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CN107311403A - Kitchen garbage fermentation waste water processing unit - Google Patents

Kitchen garbage fermentation waste water processing unit Download PDF

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Publication number
CN107311403A
CN107311403A CN201710684248.8A CN201710684248A CN107311403A CN 107311403 A CN107311403 A CN 107311403A CN 201710684248 A CN201710684248 A CN 201710684248A CN 107311403 A CN107311403 A CN 107311403A
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CN
China
Prior art keywords
waste water
communicated
zone
coagulation area
coagulative precipitation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201710684248.8A
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Chinese (zh)
Inventor
蒋剑虹
罗友元
唐清畅
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China Machinery International Engineering Design and Research Institute Co Ltd
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China Machinery International Engineering Design and Research Institute Co Ltd
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Priority to CN201710684248.8A priority Critical patent/CN107311403A/en
Publication of CN107311403A publication Critical patent/CN107311403A/en
Pending legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00—Multistage treatment of water, waste water or sewage
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/5281—Installations for water purification using chemical agents
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C02F1/722—Oxidation by peroxides
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F2001/007—Processes including a sedimentation step
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00—General aspects of water treatment
    • C02F2301/04—Flow arrangements
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00—General aspects of water treatment
    • C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00—Specific treatment goals
    • C02F2303/04—Disinfection
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2305/00—Use of specific compounds during water treatment
    • C02F2305/02—Specific form of oxidant
    • C02F2305/026—Fenton's reagent
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/02—Aerobic processes
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/30—Aerobic and anaerobic processes
    • C02F3/301—Aerobic and anaerobic treatment in the same reactor
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/30—Aerobic and anaerobic processes
    • C02F3/302—Nitrification and denitrification treatment

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  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Separation Of Suspended Particles By Flocculating Agents (AREA)

Abstract

Kitchen garbage fermentation waste water processing unit, is related to the wastewater treatment equipment after kitchen garbage slurry anaerobic digestion dehydration.Through oil removal preliminary sedimentation tank (1), regulating reservoir (2), A/O biochemical treatment apparatus (3), sedimentation basin (4), the first coagulative precipitation tank (5), Fenton reactor (6), the second coagulative precipitation tank (7), BAF (8) processing after waste water elder generation, COD, BOD in effectively removal waste water is met5, the pollutant such as SS while, can effectively remove TN, TP and effectively reduction chroma in waste water and improve COD, BOD in TN, TP clearance, the waste water after processing5、NH3The pollutants such as N, TP, colourity can be stably reached《Integrated wastewater discharge standard》(GB8978 1996) " primary standard " requirement.

Description

Kitchen garbage fermentation waste water processing unit
Technical field
The invention belongs to a kind of kitchen garbage fermentation waste water processing unit, and in particular to a kind of kitchen garbage slurry anaerobism disappears Change the waste water after dehydration, and kitchen garbage handles the wastewater produced processing unit of other processes, belongs to sewage treatment area.
Background technology
Waste water after kitchen garbage slurry anaerobic digestion dehydration, 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 is main at present to be used 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 strict《Integrated wastewater discharge standard》(GB8978-1996) " primary standard ".
Publication number CN106396282A document discloses a kind of " kitchen garbage slurry anaerobic fermentation wastewater treatment equipment ", The device includes oil removal preliminary 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.Blown after waste water elder generation through oil removal preliminary 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 COD, BOD in clearance, the waste water after processing5、TN、NH3The pollutants such as-N, TP, colourity can be stably reached《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, with better effects, but are 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 that one is that Anaerobic Treatment unit operational management requirement is high, is especially detested 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, BOD5Reduction, Ammonia nitrogen is raised), the reduction of carbon-nitrogen ratio is less useful for the biological denitrificaion of waste water；Two be 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 is that the grease in waste water is easily caused 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, simply the pollutant in waste water is retained, pollutant not degraded really, it is produced 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 present invention provides a kind of kitchen garbage fermentation waste water processing unit, i.e. kitchen garbage Waste water and the wastewater produced processing unit of other processes of kitchen garbage processing procedure after slurry anaerobic digestion dehydration, the present apparatus While the pollutant such as COD, BOD, SS in meeting effectively removal waste water, TN, NH can be effectively removed3- N, TP and effectively reduction Chroma in waste water, and improve TN, NH3COD, BOD in-N, TP clearance, the waste water after processing5、NH3- N, TP, colourity etc. pollute Thing can be stably reached《Integrated wastewater discharge standard》(GB8978-1996) requirement of " primary standard ".
