CN106430845A - Kitchen garbage wastewater treatment apparatus - Google Patents

Kitchen garbage wastewater treatment apparatus Download PDF

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Publication number
CN106430845A
CN106430845A CN201611020738.XA CN201611020738A CN106430845A CN 106430845 A CN106430845 A CN 106430845A CN 201611020738 A CN201611020738 A CN 201611020738A CN 106430845 A CN106430845 A CN 106430845A
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China
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waste water
water
waste
sedimentation tank
ammonia
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蒋剑虹
唐清畅
罗友元
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China Machinery International Engineering Design & Research Institute Co Ltd
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China Machinery International Engineering Design & Research Institute Co Ltd
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Priority to CN201611020738.XA priority Critical patent/CN106430845A/en
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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00Multistage treatment of water, waste water, or sewage
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/20Treatment of water, waste water, or sewage by degassing, i.e. liberation of dissolved gases
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/40Devices for separating or removing fatty or oily substances or similar floating material
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/50Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/52Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/66Treatment of water, waste water, or sewage by neutralisation; pH adjustment
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/72Treatment of water, waste water, or sewage by oxidation
    • C02F1/78Treatment of water, waste water, or sewage by oxidation with ozone
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00Nature of the contaminant
    • C02F2101/10Inorganic compounds
    • C02F2101/105Phosphorus compounds
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00Nature of the contaminant
    • C02F2101/10Inorganic compounds
    • C02F2101/16Nitrogen compounds, e.g. ammonia
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00Nature of the contaminant
    • C02F2101/30Organic compounds
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00Controlling or monitoring parameters in water treatment
    • C02F2209/06Controlling or monitoring parameters in water treatment pH
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00Controlling or monitoring parameters in water treatment
    • C02F2209/08Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00Controlling or monitoring parameters in water treatment
    • C02F2209/10Solids, e.g. total solids [TS], total suspended solids [TSS] or volatile solids [VS]
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00Controlling or monitoring parameters in water treatment
    • C02F2209/14NH3-N
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00Controlling or monitoring parameters in water treatment
    • C02F2209/15N03-N
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00General aspects of water treatment
    • C02F2301/04Flow arrangements
    • C02F2301/046Recirculation with an external loop
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00General aspects of water treatment
    • C02F2301/08Multistage treatments, e.g. repetition of the same process step under different conditions
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/02Aerobic processes
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/30Aerobic and anaerobic processes
    • C02F3/302Nitrification and denitrification treatment
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/30Aerobic and anaerobic processes
    • C02F3/308Biological phosphorus removal

Abstract

A kitchen garbage wastewater treatment apparatus is provided; wastewater is treated successively through an oil-isolating primary settling tank (1), an adjusting tank (2), a first pH adjusting tank (3), an ammonia stripping tower (4), a second pH adjusting tank (5), an A/O biochemical treatment device (6), a settling tank (7), an ozone reactor (8), an aerating biofilter (9), and a sterilizing tank (10); at the premise of removing the pollutants in wastewater, such as COD, BOD5 and SS, it is possible to effectively remove TN and TP and effectively reduce wastewater chroma, and TN and TP removal rate is increased; all the pollutants in the treated wastewater, such as COD, BOD5, TN, NH3-N, TP and chroma, may stably meet the requirements provided in 'level III standard' of Integrated Wastewater Discharge Standard (GB8978-1996) and the requirements of 'level B' standard of Wastewater Quality Standards for Discharge to Municipal Sewers (GB/T 31962-2015).

Description

Kitchen garbage, waste-water processing meanss
Technical field
The present invention relates to a kind of kitchen garbage, waste-water processing meanss, and in particular to a kind of changing food waste slurry anaerobic fermentation takes off Waste water after water, and changing food waste processes the wastewater produced processing meanss of other operations, belongs to sewage treatment area.
Background technology
Waste water after the dehydration of changing food waste slurry anaerobic fermentation, and changing food waste processes the waste water that other operations are produced, Waste component complexity, belongs to the big high concentrated organic wastewater of intractability.Pollutants in Wastewater concentration height, COD (COD, 8000~20000mg/L), Biochemical oxygen demand (BOD5, 4000~8000mg/L, total nitrogen (TN, 2000~3000mg/L), ammonia nitrogen (NH3- N, 1500~2500mg/L), total phosphorus (TP, 50~150mg/L), float (SS,>8000mg/L), salinity (15000 ~30000mg/L), vegetable and animals oils (800~1500mg/L), colourity (300~800 times).Cellulose, protein in waste water, The refractory organic such as lipid matter institute accounting is big, its carbon-nitrogen ratio (BOD5:TKN) low, only 2:1~3:1, the carbon nitrogen of waste water Than the low effective removal for being unfavorable for total nitrogen.
