CN104891753B - A kind of sewage treatment process - Google Patents
A kind of sewage treatment process Download PDFInfo
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- CN104891753B CN104891753B CN201510400902.9A CN201510400902A CN104891753B CN 104891753 B CN104891753 B CN 104891753B CN 201510400902 A CN201510400902 A CN 201510400902A CN 104891753 B CN104891753 B CN 104891753B
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- 239000010865 sewage Substances 0.000 title claims abstract description 132
- 238000000034 method Methods 0.000 title claims abstract description 78
- 230000008569 process Effects 0.000 title claims abstract description 70
- 239000010802 sludge Substances 0.000 claims abstract description 130
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 107
- 239000006228 supernatant Substances 0.000 claims abstract description 54
- 239000011259 mixed solution Substances 0.000 claims abstract description 29
- 238000012545 processing Methods 0.000 claims abstract description 24
- 239000000701 coagulant Substances 0.000 claims abstract description 20
- 230000003647 oxidation Effects 0.000 claims description 51
- 238000007254 oxidation reaction Methods 0.000 claims description 51
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 32
- 229910052698 phosphorus Inorganic materials 0.000 claims description 30
- 239000011574 phosphorus Substances 0.000 claims description 30
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 28
- 238000006243 chemical reaction Methods 0.000 claims description 28
- 230000029087 digestion Effects 0.000 claims description 28
- 229910052760 oxygen Inorganic materials 0.000 claims description 25
- 239000001301 oxygen Substances 0.000 claims description 25
- 239000000243 solution Substances 0.000 claims description 24
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims description 22
- 230000001079 digestive effect Effects 0.000 claims description 21
- 235000011389 fruit/vegetable juice Nutrition 0.000 claims description 21
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 16
- 239000007788 liquid Substances 0.000 claims description 10
- 238000010992 reflux Methods 0.000 claims description 8
- 239000013049 sediment Substances 0.000 claims description 3
- 239000002893 slag Substances 0.000 claims description 2
- 230000014759 maintenance of location Effects 0.000 claims 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 17
- 229910052799 carbon Inorganic materials 0.000 abstract description 17
- 238000000926 separation method Methods 0.000 abstract description 9
- 238000012360 testing method Methods 0.000 abstract description 3
- 239000012295 chemical reaction liquid Substances 0.000 abstract 1
- 239000002244 precipitate Substances 0.000 abstract 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 70
- 238000004062 sedimentation Methods 0.000 description 56
- 229910021529 ammonia Inorganic materials 0.000 description 30
- 238000011084 recovery Methods 0.000 description 18
- 241000894006 Bacteria Species 0.000 description 13
- 239000000126 substance Substances 0.000 description 13
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 12
- 239000004576 sand Substances 0.000 description 10
- 239000004744 fabric Substances 0.000 description 9
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 7
- 230000001360 synchronised effect Effects 0.000 description 7
- 229910002651 NO3 Inorganic materials 0.000 description 6
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 6
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 6
- 229910052757 nitrogen Inorganic materials 0.000 description 6
- CKMXBZGNNVIXHC-UHFFFAOYSA-L ammonium magnesium phosphate hexahydrate Chemical compound [NH4+].O.O.O.O.O.O.[Mg+2].[O-]P([O-])([O-])=O CKMXBZGNNVIXHC-UHFFFAOYSA-L 0.000 description 5
- 230000008859 change Effects 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- 238000001556 precipitation Methods 0.000 description 5
- 239000002351 wastewater Substances 0.000 description 5
- 241001453382 Nitrosomonadales Species 0.000 description 4
- 241000216843 Ursus arctos horribilis Species 0.000 description 4
- 239000008239 natural water Substances 0.000 description 4
- 238000002203 pretreatment Methods 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 239000002028 Biomass Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 3
- 229920000388 Polyphosphate Polymers 0.000 description 3
- 229920000037 Polyproline Polymers 0.000 description 3
- 238000005276 aerator Methods 0.000 description 3
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L magnesium chloride Substances [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 3
- 229910001629 magnesium chloride Inorganic materials 0.000 description 3
- 230000000813 microbial effect Effects 0.000 description 3
- 239000001205 polyphosphate Substances 0.000 description 3
- 235000011176 polyphosphates Nutrition 0.000 description 3
- PDNNQADNLPRFPG-UHFFFAOYSA-N N.[O] Chemical compound N.[O] PDNNQADNLPRFPG-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 159000000013 aluminium salts Chemical class 0.000 description 2
- 229910000329 aluminium sulfate Inorganic materials 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
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- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 241000108664 Nitrobacteria Species 0.000 description 1
- JVMRPSJZNHXORP-UHFFFAOYSA-N ON=O.ON=O.ON=O.N Chemical compound ON=O.ON=O.ON=O.N JVMRPSJZNHXORP-UHFFFAOYSA-N 0.000 description 1
- WAKTWVHWRCNIKU-UHFFFAOYSA-N S(=O)(=O)(O)O.[AlH3] Chemical group S(=O)(=O)(O)O.[AlH3] WAKTWVHWRCNIKU-UHFFFAOYSA-N 0.000 description 1
- JXBAVRIYDKLCOE-UHFFFAOYSA-N [C].[P] Chemical compound [C].[P] JXBAVRIYDKLCOE-UHFFFAOYSA-N 0.000 description 1
- MMDJDBSEMBIJBB-UHFFFAOYSA-N [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] Chemical compound [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] MMDJDBSEMBIJBB-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
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- 238000011953 bioanalysis Methods 0.000 description 1
- 159000000007 calcium salts Chemical class 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
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- 238000004134 energy conservation Methods 0.000 description 1
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- 230000005484 gravity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 150000002505 iron Chemical class 0.000 description 1
- 239000011499 joint compound Substances 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 159000000003 magnesium salts Chemical class 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- -1 nitrogen-containing organic compound Chemical class 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000004375 physisorption Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- HNBDQABBWNOTRU-UHFFFAOYSA-N thalline Chemical compound C1=CC=[Tl]C=C1 HNBDQABBWNOTRU-UHFFFAOYSA-N 0.000 description 1
- 238000007039 two-step reaction Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
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- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The invention provides a kind of sewage treatment process, the technique includes：A) sewage is sequentially passed through into anaerobic and aerobic processing, obtains muddy water mixed solution；Sludge age in anaerobic and aerobic processing is 0.5~5 day, and hydraulic detention time is 0.5~3h；B) muddy water mixed solution for obtaining step a) is precipitated, and obtains supernatant and sludge；C) the supernatant Anammox for obtaining step b), obtained muddy water mixed solution separation, obtains supernatant and sludge；D) the obtained supernatants of step c) and coagulant are mixed, obtained reaction liquid precipitate obtains sludge and water outlet.The technique has higher denitrogenation dephosphorizing ability without additional carbon.Test result indicates that：Sewage is after the PROCESS FOR TREATMENT that the present invention is provided, and SS is 5~10mg/L, and COD is 30~46mg/L, and TN is 9~13mg/L, and TP is 0.3~0.5mg/L.