Technical scheme is as follows：
It is heavy referring to accompanying drawing, including oil removal preliminary sedimentation tank 1, regulating reservoir 2, A/O biochemical treatment apparatus 3, sedimentation basin 4, the first coagulation Shallow lake pond 5, Fenton reactor 6, the second coagulative precipitation tank 7, BAF 8；
Oil slick baffle plate 1a is arranged at the top of oil removal preliminary sedimentation tank 1, and mud chamber 1b is arranged at bottom, and sludge is arranged at the mud chamber 1b bottoms Outlet, the wastewater outlet of oil removal preliminary sedimentation tank 1 is communicated with the regulating reservoir 2；The oil removal preliminary sedimentation tank carries out oil removal to waste water, just sunk Processing, removes most suspended substances SS；
Waste water water, water quality are adjusted the regulating reservoir 2；
The A/O biochemical treatment apparatus 3 includes anoxic zone 3a and aerobic zone 3b, the anoxic zone 3a and aerobic zone 3b tops Communicate, the delivery port of the regulating reservoir 2 is communicated with the anoxic zone 3a of A/O biochemical treatment apparatus 3, A/O biochemical treatment apparatus 3 it is good Oxygen area 3b is communicated with the sedimentation basin 4；A/O biochemical treatment apparatus 3 to waste water carry out biochemical treatment, effectively remove most COD, BOD5、NH3- N, effectively removes TN, TP；
The bottom of sedimentation basin 4 has storage mud chamber 4a, storage mud chamber 4a bottoms to have sludge outlet；Waste water is precipitated through sedimentation basin 4 Processing, further removes SS and TP；
First coagulative precipitation tank 5 includes the first coagulation area 5a and the first settling zone 5b, the first coagulation area 5a and first Settling zone 5b tops are communicated, and the first coagulation area 5a is communicated with the delivery port on the top of sedimentation basin 4, in the first coagulation area 5a Provided with the first rabbling mechanism 5c, the first sludge bucket 5d is arranged at the first settling zone 5b bottoms, and mud mouth is arranged at the first sludge bucket 5d bottoms, the One coagulation area 5a is communicated with coagulant dosage component, the first settling zone 5b of first coagulative precipitation tank 5 wastewater outlet with Fenton reactor 6 is communicated；In operation, from coagulant dosage component into coagulation area dosing coagulant, and with waste water carry out coagulation, Phosphate, the colloid pollutant in waste water are removed, the pollutants such as COD, SS, colourity are further removed, through first coagulation Waste water after area 5a processing enters the first settling zone 5b, realizes separation of solid and liquid；
Gas Stirring component 6a is provided with the Fenton reactor 6, the inner chamber of Fenton reactor 6 adds component and sweet smell with sulfuric acid The reagent that pauses adds component and communicated；Waste water is contacted in the Fenton reactor 6 under acid pH environment with Fenton reagent Reaction, waste water is handled through Fenton reactor, further COD, BOD in reduction waste water5, meanwhile, the coloured groups quilt in waste water Destruction, is that the colourity that follow-up second coagulative precipitation tank effectively reduces waste water creates conditions；
Second coagulative precipitation tank 7 includes the second coagulation area 7a and the second settling zone 7b, the second coagulation area 7a and second Settling zone 7b tops are communicated, and the 4th rabbling mechanism 7c are provided with the second coagulation area 7a, the second settling zone 7b bottoms have second Mud mouth is arranged at sludge bucket 7d, the second sludge bucket 7d bottoms, and the second coagulation area 7a adds component with alkali and communicated, the Fenton reactor 6 wastewater outlet is communicated with the second coagulation area 7a of the second coagulative precipitation tank 7, the second settling zone 7b of the second coagulative precipitation tank 7 Top delivery port is communicated with the top of BAF 8；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, waste water is under pH neutral environment, and second in coagulative precipitation tank mixes Coagulating occurs in coagulation zone 7a, water insoluble iron hydroxide, ferric phosphate flco is formed, remove iron ion in waste water with TP, meanwhile, COD, SS, colourity and the other pollutants in waste water are further removed, after being handled through the second coagulation area 7a Waste water enters the second settling zone 7b, realizes separation of solid and liquid；
The intracavity bottom of BAF 8 is provided with aeration component 8a, and there are biological filter bed of material 8b, aeration and biological filter in middle part Delivery port is arranged at the bottom of pond 8；BAF 8 carries out biological and physical treatment to waste water, and waste water is fully contacted with microbial film, Organic matter in degrading waste water simultaneously carries out nitration denitrification denitrogenation, while carrying out the filtering and absorption of filtrate, further eliminates COD, BOD in waste water5、TN、NH3-N、SS；Discharged wastewater met the national standard after the processing of BAF 8.
