CN206437993U - A kind of kitchen garbage slurry anaerobic fermentation wastewater treatment equipment - Google Patents

Abstract

A kind of kitchen garbage slurry anaerobic fermentation wastewater treatment equipment.Handled after waste water elder generation through oil removal preliminary 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), Fenton reactor (8), coagulative precipitation tank (9), COD, BOD in waste water is removed₅, the pollutant such as SS while, can effectively remove TN, TP and effectively reduce chroma in waste water, and improve TN, TP clearance, COD, BOD in the waste water after processing₅、TN、NH₃The pollutants such as N, TP, colourity can be stably reached《Integrated wastewater discharge standard》(GB8978 1996) " grade III Standard " and《Sewage is discharged into town sewer water standard》(GB/T 31,962 2015) " B grades " requirements.

Description

A kind of kitchen garbage slurry anaerobic fermentation wastewater treatment equipment

Technical field

The utility model is related to a kind of kitchen garbage slurry anaerobic fermentation wastewater treatment equipment, and in particular to a kind of kitchen rubbish Waste water after the dehydration of rubbish slurry anaerobic fermentation, and kitchen garbage handle the wastewater produced processing unit of other processes, belong to dirty Water treatment field.

Background technology

Waste water after the dehydration of kitchen garbage slurry anaerobic fermentation, and kitchen garbage handle the waste water that other processes are produced, Waste component is complicated, the big high concentrated organic wastewater of category 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), suspension (SS,>8000mg/L), salt content (15000~30000mg/ L), vegetable and animals oils (800~1500mg/L), colourity (300~800 times).The hardly possible such as cellulose, protein, lipid in waste water is raw Thing degradation of organic substances matter institute accounting is big, its carbon-nitrogen ratio (BOD₅:TKN it is) low, 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 it is main at present using anaerobic bio-treated, Aerobic biological process and membrane technology processing etc. it is several or The processing unit of a variety of unit combinations.Waste water should reach after processing《Integrated wastewater discharge standard (GB8978-1996)》In " three Level standard " is and more strict《Sewage is discharged into town sewer water standard》GB/T 31962-2015) in " B grades " standard.

Have a kind of by " pretreatment unit+anaerobic processing device+aerobic treatment device+flocculation is sunk in existing processing unit The processing unit that shallow lake pond " is formed by combining, its deficiency is：One is that Anaerobic Treatment unit operational management requirement is high, especially anaerobism Processing unit consumes the carbon source in waste water in the process of running, carbon-nitrogen ratio in waste water is further declined (COD, BOD₅Reduction, ammonia Nitrogen is raised), the reduction of carbon-nitrogen ratio is less useful for the biological denitrificaion of waste water；Second, the ammonia nitrogen in waste water is mainly sent out in aerobic stage Give birth to nitration reaction and be converted into nitrate nitrogen and nitrite nitrogen, due to carbon-nitrogen ratio (BOD₅:TKN) relatively low shape is being in originally Reduced again under state, cause carbon source to lack, because without sufficient carbon source, it is impossible to complete denitrification denitrogenation, then total nitrogen fails effective drop Solution is with removing, and nitrogen removal rate is low, it is difficult to reach《Sewage is discharged into town sewer water standard》In (GB/T 31962-2015) The requirement of " B grades " standard.

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 is formed by combining of filter device ", its deficiency is, one be Anaerobic Treatment unit with the anaerobism in above-mentioned processing unit The problem of reason unit has same；Two be advanced treating of the reverse osmosis membrane filtration device as end, although can be met《Sewage It is discharged into town sewer water standard》The requirement of " B grades " standard, its defect is that grease in waste water is easily caused reverse osmosis membrane and blocked up High salt branch in plug, waste water accelerates the aging of reverse osmosis membrane, and reverse osmosis membrane service life is short, and especially reverse osmosis membrane filtration is filled It is a kind of physical filtering device to put, and simply retains the pollutant in waste water, pollutant is not degraded really, produced Raw a large amount of concentrates need to separately carry out the processing of complex process, be easily caused secondary pollution, and operating cost is higher.

