CN109775926A - A kind of small-sized livestock breeding wastewater integrated treatment combination unit and application method - Google Patents
A kind of small-sized livestock breeding wastewater integrated treatment combination unit and application method Download PDFInfo
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Abstract
The present invention discloses small-sized livestock breeding wastewater integrated treatment combination unit, including logical settler, dilution device, purification device and the photocatalytic degradation device of being connected with each other.The invention also discloses its application methods.Combination unit effective run time of the invention is 8~9 months, and waste water of livestock poultry day integrated treatment amount reaches 200m3More than, the removal rate of major pollutants is as follows: CODcrIt is 90%~98%, ammonia nitrogen is 85%~99%, and total phosphorus is 70%~90%, and the antibiotic such as tetracycline or sulfamido 80%~95% are discharged CODcr<260 mg·L‑1、NH4 +‑N<15 mg·L‑1、TP<5 mg·L‑1.Compared to conventional method, gather drowned flow artificial wet land series connection and photocatalytic degradation, than constructed wetland device or photocatalytic degradation device, COD is used alonecr, ammonia nitrogen, the antibiotic such as total phosphorus and tetracycline removal efficiency be respectively increased 10%~35%.
Description
Technical field
The invention belongs to environment remediation technical field, be related to a kind of small-sized livestock breeding wastewater integrated treatment combination unit and
Application method.
Background technique
Antibiotic is widely used in livestock and poultry cultivation industry as bactericidal properties drug, but to livestock and poultry breeding industry scale
Expand, a large amount of antibiotic is difficult to be completely absorbed metabolism in animal body, excrete with fecaluria, and residual by anaerobic digestion
It stays in biogas slurry.The antibiotic of higher concentration in biogas slurry may make some environmental microorganisms generate resistant gene, and these are anti-
Property gene can pathogenic bacteria transmitting in the environment, and then bigger threat can be caused to the ecosystem and human health.
Compared with sanitary sewage, livestock breeding wastewater high organic content, wherein CODcrUp to 4000~8000mgL-1, BOD5Up to 1500~6000mgL-1, the nutrient also containing there are many, as ammonia nitrogen concentration is up to 800~1500mgL-1.At present
Livestock and poultry breeding industry is the case fatality rate for reducing animal, and some antibiotic compositions added in feed is mostly used to reach above-mentioned mesh
, therefore contain Multiple Classes of Antibiotics in livestock breeding wastewater, such as tetracycline, sulfamido, while antibiotic content is also sharply
Increase.How simultaneously these pollutants of efficient process, be the severe environments problem faced at present.
Artificial swamp is a kind of mature ecological engineering technology for being widely used in sewage treatment, has small investment, operation
The advantages that time is moderate, easy maintenance especially has preferable removal effect to the nutritional ingredients such as nitrogen phosphorus in livestock breeding wastewater,
Be conducive to recycling for various available nutrients.Currently, that there are occupied areas is larger for artificial swamp, operational efficiency and the time it is long by
Into sewage, pollutant concentration situation, the seasonal factors such as plant growth and environmental factor influence.
Photocatalyst is to utilize TiO2As photochemical catalyst, under high voltage mercury lamp radiation, to antibiosis such as tetracyclines
Element carries out light degradation processing.In previous research, seldom catalysis material is applied in the processing of artificial swamp degradation of contaminant,
Only research[1,2,3,4]Mainly by catalysis materials such as titanium blast furnace slags as the filler for being artificial swamp, but this kind of way has
Certain limitation, because that can not receive enough light source irradiations comprehensively, the efficiency of light-catalyzed reaction be cannot be guaranteed.For example,
Yuan Xiangjun[2]Result of study show, slag dosage be 60mgmL-1, intensity of illumination 2.25mWcm-2, light application time
When for 3h, to volume 50ml, concentration 10mgL-1Ciprofloxacin solution removal effect it is best, total removal rate 82%,
Middle photocatalytic activity is 7.96%, accounts for the 9.68% of total removal rate, suction-operated is occupied an leading position.Ji Lingchen[3]Research knot
Fruit points out that titanium-containing blast furnace slag and converter steelmaking slag rely primarily on chemisorption to the removal of nitrogen phosphorus in water, and stone mainly relies on
Physical entrapment.Even if being laid with ultraviolet lamp tube in filler, there is also some potential safety problemss, such as Zhang Zhongjie[5]Research in
Ultraviolet catalytic type packing layer, visible light catalytic type packing layer and wetland are successively arranged from bottom to upper layer in the reaction tank
Plant；Ultraviolet light source pipe is equipped in the ultraviolet catalytic type packing layer.Exist between ultraviolet light source and plant growth
A degree of influence each other.In addition, if directly adding TiO into water body2Powder is influenced by gravity, powder
It can be gradually deposited at the bottom, influence the efficiency of light-catalyzed reaction in various degree.