The invention has the characteristics that and technique effect：
1st, described " heavy processing+regulating reservoir regulation+A/O biochemical treatment apparatus at the beginning of oil removal " is formed into a kind of wound in the present invention New processing unit, i.e., first carry out oil removal precipitation process to processed waste water, then waste water be adjusted processing, with routine Processing, the rear mode ratio for carrying out oil removal precipitation process is first adjusted, grease can be avoided in the accumulation of the regulating reservoir water surface and big Grain impurity and suspension sink to regulating reservoir bottom of pond under gravity, it is to avoid the frequent cleaning of regulating reservoir, are conducive to improving and make Industry efficiency；During A/O biochemical treatment apparatus carries out biochemical treatment to waste water, in the aerobic zone of A/O biochemical treatment apparatus Microorganism in activated sludge can effectively carry out metabolism, by COD, BOD in waste water5Degraded, while in activated sludge Ammonium oxidation in waste water is nitrate nitrogen and cultured water, the denitrification in A/O biochemical treatment apparatus anoxic zone by nitrifier Bacterium consumes carbon source COD, BOD in waste water is removed5While, nitrate nitrogen and cultured water are converted into nitrogen, by nitrification- Anti-nitration reaction, realizes effective denitrogenation；Meanwhile, the polyP bacteria (microorganism) in activated sludge absorbs in metabolic processes Phosphorus, forms Quadrafos and is stored in described polyP bacteria (microorganism) in vivo, effectively removes the phosphorus in waste water.
2nd, the follow-up " sedimentation basin+first time coagulating sedimentation+coagulating sedimentation of Fenton's reaction+second+aeration and biological of the present invention Filter tank " constitutes overall new departure that the present invention is handled waste water with combining for aforementioned processing unit, in aforementioned processing list Member is obtained on the basis of corresponding effective treatment effect, in the sedimentation basin processing of sedimentation basin, is further eliminated in waste water SS；Colloid pollutant, COD, SS, TP are further eliminated in the first coagulative precipitation tank, waste water is through the first coagulative precipitation tank After processing, the COD pollutants in water, particularly macromolecular Recalcitrant chemicals obtain part removal, can reduce follow-up Fenton anti- The dosage of Fenton reagent in device is answered, the cost of Fenton reagent is saved；Fenton reactor reduce further COD in waste water, BOD5, the coloured groups in waste water are destroyed, and are that the colourity that follow-up second coagulative precipitation tank effectively reduces waste water creates conditions； Second coagulative precipitation tank processing in, Fenton's reaction water outlet pH is adjusted to neutrality, further remove waste water in COD, SS, colourity and Other pollutants；In the biology and physical treatment step of BAF, COD, BOD are further removed5、TN、NH3- N, together When remove the SS that remains in waste water, make it is processed by the invention after waste water in COD, BOD5、NH3The pollutants such as-N, TP, colourity are equal It can stably reach《Integrated wastewater discharge standard》(GB8978-1996) requirement of " primary standard ".
3rd, the present invention " on the basis of publication number CN106396282A " technical scheme, is being additionally arranged in Fenton reactor front end " first time coagulating sedimentation ", " second of coagulating sedimentation ", " BAF " is additionally arranged in Fenton reactor rear end, i.e., successively Constitute the rear portion " the first time coagulative precipitation tank+coagulative precipitation tank of Fenton reactor+second+aeration and biological filter of the present invention program The processing unit in pond " so that COD, BOD in the waste water after processed by the invention5、NH3The pollutants such as-N, TP, colourity can be stablized Reach《Integrated wastewater discharge standard》(GB8978-1996) requirement of " primary standard ", and the part set up can be using existing There is technical pattern, it is stable, it is easy to safeguard, it is possible to decrease operating cost, relative to existing " pretreatment+anaerobism+aerobic+depth Degree handles (reverse osmosis membrane filtration) " combination unit, it is to avoid the combination unit is because being existed using Anaerobic Treatment and membrane technology It is not enough.