The content of the invention

In view of the shortcomings of the prior art, the utility model provides a kind of kitchen garbage slurry anaerobic fermentation wastewater treatment dress Put, i.e. waste water after the dehydration of kitchen garbage slurry anaerobic fermentation and the wastewater produced place of other processes of kitchen garbage processing procedure Device is managed, 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 effectively reduction chroma in waste water, and improve TN, NH₃COD, BOD in-N, TP clearance, the waste water after processing₅、TN、NH₃- The pollutants such as N, TP, colourity can be stably reached《Integrated wastewater discharge standard》(GB8978-1996) " grade III Standard " and《Sewage It is discharged into town sewer water standard》GB/T 31962-2015) " B grades " requirement.

The technical solution of the utility model is as follows：

Referring to accompanying drawing, including oil removal preliminary 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, Fenton reactor 8, coagulative precipitation tank 9；

Oil slick baffle plate 1a is arranged at the top of oil removal preliminary sedimentation tank 1, and sludge bucket 1b is arranged at bottom, and sludge bucket has sludge outlet 1c, every The wastewater outlet of oily preliminary sedimentation tank 1 is communicated with the regulating reservoir 2, and oil removal preliminary sedimentation tank carries out oil removal, just heavy processing to waste water, removes big Partial suspended thing SS；

The regulating reservoir 2 is communicated with the first pH regulating reservoirs 3, and waste water water, water quality are adjusted regulating reservoir 2；

There is the first rabbling mechanism 3a in the first pH regulating reservoirs 3, the first pH regulating reservoirs (3) inner chamber is simultaneously thrown with alkali (NaOH) Plus component is communicated, the first pH regulating reservoirs 3 carry out first time regulation to the pH value of waste water, make the form of ammonia nitrogen in waste water by NH₄ ⁺Turn Turn to 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 the top of Ammonia blowing-out tower 4, and air intlet 4b is arranged at bottom, and the inner chamber top of Ammonia blowing-out tower 4, which has, matches somebody with somebody Water component 4c, water distribution component 4c waste water inlet is communicated with the first pH regulating reservoirs 3, the wastewater outlet of Ammonia blowing-out tower 4 and Two pH regulating reservoirs 5 are communicated, and waste water is handled through Ammonia blowing-out tower, are realized stripping and the removal of free ammonia, are made the carbon-nitrogen ratio in waste water (BOD₅:TKN) improve, suitable carbon-nitrogen ratio condition is provided for the biological denitrificaion of follow-up A/O biochemical treatment apparatus；

Have the second rabbling mechanism 5a in the 2nd pH regulating reservoirs 5, the 2nd pH regulating reservoirs (5) inner chamber and with sulfuric acid (H₂SO₄) Add component to communicate, the 2nd pH regulating reservoirs 5 are communicated with the anoxic zone 6a in the A/O biochemical treatment apparatus 6, the 2nd pH regulating reservoirs PH value to waste water carries out second of regulation, forms the suitable growing environment of microorganism, is the life of follow-up A/O biochemical treatment apparatus Change processing and necessary environment is provided；

Aerobic zone 6b in the A/O biochemical treatment apparatus 6 is communicated with the sedimentation basin 7,6 pairs of A/O biochemical treatment apparatus Waste water carries out biochemical treatment, effectively removes most COD, BOD₅, further remove NH₃- N, TN, effectively go dephosphorization；

Storage mud chamber 7a is arranged at the bottom of sedimentation basin 7, and storage mud chamber has sludge outlet, and the top of sedimentation basin 7 and the Fenton are anti- The waste water inlet of device 8 is answered to communicate, waste water further removes SS and TP through the precipitation process of sedimentation basin 7；

