CN210287015U - Fruit and vegetable garbage dry type anaerobic fermentation biogas slurry solid-liquid separation system - Google Patents
Fruit and vegetable garbage dry type anaerobic fermentation biogas slurry solid-liquid separation system Download PDFInfo
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- CN210287015U CN210287015U CN201921237671.4U CN201921237671U CN210287015U CN 210287015 U CN210287015 U CN 210287015U CN 201921237671 U CN201921237671 U CN 201921237671U CN 210287015 U CN210287015 U CN 210287015U
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Abstract
The utility model relates to a solid-liquid separation system of dry anaerobic fermentation biogas slurry for fruit and vegetable garbage, which comprises a mechanical grid, a cyclone sand setting device, a flocculation tank and a centrifugal dehydrator; the mechanical grating is connected with a rotational flow sand setting device pipeline, the sewage outlet of the rotational flow sand setting device is connected with a flocculation tank pipeline, and the water outlet of the flocculation tank is connected with a centrifugal dehydrator pipeline. The biogas slurry sequentially passes through the grating, the sand setting, the flocculation and the centrifugal separation to remove impurities in the biogas slurry, prevent the water pump from being blocked and equipment from being worn, avoid the interference on the subsequent solid-liquid separation and realize that the solid content of the final biogas slurry is less than 1 percent.
Description
Technical Field
The utility model relates to a natural pond liquid solid-liquid separation technical field, concretely relates to fruit vegetables rubbish dry-type anaerobic fermentation natural pond liquid solid-liquid separation system.
Background
The biogas slurry is leachate generated by fermenting organic matters, is rich in various amino acids, vitamins, proteins, auxin, saccharides, nucleic acid, antibiotics and the like, and can be used as a high-quality liquid organic fertilizer to replace the application of chemical fertilizers. The dry anaerobic fermentation system has high solid content of the treated raw materials and complex components, so that the fermented biogas slurry has more solid content, impurity content and sand and stones. And many crops adopt the mode of driping irrigation to water, and too much SS in the natural pond liquid can lead to the problem such as nozzle jam, and the application on the sprinkling irrigation crops has been restricted to the concentration of natural pond liquid, consequently, need carry out solid-liquid separation to natural pond liquid, reduce the solid rate of natural pond liquid.
CN201510920711.5 discloses a biogas slurry and residue solid-liquid separation all-in-one machine, which comprises a centrifugal mechanism, an auxiliary stirring mechanism, a shaftless spiral pressing mechanism and a squeezing mechanism; when the integrated machine is used, biogas slurry and biogas residues continuously pass through the centrifugal mechanism, the auxiliary stirring mechanism, the shaftless spiral pressing mechanism and the squeezing mechanism to sequentially complete primary centrifugal liquid removal, secondary mixing and stirring, pressure feeding of a mixture and secondary squeezing liquid removal, and the integrated machine has the advantages of high separation efficiency, good raw material adaptability and low water content of a filter cake.
However, the patent only introduces the solid-liquid separation of the biogas slurry, and does not correspondingly describe the solid-liquid separation of the biogas slurry with complex components and more impurities. The biogas slurry produced by dry anaerobic fermentation often contains impurities such as plastics, sand, glass and the like due to complex components, and if the centrifugal solid-liquid separation is directly carried out, the impurities can cause the problems of water pump blockage, equipment abrasion and the like.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: the defects of the prior art are overcome, the dry anaerobic fermentation biogas slurry solid-liquid separation system for the fruit and vegetable garbage is provided, and the problems that a water pump is blocked and equipment is easily abraded due to direct centrifugal solid-liquid separation of the conventional biogas slurry solid-liquid separation system are solved.
In order to solve the technical problem, the utility model provides a fruit and vegetable garbage dry anaerobic fermentation biogas slurry solid-liquid separation system, which comprises a mechanical grid for intercepting large impurities in the biogas slurry, a rotational flow sand setting device for separating sand and stone in the biogas slurry, a flocculation tank for flocculating SS in the biogas slurry and a centrifugal dehydrator for dehydrating the flocculated biogas slurry;
the mechanical grating is connected with a rotational flow grit chamber pipeline, a sewage outlet of the rotational flow grit chamber is connected with a flocculation tank pipeline, and a water outlet of the flocculation tank is connected with a centrifugal dehydrator pipeline.
