CN105601025B - A kind of breeding wastewater efficient degradation denitrogenation processing system and processing method - Google Patents
A kind of breeding wastewater efficient degradation denitrogenation processing system and processing method Download PDFInfo
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- CN105601025B CN105601025B CN201510695798.0A CN201510695798A CN105601025B CN 105601025 B CN105601025 B CN 105601025B CN 201510695798 A CN201510695798 A CN 201510695798A CN 105601025 B CN105601025 B CN 105601025B
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Abstract
The present invention relates to a kind of breeding wastewater efficient degradation denitrogenation processing system and processing methods, including regulating reservoir connected in sequence, setting pot, feed tank, anaerobic reactor, pre-oxidize nitrosation integral pool, anaerobic ammonia oxidation reactor and effluent recycling pond, the anaerobic reactor is anaerobic internal circulation reactor, waste water after a circle is flowed through in outer shroud cell cavity by entering inner ring cell cavity, anaerobic ammonia oxidation reactor is upflow type anaerobic packed tower, breeding wastewater passes through more than structures and carries out purification reaction successively, it is hydrolyzed respectively, desanding, anaerobism, nitrosation, the reactions such as Anammox, by multistage degradation treatment, noxious pollutant in waste water can be removed efficiently.The present invention combines anaerobic technique and anaerobic ammonia oxidation process, first passes through anaerobism removal COD, then through anaerobic ammonia oxidation process denitrogenation, realize the efficient removal of breeding wastewater high density pollution ingredient, technological operation is easy, stable.
Description
Technical field
The present invention relates to a kind of breeding wastewater efficient degradation denitrogenation processing system and processing methods, belong to sewage disposal technology
Field.
Background technology
In recent years, with cultivation scale it is continuous expand, feeding quantity sharply increases so that a large amount of feces of livestock and poultry
Sewage becomes pollution sources, and the pollution that these farms generate such as cannot get timely processing, will cause high risks to environment, make
Into the deterioration of the ecological environment, animal products quality decline and jeopardize health, the lag of aquaculture pollutant abatement technology is seriously made
The about sustainable development of aquaculture.
Breeding wastewater has the characteristics that high COD, high ammonia nitrogen, and for not mixing the flushing waste water of excrement, COD generally exists
Between 2000~4000mg/L, ammonia nitrogen is up to 300~1800mg/L, at high-concentration waste water generally use anaerobic technique
Reason can carry out a degree of degradation, but Anaerobic Treatment is relatively low to the removal rate of ammonia nitrogen and total nitrogen, leads to useless Organic substance in water
It causes anaerobic effluent that there is low C/N ratios, ammonia nitrogen in high density feature, subsequently carries out traditional nitrification-denitrification technique and be difficult to locate
Reason.Anaerobic ammonia oxidation process is a kind of efficient denitrification technique, and using cultured water as electron acceptor, ammonia nitrogen is as the micro- of electron donor
Ammonia nitrogen in water is converted into nitrogen by biological respinse, and the removal of nitrogen can be realized in a reactor.With it is traditional
Nitrification-denitrification technique is compared, and has many advantages, such as that low energy consumption, production mud is few, economical and efficient, has in the processing of high ammonia-nitrogen wastewater
Huge potentiality.But anaerobic ammonia oxidizing bacteria, as autotrophic bacterium, to the Organic substance in water that gives up, there are very sensitive, breeding wastewater height
The characteristics of COD, can inhibit the activity of anaerobic ammonia oxidizing bacteria, and the inhibition that Anammox reacts is caused even to stop.Therefore it cultivates useless
The degree that water thinks processing to qualified discharge is extremely difficult, and after general farm carries out anaerobic fermentation to waste water, residues are not
Energy direct emission is only used for field irrigation, and scale livestock farming needs the farmland for being equipped with enough area that could dissolve generation
Biogas slurry, for coordinate the crop fertilization period, it is also necessary to build the biogas slurry scratch pool of big volume.The defects of due to prior art, supports
Growing waste water, there are bigger difficulty on treatment effect and processing cost, and most farm's pollution prevention measures is caused not reach
Mark, adversely affects ambient enviroment.
Country's cultivating wastewater purification technology focuses primarily upon two aspects at present, when based on being utilized with recycling, as in
Livestock and poultry farm recycling and pollution disclosed in state patent document CN102225831A (application number 201110085422.X)
Water pollution degree is still higher after the processing of object Zero emission method, and water outlet can only reuse, it is impossible to direct emission；Another kind is to detest
Oxygen --- based on aerobic combination technique, as disclosed in Chinese patent literature CN102807302A (application number 201210307638.0)
The method of livestock and poultry cultivation sewage disposal, but the aerobic treatment process of aeration need to be taken.But above-mentioned process all in the prevalence of
Energy consumption is big, processing speed is slow, efficiency is low, high cost feature, and treated shipwreck is with qualified discharge.Therefore, for foster
The characteristics of growing waste water, exploitation have extremely urgent to the technique of COD, the high removal rate of ammonia nitrogen.
Invention content
Difficult and degradation efficiency is low for the high COD of existing breeding wastewater and high ammonia nitrogen, waste water is unable to qualified discharge
Problem, the present invention provide a kind of breeding wastewater efficient degradation denitrogenation processing system and processing method.
