CN110092536A - A kind of kitchen anaerobic digestion biogas slurry combined treatment process - Google Patents

A kind of kitchen anaerobic digestion biogas slurry combined treatment process Download PDF

Info

Publication number
CN110092536A
CN110092536A CN201910338159.7A CN201910338159A CN110092536A CN 110092536 A CN110092536 A CN 110092536A CN 201910338159 A CN201910338159 A CN 201910338159A CN 110092536 A CN110092536 A CN 110092536A
Authority
CN
China
Prior art keywords
tank
biogas slurry
kitchen
sludge
anaerobic digestion
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
CN201910338159.7A
Other languages
Chinese (zh)
Inventor
李雄伟
王罕
耿震
蒋岚岚
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuxi Municipal Design Institute Co Ltd
Original Assignee
Wuxi Municipal Design Institute Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Wuxi Municipal Design Institute Co Ltd filed Critical Wuxi Municipal Design Institute Co Ltd
Priority to CN201910338159.7A priority Critical patent/CN110092536A/en
Publication of CN110092536A publication Critical patent/CN110092536A/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • C02F1/24Treatment of water, waste water, or sewage by flotation
    • 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
    • C02F1/44Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C02F1/444Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
    • 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
    • C02F1/5236Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
    • 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
    • C02F1/54Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
    • C02F1/56Macromolecular compounds
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00Treatment of sludge; Devices therefor
    • C02F11/12Treatment of sludge; Devices therefor by de-watering, drying or thickening
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00Treatment of sludge; Devices therefor
    • C02F11/12Treatment of sludge; Devices therefor by de-watering, drying or thickening
    • C02F11/121Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
    • C02F11/127Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering by centrifugation
    • 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
    • C02F2001/007Processes including a sedimentation step
    • 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
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/30Aerobic and anaerobic processes
    • C02F3/302Nitrification and denitrification treatment

Abstract

The present invention provides a kind of kitchen anaerobic digestion biogas slurry combined treatment process, mainly includes pretreatment system, high-efficiency biological denitrification processing system, MBR processing system;Through the invention, to solve investment and the operating cost height of kitchen anaerobic digestion biogas slurry treatment engineering of the existing technology, effluent quality fluctuation is big, is discharged the problem of being difficult to stably reaching standard.Present invention process advantage is while the pollutants such as the removal carbon of high-efficiency low energy consumption, nitrogen to have good treatment effect for kitchen garbage biogas slurry, anti-kitchen biogas slurry waste water quality water impact load ability is strong, and operation energy consumption and operating cost are low.This group technology is not only suitable for the processing of kitchen anaerobic digestion biogas slurry, and may be equally applied to the processing of other high ammonia nitrogens, high concentrated organic wastewater.

