CN207259330U - A kind of anaerobic digestion of kitchen wastes wastewater treatment equipment - Google Patents
A kind of anaerobic digestion of kitchen wastes wastewater treatment equipment Download PDFInfo
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- CN207259330U CN207259330U CN201721001272.9U CN201721001272U CN207259330U CN 207259330 U CN207259330 U CN 207259330U CN 201721001272 U CN201721001272 U CN 201721001272U CN 207259330 U CN207259330 U CN 207259330U
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Abstract
A kind of anaerobic digestion of kitchen wastes wastewater treatment equipment, is related to the dewatered wastewater treatment equipment of kitchen garbage slurry anaerobic digestion.Waste water is successively through oil removal primary sedimentation tank (1), regulating reservoir (2), the first pH regulating reservoirs (3), Ammonia blowing-out tower (4), the 2nd pH regulating reservoirs (5), A/O biochemical treatment apparatus (6), sedimentation basin (7), air-floating apparatus (8), Fenton reactor (9), coagulative precipitation tank (10), biological aerated filter (11) processing, COD, BOD in effectively removal waste water is met5, the pollutant such as SS while, can effectively remove TN, TP and effectively reduce chroma in waste water, and improve the removal rate of TN, TP, COD, BOD in the waste water after processing5、NH3N, the pollutant such as TP, colourity can stably reach《Integrated wastewater discharge standard》(GB8978 1996) " primary standard " requirement, and TN is less than 70mg/L.
Description
Technical field
The utility model belongs to a kind of kitchen garbage slurry anaerobic digestion wastewater treatment equipment, and in particular to a kind of kitchen rubbish
The dewatered waste water of rubbish slurry anaerobic digestion, and the processing unit that kitchen garbage processing other process is wastewater produced, belong to dirty
Water treatment field.
Background technology
The dewatered waste water of kitchen garbage slurry anaerobic digestion, and the waste water that kitchen garbage processing other process produces,
Waste component is complicated, belongs to the big high concentrated organic wastewater of intractability.Pollutants in Wastewater concentration is high, COD (COD,
8000~20000mg/L), BOD5(4000~8000mg/L), total nitrogen (TN, 2000~3000mg/L), ammonia nitrogen (NH3- N, 1500
~2500mg/L), total phosphorus (TP, 50~150mg/L), suspended matter (SS,>8000mg/L), salt content (15000~30000mg/
L), vegetable and animals oils (800~1500mg/L), colourity (300~800 times).Cellulose, protein, lipid in waste water etc. are difficult raw
Thing degradation of organic substances matter institute accounting is big, its carbon-nitrogen ratio (BOD5:TKN it is) low, it is only 2:1~3:1, the carbon-nitrogen ratio of waste water is low to be unfavorable for
Effective removal of total nitrogen.
Kitchen waste water processing is at present mainly using at anaerobic bio-treated, Aerobic biological process, advanced oxidation and membrane technology
The processing unit of several or a variety of unit combinations such as reason.Waste water should reach after processing《Integrated wastewater discharge standard (GB8978-
1996)》In " grade III Standard " and《Sewage is discharged into town sewer water standard》GB/T 31962-2015) in " B grades " standard,
Some areas also need to reach more stringent《Integrated wastewater discharge standard》(GB8978-1996) " primary standard ", and to total nitrogen
Discharge value requires.
The document of publication number CN106396282A discloses a kind of " kitchen garbage slurry anaerobic fermentation wastewater treatment equipment ",
The device includes oil removal primary sedimentation tank, regulating reservoir, the first pH regulating reservoirs, Ammonia blowing-out tower, the 2nd pH regulating reservoirs, A/O biochemical treatments dress
Put, sedimentation basin, Fenton reactor, coagulative precipitation tank.Waste water is successively blown through oil removal primary sedimentation tank regulating reservoir, the first pH regulating reservoirs, ammonia
De- tower, the 2nd pH regulating reservoirs, A/O biochemical treatment apparatus, sedimentation basin, Fenton reactor, coagulative precipitation tank are handled, and are being removed
COD, BOD in waste water5, the pollutant such as SS while, can effectively remove TN, TP and effectively reduce chroma in waste water, and improve TN, TP
Removal rate, COD, BOD in the waste water after processing5、TN、NH3The pollutants such as-N, TP, colourity can stably reach《Integrated wastewater is arranged
Put standard》(GB8978-1996) " grade III Standard " and《Sewage is discharged into town sewer water standard》(GB/T 31962-2015)
" B grades " requirements, have better effects, but be unsatisfactory for《Integrated wastewater discharge standard》(GB8978-1996) " primary standard " will
Ask.
There is one kind in the prior art by " pretreatment unit+anaerobic processing device+aerobic treatment device+reverse osmosis membrane mistake
The processing unit that filter device " is formed by combining, its deficiency is, first, Anaerobic Treatment unit operational management requirement is high, especially to detest
Oxygen processing unit consumes the carbon source in waste water in the process of running, carbon-nitrogen ratio in waste water is further declined (COD, BOD5Reduce,
Ammonia nitrogen raises), the reduction of carbon-nitrogen ratio is less useful for the biological denitrificaion of waste water；Second, depth of the reverse osmosis membrane filtration device as end
Degree processing, although can meet《Sewage is discharged into town sewer water standard》The requirement of " B grades " standard and《Integrated wastewater is arranged
Put standard》(GB8978-1996) requirement of " primary standard ", its deficiency are that the grease in waste water easily leads to reverse osmosis membrane blocking,
High salt branch in waste water accelerates the aging of reverse osmosis membrane, and reverse osmosis membrane service life is short, especially reverse osmosis membrane filtration device
It is a kind of physical filtering device, is simply retained the pollutant in waste water, pollutant is not degraded really, it is produced
A large amount of concentrates need to separately carry out the processing of complex process, be easy to cause secondary pollution, and operating cost is higher.
