CN113830964A - Method for treating livestock and poultry breeding wastewater based on autotrophic denitrification process - Google Patents
Method for treating livestock and poultry breeding wastewater based on autotrophic denitrification process Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 60
- 239000002351 wastewater Substances 0.000 title claims abstract description 42
- 230000001651 autotrophic effect Effects 0.000 title claims abstract description 41
- 230000008569 process Effects 0.000 title claims abstract description 26
- 238000009395 breeding Methods 0.000 title claims abstract description 25
- 230000001488 breeding effect Effects 0.000 title claims abstract description 25
- 244000144972 livestock Species 0.000 title claims abstract description 20
- 244000144977 poultry Species 0.000 title claims abstract description 20
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 74
- 239000010802 sludge Substances 0.000 claims abstract description 48
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 37
- 239000010865 sewage Substances 0.000 claims abstract description 35
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 24
- 238000004062 sedimentation Methods 0.000 claims abstract description 22
- 239000007788 liquid Substances 0.000 claims abstract description 20
- 238000003860 storage Methods 0.000 claims abstract description 19
- 238000007599 discharging Methods 0.000 claims abstract description 18
- 238000009280 upflow anaerobic sludge blanket technology Methods 0.000 claims abstract description 17
- 239000002245 particle Substances 0.000 claims abstract description 13
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910021529 ammonia Inorganic materials 0.000 claims abstract description 11
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 8
- 230000003647 oxidation Effects 0.000 claims abstract description 8
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 8
- 238000006243 chemical reaction Methods 0.000 claims abstract description 5
- 230000001376 precipitating effect Effects 0.000 claims abstract description 5
- 239000007787 solid Substances 0.000 claims abstract description 5
- 239000007789 gas Substances 0.000 claims description 33
- 206010021143 Hypoxia Diseases 0.000 claims description 24
- 238000004659 sterilization and disinfection Methods 0.000 claims description 9
- 241001453382 Nitrosomonadales Species 0.000 claims description 8
- 230000007246 mechanism Effects 0.000 claims description 8
- AHEWZZJEDQVLOP-UHFFFAOYSA-N monobromobimane Chemical compound BrCC1=C(C)C(=O)N2N1C(C)=C(C)C2=O AHEWZZJEDQVLOP-UHFFFAOYSA-N 0.000 claims description 8
- 229910002651 NO3 Inorganic materials 0.000 claims description 7
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims description 7
- 230000001590 oxidative effect Effects 0.000 claims description 7
- 241000894006 Bacteria Species 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 6
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- 238000011084 recovery Methods 0.000 claims description 5
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- 239000004743 Polypropylene Substances 0.000 claims description 4
- 238000007872 degassing Methods 0.000 claims description 4
- 229920001903 high density polyethylene Polymers 0.000 claims description 4
- 239000004700 high-density polyethylene Substances 0.000 claims description 4
- -1 polypropylene Polymers 0.000 claims description 4
- 229920001155 polypropylene Polymers 0.000 claims description 4
- 239000000843 powder Substances 0.000 claims description 4
- 239000007800 oxidant agent Substances 0.000 claims description 3
- 239000000969 carrier Substances 0.000 claims description 2
- 238000001556 precipitation Methods 0.000 claims description 2
- 230000000630 rising effect Effects 0.000 claims description 2
- 229910052799 carbon Inorganic materials 0.000 abstract description 4
- 238000006386 neutralization reaction Methods 0.000 abstract description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 230000003116 impacting effect Effects 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
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- 241000282414 Homo sapiens Species 0.000 description 1
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 description 1
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- 238000005342 ion exchange Methods 0.000 description 1
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- 239000005416 organic matter Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/20—Nature of the water, waste water, sewage or sludge to be treated from animal husbandry
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
Abstract
The invention discloses a method for treating livestock and poultry breeding wastewater based on an autotrophic nitrogen removal process, which comprises the following steps of; the method comprises the following steps: feeding the breeding wastewater into a mechanical grid, conveying the sewage into a liquid storage tank through a solid-liquid separator, and discharging solid residues into a residue storage tank; discharging the sewage in the liquid storage tank into a UASB reactor through the bottom of the UASB reactor, introducing the sewage in the UASB reactor into the bottom of the reactor as uniformly as possible, wherein the anaerobic reaction is carried out in the process of contacting the sewage with sludge particles; and thirdly, precipitating the sewage in a middle sedimentation tank, discharging the precipitated sludge into a CSTR reactor, and feeding the sewage into a biochemical tank for autotrophic nitrogen removal. The invention can construct two different systems in a biochemical pool: the integrated anaerobic ammonia oxidation system or the multi-stage anoxic/aerobic alternate autotrophic denitrification system realizes autotrophic denitrification so as to realize carbon neutralization, can effectively treat livestock and poultry breeding wastewater, and reduces the concentrations of organic matters, total nitrogen and ammonia nitrogen.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to a method for treating livestock and poultry breeding wastewater based on an autotrophic nitrogen removal process.