Description

A kind of kitchen anaerobic digestion biogas slurry combined treatment process
Technical field
The present invention relates to kitchen garbage processing technology fields, and in particular to a kind of kitchen anaerobic digestion biogas slurry combined treatment work Skill.
Background technique
With the improvement of living standards, the pollution problem of kitchen garbage is outstanding day by day.The processing of kitchen garbage is also quietly emerging It rises, but also brings the biogas slurry problem of anaerobic digestion of kitchen wastes generation therewith.
The characteristics of kitchen anaerobic digestion biogas slurry: (1) pollutant is complex in composition changeable;(2) organic pollutant concentration is high: COD Concentration is up to 10000mg/L~30000mg/L or so;(3) ammonia nitrogen concentration is high: ammonia nitrogen concentration generally 1500mg/L~ 3000mg/L or so;(4) heavy metal ion and salt content are high: the salinity of kitchen biogas slurry is up to 0.5~1%;(5) fat content High: general animal and plant fat content is in 500mg/L~1000mg/L.
The common treatment process of kitchen anaerobic digestion biogas slurry: since the concentration of kitchen waste water is high and complicated component, so institute High COD, the ability of high ammonia nitrogen and high grease can be effectively removed simultaneously by selecting technique that must have.This kitchen waste water is higher containing grease, Therefore oil removal treatment need to be increased before common process.Oil removal processing is generally carried out using coagulation-air-float technology.By conditioning tank+mixed After the pretreatments such as solidifying air bearing, grease and organic concentration in waste water are greatly lowered, and waste water needs to carry out biological denitrificaion thereafter Treatment process is to remove most of nitrogen pollutant and remaining organic matter in waste water.Biological denitrification process include conventional denitrification/ Nitrify (An/O) technique and other Process of Biological Nitrogen Removal (such as anaerobic ammonia oxidation process, short-cut nitrification-denitrification technique, same When nitration denitrification technology etc.).And biological denitrificaion processing needs microorganism to keep longer sludge age, and membrane treatment process has Sludge is retained, sludge concentration is increased, improves the advantages such as sludge age, so the economy of biological denitrificaion treatment process and membrane technology The combination that the effluent quality of high standard has promoted membrane technology in recent years and aerobic microbiological to handle, in terms of removing nitrogen pollutant The powerful market competitiveness is shown, such as MBR reactor process.In conclusion kitchen anaerobic digestion biogas slurry treatment technique For " oil removing+pretreatment+biological denitrificaion processing+film filtering " technique.Pretreatment+biological denitrificaion treatment process generally uses at present " UASB+ two-stage A/O ", technique are mainly manifested in following aspects there are some defects:
1) two-stage A/O biochemistry pool takes up a large area, and construction investment is larger.
It is all raw using traditional two-stage A/O since ammonia nitrogen and organic concentration are higher in kitchen anaerobic digestion biogas slurry Change pond and need to design biggish pool capacity (area), causes project occupied area larger, Civil Cost is higher.
2) operating cost is high: biochemical using traditional two-stage A/O since ammonia nitrogen concentration is up to 2500mg/L in kitchen biogas slurry Pond needs the biggish air blower of design power to meet the aeration needs of nitrification tank, and air blower needs while satisfaction are said several in waste water The organic matter aeration of thousand or even mg/L up to ten thousand is removed to the discharge standard of 500mg/L, while needing to say 2500mg/L in waste water Ammonia nitrogen aeration becomes nitrate anion, simultaneously because aerobic tank needs strength aeration to remove most of organic matter and ammonia nitrogen, causes back Carbon source is insufficient when flowing to the nitrate anion denitrification of the 2500mg/L in denitrification, needs to add a large amount of additional carbon at this time, lead Operating cost is caused to increase.In addition, the sludge quantity that system organic matter and ammonia nitrogen aeration reaction generate, increases sludge treating system Burden and expense.
3) effluent quality fluctuation is big, and water outlet is difficult to stably reaching standard: traditional handicraft uses UASB+ two-stage A/O-MBR technique Or two-stage A/O-MBR technique, system by pretreatment after by one of technique of two-stage A/O-MBR with regard to direct emission, in system Influent quality water fluctuates in biggish situation, it is difficult to resist system shock load, and lack necessary process control means.
4) anaerobic methane safety problem: the content of organic matter is higher in some areas, kitchen garbage, leads to anaerobic digestion natural pond Organic concentration is likely to be breached 10,000-3 ten thousand mg/L in liquid, needs first to be pre-processed using anaerobic reactors such as UASB at this time, by This can bring the safety issue of biogas treatment, and part kitchen processing item does not allow scene setting biogas container, methane boiler, The danger sources such as anaerobic reactor.Which also limits traditional UASB+ two-stage A/O-MBR technique answering in kitchen biogas slurry treatment With.
Summary of the invention
The present invention provides a kind of kitchen anaerobic digestion biogas slurry combined treatment process, is detested with solving kitchen of the existing technology The problem of oxygen digests investment and the operating cost height of biogas slurry treatment engineering, and effluent quality fluctuation is big, and water outlet is difficult to stably reaching standard.
In order to solve the above technical problems, the present invention provides a kind of kitchen anaerobic digestion biogas slurry combined treatment process, it is main to wrap Include pretreatment system, high-efficiency biological denitrification processing system, MBR processing system;
The pretreatment system includes conditioning tank and coagulation floatation, in conditioning tank to kitchen anaerobic digestion biogas slurry into The adjusting of row water quality, water;Conditioning tank residence time 12h;Conditioning tank water outlet is pumped into coagulating basin by water pump, adds PAC and PAM medicine Dosage form is at floccule body, and water outlet enters integration air-float equipment and handles, to remove most of suspended matters and the oil in kitchen biogas slurry Rouge adversely affects to avoid to subsequent biochemical pond and membranous system, and the coagulating basin residence time is 1.5h, when airfloat equipment stops Between be 48min;