Bibliography
1. Yuan Heng, the research of the catalysis of 2007. nano photoelectrics and artificial swamp joint process organic pesticide wastewater.Central China
Normal university, master's thesis
2. Yuan Xiangjun, 2015. titanium-containing blast furnace slags make the applied basic research of artificial swamp matrix treatments sewage containing antibiotic.
Nanjing Normal University, master's thesis
3. in morning in season, 2017. grind nitrogen phosphorus ligands performance in sanitary sewage using titanium-containing blast furnace slag as the artificial swamp of matrix
Study carefully.Nanjing Normal University, master's thesis
4. Tao Lei, Zhao Wenxi, Wu Sixuan.A kind of artificial marsh sewage treatment system based on photocatalysis technology.
CN201520189294
5. Zhang Zhongjie, Guo Jifeng, Guo Ping, Guan Wei are saved.A kind of photocatalyst-type artificial wet field facilities for treating sewage.
CN201720304837
Summary of the invention
Goal of the invention: in order to solve to contain multiple pollutant in existing livestock breeding wastewater, such as the ammonia nitrogen and phosphorus of high concentration,
And antibiotic etc., current restorative procedure or measure can not simultaneously efficient process multiple pollutant the problem of, from more efficient comprehensive
Processing livestock breeding wastewater angle is closed, a kind of small-sized waste water of livestock poultry integrated treatment combination unit and application method are provided.
Technical solution: to realize the above-mentioned technical purpose, technical scheme is as follows: a kind of small-sized livestock breeding wastewater
Integrated treatment combination unit, it is described combination unit successively include be connected with each other logical settler, dilution device, purification device and
Photocatalytic degradation device, the settler are made of stainless steel material, including top cylinder shape part and lower hopper shape portion
Point；The dilution device is baffle-box made of rigid plastics material, and the bottom inside baffle-box is equipped with small magnetic stirring dress
It sets；The purification device is that multiple current wetland devices are connected in series, and current wetland device successively includes lowest level from bottom to up
Brickbat head, middle layer stone, upper layer pelelith and the mixing of green zeolite, top layer is soil, grown on soil rehabilitation plant；The light
Catalytic degradation device includes high-pressure sodium lamp and the degradation room for being provided with multiple column biomaterials.
The invention firstly uses concatenated small-sized current wetlands to strengthen to livestock breeding wastewater middle and high concentration nitrogen and phosphorus
Absorption and suction-operated, to achieve the effect that efficiently to remove.In the present invention, it is gone in artificial wetland treatment livestock breeding wastewater
On the basis of removing most of nutrient, antibiotic part in further photoactivation technology degrading waste water, to reach efficiently thorough
The purpose of bottom reason livestock breeding wastewater.
Further, the lower hopper shape sections inner side of the settler is provided with height and surveys induction device, when precipitating reaches
To after certain altitude, automatic prompt handles the precipitating of the solid in sewage in time, to not influence the normal operation of package unit.Institute
It states lower hopper shape section bottom and is equipped with sewage draining exit, be equipped with water outlet at the top cylinder shape partial distance cylinder upper limb.
Further, it is 8~10cm's that diameter is equipped at 2.5~2.8m of the top cylinder shape partial distance cylinder upper limb
Water outlet.
Further, the lowest level brickbat head is with a thickness of 10~20cm, middle layer stone with a thickness of 10~12cm, upper layer fire
With a thickness of 10~12cm, top layer's thickness of soil is 3~5cm for mountain stone and the mixing of green zeolite.From construction cost, water penetration, to nitrogen
The angle of the pollutants adsorption effect such as phosphorus comprehensively considers, and has selected brickbat head, stone and pelelith and green zeolite mixed layer, with
And between three 1: 1: 1~2: 1: 1 proportionate relationship.
Further, the brickbat head diameter is 2~3cm, and blinding diameter is 4~6mm, pelelith and green zeolite diameter
For 5~8mm.