The present invention is achieved through the following technical solutions：
A kind of breeding wastewater efficient degradation denitrogenation processing system, including regulating reservoir connected in sequence, setting pot, feed tank,
Anaerobic reactor, pre-oxidation-nitrosation integral pool, anaerobic ammonia oxidation reactor and effluent recycling pond, the anaerobic reactor
For anaerobic internal circulation reactor, the pre-oxidation-nitrosation integral pool includes inside and outside two layers of cylindrical pool body, the pond body of outer layer
The outer shroud cell cavity of annular is formed between the pond body of internal layer, the pond body of internal layer surrounds inner ring cell cavity, the inner ring cell cavity and outer shroud
Cell cavity is connected, and for waste water by entering inner ring cell cavity after a circle is flowed through in outer shroud cell cavity, the anaerobic ammonia oxidation reactor is upstream
Formula anaerobism packed tower is divided into inhalant region, intermediate filler area, exhalant region inside anaerobic ammonia oxidation reactor from the bottom to top, and centre is filled out
Material area's volume accounts for the 60~70% of reactor volume.
It is currently preferred, training wall is set in pre-oxidation-nitrosation integral pool outer shroud cell cavity, setting paddle in inner ring cell cavity stirs
Machine is mixed, the lateral wall bottom of outer cisterna ambiens chamber is provided with outer shroud cell cavity water inlet, the side wall upper part of interior cisterna ambiens chamber is provided with company
Port is provided with water outlet, water outlet connection outlet pipe, the water outlet and setting pot of regulating reservoir in the sidewall bottom of interior cisterna ambiens chamber
Water inlet connection, the feed inlet of the water outlet of setting pot and feed tank connects, the discharge port of feed tank and anaerobic reactor
Water inlet connects, and the water outlet of anaerobic reactor is connect with the outer shroud cell cavity water inlet of pre-oxidation-nitrosation integral pool, interior cisterna ambiens
The outlet pipe of chamber and the water inlet of anaerobic ammonia oxidation reactor connect, the water outlet connection effluent recycling of anaerobic ammonia oxidation reactor
Pond, the processing water in effluent recycling pond are back in feed tank or in pre-oxidation-nitrosation integral pool.
The outlet side wall of outer shroud cell cavity is lateral wall, and the interior border side wall of outer shroud cell cavity is madial wall, outer shroud cell cavity
The side wall of madial wall namely inner ring cell cavity.
It is further preferred that outer shroud cell cavity water inlet, communication port are located at training wall both sides respectively, the height of training wall with it is pre-
The pond body height of oxidation-nitrosation integral pool is identical, and water outlet is located at communication port on straight line.
It is currently preferred, filled with cyclic annular floating stuffing, multiple lightweights in anaerobic ammonia oxidation reactor intermediate filler area
Filling ball is chained together by connecting rod forms filling ball string, and equipped with multiple filling ball strings, multiple filling ball string is longitudinal side by side
It places, laterally forms multiple lines and multiple rows, in the horizontal direction, filling ball and filling ball spacing are 3~5cm, each filling ball string
Upper and lower ends are fixed by lateral fixed link, which is fixed on the anaerobic ammonia oxidation reactor of setting.
Currently preferred, the light filler ball is the spherical semi soft packing ball of lightweight polypropylene, and filling ball is a diameter of
150mm~200mm, filling ball proportion >=0.95g/cm3, specific surface area >=500 ㎡/m3, porosity of=95%.
Currently preferred, the anaerobic internal circulation reactor is by bottom water distribution area, intermediate reaction area, top three-phase separate
It is formed from device, reaction zone ratio of height to diameter is 2.0~3.5：1.
The processing method of efficient degradation denitrogenation is carried out to breeding wastewater using above-mentioned processing system, it is as follows including step：
(1) animal farm wastewater enters regulating reservoir by collecting system and is hydrolyzed, regulating reservoir hydraulic detention time HRT for 12~
24h；
(2) regulating reservoir water outlet enters setting pot from flowing through feed tank, setting pot hydraulic detention time HRT for 12~for 24 hours,
(3) breeding wastewater after sand setting enters anaerobic reactor progress anaerobic reaction, reaction temperature 30 by feed tank
~35 DEG C, the hydraulic detention time HRT for controlling reactor is 2~4d, reactor COD 3~8kg/ of volumetric loading (m3D), into
Water COD controls are inoculated with anaerobic sludge in 1000~3000mg/L, the anaerobic reactor of initial start-up；
(4) the processing water after anaerobic reaction enters pre-oxidation-nitrosation integral pool, and outer shroud cell cavity hydraulic detention time 2~
3h, inner ring cell cavity 2~3h of hydraulic detention time, inner ring cell cavity are 0.5~1.0mg/ by mixing slowly dissolved oxygen in control pond
L realizes waste water nitrosation；
(5) waste water after nitrosation reaction enters anaerobic ammonia oxidation reactor progress Anammox reaction, reaction temperature
It is 30~35 DEG C, hydraulic detention time 6~for 24 hours；
(6) waste water is discharged after Anammox reacts into effluent recycling pond, and inside points water outlet in effluent recycling pond carries out
Reflux, residue water outlet can qualified discharge, the reflux ratio in effluent recycling pond to anaerobic reactor is 0.5~2:1, effluent recycling pond is extremely
The reflux ratio of pre-oxidation-nitrosation integral pool is 0.5~1：1.