Description
Technical field
The present invention relates to sewage treatment process, more particularly to a kind of carbon phosphorus separated in synchronization nitrogen ultra high efficiency conversion CP-N are new
The sewage treatment process and sewage disposal system of type.
Background technology
Activated sludge process is that it originates in 1914, more than 100 using earliest, most commonly used biologic treating technique
The research and development in year, are widely used in urban wastewater treatment.Activated sludge process is the sewage based on activated sludge
The main method of biological treatment.The basic procedure of activated sludge process includes：By sewage by primary deposition processing, Air Exposure and
Secondary precipitation is handled, and obtains water outlet and sludge, by a part of sludge reflux, participates in Air Exposure；Another part sludge is as surplus
Remaining sludge discharge system.Activated sludge is micropopulation and they are depended on organic substance and the general name of inorganic substances.It is micro-
Biocenose mainly includes bacterium, protozoan etc..Activated sludge participates in active sludge treatment during its vital movement
Micropopulation from the sewage of surrounding environment, it is necessary to constantly draw its necessary nutriment, such as carbon source.At present, China
More than 80% sewage treatment process all uses activated sludge process.With the continuous improvement of draining water quality requirement, activated sludge process
Technology also develops therewith, and to meet the requirement that denitrogenation dephosphorizing is carried out to sewage, relatively famous technology has A2O, oxygen
Change ditch, SBR and its modified technique etc..
China's sewage quality is special, and carbon source is more deficient, and existing process technology is relatively low to the efficiency of utilization of carbon source,
Most of carbon source is all oxidized to carbon dioxide and synthesized micro-organism thalline, therefore can not meet while denitrogenation dephosphorizing is to carbon source
Demand, it is necessary to additional carbon reaches target that effluent quality is up to standard, considerably increase cost of sewage disposal.
The content of the invention
In view of this, it is an object of the invention to provide a kind of sewage treatment process and sewage disposal system, the present invention is carried
The sewage treatment process of confession realizes application of the Anammox technology on sewage main flow unit without additional carbon, and has
Higher denitrogenation dephosphorizing ability.
The invention provides a kind of sewage treatment process, comprise the following steps：
A) sewage is sequentially passed through into Anaerobic Treatment and Aerobic Process for Treatment, obtains muddy water mixed solution；
During sludge age in the Anaerobic Treatment and Aerobic Process for Treatment is 0.5~5 day, the Anaerobic Treatment and Aerobic Process for Treatment
Hydraulic detention time is 0.5~3h；
B) the obtained muddy water mixed solutions of the step a) are precipitated, obtains the first supernatant and the first sludge；
C) the first supernatant for obtaining the step b) carries out Anammox, obtains muddy water mixed solution；Muddy water is mixed
Close liquid to be separated, obtain the second supernatant and the second sludge；
D) the second obtained supernatants of the step c) and coagulant are mixed, obtains reaction solution, reaction solution is sunk
Form sediment, obtain the 3rd sludge and water outlet.
Preferably, the dissolved oxygen of the Anaerobic Treatment in the step a) is 0~0.2mg/L, and the dissolved oxygen of Aerobic Process for Treatment is
1.5~2.5mg/L.
Preferably, the sludge of the Anammox in the step c) is without spoil disposal.
Preferably, the dissolved oxygen of the Anammox in the step c) is 1~2mg/L.
Preferably, in addition to：The first sludge reflux that a part of step b) is obtained, participates in Anaerobic Treatment；
The first sludge that step b) described in another part is obtained carries out anaerobic sludge digestion, obtains digestive juice, methane and dirt
Mud residue.
Preferably, the hydraulic detention time of the anaerobic sludge digestion is 20~30 days.
Preferably, the temperature of the anaerobic sludge digestion is 50 DEG C~55 DEG C.
Preferably, the digestive juice is carried out to phosphorus successively to reclaim and Anammox processing.
The invention provides a kind of sewage disposal system, including：
Anaerobic pond with water inlet；
The Aerobic Pond being connected with the outlet of the anaerobic pond；
The first sedimentation basin being connected with the outlet of the Aerobic Pond；
The first anaerobic ammonia oxidation reactor being connected with the outlet of first sedimentation basin；
The separator for mud and water being connected with the outlet of first anaerobic ammonium oxidation tank；
The second sedimentation basin being connected with the outlet of the separator for mud and water, second sedimentation basin has delivery port；
The coagulant dosage device set between the separator for mud and water and the second sedimentation basin.
Preferably, the sewage disposal system also includes the anaerobic digester being connected with another outlet of the first sedimentation basin；
The phosphorus recovery device being connected with the outlet of the anaerobic digester；
The second anaerobic ammonia oxidation reactor being connected with the outlet of the phosphorus recovery device；
The outlet of second anaerobic ammonia oxidation reactor is connected with the entrance of first anaerobic ammonia oxidation reactor.
The invention provides a kind of sewage treatment process, comprise the following steps：A) by sewage sequentially pass through Anaerobic Treatment and
Aerobic Process for Treatment, obtains muddy water mixed solution；Sludge age in the Anaerobic Treatment and Aerobic Process for Treatment is at 0.5~5 day, the anaerobism
Hydraulic detention time in reason and Aerobic Process for Treatment is 0.5~3h；B) the obtained muddy water mixed solutions of the step a) are precipitated,
Obtain the first supernatant and the first sludge；C) the first supernatant for obtaining the step b) carries out Anammox, obtains mud
Water mixed liquid；Muddy water mixed solution is separated, the second supernatant and the second sludge is obtained；D) obtain the step c)
Two supernatants and coagulant mixing, obtain reaction solution, reaction solution are precipitated, obtain the 3rd sludge and water outlet.The present invention is carried
The sewage treatment process of confession has higher denitrogenation dephosphorizing ability without additional carbon.Test result indicates that：Sewage is by this
Invent provide PROCESS FOR TREATMENT after, SS be 5~10mg/L, COD be 30~50mg/L, TN be 8~15mg/L, TP be 0.3~
0.5mg/L。
Brief description of the drawings
Fig. 1 is the sewage treatment process figure that the embodiment of the present invention is used.