Kitchen waste water process at present mainly using anaerobic bio-treated, Aerobic biological process and membrane technology process etc. several or The processing meanss of multiple unit combinations.Waste water should reach after treatment《Integrated wastewater discharge standard (GB8978-1996)》In " three Level standard " is and more strict《Sewage enters town sewer water standard》" B level " standard in (GB/T 31962-2015).
Have in existing processing meanss a kind of by " pretreatment unit+anaerobic processing device+aerobic treatment device+flocculation is sunk The processing meanss that shallow lake pond " combines, its deficiency is:One is that anaerobic treatment unit operational management has high demands, especially at anaerobism Reason device consumes the carbon source in waste water in running, makes carbon-nitrogen ratio in waste water decline (COD, BOD further5Reduce, ammonia nitrogen Raise), the reduction of carbon-nitrogen ratio is less useful for the biological denitrificaion of waste water;Second, the ammonia nitrogen in waste water mainly occurs in aerobic stage Nitration reaction and be converted into nitrate nitrogen and nitrite nitrogen, due to carbon-nitrogen ratio (BOD5:TKN) relatively low state is being in originally Lower reduced again, cause carbon source to lack, because of no sufficient carbon source, it is impossible to complete denitrification denitrogenation, then total nitrogen fails effective degraded With removal, nitrogen removal rate is low, it is difficult to reach《Sewage enters town sewer water standard》" B in (GB/T 31962-2015) The requirement of level " standard.
There is one kind in prior art by " pretreatment unit+anaerobic processing device+aerobic treatment device+reverse osmosis membrane mistake The processing meanss that filter device etc. " is combined, its deficiency is, one be anaerobic treatment unit with above-mentioned processing meanss in anaerobism at Reason unit there is a problem of same;Two is advanced treating of the reverse osmosis membrane filtration device as end, although can meet《Sewage Enter town sewer water standard》The requirement of " B level " standard, its defect be the oils and fatss in waste water be easily caused reverse osmosis membrane block up Plug, the 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 dress It is a kind of physical filtering device to put, and simply retains the pollutant in waste water, pollutant is not really degraded, is produced Raw a large amount of concentrated solutions need to separately carry out the process of complex process, be easily caused secondary pollution, and operating cost is higher.
Content of the invention
For the deficiencies in the prior art, the present invention provides a kind of kitchen garbage, waste-water processing meanss, i.e. changing food waste slurry Waste water and the wastewater produced processing meanss of other operations of changing food waste processing procedure after anaerobic fermentation dehydration, this device is full While foot effectively removes the pollutant such as COD, BOD, SS in waste water, TN, NH can be effectively removed3- N, TP and effectively reduction waste water Colourity, and improve TN, NH3- N, the clearance of TP, COD, BOD in the waste water after process5、TN、NH3The pollutant such as-N, TP, colourity Can all stably reach《Integrated wastewater discharge standard》(GB8978-1996) " grade III Standard " and《Sewage enters town sewer water Matter standard》The requirement of (GB/T 31962-2015) " B level ".