If concentration is more than anaerobic reactor water inlet index optimum range, reflux of the effluent recycling pond to anaerobic reactor is increased
Than.
Currently preferred, setting pot is horizontal-flow grit chamber or aerated grit chamber, and horizontal-flow grit chamber or aerated grit chamber are
The prior art.
Routinely technology inoculation anaerobic sludge carries out present invention inoculation anaerobic sludge.
It is currently preferred, in step (5), during initial start-up anaerobic ammonia oxidation reactor, detest in inoculation on floating stuffing
Anaerobic ammonium oxidation sludge, vaccination ways for first floating stuffing is soaked in 12 in anaerobic ammonium oxidation sludge~for 24 hours, then suspension is filled out
After material is packed into reactor, with twice daily, the frequency cycle stream of each half an hour adds the sludge in anaerobic ammonia oxidation reactor
Biofilm is carried out, fed-batch mode is upper entering and lower leaving, and stream rate of acceleration is 5~10L/minm3Chi Rong, the operation 3 that repeats the above steps~
5d successfully starts up Anammox reaction.
It is further preferred that during initial start-up anaerobic ammonia oxidation reactor, by anaerobic ammonium oxidation sludge, anaerobically digested sludge
The mixing sludge of composition is inoculated on filler sludge, and the ratio of anaerobic ammonium oxidation sludge and anaerobically digested sludge is (2~3): 1.
After present invention startup is stable, the removal rate of ammonia nitrogen, COD to breeding wastewater can reach more than 90%, always
The removal rate of nitrogen is more than 80%.
Regulating reservoir, setting pot, feed tank design parameter selected according to routine techniques.
The spherical semi soft packing of lightweight polypropylene be the prior art, can market buy.
If be not particularly limited in the method for the present invention, selected by this field routine techniques.
Hydrolysis, sand setting stage, breeding wastewater COD degradation rate 15~20%, ammonia nitrogen degradation rate 30~40, total nitrogen degradation rate 10
~20%；Anaerobic treatment stage, waste water COD degradation rate 75~80%, ammonia nitrogen degradation rate 30~40, total nitrogen degradation rate 10~
20%；The Anammox stage, waste water COD degradation rate 10~20%, ammonia nitrogen degradation rate 75~85, total nitrogen degradation rate 70~
85%；After present invention startup is stable, the removal rate of ammonia nitrogen, COD to breeding wastewater can reach more than 90%, total nitrogen
Removal rate is more than 80%.
Compared with prior art, excellent results of the invention are as follows：
1st, high treating effect, COD degradation and nitric efficiency are high.The present invention distinguishes the major function of degrade COD and denitrogenation
Anaerobism section and Anammox section are placed on, anaerobic degradation effect is improved, and pass through setting nitrosation using high efficiency anaerobic reactor
Pond provides the condition for being suitble to Anammox reaction, can reach good treatment effect.
2nd, anti impulsion load.The present invention carries out organic assembling using kinds of processes, and each operation stage is by that can adjust
Reflux ratio is controlled, and is adapted to large range of water quality section, can also adapt to the fluctuation of water, keeps effluent quality steady
It is fixed.
3rd, processing cost is low.The breeding wastewater of present invention processing high concentration, using anaerobism and anaerobic ammonia oxidation process, avoids
Aeration, entire technique only need power consumptions, the energy consumptions such as promotion and stirring at low speed less.
4th, reactor organisms amount of the invention is big, reliable.The present invention is anti-using anaerobic filter progress Anammox
Should, using filler of good performance, the microorganism species biomass being attached to is big, and it is slow to overcome the breeding of Anammox flora
The characteristics of, so as to realize the stability for the treatment of effect.
5th, animal farm wastewater is discharged COD, BOD, TSS and NH after high efficiency reactor system of the present invention processing3- N can be with
Efficient degradation efficiently solves the serious pollution problem caused by it can not handle of current animal farm wastewater.
6th, anaerobic reaction of the invention is high for strictly anaerobic treatment effeciency, and the residence time is short, in anaerobism and Anammox
Between pre-oxidation-nitrosation integral pool pond is set, the outer shroud cell cavity of pre-oxidation-nitrosation integral pool passes through the waterpower item of annular
Part, faster flow velocity realize that ammonia is escaped from useless water part, improve ammonia nitrogen removal frank, and be transitioned into and detest from anaerobic environment
Anaerobic ammonium oxidation environment, anaerobism increase the removal rate of COD with pre-oxidation, and making the removal rate of COD, this is prior art institute up to 92%
It can not realize, bring unexpected technique effect, make time that aerobic-anaerobic reacts more in the prior art more than ten to several
The time of ten hours greatly shortens, hence it is evident that improves treatment effeciency.
7th, good carrier of the cyclic annular floating stuffing of the present invention as the culture strain, accelerates the culture and enrichment of the strain,
The loss of strain is reduced simultaneously, and the setting of cyclic annular floating stuffing makes strain be distributed in reactor more uniformly, increases strain
The area of distribution accelerates the culture and enrichment of strain, and making the reaction of anaerobism ammonia oxygen, more fully thoroughly the maximum for keeping the strain is living
Property reduce to the greatest extent simultaneously the strain loss ensure Anammox denitrogenation processing stable and high effective operation.