In terms of selecting wetland plant, select that strong environmental adaptability, well developed root system, growth cycle be longer, students with moderate performance
The wetland plant type of object amount to keep the device cycle of operation long, and is stablized, guarantees its long period efficient operation and conveniently
The updating maintenance in later period.As further preferred, the rehabilitation plant is the chrysanthemum fire hose or alternanthera philoxeroides lamp or other are medium
The water plant of biomass.
Further, the degradation room is made of transparent organic glass, and the biomaterial is nano-TiO2It is supported on life
It is made on object charcoal, the biomaterial, which is loaded in nylon wire, is suspended on degradation room by rope draw with vertical direction
In.
To solve the problems, such as to mention in background above technology: enough light source irradiations can not be received comprehensively, photocatalysis is anti-
The efficiency answered cannot be guaranteed and directly add into water body TiO2Powder is influenced by gravity, and powder can gradually sink
Product influences the efficiency etc. of light-catalyzed reaction, in degradation room of the invention, by TiO at the bottom in various degree2According to 15%~
30% proportional load is suspended in water with ribbon on charcoal and waste water comes into full contact with, while also to the full extent
Increase the area of light irradiation to efficiently solve above-mentioned technical problem.
The contents of the present invention further include the application method of the small-sized livestock breeding wastewater integrated treatment combination unit, packet
Include following steps:
1) livestock breeding wastewater is collected, the COD in waste water is measuredcr, ammonia nitrogen, total phosphorus and tetracycline concentration；
2) livestock breeding wastewater to be processed is flowed into the static 2~3h of settler, removes in waste water excrement or other is solid
Body substance, supernatant are flowed out from water outlet；
3) supernatant of step 2) makes COD after dilution device dilutescrLower than 2000mgL-1, ammonia nitrogen 200~
300mg·L-1, total phosphorus concentration is in 60~80mgL-1；
4) supernatant after dilution device dilutes further passes through purification device and carries out deep purifying；
5) supernatant after deep purifying enters photocatalytic degradation device, raw in photocatalytic degradation device by adjusting
Nano-TiO on object charcoal2Load capacity and the irradiation time of high-pressure sodium lamp further remove the antibiotic in waste water.
Wherein, nano-TiO on the charcoal2Load capacity be 15%~30%, the irradiation time 2h of high-pressure sodium lamp~
3h。
In addition, livestock breeding wastewater is after settler and concatenated constructed wetland device, the impurity in water is by into one
Step removal, greatly improving for clarity are conducive to going on smoothly for light-catalyzed reaction.
The water body COD after water outlet, measurement processingcr, ammonia nitrogen, total phosphorus and antibiotic isoconcentration, to further estimate this
The treatment effect of combination unit.
Removal rate=(NEnter water-NWater outlet)/NEnter water* 100%；
Here, NEnter waterFor the total amount for entering each pollutant of water in a period of time, NWater outletFor each pollutant of water outlet in a period of time
Total amount.
Wherein, CODcrUsing potassium dichromate method, the measurement of ammonia nitrogen uses Berthelot spectrophotometry, and total phosphorus yield is adopted
With molybdenum-antimony anti-spectrophotometric method, measurement Solid Phase Extraction-Liquid Chromatography-Tandem Mass Spectrometry (SPE-LC-MS/ of antibiotic component and content
MS) method.
To sum up, in the present invention, be effectively control concentration of wastewater to a suitable concentration, by dilution device to its into
Go the dilution of different proportion, meanwhile, Minitype manual current wetland is connected, is dropped to a certain degree in the case where permission by we
Its low occupied area, and improve the removal efficiency to pollutant.And select strong environmental adaptability, well developed root system, growth
The water plant of period longer, medium biomass, guarantees its long period efficient operation.Most of all, in our research
The antibiotic such as tetracycline or sulfamido removal rate is 80%~95%, wherein the photocatalysis of tetracycline etc. drops in the design of degradation room
The contribution of solution rate has reached 15%~21%, accounts for the 18.8%~22.1% of total removal rate, function and effect are obvious.