Background
Excessive ammonia nitrogen discharged into water body can cause eutrophication of water body, reduce ornamental value of water body, and nitrate and nitrite generated by oxidation can influence the health of aquatic organisms and even human beings, therefore, the denitrification treatment of the wastewater is widely concerned by people, the main denitrification methods comprise biological nitrification and denitrification, breakpoint chlorination, gas stripping and air stripping, ion exchange and the like, the nitrification sludge dewatering liquid, the landfill leachate, the wastewater of a catalyst production plant, the meat processing wastewater, the wastewater of synthetic ammonia chemical industry and the like contain ammonia nitrogen with extremely high concentration, some ammonia nitrogen concentration reaches more than 500mg/L, some ammonia nitrogen concentration even reaches thousands of mg/L, the treatment method can be limited in application due to the biological inhibition of free ammonia nitrogen or cost, and the treatment method of high-concentration ammonia nitrogen wastewater can be divided into a physical-chemical method, a biochemical combined method and a novel biological denitrification method;
the livestock and poultry breeding wastewater has the characteristics of high organic matter concentration, high total nitrogen and high ammonia nitrogen, and the anaerobic reactor and aerobic biochemical treatment are mostly adopted in the treatment method of the livestock and poultry breeding wastewater.
Disclosure of Invention
The invention aims to provide a method for treating livestock and poultry breeding wastewater based on an autotrophic nitrogen removal process, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a method for treating livestock and poultry breeding wastewater based on an autotrophic nitrogen removal process comprises the following steps;
the method comprises the following steps: feeding the breeding wastewater into a mechanical grid, conveying the sewage into a liquid storage tank through a solid-liquid separator, and discharging solid residues into a residue storage tank;
step two, discharging the sewage in the liquid storage tank into a UASB reactor through the bottom of the UASB reactor, introducing the sewage of the UASB reactor into the bottom of the reactor as uniformly as possible, wherein the anaerobic reaction is generated in the process of contacting the sewage with sludge particles, the biogas generated in the anaerobic state causes internal circulation, some gas formed in a sludge layer is attached to sludge particles, the attached and unattached gas rises to the top of the reactor, the sludge rising to the surface impacts the bottom of a gas emitter of the three-phase reactor to cause degassing of sludge flocs attached with bubbles, the sludge particles are precipitated on the surface of a sludge bed after the bubbles are released, the attached and unattached gas is collected into a gas collection chamber of a three-phase separator at the top of the reactor, the biogas is collected by a gas collection cabinet, the residual sludge is discharged into a CSTR reactor, and the sewage is discharged into a settling tank for primary precipitation;
precipitating the sewage in a middle sedimentation tank for 50-60 min, discharging the precipitated sludge into a CSTR reactor, and feeding the sewage into a biochemical tank for autotrophic nitrogen removal;
and step four, the wastewater treated by the biochemical tank enters a secondary sedimentation tank, after the wastewater is precipitated in the secondary sedimentation tank, the residual sludge is sent into the CSTR reactor through a return pipeline, the upper clear liquid enters a disinfection tank, and is discharged into a recycling tank for temporary storage after being disinfected in the disinfection tank, and the treated wastewater is flushed after the index reaches the discharge standard.