With reference to embodiment, the present invention is further described.
Brief description of the drawings
Accompanying drawing is the structural representation of the present invention.
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 kitchen garbage slurry anaerobic digestion dehydration 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.
Referring to accompanying drawing, the present invention includes oil removal preliminary sedimentation tank 1, regulating reservoir 2, A/O biochemical treatment apparatus 3, sedimentation basin 4, first Coagulative precipitation tank 5, Fenton reactor 6, the second coagulative precipitation tank 7, BAF 8,；
Oil slick baffle plate 1a is arranged at the top of oil removal preliminary sedimentation tank 1, and mud chamber 1b is arranged at bottom, and sludge outlet is arranged at mud chamber bottom 1c, waste 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 of outstanding Float SS, the wastewater outlet of oil removal preliminary sedimentation tank 1 is communicated with regulating reservoir 2；In operation, the oil slick baffle plate exclude float in freedom it is useless The oil slick of layer waterborne, the oil slick of retention is 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 preliminary sedimentation tank bottom under gravity, the sludge of precipitation by mud chamber 1b bottoms sludge 1c discharges are exported, most suspended substances SS removal is realized；In specific implementation, the sludge discharged by mud chamber 1b enters to be set in addition In the mud storage pool 10 put；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, real Shi Zhong, is provided with elevator pump 2a in regulating reservoir 2, and elevator pump 2a delivery port is lacked by pipe fitting and A/O biochemical treatment apparatus 3 Oxygen area 3a is communicated；
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.
Include in the A/O biochemical treatment apparatus 3 on anoxic zone 3a and aerobic zone 3b, the anoxic zone 3a and aerobic zone 3b Portion is communicated, and the aerobic zone 3b in A/O biochemical treatment apparatus 3 is communicated with the sedimentation basin 4；A/O biochemical treatment apparatus 3 enters to waste water Row biochemical treatment, effectively removes most COD, BOD5、NH3- N, effectively removes TN, TP；In implementation, in the A/O biochemical treatments In device 3, provided with the muddy water mixed solution in the aerobic zone 3b is flowed back in the backflow pipe fitting 3c in the 3a of anoxic zone, flow back pipe fitting 3c is provided with the first reflux pump 3d, and the muddy water mixed solution in the 3b of aerobic zone is flowed back in the anoxic zone 3a by backflow member 3c, Formed " interior backflow ", reflux ratio is that the internal reflux ratio in 200%~500%, this example is 300%~400%.In operation, A/O lifes Microorganism in change processing unit 3 aerobic zone 3b (dissolved oxygen is 1.5~2.5mg/L) interior activated sludge can effectively carry out new old It is metabolized (activated sludge concentration MLSS, 3.5~4.5g/L), by COD, BOD in waste water5Degraded, effectively removal most COD, BOD5, while the ammonium oxidation in waste water is at nitrate nitrogen and cultured water, A/O biochemistry by the nitrobacteria in activated sludge Manage the denitrifying bacterium consumption carbon source in the anoxic zone 3a of device 3 (dissolved oxygen is 0.2~0.5mg/L) COD, BOD in waste water is removed5 While, nitrate nitrogen and cultured water are converted into nitrogen, NH is further removed3- N, TN, by nitrification-denitrification reaction, Effective denitrogenation is realized, meanwhile, the polyP bacteria (microorganism) in activated sludge absorbs phosphorus in metabolic processes, forms polyphosphoric acid Salt is stored in described polyP bacteria (microorganism) in vivo, effectively removes the phosphorus (biological phosphate-eliminating) in waste water；Waste water is given birth in the A/O It is 10~20 days, wherein anoxic zone 4~6 days, aerobic zone 6~15 days, this example to change the total hrt in processing unit 3 In, total hrt is 17 days, wherein anoxic zone 4 days, aerobic zone 13 days；In operation, the A/O biochemical treatment apparatus 3 The temperature control of interior muddy water mixed solution is controlled at 20~35 DEG C, in this example at 25~35 DEG C；In this example, the A/O biochemical treatments Device is the anaerobic-aerobic activated sludge process dirt of existing anaerobic-aerobic activated sludge process sewage-treatment plant or existing structure Water treating pond, is made up of, size is 20m anoxic zone, aerobic zone and backflow member, valve, pipeline, rabbling mechanism, aeration mechanism etc. × 20m × 5m (depth)；Water outlet COD ＜ 700mg/L, BOD after being handled through A/O biochemical treatment apparatus5＜ 200mg/L, NH3- N ＜ 30mg/L；In operation, when the temperature of muddy water mixed solution in the A/O biochemical treatment apparatus 3 is less than 20 DEG C, set the A/ Muddy water mixed solution temperature rises to 20~35 DEG C of heater in O biochemical treatment apparatus 3, such as：Using direct-fired electrical heating Device uses the heaters such as heat-exchange device, when muddy water mixed solution temperature is higher than 35 DEG C in the A/O biochemical treatment apparatus 3 When, muddy water mixed solution temperature in the A/O biochemical treatment apparatus 3 is down to 20~35 DEG C of cooling device by setting, such as using cold But the device such as device or cooling tower.