Embodiment
The invention provides a kind of sewage treatment process, comprise the following steps：
A) sewage is sequentially passed through into Anaerobic Treatment and Aerobic Process for Treatment, obtains muddy water mixed solution；
During sludge age in the Anaerobic Treatment and Aerobic Process for Treatment is 0.5~5 day, the Anaerobic Treatment and Aerobic Process for Treatment
Hydraulic detention time is 0.5~3h；
B) the obtained muddy water mixed solutions of the step a) are precipitated, obtains the first supernatant and the first sludge；
C) the first supernatant for obtaining the step b) carries out Anammox, obtains muddy water mixed solution；Muddy water is mixed
Close liquid to be separated, obtain the second supernatant and the second sludge；
D) the second obtained supernatants of the step c) and coagulant are mixed, obtains reaction solution, reaction solution is sunk
Form sediment, obtain the 3rd sludge and water outlet.
Referring to Fig. 1, Fig. 1 is the waste water processes schematic diagram that the embodiment of the present invention is used.In Fig. 1, including pretreatment is single
Member, anaerobic pond, Aerobic Pond, the first sedimentation basin, Anammox unit, separator for mud and water, coagulant dosage device, the second precipitation
Pond, anaerobic sludge digestion pond, phosphorus recovery device and anaerobic ammonia oxidation reactor.
Sewage is sequentially passed through Anaerobic Treatment and Aerobic Process for Treatment by the present invention, obtains muddy water mixed solution, the Anaerobic Treatment and
Sludge age in Aerobic Process for Treatment is that the hydraulic detention time in 0.5~5 day, the Anaerobic Treatment and Aerobic Process for Treatment is 0.5~3h.
In the present invention, the sewage is derived from Renmin University of China living area；In the sewage concentration of suspended solid (SS) be 150~
300mg/L；COD (COD) is 400~600mg/L；TN is all nitrogen-containing compounds in total nitrogen content, including sewage,
That is the summation of nitrite nitrogen, nitrate nitrogen, inorganic salts nitrogen, dissolved nitrogen and the nitrogen in most of nitrogen-containing organic compound, TN
Content be 60~80mg/L；TP is total phosphorus content, is exactly the total content of phosphor in sewage element, TP content is 5~7mg/L.
Sewage is preferably carried out Anaerobic Treatment by the present invention again after the pretreatment of grid sand setting.The present invention preferably enters in grid setting pot
Row grid sand setting is pre-processed.The present invention is removed the larger grid slag of the particle diameter in sewage and sand by the pretreatment of grid sand setting.
Sewage by pretreatment is carried out Anaerobic Treatment and Aerobic Process for Treatment by the present invention successively.In the present invention, it is described to detest
Oxygen processing is carried out preferably in anaerobic pond.In anaerobic pond, the phosphorus in sewage is in the presence of phosphorus bacterium is released, with the shape of orthophosphates
Formula is discharged into sewage, raises the concentration of P in sewage.It is preferably to meet the dissolved oxygen DO in the requirement for releasing P, anaerobic pond
0~0.2mg/L.In the present invention, the Aerobic Process for Treatment is carried out preferably in Aerobic Pond.In Aerobic Pond, polyP bacteria carries out P
Absorption.It is preferably 1.5~2.5mg/L to meet the DO in the demand that polyP bacteria absorbs P, Aerobic Pond.In the present invention, it is described
The volume ratio of anaerobic pond and Aerobic Pond is preferably 1:5~1:3.In the present invention, the combination of the anaerobic pond and Aerobic Pond is referred to as
Anaerobic-aerobic unit, in this element, mainly removes a large amount of COD by physisorption；In this element, utilize simultaneously
Physical absorption and bioanalysis carry out the removal of phosphorus.
In the present invention, the sludge age in the anaerobic pond and Aerobic Pond is 0.5~5 day；In the specific implementation of the present invention
In example, the sludge age of the anaerobic pond and Aerobic Pond is 3 days, 0.5 day or 5 days；Waterpower in the anaerobic pond and Aerobic Pond is stopped
It is 0.5~3h to stay the time；In a particular embodiment of the present invention, the hydraulic detention time of the anaerobic pond and Aerobic Pond is
1.5h, 3h or 0.5h.The present invention is by controlling sludge age and hydraulic detention time to carry out most COD and TP removal.At this
In invention, the hydraulic detention time value of the anaerobic-aerobic unit is relatively low, it is not necessary to big cell processing area, reduces
The floor space of sewage plant.
Because the sludge age in anaerobic pond and Aerobic Pond is shorter, therefore nitrifier is eliminated, and lacks additionally, due in system
Nitrate, denitrification will not occur in anaerobic-aerobic unit and fight for carbon source with polyP bacteria, organic carbon is efficiently used
In dephosphorization；In anaerobic-aerobic unit, the nitrobacteria in sewage is eliminated, and most ammonia-nitrogen is retained in sewage, is
Anaerobic ammonium oxidation tank in following technical proposals provides ammonia nitrogen.All it is autotrophy because dominant bacteria is most of in anaerobic-aerobic unit
Bacterium, causes excess sludge yield coefficient relatively low, reduces the surplus sludge volume in sewage disposal system.
Obtain after muddy water mixed solution, the present invention is precipitated the muddy water mixed solution, obtains the first supernatant and first
Sludge.The present invention carries out the precipitation of mixed liquor preferably in sedimentation basin well known to those skilled in the art.In order to distinguish following skills
Sedimentation basin in art scheme, the sedimentation basin that the muddy water mixed solution after Anaerobic Treatment and Aerobic Process for Treatment is precipitated is named as
First sedimentation basin.In the present invention, the first sludge reflux part first sedimentation basin produced, participates in Anaerobic Treatment；The
The reflux ratio of one sludge is preferably 50%~100%.
