CN111170576A

CN111170576A - Anaerobic biogas slurry treatment process

Info

Publication number: CN111170576A
Application number: CN202010047514.8A
Authority: CN
Inventors: 张长安; 谢建平; 杨海洪; 彭芳
Original assignee: Henan Yingweitai Environmental Technology Co Ltd
Current assignee: Henan Yingweitai Environmental Technology Co Ltd
Priority date: 2020-01-16
Filing date: 2020-01-16
Publication date: 2020-05-19

Abstract

The invention discloses a treatment process of anaerobic biogas slurry, which relates to the technical field related to treatment of anaerobic biogas slurry and comprises the following steps: step A: and B, aeration and step B: and D, precipitation and step C: and D, filter pressing: catalytic oxidation, step E: MBBR, step F: RO/AC, step G: and (5) discharging. The invention also discloses anaerobic biogas slurry treatment equipment which comprises supporting legs, wherein the top ends of the supporting legs are fixedly connected with a treatment box, the middle part of the top end of the treatment box is fixedly connected with a feeding pipe, the middle parts of two sides of the treatment box are respectively and fixedly provided with a cylinder, and the middle part of one side of each cylinder is fixedly connected with a telescopic rod. According to the invention, the biogas slurry is subjected to aerobic aeration treatment by using efficient micro-nano air active oxygen bubbles, so that anaerobic microorganisms in the biogas slurry are killed or are promoted to be dormant, and suspended matters and organic matters in the biogas slurry are oxidized, so that the flocculation sedimentation effect is increased. The results show that the flocculation and sedimentation of the biogas slurry have no effect without aerobic aeration treatment.

Description

Anaerobic biogas slurry treatment process

Technical Field

The invention relates to the technical field related to anaerobic biogas slurry treatment, in particular to a treatment process of anaerobic biogas slurry.

Background

The anaerobic treatment is a common process in the treatment process of high-concentration organic wastewater such as kitchen wastewater, breeding wastewater and the like, and is also a common recycling (gasifying) treatment means for perishable organic matters. Organic matters are degraded under the action of anaerobic microorganisms, and the distribution state of the organic matters in the anaerobic biogas slurry is different from that of common wastewater due to different initial organic matters and different molecular states at the end of anaerobic treatment, so that the COD (chemical oxygen demand) degradation of the biogas slurry is difficult to be effective by common Fenton oxidation and microorganism treatment processes, and the COD degradation is generally diluted and discharged after being treated to a certain degree.

Therefore, it is necessary to provide a treatment process of anaerobic biogas slurry to solve the above problems.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a treatment process of anaerobic biogas slurry, which solves the existing problems.

(II) technical scheme

In order to achieve the purpose, the invention is realized by the following technical scheme: the anaerobic biogas slurry treatment process comprises the following steps:

step A: aeration: collecting anaerobic biogas slurry into a biogas slurry tank, placing air into a micro-nano foaming device for treatment, and finally conveying the treated air to an anaerobic biogas treatment tank for treatment of biogas slurry;

and B: and (3) precipitation: standing the treated biogas slurry;

and C: and (3) filter pressing: removing sediments, and enabling the filtrate to enter an ozone micro-nano bubble catalytic oxidation treatment process;

step D: catalytic oxidation: treating the biogas slurry after filter pressing in an ozone micro-nano bubble catalytic oxidation mode;

step E: MBBR: decomposing organic pollutants in the biogas slurry in a biochemical manner, and degrading the organic pollutants in the biogas slurry to the maximum extent through aerobic treatment for 2-3 days;

step F: RO/AC: for biogas slurry with high individual salt content, the salt content needs to be further removed by RO. For biogas slurry with individual COD which does not reach the standard, COD residue which is difficult to degrade is removed through one-time activated carbon adsorption, or for areas with high discharge standard, the sewage discharge standard is improved through activated carbon adsorption;

step G: discharging: and (4) normally discharging the qualified biogas slurry.

Optionally, the step B: in the precipitation, suspended matters in the modified biogas slurry and pollution which can be adsorbed and removed by a flocculating agent are removed.

Optionally, the step C: and (4) carrying out filter pressing to remove flocculated sediments.