The high-efficiency biological denitrification processing system includes high exposure water inlet tank, high load aeration tank, radical sedimentation basin and detests Anaerobic ammonium oxidation water inlet tank, anaerobic ammonia oxidation reactor, flotation tank water outlet enter high exposure water inlet tank, and hydraulic detention time 1.5h is high It exposes and sets mechanical agitator in water inlet tank, water outlet is lifted into high load aeration tank, the water outlet gravity of high load aeration tank by pump Into radical sedimentation basin, after mud-water separation, sludge part flows back into high load aeration tank bottom, partially drains into sludge condensation Pond, clear liquid enter Anammox water inlet tank, residence time 1.5h, Anammox water inlet tank in set mechanical agitator, it is described NaOH lye, which is added, in Anammox water inlet tank adjusts pH and micro- nutritive salt to meet the ammonia oxygen in anaerobic ammonia oxidation reactor Change the growth and breeding requirement of red bacterium;The water outlet of Anammox water inlet tank is lifted into anaerobic ammonia oxidation reactor by pumping, and is detesting In anaerobic ammonium oxidation reactor, for the ammonia nitrogen in kitchen biogas slurry under the conditions of aerobic aeration, part nitrification generates nitroso nitrogen, generation Nitroso nitrogen directly reacts the removal for generating nitrogen and realizing ammonia nitrogen, water outlet weight with ammonia nitrogen under the action of ANAMMOX microorganism Force flow enters MBR processing system front end;
MBR processing system is made of denilrification system, nitrification and built-in ultrafiltration system, wherein denilrification system and Nitrification uses two-stage process, and MBR processing system includes that sequentially connected level-one denitrification pond, level-one nitrification tank, second level are anti- Nitrification tank, second level nitrification tank and a built-in ultrafiltration membrane pool.
The high load aeration tank uses high tower cylinder of steel structure, and the design residence time is 30h, the high load aeration tank The interior dedicated aerator of setting, designs available depth 8m.
The anaerobic ammonia oxidation reactor design denitrifying load is not less than 1.6kgNH4-N/ (m3.d), and Anammox is anti- Device is answered to be discharged TS < 1000mg/L.
The MBR processing system sets mixed liquor return-flow system of the level-one nitrification tank to level-one denitrification pond, second level nitre respectively Change pond to second level denitrification pond mixed liquor return-flow system and ultrafiltration membrane pool to level-one denitrification pond sludge recirculation system, time Stream is than being respectively 600%, 350% and 350%.Specifically, level-one nitrification tank is connect by pipeline with level-one denitrification pond, and two Grade nitrification tank is connect by pipeline with second level denitrification pond, and for realizing nitrate reflux, ultrafiltration membrane pool passes through pipeline and level-one The connection of denitrification pond to realize sludge reflux, while sewage backflow not up to standard being sent to denitrification pond and is carried out at denitrification Reason.
It further include sludge treating system, the sludge treating system includes sludge concentration tank and centrifugal dehydrator, and air bearing produces The sludge that raw dross, sedimentation basin and MBR processing system generate is discharged into sludge concentration tank, it is concentrated after sludge by sludge into Material is pumped into centrifugal dehydrator and is carried out dehydrating, the pressing filtering liquid that the supernatant and centrifugal dehydrator that sludge concentration tank generates generate It is discharged into conditioning tank together, the system of returning to re-starts processing, and the mud cake after filters pressing transports outward incineration disposal.The sludge concentration tank Design concentration time is 20h.
Bring of the present invention is used the utility model has the advantages that the present invention provides a kind of Novel kitchen anaerobic digestion biogas slurry treatment technique Novel biological dinitrification (Anammox) technique, greatly reduce kitchen anaerobic digestion biogas slurry treatment engineering investment and operation at This, while effluent quality is also significantly promoted, discharge standard water quality requirement is significantly better than using the effluent quality of the system.
Detailed description of the invention
Fig. 1 is the schematic process flow diagram of present invention process.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with drawings and the specific embodiments, to this Invention is described in further detail.
Embodiment one
The present invention is successfully applied to Wuxi curry favour connection kitchen castoff processing engineering, and treatment process uses as shown in Figure 1 Method.
Kitchen anaerobic digestion biogas slurry combined treatment process provided by the invention mainly includes pretreatment system, high-performance bio Denitrogenation processing system, MBR processing system;
The pretreatment system includes conditioning tank and coagulation floatation, in conditioning tank to kitchen anaerobic digestion biogas slurry into The adjusting of row water quality, water;Conditioning tank residence time 12h;Conditioning tank water outlet is pumped into coagulating basin by water pump, adds PAC and PAM medicine Dosage form is at floccule body, and water outlet enters integration air-float equipment and handles, to remove most of suspended matters and the oil in kitchen biogas slurry Rouge adversely affects to avoid to subsequent biochemical pond and membranous system, and the coagulating basin residence time is 1.5h, when airfloat equipment stops Between be 48min;
The high-efficiency biological denitrification processing system includes high exposure water inlet tank, high load aeration tank, radical sedimentation basin and detests Anaerobic ammonium oxidation water inlet tank, anaerobic ammonia oxidation reactor, flotation tank water outlet enter high exposure water inlet tank, and hydraulic detention time 1.5h is high It exposes and sets mechanical agitator in water inlet tank, water outlet is lifted into high load aeration tank by pump, and high load aeration tank uses high tower Cylinder of steel structure (the design residence time is 30h), inside sets dedicated aerator, designs available depth 8m.The main feature of this reactor Be by optimization design and accurate control so that high load capacity aeration reaction pond mainly plays the function of efficiently removing organic matter, and Removal effect is hardly risen to ammonia nitrogen.In order to guarantee have enough ammonia nitrogens dense in subsequent efficient denitrification reactor high load capacity water inlet Degree, high load capacity aeration reaction pond must not exceed 10% to the removal rate of ammonia nitrogen, and ensure high load capacity aerating system water outlet COD < 3000mg/L.To control sludge age, avoid that nitration reaction occurs in high load capacity aeration reactor, dirt in high load capacity aeration reactor Mud concentration (MLSS) must not exceed 8g/L.The water outlet gravity