The content of the invention
In view of the deficiencies of the prior art, the utility model provides a kind of anaerobic digestion of kitchen wastes wastewater treatment equipment, i.e.,
The dewatered waste water of kitchen garbage slurry anaerobic digestion and kitchen garbage processing procedure other processes it is wastewater produced processing dress
Put, the present apparatus can effectively remove TN, NH while the pollutant such as COD, BOD, SS in meeting effectively removal waste water3- N, TP and
Chroma in waste water is effectively reduced, and improves TN, NH3The removal rate of-N, TP, COD, BOD in the waste water after processing5、NH3- N, TP, color
The pollutants such as degree can stably reach《Integrated wastewater discharge standard》(GB8978-1996) requirement of " primary standard ", and TN can
Less than 70mg/L.
The technical solution of the utility model is as follows：
Referring to attached drawing, including oil removal primary sedimentation tank 1, regulating reservoir 2, the first pH regulating reservoirs 3, Ammonia blowing-out tower 4, the 2nd pH regulating reservoirs
5th, A/O biochemical treatment apparatus 6, sedimentation basin 7, air-floating apparatus 8, Fenton reactor 9, coagulative precipitation tank 10, biological aerated filter 11；
Oil slick baffle 1a is arranged at 1 top of oil removal primary sedimentation tank, and mud chamber 1b is arranged at lower part, and sludge is arranged at the mud chamber 1b bottoms
Outlet, the wastewater outlet of oil removal primary sedimentation tank 1 are communicated with the regulating reservoir 2；The oil removal primary sedimentation tank carries out waste water oil removal, just sinks
Processing, removes most suspended substances SS；
The water outlet of the regulating reservoir 2 is communicated with the first pH regulating reservoirs 3；Regulating reservoir 2 carries out waste water water, water quality
Adjust；
There is the first rabbling mechanism 3a in the first pH regulating reservoirs 3,3 inner cavity of the first pH regulating reservoirs simultaneously adds component phase with alkali
It is logical；First pH regulating reservoirs 3 carry out first time adjusting to the pH value of waste water, make the form of ammonia nitrogen in waste water by NH4 +It is converted into free
Ammonia (NH3), provide advantage effectively to remove ammonia nitrogen in follow-up Ammonia blowing-out tower processing procedure；
Offgas outlet 4a is arranged at 4 top of Ammonia blowing-out tower, and air intlet 4b is arranged at lower part, and 4 inner cavity top of Ammonia blowing-out tower, which has, matches somebody with somebody
Water component 4c, the waste water inlet of water distribution component 4c are communicated with the first pH regulating reservoirs 3, the wastewater outlet of the Ammonia blowing-out tower 4
Communicated with the 2nd pH regulating reservoirs 5；Waste water is handled through Ammonia blowing-out tower, realizes stripping and the removal of free ammonia, makes the carbon nitrogen in waste water
Than (BOD5:TKN) improve, suitable carbon-nitrogen ratio condition is provided for the biological denitrificaion of follow-up A/O biochemical treatment apparatus；
There is the second rabbling mechanism 5a in the 2nd pH regulating reservoirs 5,5 inner cavity of the 2nd pH regulating reservoirs simultaneously adds component with sulfuric acid
Communicate；2nd pH regulating reservoirs carry out second to the pH value of waste water and adjust, and form the suitable growing environment of microorganism, are follow-up A/
The biochemical treatment of O biochemical treatment apparatus provides necessary environment；
The A/O biochemical treatment apparatus 6 includes anoxic zone 6a and aerobic zone 6b, the anoxic zone 6a and aerobic zone 6b tops
Communicate, the 2nd pH regulating reservoirs 5 are communicated with the anoxic zone 6a of A/O biochemical treatment apparatus 6, A/O biochemical treatment apparatus 6 it is aerobic
Area 6b is communicated with the sedimentation basin 7；A/O biochemical treatment apparatus 6 to waste water carry out biochemical treatment, effectively remove most COD,
BOD5, further remove NH3- N, TN, effectively go dephosphorization；
7 lower part of sedimentation basin has storage mud chamber 7a, storage mud chamber 7a bottoms to have sludge outlet；Waste water is precipitated through sedimentation basin 7
Processing, further removes SS and TP；
The air-floating apparatus 8 is provided with skimming mechanism 8a, scum trough 8b, dissolved gas agency 8c, the air-floating apparatus 8 with it is described
The water outlet on 7 top of sedimentation basin communicates, and 8 inner cavity of air-floating apparatus is communicated with coagulant dosage component, the water outlet of 8 lower part of air-floating apparatus
Mouth is communicated with the Fenton reactor 9；In operation, from coagulant dosage component into air-floating apparatus dosing coagulant, and with it is useless
Water carries out coagulation, and dissolved gas agency 8c discharges pressure air-dissolving water into waste water, makes to produce substantial amounts of micro air bubble in waste water, fine gas
Bubble is attached on the suspended particle in waste water, suspended matter is kept afloat using buoyancy, so as to fulfill solid- liquid separation, is removed
Suspended matter, colloid pollutant in waste water, further remove the pollutants such as COD, TP, colourity；The scum silica frost kept afloat passes through
Skimming mechanism 8a is skimmed in scum trough 8b, and scum silica frost is discharged into the mud storage pool 12 separately set；
Gas Stirring component 9a is equipped with the Fenton reactor 9,9 inner cavity of Fenton reactor adds component and sweet smell with sulfuric acid
The reagent that pauses adds component and communicates；Waste water is contacted in the Fenton reactor 9 under acid pH environment with Fenton reagent
Reaction, waste water are handled through Fenton reactor, further reduce COD, BOD in waste water5, meanwhile, the coloured groups quilt in waste water
Destroy, the colourity that waste water is effectively reduced for follow-up coagulative precipitation tank creates conditions；
The coagulative precipitation tank 10 includes coagulation area 10a and settling zone 10b, coagulation area 10a and settling zone 10b tops phase
It is logical, the 3rd rabbling mechanism 10c is equipped with the coagulation area 10a, sludge bucket 10d, sludge bucket 10d bottoms are arranged at settling zone 10b lower parts
There is mud mouth, coagulation area 10a adds component with alkali and communicates, wastewater outlet and the coagulative precipitation tank 10 of the Fenton reactor 9