Further, a pipe mixer is arranged on a pipeline between the rotational flow sand setting device and the flocculation tank, a dosing port of the pipe mixer is connected with a dosing tank through a dosing pipe, and a dosing pump for feeding the medicine in the dosing tank into the pipe mixer is arranged.
Further, a first stirrer for flocculating the SS is arranged in the flocculation tank.
Further, the centrifugal dehydrator comprises a biogas slurry pool, and a biogas slurry outlet of the centrifugal dehydrator is communicated with the biogas slurry pool.
Further, be provided with the second agitator that is used for stirring suspended solid in the natural pond liquid pond.
Further, the mechanical grating is an anti-fishing type mechanical grating.
The utility model has the advantages that:
the utility model discloses a method of "grid + sand setting + flocculation + centrifugal separation" gets rid of the impurity in the natural pond liquid, prevents that the water pump from blockking up and equipment wearing and tearing, avoids producing the interference to follow-up solid-liquid separation, realizes that final natural pond liquid contains solid rate < 1%.
The utility model discloses an anti-formula mechanical grid of dragging for, actuating mechanism drive sprocket is directional rotation at the uniform velocity, and after separating the solid impurity of interception from liquid, the fine grid carries the upper end reverse motion again that natural pond liquid reachd the chain, and impurity relies on the gravity landing, the getting rid of bold impurity in the effectual realization natural pond liquid.
The utility model discloses a whirl grit chamber carries out getting rid of grit, and the degritting is stable, effectively avoids the loss of organic matter, avoids the grit to follow-up solid-liquid separation equipment's wearing and tearing simultaneously.
The utility model discloses a tubular mixer carries out the flocculation and adds the medicine, adds the medicine volume through adding the control of medicine pump, and the even use of better assurance flocculating agent, natural pond liquid flocculation formation bold suspended solid strengthens the flocculation effect, improves solid-liquid separation efficiency.
The utility model discloses a centrifugal dehydrator carries out solid-liquid separation, and dewatering effect is good, and the biogas liquid contains solid rate and is less than 1% after the dehydration.
Drawings
The present invention will be further explained with reference to the accompanying drawings.
FIG. 1 is a schematic structural diagram of the dry anaerobic fermentation biogas slurry solid-liquid separation system for fruit and vegetable garbage.
Wherein: 1. a mechanical grid; 2. a cyclone sand settler; 3. a flocculation tank; 4. a centrifugal dehydrator; 5. a tubular mixer; 6. a dosing box; 7. a dosing pump; 8. a first stirrer; 9. a biogas slurry pool; 10. a second agitator.
Detailed Description
The invention will now be further described with reference to the accompanying drawings. The drawings are simplified schematic diagrams only illustrating the basic structure of the present invention in a schematic manner, and thus show only the components related to the present invention.
Example one
As shown in figure 1, the fruit and vegetable garbage dry anaerobic fermentation biogas slurry solid-liquid separation system comprises a mechanical grid 1, a cyclone sand setting device 2, a flocculation tank 3 and a centrifugal dehydrator 4. The mechanical grid 1 is connected with the cyclone sand setting device 2 through a pipeline, the sewage outlet of the cyclone sand setting device 2 is connected with the flocculation tank 3 through a pipeline, and the water outlet of the flocculation tank 3 is connected with the centrifugal dehydrator 4 through a pipeline. Wherein, mechanical grid 1 is used for holding back bold impurity in the natural pond liquid, and whirl grit chamber 2 is used for separating the grit in the natural pond liquid, and flocculation basin 3 is arranged in flocculating the SS in the natural pond liquid, and centrifugal dehydrator 4 is used for dewatering the natural pond liquid after flocculating. The mechanical grating 1 is provided with a driving mechanism and a transmission mechanism, and the transmission mechanism comprises a fine grating, a chain wheel and a chain. The driving mechanism drives the chain wheel to rotate, and the chain pulls the fine grid to move. In this embodiment, the mechanical grid 1 is an anti-fishing type mechanical grid. The driving mechanism drives the chain wheel to rotate in a uniform speed and directionally, after intercepted solid impurities are separated from liquid, the fine grids carry biogas slurry to reach the upper end of the chain and move reversely, the impurities slide down by means of gravity, separation of large impurities in the biogas slurry is effectively achieved, and water pump blockage and equipment abrasion in the subsequent process are prevented. The cyclone sand setting device 2 comprises a sand setting device and a sand pump lifting mechanism, and sand in the sand setting device is periodically pumped out by the sand pump lifting mechanism. The flocculation tank 3 flocculates SS in the biogas slurry to form large suspended matters, so that the solid-liquid separation efficiency of the rear-end centrifugal dehydrator 4 is improved. The centrifugal dehydrator 4 is adopted for solid-liquid separation, the dehydration effect is good, and the solid content of the biogas slurry is low. The fruit and vegetable garbage is treated by grating, sand setting, flocculation and centrifugal separation, so that the biogas slurry to be treated is prevented from being directly subjected to centrifugal solid-liquid separation, a water pump is prevented from being blocked and equipment is prevented from being worn, and the final biogas slurry solid content is less than 1%.