of high load aeration tank enters radical sedimentation basin, since high load capacity exposes The strong aeration stirring in gas pond acts on, so the mud mixture of its water outlet needs the longer residence time to remove glar moisture From radical sedimentation basin design surface hydraulic loading is 0.6m3/(m2.h), after mud-water separation, sludge part flows back into high load capacity It is aerated bottom of pond portion, partially drains into sludge concentration tank, clear liquid enters Anammox water inlet tank, residence time 1.5h, anaerobism ammonia oxygen Change and set mechanical agitator in water inlet tank, adds NaOH lye in the Anammox water inlet tank and adjust pH and micro- nutritive salt with full The growth and breeding requirement of the red bacterium of ammoxidation in sufficient anaerobic ammonia oxidation reactor;The water outlet of Anammox water inlet tank is promoted by pump Into anaerobic ammonia oxidation reactor, in ANAMMOX reactor, the ammonia nitrogen in kitchen biogas slurry is under the conditions of aerobic aeration, part Nitrification generates nitroso nitrogen, and the nitroso nitrogen of generation directly reacts under the action of ANAMMOX microorganism with ammonia nitrogen generates nitrogen Realize the removal of ammonia nitrogen.This process is not needed to add any carbon source, be exposed simultaneously due to the generation of not no anti-nitration reaction Tolerance is significantly reduced compared with nitrification/denitrification process, so that operating cost sharp fall.Ammonia oxidation reactor may be implemented The NH4-N removal rate of 80% or more TN removal rate and 90% or more.Ammonia oxidation reactor design denitrifying load is not less than 1.6kgNH4-N/(m3.d), reactor is discharged TS < 1000mg/L.It is discharged gravity and flows into MBR processing system front end.
MBR processing system is made of denilrification system, nitrification and built-in ultrafiltration system, wherein denilrification system and Nitrification uses two-stage process, and MBR processing system includes that sequentially connected level-one denitrification pond, level-one nitrification tank, second level are anti- Nitrification tank, second level nitrification tank and a built-in ultrafiltration membrane pool.Aeration uses the blast aeration of special equipment jet stream in nitrification tank, leads to Excessively high active aerobic microbiological acts on, and the majority of organic pollutants in sewage is degraded in nitrification tank, while ammonia nitrogen Nitrate nitrogen, nitrite nitrogen are oxidized under nitrifying microorganisms effect.Nitrate nitrogen, nitrite nitrogen are back in denitrification pond in anoxic It is reduced into nitrogen discharge in environment, achievees the purpose that biological denitrificaion.Microbial cells are divided from water outlet by high-performance ultrafiltration system From, it is ensured that suspended matter and larger molecular organics are fully trapped in system, and ultrafiltration membrane uses immersion PTFE material curtain type membrane, It is 10L/ (m that ultrafiltration, which designs membrane flux,2·h).The hydraulic detention time of each process section of two-stage A/O biochemical system is anoxic pond 1: 20h, aerobic tank 1:40h, anoxic pond 2:12h, aerobic tank 2:24h.The MBR processing system sets level-one nitrification tank to level-one respectively The mixed liquor return-flow system in denitrification pond, the mixed liquor return-flow system and ultrafiltration membrane pool of second level nitrification tank to second level denitrification pond are extremely The sludge recirculation system in level-one denitrification pond, reflux ratio are respectively 600%, 350% and 350%.Specifically, level-one nitrifies Pond is connect by pipeline with level-one denitrification pond, and second level nitrification tank is connect by pipeline with second level denitrification pond, for realizing nitre Hydrochlorate reflux, ultrafiltration membrane pool are connect by pipeline with level-one denitrification pond, to realize sludge reflux, while by dirt not up to standard Water reflux, which is sent to denitrification pond, carries out denitrification processing.
It further include sludge treating system, the sludge treating system includes sludge concentration tank and centrifugal dehydrator, and air bearing produces The sludge that raw dross, sedimentation basin and MBR processing system generate is discharged into sludge concentration tank, it is concentrated after sludge by sludge into Material is pumped into centrifugal dehydrator and is carried out dehydrating, the pressing filtering liquid that the supernatant and centrifugal dehydrator that sludge concentration tank generates generate It is discharged into conditioning tank together, the system of returning to re-starts processing, and the mud cake after filters pressing transports outward incineration disposal.The sludge concentration tank Design concentration time is 20h.
Furthermore, it is understood that the mating sewage disposal system of Wuxi City kitchen garbage processing item, processing material includes 250 tons/ Its kitchen garbage, 150 ton/days of perishable rubbish, 50 ton/days of waste greases.Sewage disposal system includes taking off after anaerobic digester system The biogas slurry of water rinses vehicle and waste water, the workshop flushing waste water of ground generation etc..Unified collect of waste water enters conditioning tank, by adjusting Section pond elevator pump is lifted into subsequent sewage disposal system.Design sewage disposal system treating capacity is 650m3/d。
Design Inlet and outlet water water quality such as table 1:
Water quality indicator Unit Raw water quality Emission limit
COD (mg/l) 15000 500
BOD5 (mg/l) 6000 300
TN (mg/l) 3000 70
NH4-N (mg/l) 2500 45
TSS (mg/l) 6000 400
pH 6~9 6.5~9.5
Vegetable and animals oils (mg/l) 1000 30
Treatment process each unit designs removal effect such as the following table 2:
Engineering design
(1) conditioning tank and accident pool: Reinforced Concrete Structure adjusts 10.0 × 5.0 × 6.5m of pool size, and available depth 6.0m has Imitate volume 300m3, underground type, mating elevator pump and diving mixer;Accident 10.0 × 10.0 × 6.5m of pool size, available depth 6.0m, dischargeable capacity 600m3, mating elevator pump and diving mixer.
(2) coagulation floatation: including coagulation reaction tank and combined air flotation equipment.Wherein coagulation reaction tank uses steel concrete knot Structure, size 2.0m × 3.0m × 6.5m, available depth 5.0m, dischargeable capacity 30m3 inside set 1 flash mixer and 1 at a slow speed Blender;Combined air flotation equipment uses carbon steel anti-corrosion material, size 6.0m × 3.0m × 2.1m.
(3) high load aeration tank: carbon steel anti-corrosion material, dischargeable capacity 830m3, size Φ 11.5m × 9.0m, available depth 8.0m.Residence time is 1.17d, and standard aerobic amount is 2400kgO2/d.Main mating mud discharging pump, micro-hole aerator and drum Blower.
(4) sedimentation basin: radical sedimentation basin, size Φ 8.0m × 4.5m, dischargeable capacity 200m3.