Coagulation area 10a is communicated, and the settling zone 10b tops water outlet of coagulative precipitation tank 10 is communicated with 11 top of biological aerated filter；
In operation, component is added from alkali alkali is added into coagulation area, and mixed with waste water, pH value of waste water is adjusted to neutrality, given up
Water occurs coagulating in the coagulation area 10a of coagulative precipitation tank, forms hydroxide not soluble in water under pH neutral environment
Iron, ferric phosphate flco, remove iron ion and TP in waste water, meanwhile, further remove COD, SS in waste water, colourity and other
Pollutant, the waste water after coagulation area 10a processing enters settling zone 10b, realizes separation of solid and liquid, upper in settling zone 10b
Clear liquid enters biological aerated filter 11, and sludge is discharged into the mud storage pool in addition set by the mud mouth of its bottom in sludge bucket 10d
12；
11 intracavity bottom of biological aerated filter is equipped with aeration component 11a, and there are biological filter bed of material 11b, aeration life in middle part
Water outlet is arranged at 11 lower part of thing filter tank；Biological aerated filter 11 carries out biology to waste water and physical treatment, waste water are filled with microbial film
Tap is touched, and the organic matter in degrading waste water simultaneously carries out nitration denitrification denitrogenation, is carried out at the same time the filtering and absorption of filtrate, further
Eliminate COD, BOD in waste water5、TN、NH3-N、SS；Discharged wastewater met the national standard after the processing of biological aerated filter 11.
The utility model has the characteristics that and technique effect：
1st, a kind of new processing unit is combined as using " the first pH regulating reservoirs+Ammonia blowing-out tower " in the utility model,
First time adjusting is carried out to the pH value of waste water in one pH regulating reservoirs, makes the form of ammonia nitrogen in waste water from NH4 +It is converted into free ammonia
(NH3), the free ammonia effectively removed in waste water for follow-up Ammonia blowing-out tower processing procedure provides favourable technical conditions, is blown in ammonia
Passing through liquid in de- tower processing --- gas mass transport process, inverted free ammonia then switch to gas phase by liquid phase and become ammonia-containing exhaust simultaneously
Discharge, removes the effective of the water part free ammonia that gives up so as to fulfill Ammonia blowing-out tower, and TN, NH are effectively removed to realize3- N and carry
High TN, NH3The purpose of-N removal rates establishes good basis.
2nd, it is in the utility model that described " the two pH regulating reservoir+A/O biochemical treatment apparatus of Ammonia blowing-out tower+the " composition is another
The processing unit of innovation, since the processing of the Ammonia blowing-out tower is effectively removed the free ammonia in waste water, effectively improves useless
Carbon-nitrogen ratio in water, provides suitable carbon-nitrogen ratio condition, after ammonia aeration processing for the biological denitrificaion of follow-up A/O biochemical treatment apparatus
Waste water enter and second is carried out to the pH value of waste water in the 2nd pH regulating reservoirs adjust, and form the suitable growth ring of microorganism
Border；
It is right since the processing of Ammonia blowing-out tower provides suitable carbon-nitrogen ratio condition for the biological denitrificaion of A/O biochemical treatment apparatus
The pH value of waste water carries out second and adjusts and form the suitable growing environment of microorganism, in A/O biochemical treatment apparatus to waste water
During carrying out biochemical treatment, the microorganism in the aerobic zone of A/O biochemical treatment apparatus in activated sludge can be effectively performed
Metabolism, by COD, BOD in waste water5Degraded, while the ammonium oxidation in waste water is nitric acid by the nitrifier in activated sludge
Salt nitrogen and cultured water, effectively increase the carbon-nitrogen ratio in waste water due to ammonia aeration processing procedure, and the carbon source in waste water is enriched, A/
Denitrifying bacterium consumption carbon source COD, BOD in waste water is removed in O biochemical treatment apparatus anoxic zone5While, by nitrate nitrogen
Nitrogen is converted into cultured water, by nitrification-denitrification reaction, realizes effective denitrogenation；Meanwhile the poly- phosphorus in activated sludge
Bacterium (microorganism) absorbs phosphorus in metabolic processes, forms Quadrafos and is stored in the polyP bacteria (microorganism) in vivo,
Effectively remove the phosphorus in waste water.
3rd, the follow-up " sedimentation basin+air-floating apparatus+Fenton reactor+coagulative precipitation tank+aeration and biological filter of the utility model
Pond " and the combination of aforementioned processing unit constitute overall new departure that the utility model handles waste water, in aforementioned processing
On the basis of unit obtains corresponding effective treatment effect, in the sedimentation basin processing of sedimentation basin, further eliminate in waste water
SS；Colloid pollutant, COD, SS, TP are further eliminated in air-floating apparatus, waste water is after air-floating apparatus is handled, in water
COD pollutants, particularly macromolecular Recalcitrant chemicals obtain part removal, can reduce in follow-up Fenton reactor Fenton and try
The dosage of agent, saves the cost of Fenton reagent；Fenton reactor reduce further COD, BOD in waste water5, in waste water
Coloured groups are destroyed, and the colourity that waste water is effectively reduced for follow-up coagulative precipitation tank creates conditions；In coagulative precipitation tank processing,
Fenton's reaction water outlet pH is adjusted to neutrality, further removes COD, SS, colourity and other pollutants in waste water；In aeration and biological
In the biology and physical treatment step in filter tank, COD, BOD are further removed5、TN、NH3- N, while the SS remained in waste water is removed,
Make COD, BOD in the waste water after the utility model is handled5、NH3The pollutants such as-N, TP, colourity can stably reach《Sewage is comprehensive
Close discharge standard》(GB8978-1996) requirement of " primary standard ", and TN is smaller than 70mg/L.