Description of the drawings
Fig. 1 is breeding wastewater efficient degradation denitrogenation processing system structure diagram of the present invention.
Fig. 2 is pre-oxidation-nitrosation integral pool planar structure schematic diagram.
Wherein：1st, regulating reservoir；2nd, setting pot；3rd, feed tank；4th, anaerobic reactor；5th, pre-oxidation-nitrosation integral pool；
6th, anaerobic ammonia oxidation reactor；7th, effluent recycling pond；8th, outer shroud cell cavity water inlet；9th, training wall；10th, communication port；11st, interior cisterna ambiens
The side wall of chamber；12nd, outlet pipe.
Specific embodiment
Below by specific embodiment and with reference to attached drawing, the present invention will be further described, but not limited to this.
Non- elaborate presses state of the art in embodiment.
The spherical semi soft packing of lightweight polypropylene in embodiment is purchased from Yixing City Sheng Da plastics Co., Ltd.
IC or EGSB anaerobic reactor endoparticle sludge of the anaerobic sludge from operational excellence.
Sludge in anaerobic ammonia oxidation reactor of the anaerobic ammonium oxidation sludge from operational excellence.
Embodiment 1
A kind of breeding wastewater efficient degradation denitrogenation processing system, structure as shown in Figure 1 and Figure 2, including adjusting connected in sequence
Pond 1, setting pot 2, feed tank 3, anaerobic reactor 4, pre-oxidation-nitrosation integral pool 5, anaerobic ammonia oxidation reactor 6 and water outlet
Backflow pool 7, anaerobic reactor 4 are anaerobic internal circulation reactor, and pre-oxidation-nitrosation integral pool 5 includes inside and outside two layers cylinder
Pond body forms the outer shroud cell cavity of annular between the pond body of outer layer and the pond body of internal layer, the pond body of internal layer surrounds inner ring cell cavity, described
Inner ring cell cavity is connected with outer shroud cell cavity, sets training wall 9 in pre-oxidation-nitrosation integral pool outer shroud cell cavity, is set in inner ring cell cavity
Paddle stirrer is provided with outer shroud cell cavity water inlet 8 in the lateral wall bottom of outer cisterna ambiens chamber, is set in the side wall upper part of interior cisterna ambiens chamber
Communication port 10 is equipped with, the sidewall bottom of interior cisterna ambiens chamber is provided with water outlet, water outlet connection outlet pipe 12, waste water is by outer cisterna ambiens
Intracavitary enters inner ring cell cavity after flowing through a circle, and outer shroud cell cavity water inlet 8, communication port 10 are located at 9 both sides of training wall, training wall respectively
9 height is identical with the pond body height of pre-oxidation-nitrosation integral pool, and water outlet is located at communication port 10 on straight line.It adjusts
The water outlet in section pond 1 is connect with the water inlet of setting pot 2, and the water outlet of setting pot 2 is connect with the feed inlet of feed tank 3, charging
The discharge port in pond 3 is connect with the water inlet of anaerobic reactor 4, water outlet and the pre-oxidation-nitrosation integral pool of anaerobic reactor 4
5 outer shroud cell cavity water inlet 8 connects, and the outlet pipe 10 of inner ring cell cavity is connect with the water inlet of anaerobic ammonia oxidation reactor 6, anaerobism
The water outlet connection effluent recycling pond 7 of ammonia oxidation reactor 6, the processing water in effluent recycling pond 7 is back in feed tank 3 or pre- oxygen
In change-nitrosation integral pool 5.The anaerobic ammonia oxidation reactor 6 be upflow type anaerobic packed tower, anaerobic ammonia oxidation reactor 6
Inside is divided into inhalant region, intermediate filler area, exhalant region from the bottom to top, intermediate filler area volume account for reactor volume 60~
70%.The anaerobic internal circulation reactor is made of bottom water distribution area, intermediate reaction area, top three phase separator, reaction zone
Ratio of height to diameter is 2.0~3.5：1.
Filled with cyclic annular floating stuffing in 6 intermediate filler area of anaerobic ammonia oxidation reactor, multiple light filler balls are by connecting
Bar, which is chained together, forms filling ball string, and equipped with multiple filling ball strings, multiple filling ball string is placed longitudinally side by side, laterally forms
Multiple lines and multiple rows, in the horizontal direction, filling ball and filling ball spacing are 3~5cm, and the upper and lower ends of each filling ball string are by transverse direction
Fixed link is fixed, which is fixed on the anaerobic ammonia oxidation reactor of setting.Light filler ball is spherical for lightweight polypropylene
Semi soft packing ball, a diameter of 150mm~200mm of filling ball, filling ball proportion >=0.95g/cm3, the ㎡ of specific surface area >=500/
m3, porosity of=95%.
Currently preferred, the anaerobic internal circulation reactor is by bottom water distribution area, intermediate reaction area, top three-phase separate
It is formed from device, reaction zone ratio of height to diameter is 2.0~3.5：1.