(5) carbon steel anti-corrosion material, size 12.0 × 9.0m of Φ, dischargeable capacity 915m3 anaerobic ammonia oxidation reactor: are used. It designs denitrifying load 1.6kgN/ (m3.d), 30~38 DEG C of water temperature of design, 100 tons of ANAMMOX sludge quantity (red bacterium), standard aerobic Amount is 3000kgO2/d.Capital equipment includes intake pump, mud discharging pump, air blower, micro-hole aerator, plate heat exchanger, cold But tower, steam jet ejector, cold water water pump, cooling sludge pump, micro- nutritive salt add pump etc..
(6) MBR system: the total dischargeable capacity of MBR system is 3140m3, total residence time 115.8h.Wherein, the anti-nitre of level-one Change pool size 9.0m × 10.0m × 7.0m, HRT=21.6h;Level-one nitrifies pool size 17.0m × 10.0m × 7.0m, HRT= 40.8h;Second level denitrification pool size 9.0m × 7.0m × 7.0m, HRT=15.1h;Second level nitrification pool size 17.0m × 7.0m × 7.0m, HRT=28.6h;Membrane tank dimensions 13.5m × 3.0m × 7.0m, HRT=9.7h.Pond is built jointly, using reinforced concrete structure, Available depth 6.5m.
Biochemistry pool designs sludge concentration 8kg/m3, denitrification rate 0.065kgNO3-N/ (kgMLSSd), day remaining dirt Mud amount 710kgSS/d, biochemical oxygen demand (BOD) 908.2kgO2/d;Membrane flux 10L/ (m2h), membrane area 2900m2,0.1 μ of membrane aperture M, using PTFE material.Sludge discharge 24m3/d.
Capital equipment includes a second level denitrification pond blender, jet aerator, jet-loop pump, a second level nitrification liquid time Flow pump, suction pump, backwashing pump, sludge reflux pump, air blower, MBR membrane module, plate heat exchanger, cooling water pump, cooling sludge pump Deng.
(7) sludge treating system:.The strain (red bacterium) that anaerobic ammonia oxidation reactor generates directly is pumped by mud discharging pump Enter and separated on hydraulic screen, the red bacterium sifted out can externally sell.The dross that air bearing generates, sedimentation basin and MBR system discharge Excess sludge be discharged into sludge concentration tank, concentration basin supernatant is discharged into underground conditioning tank, and thickened sludge passes through sewage sludge feed and pumps Centrifugal dewatering of sludge machine is transported to be carried out dehydrating.The filtrate that concentration basin supernatant and sludge dewatering generate flows back into adjusting Pond.Capital equipment includes centrifugal dehydrator, medicine system, sewage sludge feed pump etc..
Investment and operating cost analysis
It is 30,000,000 yuan that Wuxi curry favour, which joins kitchen castoff anaerobic digestion biogas slurry treatment total investment of engineering, wherein civil engineering costs 8000000,22,000,000 yuan of equipment and installation and debugging part, investment cost is significantly less than market similar projects.This project runtime fortune Row expense such as table 3:
In summary, the mating sewage disposal system of Wuxi City kitchen garbage processing item has the advantage that
(1) small investment: this project gross investment and civil engineering, equipment and the investment of installation and debugging part are significantly less than use The traditional handicraft of the similar waste water of the processing such as " UASB+MBR (two-stage A/O) or MBR (two-stage A/O) technique ".
(2) occupied area is small: due to using high tower high load aeration tank and Anammox technology, the water inlet of the pond MBR Organic matter and ammonia nitrogen are lower, significantly reduce the pool capacity and area of two-stage A/O biochemistry pool.
(3) discharge standard water quality requirement is significantly better than using the effluent quality of the system: is protected since this project designs more sets The group technology of barrier system can make effluent quality better than standard of drainage limit value, and it is 300mg/L (discharge value that system, which is discharged COD, 500mg/L), water outlet total nitrogen can accomplish 50mg/L (discharge value 70mg/L) when not adding carbon source, if after adding carbon source It can accomplish that the low value of 30mg/L, water outlet ammonia nitrogen are 30mg/L (discharge value 45mg/L).
(4) system has stronger capacity of resisting impact load: since system effluent quality is lower than discharge limitation, so that system Water inlet can bear the fluctuation of certain water and water quality, and high load capacity aerating system in system, Anaerobic ammonium oxidation system, MBR System, which devises, surmounts system and automatic control of liquid level locking system, and in MBR system, level-one nitrification tank, which devises, directly connects membrane cisterna Surmount pipe, can be according to water quality and water without second level A/O biochemical treatment, system when amount of inlet water is little It is required that controlling the liquid level and switching water flow running way in each reactor, guarantee that system can be with reliable and stable qualified discharge, and pass through Ji energy conservation.
(5) excess sludge (red bacterium) that Anaerobic ammonium oxidation system generates can externally sell acquirement income, sludge yield compared with Low: the red bacterium income of this project Anammox reaches 4.615 yuan/m3 waste water;Since most ammonia-nitrogen is reacted in Anammox Removal in device, and the strain (red bacterium) that anaerobic ammonia oxidation reactor generates directly is pumped on hydraulic screen by mud discharging pump and is carried out Separation, the red bacterium sifted out can externally sell, and do not need to be discharged into sludge concentration tank and go to handle, so significantly reducing the dirt of system Mud discharge amount and dehydrated sludge disposition amount.
(6) system operation cost is lower: direct operating cost is only 9.50 yuan/m3, counts equipment depreciation and update cost in It is afterwards 15.8 yuan/m3, this two operating costs are similarly significantly less than " UASB+MBR (two-stage A/O) or MBR (two-stage A/O) work The traditional handicraft of the similar waste water of the processing such as skill ".
In conclusion the present invention provides a kind of Novel kitchen anaerobic digestion biogas slurry treatment technique, with novel biological dinitrification (Anammox) technique greatly reduces the investment and operating cost of kitchen anaerobic digestion biogas slurry treatment engineering, while also big Amplitude promotes effluent quality, is significantly better than discharge standard water quality requirement using the effluent quality of the system.The group technology is not only It is suitable for the processing of kitchen anaerobic digestion biogas slurry, and may be equally applied to the processing of other high ammonia nitrogens, high concentrated organic wastewater.
The above description is only an embodiment of the present invention, is not intended to restrict the invention, for those skilled in the art For member, the invention may be variously modified and varied.All within the spirits and principles of the present invention, it is made it is any modification, Equivalent replacement, improvement etc., should be included within scope of the presently claimed invention.