The utility model has the advantages that compared with prior art, the present invention has the advantage that of the invention supported based on a kind of small-sized livestock and poultry
Grow waste water integrated treatment combination unit and its method that uses, effective run time is 8~9 months, waste water of livestock poultry day General Office
Reason amount reaches 200m3More than, it is as follows to the removal rate of water body major pollutants: CODcrBe 90%~98%, ammonia nitrogen be 85%~
99%, total phosphorus is 70%~90%, the antibiotic such as tetracycline or sulfamido 80%~95%, wherein being discharged CODcr< 260mg
L-1、NH4 +- N < 15mgL-1, TP < 5mgL-1, reach " livestock and poultry breeding industry pollutant emission standard " (GB 18596-
2001).Compared to conventional method, the effects of gathering drowned flow artificial wet land series connection and photocatalytic degradation, than exclusive use Manual moist
Ground device or photocatalytic degradation device, CODcr, ammonia nitrogen, the antibiotic such as total phosphorus and tetracycline removal efficiency be respectively increased 10%
~35%.Removal situation of the present invention suitable for studying the pollutants such as nitrogen, phosphorus and antibiotic livestock breeding wastewater.
Detailed description of the invention
The structural schematic diagram of the small-sized waste water of livestock poultry integrated treatment combination unit of Fig. 1；
Fig. 2 settler structural schematic diagram；Fig. 2A is settler longitudinal sectional drawing；Fig. 2 B is settler top view；
Fig. 3 dilution device structural schematic diagram；Fig. 3 A is dilution device longitudinal sectional drawing；Fig. 3 B is dilution device top view；
Fig. 4 purification device structural schematic diagram；Fig. 4 A is purification device structure current wetland device series connection longitudinal sectional drawing；Figure
4B is purification device top view；
Fig. 5 photocatalytic degradation device structural schematic diagram；Fig. 5 A is photocatalytic degradation device longitudinal sectional drawing；Fig. 5 B urges for light
Change decomposition apparatus top view.
Specific embodiment
The present invention is explained in further detail below according to shown in attached drawing:
Embodiment 1
A kind of small-sized livestock breeding wastewater integrated treatment combination unit, referring to Fig. 1, combination unit successively includes being connected with each other
Logical settler 1, dilution device 2, purification device 3 and photocatalytic degradation device 4, settler 1 are made of stainless steel material,
Referring to fig. 2, including top cylinder shape part and lower hopper shape part；Drum diameter 3m, height 3m, with a thickness of 10~15mm,
The water outlet 5 that diameter is 8~10cm, lower hopper shape portion are equipped at 2.5~2.8m of top cylinder shape partial distance cylinder upper limb
Point height is 1.5m, and lower hopper shape section bottom is equipped with sewage draining exit 8, for collecting the sediment fraction in waste discharge, and
The part apart from least significant end 1.4m of funnel-like part, the small-sized height of installation one survey induction device 7, automatically control sediment fraction
Regular discharge after reaching a certain height.
Dilution device 2 is baffle-box 11 made of rigid plastics material, having a size of 3m (length) * 2m (width) * 1.5m (height), away from
Waste water water inlet 9 is set from the 11 bottom position 0.5m of baffle-box, dilution entrance 10 and gas vent are set at the top of baffle-box 11
12, water outlet 13 is set in the 11 bottom other side of baffle-box, the bottom inside baffle-box 11 is equipped with small magnetic agitating device 14；
The waste water water inlet 9 of dilution device 2 is connected with the water outlet 5 of settler 1, the waste water that the water outlet 5 of settler 1 is come in
Dilution is added from dilution entrance 10 in as stoste, dilution can for water or other secondary uses water source (such as: rainwater
Equal recycled waters) by small magnetic agitating device mixing stoste and dilution, while stoste and dilution are adjusted by flow straightener
The cartonning flow velocity degree of liquid, to reach different dilution effects；
Purification device 3 is that two current wetland devices are connected in series, and first current wetland device 16 is brick mix structure (brick
+ cement), with a thickness of 2.5~3cm or so, internal layer applies 3 layers of water-repellent paint, having a size of 2m (length) * 1.6m (width) * 0.6m (height).It is latent
Flow wetland device 16 successively includes lowest level brickbat head 22, middle layer stone 21, upper layer pelelith and the mixing of green zeolite from bottom to up
Layer 20, top layer are soil 19, and soil top further includes water layer 18, plant rehabilitation plant 17 on soil 19.Lowest level brickbat head
22 with a thickness of 10~20cm, middle layer stone 21 with a thickness of 10~12cm, upper layer pelelith and green zeolite mixed layer 20 with a thickness of 10
~12cm, for top layer's soil 19 with a thickness of 3~5cm, specific size (diameter) specification of filler is as follows: brickbat head 2~3cm, broken
4~6mm of stone, pelelith and green 5~8mm of zeolite.Rehabilitation plant 17 is the medium biology such as the chrysanthemum fire hose or alternanthera philoxeroides lamp
The water plant of amount.It with internal diameter is that the PPR pipe that 8~10cm length is 1~2m is connected between two current wetland devices.Undercurrent is wet
Corresponding with upper layer pelelith and green zeolite mixed layer 20 position is arranged waterwater entrance 15 on the wall of ground device, waterwater entrance 15 with
The water outlet 13 of dilution device 2 is connected；The bottom of second current wetland device of purification device 3 is provided with water outlet 23.