4th, the utility model " on the basis of the technical solution of publication number CN106396282A ", is increasing in Fenton reactor front end
If " air-floating apparatus ", " coagulative precipitation tank ", " biological aerated filter " are additionally arranged successively in Fenton reactor rear end, that is, form this
The processing unit at the rear portion " air-floating apparatus+Fenton reactor+coagulative precipitation tank+biological aerated filter " of utility model scheme, makes
Obtain COD, BOD in the waste water after the utility model is handled5、NH3The pollutants such as-N, TP, colourity can stably reach《Sewage is comprehensive
Close discharge standard》(GB8978-1996) requirement of " primary standard ", and the part added can use prior art construction,
It is stable, easy to safeguard, operating cost can be reduced, relative to existing " pretreatment+anaerobism+aerobic+advanced treating (reverse osmosis
Permeable membrane filters) " combination unit, avoid the combination unit because using Anaerobic Treatment and membrane technology and existing for deficiency.
The utility model is further illustrated with reference to embodiment.
Brief description of the drawings
Attached drawing is the structure diagram of the utility model.
Embodiment
Referring to attached drawing, using treatment scale as 100m3Exemplified by the kitchen garbage, waste-water of/d, embodiment is as follows：
The waste water quality that the dewatered waste water of kitchen garbage slurry anaerobic digestion and kitchen garbage processing other process produce：
COD：12000~15000mg/L, BOD5：4500~5000mg/L, TN：2100~2400mg/L, NH3-N：1800~2000mg/
L, TP：110~130mg/L, SS：7000~10000mg/L, vegetable and animals oils：800~1000mg/L, pH：7.5~8, colourity：
800~1000 times.
Referring to attached drawing, the utility model includes oil removal primary sedimentation tank 1, regulating reservoir 2, the first pH regulating reservoirs 3, Ammonia blowing-out tower 4, the
Two pH regulating reservoirs 5, A/O biochemical treatment apparatus 6, sedimentation basin 7, air-floating apparatus 8, Fenton reactor 9, coagulative precipitation tank 10, aeration
Biofilter 11；
Oil slick baffle 1a is arranged at 1 top of oil removal primary sedimentation tank, and mud chamber 1b is arranged at lower part, and sludge outlet is arranged at mud chamber bottom
1c, waste water enter oil removal primary sedimentation tank by waste pipe, and oil removal primary sedimentation tank carries out waste water oil removal, just heavy processing, removes most of outstanding
Float SS, the wastewater outlet of oil removal primary sedimentation tank 1 are communicated with regulating reservoir 2；In operation, the oil slick baffle exclude float in freedom it is useless
The oil slick of layer waterborne, the oil slick of retention are periodically removed using corresponding device, and the large granular impurity and bulky grain in waste water suspend
Thing is deposited in the mud chamber of oil removal primary sedimentation tank lower part under gravity, the sludge of precipitation by mud chamber 1b bottoms sludge
1c discharges are exported, realize the removal of most suspended substances SS；In specific implementation, in addition the sludge entrance discharged by mud chamber 1b is set
In the mud storage pool 12 put；The wastewater outlet of the oil removal primary sedimentation tank 1 is connected with regulating reservoir 2 by pipe fitting or pocket member.
Water, the water quality of waste water is adjusted in the regulating reservoir 2, in favor of the stable operation of subsequent treatment process, adjusts
The water outlet in section pond 2 is communicated with the first pH regulating reservoirs 3；
The oil removal primary sedimentation tank and regulating reservoir can use armored concrete pond body or carbon steel anticorrosion equipment pond body, this example
Oil removal primary sedimentation tank size：5m × 2m × 3m (depth), regulating reservoir dischargeable capacity 100m3.After oil removal primary sedimentation tank and regulating reservoir processing,
SS ＜ 2000mg/L, vegetable and animals oils the ＜ 300mg/L of waste water.
There is the first rabbling mechanism 3a in the first pH regulating reservoirs 3,3 inner cavity of the first pH regulating reservoirs simultaneously adds component phase with alkali
Logical, the first pH regulating reservoirs 3 carry out first time adjusting to the pH value of waste water, and the pH value of waste water is adjusted to 10.5~12, in the pH
Under value, make the form of ammonia nitrogen in waste water by NH4 +It is converted into free ammonia (NH3), it is effectively to be gone in follow-up Ammonia blowing-out tower processing procedure
Except ammonia nitrogen provides advantage；In operation, alkali is added into pond and is stirred, realize the first time tune to pH value of waste water
Section, alkali can use sodium hydroxide, calcium oxide, calcium hydroxide etc.；The alkali that this example adds is sodium hydroxide, 3 ruler of the first pH regulating reservoirs
Very little is 1.5m × 1.5m × 1.5m (depth), and configuration pH value detector automatically controls the dosage of aqueous slkali with controller.