Claims (6)

1. a kind of kitchen anaerobic digestion biogas slurry combined treatment process, it is characterised in that: mainly include pretreatment system, high-performance bio Denitrogenation processing system, MBR processing system;
The pretreatment system includes conditioning tank and coagulation floatation, carries out water to kitchen anaerobic digestion biogas slurry in conditioning tank The adjusting of matter, water;Conditioning tank residence time 12h;Conditioning tank water outlet is pumped into coagulating basin by water pump, adds PAC and PAM medicament shape At floccule body, water outlet enters integration air-float equipment and handles, to remove most of suspended matters and the grease in kitchen biogas slurry, with It avoids adversely affecting subsequent biochemical pond and membranous system, the coagulating basin residence time is 1.5h, and the airfloat equipment residence time is 48min;
The high-efficiency biological denitrification processing system includes high exposure water inlet tank, high load aeration tank, radical sedimentation basin and anaerobism ammonia Oxidation water inlet tank, anaerobic ammonia oxidation reactor, flotation tank water outlet enter height and expose tank of intaking, and water outlet is lifted into high load capacity by pump Aeration tank, the water outlet gravity of high load aeration tank enter radical sedimentation basin, and after mud-water separation, sludge part flows back into high load capacity It is aerated bottom of pond portion, partially drains into sludge concentration tank, clear liquid enters Anammox water inlet tank, and the Anammox is intake in tank It adds NaOH lye adjusting pH and micro- nutritive salt is wanted with the growth and breeding for meeting the red bacterium of the ammoxidation in anaerobic ammonia oxidation reactor It asks;The water outlet of Anammox water inlet tank is lifted into anaerobic ammonia oxidation reactor by pumping, in anaerobic ammonia oxidation reactor, meal For ammonia nitrogen in the biogas slurry of kitchen under the conditions of aerobic aeration, part nitrification generates nitroso nitrogen, and the nitroso nitrogen and ammonia nitrogen of generation exist Directly reaction generates the removal that nitrogen realizes ammonia nitrogen under the action of ANAMMOX microorganism, and water outlet gravity flows into MBR processing system Front end;
MBR processing system is made of denilrification system, nitrification and built-in ultrafiltration system, and MBR processing system includes successively Level-one denitrification pond, level-one nitrification tank, second level denitrification pond, second level nitrification tank and a built-in ultrafiltration membrane pool for connection.
2. kitchen anaerobic digestion biogas slurry combined treatment process as described in claim 1, which is characterized in that the high load capacity aeration Pond uses high tower cylinder of steel structure, and the design residence time is 30h, the dedicated aerator of setting, design in the high load aeration tank Available depth 8m.
3. kitchen anaerobic digestion biogas slurry combined treatment process as described in claim 1, which is characterized in that the Anammox Reactor design denitrifying load is not less than 1.6kgNH4-N/(m3.d), anaerobic ammonia oxidation reactor is discharged TS < 1000mg/L.
4. kitchen anaerobic digestion biogas slurry combined treatment process as described in claim 1, which is characterized in that the MBR processing system System set respectively level-one nitrification tank to the mixed liquor return-flow system in level-one denitrification pond, second level nitrification tank to second level denitrification pond it is mixed Liquid return-flow system and ultrafiltration membrane pool are closed to the sludge recirculation system in level-one denitrification pond, reflux ratio is respectively 600%, 350% With 350%.
5. kitchen anaerobic digestion biogas slurry combined treatment process as described in claim 1, which is characterized in that further include Treatment of Sludge System, the sludge treating system include sludge concentration tank and centrifugal dehydrator, at dross, sedimentation basin and the MBR that air bearing generates The sludge that reason system generates is discharged into sludge concentration tank, it is concentrated after sludge centrifugal dehydrator progress is pumped by sewage sludge feed Dehydration, the pressing filtering liquid that the supernatant and centrifugal dehydrator that sludge concentration tank generates generate are discharged into conditioning tank together, return to System re-starts processing, and the mud cake after filters pressing transports outward incineration disposal.
6. kitchen anaerobic digestion biogas slurry combined treatment process as claimed in claim 5, which is characterized in that the sludge concentration tank Design concentration time is 20h.
CN201910338159.7A 2019-04-25 2019-04-25 A kind of kitchen anaerobic digestion biogas slurry combined treatment process Pending CN110092536A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910338159.7A CN110092536A (en) 2019-04-25 2019-04-25 A kind of kitchen anaerobic digestion biogas slurry combined treatment process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910338159.7A CN110092536A (en) 2019-04-25 2019-04-25 A kind of kitchen anaerobic digestion biogas slurry combined treatment process