Embodiment 2
The dairy cow farm waste water of 30t/d is handled, waste water quality is COD 3000~4000mg/L, NH4- N 550~
650mg/L, pH 7.8~8.0,
The processing method of efficient degradation denitrogenation is carried out to breeding wastewater using 1 processing system of embodiment,
Adjust pool volume 30m3, size is length × width × height=5.0 × 3.0 × 2.0m；Feed pool volume 30m3, size is
Length × width × height=4.0 × 3.0 × 2.5m；Setting pot uses horizontal flow type grit chamber, volume 7.2m3, size is length × width × height
=6.0 × 1.0 × 1.2m；Anaerobic reactor uses IC reactors, volume 100m3, size for diameter × height=φ 3.6 ×
9.8m；Pre-oxidation-denitrification one pool volume 6m3, size is diameter × height=1.5 × 1.0m of φ, annular diameters 1.06m, interior
Cisterna ambiens intracavitary installs paddle stirrer, stirring acc power 0.75kW；Anaerobic ammonia oxidation reactor uses Upflow anaerobic filter, holds
Product 30m3, size is diameter × height=4.2 × 7.2m of φ；Reactor is intake by bottom, and top water outlet, middle section is filler
Area is filled, packing ratio 60% using the spherical semi soft packing of lightweight polypropylene, filler diameter 150mm.Effluent recycling pond
Volume 60m3, size is length × width × height=5.0 × 4.0 × 3.0m.
It is as follows including step：
(1) animal farm wastewater enters regulating reservoir by collecting system and is hydrolyzed, and regulating reservoir hydraulic detention time HRT is 20h；
(2) regulating reservoir water outlet enters setting pot from feed tank is flowed through, and setting pot hydraulic detention time HRT is 20h,
(3) breeding wastewater after sand setting enters anaerobic reactor progress anaerobic reaction, reaction temperature 32 by feed tank
DEG C, the hydraulic detention time HRT for controlling reactor is 3d, reactor COD 3~8kg/ of volumetric loading (m3D), influent COD control
System is inoculated with anaerobic sludge in 2000mg/L, the anaerobic reactor of initial start-up；(4) the processing water after anaerobic reaction enters pre- oxygen
Change-nitrosation integral pool, outer shroud cell cavity hydraulic detention time 2h, inner ring cell cavity hydraulic detention time 3h, inner ring cell cavity passes through slow
Dissolved oxygen is 0.8mg/L in fast mixing control pond, realizes waste water nitrosation；
(5) waste water after nitrosation reaction enters anaerobic ammonia oxidation reactor progress Anammox reaction, reaction temperature
It is 32 DEG C, hydraulic detention time 6~for 24 hours；
(6) waste water is discharged after Anammox reacts into effluent recycling pond, and inside points water outlet in effluent recycling pond carries out
Reflux, residue water outlet can qualified discharge, the reflux ratio in effluent recycling pond to anaerobic reactor is 0.5~2:1, effluent recycling pond is extremely
The reflux ratio of pre-oxidation-nitrosation integral pool is 0.5~1：1.
During initial start-up anaerobic ammonia oxidation reactor, in being inoculated with anaerobic ammonium oxidation sludge on floating stuffing, vaccination ways are
First floating stuffing is soaked in 12 in anaerobic ammonium oxidation sludge~for 24 hours, after floating stuffing then is packed into reactor, with daily
Twice, the frequency cycle stream of each half an hour adds the sludge in anaerobic ammonia oxidation reactor to carry out biofilm, and fed-batch mode is enterprising
Under go out, stream rate of acceleration be 5~10L/minm3Chi Rong, repeat the above steps 3~5d of operation, and it is anti-to successfully start up Anammox
It should.
Start it is stable after, water outlet COD can be less than 350mg/L, ammonia nitrogen be less than 75mg/L.
Embodiment 3
The dry cleaning up excrement piggery wastewater of 100t/d is handled, breeding wastewater water quality is COD2000~3000mg/L, NH4-N 600
~700mg/L, pH 7.2~7.8
The processing method of efficient degradation denitrogenation is carried out to breeding wastewater using 1 processing system of embodiment,
Adjust pool volume 100m3, size is length × width × height=5.0 × 5.0 × 4.0m；Feed pool volume 60m3, size is
Length × width × height=5.0 × 4.0 × 3.0m；Setting pot uses horizontal flow type grit chamber, volume 24m3, size for length × width × height=
10.0×2.0×1.2m；Anaerobic reactor uses IC reactors, volume 300m3, size for diameter × height=φ 5.2 ×
14.0m；
Pre-oxidation-denitrification one pool volume 21m3, size be diameter × height=4.2 × 1.5m of φ, annular diameters
3.0m, the interior installation paddle stirrer of inner ring cell cavity, stirring acc power 1.5kW；Anaerobic ammonia oxidation reactor uses upflow type anaerobic
Filter, volume 100m3, size is diameter × height=4.2 × 7.2m of φ；Reactor is intake by bottom, top water outlet, middle section
It for packing area, is filled using the spherical semi soft packing of lightweight polypropylene, packing ratio 60%, filler diameter 200mm.Water outlet
Flow back pool volume 120m3, size is length × width × height=8.0 × 5.0 × 3.0m.