Optionally, the step D: the catalytic oxidation takes ozone as a hydroxyl radical initiator, the concentration of the hydroxyl radical is increased to the maximum extent by a catalyst, organic pollutants in the leachate are rapidly degraded by means of the super-strong organic matter decomposition performance of the hydroxyl radical, anaerobic microorganisms are thoroughly killed, and the microbial environment in water is changed into an aerobic environment.

The anaerobic biogas slurry treatment equipment comprises supporting legs, wherein the top ends of the supporting legs are fixedly connected with a treatment box, the middle part of the top end of the treatment box is fixedly connected with a feeding pipe, the middle parts of two sides of the treatment box are fixedly provided with cylinders, the middle part of one side of each cylinder is fixedly connected with a telescopic rod, one end of each telescopic rod is fixedly connected with an extrusion plate, and the middle part of the bottom end of the treatment box is fixedly connected with a discharge pipe;

the middle part of blow off pipe is provided with the closing plate, one side middle part fixedly connected with fixed plate of closing plate, the middle part fixedly connected with baffle of fixed plate.

Optionally, the supporting legs are provided with four, and the four supporting legs are respectively located at four corners of the bottom end of the treatment box.

Optionally, one end of the telescopic rod penetrates through the treatment box and is fixedly connected with the treatment box;

the outer side of the extrusion plate is movably connected with the inside of the treatment box.

Optionally, a plurality of through holes are formed in the middle of the extrusion plate, and the plurality of through holes are distributed in a rectangular array.

Optionally, a sealing opening is formed in the middle of the sewage draining pipe, and the inside of the sealing opening is movably connected with the outer side of the fixing plate.

Optionally, the discharging pipe has been seted up to the bottom both sides homoenergetic of handling the case, the middle part fixedly connected with valve of discharging pipe.

(III) advantageous effects

The invention provides a treatment process of anaerobic biogas slurry, which has the following beneficial effects:

(1) the process comprises the steps of firstly carrying out aerobic aeration treatment on the biogas slurry through efficient micro-nano air active oxygen bubbles, killing anaerobic microorganisms in the biogas slurry or promoting the anaerobic microorganisms to be dormant, and oxidizing suspended matters and organic matters in the biogas slurry to increase the effect of flocculation sedimentation. The results show that the flocculation and sedimentation of the biogas slurry have no effect without aerobic aeration treatment.

(2) According to the invention, biogas slurry and raw materials can be added into the treatment box through the feeding pipe for treatment, the extrusion plate can be driven to move through the cylinder and the telescopic rod, so that sludge in the biogas slurry can be removed, biogas slurry leakage can be prevented through the sealing plate, and whether the sludge is discharged or not can be controlled through the baffle.

Drawings

FIG. 1 is a schematic flow chart of the present invention.

Fig. 2 is a perspective view of the present invention.

FIG. 3 is a front cross-sectional view of the structure of the present invention.

Figure 4 is a schematic top view of the result of the structural waste pipe of the present invention.

Fig. 5 is a front view of the structure of the fixing plate of the present invention.

FIG. 6 is a schematic front view of the extrusion plate structure of the present invention.

In the figure: 1. supporting legs; 2. a treatment tank; 3. a feeding pipe; 4. a cylinder; 5. a telescopic rod; 6. a pressing plate; 7. a blow-off pipe; 8. a sealing plate; 9. a fixing plate; 10. a baffle plate; 11. a sealing strip; 12. a discharge pipe; 13. and a through hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.

In the present invention, unless otherwise expressly specified or limited, the terms "disposed," "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected or detachably connected; may be a mechanical connection; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The invention provides a treatment process of anaerobic biogas slurry as shown in figure 1, which is characterized by comprising the following steps:

and B: and (3) precipitation: standing the treated biogas slurry to remove suspended matters in the modified biogas slurry and pollution which can be adsorbed and removed by a flocculating agent;

and C: and (3) filter pressing: removing sediments, and enabling the filtrate to enter an ozone micro-nano bubble catalytic oxidation treatment process to remove flocculated sediments;

step D: catalytic oxidation: adding ozone into the decontaminated biogas slurry to mechanically treat the biogas slurry, taking the ozone as a hydroxyl radical initiator, increasing the concentration of hydroxyl radicals to the maximum extent by using a catalyst, and rapidly degrading organic pollutants in percolate by relying on the super-strong organic matter decomposition performance of the hydroxyl radicals, and simultaneously completely killing anaerobic microorganisms to change the microbial environment in water into an aerobic environment;

step G: discharging: the normal emission is carried out to the natural pond liquid of will reaching standard, carries out good oxygen aeration treatment to natural pond liquid through the micro-nano air active oxygen bubble of efficient earlier, kills anaerobic microorganism in the natural pond liquid, or impels its dormancy, and suspended substance and organic matter in the oxidation natural pond liquid simultaneously to increase the effect that the flocculation subsides. The results show that the flocculation and sedimentation of the biogas slurry have no effect without aerobic aeration treatment.

