CN216170567U - A concentrated integrated device for liquid fertile concentration operation - Google Patents

Abstract

The utility model relates to the field of liquid fertilizer concentration equipment, and discloses a concentration integrated device for liquid fertilizer concentration operation. The concentration integrated device comprises: a rotary drum grating separation device, an immersion type ultrafiltration device and a DTRO filtration treatment device; the drum grid separation device comprises: the centrifugal machine comprises a liquid accumulation shell, a drum grating component and a centrifugal motor; the concentration integrated device separates the biogas slurry from large-particle impurities by using the centrifugal action of the rotary drum grating separation device, then deeply removes impurities from the biogas slurry by using the immersion type ultrafiltration device, removes impurities with smaller particle size, meets the requirement of the DTRO filtration treatment device on the liquid inlet precision, further filters the biogas slurry with higher precision by using the DTRO filtration treatment device, so that the operation process of concentrating the biogas slurry into liquid waste is more efficient, and the service life of the concentration integrated device is longer.

Description

A concentrated integrated device for liquid fertile concentration operation

Technical Field

The utility model relates to the field of liquid fertilizer concentration equipment, in particular to a concentration integrated device for liquid fertilizer concentration operation.

Background

At present, biogas slurry treatment mainly has three modes: 1. adopting a standard treatment method combining biological treatment with advanced treatment; 2. adopting an ecological treatment method combining a stabilization pond and an artificial wetland; 3. a biogas slurry returning method.

The field returning method is an effective way for improving the recycling value of biogas slurry, but the method has the following problems: firstly, the biogas slurry amount is large, the farm digestion capacity is insufficient, and the transportation cost is high; secondly, the concentration of each nutrient element in the biogas slurry is low; in addition, the biogas slurry has high content of suspended matters, so that the drip irrigation system is easily blocked. Therefore, the impurity removal and concentration of the biogas slurry are one of the necessary means for applying the biogas slurry concentrated into the liquid fertilizer to the field returning method.

The technology for concentrating the biogas slurry into the liquid fertilizer is mainly a membrane concentration technology, the physicochemical property of the biogas slurry is not changed in the membrane concentration process, the volume of the biogas slurry can be greatly reduced, and meanwhile, reuse water can be generated to reduce water pollution. However, the membrane concentration technology is classified into microfiltration membrane technology, ultrafiltration membrane technology, nanofiltration membrane technology and reverse osmosis membrane technology according to the filtration separation precision level due to the difference of the types of filter membrane materials; the microfiltration membrane technology and the ultrafiltration membrane technology have low separation precision, and the filtered liquid obtained by treating the biogas slurry by only adopting the microfiltration membrane technology or the ultrafiltration membrane technology cannot reach the national relevant standard; when the nanofiltration membrane technology or the reverse osmosis membrane technology is used for treating the biogas slurry, the pretreatment requirement on the front-end biogas slurry is higher, and the existing front-end pretreatment mode of the biogas slurry cannot meet the water inlet requirement of the nanofiltration membrane technology or the reverse osmosis membrane technology easily; therefore, the concentration treatment effect of the prior art on the biogas slurry is not ideal.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects, the utility model aims to provide a concentration integrated device for liquid fertilizer concentration operation, which can solve the problem that the concentration treatment effect of the prior art on biogas slurry is not ideal.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a concentration integrated apparatus for liquid fertilizer concentration operations, comprising: a rotary drum grating separation device, an immersion type ultrafiltration device and a DTRO filtration treatment device; the drum grid separation device comprises: the centrifugal separation device comprises an effusion shell, a rotary drum grating assembly and a centrifugal motor, wherein the rotary drum grating assembly is rotatably arranged in the effusion shell, the centrifugal motor is used for driving the rotary drum grating to rotate in the effusion shell, and the rotary drum grating separation device is used for separating solid large-particle impurities in biogas slurry; the submerged ultrafiltration device comprises: the membrane component comprises an immersion tank and a membrane component arranged in the immersion tank; the immersion type ultrafiltration device is used for carrying out secondary filtration operation on the biogas slurry; the DTRO filtration processing device includes: a DTRO filter unit; the DTRO filtering treatment device is provided with a stock solution inlet, a concentrated solution outlet and a chromatography solution outlet; the device is used for carrying out three-stage filtration operation on the biogas slurry; a liquid outlet of the accumulated liquid shell is communicated with a liquid inlet of the immersion tank through a first liquid adding pipe, and a liquid outlet of the membrane module is communicated with a liquid inlet of the DTRO filtering treatment device through a second liquid adding pipe; the first liquid adding pipe is provided with a first liquid pump in series; and the second liquid adding pipe is provided with a second liquid pump in series.