Offgas outlet 4a is arranged at 4 top of Ammonia blowing-out tower, and air intlet 4b is arranged at lower part, and 4 inner cavity top of Ammonia blowing-out tower, which has, matches somebody with somebody
Water component 4c, the waste water inlet of water distribution component 4c are communicated with the first pH regulating reservoirs 3, and waste water is handled through Ammonia blowing-out tower, are realized free
The stripping of ammonia and removal, make the carbon-nitrogen ratio (BOD in waste water5:TKN) improve to 4:1~6:1, it is follow-up A/O biochemical treatment apparatus
Biological denitrificaion suitable carbon-nitrogen ratio condition is provided, the wastewater outlet of Ammonia blowing-out tower 4 is communicated with the 2nd pH regulating reservoirs 5；The ammonia
Packing layer 4f is equipped with the middle part of 4 inner cavity of stripping tower, waste water is showered on filler by top through water distribution component 4c water distributions and forms drops
State falls along filler.In operation, the waste water after the processing of the first pH regulating reservoirs enters the water distribution component 4c of Ammonia blowing-out tower internal upper part,
Through water distribution component water distribution, waste water lands from top to bottom into water droplet state, and air is entered by the air intlet 4b of Ammonia blowing-out tower bottom,
Gas liquid ratio is 2500~3500:1, and be blown up by the bottom of Ammonia blowing-out tower inner cavity, the air-flow of rising and giving up for even drop down
Water comes into full contact with, and passes through liquid --- gas mass transport process, free ammonia then by liquid phase switch to gas phase and as ammonia-containing exhaust and by tail gas
4a discharges are exported, since partially or mostly free ammonia by stripping and removes, so that carbon-nitrogen ratio (BOD in waste water5:TKN) carry
Up to 4:1~6:1, so that suitable carbon-nitrogen ratio condition is provided for follow-up biological denitrificaion, so that follow-up A/O biochemical treatments fill
The Nitrogen removal effect put, in this example：Gas liquid ratio is 3000:1, carbon-nitrogen ratio is improved to 5 in waste water:1~6:1, ammonia nitrogen removal frank
Up to more than 60%, the ammonia nitrogen ＜ 800mg/L in the waste water after ammonia aeration is handled；The first pH regulating reservoirs 3 and the water distribution
Waste water inlet on component 4c sets delivery pump 4e by conveying pipe fitting 4d connections, conveying pipe fitting 4d；The Ammonia blowing-out tower 4 gives up
Water out is connected with the 2nd pH regulating reservoirs 5 by pipe fitting or other components.In specific implementation, contain ammonia by what offgas outlet 4a was discharged
Respective handling device can be used in tail gas --- tail gas absorber otherwise processed.
There is the second rabbling mechanism 5a in the 2nd pH regulating reservoirs 5,5 inner cavity of the 2nd pH regulating reservoirs simultaneously adds component with sulfuric acid
Communicate, the 2nd pH regulating reservoirs carry out second to the pH value of waste water and adjust, and pH value of waste water is adjusted to 7.0~8.5, forms micro- life
The suitable growing environment of thing, necessary environment is provided for the biochemical treatment of follow-up A/O biochemical treatment apparatus, the 2nd pH regulating reservoirs 5 with
Anoxic zone 6a in A/O biochemical treatment apparatus 6 is communicated；In operation, sulfuric acid (H is added into 5 pond of the 2nd pH regulating reservoirs2SO4) go forward side by side
Row is stirred, and realizes that carrying out second to the pH value of waste water is adjusted, it is molten that configuration pH value Detection ＆ Controling instrument automatically controls sulfuric acid
The dosage of liquid；In this example, the 2nd pH adjusts pool size：1.5m × 1.5m × 1.5m (depth).The waste water of the Ammonia blowing-out tower 4 goes out
Mouth is connected by pipe fitting or other components with the waste water inlet of the 2nd pH regulating reservoirs.The 2nd pH regulating reservoirs 5 by pump 5b and
Corresponding pipe fitting is communicated with the anoxic zone 6a in A/O biochemical treatment apparatus 6.
Include in the A/O biochemical treatment apparatus 6 on anoxic zone 6a and aerobic zone 6b, the anoxic zone 6a and aerobic zone 6b
Portion communicates, and the 2nd pH regulating reservoirs 5 are communicated with the anoxic zone 6a in A/O biochemical treatment apparatus 6, in A/O biochemical treatment apparatus 6
Aerobic zone 6b communicated with the sedimentation basin 7；A/O biochemical treatment apparatus 6 carries out waste water biochemical treatment, effectively removes most of
COD、BOD5, further remove NH3- N, TN, effectively go dephosphorization；In implementation, in the A/O biochemical treatment apparatus 6, equipped with general
Muddy water mixed solution reflux in the aerobic zone 6b is equipped with first time in the reflux pipe fitting 6c in the 6a of anoxic zone, reflux pipe fitting 6c
Muddy water mixed solution in stream pump 6d, aerobic zone 6b is flowed back in the anoxic zone 6a by backflow member 6c, is formed " interior reflux ", returned
For stream than being 200%~500%, the internal reflux ratio in this example is 300%~400%.In operation, A/O biochemical treatment apparatus 6 is aerobic
Metabolism can be effectively performed in microorganism in area 6b (dissolved oxygen is 1.5~2.5mg/L) interior activated sludge, and (activated sludge is dense
Spend MLSS, 3.5~4.5g/L), by COD, BOD in waste water5Degraded, effectively removes most COD, BOD5, while in activated sludge