Photocatalytic degradation device 4 includes room 26 of degrading made of high-pressure sodium lamp 24 and transparent organic glass, in degradation room 26
In be provided with multiple columnar biomaterials 28.Biomaterial 28 is nano-TiO2It is supported on charcoal and is made, biomaterial
28 be loaded in nylon wire 27 by 29 draw of rope with vertical direction be suspended on degradation room 26 in.The position of water inlet 25
In the side of degradation room 26, apart from 0.2~0.4m of top surface, apart from organic glass vertical plane 0.2~0.4m of edge.Water inlet 25 with
The water outlet 23 of purification device 3 is connected.Nano-TiO2It is supported on charcoal (AC), 28 (TiO of biomaterial is made2/ AC),
The proportional concentration TiO of the two2For 5mgL-1, AC about 15mgL-1, the biomaterial 28 of 0.3~0.5kg is loaded in 200 purposes
In nylon wire 27, with column floating mat or buoy [having a size of 5cm (length) * 4cm (width) * 1~1.2m (height)], drawn by rope 29
Effect, upright form exists in water, by high-pressure sodium lamp (150w) irradiate the reaction of photocatalysis Degradation of Antibiotics it is smooth into
Row.
Embodiment 2
The livestock breeding wastewater generated in Intensive Farm of Pig Raising breeding process is collected, COD in waste water is measuredcr, ammonia nitrogen, total phosphorus
Levels with tetracycline are respectively 14500mgL-1、1250mg·L-1、32.1mg·L-1With 2.298 μ gL-1.Using
The small-sized waste water of livestock poultry integrated treatment of the embodiment 1 combines the unit, and precipitating 2h, supernatant fraction are diluted by dilution device first
Afterwards, further by the current wetland tandem arrangement deep purifying in purification device, finally by photocatalytic degradation device
Reason, setting light application time is respectively 1h, 2h and 3h.After illumination 1h, it is discharged CODcr, ammonia nitrogen, total phosphorus and tetracycline be respectively
961mg·L-1、99mg·L-1、10.2mg·L-1With 0.632 μ gL-1, removal efficiency respectively reaches 93.4%, 92.1%,
68.2% and 72%.After illumination 2h, it is discharged CODcr, ammonia nitrogen, total phosphorus and tetracycline be respectively 240mgL-1、14.8mg·L-1、
7.1mg·L-1With 0.154 μ gL-1, removal efficiency respectively reaches 98.3%, 98.8%, 78% and 93%.After illumination 3h, out
Water CODcr, ammonia nitrogen, total phosphorus and tetracycline be respectively 201mgL-1、13.2mg·L-1、6.9mg·L-1With 0.144 μ gL-1,
Removal efficiency respectively reaches 98.6%, 98.9%, 78.5% and 93.7%.Therefore the optimum range of selection light application time is the left side 2h
It is right.