Technical scheme is as follows:
Referring to accompanying drawing, including oil removal preliminary sedimentation tank 1, regulating reservoir 2, the first pH regulator pond 3, Ammonia blowing-out tower 4, the second pH regulator pond 5th, A/O biochemical treatment apparatus 6, sedimentation tank 7, ozone reactor 8, BAF 9, sterilization pool 10;
Oil slick baffle plate 1a is arranged at 1 top of oil removal preliminary sedimentation tank, 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 process to waste water, removes big Partial suspended thing SS;
The regulating reservoir 2 is communicated with the first pH regulator pond 3, and regulating reservoir 2 is adjusted to the waste water water yield, water quality;
There is the first rabbling mechanism 3a in the first pH regulator pond 3, the first pH regulator pond (3) inner chamber is simultaneously thrown with alkali (NaOH) Plus component is communicated, the first pH regulator pond 3 carries out first time regulation to the pH value of waste water, makes the form of ammonia nitrogen in waste water by NH4 +Turn Turn to free ammonia (NH3), it is effectively to remove ammonia nitrogen in follow-up Ammonia blowing-out tower processing procedure to provide advantage;
Offgas outlet 4a is arranged at 4 top of the Ammonia blowing-out tower, and air intlet 4b is arranged at bottom, and 4 inner chamber top of Ammonia blowing-out tower has joins Water component 4c, the waste water inlet of water distribution component 4c is communicated with the first pH regulator pond 3, the wastewater outlet of Ammonia blowing-out tower 4 and Two pH regulator ponds 5 communicate, and waste water is processed through Ammonia blowing-out tower, is realized stripping and the removal of free ammonia, is made the carbon-nitrogen ratio in waste water (BOD5:TKN) improve, be that the biological denitrificaion of follow-up A/O biochemical treatment apparatus provides suitable carbon-nitrogen ratio condition;
Have the second rabbling mechanism 5a in the second pH regulator pond 5, the second pH regulator pond (5) inner chamber and with sulphuric acid (H2SO4) Add component to communicate, the second pH regulator pond 5 is communicated with the anoxic zone 6a in the A/O biochemical treatment apparatus 6, the second pH regulator pond Second regulation is carried out to the pH value of waste water, the suitable growing environment of microorganism is formed, is the life of follow-up A/O biochemical treatment apparatus Change to process and necessary environment is provided;
Aerobic zone 6b in the A/O biochemical treatment apparatus 6 is communicated with the sedimentation tank 7, A/O biochemical treatment apparatus 6 pairs Waste water carries out biochemical treatment, effectively removes most COD, BOD5, remove NH further3- N, TN, effectively remove TP;
7 bottom You Zhuni chamber 7a of the sedimentation tank, there is sludge outlet in storage mud chamber, and 7 top of sedimentation tank is anti-with the ozone The waste water inlet of device 8 is answered to communicate, waste water removes SS and TP further through 7 precipitation process of sedimentation tank;
There are ozone valve actuating mechanism 8a, the wastewater outlet of ozone reactor 8 and the aeration and biological in the ozone reactor 8 The bottom in filter tank 9 communicates, and waste water carries out haptoreaction with ozone in the ozone reactor 8, reduces in waste water further COD、BOD5, coloured groups in waste water are destroyed, and the colourity of waste water effectively reduces;
9 inner chamber bottom of the BAF is provided with aeration component 9a, and there is biological filter bed of material 9b at middle part, and aeration and biological is filtered 9 top of pond is communicated with the sterilization pool 10, and BAF 9 is carried out a biological disposal upon to waste water, is eliminated in waste water further COD, BOD5、TN、NH3- N, while realize the removal to remaining SS;
The sterilization pool 10 to waste water disinfection, sterile-processed rear discharged wastewater met the national standard.
Compared with the prior art, the invention has the characteristics that and technique effect:
1st, in the present invention, a kind of new processing unit is combined as using " the first pH regulator pond+Ammonia blowing-out tower ", in a pH PH value in regulating reservoir to waste water carries out first time regulation, makes the form of ammonia nitrogen in waste water from NH4 +It is converted into free ammonia (NH3), The free ammonia for effectively removing for follow-up Ammonia blowing-out tower processing procedure in waste water provides favourable technical conditions, at Ammonia blowing-out tower Pass through liquid gas mass transport process in reason, inverted free ammonia then switchs to gas phase by liquid phase and becomes ammonia-containing exhaust and discharge, So as to realize effective removal of the Ammonia blowing-out tower to part free ammonia in waste water, it is to realize effectively removing TN, NH3- N and raising TN, NH3The purpose of-N clearance establishes good basis.