First sludge described in another part carries out anaerobic sludge digestion.In the present invention, the first sludge described in another part
It is preferred that carrying out anaerobic sludge digestion processing, digestive juice, methane and sludge residue are obtained.In the present invention, the anaerobic digestion is excellent
It is selected in anaerobic digester well known to those skilled in the art and carries out.In the present invention, the temperature of the anaerobic sludge digestion is excellent
Elect 50 DEG C~55 DEG C as；The hydraulic detention time of the anaerobic sludge digestion is preferably 20~30 days.
Obtain after digestive juice, the digestive juice is preferably carried out phosphorus recovery and handled with Anammox by the present invention successively.
The present invention carries out phosphorus recovery preferably in phosphorus recovery device well known to those skilled in the art.The present invention adds preferably into digestive juice
Enter magnesium salts so that Mg2+:PO4 3-Mol ratio be 3:1 carries out production guanite, phosphor resource is recycled utilization.Reclaimed in phosphorus
Following reaction occurs in journey：Mg2++PO4 3-+NH4 ++6H2O→MgNH4PO4·6H2O.The present invention is by adding chemical reagent, from dirt
Guanite is extracted in mud anaerobic digestion solution, the resource recovery of sewage plant is improved.
The present invention by excess sludge by carrying out anaerobic digestion next life methane phase；Pass through plus anaerobic sludge digestion liquid efficient
The anaerobic ammonium oxidation process of energy-conservation is handled, and Anammox unit power consumption is smaller, and sewage treatment plant's energy consumption is dropped significantly
It is low, and improve the energy-autarchic rate of sewage plant.
In the present invention, the digestive juice after phosphorus is reclaimed carries out Anammox.The present invention preferably passes through Anammox
Digestive juice after bacterium reclaims phosphorus carries out Anammox processing.The present invention is preferably in anaerobism ammonia well known to those skilled in the art
Anammox is carried out in oxidation reactor.In Anammox processing, the concentration of dissolved oxygen is preferably 1~2mg/L.Detesting
During anaerobic ammonium oxidation, the digestive juice after phosphorus recovery is completed in the presence of anaerobic ammonia oxidizing bacteria by following two-step reaction：Formula
(1)NH4 ++1.5O2→NO2 -+H2O+2H+With formula (2) NO2 -+0.5O2→NO3 -.And anaerobic ammoniation of the prior art carries out denitrogenation
Process be：(1)NH4 ++2O2→NO3 -+2H++H2O, and (2) 6NO3 -+5CH3OH+CO2→3N2+6HCO3 -+7H2O.They are right
Than understanding, 62.5% electric energy and 100% organic carbon source can be saved in theory by carrying out denitrogenation by Anammox.
Obtain after the first supernatant, first supernatant is preferably carried out Anammox by the present invention, obtain muddy water and mix
Close liquid；The muddy water mixed solution is separated, the second supernatant and the second sludge is obtained.
In the present invention, the sludge of the first supernatant progress Anammox is without spoil disposal, and its sludge age is visual
For infinity；The dissolved oxygen that first supernatant carries out Anammox is preferably 1~2mg/L.In the present invention, anaerobism ammonia
The power consumption of oxidation processes unit is smaller, and does not need additional carbon, greatly reduces sewage treatment plant's operating cost.
The present invention preferably carries out Anammox in anaerobic ammonia oxidation reactor well known to those skilled in the art.Detesting
In anaerobic ammonium oxidation reactor, ammonium oxidation is nitrogen in the presence of anaerobic ammonium oxidizing bacteria by the first supernatant.Anaerobism ammonia oxygen
It is, from oxygen type microorganism, carbon source to be used as using DIC to change bacterium.The technique that the present invention is provided realizes Anammox technology and existed
Application on sewage main flow unit.
Present invention preferably employs the separation that separator for mud and water well known to those skilled in the art carries out the muddy water mixed solution.
The second sludge, i.e. anaerobic ammonium oxidation granular activated sludge are produced in separator for mud and water.In the present invention, second sludge is returned
Stream, participates in Anammox processing together with first supernatant.
Obtain after the second supernatant, the present invention mixes second supernatant and coagulant, obtains reaction solution；Will be described
Reaction solution is precipitated, and obtains the 3rd sludge and water outlet.In the present invention, from the second isolated supernatant of separator for mud and water
Carry out entering the synchronous reinforced phosphor-removing of chemistry after efficient denitrification.In the present invention, the coagulant preferably includes calcium salt, aluminium salt or iron
Salt, more preferably aluminium salt；The present invention will determine the consumption of the coagulant according to water quality, be represented using dosage factor beta, β is
The ratio between TP concentration in added amount of chemical concentration and sewage.In a particular embodiment of the present invention, the coagulant is preferably sulfuric acid
Aluminum solutions；The dosage factor beta is preferably 2~4.In the present invention, the utilization of carbon source efficiency in sewage is higher, and auxiliary
Chemical synchronization reinforced phosphor-removing, effluent quality is greatly improved.
The reaction solution that the present invention preferably obtains mixed liquor and coagulant reaction carries out mud precipitation in the second sedimentation basin, obtains
To the 3rd sludge and water outlet.In the present invention, TP ＜ 0.5mg/L, TN ＜ 15mg/L, SS in the supernatant of second sedimentation basin
During ＜ 10mg/L, COD ＜ 50mg/L, Effluent criteria is met, you can be discharged into natural water.
The invention provides a kind of sewage disposal system, including：
Anaerobic pond with water inlet；
The Aerobic Pond being connected with the outlet of the anaerobic pond；
The first sedimentation basin being connected with the outlet of the Aerobic Pond；
The first anaerobic ammonia oxidation reactor being connected with the outlet of first sedimentation basin；
The separator for mud and water being connected with the outlet of first anaerobic ammonium oxidation tank；
The second sedimentation basin being connected with the outlet of the separator for mud and water, second sedimentation basin has delivery port；
The coagulant dosage device set between the separator for mud and water and the second sedimentation basin.