The bottom of sedimentation basin 4 has storage mud chamber 4a, storage mud chamber 4a bottoms to have sludge outlet, and waste water is through sedimentation basin place of settling Reason, further removes the SS and TP in waste water, and the delivery port on the top of sedimentation basin 4 is mixed with the first of first coagulative precipitation tank 5 Coagulation zone 5a waste water inlets are communicated；In implementation, provided with by the bottom of sedimentation basin 4 store mud intracavitary partial sludge mixture flow back in Return duct 4b in A/O biochemical treatment apparatus in the 3a of anoxic zone, return duct 4b are provided with the second reflux pump 4c, the sedimentation basin 4 In the anoxic zone 3a that partial sludge mixture in the storage mud chamber 4a of bottom flows back in A/O biochemical treatment apparatus, reflux ratio is 50 ~100%, the activated sludge concentration for maintaining A/O biochemical treatment apparatus；In operation, waste water realizes muddy water in sedimentation basin 4 Separation, further removes SS, TP；Waste water SS ＜ 100mg/L, TP ＜ 30mg/L after being handled through sedimentation basin.In specific implementation, institute The excess sludge stated in storage mud chamber 4a is discharged into the mud storage pool 10 set in addition.
First coagulative precipitation tank 5 includes the first coagulation area 5a and the first settling zone 5b, the first coagulation area 5a and first Settling zone 5b tops are communicated, and the first rabbling mechanism 5c are provided with the first coagulation area, the first sludge is arranged at the first settling zone 5b bottom Struggled against 5d, and sludge bucket 5d bottoms are communicated provided with mud mouth 5e, the first coagulation area 5a with coagulant dosage component, and first coagulation sinks The wastewater outlet of the first settling zone 5b in shallow lake pond 5 is communicated with the water inlet of Fenton reactor 6；In operation, mixed to entering first Dosing coagulant in coagulation zone 5a waste water, coagulation is carried out with waste water, is removed phosphate, colloid pollutant in waste water, is entered one Step removes the pollutants such as COD, SS, colourity, and the waste water after being handled through the first coagulation area 5a enters after the first settling zone 5b, real Supernatant in existing separation of solid and liquid, the first settling zone 5b enters Fenton reactor 6, is deposited in the sludge row in the first sludge bucket 5d Enter the mud storage pool 9 set in addition.Coagulant can be using molysite, aluminium salt or high polymer coagulant etc.；In this example, the first coagulating sedimentation Pond is prior art construction, adds trivalent iron salt work in the water inlet pipe of the first coagulation area 5a by pipe-line mixer component For coagulant, in embodiment, waste water is that inclined tube is provided with 20min, the first settling zone 5b in the first coagulation area 5a reaction time Component is precipitated, waste water is 1m in settling zone 5b hydraulic surface loading3/m2.h.Water outlet after being handled through the first coagulative precipitation tank 5 COD ＜ 300mg/L, BOD550 times of ＜ 150mg/L, TP ＜ 6mg/L, SS ＜ 50mg/L, colourity ＜.