Embodiment 3
The livestock breeding wastewater generated in Intensive Farm of Pig Raising breeding process is collected, COD in waste water is measuredcr, ammonia nitrogen, total phosphorus
Levels with tetracycline are respectively 14500mgL-1、1250mg·L-1、32.1mg·L-1With 2.298 μ gL-1.Using
The small-sized waste water of livestock poultry integrated treatment of the embodiment 1 combines the unit, and precipitating 2h, supernatant fraction are diluted by dilution device first
Afterwards, further by the current wetland tandem arrangement deep purifying in purification device, 2h finally is irradiated in photocatalytic degradation device,
The COD of water outletcr, ammonia nitrogen, total phosphorus and tetracycline levels be respectively 240mgL-1、14.8mg·L-1、7.1mg·L-1With
0.154μg·L-1, removal efficiency respectively reaches 98.3%, 98.8%, 78% and 93%.And only application precipitating fills control treatment
Set, dilution device and a current wetland device handle such livestock breeding wastewater, after handling a cycle, in waste water
CODcr, ammonia nitrogen, total phosphorus and tetracycline levels be respectively 1820mgL-1、146mg·L-1、11.5mg·L-1With 0.875
μg·L-1, removal efficiency respectively reaches 87%, 88.3%, 64% and 62%.Compared with the control, the device is to CODcr, ammonia nitrogen,
The treatment effeciency of total phosphorus and tetracycline difference is high by 11.5%, 10.6%, 18% and 33%.
Embodiment 4
The livestock breeding wastewater generated in intensive chicken farm breeding process is collected, COD in waste water is measuredcr, ammonia nitrogen, total phosphorus
Levels with tetracycline are respectively 3850mgL-1、511mg·L-1、17.3mg·L-1With 3.463 μ gL-1, using this
The small-sized waste water of livestock poultry integrated treatment of embodiment 1 combines the unit, and after precipitating 2.5h first, supernatant fraction is diluted by dilution device
Afterwards, further by irradiating 2h, the COD of water outlet in photocatalytic degradation device after current wetland tandem arrangementcr, ammonia nitrogen, total phosphorus and
The levels of tetracycline are respectively 98mgL-1、26mg·L-1、2.4mg·L-1With 0.513 μ gL-1, removal efficiency difference
Reach 97.5%, 94.9%, 86.1% and 85.2%.Control group is only wet using settler, dilution device and a undercurrent
Ground device handles the waste water, after handling a cycle, COD in waste watercr, ammonia nitrogen, total phosphorus and tetracycline levels difference
For 542mgL-1、104mg·L-1、6.5mg·L-1With 1.519 μ gL-1, removal efficiency respectively reaches 85.9%, 79.6%,
62.4% and 56.1%.Compared with the control, the device is to CODcr, ammonia nitrogen, the treatment effeciency of total phosphorus and tetracycline it is high respectively
11.9%, 16.1%, 27.5% and 34.2%.
Embodiment 5
The livestock breeding wastewater generated in intensive vaccary breeding process is collected, COD in waste water is measuredcr, ammonia nitrogen, total phosphorus
Levels with tetracycline are respectively 2880mgL-1、460.4mg·L-1、16.3mg·L-1With 1.471 μ gL-1, application
The small-sized waste water of livestock poultry integrated treatment of the embodiment 1 combines the unit, and after precipitating 2.5h first, supernatant fraction is dilute by dilution device
After releasing, further by irradiating 2h, the COD of water outlet in photocatalytic degradation device after current wetland tandem arrangementcR, ammonia nitrogen, total
The levels of phosphorus and tetracycline are respectively 67mgL-1、20.2mg·L-1、2.3mg·L-1With 0.145 μ gL-1, removal effect
Rate respectively reaches 97.7%, 95.6%, 85.9% and 90.1%.Control group is only using settler, dilution device and one
Current wetland device handles the waste water, after handling a cycle, COD in waste watercr, ammonia nitrogen, total phosphorus and tetracycline concentration contain
Amount is respectively 356mgL-1、80.9mg·L-1、5.1mg·L-1With 0.293 μ gL-1, removal efficiency respectively reaches 87.6%,
82.4%, 68.7% and 80%.Compared with the control, the device is to CODcr, ammonia nitrogen, the treatment effeciency of total phosphorus and tetracycline it is high respectively
10.3%, 13.8%, 20% and 11.2%.
Embodiment 6
The livestock breeding wastewater generated in intensive chicken farm breeding process is collected, the concentration for measuring tetracycline in waste water contains
Amount is 3.463 μ gL-1, it is combined the unit using the small-sized waste water of livestock poultry integrated treatment of the embodiment 1, after precipitating 2.5h first, on
Clear part is after dilution device dilutes, further by irradiating 2h in photocatalytic degradation device after current wetland tandem arrangement,
The levels of the tetracycline of water outlet are 0.513 μ gL-1, removal efficiency reaches 85.2%.Control group is settler, dilution
Device and one group of current wetland tandem arrangement handle the waste water, after handling a cycle, the levels of tetracycline in waste water
For 1.129 μ gL-1, removal efficiency reaches 67.4%.Compared with the control, wherein tetracycline photocatalysis drops in the design of degradation room
Solution rate improves 17.3%, accounts for the 20.3% of total removal rate.