Preferably, the biogas generated by the CSTR reactor enters a gas collection cabinet for collection, the biogas in the gas collection cabinet can be used for biogas power generation, and the biogas residues generated by the CSTR reactor are recycled.
Preferably, the biochemical tank adopts an autotrophic nitrogen removal process, and an integrated anaerobic ammonia oxidation system or a multi-stage anoxic/aerobic alternate autotrophic nitrogen removal system is constructed by relying on MBBR carriers to realize autotrophic nitrogen removal.
Preferably, the mechanism of the integrated anammox system is as follows: high ammonia nitrogen generates high-concentration Free Ammonia (FA) to inhibit Nitrate Oxidizing Bacteria (NOB), stable NO2 & lt- & gt is provided, and under the anoxic condition, the anaerobic ammonia oxidizing bacteria oxidize NH4 & lt + & gt-N into N2 by taking NO2 & lt- & gt-N as an oxidizing agent.
Preferably, the mechanism of the multistage anoxic/aerobic alternate autotrophic nitrogen removal system is as follows: when the oxygen deficiency and the oxygen deficiency are alternated, the activity recovery of the NOB is slower than that of the AOB when the oxygen deficiency is changed into the oxygen deficiency, the NOB is gradually eliminated through multi-stage oxygen deficiency and oxygen deficiency alternation, and the NOB can provide stable NO after being inhibited2 -And stable short-cut nitrification and denitrification are realized.
Preferably, the MBBR carrier comprises the following components in percentage by weight: 97% +/-0.5% of high-density polyethylene or polypropylene, 2.5% +/-0.2% of activated carbon powder and 0.5% +/-0.1% of broken magnet powder.
Preferably, the middle sedimentation tank and the secondary sedimentation tank are both provided with sludge discharge devices.
The method for treating livestock and poultry breeding wastewater based on the autotrophic nitrogen removal process has the beneficial effects that:
1. the invention can construct two different systems in the biochemical pool to realize autotrophic nitrogen removal, an integrated anaerobic ammonia oxidation system or a multi-stage anoxic/aerobic alternate autotrophic nitrogen removal system to realize carbon neutralization, can effectively treat livestock and poultry breeding wastewater, and reduce the concentrations of organic matters, total nitrogen and ammonia nitrogen;
2. according to the invention, the intermediate sedimentation tank is arranged behind the UASB reactor, so that firstly, anaerobic sludge overflowing from the UASB is prevented from entering a subsequent biochemical tank, and the sludge is prevented from being decomposed again and treated again; secondly, discharging phosphorus through the precipitated sludge to reduce the consumption of a carbon source for subsequent biochemical phosphorus removal;
3. the CSTR reactor converts most of organic carbon into biogas through anaerobic fermentation, the biogas is used for power generation, and the biogas residues are used for backfilling;
4. the outlet water after the disinfection treatment is used for washing the pigsty to realize the recycling of the water.
Drawings
FIG. 1 is a schematic process flow diagram of the present invention;
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to 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.