2nd, in the present invention, described " the+the second pH regulator of Ammonia blowing-out tower pond+A/O biochemical treatment apparatus " are constituted another innovation Processing unit, the free ammonia in waste water is effectively removed by the process due to the Ammonia blowing-out tower, is effectively improved in waste water Carbon-nitrogen ratio, provide suitable carbon-nitrogen ratio condition so as to the biological denitrificaion for follow-up A/O biochemical treatment apparatus, after ammonia aeration is processed Waste water enter in the second pH regulator pond second regulation carried out to the pH value of waste water, define the suitable growth ring of microorganism again Border;
Process due to Ammonia blowing-out tower provides suitable carbon-nitrogen ratio condition for the biological denitrificaion of A/O biochemical treatment apparatus, right The pH value of waste water carries out second regulation and defines 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 effectively can 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, 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 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, it is achieved that effectively denitrogenation;Meanwhile, the micro- life in activated sludge Thing (polyP bacteria) absorbs phosphorus in metabolic processes, forms Quadrafos and is stored in described microorganism (polyP bacteria) in vivo, Phosphorus in waste water is effectively removed.
3rd, follow-up sedimentation tank in the present invention, ozone reactor, BAF combine structure with aforementioned processing unit Become overall new departure that the present invention is processed to waste water, the base of corresponding effectively treatment effect has been obtained in aforementioned processing unit On plinth, in the sedimentation tank of sedimentation tank is processed, the SS in waste water and TP is eliminated further;Ozone reaction in ozone reactor In, reduce further COD, the BOD in waste water5With the colourity for effectively reducing waste water;Biological treatment in BAF In, remove COD, BOD further5、TN、NH3- N, while remove the SS for remaining in waste water.Make processed by the invention after waste water in COD、BOD5、TN、NH3The pollutant such as-N, TP, colourity can all be stably reached《Integrated wastewater discharge standard》(GB8978-1996) " grade III Standard " and《Sewage enters town sewer water standard》The requirement of (GB/T 31962-2015) " B level ", so as to avoid Using the defect existing for reverse osmosis membrane processing technique.
4th, the front-end processing unit of " oil partiting precipitation pool+regulating reservoir ", i.e. waste water elder generation to be processed are employed in the present invention By oil partiting precipitation pool, oil removal precipitation process is carried out to waste water, then by regulating reservoir, waste water is adjusted processing, with conventional elder generation Be adjusted processing by regulating reservoir, after carry out the mode ratio of oil removal precipitation process, oils and fatss can be avoided in the accumulation of the regulating reservoir water surface and Large granular impurity and float sink to regulating reservoir at the bottom of pond under gravity, it is to avoid the frequent cleaning of regulating reservoir, are conducive to carrying High working performance.
With reference to specific embodiment, the present invention is further described.
Description of the drawings
Accompanying drawing 1 is the structural representation of the present invention.
Specific embodiment
Referring to accompanying drawing, with treatment scale as 100m3As a example by the kitchen garbage, waste-water of/d, specific embodiment is as follows:
Waste water and changing food waste after the dehydration of changing food waste slurry anaerobic fermentation processes the waste water quality that other operations 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 present invention include oil removal preliminary sedimentation tank 1, regulating reservoir 2, the first pH regulator pond 3, Ammonia blowing-out tower 4, the second pH regulator pond 5, A/O biochemical treatment apparatus 6, sedimentation tank 7, ozone reactor 8, BAF 9, sterilization pool 10.
Oil slick baffle plate 1a is arranged at 1 top of oil removal preliminary sedimentation tank, 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 process 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 in freedom and is floated on waste water The oil slick of layer, the oil slick of retention is periodically removed using corresponding device, and the large granular impurity in waste water and bulky grain float exist The sludge bucket of oil removal preliminary sedimentation tank bottom is deposited in the presence of gravity, and the sludge of precipitation is by the sludge outlet 1c on sludge bucket 1b Discharge, realize the removal of most suspended substances SS;In being embodied as, the storage in addition arranging is entered by the sludge that sludge bucket 1b is discharged In mud sump 11;The wastewater outlet of the oil removal preliminary sedimentation tank 1 is connected by pipe fitting or pocket member with regulating reservoir 2.
The regulating reservoir 2 is adjusted to the water yield of waste water, water quality, is beneficial to the stable operation of subsequent treatment operation, is adjusted Section pond 2 is communicated with the first pH regulator pond 3;
The oil removal preliminary sedimentation tank and regulating reservoir can adopt armored concrete cell body or carbon steel anticorrosion equipment cell body, this example Oil removal preliminary sedimentation tank size:5m × 2m × 3m (depth), regulating reservoir dischargeable capacity 100m3.After processing through oil removal preliminary sedimentation tank and regulating reservoir, SS < 2000mg/L, the vegetable and animals oils < 300mg/L of waste water.