As shown in fig. 1, a pipe mixer 5 is arranged on a pipeline between the cyclone sand settling device 2 and the flocculation tank 3, a dosing port of the pipe mixer 5 is connected with a dosing tank 6 through a dosing pipe, and a dosing pump 7 for feeding the medicine in the dosing tank 6 into the pipe mixer 5 is arranged. The dosage is controlled by the dosing pump 7, so that the uniform use of the flocculating agent is better ensured, and the flocculating effect is enhanced. A flocculating agent suitable for flocculating the biogas slurry is stored in the dosing tank 6, and a submersible pump is arranged in the flocculation tank 3 and used for supplying liquid to the centrifugal dehydrator 4. The tubular mixer 5 is adopted to uniformly mix the biogas slurry and the flocculating agent, and the uniformly mixed biogas slurry is flocculated in the flocculation tank 3 to form large suspended matters, so that the solid-liquid separation effect of the subsequent procedure is improved.
As shown in fig. 1, a first stirrer 8 is provided in the flocculation tank 3. Through the stirring of first agitator 8 to the natural pond liquid in the flocculation basin 3, guarantee the natural pond liquid misce bene in the flocculation basin 3, SS flocculation with higher speed.
As shown in fig. 1, the solid-liquid separation system further comprises a biogas slurry tank 9, and a biogas slurry outlet of the centrifugal dehydrator 4 is communicated with the biogas slurry tank 9. The outlet of the biogas liquid pool 9 is communicated with a sewage discharge pipe, and a sewage discharge pump is arranged on the sewage discharge pipe. The biogas slurry is subjected to solid-liquid separation through a centrifugal dehydrator 4, and the solid content of the dehydrated biogas slurry is lower than 1%. The biogas slurry flows into the biogas slurry tank 9 by gravity for temporary storage, and the biogas slurry in the biogas slurry tank 9 is periodically pumped out by a sewage pump.
As shown in fig. 1, a second stirrer 10 for stirring suspended matters in the biogas slurry tank 9 is arranged in the biogas slurry tank 9. The biogas slurry in the biogas slurry tank 9 is stirred by the second stirrer 10, so that the uniformity of the biogas slurry in the tank is ensured.
Example two
As shown in fig. 1, on the basis of the first embodiment, the second embodiment provides a solid-liquid separation method for dry anaerobic fermentation biogas slurry of fruit and vegetable garbage, and the solid-liquid separation system for dry anaerobic fermentation biogas slurry of fruit and vegetable garbage in the first embodiment includes the following steps:
and step S1, intercepting large impurities in the biogas slurry through the mechanical grating 1, and enabling the intercepted impurities to rotate reversely to the other side along with the fine grating and slide down by gravity.
And step S2, enabling the biogas slurry after the impurities are intercepted to flow into the cyclone sand settling device 2, and desanding the biogas slurry. The biogas slurry forms a volute state, sand and stone settle to the bottom of the sand settling device, organic matters flow out along with sewage, and the settled sand and stone are periodically pumped out through a sand and stone pumping mechanism.
And step S3, mixing the degritted biogas slurry with a medicament through a pipe type mixer 5, and flocculating the uniformly mixed biogas slurry in a flocculation tank 3 to form a large suspended substance.
And step S4, conveying the flocculated biogas slurry to a centrifugal dehydrator 4 for dehydration, temporarily storing the dehydrated biogas slurry in a biogas slurry pool 9, and periodically pumping out the biogas slurry through a sewage pump.