Preferably, the drum grid separating device further comprises a rotating shaft; a cylindrical rotating cavity is arranged in the effusion shell; the drum grating component is cylindrical, a placing cavity is arranged inside the drum grating component, and the outer wall of the drum grating component is of a grating structure; the rotating shaft horizontally penetrates through the accumulated liquid shell, the rotating drum grating component is sleeved outside the rotating shaft, and the rotating shaft is axially connected with a driving rotating shaft of the centrifugal motor.

Preferably, a liquid feeding pipe is coaxially arranged in the rotating shaft; one end of the liquid adding pipe, which is positioned in the placing cavity, is provided with a liquid adding port; one end of the liquid feeding pipe, which is positioned in the rotating cavity, is provided with a liquid inlet.

Preferably, a liquid outlet is vertically arranged at the bottom of the liquid accumulation shell in a penetrating manner, and the liquid outlet is communicated with the bottom of the rotating cavity.

Preferably, the submerged ultrafiltration device further comprises: a drainage tube; the immersion tank is positioned at the bottom of the immersion type ultrafiltration device; the membrane module is positioned in the immersion tank; the membrane module includes mount and milipore filter, the milipore filter is cylindrical structure, and the inside of milipore filter is formed with the ponding chamber, the both ends of milipore filter all are fixed with the mount, the mount that the one end of drainage tube passed the milipore filter top extends to the ponding intracavity, the other end of drainage tube pass through the aqueduct with the input intercommunication of second liquid pump.

Preferably, the number of membrane modules is 1 to 8.

Preferably, the outer wall of the drainage tube positioned in the water accumulation cavity is provided with through holes at equal intervals.

Preferably, the DTRO filtration processing means comprises two DTRO filtration units, a first DTRO filtration unit and a second DTRO filtration unit; the filtration precision of the membrane gasket in the second DTRO filtering unit is higher than that of the membrane gasket in the first DTRO filtering unit; the DTRO filtering units are respectively provided with a stock solution inlet, a concentrated solution outlet and a chromatography liquid outlet, and the stock solution inlet of the first DTRO filtering unit is communicated with the output end of the second liquid pump; the dialyzate outlet of the first DTRO filtering unit is communicated with the stock solution inlet of the second DTRO filtering unit; concentrated solution outlets of the first DTRO filtering unit and the second DTRO filtering unit are communicated with an external liquid waste collecting tank; and the dialyzate outlet of the first DTRO filtering unit is communicated with an external backwater collecting device.

The embodiment of the utility model has the following beneficial effects:

the concentration integrated device separates the biogas slurry from large-particle impurities by using the centrifugal action of the rotary drum grating separation device, then deeply removes impurities from the biogas slurry by using the immersion type ultrafiltration device, removes impurities with smaller particle size, meets the requirement of the DTRO filtration treatment device on the liquid inlet precision, further filters the biogas slurry with higher precision by using the DTRO filtration treatment device, so that the operation process of concentrating the biogas slurry into liquid waste is more efficient, and the service life of the concentration integrated device is longer.

Drawings

FIG. 1 is a schematic diagram of the configuration of the concentrating integrated device according to an embodiment of the present invention;

FIG. 2 is a schematic view of the construction of the drum grid separation device in one embodiment of the present invention;

FIG. 3 is a schematic structural view of the submerged ultrafiltration device in an embodiment of the present invention;

fig. 4 is a schematic structural diagram of the DTRO filter unit according to an embodiment of the present invention.

Wherein: the device comprises a rotary drum grating separation device 100, a liquid loading shell 110, a rotary drum grating component 120, a centrifugal motor 130, a rotating shaft 140, a liquid adding pipe 141, an immersion type ultrafiltration device 200, an immersion tank 210, a membrane component 220, a drainage pipe 221, an ultrafiltration membrane 222, a fixed frame 223, a TRO filtration treatment device 300, a first DTRO filtration unit 310, a second DTRO filtration unit 320, a stock solution inlet 311, a concentrated solution outlet 312, a chromatography solution outlet 313, a membrane gasket 314, a flow channel structure 315, a liquid guide structure 316, a connecting rod 317, a first liquid pump 340 and a second liquid pump 330.