Have the first rabbling mechanism 3a in the first pH regulator pond 3,3 inner chamber of the first pH regulator pond and with alkali (NaOH) solution Add component to communicate, the first pH regulator pond 3 carries out first time regulation to the pH value of waste water, the pH value of waste water is adjusted to 10.5~ 12, under the pH value, the form of ammonia nitrogen in waste water is made by NH4 +It is converted into free ammonia (NH3), it is follow-up Ammonia blowing-out tower processing procedure In effectively remove ammonia nitrogen advantage be provided;In operation, NaOH is added into pond and is stirred mixing, realize to pH value of waste water First time adjust;First pH regulator, 3 pool size of this example is 1.5m × 1.5m × 1.5m (depth), configures pH value detector and control Instrument processed automatically controls the dosage of aqueous slkali.
Offgas outlet 4a is arranged at 4 top of the Ammonia blowing-out tower, and air intlet 4b is arranged at bottom, and 4 inner chamber top of Ammonia blowing-out tower has joins Water component 4c, the waste water inlet of water distribution component 4c is communicated with the first pH regulator pond 3, and waste water is processed 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 second pH regulator pond 5;The ammonia Packing layer 4f is provided with the middle part of 4 inner chamber of stripping tower, waste water is showered on filler by top and forms drops through water distribution component 4c water distribution State falls along filler.In operation, the waste water after processing through the first pH regulator pond enters the water distribution component 4c of Ammonia blowing-out tower internal upper part, Through water distribution component water distribution, waste water becomes water droplet state to land from top to bottom, and air is entered by the air intlet 4b of Ammonia blowing-out tower bottom, Gas liquid ratio is 2500~3500:1, and blowed by the bottom up of Ammonia blowing-out tower inner chamber, the air-flow of rising is useless with even drop down Water is fully contacted, and by liquid gas mass transport process, free ammonia then switchs to gas phase by liquid phase and becomes ammonia-containing exhaust and by tail gas Outlet 4a discharge, as 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 as to suitable carbon-nitrogen ratio condition be provided for follow-up biological denitrificaion, be beneficial to follow-up A/O biochemical treatment dress The Nitrogen removal effect that puts, in this example:Gas liquid ratio is 3000:1, in waste water, carbon-nitrogen ratio is improved to 5:1~6:1, ammonia nitrogen removal frank More than 60% is reached, the ammonia nitrogen < 800mg/L in waste water after processing through ammonia aeration;The first pH regulator pond 3 and the water distribution Waste water inlet on component 4c arranges delivery pump 4e by conveying pipe fitting 4d connection, conveying pipe fitting 4d;The Ammonia blowing-out tower 4 useless Water out is connected by pipe fitting or other components with the second pH regulator pond 5.In being embodied as, by offgas outlet 4a discharge containing ammonia Tail gas can be processed using respective handling device exhaust absorption tower, using dilute sulfuric acid as ammonia absorbing liquid, tail containing ammonia Gas with enter tail gas absorber in absorbing liquid contact and produce chemical reaction generation ammonium sulfate, the ammonia in ammonia-containing gas from Gas is transferred in absorbing liquid, the tail gas qualified discharge after absorption, absorbing liquid (ammonium sulfate) can as agricultural fertilizer or other Purposes.
Have the second rabbling mechanism 5a in the second pH regulator pond 5,5 inner chamber of the second pH regulator pond and with sulphuric acid (H2SO4) molten Liquid adds component and communicates, and the second pH regulator pond carries out second regulation to the pH value of waste water, the pH value of waste water is adjusted to 7.0~ 8.5, the suitable growing environment of microorganism is formed, is biochemical treatment offer necessity environment of follow-up A/O biochemical treatment apparatus, second PH regulator pond 5 is communicated with the anoxic zone 6a in A/O biochemical treatment apparatus 6;In operation, sulfuric acid solution is added into pond and is stirred Mixing is mixed, realizes carrying out the pH value of waste water second regulation, configuration pH value Detection & Controling instrument automatically controls sulfuric acid solution Dosage;In this example, the second pH regulator pool size:1.5m × 1.5m × 1.5m (depth).The wastewater outlet of the Ammonia blowing-out tower 4 leads to The waste water inlet for pipe fitting or other components being crossed with the second pH regulator pond is connected.The second pH regulator pond 5 is by pump 5b and accordingly Pipe fitting is communicated with the anoxic zone 6a in A/O biochemical treatment apparatus 6.