Be provided with Gas Stirring component 8a in the Fenton reactor 8, the inner chamber of Fenton reactor 8 and with sulfuric acid add component and Fenton reagent adds component and communicated, and waste water is connect in the Fenton reactor 8 under acid pH environment with Fenton reagent Reaction is touched, waste water is handled through Fenton reactor (8), further COD, BOD in reduction waste water₅, the coloured groups quilt in waste water Destruction, the colourity of waste water is effectively reduced；

The coagulative precipitation tank 9 includes coagulation area 9a and settling zone 9b, and sludge bucket 9c, sludge bucket are arranged at settling zone 9b bottom 9c is provided with mud mouth 9d, and coagulation area 9a adds component with alkali (NaOH) and communicated, and the wastewater outlet of the Fenton reactor 8 is with mixing The coagulation area 9a of solidifying sedimentation basin 9 is communicated；In operation, component is added from alkali (NaOH) alkali is added into coagulation area, and entered with waste water Row mixing, neutrality is adjusted to by pH value of waste water, and waste water occurs under pH neutral environment in the coagulation area 9a of coagulative precipitation tank Coagulating, forms water insoluble iron hydroxide, ferric phosphate flco, removes iron ion and TP in waste water, meanwhile, further COD, SS, colourity and the other pollutants in waste water are removed, the waste water after being handled through the coagulation area 9a enters coagulative precipitation tank Settling zone 9b, realize the supernatant qualified discharge in separation of solid and liquid, settling zone 9b, be deposited in sludge in sludge bucket 9c and be discharged into separately The mud storage pool 10 of outer setting.

Compared with the prior art, 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 regulation 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 switchs to gas phase by liquid phase and turns into ammonia-containing exhaust simultaneously Discharge, so as to realize effective removal of the Ammonia blowing-out tower to part free ammonia in waste water, TN, NH are effectively removed to realize₃- N and carry High TN, NH₃The purpose of-N clearances establishes good basis.

2nd, described " the pH regulating reservoir+A/O biochemical treatment apparatus of Ammonia blowing-out tower+the two " is constituted another in the utility model The processing unit of innovation, because the processing of the Ammonia blowing-out tower is effectively removed the free ammonia in waste water, is effectively improved 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, the suitable growth ring of microorganism is formd again Border；

It is right because the processing of Ammonia blowing-out tower for the biological denitrificaion of A/O biochemical treatment apparatus provides suitable carbon-nitrogen ratio condition The pH value of waste water carries out second of regulation and forms the suitable growing environment of microorganism again, 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 effectively be carried out 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, the carbon source effectively increased due to ammonia aeration processing procedure in the carbon-nitrogen ratio in waste water, waste water are enriched, A/ Denitrifying bacterium in O biochemical treatment apparatus anoxic zone consumes carbon source COD, BOD in waste water is removed₅While, by nitrate nitrogen Nitrogen is converted into cultured water, by nitrification-denitrification reaction, effective denitrogenation is realized；Meanwhile, the poly- phosphorus in activated sludge Bacterium (microorganism) absorbs phosphorus in metabolic processes, forms Quadrafos and is stored in described polyP bacteria (microorganism) in vivo, Effectively remove the phosphorus in waste water.

3rd, the combination of sedimentation basin follow-up in the utility model, Fenton reactor, coagulative precipitation tank and aforementioned processing unit Overall new departure that the utility model is handled waste water is constituted, corresponding effective processing effect is obtained in aforementioned processing unit On the basis of fruit, in the sedimentation basin processing of sedimentation basin, the SS in waste water is further eliminated；It is anti-in the Fenton of Fenton reactor Ying Zhong, reduce further COD, BOD in waste water₅With effective reduction chroma in waste water；In coagulative precipitation tank processing, further Remove COD, BOD₅, TP, SS and colourity.Make COD, BOD in the waste water after being handled through the utility model₅、TN、NH₃- N, TP, colourity It can be stably reached Deng pollutant《Integrated wastewater discharge standard》(GB8978-1996) " grade III Standard " and《Sewage is discharged into cities and towns Sewer water standard》The requirement of (GB/T 31962-2015) " B grades ", so as to avoid using reverse osmosis membrane processing technique institute The defect of presence.