Gas Stirring component 6a is provided with the Fenton reactor 6, the inner chamber of Fenton reactor 6 adds component and sweet smell with sulfuric acid The reagent that pauses adds component and communicated；Waste water is contacted in the Fenton reactor 6 under acid pH environment with Fenton reagent Reaction, further reduces COD, BOD in waste water5, the coloured groups in waste water are destroyed, and are that follow-up second coagulative precipitation tank has The colourity of effect reduction waste water creates conditions；In operation, component is added into the water inlet pipe of Fenton reactor 6 by sulfuric acid and adds sulphur Acid, the pH value of waste water entered in Fenton reactor 6 is adjusted to acidity, into the waste water in Fenton reactor 6 and the sweet smell added The reagent that pauses carries out the organic pollutant of the difficult for biological degradation in haptoreaction, waste water in Fenton reagent under acid ph value environment Strong oxidation under be oxidized, macromolecular is changed into small molecule, it is easy to biochemical degradation, and the biodegradability of waste water is improved, while portion It is inorganic matter by exhaustive oxidation to divide organic matter, further COD, BOD in reduction waste water5, meanwhile, the coloured groups quilt in waste water Destruction, is that the colourity that follow-up second coagulative precipitation tank effectively reduces waste water creates conditions；Fenton reactor is existing, and waste water exists Reaction time (hydraulic detention time) in Fenton reactor 6 is 1~2 hour, hydrogen peroxide and ferrous ion in Fenton reagent Mol ratio be 1~3:1, the dosage of the Fenton reagent COD concentration in water inlet is determined.In this example：Fenton reactor size For φ 2m × 3m, reaction time (hydraulic detention time) of the waste water in Fenton reactor 6 is about 1.5 hours, mixed by pipeline Clutch adds sulfuric acid, sets pH value Detection ＆ Controling instrument to automatically control dosage, the pH value of waste water is adjusted into 3~5, added The mol ratio of hydrogen peroxide and ferrous ion is 1.5 in Fenton reagent:1.Water outlet COD ＜ after being handled through Fenton reactor 6 200mg/L, BOD5＜ 50mg/L.
Second coagulative precipitation tank 7 includes the second coagulation area 7a and the second settling zone 7b, the second coagulation area 7a and second Settling zone 7b tops are communicated, the second coagulation area 7a phases of the wastewater outlet of the Fenton reactor 6 and the second coagulative precipitation tank 7 Logical, the second settling zone 7b tops delivery port of the second coagulative precipitation tank 7 is communicated with the top of BAF 8, and second mixes The second agitating member 7c is provided with coagulation zone 7a, the second sludge bucket 7d is arranged at the first settling zone 7b bottoms, and the second sludge bucket 7d bottoms have Mud mouth 7e, the second coagulation area 7a add component with alkali and communicated；Waste water carries out coagulating sedimentation under pH neutral environment, 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 the second coagulation area 7a, the pH value of waste water is adjusted to iron in neutrality, waste water In coagulation area coagulation process occurs for ion in neutral conditions, forms water insoluble iron hydroxide, ferric phosphate flco, removes useless Iron ion and TP in water, while flocculation can further remove COD, SS, colourity and other pollutants in waste water；Through institute State the waste water after the second coagulation area 7a processing and enter the second described settling zone 7b, realize in separation of solid and liquid, the second settling zone 7b Supernatant enter BAF 8；Alkali can be using sodium hydroxide, calcium oxide, calcium hydroxide etc.；In this example, the second coagulation Sedimentation basin 7 is the coagulative precipitation tank of existing structure, by pipe-line mixer component in the water inlet pipe of the second coagulation area 7a The species for adding alkali is NaOH, sets pH value Detection ＆ Controling instrument to automatically control the dosage of aqueous slkali, will enter the second coagulation Area 7a pH value of waste water is adjusted to 7~8 i.e. neutral, and in embodiment, waste water is 20min in the second coagulation area 7a reaction time, Tube settling component is provided with the second settling zone 7b, waste water is 1m in the second settling zone 7b hydraulic surface loading3/m2.h, Water outlet after being handled through the second coagulative precipitation tank, COD ＜ 150mg/L, BOD5＜ 50mg/L, TP ＜ 0.5mg/L, SS ＜ 50mg/ 40 times of L, colourity ＜, is deposited in sludge in the second sludge bucket 7d and is discharged into the mud storage pool 9 set in addition.
The intracavity bottom of BAF 8 is provided with aeration component 8a, and there are biological filter bed of material 8b, aeration and biological filter in middle part Delivery port is arranged at the bottom of pond 11；BAF 8 carries out biological and physical treatment to waste water, and waste water fully connects with microbial film Touch, the organic matter in degrading waste water simultaneously carries out nitration denitrification denitrogenation, while carrying out the filtering and absorption of filtrate, further remove COD, BOD in waste water5、TN、NH3-N、SS；Biological filter bed of material b filtrate can use ceramic grain filter, granular activated carbon filtrate Or other similar filtrates；In operation, aeration component provides air by compressed air source unit and is aerated；In this example, BAF For the BAF of existing structure, using ceramic grain filter, 3~4m/h of filtering velocity, the water outlet dissolved oxygen of BAF is not Higher than 5mg/L, BAF is periodically backwashed using its water outlet, the water outlet after being handled through BAF, COD ＜ 100mg/L, BOD5＜ 20mg/L, TP ＜ 0.5mg/L, NH3- N ＜ 10mg/L, vegetable and animals oils ＜ 10mg/L, SS ＜ 40mg/L, 40 times of colourity ＜.