It is as follows including step：
(1) animal farm wastewater enters regulating reservoir by collecting system and is hydrolyzed, and regulating reservoir hydraulic detention time HRT is for 24 hours；
(2) regulating reservoir water outlet enters setting pot from flowing through feed tank, setting pot hydraulic detention time HRT for for 24 hours,
(3) breeding wastewater after sand setting enters anaerobic reactor progress anaerobic reaction, reaction temperature 32 by feed tank
DEG C, the hydraulic detention time HRT for controlling reactor is 4d, reactor COD 3~5kg/ of volumetric loading (m3D), influent COD control
System is inoculated with anaerobic sludge in 2000mg/L, the anaerobic reactor of initial start-up；
(4) the processing water after anaerobic reaction enters pre-oxidation-nitrosation integral pool, outer shroud cell cavity hydraulic detention time 3h,
Inner ring cell cavity hydraulic detention time 2h, inner ring cell cavity are 0.8mg/L by mixing slowly dissolved oxygen in control pond, realize that waste water is sub-
Nitrification；
(5) waste water after nitrosation reaction enters anaerobic ammonia oxidation reactor progress Anammox reaction, reaction temperature
It is 33 DEG C, 6~18h of hydraulic detention time；
(6) waste water is discharged after Anammox reacts into effluent recycling pond, and inside points water outlet in effluent recycling pond carries out
Reflux, residue water outlet can qualified discharge, the reflux ratio in effluent recycling pond to anaerobic reactor is 0.5~1:1, effluent recycling pond is extremely
The reflux ratio of pre-oxidation-nitrosation integral pool is 0.5~1：1.
During initial start-up anaerobic ammonia oxidation reactor, in being inoculated with anaerobic ammonium oxidation sludge on floating stuffing, vaccination ways are
First floating stuffing is soaked in 12 in anaerobic ammonium oxidation sludge~for 24 hours, after floating stuffing then is packed into reactor, with daily
Twice, the frequency cycle stream of each half an hour adds the sludge in anaerobic ammonia oxidation reactor to carry out biofilm, and fed-batch mode is enterprising
Under go out, stream rate of acceleration be 5~10L/minm3Chi Rong, repeat the above steps 3~5d of operation, and it is anti-to successfully start up Anammox
It should.
It is 30~35 DEG C that reaction process, which keeps feed temperature in anaerobic reactor and anaerobic ammonia oxidation reactor,.Start operation
After stabilization, water outlet COD can be less than 350mg/L, and ammonia nitrogen is less than 80mg/L, meets《Livestock and poultry breeding industry pollutant emission standard》.
Embodiment 4
The breeding layer chicken field waste water of 50t/d is handled, after separation of solid and liquid, waste water quality is 3000~5000mg/L of COD,
NH4- N 700~900mg/L, pH 7~8
The processing method of efficient degradation denitrogenation is carried out to breeding wastewater using 1 processing system of embodiment,
Adjust pool volume 60m3, size is length × width × height=5.0 × 4.0 × 3.0m；Feed pool volume 30m3, size is
Length × width × height=5.0 × 3.0 × 2.0m；Setting pot uses horizontal flow type grit chamber, volume 12m3, size for length × width × height=
6.0×2.0×1.2m；Anaerobic reactor uses IC reactors, volume 180m3, size is diameter × height=4.4 × 12.0m of φ；
Pre-oxidation-denitrification one pool volume 12m3, size be diameter × height=3.2 × 1.5m of φ, annular diameters 2.26m, interior cisterna ambiens
Intracavitary installs paddle stirrer, stirring acc power 0.75kW；Anaerobic ammonia oxidation reactor uses Upflow anaerobic filter, volume
100m3, size is diameter × height=42 × 72m of φ；Reactor is intake by bottom, and top water outlet, middle section is packing area, is adopted
It is filled with the spherical semi soft packing of lightweight polypropylene, packing ratio 65%, filler diameter 150mm.Anammox reacts
Device hydraulic detention time 12~for 24 hours.Effluent recycling pool volume 75m3, size is length × width × height=5.0 × 5.0 × 3.0m.
It is as follows including step：
(1) animal farm wastewater enters regulating reservoir by collecting system and is hydrolyzed, and regulating reservoir hydraulic detention time HRT is 20h；
(2) regulating reservoir water outlet enters setting pot from feed tank is flowed through, and setting pot hydraulic detention time HRT is 20h,
(3) breeding wastewater after sand setting enters anaerobic reactor progress anaerobic reaction, reaction temperature 31 by feed tank
DEG C, the hydraulic detention time HRT for controlling reactor is 5d, reactor COD 4~5kg/ of volumetric loading (m3D), influent COD control
System is inoculated with anaerobic sludge in 2000mg/L, the anaerobic reactor of initial start-up；
(4) the processing water after anaerobic reaction enters pre-oxidation-nitrosation integral pool, outer shroud cell cavity hydraulic detention time 2h,
Inner ring cell cavity hydraulic detention time 2h, inner ring cell cavity are 0.8mg/L by mixing slowly dissolved oxygen in control pond, realize that waste water is sub-
Nitrification；
(5) waste water after nitrosation reaction enters anaerobic ammonia oxidation reactor progress Anammox reaction, reaction temperature
It is 32 DEG C, 6~18h of hydraulic detention time；
(6) waste water is discharged after Anammox reacts into effluent recycling pond, and inside points water outlet in effluent recycling pond carries out
Reflux, residue water outlet can qualified discharge, the reflux ratio in effluent recycling pond to anaerobic reactor is 1~2.5:1；Effluent recycling pond is extremely
The reflux ratio of pre-oxidation-denitrification integral pool is 0.5~1.5：1.