4th, the front-end processing unit of " oil partiting precipitation pool+regulating reservoir " is employed in the utility model, i.e., processed is given up Water first carries out oil removal precipitation process by oil partiting precipitation pool to waste water, then waste water is adjusted processing by regulating reservoir, with routine First by regulating reservoir be adjusted processing, rear progress oil removal precipitation process mode ratio, grease can be avoided in regulating reservoir water area Poly- and large granular impurity and suspension sink to regulating reservoir bottom of pond under gravity, it is to avoid the frequent cleaning of regulating reservoir, favorably In raising operating efficiency.

The utility model is further illustrated with reference to embodiment.

Brief description of the drawings

Accompanying drawing is structural representation of the present utility model.

Embodiment

Referring to accompanying drawing, using treatment scale as 100m³Exemplified by/d kitchen garbage, waste-water, embodiment is as follows：

Waste water and kitchen garbage after the dehydration of kitchen garbage slurry anaerobic fermentation handle the waste water quality that other processes are produced： 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.

The utility model includes oil removal preliminary sedimentation tank 1, regulating reservoir 2, the first pH regulating reservoirs 3, Ammonia blowing-out tower 4, the 2nd pH regulations Pond 5, A/O biochemical treatment apparatus 6, sedimentation basin 7, Fenton reactor 8, coagulative precipitation tank 9.

Oil slick baffle plate 1a is arranged at the top of oil removal preliminary sedimentation tank 1, and sludge bucket 1b is arranged at bottom, and sludge bucket has sludge outlet 1c, gives up Water enters oil removal preliminary sedimentation tank by waste pipe, and oil removal preliminary sedimentation tank carries out oil removal, just heavy processing to waste water, removes most suspended substances SS, the wastewater outlet of oil removal preliminary sedimentation tank 1 is communicated with regulating reservoir 2；In operation, the oil slick baffle plate is excluded to be floated on waste water in freedom The oil slick of layer, the oil slick of retention is periodically removed using corresponding device, and the large granular impurity and bulky grain suspension in waste water exist It is deposited in the sludge bucket of oil removal preliminary sedimentation tank bottom in the presence of gravity, the sludge outlet 1c of the sludge of precipitation on sludge bucket 1b Discharge, realizes most suspended substances SS removal；In specific implementation, the sludge discharged by sludge bucket 1b enters the storage set in addition In mud sump 10；The wastewater outlet of the oil removal preliminary sedimentation tank 1 is connected with regulating reservoir 2 by pipe fitting or pocket member.

Water, the water quality of waste water are adjusted the regulating reservoir 2, in favor of the stable operation of subsequent treatment process, adjust Section pond 2 is communicated with the first pH regulating reservoirs 3；

The oil removal preliminary sedimentation tank and regulating reservoir can use armored concrete pond body or carbon steel anticorrosion equipment pond body, this example Oil removal preliminary sedimentation tank size：5m × 2m × 3m (depth), regulating reservoir dischargeable capacity 100m³.After oil removal preliminary 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, the inner chamber of the first pH regulating reservoirs 3 is simultaneously added with alkali (NaOH) Component is communicated, and the first pH regulating reservoirs 3 carry out first time regulation to the pH value of waste water, and the pH value of waste water is adjusted to 10.5~12, Under the pH value, make the form of ammonia nitrogen in waste water by NH₄ ⁺It is converted into free ammonia (NH₃), in being follow-up Ammonia blowing-out tower processing procedure Effectively remove ammonia nitrogen and advantage is provided；In operation, NaOH is added into pond and mixing is stirred, realized to pH value of waste water Adjust for the first time；It is 1.5m × 1.5m × 1.5m (depth), configuration pH value detector and control that first pH of this example, which adjusts 3 pool sizes, Instrument automatically controls the dosage of aqueous slkali.