Discharged wastewater met the national standard after the processing of BAF 8；When needing, sterilization pool is set, the sterilization pool Water inlet is communicated with the delivery port of the bottom of BAF 8, and the waste water after the processing of BAF 8 disappears described in Discharged after disinfecting in malicious pond；The present embodiment sets sterilization pool, and the waste water after the processing of BAF 8 enters the sterilization pool Discharged after sterilization, disinfectant can be used as disinfectant in implementation using chlorine dioxide, ozone, bleaching powder etc. using chlorine dioxide.
In specific implementation, separately disposed after device for dehydrating sladge waste processing of the sludge through setting in addition in mud storage pool 9；Sludge Dehydration equipment can be using centrifugal dehydrator or belt type dewaterer etc., the sludge outward transport after dehydration.
After waste water is handled through apparatus of the present invention, 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 ".

Claims (6)

1. kitchen garbage fermentation waste water processing unit, it is characterized in that：
Including oil removal preliminary sedimentation tank (1), regulating reservoir (2), A/O biochemical treatment apparatus (3), sedimentation basin (4), the first coagulative precipitation tank (5), Fenton reactor (6), the second coagulative precipitation tank (7), BAF (8)；
Oil slick baffle plate (1a) is arranged at oil removal preliminary sedimentation tank (1) top, and mud chamber (1b) is arranged at bottom, and mud chamber (1b) bottom has Sludge outlet, the wastewater outlet of oil removal preliminary sedimentation tank (1) is communicated with the regulating reservoir (2)；
Waste water water, water quality are adjusted the regulating reservoir (2)；
The A/O biochemical treatment apparatus (3) includes anoxic zone (3a) and aerobic zone (3b), on anoxic zone (3a) and aerobic zone (3b) Portion is communicated, and the delivery port of the regulating reservoir (2) is communicated with the anoxic zone (3a) of A/O biochemical treatment apparatus (3), A/O biochemical treatments The aerobic zone (3b) of device (3) is communicated with the sedimentation basin (4)；
Storage mud chamber (4a) is arranged at sedimentation basin (4) bottom, and sludge outlet is arranged at storage mud chamber (4a) bottom；
First coagulative precipitation tank (5) include the first coagulation area (5a) and the first settling zone (5b), the first coagulation area (5a) and First settling zone (5b) top is communicated, and the first coagulation area (5a) communicates with the delivery port on the sedimentation basin (4) top, and first The first rabbling mechanism (5c) is provided with coagulation area (5a), the first sludge bucket (5d), the first sludge are arranged at the first settling zone (5b) bottom Mud mouth is arranged at bucket (5d) bottom, and the first coagulation area (5a) is communicated with coagulant dosage component, first coagulative precipitation tank (5) The wastewater outlet of first settling zone (5b) is communicated with Fenton reactor (6)；
Be provided with Gas Stirring component (6a) in the Fenton reactor (6), Fenton reactor (6) inner chamber and sulfuric acid add component and Fenton reagent adds component and communicated；
Second coagulative precipitation tank (7) include the second coagulation area (7a) and the second settling zone (7b), the second coagulation area (7a) and Second settling zone (7b) top is communicated, and the second rabbling mechanism (7c), the second settling zone are provided with the second coagulation area (7a) Second sludge bucket (7d) is arranged at (7b) bottom, and mud mouth is arranged at the second sludge bucket (7d) bottom, and the second coagulation area (7a) adds structure with alkali Part is communicated, and the wastewater outlet of the Fenton reactor (6) is communicated with the second coagulation area (7a) of the second coagulative precipitation tank (7), the The second settling zone (7b) the top delivery port of two coagulative precipitation tanks (7) is communicated with the BAF (8) top；
BAF (8) intracavity bottom is provided with aeration component (8a), and there are the biological filter bed of material (8b), aeration and biological in middle part Delivery port is arranged at filter tank (8) bottom.