The sewage disposal system that the present invention is provided includes the anaerobic pond with water inlet.The sewage disposal system that the present invention is provided
System preferably also includes sewage pre-treatment device；The sewage pre-treatment device includes wastewater inlet and outlet；The pretreatment dress
The outlet put is connected with the water inlet of anaerobic pond.The present invention does not have special limitation to the sewage pre-treatment device, using this
Sewage pre-treatment device known to art personnel.In the present invention, the pretreatment unit includes art technology
Grid known to personnel and setting pot.In the present invention, the grid is used for intercepting debris larger in sewage, protection water pump and
Subsequent treatment structures.In setting pot, carried under one's arms being removed by the sewage of grid by the method for gravitational settling in sewage
Silt particle, mitigate the abrasion of sewage-treatment plant, sedimentation in reduction system, it is to avoid gravity spoil disposal is difficult.The present invention's
In embodiment, the grizzly bar gap of the grid is preferably 16~25mm.The present invention does not have special limitation to the anaerobic pond, adopts
With anaerobic pond well known to those skilled in the art.In a particular embodiment of the present invention, the shape of the anaerobic pond is preferred
For cuboid.Submersible agitator well known to those skilled in the art is provided with anaerobic pond；The submersible agitator is used for
The mixing of sewage and sludge, prevents sludge settling in anaerobic pond.The present invention is to the number of submersible agitator and in anaerobic pond
Position does not have special limitation, is using method to set up of the submersible agitator well known to those skilled in the art in anaerobic pond
Can.In a particular embodiment of the present invention, the volume of the anaerobic pond is preferably 0.6m3, 1 is provided with the anaerobic pond and is dived
Water agitator.
The sewage disposal system that the present invention is provided includes the Aerobic Pond being connected with the outlet of anaerobic pond.In the present invention, institute
The volume ratio for stating anaerobic pond and Aerobic Pond is preferably 1:5~1:3.In the present invention, the sewage by pretreatment is detested successively
Oxygen processing and Aerobic Process for Treatment, obtain mixed liquor.In Aerobic Pond, provided with aerator.The present invention is not special to aerator
Limitation, using aerator well known to those skilled in the art.In the present invention, the DO in the Aerobic Pond is preferably
1.5~2.5mg/L.
In the present invention, the sludge age in the anaerobic pond and Aerobic Pond be 0.5~5 day, hydraulic detention time be 0.5~
3h。
In the present invention, it is connected between the anaerobic pond and Aerobic Pond by channel.
The sewage disposal system that the present invention is provided includes the first sedimentation basin being connected with the outlet of the Aerobic Pond.First
In sedimentation basin, the mixed liquor by Anaerobic Treatment and Aerobic Process for Treatment is subjected to mud-water separation, the first sludge and the first supernatant is obtained
Liquid.In embodiments of the present invention, first sedimentation basin is specially vertical sedimentation basin.In the present invention, first precipitation
Pond includes two outlets, i.e. first outlet and second outlet, wherein, first outlet is used for the discharge of supernatant；Second outlet is used
In the discharge of the first sludge.In the present invention, the second outlet is divided into Liang Ge branches, and a branch is used for a part of described the
The backflow of one sludge；One branch is discharged progress anaerobism for the first sludge described in another part in the form of excess sludge and disappeared
Change.
The sewage disposal system that the present invention is provided includes the first anaerobism ammonia oxygen being connected with the outlet of first sedimentation basin
Change reactor.The present invention does not have special limitation to anaerobic ammonia oxidation reactor, using anaerobism well known to those skilled in the art
Ammonia oxidation reactor.In a particular embodiment of the present invention, the volume of first anaerobic ammonia oxidation reactor is
0.5m3.In the present invention, the outlet of first anaerobic ammonia oxidation reactor is connected with the entrance point of the anoxic pond.
In one anaerobic ammonia oxidation reactor, the concentration of dissolved oxygen is preferably 1.0~2.0mg/L.In the first anaerobic ammonia oxidation reactor,
First supernatant carries out Anammox, obtains muddy water mixed solution.
The sewage disposal system that the present invention is provided includes the mud being connected with the outlet of first anaerobic ammonia oxidation reactor
Separator.The present invention does not have special limitation to the separator for mud and water, using muddy water well known to those skilled in the art point
From device.In embodiments of the present invention, separator for mud and water mainly constitutes sieves by aperture by 100~300 μm of filter clothes.
In separator for mud and water, the muddy water mixed solution is separated, and obtains the second supernatant and the second sludge.
The sewage disposal system that the present invention is provided includes the second sedimentation basin being connected with the outlet of the separator for mud and water, institute
Stating the second sedimentation basin has delivery port.In the second sedimentation basin, what is obtained after second supernatant and coagulant are mixed is anti-
Answer liquid to be precipitated, obtain the 3rd sludge and water outlet.In embodiments of the present invention, second sedimentation basin is specially vertical-flow heavy
Shallow lake pond.In the present invention, second sedimentation basin includes two outlets, i.e. first outlet and second outlet, wherein, first outlet
Discharge for water outlet；Second outlet is used for the discharge of the 3rd sludge.
The sewage disposal system that the present invention is provided is mixed including what is set between the separator for mud and water and the second sedimentation basin
Solidifying agent throwing device.The present invention does not have special limitation to the coagulant dosage device, is known using those skilled in the art
Coagulant dosage device.In a particular embodiment of the present invention, the coagulant dosage device is 0.5m3Square
Container tank, inside sets 1 submersible agitator.
In the present invention, anaerobic pond, Aerobic Pond, anaerobic ammonia oxidation reactor, coagulant dosage described in above-mentioned technical proposal
Device, the first sedimentation basin and the second sedimentation basin are the main flow unit for the sewage disposal system that the present invention is provided.
The anaerobism that the sewage disposal system that the present invention is provided preferably also includes being connected with another outlet of the first sedimentation basin disappears
Change pond；
The phosphorus recovery device being connected with the outlet of the anaerobic digester；
The second anaerobic ammonia oxidation reactor being connected with the outlet of the phosphorus recovery device；
The outlet of second anaerobic ammonia oxidation reactor is connected with the entrance of first anaerobic ammonia oxidation reactor.
In the present invention, the phosphorus recovery device, the second anaerobic ammonia oxidation reactor and anaerobic digester are the present invention
The effluent unit of the sewage disposal system of offer.