Offgas outlet 4a is arranged at the top of Ammonia blowing-out tower 4, and air intlet 4b is arranged at bottom, and the inner chamber top of Ammonia blowing-out tower 4, which has, matches somebody with somebody Water component 4c, water distribution component 4c waste water inlet is communicated with the first pH regulating reservoirs 3, and waste water is handled through Ammonia blowing-out tower, is 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 provided with the middle part of the inner chamber of stripping tower 4, 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 being handled through 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 bottom up by Ammonia blowing-out tower inner chamber blows, the air-flow of rising and even drop down it is useless Water is fully contacted, 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, because partially or mostly free ammonia is by stripping and removal, 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 are filled In the Nitrogen removal effect put, 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 being handled through ammonia aeration；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 it is useless 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 --- and tail gas absorber is handled, using dilute sulfuric acid as ammonia absorbing liquid, tail containing ammonia Gas, which contact and produces to chemically react with entering the absorbing liquid in tail gas absorber, generates ammonium sulfate, the ammonia in ammonia-containing gas from Gas is transferred in absorbing liquid, and the tail gas qualified discharge after absorption, absorbing liquid (ammonium sulfate) can be used as agricultural fertilizer or other Purposes.

Have the second rabbling mechanism 5a in the 2nd pH regulating reservoirs 5, the inner chamber of the 2nd pH regulating reservoirs 5 and with sulfuric acid (H₂SO₄) throw Plus component is communicated, the 2nd pH regulating reservoirs carry out second to the pH value of waste water and adjusted, and pH value of waste water is adjusted to 7.0~8.5, shape Into the suitable growing environment of microorganism, necessary environment, the 2nd pH regulations are provided for the biochemical treatment of follow-up A/O biochemical treatment apparatus Pond 5 is communicated with the anoxic zone 6a in A/O biochemical treatment apparatus 6；In operation, sulfuric acid H is added into pond₂SO₄And be stirred mixed Close, realize that carrying out second to the pH value of waste water is adjusted, configuration pH value Detection ＆ Controling instrument automatically controls adding for sulfuric acid solution Amount；In this example, the 2nd pH regulation pool sizes：1.5m × 1.5m × 1.5m (depth).The wastewater outlet of the Ammonia blowing-out tower 4 passes through pipe Part or other components are connected with the waste water inlet of the 2nd pH regulating reservoirs.The 2nd pH regulating reservoirs 5 pass through pump 5b and corresponding pipe fitting Communicated with the anoxic zone 6a in A/O biochemical treatment apparatus 6.