Nitrobacteria by the ammonium oxidation in waste water be nitrate nitrogen and cultured water, due to the carbon-nitrogen ratio (BOD in waste water5:TKN)
Effectively improve in ammonia aeration processing procedure, the carbon source in waste water is enriched, 6 anoxic zone 6a of A/O biochemical treatment apparatus (dissolvings
Oxygen is 0.2~0.5mg/L) in denitrifying bacterium consumption carbon source COD, BOD in waste water is removed5While, by nitrate nitrogen and
Cultured water is converted into nitrogen, further removes NH3- N, TN, by nitrification-denitrification reaction, realize effective denitrogenation, meanwhile,
PolyP bacteria (microorganism) in activated sludge absorbs phosphorus in metabolic processes, forms Quadrafos and is stored in the poly- phosphorus
Bacterium (microorganism) in vivo, effectively removes the phosphorus (biological phosphate-eliminating) in waste water；Waste water is in the A/O biochemical treatment apparatus 6
Total hrt is 10~20 days, wherein anoxic zone 4~6 days, aerobic zone 6~15 days, in this example, total hrt
For 17 days, wherein anoxic zone 4 days, aerobic zone 13 days；In operation, the temperature of muddy water mixed solution in the A/O biochemical treatment apparatus 6
Control is at 20~35 DEG C, and control is at 25~35 DEG C in this example；In this example, the A/O biochemical treatment apparatus is existing anoxic-good
The anaerobic-aerobic activated sludge process treatment tank of oxygen activity sludge sewage-treatment plant or existing structure, by anoxic zone, good
The composition such as oxygen area and backflow member, valve, pipeline, rabbling mechanism, aeration mechanism, size is 20m × 20m × 5m (depth), is given birth to through A/O
Change water outlet COD the ＜ 700mg/L, BOD after processing unit processing5＜ 200mg/L, NH3- N ＜ 30mg/L, TN ＜ 80mg/L；Operation
In, when the temperature of muddy water mixed solution in the A/O biochemical treatment apparatus 6 is less than 20 DEG C, sets and fill the A/O biochemical treatments
The heating unit that muddy water mixed solution temperature in 6 rises to 20~35 DEG C is put, such as：Handed over using direct-fired electric heater or using heat
The heating units such as changing device, when muddy water mixed solution temperature is higher than 35 DEG C in the A/O biochemical treatment apparatus 6, are set by described in
Muddy water mixed solution temperature is down to 20~35 DEG C of cooling device in A/O biochemical treatment apparatus 6, such as uses cooler or cooling tower
Device.
7 lower part of sedimentation basin has storage mud chamber 7a, storage mud chamber 7a bottoms to have sludge outlet, and waste water is through sedimentation basin place of settling
Reason, further removes SS and TP in waste water, and the water outlet on 7 top of sedimentation basin is communicated with the waste water inlet of the air-floating apparatus 8；
In implementation, flow back equipped with the partial sludge mixture store 7 lower part of sedimentation basin in mud chamber 7a in A/O biochemical treatment apparatus
Return duct 7b in the 6a of anoxic zone, return duct 7b are equipped with the portion in the second reflux pump 7c, 7 lower part of the sedimentation basin storage mud chamber 7a
Dividing mud mixture reflux, reflux ratio is 50~100%, for maintaining A/O in the anoxic zone 6a in A/O biochemical treatment apparatus
The activated sludge concentration of biochemical treatment apparatus；In operation, waste water realizes mud-water separation in sedimentation basin 7, further remove SS,
TP；Waste water SS ＜ 100mg/L, TP ＜ 30mg/L after sedimentation basin is handled.In specific implementation, the residue in the storage mud chamber 7a
Sludge is discharged into the mud storage pool 12 in addition set.
The air-floating apparatus 8 is provided with skimming mechanism 8a, scum trough 8b, dissolved gas agency 8c, the air-floating apparatus 8 with it is described
The water outlet and coagulant dosage component on 7 top of sedimentation basin communicate, water outlet and the Fenton's reaction of 8 lower part of air-floating apparatus
Device 9 communicates；In operation, from coagulant dosage component into air-floating apparatus dosing coagulant, and with waste water carry out coagulation, molten mechanism of qi
Structure 8c discharges pressure air-dissolving water into waste water, makes to produce substantial amounts of micro air bubble in waste water, micro air bubble is attached in waste water
On suspended particle, suspended matter is kept afloat using buoyancy, so as to fulfill solid- liquid separation, remove suspended matter, the glue in waste water
Body pollutant, further removes the pollutants such as COD, TP, colourity；The scum silica frost kept afloat is skimmed into scum silica frost by skimming mechanism 8a
In groove 8b, scum silica frost is discharged into the mud storage pool 12 separately set, and the waste water after the air-floating apparatus 8 processing is arranged from the lower part of air-floating apparatus 8
Enter Fenton reactor 9.Coagulant can use molysite, aluminium salt or high polymer coagulant etc.；In this example, air-floating apparatus is existing structure
Flat flow dissolved gas floatator, trivalent iron salt work is added in the water inlet pipe of the air-floating apparatus 8 by pipe-line mixer component
For coagulant, waste water is 15min in the residence time of air-floating apparatus 8, the water outlet COD ＜ 300mg/ after the processing of air-floating apparatus 8
L, BOD550 times of ＜ 150mg/L, TP ＜ 6mg/L, SS ＜ 50mg/L, colourity ＜.