Detailed Description

The technical scheme of the utility model is further explained by the specific implementation mode in combination with the attached drawings.

In one embodiment of the present application, as shown in fig. 1 to 4, a concentration integrated device for a liquid fertilizer concentration operation includes: a rotary drum grating separation device 100, an immersion type ultrafiltration device 200 and a DTRO filtration treatment device 300; the drum grid separation device 100 includes: the liquid accumulation device comprises a liquid accumulation shell 110, a rotary drum grating assembly 120 rotatably arranged in the liquid accumulation shell 110, and a centrifugal motor 130 for driving the rotary drum grating to rotate in the liquid accumulation shell 110, wherein the rotary drum grating separation device 100 is used for separating solid large-particle impurities in biogas slurry; the submerged ultrafiltration device 200 comprises: an immersion tank 210 and a membrane module 220 disposed within the immersion tank 210; the immersion type ultrafiltration device 200 is used for carrying out secondary filtration operation on the biogas slurry; the DTRO filter processing device 300 includes: a DTRO filter unit; the DTRO filtration treatment device 300 is provided with a stock solution inlet 311, a concentrated solution outlet 312 and a chromatography solution outlet 313; the device is used for carrying out three-stage filtration operation on the biogas slurry; a liquid outlet of the liquid loading shell 110 is communicated with a liquid inlet of the immersion tank 210 through a first liquid adding pipe 141, and a liquid outlet of the membrane module 220 is communicated with a liquid inlet of the DTRO filtration treatment device 300 through a second liquid adding pipe 141; the first liquid adding pipe 141 is provided with a first liquid pump 340 in series; the second liquid feeding pipe is provided with a second liquid pump 330 in series.

When the concentration integrated device concentrates the biogas slurry into a liquid fertilizer, the biogas slurry is firstly added into the drum grating component 120, the drum grating rotates relative to the effusion shell 110 under the drive of the centrifugal motor 130, and liquid in the biogas slurry, which can pass through the drum grating component 120, is collected in the effusion shell 110; while foreign materials that cannot pass through the drum grate assembly 120 remain in the drum grate assembly 120; the biogas slurry collected in the effusion housing 110 is conveyed to the immersion tank 210 by the suction effect of the first liquid pump 340, the membrane module 220 is immersed in the biogas slurry in the immersion tank 210, impurities in the biogas slurry are filtered and remain in the immersion tank 210, the biogas slurry passing through the membrane module 220 is sucked to the DTRO filtration treatment device 300 by the second liquid pump 330, and the DTRO filtration treatment device 300 further filters the biogas slurry with higher precision, concentrates the biogas slurry into liquid fertilizer, and separates out recycled water.

Specifically, the drum grid separating device 100 further includes a rotating shaft 140; a cylindrical rotating cavity is arranged in the effusion shell 110; the drum grating component 120 is cylindrical, a placing cavity is arranged inside the drum grating component 120, and the outer wall of the drum grating component 120 is of a grating structure; the rotating shaft 140 horizontally penetrates through the effusion housing 110, the drum grating assembly 120 is sleeved outside the rotating shaft 140, and the rotating shaft 140 is axially connected with the driving rotating shaft of the centrifugal motor 130.

A liquid feeding pipe 141 is coaxially arranged in the rotating shaft 140; one end of the liquid adding pipe, which is positioned in the placing cavity, is provided with a liquid adding port; one end of the liquid feeding pipe, which is positioned in the rotating cavity, is provided with a liquid inlet. As the effusion shell 110 and the drum grating component 120 are rotated, the biogas slurry is conveniently filled into the drum grating after the liquid adding pipe is additionally arranged; in the same way, on the premise that the sealing requirement can be ensured, the liquid accumulation shell 110 and the rotary drum grating assembly 120 can be provided with detachable door plate structures, so that sundries in the rotary drum grating assembly 120 can be cleaned conveniently.

A liquid outlet is vertically arranged at the bottom of the liquid accumulation shell 110 in a penetrating manner, and the liquid outlet is communicated with the bottom of the rotating cavity. Under the action of gravity, the separated and thrown biogas slurry in the effusion housing 110 can be discharged from the liquid outlet more quickly and cleanly.