In conclusion, the solid-liquid separation system and method for the dry anaerobic fermentation biogas slurry of the utility model adopt the method of 'grating + sand setting + flocculation + centrifugal separation', remove impurities in the biogas slurry, prevent the water pump from being blocked and the equipment from being worn, avoid the interference on the subsequent solid-liquid separation, and realize that the solid content of the final biogas slurry is less than 1%.
Adopt anti-formula mechanical grid of dragging for, actuating mechanism drives the sprocket and is at the uniform velocity directional rotation, and after the solid impurity that will intercept separates out from liquid, the upper end that fine grid carried debris and reachd the chain reverse motion again, and the landing of impurity relies on gravity, and the effectual removal that realizes bold impurity in the natural pond liquid.
The cyclone sand setting device is adopted to remove sand and stone, so that the sand removal is stable, the loss of organic matters is effectively avoided, and the abrasion of the sand and stone to subsequent solid-liquid separation equipment is avoided.
Adopt tubular mixer to flocculate and add the medicine, through adding the medicine pump control and adding the medicine volume, the even use of better assurance flocculating agent, SS flocculation in the natural pond liquid forms the bold suspended solid, strengthens flocculation effect, improves solid-liquid separation efficiency.
The centrifugal dehydrator is adopted for solid-liquid separation, the dehydration effect is good, and the solid content of the dehydrated biogas slurry is lower than 1%.
In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (6)
1. A fruit and vegetable garbage dry-type anaerobic fermentation biogas slurry solid-liquid separation system, which is characterized in that,
comprises a mechanical grid (1) for intercepting large impurities in the biogas slurry, a rotational flow sand setting device (2) for separating sand and stone in the biogas slurry, a flocculation tank (3) for flocculating SS in the biogas slurry and a centrifugal dehydrator (4) for dehydrating the flocculated biogas slurry;
the mechanical grating (1) is connected with the cyclone sand setting device (2) through a pipeline, the sewage outlet of the cyclone sand setting device (2) is connected with the flocculation tank (3) through a pipeline, and the water outlet of the flocculation tank (3) is connected with the centrifugal dehydrator (4) through a pipeline.
2. The fruit and vegetable garbage dry anaerobic fermentation biogas slurry solid-liquid separation system according to claim 1, characterized in that a pipeline between the cyclone sand settling device (2) and the flocculation tank (3) is provided with a tubular mixer (5), a dosing port of the tubular mixer (5) is connected with a dosing tank (6) through a dosing pipe, and a dosing pump (7) for feeding the pesticide in the dosing tank (6) into the tubular mixer (5) is arranged at the same time.
3. The fruit and vegetable garbage dry anaerobic fermentation biogas slurry solid-liquid separation system as claimed in claim 1, characterized in that a first stirrer (8) for flocculating SS is arranged in the flocculation tank (3).
4. The fruit and vegetable garbage dry anaerobic fermentation biogas slurry solid-liquid separation system according to claim 1, characterized by further comprising a biogas slurry tank (9), wherein a biogas slurry outlet of the centrifugal dehydrator (4) is communicated with the biogas slurry tank (9).
5. The fruit and vegetable garbage dry anaerobic fermentation biogas slurry solid-liquid separation system according to claim 4, characterized in that a second stirrer (10) for stirring suspended matters in the biogas slurry tank (9) is arranged in the biogas slurry tank (9).
6. The fruit and vegetable garbage dry anaerobic fermentation biogas slurry solid-liquid separation system according to claim 1, characterized in that the mechanical grating (1) is an anti-fishing type mechanical grating.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921237671.4U CN210287015U (en) | 2019-08-01 | 2019-08-01 | Fruit and vegetable garbage dry type anaerobic fermentation biogas slurry solid-liquid separation system |
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| CN201921237671.4U CN210287015U (en) | 2019-08-01 | 2019-08-01 | Fruit and vegetable garbage dry type anaerobic fermentation biogas slurry solid-liquid separation system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110240329A (en) * | 2019-08-01 | 2019-09-17 | 上海环境工程设计研究院有限公司 | Fruits and vegetables rubbish dry-type anaerobic fermentation biogas slurry solid-liquid separation system and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110240329A (en) * | 2019-08-01 | 2019-09-17 | 上海环境工程设计研究院有限公司 | Fruits and vegetables rubbish dry-type anaerobic fermentation biogas slurry solid-liquid separation system and method |
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