The A/O biochemical treatment apparatus 6 carry out biochemical treatment to waste water, effectively remove most COD, BOD5, further Ammonia nitrogen, TN is removed, effectively removes the phosphorus in waste water, the aerobic zone 6b in the A/O biochemical treatment apparatus 6 and the sedimentation tank 7 Communicate;In operation, (dissolved oxygen is the micro- life in 1.5~2.5mg/L) interior activated sludge to 6 aerobic zone 6b of A/O biochemical treatment apparatus Thing can effectively carry out metabolism (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 improve in ammonia aeration processing procedure, the carbon in waste water Source is enriched, and the denitrifying bacterium in 6 anoxic zone 6a of A/O biochemical treatment apparatus (dissolved oxygen is 0.2~0.5mg/L) consumes carbon source and going Except COD, BOD in waste water5While, nitrate nitrogen and cultured water are converted into nitrogen, are removed ammonia nitrogen, TN further, pass through Nitrification-denitrification reaction, realizes effective denitrogenation, meanwhile, the polyP bacteria (microorganism) in activated sludge is in metabolic processes Phosphorus is absorbed, is formed Quadrafos and the internal of polyP bacteria (microorganism) is stored in, effectively remove the phosphorus (biological phosphate-eliminating) in waste water;Institute The muddy water mixed solution that states in 6 aerobic zone 6b of A/O biochemical treatment apparatus is flowed back in the anoxic zone 6a by backflow member 6c, is formed " internal reflux ", it is 300%~400% that reflux ratio is 200%~500%, the internal reflux ratio in this example.Waste water is given birth in the A/O It is 10~20 days to change the total hrt in processing meanss 6, wherein anoxic zone 4~6 days, aerobic zone 6~15 days, this example In, total hrt is 17 days, wherein anoxic zone 4 days, aerobic zone 13 days.In this example, the A/O biochemical treatment apparatus are The anaerobic-aerobic activated sludge process sewage disposal of existing anaerobic-aerobic activated sludge process sewage-treatment plant or existing structure Pond, is made up of anoxic zone, aerobic zone and backflow member, valve, pipeline, rabbling mechanism, aeration mechanism etc., and a size of 20m × 20m × 5m (depth).Water outlet COD < 700mg/L, BOD after processing through A/O biochemical treatment apparatus5< 200mg/L, NH3- N < 30mg/L, TN < 80mg/L.
7 bottom You Zhuni chamber 7a of the sedimentation tank, there is sludge outlet in storage mud chamber, and waste water enters through sedimentation tank precipitation process One step removes the SS in waste water and TP, and 7 top of sedimentation tank is communicated with the waste water inlet of ozone reactor 8;In operation, waste water is heavy Mud-water separation is realized in shallow lake pond 7, remove SS further, while aluminium salt or iron salt is added into sedimentation tank carries out chemical dephosphorization, TP in waste water is removed further, and the sludge for being precipitated is by the sludge outlet discharge for storing mud chamber 7a, the aluminium salt or iron salt Dosage be 20~100mg/L, in this example adopt aluminium salt, dosage be 60~80mg/L, in being embodied as, dense according to waste water The change of degree can adjust the dosage of aluminium salt or iron salt;The partial sludge of 7 bottom of sedimentation tank storage mud intracavity is by backflow In the anoxic zone 6a that device 7b is flowed back in A/O biochemical treatment apparatus, return sludge ratio is 50~100%, for maintaining A/O to give birth to Change the activated sludge concentration of processing meanss;Waste water SS < 100mg/L, TP < 6mg/L after processing through sedimentation tank.It is embodied as In, the excess sludge for storing mud intracavity is then entered in the mud storage pool 11 of other setting by the sludge outlet 7a in storage mud chamber.