The invention provides anaerobic biogas slurry treatment equipment as shown in figures 2-6, which comprises four support legs 1, wherein the four support legs 1 are respectively positioned at four corners of the bottom end of a treatment box 2, the top end of each support leg 1 is fixedly connected with the treatment box 2, the middle part of the top end of the treatment box 2 is fixedly connected with a feeding pipe 3, biogas slurry and raw materials can be added into the treatment box 2 through the feeding pipe 3 for treatment, the middle parts of two sides of the treatment box 2 are respectively and fixedly provided with a cylinder 4, the middle part of one side of the cylinder 4 is fixedly connected with a telescopic rod 5, one end of the telescopic rod 5 penetrates through the treatment box 2 and is fixedly connected with the treatment box 2, the extrusion plate 6 can be driven to move through the cylinder 4 and the telescopic rod 5, so that sludge in the biogas slurry can be removed, one end of the telescopic rod 5 is fixedly connected with the extrusion plate 6, the outer side, the middle part of the extrusion plate 6 is provided with a plurality of through holes 13, the through holes 13 are distributed in a rectangular array, the middle part of the bottom end of the treatment box 2 is fixedly connected with a sewage discharge pipe 7, the middle part of the sewage discharge pipe 7 is provided with a sealing opening, and the inside of the sealing opening is movably connected with the outer side of the fixed plate 9;

the middle part of blow off pipe 7 is provided with closing plate 8, can prevent through closing plate 8 that natural pond liquid from leaking, whether discharge of mud can be controlled through baffle 10, one side middle part fixedly connected with fixed plate 9 of closing plate 8, the middle part fixedly connected with baffle 10 of fixed plate 9, the middle part fixedly connected with sealing strip 11 of closing plate 8, can improve the sealing performance of closing plate 8 through sealing strip 11, thereby can improve the equipment reliability, discharging pipe 12 has been seted up to the bottom both sides homoenergetic of processing box 2, the middle part fixedly connected with valve of discharging pipe 12.

The working principle of the invention is as follows: this device is at the during operation, through the inside that goes into treatment box 2 with pending natural pond liquid and catalyst addition of pan feeding pipe 3, after natural pond liquid through aeration and precipitation processing, start cylinder 4, cylinder 4 passes through telescopic link 5 and drives stripper plate 6 and remove to can go out the inside mud and dirt of natural pond liquid, thereby can make natural pond liquid pass through discharging pipe 12 and discharge, take out baffle 10 at last, make mud and dirt pass through blow off pipe 7 and discharge.

It is noted that in the present disclosure, unless otherwise explicitly specified or limited, a first feature "on" or "under" a second feature may be directly contacted with the first and second features, or indirectly contacted with the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. The anaerobic biogas slurry treatment process is characterized by comprising the following steps:

and B: and (3) precipitation: standing the treated biogas slurry;

step G: discharging: and (4) normally discharging the qualified biogas slurry.

2. The anaerobic biogas slurry treatment process according to claim 1, characterized in that:

and B, the step of: in the precipitation, suspended matters in the modified biogas slurry and pollution which can be adsorbed and removed by a flocculating agent are removed.

3. The anaerobic biogas slurry treatment process according to claim 1, characterized in that:

and C, performing the step of: and (4) carrying out filter pressing to remove flocculated sediments.

4. The anaerobic biogas slurry treatment process according to claim 1, characterized in that:

the step D: the catalytic oxidation takes ozone as a hydroxyl radical initiator, the concentration of the hydroxyl radical is increased to the maximum extent by a catalyst, organic pollutants in the leachate are rapidly degraded by means of the super-strong organic matter decomposition performance of the hydroxyl radical, anaerobic microorganisms are thoroughly killed, and the microbial environment in water is changed into an aerobic environment.