Example 1, please refer to fig. 1, the present invention provides a technical solution: a method for treating livestock and poultry breeding wastewater based on an autotrophic nitrogen removal process comprises the following steps;
the method comprises the following steps: feeding the breeding wastewater into a mechanical grid, conveying the sewage into a liquid storage tank through a solid-liquid separator, and discharging solid residues into a residue storage tank;
step two, discharging the sewage in the liquid storage tank into a UASB reactor through the bottom of the UASB reactor, introducing the sewage of the UASB reactor into the bottom of the reactor as uniformly as possible, generating an anaerobic reaction in the process of contacting the sewage with sludge particles, generating internal circulation by the methane generated in an anaerobic state, attaching some gas formed in a sludge layer to the sludge particles, ascending the attached and unattached gas to the top of the reactor, impacting the sludge on the surface to the bottom of a gas emitter of the three-phase reactor to cause degassing of sludge floc attached with bubbles, depositing the sludge particles on the surface of a sludge bed after the bubbles are released, collecting the attached and unattached gas to a gas collection chamber of a three-phase separator at the top of the reactor, collecting the methane by the gas collection chamber, discharging the residual sludge into a CSTR reactor, collecting the methane generated by the CSTR reactor into the gas collection chamber, biogas in the gas collecting cabinet can be used for biogas power generation, biogas residues generated by the CSTR reactor are recycled, and sewage is discharged into a sedimentation tank for primary sedimentation;
precipitating the sewage in a middle sedimentation tank for 50min, discharging the precipitated sludge into a CSTR reactor, feeding the sewage into a biochemical tank for autotrophic nitrogen removal, wherein the biochemical tank adopts an autotrophic nitrogen removal process and depends on an MBBR carrier, and the MBBR carrier comprises the following components in parts by weight: 97 percent +/-0.5 percent of high-density polyethylene or polypropylene, 2.5 percent +/-0.2 percent of activated carbon powder and 0.5 percent +/-0.1 percent of broken magnet powder, an integrated anaerobic ammonia oxidation system is constructed to realize autotrophic nitrogen removal, and the mechanism of the integrated anaerobic ammonia oxidation system is as follows: high ammonia nitrogen generates high-concentration Free Ammonia (FA) to inhibit Nitrate Oxidizing Bacteria (NOB), stable NO 2-is provided, and under the anoxic condition, the anaerobic ammonia oxidizing bacteria takes NO 2-N as an oxidant to oxidize NH4+ -N into N2;
step four, the wastewater treated by the biochemical tank enters a secondary sedimentation tank, after the wastewater is precipitated in the secondary sedimentation tank, the residual sludge is sent into the CSTR reactor through a return pipeline, the upper clear liquid enters a disinfection tank, and is discharged into a recycling tank for temporary storage after being disinfected in the disinfection tank, and the treated wastewater is flushed after the index reaches the discharge standard;
the mechanism of the multi-stage anoxic/aerobic alternate autotrophic nitrogen removal system is as follows: when the oxygen deficiency and the oxygen deficiency are alternated, the activity recovery of the NOB is slower than that of the AOB when the oxygen deficiency is changed into the oxygen deficiency, the NOB is gradually eliminated through multi-stage oxygen deficiency and oxygen deficiency alternation, and the NOB can provide stable NO after being inhibited2 -And stable short-cut nitrification and denitrification are realized.
Embodiment 2, please refer to fig. 1, the present invention provides a technical solution: a method for treating livestock and poultry breeding wastewater based on an autotrophic nitrogen removal process comprises the following steps;
the method comprises the following steps: feeding the breeding wastewater into a mechanical grid, conveying the sewage into a liquid storage tank through a solid-liquid separator, and discharging solid residues into a residue storage tank;
step two, discharging the sewage in the liquid storage tank into a UASB reactor through the bottom of the UASB reactor, introducing the sewage of the UASB reactor into the bottom of the reactor as uniformly as possible, generating an anaerobic reaction in the process of contacting the sewage with sludge particles, generating internal circulation by the methane generated in an anaerobic state, attaching some gas formed in a sludge layer to the sludge particles, ascending the attached and unattached gas to the top of the reactor, impacting the sludge on the surface to the bottom of a gas emitter of the three-phase reactor to cause degassing of sludge floc attached with bubbles, depositing the sludge particles on the surface of a sludge bed after the bubbles are released, collecting the attached and unattached gas to a gas collection chamber of a three-phase separator at the top of the reactor, collecting the methane by the gas collection chamber, discharging the residual sludge into a CSTR reactor, collecting the methane generated by the CSTR reactor into the gas collection chamber, biogas in the gas collecting cabinet can be used for biogas power generation, biogas residues generated by the CSTR reactor are recycled, and sewage is discharged into a sedimentation tank for primary sedimentation;
