharged solute may be supplied from the dissolving tank 7 to the upstream methane fermentation tank 13 through the solute supply device 9, and the ammonia gas supply device 10 may supply the ammonia gas recovered from the dissolving tank 7 to the ammonia gas transfer device 11. The solute returning device 8 can return the discharged part of the dissolved material, and the part of the solute can be subjected to methane fermentation again, thereby improving the decomposition efficiency of the organic matter. The ammonia gas transferring means 11 comprises means for converting gaseous ammonia into a liquid. The liquid ammonia is combined with a liquid portion supply device 3 by a liquid ammonia supply device 12, and the liquid portion supply device 3 supplies the liquid portion separated by the solid-liquid separation device 2 to an upstream methane fermentation tank 13.

Soluble process products are supplied from an upstream methane fermentation tank 13 through a solute supply means 9. In addition, the upstream methane fermentation tank 13 may be subjected to a methane fermentation treatment by an anaerobic sludge blanket method, and may discharge wastewater produced after the methane fermentation treatment. The methane fermentation treatment product discharged from the upstream methane fermentation tank 13 is sent to a waste storage tank 15, where the final treatment product is temporarily stored by a methane fermentation treatment supply device 14, then sent to the waste storage tank 15, and discharged to a sewer through a discharge device 16 provided.

The apparatus also includes a method of treating organic waste comprising a liquid fraction and a solid fraction: a first step of separating the organic waste into a solid fraction and a liquid fraction; secondly, performing methane fermentation treatment on the solid part obtained in the first step; thirdly, dissolving and deaminating the methane fermentation sludge obtained in the second step and the liquid part obtained in the first step; and a fourth step of subjecting the lysate obtained in the three steps to methane fermentation treatment by an upflow anaerobic sludge blanket process. In the present invention, specific examples of the target organic waste include a juice factory, a coffee factory, a food factory, a candy factory, a dairy factory, a meat product factory, a sake factory, and the like.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An apparatus for treating organic waste by combined methane fermentation, comprising: a solid-liquid separation device for separating a solid portion and a liquid portion of the organic waste; a methane fermentation tank for performing methane fermentation on the solid part separated by the solid-liquid separator; a dissolving tank for dissolving the methane fermentation sludge discharged from the methane fermentation tank; an ammonia gas transfer device for converting ammonia recovered from the dissolving tank from gas to liquid; and an upstream methane fermentation tank for performing methane fermentation on the liquid part discharged from the solid-liquid separation device and the liquid ammonia discharged from the ammonia gas transfer device by an upflow anaerobic sludge bed method.

2. The facility for processing organic waste by integrated methane fermentation according to claim 1, wherein the liquid fraction contains organic matter that does not contain a nitrogen source required for the growth of methane fermenting bacteria.

3. The apparatus for treating organic waste by integrated methane fermentation according to claim 1, wherein the dissolving tank is used for dissolving, and the dissolving tank delivers the discharged dissolved substance to the upstream methane fermentation tank through a dissolved substance supplying means.