The A/O biochemical treatment apparatus 6 carries out biochemical treatment to waste water, effectively removes most COD, BOD₅, further Remove NH₃- N, TN, effectively remove the aerobic zone 6b and the sedimentation basin 7 in the phosphorus in waste water, the A/O biochemical treatment apparatus 6 Communicate；In operation, micro- life in the aerobic zone 6b of A/O biochemical treatment apparatus 6 (dissolved oxygen is 1.5~2.5mg/L) interior activated sludge Thing can effectively carry out metabolic (activated sludge concentration MLSS, 3.5~4.5g/L), by COD, BOD in waste water₅Degraded, has Effect removes most COD, BOD₅, while the ammonium oxidation in waste water is nitrate nitrogen and Asia by the nitrobacteria in activated sludge Nitrate nitrogen, due to the carbon-nitrogen ratio (BOD in waste water₅:TKN) effectively improved in ammonia aeration processing procedure, the carbon in waste water Source is enriched, and the denitrifying bacterium consumption carbon source in the anoxic zone 6a of A/O biochemical treatment apparatus 6 (dissolved oxygen is 0.2~0.5mg/L) is being gone Except COD, BOD in waste water₅While, nitrate nitrogen and cultured water are converted into nitrogen, NH is further removed₃- N, TN, pass through Nitrification-denitrification reaction, realizes effective denitrogenation, meanwhile, the polyP bacteria (microorganism) in activated sludge is in metabolic processes Phosphorus is absorbed, Quadrafos is formed and is stored in described polyP bacteria (microorganism) in vivo, effectively (biology is removed the phosphorus in removal waste water Phosphorus)；Muddy water mixed solution in the A/O biochemical treatment apparatus in the 6b of aerobic zone is flowed back in the anoxic zone 6a by backflow member 6c It is interior, formed " interior backflow ", reflux ratio is that the internal reflux ratio in 200%~500%, this example is 300%~400%.Waste water is in institute It is 10~20 days, wherein anoxic zone 4~6 days, aerobic zone 6~15 to state the total hrt in A/O biochemical treatment apparatus 6 My god, in this example, total hrt is 17 days, wherein anoxic zone 4 days, aerobic zone 13 days.In this example, at the A/O biochemistry Manage the anaerobic-aerobic activated sludge process that device is existing anaerobic-aerobic activated sludge process sewage-treatment plant or existing structure Treatment tank, is made up of, size is anoxic zone, aerobic zone and backflow member, valve, pipeline, rabbling mechanism, aeration mechanism etc. 20m × 20m × 5m (depth).Water outlet COD ＜ 700mg/L, BOD after being handled through A/O biochemical treatment apparatus₅＜ 200mg/L, NH₃-N ＜ 30mg/L, TN ＜ 80mg/L.

Storage mud chamber 7a is arranged at the bottom of sedimentation basin 7, and storage mud chamber has sludge outlet, and waste water enters through sedimentation basin precipitation process One step removes the SS and TP in waste water, and the top of sedimentation basin 7 is communicated with the waste water inlet of the Fenton reactor 8；In operation, waste water Mud-water separation is realized in sedimentation basin 7, SS, TP is further removed；The partial sludge of the bottom of the sedimentation basin 7 storage mud intracavitary passes through In the anoxic zone 6a that reflux 7b flows back in A/O biochemical treatment apparatus, return sludge ratio is 50~100%, for maintaining The activated sludge concentration of A/O biochemical treatment apparatus；Waste water SS ＜ 100mg/L, TP ＜ 30mg/L after being handled through sedimentation basin.Specifically In implementation, the excess sludge of storage mud intracavitary is then discharged into the mud storage pool 10 set in addition by the sludge outlet 7a of storage mud chamber.

Be provided with Gas Stirring component 8a in the Fenton reactor 8, the inner chamber of Fenton reactor 8 and with sulfuric acid add component and Fenton reagent adds component and communicated；Waste water is connect in the Fenton reactor 8 under acid pH environment with Fenton reagent Reaction is touched, further COD, BOD in reduction waste water₅, the coloured groups in waste water are destroyed, and the colourity of waste water is effectively reduced； In operation, component is added into the water inlet pipe of Fenton reactor 8 by sulfuric acid and adds sulfuric acid, will entered in Fenton reactor 8 PH value of waste water is adjusted to acidity, is carried out into the waste water in Fenton reactor 8 and the Fenton reagent added in haptoreaction, waste water Difficult for biological degradation organic pollutant under the strong oxidation of Fenton reagent be oxidized, macromolecular is changed into small molecule, easily In biochemical degradation, the biodegradability of waste water is improved, while partial organic substances are inorganic matter by exhaustive oxidation, further reduces waste water In COD, BOD₅, meanwhile, the coloured groups in waste water are destroyed, and the colourity of waste water is effectively reduced；Fenton reactor is existing , reaction time (hydraulic detention time) of the waste water in Fenton reactor 8 be 1~2 hour, in Fenton reagent hydrogen peroxide with The mol ratio of ferrous ion is 1~3:1, the dosage of the Fenton reagent COD concentration in water inlet is determined.In this example：Fenton is anti- It is φ 2m × 3m to answer device size, and reaction time (hydraulic detention time) of the waste water in Fenton reactor is about 1.5 hours, is passed through Pipe-line mixer adds sulfuric acid, and dosage is automatically controlled according to the pH value Detection ＆ Controling instrument of setting, and the pH value of waste water is adjusted For 4~5, the mol ratio of hydrogen peroxide and ferrous ion is 1.5 in the Fenton reagent added:1.After being handled through Fenton reactor Water outlet COD ＜ 250mg/L, BOD₅100 times of ＜ 120mg/L, colourity ＜.