The sewage disposal system that the present invention is provided preferably also includes and detesting that the second outlet of first sedimentation basin is connected
Oxygen digester.In the present invention, the anaerobic digester as sewage disposal system effluent unit.The present invention is to the anaerobism
Digester does not have special limitation, using anaerobic digester well known to those skilled in the art.In the specific reality of the present invention
Apply in example, being shaped as the anaerobic digester is cylindric；The volume of the anaerobic digester is 1m3, and added using heating tape
Heat.First sludge described in another part is carried out anaerobic digestion by the present invention in anaerobic digester, produces digestive juice, methane and dirt
Mud residue.
The phosphorus that the sewage disposal system that the present invention is provided preferably also includes being connected with the outlet of the anaerobic digester is reclaimed
Device.In the present invention, the phosphorus recovery device is the effluent unit of sewage disposal system.The present invention does not have to phosphorus recovery device
Special limitation, using phosphorus recovery device well known to those skilled in the art.The present invention is thrown preferably in phosphorus recovery device
Plus carry out phosphorus recovery containing magnesium solution.In the present invention, following reaction occurs in the phosphorus recovery device：Mg2++PO4 3-+NH4 ++
6H2O→MgNH4PO4·6H2O。
What the sewage disposal system that the present invention is provided preferably also included being connected with the outlet of the phosphorus recovery device second detests
Anaerobic ammonium oxidation reactor；The outlet of second anaerobic ammonia oxidation reactor and the entrance of first anaerobic ammonia oxidation reactor
Connection.In the present invention, second anaerobic ammonia oxidation reactor is used as sewage disposal system effluent unit.In the tool of the present invention
In body embodiment, the volume of second anaerobic ammonia oxidation reactor is 0.6m3.It is molten in the second anaerobic ammonia oxidation reactor
The concentration for solving oxygen is preferably 1.0~2.0mg/L.
The invention provides a kind of sewage treatment process, comprise the following steps：A) by sewage sequentially pass through Anaerobic Treatment and
Aerobic Process for Treatment, obtains muddy water mixed solution；Sludge age in the Anaerobic Treatment and Aerobic Process for Treatment is at 0.5~5 day, the anaerobism
Hydraulic detention time in reason and Aerobic Process for Treatment is 0.5~3h；B) the obtained muddy water mixed solutions of the step a) are precipitated,
Obtain the first supernatant and the first sludge；C) the first supernatant for obtaining the step b) carries out Anammox, obtains mud
Water mixed liquid；Muddy water mixed solution is separated, the second supernatant and the second sludge is obtained；D) obtain the step c)
Two supernatants and coagulant mixing, obtain reaction solution, reaction solution are precipitated, obtain the 3rd sludge and water outlet.The present invention is carried
The sewage treatment process of confession has higher denitrogenation dephosphorizing ability without additional carbon.Test result indicates that：Sewage is by this
Invent provide PROCESS FOR TREATMENT after, SS be 5~10mg/L, COD be 30~50mg/L, TN be 8~15mg/L, TP be 0.3~
0.5mg/L。
A kind of sewage treatment process provided to further illustrate the present invention with reference to embodiment the present invention and dirt
Water treatment system is described in detail, but they can not be interpreted as into limiting the scope of the present invention.
Embodiment 1
Sewage is taken to Renmin University of China living area, and processing water is designed as Q=4m3/ d, enters according to following steps
Row sewage disposal：
Step one：Sewage carries out preliminary treatment by grid sand setting, the larger suspended solid of particle diameter is removed, grizzly bar gap
For 16~25mm；
Step 2：Sewage after the processing of grid sand setting enters anaerobism in anaerobic-aerobic unit, anaerobic-aerobic unit and become reconciled
Oxygen unit volume ratio is 1:4；Sludge age in anaerobic-aerobic unit is 3d, and hydraulic detention time is 1.5h；The dissolving of anaerobic pond
Oxygen control is controlled in 2mg/L or so in below 0.2mg/L, the dissolved oxygen of Aerobic Pond；
Step 3：Mixed liquor in anaerobic-aerobic unit enters the first sedimentation basin and carries out mud-water separation, and supernatant, which enters, to be detested
Anaerobic ammonium oxidation reactor, and the activated sludge partial reflux after sedimentation concentration is left into the anaerobic pond in anaerobic-aerobic unit
Activated sludge to be discharged into the form of excess sludge in anaerobic sludge digestion pond；The return sludge ratio of first sedimentation basin is
80%；
Step 4：Hydraulic detention time in anaerobic sludge digestion pond is 20 days；The temperature control of anaerobic sludge digestion exists
53℃；Digestive juice, methane and sludge residue are produced after anaerobic sludge digestion；
Step 5：By the digestive juice by adding MgCl2Solution, regulation mol ratio Mg2+:PO4 3-For 3:1 is produced
Guanite, occurs following reaction：Mg2++PO4 3-+NH4 ++6H2O→MgNH4PO4·6H2O；
Step 6：Digestive juice after reclamation of phosphorus resource contains the ammonia nitrogen of high concentration, and this high ammonia-nitrogen wastewater is passed through into anaerobism ammonia
Oxidation bacteria is efficiently treated through；Anammox denitrification reaction includes：Formula (1) NH4 ++1.5O2→NO2 -+H2O+2H+With formula (2)
NO2 -+0.5O2→NO3 -；In 9th step, the dissolved oxygen in Anammox reaction member is controlled in 1.5mg/L.
Step 7：Carried out from the water outlet of the first sedimentation basin in Anaerobic ammonium oxidation system after efficient denitrification, pass through muddy water point
Anaerobic ammonium oxidation granular sludge is returned in Anaerobic ammonium oxidation system from device, it is ensured that sufficient microbial biomass, and it is isolated
The further synchronous reinforced phosphor-removing of chemistry of sewage, chemical floc uses aluminum sulfate solution, makes water quality index up to standard；
In 7th step, separator for mud and water is made up of aperture for 100~300 μm of filter cloth, and anaerobic ammonia oxidizing bacteria passes through filter
During cloth, efficiently it is trapped on filter cloth；
Step 8：Sewage after chemical synchronous reinforced phosphor-removing enters the second sedimentation basin and carries out mud-water separation, supernatant
It is discharged into extraneous water body；
In 8th step, due to the use of separator for mud and water, being only of excess sludge discharged in the second sedimentation basin
Learn chemical sludge a small amount of after dephosphorization；
In 8th step, TP ＜ 0.5mg/L, TN ＜ 15mg/L, SS ＜ 10mg/L, COD in the supernatant in the second sedimentation basin
During ＜ 50mg/L, it can just be discharged into natural water.