There is ozone valve actuating mechanism 8a in the ozone reactor 8, waste water is connect with ozone in the ozone reactor 8 Reaction is touched, reduces COD, BOD in waste water further, the coloured groups in waste water are destroyed, and the colourity of waste water effectively reduces, institute The wastewater outlet for stating ozone reactor 8 is communicated with the bottom of BAF 9 by pipe fitting, arranges pump 8b on the pipe fitting;Make In industry, ozone by valve actuating mechanism distribution, and play in ozone reactor pneumatic stirring effect, the waste water in ozone reactor 8 with Ozone in entered ozone reactor 8 carries out haptoreaction, and the organic pollutant of the difficult for biological degradation in waste water is in ozone Strong oxidation under oxidized, macromole is changed into small molecule, it is easy to biochemical degradation, and the biodegradability of waste water is improved, and is follow-up BAF biochemical treatment create conditions;While partial organic substances are inorganic matters by exhaustive oxidation, reduce further useless COD, BOD in water5, meanwhile, the coloured groups in waste water are destroyed, and the colourity of waste water effectively reduces;Waste water is in ozone reaction Response time (hydraulic detention time) in device 8 is 1~3 hour, and ozone dosage is 0.5~2g/L;In this example, ozone reaction Device is the ozone reactor of existing structure, a size of φ 2.2m × 3m, and response time of the waste water in ozonization, (waterpower was stopped Stay the time) about 2 hours, ozone dosage is that 1.0~1.5g/L, the tail gas produced by ozone reactor is through corresponding ozone decomposed Device is discharged after decomposing.Waste water COD < 500mg/L, BOD after processing through ozone reactor5< 150mg/L, 50 times of colourity <.
9 inner chamber bottom of the BAF is provided with aeration component 9a, and there is biological filter bed of material 9b at middle part, and aeration and biological is filtered Pond 9 is carried out a biological disposal upon to waste water, eliminates COD, BOD in waste water further5、TN、NH3- N, while realize to remaining SS's Remove, 9 top of BAF is communicated with sterilization pool 10.In operation, aeration component provides air by compressed air source unit and is exposed Gas, the waste water in BAF 9 is fully contacted with biofilter material in the layer microbial film, and the Organic substance in degrading waste water is simultaneously Nitration denitrification denitrogenation is carried out, to eliminate COD, BOD in waste water further5、TN、NH3- N, meanwhile, BAF Filtering function realizes the removal to remaining ss suspended solid;In this example, BAF is filtered for the aeration and biological of existing structure Pond, using ceramic grain filter, 3~4m/h of filtering velocity, the water outlet dissolved oxygen of BAF is not higher than 5mg/L, BAF Periodically backwash is carried out using its water outlet.
The sterilization pool 10 to waste water disinfection, sterile-processed rear discharged wastewater met the national standard.Disinfectant can be adopted Chlorine dioxide, ozone, bleaching powder etc.;Using chlorine dioxide as disinfectant in this enforcement.
In being embodied as, the sludge in mud storage pool 11 is separately disposed after device for dehydrating sladge waste process;Device for dehydrating sladge waste Centrifugal dehydrator or belt type dewaterer etc. can be adopted, this example adopts centrifugal dehydrator, the sludge outward transport after dehydration.
Waste water is after apparatus of the present invention process, and pollutant levels 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 enters town sewer water standard》" B level " standard in GB/T 31962-2015.