Gas Stirring component 9a is equipped with the Fenton reactor 9,9 inner cavity of Fenton reactor adds component and sweet smell with sulfuric acid
The reagent that pauses adds component and communicates；Waste water is contacted in the Fenton reactor 9 under acid pH environment with Fenton reagent
Reaction, further reduces COD, BOD in waste water5, the coloured groups in waste water are destroyed, are effectively dropped for follow-up coagulative precipitation tank
The colourity of low waste water creates conditions；In operation, component is added into the water inlet pipe of Fenton reactor 9 by sulfuric acid and adds sulfuric acid,
The pH value of waste water entered in Fenton reactor 9 is adjusted to acidity, is tried into the waste water in Fenton reactor 9 and the Fenton added
Agent carries out haptoreaction under acid ph value environment, and the organic pollutant of the difficult for biological degradation in waste water is in the strong of Fenton reagent
Aoxidized under oxidation, macromolecular is changed into small molecule, is easy to biochemical degradation, the biodegradability of waste water improves, while part has
Machine thing is inorganic matter by exhaustive oxidation, further reduces COD, BOD in waste water5, meanwhile, the coloured groups in waste water are broken
Bad, the colourity that waste water is effectively reduced for the processing of follow-up coagulative precipitation tank creates conditions；Fenton reactor is existing, and waste water is in sweet smell
Reaction time (hydraulic detention time) in reactor 9 for 1~2 it is small when, hydrogen peroxide and ferrous ion in Fenton reagent
Molar ratio is 1~3:1, the dosage of Fenton reagent is determined by the concentration of COD in water inlet.In this example：Fenton reactor size is
φ 2m × 3m, when reaction time (hydraulic detention time) of the waste water in Fenton reactor 9 is about 1.5 small, are mixed by pipeline
Device adds sulfuric acid, sets pH value Detection ＆ Controling instrument to automatically control dosage, the pH value of waste water is adjusted to 3~5, the sweet smell added
The molar ratio of hydrogen peroxide and ferrous ion is 1.5 in reagent:1.Water outlet COD ＜ after the processing of Fenton reactor 9
200mg/L, BOD5＜ 50mg/L.
The coagulative precipitation tank 10 includes coagulation area 10a and settling zone 10b, coagulation area 10a and settling zone 10b tops phase
Logical, the wastewater outlet of the Fenton reactor 9 is communicated with the coagulation area 10a of coagulative precipitation tank 10, the precipitation of coagulative precipitation tank 10
Area's 10b tops water outlet is communicated with 11 top of biological aerated filter, and the 3rd agitating member 10c is equipped with coagulation area 10a, is sunk
Sludge bucket 10d is arranged at shallow lake area 10b lower parts, and sludge bucket 10d bottoms have mud mouth 10e, coagulation area 10a to add component with alkali and communicate；It is useless
Water carries out coagulating sedimentation under pH neutral environment, removes iron ion and TP in waste water, further remove COD in waste water,
SS, colourity and other pollutants, and separation of solid and liquid is realized to waste water；In operation, added into the waste water for entering coagulation area 10a
Alkali, makes the pH value of waste water be adjusted to neutrality, and in coagulation area coagulation process occurs for the iron ion in waste water in neutral conditions, is formed
Iron hydroxide not soluble in water, ferric phosphate flco, remove iron ion and TP in waste water, while flocculation can be removed further
COD, SS, colourity and other pollutants in waste water；Waste water after coagulation area 10a processing enters the settling zone
10b, realizes separation of solid and liquid, and the supernatant in settling zone 10b enters biological aerated filter 11；Alkali can use sodium hydroxide, oxidation
Calcium, calcium hydroxide etc.；In this example, coagulative precipitation tank 10 is the coagulative precipitation tank of existing structure, is existed by pipe-line mixer component
The species that alkali is added in the water inlet pipe of the coagulation area 10a is NaOH, sets pH value Detection ＆ Controling instrument to automatically control aqueous slkali
Dosage, the pH value of waste water for entering coagulation area 10a is adjusted to 7~8 i.e. neutrality, in embodiment, waste water is in coagulative precipitation tank
The reaction time is 20min in 10 coagulation area 10a, is equipped with tube settling component in the settling zone 10b, waste water is in settling zone
The hydraulic surface loading of 10b is 1m3/m2.h.Water outlet after the processing of coagulative precipitation tank 10, COD ＜ 150mg/L, BOD5＜
40 times of 50mg/L, TP ＜ 0.5mg/L, SS ＜ 50mg/L, colourity ＜, are deposited in sludge in the sludge bucket 10d and are discharged into and in addition set
The mud storage pool 12 put.
11 intracavity bottom of biological aerated filter is equipped with aeration component 11a, and there are biological filter bed of material 11b, aeration life in middle part
Water outlet is arranged at 11 lower part of thing filter tank；Biological aerated filter 11 carries out biology to waste water and physical treatment, waste water are filled with microbial film
Tap is touched, and the organic matter in degrading waste water simultaneously carries out nitration denitrification denitrogenation, is carried out at the same time the filtering and absorption of filtrate, further
Eliminate COD, BOD in waste water5、TN、NH3-N、SS；The filtrate of biological filter bed of material 11b can use ceramic grain filter, seed activity
Charcoal filtrate or other similar filtrates；In operation, aeration component provides air by compressed air source unit and is aerated；In this example, aeration life
Thing filter tank is the biological aerated filter of existing structure, water-soluble using ceramic grain filter, 3~4m/h of filtering velocity, going out for biological aerated filter
Solution oxygen is not higher than 5mg/L, and biological aerated filter is periodically backwashed using its water outlet.Going out after biological aerated filter is handled
Water, COD ＜ 100mg/L, BOD5＜ 20mg/L, TP ＜ 0.5mg/L, TN ＜ 70mg/L, NH3- N ＜ 10mg/L, vegetable and animals oils ＜
40 times of 10mg/L, SS ＜ 40mg/L, colourity ＜.
Discharged wastewater met the national standard after the processing of biological aerated filter 11；When needing, sterilization pool is set, the sterilization pool
Water inlet is communicated with the water outlet of 11 lower part of biological aerated filter, described in the waste water entrance after the processing of biological aerated filter 11
Sterilization pool discharges after disinfecting；The present embodiment sets sterilization pool, disappears described in the waste water entrance after the processing of biological aerated filter 11
Discharged after malicious pond disinfection, disinfectant can use chlorine dioxide, ozone, bleaching powder etc., and embodiment is using chlorine dioxide as disinfection
Agent.
In specific implementation, separately disposed after device for dehydrating sladge waste processing of the sludge through in addition setting in mud storage pool 12；It is dirty
Mud dehydration equipment can use centrifugal dehydrator or belt type dewaterer etc., dewatered sludge outward transport.