Claims (8)
1. a kind of small-sized livestock breeding wastewater integrated treatment combination unit, which is characterized in that the combination unit successively includes that
This settler being connected, dilution device, purification device and photocatalytic degradation device, the settler are stainless steel material
It is made, including top cylinder shape part and lower hopper shape part；The dilution device is buffering made of rigid plastics material
Case, baffle-box inside are equipped with small magnetic agitating device；The purification device is that multiple current wetland devices are connected in series, undercurrent
Wetland device successively includes lowest level brickbat head, middle layer stone, upper layer pelelith and green zeolite mixed layer, top layer from bottom to up
For soil, grown on soil rehabilitation plant；The photocatalytic degradation device includes high-pressure sodium lamp and is provided with multiple columns biology
The degradation room of material.
2. small-sized livestock breeding wastewater integrated treatment combination unit according to claim 1, which is characterized in that the precipitating
The lower hopper shape sections inner side of device is provided with height and surveys induction device, and the lower hopper shape section bottom is equipped with sewage draining exit,
The top cylinder shape partial distance cylinder upper limb is equipped with water outlet.
3. small-sized livestock breeding wastewater integrated treatment combination unit according to claim 1 or 2, which is characterized in that described
Lowest level brickbat head mixes with a thickness of 10~20cm, middle layer stone with a thickness of 10~12 cm, upper layer pelelith and green zeolite layer thick
Degree is 10~12 cm, and top layer's thickness of soil is 3~5 cm.
4. small-sized livestock breeding wastewater integrated treatment combination unit according to claim 1 or 2, which is characterized in that described
Brickbat head diameter is 2~3 cm, and blinding diameter is 4~6 mm, and pelelith and green zeolite diameter are 5~8 mm.
5. small-sized livestock breeding wastewater integrated treatment combination unit according to claim 1 or 2, which is characterized in that described
Rehabilitation plant is the water plant of the chrysanthemum fire hose or alternanthera philoxeroides lamp or other medium biomass.
6. small-sized livestock breeding wastewater integrated treatment combination unit according to claim 1 or 2, which is characterized in that described
Degradation room is made of transparent organic glass, and the biomaterial is nano-TiO2It is supported on charcoal and is made, the biology material
Material, which is loaded in nylon wire, to be suspended in degradation room by rope draw with vertical direction.
7. the application method of the described in any item small-sized livestock breeding wastewater integrated treatment combination units of claim 1 ~ 6, special
Sign is, comprising the following steps:
1) livestock breeding wastewater is collected, the COD in waste water is measuredcr, ammonia nitrogen, total phosphorus and tetracycline concentration；
2) livestock breeding wastewater to be processed is flowed into the static 2~3h of settler, removes excrement or other solids in waste water
Matter, supernatant are flowed out from water outlet；
3) supernatant of step 2 makes COD after dilution device dilutescrLower than 2000 mgL-1, ammonia nitrogen is 200~300
mg·L-1, total phosphorus concentration is in 60~80 mgL-1；
4) supernatant after dilution device dilutes further passes through purification device and carries out deep purifying；
5) supernatant after deep purifying enters photocatalytic degradation device, by adjusting charcoal in photocatalytic degradation device
Upper nano-TiO2Load capacity and the irradiation time of high-pressure sodium lamp further remove the antibiotic in waste water.
8. the application method of small-sized livestock breeding wastewater integrated treatment combination unit according to claim 7, feature exist
In nano-TiO on the charcoal2Load capacity be 15~30%, the irradiation time of high-pressure sodium lamp is 1 ~ 3h.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110902939A (en) * | 2019-11-11 | 2020-03-24 | 南京信息工程大学 | Sewage treatment system |
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| CN111517564A (en) * | 2020-04-15 | 2020-08-11 | 黑龙江省农业科学院畜牧兽医分院 | Method for treating and utilizing sewage of farm |
| CN112456663A (en) * | 2020-11-04 | 2021-03-09 | 中国农业科学院农业环境与可持续发展研究所 | Method for treating antibiotics in livestock and poultry breeding sewage |
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Application publication date: 20190521 |