Publications (1)

Publication Number Publication Date
CN110092536A true CN110092536A (en) 2019-08-06

Family

ID=67445818

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910338159.7A Pending CN110092536A (en) 2019-04-25 2019-04-25 A kind of kitchen anaerobic digestion biogas slurry combined treatment process

Country Status (1)

Country Link
CN (1) CN110092536A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110803845A (en) * 2019-11-27 2020-02-18 长沙凯天工研院环保服务有限公司 Biological conditioner and method for improving dehydration performance of anaerobic digestion substances of kitchen waste
CN111646649A (en) * 2020-06-19 2020-09-11 昆明铁路局集团科学技术研究所 Excrement wastewater treatment method for modular railway train excrement collector
CN112358137A (en) * 2020-11-20 2021-02-12 北京首钢生物质能源科技有限公司 Kitchen waste and leachate synergistic treatment process
CN112679034A (en) * 2020-11-20 2021-04-20 武汉天源环保股份有限公司 Wastewater treatment method and system
CN113044985A (en) * 2021-04-12 2021-06-29 波塞冬(江苏)新材料科技有限公司 Biological fermentation wastewater treatment process
CN113429022A (en) * 2021-07-01 2021-09-24 江西省科学院微生物研究所 Modular rapid culture biogas slurry wastewater treatment system and operation method thereof
CN113458125A (en) * 2021-07-26 2021-10-01 中国环境保护集团有限公司 Kitchen waste treatment system and method
CN114249490A (en) * 2021-12-14 2022-03-29 深圳市腾浪再生资源发展有限公司 Efficient nitrogen and phosphorus removal process for kitchen wastewater with low carbon-nitrogen ratio
CN114560595A (en) * 2022-03-01 2022-05-31 北京坦思环保科技有限公司 Treatment method and treatment system for kitchen waste biogas slurry

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1669958A (en) * 2005-01-14 2005-09-21 清华大学 Infiltration liquid treatment method in domestic refuse burying field
JP2007044579A (en) * 2005-08-08 2007-02-22 Takuma Co Ltd Biomass treatment system
CN102531295A (en) * 2012-02-13 2012-07-04 北京昊业怡生科技有限公司 Method for jointly treating different garbage
CN106006962A (en) * 2016-05-18 2016-10-12 上海立泉环境科技有限公司 Biological aerated filter device
CN106587349A (en) * 2016-11-11 2017-04-26 北京交通大学 Treating method and apparatus for corn deep-processing wastewater with high contents of ammonia, nitrogen and organic matters
CN107827313A (en) * 2017-10-27 2018-03-23 六安市排水有限公司 Kitchen anaerobic fermented liquid Anammox pretreatment unit and method
CN207760200U (en) * 2017-12-21 2018-08-24 武汉都市环保工程技术股份有限公司 Kitchen waste sewage processing system
CN109052827A (en) * 2018-08-21 2018-12-21 重庆中标环保集团有限公司 Food waste percolate enhanced processing method and system