During initial start-up anaerobic ammonia oxidation reactor, in being inoculated with anaerobic ammonium oxidation sludge on floating stuffing, vaccination ways are
First floating stuffing is soaked in 12 in anaerobic ammonium oxidation sludge~for 24 hours, after floating stuffing then is packed into reactor, with daily
Twice, the frequency cycle stream of each half an hour adds the sludge in anaerobic ammonia oxidation reactor to carry out biofilm, and fed-batch mode is enterprising
Under go out, stream rate of acceleration be 5~10L/minm3Chi Rong, repeat the above steps 3~5d of operation, and it is anti-to successfully start up Anammox
It should.
It is 30~35 DEG C that reaction process, which keeps feed temperature in anaerobic reactor and anaerobic ammonia oxidation reactor,.Start operation
After stabilization, water outlet COD can be less than 400mg/L, and ammonia nitrogen is less than 80mg/L, meets《Livestock and poultry breeding industry pollutant emission standard》.
Processing method described in embodiment 2-4 has different degrees of removal, each stage to pollutant each in breeding wastewater
It is as shown in table 1 below to the degradation rate of pollutant.
Table 1
| Project | COD removal rates (%) | Ammonia nitrogen removal frank (%) | Nitrogen removal rate (%) |
| Embodiment 2 | Embodiment 3 | Embodiment 4 | |
| Hydrolyze the sand setting stage | 15~20 | 20~30 | 20~30 |
| Anaerobic treatment stage | 75~80 | 10~20 | 10~20 |
| The Anammox stage | 20~30 | 80~85 | 75~80 |
| System total removal rate | 85~95 | 85~95 | 80~90 |
Comparative example 1
It is different with the processing method described in embodiment 1 for carrying out efficient degradation denitrogenation to breeding wastewater using processing system
Part is：
The comparative example does not use anaerobic reaction, is directly entered nitrosation reaction.
Comparative example 2
It is different with the processing method described in embodiment 1 for carrying out efficient degradation denitrogenation to breeding wastewater using processing system
Part is：The comparative example does not use pre-oxidation-nitrosation, is directly entered Anammox reaction.
The processing method of embodiment 2-4 and the processing method of comparative example 1-2 are subjected to treatment effect comparison, see the table below 2 institutes
Show
Table 2
The comparative example 1, the total COD removal rates of the system of comparative example 2, system total ammonia nitrogen removal rate, total it can be seen from upper table 2
Nitrogen removal efficiency is far smaller than the embodiment of the present invention 2-4's, the present invention by setting pot, anaerobic reaction, pre-oxidation-nitrosation,
Anammox reacts, and the residence time is short, pre-oxidation-nitrosation integral pool pond is set between anaerobism and Anammox, in advance
The outer shroud cell cavity of oxidation-nitrosation integral pool realizes ammonia from useless water part by the hydraulics of annular, faster flow velocity
Escape improves ammonia nitrogen removal frank, and is transitioned into Anammox environment from anaerobic environment, and anaerobism increases COD with pre-oxidation
Removal rate, make the removal rate of COD up to 92%.
Claims (6)
1. a kind of breeding wastewater efficient degradation denitrogenation processing system, including regulating reservoir connected in sequence, setting pot, feed tank, detests
Oxygen reactor, pre-oxidation-nitrosation integral pool, anaerobic ammonia oxidation reactor and effluent recycling pond, the anaerobic reactor are
Anaerobic internal circulation reactor, the pre-oxidation-nitrosation integral pool include inside and outside two layers of cylindrical pool body, the pond body of outer layer with
The outer shroud cell cavity of annular is formed between the pond body of internal layer, the pond body of internal layer surrounds inner ring cell cavity, the inner ring cell cavity and outer cisterna ambiens
Chamber is connected, and for waste water by entering inner ring cell cavity after a circle is flowed through in outer shroud cell cavity, the anaerobic ammonia oxidation reactor is up flow type
Anaerobism packed tower is divided into inhalant region, intermediate filler area, exhalant region, intermediate filler inside anaerobic ammonia oxidation reactor from the bottom to top
Area's volume accounts for the 60 ~ 70% of reactor volume；Training wall is set in pre-oxidation-nitrosation integral pool outer shroud cell cavity, is set in inner ring cell cavity
Paddle stirrer is provided with outer shroud cell cavity water inlet in the lateral wall bottom of outer cisterna ambiens chamber, is set in the side wall upper part of interior cisterna ambiens chamber
Be equipped with communication port, the sidewall bottom of interior cisterna ambiens chamber be provided with water outlet, water outlet connection outlet pipe, the water outlet of regulating reservoir with
The water inlet connection of setting pot, the water outlet of setting pot and the feed inlet of feed tank connect, and the discharge port and anaerobism of feed tank are anti-
The water inlet of device is answered to connect, the water outlet of anaerobic reactor is connect with the outer shroud cell cavity water inlet of pre-oxidation-nitrosation integral pool,
The outlet pipe of inner ring cell cavity and the water inlet of anaerobic ammonia oxidation reactor connect, and the water outlet of anaerobic ammonia oxidation reactor connects out
Water backflow pool, the processing water in effluent recycling pond are back in feed tank or in pre-oxidation-nitrosation integral pool, the water inlet of outer shroud cell cavity
Mouth, communication port are located at training wall both sides respectively, and the height of training wall is identical with the pond body height of pre-oxidation-nitrosation integral pool,
Water outlet is located at communication port on straight line, and the anaerobic internal circulation reactor is by bottom water distribution area, intermediate reaction area, top
Portion's three phase separator composition, reaction zone ratio of height to diameter are 2.0~3.5：1.