2. according to the kitchen garbage fermentation waste water processing unit described in claim 1, it is characterized in that：Sterilization pool is set, it is described to disappear The water inlet in malicious pond is communicated with the delivery port of the BAF (8) bottom.
3. according to the kitchen garbage fermentation waste water processing unit described in claim 1 or 2, it is characterized in that：In A/O biochemical treatments dress Put in (3), provided with the muddy water mixed solution in the aerobic zone (3b) is flowed back in the backflow pipe fitting (3c) of anoxic zone (3a), flow back Pipe fitting (3c) is provided with the first reflux pump (3d).
4. according to the kitchen garbage fermentation waste water processing unit described in claim 1 or 2, it is characterized in that：Provided with by the precipitation The return duct that the partial sludge mixture of pond (4) bottom storage mud intracavitary flows back in A/O biochemical treatment apparatus in anoxic zone (3a) (4b), return duct (4b) is provided with the second reflux pump (4c).
5. according to the kitchen garbage fermentation waste water processing unit described in claim 1 or 2, it is characterized in that：At A/O biochemistry When managing device (3) interior muddy water mixed solution temperature and being less than 20 DEG C, provided with by the interior muddy water mixed solution of the A/O biochemical treatment apparatus (3) Temperature rises to 20~35 DEG C of heater.
6. according to the kitchen garbage fermentation waste water processing unit described in claim 1 or 2, it is characterized in that：At A/O biochemistry When managing device (3) interior muddy water mixed solution temperature and being higher than 35 DEG C, provided with by the interior muddy water mixed solution of the A/O biochemical treatment apparatus (3) Temperature is down to 20~35 DEG C of cooling device.
CN201710684248.8A 2017-08-11 2017-08-11 Kitchen garbage fermentation waste water processing unit Pending CN107311403A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111847809A (en) * 2019-12-30 2020-10-30 重庆大学 Kitchen waste fermentation wastewater treatment device and method
CN113943082A (en) * 2021-11-08 2022-01-18 中机国际工程设计研究院有限责任公司 Kitchen waste wastewater treatment system

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105819625A (en) * 2016-05-09 2016-08-03 中国科学院生态环境研究中心 Tanning synthetic wastewater treatment system and treatment method
CN106396282A (en) * 2016-11-21 2017-02-15 中机国际工程设计研究院有限责任公司 Kitchen waste paste anaerobic fermentation wastewater treatment device
CN106430845A (en) * 2016-11-21 2017-02-22 中机国际工程设计研究院有限责任公司 Kitchen garbage wastewater treatment apparatus
CN106746174A (en) * 2016-11-21 2017-05-31 中机国际工程设计研究院有限责任公司 A kind of kitchen garbage slurry anaerobic fermentation method of wastewater treatment
CN106746175A (en) * 2016-11-21 2017-05-31 中机国际工程设计研究院有限责任公司 A kind of kitchen garbage, waste-water processing method
CN207259332U (en) * 2017-08-11 2018-04-20 中机国际工程设计研究院有限责任公司 A kind of kitchen garbage fermentation waste water processing unit

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105819625A (en) * 2016-05-09 2016-08-03 中国科学院生态环境研究中心 Tanning synthetic wastewater treatment system and treatment method
CN106396282A (en) * 2016-11-21 2017-02-15 中机国际工程设计研究院有限责任公司 Kitchen waste paste anaerobic fermentation wastewater treatment device
CN106430845A (en) * 2016-11-21 2017-02-22 中机国际工程设计研究院有限责任公司 Kitchen garbage wastewater treatment apparatus
CN106746174A (en) * 2016-11-21 2017-05-31 中机国际工程设计研究院有限责任公司 A kind of kitchen garbage slurry anaerobic fermentation method of wastewater treatment
CN106746175A (en) * 2016-11-21 2017-05-31 中机国际工程设计研究院有限责任公司 A kind of kitchen garbage, waste-water processing method
CN207259332U (en) * 2017-08-11 2018-04-20 中机国际工程设计研究院有限责任公司 A kind of kitchen garbage fermentation waste water processing unit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111847809A (en) * 2019-12-30 2020-10-30 重庆大学 Kitchen waste fermentation wastewater treatment device and method
CN113943082A (en) * 2021-11-08 2022-01-18 中机国际工程设计研究院有限责任公司 Kitchen waste wastewater treatment system

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Application publication date: 20171103