precipitating the sewage in a middle sedimentation tank for 60min, discharging the precipitated sludge into a CSTR reactor, feeding the sewage into a biochemical tank for autotrophic nitrogen removal, wherein the biochemical tank adopts an autotrophic nitrogen removal process and depends on an MBBR carrier, and the MBBR carrier comprises the following components in parts by weight: 97 percent +/-0.5 percent of high-density polyethylene or polypropylene, 2.5 percent +/-0.2 percent of activated carbon powder and 0.5 percent +/-0.1 percent of broken magnet powder, a multistage anoxic/aerobic alternate autotrophic denitrification system is constructed to realize autotrophic denitrification, and the mechanism of the multistage anoxic/aerobic alternate autotrophic denitrification system is as follows: when the anoxic/aerobic alternation is performed, the activity recovery of the Nitrate Oxidizing Bacteria (NOB) is slower than that of the Ammonia Oxidizing Bacteria (AOB) from anoxic to aerobic activity, the Nitrate Oxidizing Bacteria (NOB) are gradually eliminated through multi-stage anoxic/aerobic alternation, and the Nitrate Oxidizing Bacteria (NOB) can provide stable NO 2-after being inhibited, so that stable short-cut nitrification and denitrification are realized;
step four, the wastewater treated by the biochemical tank enters a secondary sedimentation tank, after the wastewater is precipitated in the secondary sedimentation tank, the residual sludge is sent into the CSTR reactor through a return pipeline, the upper clear liquid enters a disinfection tank, and is discharged into a recycling tank for temporary storage after being disinfected in the disinfection tank, and the treated wastewater is flushed after the index reaches the discharge standard;
the mechanism of the multi-stage anoxic/aerobic alternate autotrophic nitrogen removal system is as follows: when the oxygen deficiency and the oxygen deficiency are alternated, the activity recovery of the NOB is slower than that of the AOB when the oxygen deficiency is changed into the oxygen deficiency, the NOB is gradually eliminated through multi-stage oxygen deficiency and oxygen deficiency alternation, and the NOB can provide stable NO after being inhibited2 -And stable short-cut nitrification and denitrification are realized.
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 (7)
1. A method for treating livestock and poultry breeding wastewater based on an autotrophic nitrogen removal process is characterized by comprising the following steps: comprises the following steps;
the method comprises the following steps: feeding the breeding wastewater into a mechanical grid, conveying the sewage into a liquid storage tank through a solid-liquid separator, and discharging solid residues into a residue storage tank;
step two, discharging the sewage in the liquid storage tank into a UASB reactor through the bottom of the UASB reactor, introducing the sewage of the UASB reactor into the bottom of the reactor as uniformly as possible, wherein the anaerobic reaction is generated in the process of contacting the sewage with sludge particles, the biogas generated in the anaerobic state causes internal circulation, some gas formed in a sludge layer is attached to sludge particles, the attached and unattached gas rises to the top of the reactor, the sludge rising to the surface impacts the bottom of a gas emitter of the three-phase reactor to cause degassing of sludge flocs attached with bubbles, the sludge particles are precipitated on the surface of a sludge bed after the bubbles are released, the attached and unattached gas is collected into a gas collection chamber of a three-phase separator at the top of the reactor, the biogas is collected by a gas collection cabinet, the residual sludge is discharged into a CSTR reactor, and the sewage is discharged into a settling tank for primary precipitation;
precipitating the sewage in a middle sedimentation tank for 50-60 min, discharging the precipitated sludge into a CSTR reactor, and feeding the sewage into a biochemical tank for autotrophic nitrogen removal;
and step four, the wastewater treated by the biochemical tank enters a secondary sedimentation tank, after the wastewater is precipitated in the secondary sedimentation tank, the residual sludge is sent into the CSTR reactor through a return pipeline, the upper clear liquid enters a disinfection tank, and is discharged into a recycling tank for temporary storage after being disinfected in the disinfection tank, and the treated wastewater is flushed after the index reaches the discharge standard.