Claims (8)

1. kitchen garbage, waste-water processing meanss, is characterized in that including:Oil removal preliminary sedimentation tank (1), regulating reservoir (2), the first pH regulator pond (3), Ammonia blowing-out tower (4), the second pH regulator pond (5), A/O biochemical treatment apparatus (6), sedimentation tank (7), ozone reactor (8), exposure Gas biofilter (9), sterilization pool (10);
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, just sinks to waste water Process, remove most suspended substances SS;
Regulating reservoir (2) are communicated with the first pH regulator pond (3), and regulating reservoir (2) is adjusted to the waste water water yield, water quality;
There is the first rabbling mechanism (3a) in first pH regulator pond (3), the first pH regulator pond (3) inner chamber is simultaneously thrown with alkali (NaOH) Plus component is communicated, the first pH regulator pond (3) carries out first time regulation to the pH value of waste water, makes 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 regulator pond (3), Ammonia blowing-out tower (4) Wastewater outlet is communicated with the second pH regulator pond (5), and waste water is processed 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 second pH regulator pond (5), the second pH regulator pond (5) inner chamber and with sulphuric acid (H2SO4) Add component to communicate, the second pH regulator pond (5) is communicated with the anoxic zone (6a) in A/O biochemical treatment apparatus (6), the 2nd pH Regulating reservoir carries out second regulation to the pH value of waste water, forms the suitable growing environment of microorganism;
Aerobic zone (6b) in A/O biochemical treatment apparatus (6) is communicated with the sedimentation tank (7), A/O biochemical treatment apparatus (6) biochemical treatment is carried out to waste water, effectively removes most COD, BOD5, remove NH further3- N, TN, effectively go dephosphorization;
Sedimentation tank (7) bottom You Zhuni chamber (7a), there are sludge outlet, sedimentation tank (7) top and the ozone in storage mud chamber The waste water inlet of reactor (8) is communicated, and waste water removes ss suspended solid and TP in waste water further through sedimentation tank (7) precipitation process;
There is ozone valve actuating mechanism (8a) in ozone reactor (8), the wastewater outlet of ozone reactor (8) is given birth to the aeration The bottom in thing filter tank (9) communicates, and waste water carries out haptoreaction with ozone in ozone reactor (8), reduces in waste water further COD, BOD5, coloured groups in waste water are destroyed, and the colourity of waste water effectively reduces;
BAF (9) inner chamber bottom is provided with aeration component (9a), and there are the biological filter bed of material (9b), aeration and biological in middle part Filter tank (9) top is communicated with the sterilization pool (10), and BAF (9) is carried out a biological disposal upon to waste water, is removed further COD, BOD in waste water5、TN、NH3- N, while realize the removal to remaining SS;
Sterilization pool (10) to waste water disinfection, sterile-processed rear discharged wastewater met the national standard.
2. according to the kitchen garbage, waste-water processing meanss described in claim 1, it is characterized in that, described first pH regulator pond (3) will The pH value of waste water is adjusted to 10.5~12.
3. according to the kitchen garbage, waste-water processing meanss described in claim 1, it is characterized in that, enter Ammonia blowing-out tower (4) Air is 2500~3500 with the gas liquid ratio of the waste water for entering Ammonia blowing-out tower (4):1, fill out in the middle part of Ammonia blowing-out tower (4) inner chamber The bed of material (4f), the carbon-nitrogen ratio (BOD after waste water is processed through the Ammonia blowing-out tower, in waste water5:TKN) improve to 4:1~6:1.
4. according to the kitchen garbage, waste-water processing meanss described in claim 1, it is characterized in that, described second pH regulator pond (5) will PH value of waste water is adjusted to 7.0~8.5.
5. according to the kitchen garbage, waste-water processing meanss described in claim 1, it is characterized in that, the A/O biochemical treatment apparatus are good Muddy water mixed solution in oxygen area (6b) is flowed back in anoxic zone (6a) by backflow member (6c), and reflux ratio is 200%~500%.
6. according to the kitchen garbage, waste-water processing meanss described in claim 5, it is characterized in that, waste water is in the A/O biochemical treatment Total hrt in device (6) is 10~20 days, wherein anoxic zone 4~6 days, aerobic zone 6~15 days.
7., according to the kitchen garbage, waste-water processing meanss described in claim 1, it is characterized in that:
The partial sludge of sedimentation tank (7) bottom storage mud intracavity is flowed back in A/O biochemical treatment apparatus by reflux (7b) In anoxic zone (6a), return sludge ratio is 50~100%;
The dosage for adding aluminium salt or iron salt into sedimentation tank (7) is 20~100mg/L.
8. according to the kitchen garbage, waste-water processing meanss described in claim 1, it is characterized in that, waste water is in the ozonization device (8) response time in is 1~3 hour, and ozone dosage is 0.5~2g/L.
CN201611020738.XA 2016-11-21 2016-11-21 Kitchen garbage wastewater treatment apparatus Pending CN106430845A (en)

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CN107265791A (en) * 2017-08-11 2017-10-20 中机国际工程设计研究院有限责任公司 Kitchen garbage slurry fermentation waste water processing unit
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CN107352745A (en) * 2017-08-11 2017-11-17 中机国际工程设计研究院有限责任公司 Kitchen garbage fermentation waste water processing method
CN108862824A (en) * 2018-06-13 2018-11-23 南京大学 A kind of denitrification sewage-treatment plant and its treatment process
CN108862824B (en) * 2018-06-13 2020-12-15 南京大学 Denitrification sewage treatment device and treatment process thereof
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