The coagulative precipitation tank 9 includes coagulation area 9a and settling zone 9b, and sludge bucket 9c, sludge bucket are arranged at settling zone 9b bottom Add components of the 9c provided with mud mouth 9d, coagulation area 9a and alkali NaOH is communicated, and the wastewater outlet of the Fenton reactor 8 is with mixing The coagulation area 9a of solidifying sedimentation basin 9 is communicated；Waste water carries out coagulating sedimentation under pH neutral environment in coagulative precipitation tank, removes useless Iron ion and TP in water, further remove COD, SS, colourity and the other pollutants in waste water, and solid-liquid point is realized to waste water From；In operation, alkali is added into the waste water for entering coagulation area 9a, the pH value of waste water is adjusted to iron ion in neutrality, waste water Occur coagulation process in coagulation area in neutral conditions, form water insoluble iron hydroxide, ferric phosphate flco, remove in waste water Iron ion and TP, while flocculation can further remove COD, SS, colourity and other pollutants in waste water；Through described mixed Waste water after coagulation zone 9a processing enters the settling zone 9b of coagulative precipitation tank, realizes separation of solid and liquid, the precipitation of the coagulative precipitation tank Supernatant qualified discharge in area 9b；In this example, coagulative precipitation tank is the coagulative precipitation tank of existing structure, passes through pipe-line mixer Component adds alkali NaOH in the water inlet pipe of the coagulation area 9a, sets pH value Detection ＆ Controling instrument to automatically control the throwing of aqueous slkali Dosage, the pH value of waste water for entering coagulation area 9a is adjusted to 7~8 i.e. neutrality, waste water is in coagulation area 9a reaction time Tube settling component is provided with 20min, settling zone 9b, waste water is 1m in settling zone 9b hydraulic surface loading³/m².h.Through coagulation Water outlet COD ＜ 200mg/L, BOD after sedimentation basin processing₅50 times of ＜ 100mg/L, TP ＜ 6mg/L, SS ＜ 50mg/L, colourity ＜, Supernatant qualified discharge in the settling zone 9b, is deposited in sludge in the sludge bucket 9c and is discharged into the mud storage pool set in addition 10。

In specific implementation, the sludge in mud storage pool 10 is separately disposed after being handled through device for dehydrating sladge waste；Device for dehydrating sladge waste Can be using centrifugal dehydrator or belt type dewaterer etc., this example uses centrifugal dehydrator, the sludge outward transport after dehydration.

After waste water is handled through the utility model device, pollutant concentration value and pollutants removal rate are as follows：

Go out water pollutant index to be superior to《Integrated wastewater discharge standard (GB8978-1996)》In " grade III Standard " and 《Sewage is discharged into town sewer water standard》" B grades " standard in GB/T 31962-2015.