For the kitchen waste water after the processing of the utility model device, pollutant concentration value and pollutants removal rate are as follows：
Go out water pollutant index to reach《Integrated wastewater discharge standard (GB8978-1996)》In " primary standard ", and
TN is less than 70mg/L.
Claims (6)
1. a kind of anaerobic digestion of kitchen wastes wastewater treatment equipment, it is characterized in that：
Including oil removal primary sedimentation tank (1), regulating reservoir (2), the first pH regulating reservoirs (3), Ammonia blowing-out tower (4), the 2nd pH regulating reservoirs (5),
A/O biochemical treatment apparatus (6), sedimentation basin (7), air-floating apparatus (8), Fenton reactor (9), coagulative precipitation tank (10), aeration life
Thing filter tank (11)；
Oil slick baffle (1a) is arranged at oil removal primary sedimentation tank (1) top, and mud chamber (1b) is arranged at lower part, and mud chamber (1b) bottom has
Sludge outlet, the wastewater outlet of oil removal primary sedimentation tank (1) are communicated with the regulating reservoir (2)；
The water outlet of the regulating reservoir (2) is communicated with the first pH regulating reservoirs (3)；
There is the first rabbling mechanism (3a) in the first pH regulating reservoirs (3), the first pH regulating reservoirs (3) inner cavity simultaneously adds component with alkali
Communicate；
Offgas outlet (4a) is arranged at Ammonia blowing-out tower (4) top, and air intlet (4b), Ammonia blowing-out tower (4) inner cavity top are arranged at lower part
There is water distribution component (4c), the waste water inlet of water distribution component (4c) is communicated with the first pH regulating reservoirs (3), the Ammonia blowing-out tower
(4) wastewater outlet is communicated with the 2nd pH regulating reservoirs (5)；
There is the second rabbling mechanism (5a) in the 2nd pH regulating reservoirs (5), the 2nd pH regulating reservoirs (5) inner cavity simultaneously adds structure with sulfuric acid
Part communicates；
Include anoxic zone (6a) and aerobic zone (6b) in the A/O biochemical treatment apparatus (6), anoxic zone (6a) and aerobic zone (6b)
Top communicates, and the 2nd pH regulating reservoirs (5) communicate with the anoxic zone (6a) in A/O biochemical treatment apparatus (6), at A/O biochemistry
Aerobic zone (6b) in reason device (6) is communicated with the sedimentation basin (7)；
Storage mud chamber (7a) is arranged at sedimentation basin (7) lower part, and sludge outlet is arranged at storage mud chamber (7a) bottom；
The air-floating apparatus (8) is provided with skimming mechanism (8a), scum trough (8b), dissolved gas agency (8c), the air-floating apparatus (8)
Communicated with the water outlet on the sedimentation basin (7) top, air-floating apparatus (8) inner cavity is communicated with coagulant dosage component, air-floating apparatus
(8) water outlet of lower part is communicated with the Fenton reactor (9)；
Be equipped with Gas Stirring component (9a) in the Fenton reactor (9), Fenton reactor (9) inner cavity and sulfuric acid add component and
Fenton reagent adds component and communicates；
The coagulative precipitation tank (10) includes coagulation area (10a) and settling zone (10b), on coagulation area (10a) and settling zone (10b)
Portion communicates, and the 3rd rabbling mechanism (10c) is equipped with the coagulation area (10a), and sludge bucket (10d) is arranged at settling zone (10b) lower part, dirty
Mud mouth is arranged at bucket (10d) bottom, and coagulation area (10a) adds component with alkali and communicate, the wastewater outlet of the Fenton reactor (9)
Communicated with the coagulation area (10a) of coagulative precipitation tank (10), settling zone (10b) the top water outlet of coagulative precipitation tank (10) with it is described
Biological aerated filter (11) top communicates；
Biological aerated filter (11) intracavity bottom is equipped with aeration component (11a), and there is the biological filter bed of material (11b) at middle part, is aerated
Water outlet is arranged at biofilter (11) lower part.
2. a kind of anaerobic digestion of kitchen wastes wastewater treatment equipment described in accordance with the claim 1, it is characterized in that：Disinfection is set
Pond, the water inlet of the sterilization pool are communicated with the water outlet of the biological aerated filter (11) lower part.
3. according to a kind of anaerobic digestion of kitchen wastes wastewater treatment equipment described in claim 1 or 2, it is characterized in that：Described
A/O biochemical treatment apparatus (6) in, equipped with by the aerobic zone (6b) muddy water mixed solution reflux in anoxic zone (6a) return
Flow tube part (6c), reflux pipe fitting (6c) are equipped with the first reflux pump (6d).
4. according to a kind of anaerobic digestion of kitchen wastes wastewater treatment equipment described in claim 1 or 2, it is characterized in that：Equipped with general
The partial sludge mixture of sedimentation basin (7) the lower part storage mud intracavitary flows back in A/O biochemical treatment apparatus in anoxic zone (6a)
Return duct (7b), return duct (7b) is equipped with the second reflux pump (7c).
5. according to a kind of anaerobic digestion of kitchen wastes wastewater treatment equipment described in claim 1 or 2, it is characterized in that：When described
When the interior muddy water mixed solution temperature of A/O biochemical treatment apparatus (6) is less than 20 DEG C, equipped with by the interior mud of the A/O biochemical treatment apparatus (6)
Water mixed liquid temperature rises to 20~35 DEG C of heating unit.
6. according to a kind of anaerobic digestion of kitchen wastes wastewater treatment equipment described in claim 1 or 2, it is characterized in that：When described
When the interior muddy water mixed solution temperature of A/O biochemical treatment apparatus (6) is higher than 35 DEG C, equipped with by the interior mud of the A/O biochemical treatment apparatus (6)
Water mixed liquid temperature is down to 20~35 DEG C of cooling device.
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