Specifically, the submerged ultrafiltration device 200 further comprises: a drain tube 221; the immersion tank 210 is positioned at the bottom of the submerged ultrafiltration device 200; the membrane module 220 is positioned in the immersion tank 210; the membrane module 220 comprises a fixing frame 223 and an ultrafiltration membrane 222, the ultrafiltration membrane 222 is of a cylindrical structure, a water accumulation cavity is formed in the ultrafiltration membrane 222, two ends of the ultrafiltration membrane 222 are fixed with the fixing frame 223, one end of the draft tube 221 penetrates through the fixing frame 223 at the top of the ultrafiltration membrane 222 and extends into the water accumulation cavity, and the other end of the draft tube 221 is communicated with the input end of the second liquid pump 330 through a water guide tube. The ultrafiltration membrane 222 is specifically made of a filtration membrane material with separation precision by an ultrafiltration membrane technology.

Specifically, the number of the membrane modules 220 may be 1 to 8.

The outer wall of the drainage tube 221 positioned in the water accumulation cavity is provided with through holes at equal intervals; the through hole facilitates the over-separated liquid in the water accumulation cavity of the ultrafiltration membrane 222 to enter the drainage tube 221 and finally be smoothly pumped away by the second liquid pump 330.

The DTRO filtering processing device 300 comprises two DTRO filtering units, namely a first DTRO filtering unit 310 and a second DTRO filtering unit 320; the filtration precision of the membrane gasket 314 in the second DTRO filtration unit 320 is higher than that of the membrane gasket 314 in the first DTRO filtration unit 310; the DTRO filtering units are respectively provided with a stock solution inlet 311, a concentrated solution outlet 312 and a dialyzate outlet 313, and the stock solution inlet 311 of the first DTRO filtering unit 310 is communicated with the output end of the second liquid pump 330; the dialyzate outlet 313 of the first DTRO filtering unit 310 is communicated with the raw liquid inlet 311 of the second DTRO filtering unit 320; the concentrate outlets 312 of the first DTRO filtration unit 310 and the second DTRO filtration unit 320 are in communication with an external liquid waste collection tank; the dialyzate outlet 313 of the first DTRO filtering unit 310 is communicated with an external backwater collecting device. The DTRO filtration processing device 300 is provided with two DTRO filtration units, and the filtration precision of the membrane gaskets 314 in the two DTRO filtration units is different; on one hand, the biogas slurry entering the DTRO filtration treatment device 300 can be filtered and concentrated step by step with two different filtration precisions, so that the requirement of the DTRO filtration treatment device 300 on the purity of the inlet liquid can be further reduced, and the service life of the DTRO filtration treatment device 300 is longer; on the other hand, two-stage gradual filtration is performed, and the second DTRO filtration unit 320 can further concentrate and recover the over-separated liquid of the first DTRO filtration unit 310, so that the biogas slurry concentration effect is further improved.

Specifically, as shown in fig. 4, the DTRO filter unit is a conventional technology, and can be purchased directly from the market; the interlayer film sheet in the DTRO filtering unit can be independently installed and replaced, each film gasket 314 can be made of a nano-filtration film material or a permeable film material, and the filtering precision of each wave film gasket 314 can be flexibly adjusted and set according to the requirement; the DTRO filter unit includes: a thin film sheet stacked in a columnar shape and a connecting bar 317 for fixing a plurality of thin film sheets; the flow channel structure 315 is disposed outside the membrane sheet, so that the incoming raw material liquid can sequentially flow through the outside of the membrane sheet and finally be discharged from the concentrated liquid outlet 312, and the dialyzate permeating into the inside of the membrane sheet can be collected and flow along the liquid guide structure 316 disposed inside the membrane sheet and finally flow out from the dialyzate outlet 313.

The concentration integrated device separates the biogas slurry from large-particle impurities by using the centrifugal action of the rotary drum grating separation device 100, then deeply removes impurities from the biogas slurry by using the immersion type ultrafiltration device 200, removes impurities with smaller particle size, meets the requirement of the DTRO filtration treatment device 300 on the liquid inlet precision, and further filters the biogas slurry with higher precision by using the DTRO filtration treatment device 300, so that the operation process of concentrating the biogas slurry into liquid waste is more efficient, and the service life of the concentration integrated device is longer.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.

The technical principle of the present invention is described above in connection with specific embodiments. The description is made for the purpose of illustrating the principles of the utility model and should not be construed in any way as limiting the scope of the utility model. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without inventive effort, which would fall within the scope of the present invention.