As shown in table 1, table 1 is the Inlet and outlet water water quality index of sewage to effluent quality index after sewage raw water matter and processing：
The Inlet and outlet water water quality index of the sewage of table 1
As can be seen from Table 1, by the sewage after the sewage treatment process processing of the invention provided, it is up to one-level A dirty
Water discharge standard.
Embodiment 2
Sewage is taken to Renmin University of China living area, and processing water is designed as Q=4m3/ d, enters according to following steps
Row sewage disposal：
Step one：Sewage carries out preliminary treatment by grid sand setting, the larger suspended solid of particle diameter is removed, grizzly bar gap
For 16~25mm；
Step 2：Sewage after the processing of grid sand setting enters anaerobism in anaerobic-aerobic unit, anaerobic-aerobic unit and become reconciled
Oxygen unit volume ratio is 1:3；Sludge age in anaerobic-aerobic unit is 0.5d, and hydraulic detention time is 3h；The dissolving of anaerobic pond
Oxygen control is controlled in 2mg/L or so in below 0.2mg/L, the dissolved oxygen of Aerobic Pond；
Step 3：Mixed liquor in anaerobic-aerobic unit enters the first sedimentation basin and carries out mud-water separation, and supernatant enters
Anaerobic ammonia oxidation reactor, and the activated sludge partial reflux after sedimentation concentration is remained into the anaerobic pond in anaerobic-aerobic unit
Under activated sludge to be discharged into the form of excess sludge in anaerobic sludge digestion pond；The return sludge ratio of first sedimentation basin is
50%；
Step 4：Hydraulic detention time in sewage anaerobic digestion pond is 25 days；The temperature control of anaerobic sludge digestion exists
50℃；Digestive juice, methane and sludge residue are produced after anaerobic sludge digestion；
Step 5：By the digestive juice by adding MgCl2Solution, regulation mol ratio Mg2+:PO4 3-For 3:1 is produced
Guanite, occurs following reaction：Mg2++PO4 3-+NH4 ++6H2O→MgNH4PO4·6H2O；
Step 6：Digestive juice after reclamation of phosphorus resource contains the ammonia nitrogen of high concentration, and this high ammonia-nitrogen wastewater is passed through into anaerobism ammonia
Oxidation bacteria is efficiently treated through；Anammox denitrification reaction includes：Formula (1) NH4 ++1.5O2→NO2 -+H2O+2H+With formula (2)
NO2 -+0.5O2→NO3 -；In 9th step, the dissolved oxygen in Anammox reaction member is controlled in 1.5mg/L.
Step 7：Carried out from the water outlet of the first sedimentation basin in Anaerobic ammonium oxidation system after efficient denitrification, pass through muddy water point
Anaerobic ammonium oxidation granular sludge is returned in Anaerobic ammonium oxidation system from device, it is ensured that sufficient microbial biomass, and it is isolated
The further synchronous reinforced phosphor-removing of chemistry of sewage, chemical floc uses aluminum sulfate solution, makes water quality index up to standard；
In 7th step, separator for mud and water is made up of aperture for 100~300um filter cloth, and anaerobic ammonia oxidizing bacteria passes through filter
During cloth, efficiently it is trapped on filter cloth；
Step 8：Sewage after chemical synchronous reinforced phosphor-removing enters the second sedimentation basin and carries out mud-water separation, supernatant
It is discharged into extraneous water body；
In 8th step, due to the use of separator for mud and water, being only of excess sludge discharged in the second sedimentation basin
Learn chemical sludge a small amount of after dephosphorization；
In 8th step, TP ＜ 0.5mg/L, TN ＜ 15mg/L, SS ＜ 10mg/L, COD in the supernatant in the second sedimentation basin
During ＜ 50mg/L, it can just be discharged into natural water.
As shown in table 2, table 2 is the Inlet and outlet water water quality index of sewage to effluent quality index after sewage raw water matter and processing：
The Inlet and outlet water water quality index of the sewage of table 2
As can be seen from Table 2, by the sewage after the sewage treatment process processing of the invention provided, it is up to one-level A dirty
Water discharge standard.
Embodiment 3
Sewage is taken to Renmin University of China living area, and processing water is designed as Q=4m3/ d, enters according to following steps
Row sewage disposal：
Step one：Sewage carries out preliminary treatment by grid sand setting, the larger suspended solid of particle diameter is removed, grizzly bar gap
For 16~25mm；
Step 2：Sewage after the processing of grid sand setting enters anaerobism in anaerobic-aerobic unit, anaerobic-aerobic unit and become reconciled
Oxygen unit volume ratio is 1:5；Sludge age in anaerobic-aerobic unit is 5d, and hydraulic detention time is 0.5h；The dissolving of anaerobic pond
Oxygen control is controlled in 2mg/L or so in below 0.2mg/L, the dissolved oxygen of Aerobic Pond；
Step 3：Mixed liquor in anaerobic-aerobic unit enters the first sedimentation basin and carries out mud-water separation, and supernatant, which enters, to be detested
Anaerobic ammonium oxidation reactor, and the activated sludge partial reflux after sedimentation concentration is left into the anaerobic pond in anaerobic-aerobic unit
Activated sludge to be discharged into the form of excess sludge in anaerobic sludge digestion pond；The return sludge ratio of first sedimentation basin is
100%；
Step 4：Hydraulic detention time in sewage anaerobic digestion pond is 30 days；The temperature control of anaerobic sludge digestion exists
55℃；Digestive juice, methane and sludge residue are produced after anaerobic sludge digestion；
Step 5：By the digestive juice by adding MgCl2Solution, regulation mol ratio Mg2+:PO4 3-For 3:1 is produced
Guanite, occurs following reaction：Mg2++PO4 3-+NH4 ++6H2O→MgNH4PO4·6H2O；
Step 6：Digestive juice after reclamation of phosphorus resource contains the ammonia nitrogen of high concentration, and this high ammonia-nitrogen wastewater is passed through into anaerobism ammonia
Oxidation bacteria is efficiently treated through；Anammox denitrification reaction includes：Formula (1) NH4 ++1.5O2→NO2 -+H2O+2H+With formula (2)
NO2 -+0.5O2→NO3 -；In 9th step, the dissolved oxygen in Anammox reaction member is controlled in 1.5mg/L.