2. breeding wastewater efficient degradation denitrogenation processing system according to claim 1, which is characterized in that Anammox is anti-
Filled with cyclic annular floating stuffing in Ying Qi intermediate fillers area, multiple light filler balls are chained together by connecting rod forms filling ball
String, equipped with multiple filling ball strings, multiple filling ball string is placed longitudinally side by side, laterally forms multiple lines and multiple rows, in the horizontal direction,
Filling ball and filling ball spacing are 3~5cm, and the upper and lower ends of each filling ball string are fixed by lateral fixed link, which consolidates
It is scheduled on the anaerobic ammonia oxidation reactor of setting.
3. breeding wastewater efficient degradation denitrogenation processing system according to claim 2, which is characterized in that the light filler
Ball be the spherical semi soft packing ball of lightweight polypropylene, a diameter of 150mm ~ 200mm of filling ball, filling ball proportion >=0.95g/cm3,
Specific surface area >=500 ㎡/m3, porosity of=95%.
4. the processing method of efficient degradation denitrogenation is carried out to breeding wastewater using processing system described in claim 1, including step
It is rapid as follows：
（1）Animal farm wastewater enters regulating reservoir by collecting system and is hydrolyzed, regulating reservoir hydraulic detention time HRT for 12~for 24 hours；
（2）Regulating reservoir water outlet enters setting pot from flowing through feed tank, setting pot hydraulic detention time HRT for 12~for 24 hours,
（3）Breeding wastewater after sand setting enters anaerobic reactor by feed tank and carries out anaerobic reaction, and reaction temperature is 30~35
DEG C, the hydraulic detention time HRT for controlling reactor is 2~4d, 3~8kg/ of reactor COD volumetric loadings（m³·d）, influent COD
Control is inoculated with anaerobic sludge in 1000 ~ 3000 mg/L, the anaerobic reactor of initial start-up；
（4）Processing water after anaerobic reaction enters pre-oxidation-nitrosation integral pool, outer shroud cell cavity hydraulic detention time 2 ~ 3h, interior
Cisterna ambiens chamber 2 ~ 3h of hydraulic detention time, inner ring cell cavity are 0.5 ~ 1.0mg/L by mixing slowly dissolved oxygen in control pond, are realized useless
Water nitrosation；
（5）Waste water after nitrosation reaction enters anaerobic ammonia oxidation reactor and carries out Anammox reaction, reaction temperature for 30 ~
35 DEG C, hydraulic detention time 6 ~ for 24 hours；
（6）Waste water is discharged after Anammox reacts into effluent recycling pond, and inside points water outlet in effluent recycling pond flows back,
Residue water outlet can qualified discharge, the reflux ratio in effluent recycling pond to anaerobic reactor is 0.5 ~ 2:1, effluent recycling pond to pre- oxygen
The reflux ratio of change-nitrosation integral pool is 0.5 ~ 1：1.
5. the processing method according to claim 4 that efficient degradation denitrogenation is carried out to breeding wastewater, which is characterized in that step
（5）In, during initial start-up anaerobic ammonia oxidation reactor, in being inoculated with anaerobic ammonium oxidation sludge on floating stuffing, vaccination ways is first
Floating stuffing is soaked in 12 in anaerobic ammonium oxidation sludge ~ for 24 hours, after floating stuffing then is packed into reactor, with daily two
Secondary, the frequency cycle stream of each half an hour adds the sludge in anaerobic ammonia oxidation reactor to carry out biofilm, under fed-batch mode is enterprising
Go out, stream rate of acceleration is held for 5 ~ 10L/minm3 ponds, and repeat the above steps 3 ~ 5d of operation, successfully starts up Anammox reaction.
6. the processing method according to claim 4 that efficient degradation denitrogenation is carried out to breeding wastewater, which is characterized in that first
When starting anaerobic ammonia oxidation reactor, the mixing sludge that anaerobic ammonium oxidation sludge, anaerobically digested sludge form is inoculated into filler
On sludge, the ratio of anaerobic ammonium oxidation sludge and anaerobically digested sludge is（2~3）:1.
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| CN101746925A (en) * | 2009-12-14 | 2010-06-23 | 朱杰 | New combined process for treating and standardizing high-concentration culture waste water |
| CN103922538A (en) * | 2014-04-09 | 2014-07-16 | 无锡市新都环保科技有限公司 | Livestock and poultry breeding wastewater treatment method |
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| CN101746925A (en) * | 2009-12-14 | 2010-06-23 | 朱杰 | New combined process for treating and standardizing high-concentration culture waste water |
| CN103922538A (en) * | 2014-04-09 | 2014-07-16 | 无锡市新都环保科技有限公司 | Livestock and poultry breeding wastewater treatment method |
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