Claims (3)

1. a kind of kitchen garbage slurry anaerobic fermentation wastewater treatment equipment, it is characterized in that including：Oil removal preliminary 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), Fenton reactor (8), coagulative precipitation tank (9)；

Oil slick baffle plate (1a) is arranged at oil removal preliminary sedimentation tank (1) top, and sludge bucket (1b) is arranged at bottom, and sludge bucket has sludge outlet (1c), the wastewater outlet of oil removal preliminary sedimentation tank (1) is communicated with the regulating reservoir (2), and oil removal preliminary sedimentation tank carries out oil removal to waste water, just sunk Processing, removes most suspended substances SS；

The regulating reservoir (2) communicates with the first pH regulating reservoirs (3), and waste water water, water quality are adjusted regulating reservoir (2)；

There is the first rabbling mechanism (3a) in the first pH regulating reservoirs (3), the first pH regulating reservoirs (3) inner chamber simultaneously adds component with alkali Communicate, the first pH regulating reservoirs (3) carry out first time regulation 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)；

Offgas outlet (4a) is arranged at Ammonia blowing-out tower (4) top, and air intlet (4b), Ammonia blowing-out tower (4) inner chamber top are arranged at bottom There is water distribution component (4c), the waste water inlet of water distribution component (4c) is communicated with the first pH regulating reservoirs (3), Ammonia blowing-out tower (4) Wastewater outlet is communicated with the 2nd pH regulating reservoirs (5), and waste water is handled through Ammonia blowing-out tower, realizes stripping and the removal of free ammonia, Make the carbon-nitrogen ratio (BOD in waste water₅:TKN) improve；

Have the second rabbling mechanism (5a) in the 2nd pH regulating reservoirs (5), the 2nd pH regulating reservoirs (5) inner chamber and with sulfuric acid (H₂SO₄) Add component to communicate, the 2nd pH regulating reservoirs (5) are communicated with the anoxic zone (6a) in the A/O biochemical treatment apparatus (6), the 2nd pH Regulating reservoir carries out second to the pH value of waste water and adjusted, and forms the suitable growing environment of microorganism；

Aerobic zone (6b) in the A/O biochemical treatment apparatus (6) is communicated with the sedimentation basin (7), A/O biochemical treatment apparatus (6) biochemical treatment is carried out to waste water, effectively removes most COD, BOD₅, further remove NH₃- N, TN, effectively go dephosphorization；

Storage mud chamber (7a) is arranged at sedimentation basin (7) bottom, and storage mud chamber has sludge outlet, sedimentation basin (7) top and the Fenton The waste water inlet of reactor (8) is communicated, and waste water further removes ss suspended solid and TP in waste water through sedimentation basin (7) precipitation process；

Gas Stirring component (8a) is provided with the Fenton reactor (8), Fenton reactor (8) inner chamber simultaneously adds component with sulfuric acid Component is added with Fenton reagent to communicate, waste water is handled through Fenton reactor (8), further COD, BOD in reduction waste water₅, give up Coloured groups in water are destroyed, and the colourity of waste water is effectively reduced；

The coagulative precipitation tank (9) includes coagulation area (9a) and settling zone (9b), and the bottom of settling zone (9b) is provided with sludge bucket (9c), sludge bucket is provided with mud mouth (9d), and coagulation area 9a is communicated with the alkali NaOH component that adds, the Fenton reactor (8) Wastewater outlet is communicated with the coagulation area (9a) of coagulative precipitation tank, is handled through coagulative precipitation tank (9), removes the iron ion in waste water With TP, COD, SS, colourity and the other pollutants in waste water are further removed, and separation of solid and liquid, the coagulation are realized to waste water Supernatant qualified discharge in the settling zone (9b) of sedimentation basin.

2. according to a kind of kitchen garbage slurry anaerobic fermentation wastewater treatment equipment described in claim 1, it is characterized in that, the A/ Muddy water mixed solution in O biochemical treatment apparatus in aerobic zone (6b) is flowed back in anoxic zone (6a) by backflow member (6c), backflow Than for 200%~500%.

3. according to a kind of kitchen garbage slurry anaerobic fermentation wastewater treatment equipment described in claim 1, it is characterized in that：It is described heavy The partial sludge of shallow lake pond (7) bottom storage mud intracavitary is flowed back anoxic zone (6a) in A/O biochemical treatment apparatus by reflux (7b) Interior, return sludge ratio is 50~100%.