Step 7：Carried out from the water outlet of the first sedimentation basin in Anaerobic ammonium oxidation system after efficient denitrification, pass through muddy water point
Anaerobic ammonium oxidation granular sludge is returned in Anaerobic ammonium oxidation system from device, it is ensured that sufficient microbial biomass, and it is isolated
The further synchronous reinforced phosphor-removing of chemistry of sewage, chemical floc uses aluminum sulfate solution, makes water quality index up to standard；
In 7th step, separator for mud and water is made up of aperture for 100~300um filter cloth, and anaerobic ammonia oxidizing bacteria passes through filter
During cloth, efficiently it is trapped on filter cloth；
Step 8：Sewage after chemical synchronous reinforced phosphor-removing enters the second sedimentation basin and carries out mud-water separation, supernatant
It is discharged into extraneous water body；
In 8th step, due to the use of separator for mud and water, being only of excess sludge discharged in the second sedimentation basin
Learn chemical sludge a small amount of after dephosphorization；
In 8th step, TP ＜ 0.5mg/L, TN ＜ 15mg/L, SS ＜ 10mg/L, COD in the supernatant in the second sedimentation basin
During ＜ 50mg/L, it can just be discharged into natural water.
As shown in table 3, table 3 is the Inlet and outlet water water quality index of sewage to effluent quality index after sewage raw water matter and processing：
The Inlet and outlet water water quality index of the sewage of table 3
As can be seen from Table 3, by the sewage after the sewage treatment process processing of the invention provided, it is up to one-level A dirty
Water discharge standard.
As seen from the above embodiment, the invention provides a kind of sewage treatment process, comprise the following steps：A) by sewage according to
Secondary process Anaerobic Treatment and Aerobic Process for Treatment, obtain muddy water mixed solution；Sludge age in the Anaerobic Treatment and Aerobic Process for Treatment is 0.5
~5 days, the hydraulic detention time in the Anaerobic Treatment and Aerobic Process for Treatment was 0.5~3h；B) mud for obtaining the step a)
Water mixed liquid is precipitated, and obtains the first supernatant and the first sludge；C) the first supernatant for obtaining the step b) is carried out
Anammox, obtains muddy water mixed solution；Muddy water mixed solution is separated, the second supernatant and the second sludge is obtained；D) will
The second supernatant and the coagulant mixing that the step c) is obtained, obtain reaction solution, reaction solution are precipitated, obtain the 3rd dirty
Mud and water outlet.The sewage treatment process that the present invention is provided has higher denitrogenation dephosphorizing ability without additional carbon.Experiment knot
Fruit shows：Sewage is after the PROCESS FOR TREATMENT that provides of the present invention, and SS is 5~10mg/L, and COD is 30~50mg/L, and TN is 8~
15mg/L, TP are 0.3~0.5mg/L.
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (6)
1. a kind of sewage treatment process, comprises the following steps：
A) sewage is sequentially passed through into Anaerobic Treatment and Aerobic Process for Treatment, obtains muddy water mixed solution；
The COD of the sewage is 400~600mg/L, and TN contents are 60~80mg/L, and TP contents are 5~7mg/L；
Sludge age in the Anaerobic Treatment and Aerobic Process for Treatment is the waterpower in 0.5~5 day, the Anaerobic Treatment and Aerobic Process for Treatment
Residence time is 0.5~3h；The dissolved oxygen of the Anaerobic Treatment is 0~0.2mg/L, and the dissolved oxygen of the Aerobic Process for Treatment is 1.5
~2.5mg/L；
B) the obtained muddy water mixed solutions of the step a) are precipitated, obtains the first supernatant and the first sludge；
C) the first supernatant for obtaining the step b) carries out Anammox, obtains muddy water mixed solution；The muddy water is mixed
Close liquid to be separated, obtain the second supernatant and the second sludge；The dissolved oxygen of the Anammox is 1~2mg/L；
D) the second obtained supernatants of the step c) and coagulant are mixed, obtains reaction solution, the reaction solution is sunk
Form sediment, obtain the 3rd sludge and water outlet.
2. sewage treatment process according to claim 1, it is characterised in that the anaerobic ammonium oxidation sludge in the step c)
Without spoil disposal.
3. sewage treatment process according to claim 1, it is characterised in that also include：A part of step b) is obtained
The first sludge reflux, participate in Anaerobic Treatment；
The first sludge that step b) described in another part is obtained carries out anaerobic sludge digestion, obtains digestive juice, methane and sludge residual
Slag.
4. sewage treatment process according to claim 3, it is characterised in that during the hydraulic retention of the anaerobic sludge digestion
Between be 20~30 days.
5. sewage treatment process according to claim 3, it is characterised in that the temperature of the anaerobic sludge digestion is 50 DEG C
~55 DEG C.
6. sewage treatment process according to claim 3, it is characterised in that the digestive juice is carried out successively phosphorus reclaim and
Anammox processing.
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| CN105366889B (en) * | 2015-11-26 | 2018-02-06 | 中国市政工程华北设计研究总院有限公司 | A kind of town sewage high standard denitrification dephosphorization system without additional carbon |
| CN111484136B (en) * | 2020-05-18 | 2021-12-07 | 北京工业大学 | Energy-saving sewage treatment system and process with high effluent standard |
| CN112158948A (en) * | 2020-10-26 | 2021-01-01 | 中国市政工程西南设计研究总院有限公司 | High-concentration activated sludge treatment method and system based on filter cloth sludge pre-separation |
| CN114560595A (en) * | 2022-03-01 | 2022-05-31 | 北京坦思环保科技有限公司 | Treatment method and treatment system for kitchen waste biogas slurry |
| CN115385520B (en) * | 2022-08-01 | 2023-08-25 | 佛山市南海区苏科大环境研究院 | Urban sewage treatment method for efficiently recycling ammonia |
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| CN103112999B (en) * | 2013-02-25 | 2014-04-30 | 北京工业大学 | Regeneration method for urban sewage by continuous flow |
| CN103288211B (en) * | 2013-05-12 | 2014-09-24 | 北京工业大学 | Device and method for treating low-C/N (carbon/nitrogen) ratio urban sewage by an anoxic/aerobic SBR-DEAMOX (denitrifying ammonium oxidation) denitrification process |
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