2. The method for treating livestock and poultry breeding wastewater based on the autotrophic nitrogen removal process according to claim 1, wherein the method comprises the following steps: biogas generated by the CSTR reactor enters a gas collection cabinet to be collected, the biogas in the gas collection cabinet can be used for biogas power generation, and biogas residues generated by the CSTR reactor are recycled.
3. The method for treating livestock and poultry breeding wastewater based on the autotrophic nitrogen removal process according to claim 1, wherein the method comprises the following steps: the biochemical tank adopts an autotrophic nitrogen removal process, and an integrated anaerobic ammonia oxidation system or a multi-stage anoxic/aerobic alternate autotrophic nitrogen removal system is constructed by relying on MBBR carriers to realize autotrophic nitrogen removal.
4. The method for treating livestock and poultry breeding wastewater based on the autotrophic nitrogen removal process according to claim 1, wherein the method comprises the following steps: the mechanism of the integrated anaerobic ammonia oxidation system is as follows: high ammonia nitrogen generates high-concentration Free Ammonia (FA) to inhibit Nitrate Oxidizing Bacteria (NOB), stable NO2 & lt- & gt is provided, and under the anoxic condition, the anaerobic ammonia oxidizing bacteria oxidize NH4 & lt + & gt-N into N2 by taking NO2 & lt- & gt-N as an oxidizing agent.
5. The method for treating livestock and poultry breeding wastewater based on the autotrophic nitrogen removal process according to claim 1, wherein the method comprises the following steps: the mechanism of the multi-stage anoxic/aerobic alternate autotrophic nitrogen removal system is as follows: when the oxygen deficiency and the oxygen deficiency are alternated, the activity recovery of the NOB is slower than that of the AOB when the oxygen deficiency is changed into the oxygen deficiency, the NOB is gradually eliminated through multi-stage oxygen deficiency and oxygen deficiency alternation, and the NOB can provide stable NO after being inhibited2 -And stable short-cut nitrification and denitrification are realized.
6. The method for treating livestock and poultry breeding wastewater based on the autotrophic nitrogen removal process according to claim 1, wherein the method comprises the following steps: the MBBR carrier comprises the following components in percentage by weight: 97% +/-0.5% of high-density polyethylene or polypropylene, 2.5% +/-0.2% of activated carbon powder and 0.5% +/-0.1% of broken magnet powder.
7. The method for treating livestock and poultry breeding wastewater based on the autotrophic nitrogen removal process according to claim 1, wherein the method comprises the following steps: and sludge discharge devices are arranged in the intermediate sedimentation tank and the secondary sedimentation tank.
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| CN115403143A (en) * | 2022-08-08 | 2022-11-29 | 江苏裕隆环保有限公司 | Low-carbon treatment system and process for realizing deep denitrification of high-ammonia-nitrogen wastewater |
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| CN106242162A (en) * | 2016-08-18 | 2016-12-21 | 南方创业（天津）科技发展有限公司 | The dirt of livestock and poultry farms in scale excrement and the recycling treatment process of waste water |
| CN110451743A (en) * | 2019-01-25 | 2019-11-15 | 四川能投水务投资有限公司 | A kind of municipal wastewater plant excess sludge method of resource |
| CN110482803A (en) * | 2019-09-21 | 2019-11-22 | 山东和正环保工程有限公司 | A kind of cultivating wastewater purification device |
| CN111115822A (en) * | 2020-01-20 | 2020-05-08 | 青岛思普润水处理股份有限公司 | PN/A integrated autotrophic nitrogen removal system based on MBBR and quick starting method |
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| CN115403143A (en) * | 2022-08-08 | 2022-11-29 | 江苏裕隆环保有限公司 | Low-carbon treatment system and process for realizing deep denitrification of high-ammonia-nitrogen wastewater |
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