Claims (8)

1. A concentrate integrated device for liquid fertilizer concentrate operation, comprising: a rotary drum grating separation device, an immersion type ultrafiltration device and a DTRO filtration treatment device;

the drum grid separation device comprises: the centrifugal separation device comprises an effusion shell, a rotary drum grating assembly and a centrifugal motor, wherein the rotary drum grating assembly is rotatably arranged in the effusion shell, the centrifugal motor is used for driving the rotary drum grating to rotate in the effusion shell, and the rotary drum grating separation device is used for separating solid large-particle impurities in biogas slurry;

the submerged ultrafiltration device comprises: the membrane component comprises an immersion tank and a membrane component arranged in the immersion tank; the immersion type ultrafiltration device is used for carrying out secondary filtration operation on the biogas slurry;

the DTRO filtration processing device includes: a DTRO filter unit; the DTRO filtering treatment device is provided with a stock solution inlet, a concentrated solution outlet and a chromatography solution outlet; the device is used for carrying out three-stage filtration operation on the biogas slurry;

a liquid outlet of the accumulated liquid shell is communicated with a liquid inlet of the immersion tank through a first liquid adding pipe, and a liquid outlet of the membrane module is communicated with a liquid inlet of the DTRO filtering treatment device through a second liquid adding pipe; the first liquid adding pipe is provided with a first liquid pump in series; and the second liquid adding pipe is provided with a second liquid pump in series.

2. The integrated concentrating device for liquid fertilizer concentrating operation according to claim 1, wherein the drum grate separation device further comprises a rotating shaft; a cylindrical rotating cavity is arranged in the effusion shell;

the drum grating component is cylindrical, a placing cavity is arranged inside the drum grating component, and the outer wall of the drum grating component is of a grating structure;

the rotating shaft horizontally penetrates through the accumulated liquid shell, the rotating drum grating component is sleeved outside the rotating shaft, and the rotating shaft is axially connected with a driving rotating shaft of the centrifugal motor.

3. The concentrating integrated device for the liquid fertilizer concentrating operation according to claim 2, wherein a liquid feeding pipe is coaxially arranged in the rotating shaft; one end of the liquid adding pipe, which is positioned in the placing cavity, is provided with a liquid adding port; one end of the liquid feeding pipe, which is positioned in the rotating cavity, is provided with a liquid inlet.

4. The concentration integrated device for the concentration operation of the liquid fertilizer as claimed in claim 3, wherein a liquid outlet is vertically formed in the bottom of the liquid accumulation shell in a penetrating manner, and the liquid outlet is communicated with the bottom of the rotating cavity.

5. The integrated apparatus for concentrating liquid fertilizer according to claim 1, wherein the submerged ultrafiltration device further comprises: a drainage tube;

the immersion tank is positioned at the bottom of the immersion type ultrafiltration device; the membrane module is positioned in the immersion tank;

the membrane assembly comprises a fixed frame and an ultrafiltration membrane, the ultrafiltration membrane is of a cylindrical structure, a water accumulation cavity is formed inside the ultrafiltration membrane, two ends of the ultrafiltration membrane are fixed with the fixed frame,

one end of the drainage tube penetrates through the fixing frame at the top of the ultrafiltration membrane and extends into the water accumulation cavity, and the other end of the drainage tube is communicated with the input end of the second liquid pump through a water guide tube.

6. The integrated concentrating device for liquid fertilizer concentrating operation according to claim 5, wherein the membrane module has 1-8 membrane modules.

7. The concentrating integrated device for the liquid fertilizer concentrating operation according to claim 5, wherein the outer wall of the drainage tube in the water accumulation cavity is provided with through holes at equal intervals.

8. The concentration integrated device for the liquid fertilizer concentration operation according to claim 1, wherein the DTRO filtration treatment device comprises two DTRO filtration units, namely a first DTRO filtration unit and a second DTRO filtration unit; the filtration precision of the membrane gasket in the second DTRO filtering unit is higher than that of the membrane gasket in the first DTRO filtering unit;

the DTRO filtering units are respectively provided with a stock solution inlet, a concentrated solution outlet and a chromatography liquid outlet, and the stock solution inlet of the first DTRO filtering unit is communicated with the output end of the second liquid pump; the dialyzate outlet of the first DTRO filtering unit is communicated with the stock solution inlet of the second DTRO filtering unit; concentrated solution outlets of the first DTRO filtering unit and the second DTRO filtering unit are communicated with an external liquid waste collecting tank; and the dialyzate outlet of the first DTRO filtering unit is communicated with an external backwater collecting device.

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