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1669958A (en) * 2005-01-14 2005-09-21 清华大学 Infiltration liquid treatment method in domestic refuse burying field
JP2007044579A (en) * 2005-08-08 2007-02-22 Takuma Co Ltd Biomass treatment system
CN102531295A (en) * 2012-02-13 2012-07-04 北京昊业怡生科技有限公司 Method for jointly treating different garbage
CN106006962A (en) * 2016-05-18 2016-10-12 上海立泉环境科技有限公司 Biological aerated filter device
CN106587349A (en) * 2016-11-11 2017-04-26 北京交通大学 Treating method and apparatus for corn deep-processing wastewater with high contents of ammonia, nitrogen and organic matters
CN107827313A (en) * 2017-10-27 2018-03-23 六安市排水有限公司 Kitchen anaerobic fermented liquid Anammox pretreatment unit and method
CN207760200U (en) * 2017-12-21 2018-08-24 武汉都市环保工程技术股份有限公司 Kitchen waste sewage processing system
CN109052827A (en) * 2018-08-21 2018-12-21 重庆中标环保集团有限公司 Food waste percolate enhanced processing method and system

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
冯佳珺等: "部分亚硝化-厌氧氨氧化串联工艺处理餐厨垃圾厌氧消化液研究", 《安全与环境学报》 *
吴健等: "A/O-MBR处理高COD和高氨氮餐厨废水试验研究", 《工业水处理》 *

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110803845A (en) * 2019-11-27 2020-02-18 长沙凯天工研院环保服务有限公司 Biological conditioner and method for improving dehydration performance of anaerobic digestion substances of kitchen waste
CN111646649A (en) * 2020-06-19 2020-09-11 昆明铁路局集团科学技术研究所 Excrement wastewater treatment method for modular railway train excrement collector
CN112358137A (en) * 2020-11-20 2021-02-12 北京首钢生物质能源科技有限公司 Kitchen waste and leachate synergistic treatment process
CN112679034A (en) * 2020-11-20 2021-04-20 武汉天源环保股份有限公司 Wastewater treatment method and system
CN113044985A (en) * 2021-04-12 2021-06-29 波塞冬(江苏)新材料科技有限公司 Biological fermentation wastewater treatment process
CN113429022A (en) * 2021-07-01 2021-09-24 江西省科学院微生物研究所 Modular rapid culture biogas slurry wastewater treatment system and operation method thereof
CN113458125A (en) * 2021-07-26 2021-10-01 中国环境保护集团有限公司 Kitchen waste treatment system and method
CN114249490A (en) * 2021-12-14 2022-03-29 深圳市腾浪再生资源发展有限公司 Efficient nitrogen and phosphorus removal process for kitchen wastewater with low carbon-nitrogen ratio
CN114560595A (en) * 2022-03-01 2022-05-31 北京坦思环保科技有限公司 Treatment method and treatment system for kitchen waste biogas slurry

Similar Documents

Publication Publication Date Title
CN110092536A (en) A kind of kitchen anaerobic digestion biogas slurry combined treatment process
CN104710087B (en) Hypoxia-aerobic comprehensive treatment method for tannery waste water
CN100534928C (en) Short-path deep biological denitrogenation method for city garbage percolate
CN110002594B (en) Device and method for realizing shortcut nitrification-anaerobic ammonia oxidation based on hydroxylamine side inhibition
CN108298687B (en) Biological denitrification method for landfill leachate
CN102153239B (en) Process and system for carrying out high-efficiency denitrification and dephosphorization treatment on urban sewage
CN109761455A (en) A kind of processing method of synthesis and the class pharmaceuticals industry sewage that ferments
CN110436630B (en) Toxic and high-nitrogen-content chemical sewage coupling membrane biological treatment reactor
CN104944689A (en) Device for treating high ammonia-nitrogen wastewater and method thereof
CN110697896B (en) Device and method for deeply treating sludge anaerobic digestion liquid and municipal sewage by combining shortcut nitrification with multi-stage water inflow denitrification ammonia oxidation process
CN106430845A (en) Kitchen garbage wastewater treatment apparatus
CN112979065A (en) Garbage transfer station leachate full-treatment system
CN109205954A (en) Light electrolysis catalysis oxidation, biochemical treatment high-concentration waste hydraulic art
CN101823814B (en) Method and system of integrated denitrifying phosphorus and nitrogen removal
CN113233596A (en) Method for treating middle and late landfill leachate by continuous flow shortcut nitrification/endogenous shortcut denitrification/anaerobic ammonia oxidation integrated process
CN111908618A (en) High ammonia-nitrogen concentration effluent disposal system
CN110171904B (en) Continuous flow AAO dephosphorization and partial denitrification series-connection combined type fixed biological membrane activated sludge autotrophic denitrification device and method
CN105923771A (en) Self-circulation biological denitrification reactor
CN101863592B (en) Leachate treatment method for small town household refuse landfill sites
CN105776749B (en) The catalysis oxidation that organic wastewater is electroplated combines polynary biochemical system and its deep treatment method
CN214218490U (en) Landfill leachate treatment system
CN201343466Y (en) Shortcut biological nitrogen removal teaching experiment device for high ammonia nitrogen garbage percolate
CN111153551A (en) Municipal sewage treatment device and treatment process
CN106082564A (en) A kind of membrane bioreactor sludge reduction sewage disposal technology
CN113998848B (en) Ammonia distillation, gas water seal, rainwater and sludge filtrate mixed wastewater treatment system and method

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication

Application publication date: 20190806

RJ01 Rejection of invention patent application after publication