CN107265642A - A kind of drawer type biofilter using composite slow release carbon source as filler - Google Patents
A kind of drawer type biofilter using composite slow release carbon source as filler Download PDFInfo
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- CN107265642A CN107265642A CN201710583909.8A CN201710583909A CN107265642A CN 107265642 A CN107265642 A CN 107265642A CN 201710583909 A CN201710583909 A CN 201710583909A CN 107265642 A CN107265642 A CN 107265642A
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- drawer
- filler
- slow release
- water
- release carbon
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Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/301—Aerobic and anaerobic treatment in the same reactor
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F2003/001—Biological treatment of water, waste water, or sewage using granular carriers or supports for the microorganisms
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F2003/001—Biological treatment of water, waste water, or sewage using granular carriers or supports for the microorganisms
- C02F2003/003—Biological treatment of water, waste water, or sewage using granular carriers or supports for the microorganisms using activated carbon or the like
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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- Life Sciences & Earth Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Biological Treatment Of Waste Water (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The invention discloses a kind of drawer type biofilter using composite slow release carbon source as filler, including：Housing, exhaust outlet, water distribution unit, drawer unit, supporting layer and delivery port, wherein, water distribution unit is used to accessing pending water being distributed to drawer unit, drawer unit is used to carry out filtration treatment to accessing pending water, including drawer and the composite slow release carbon filler being contained in the drawer, supporting layer includes sand grains and supporting plate, below drawer unit, delivery port is located at the bottom of housing, for discharging the water after ammonia nitrogen absorption processing, exhaust outlet is located at the top of housing, is connected by flange, for N in course of reaction2Discharge.Composite slow release carbon filler is formed as adsorption layer and cohesive material by agricultural wastes, absorption basic mineral as supporting layer by co-blended parcel, generally cylindric, graininess or spherical, a diameter of 3 6mm, and porosity is 50% 60%.
Description
Technical field
The invention belongs to field of environmental engineering sewage treatment, and in particular to a kind of drawer using composite slow release carbon source as filler
Formula biofilter.
Background technology
Denitrification bio-filter has that hydraulic load is big, biomass big, small investment and the features such as high treatment effeciency, is current
The key technology of low ratio of carbon to ammonium city sewage deep denitrogenation processing.Traditional biological denitrificaion is by adding the liquid such as methanol, glucose
State carbon source carries out denitrification, easily causes carbon source and adds deficiency or excessive, not only increases denitrification cost, system operation complexity and two
Secondary pollution problem is than more prominent.It is cheap and can hold using New Solid carbon source one of study hotspot as denitrification denitrogenation
Continue the solid carbon source of release carbon source to replace the research of traditional carbon source to turn into new focus.
The solid carbon source of this sustainable release carbon source is during plant running, and releasing carbon amounts can be gradually less,
Eventually result in filler failure；The aobvious acidity of solution after immersion, influences denitrification effect.And traditional biofilter is changed
Filler can spend a large amount of manpower and materials, and trouble inconvenience, increase operating cost.So the new sewage disposal of research and extension
Equipment and corresponding control measure are necessary to solve these technical problems.
The content of the invention
The present invention is carried out to solve the above problems, it is therefore intended that provide one kind using composite slow release carbon source as filler
Drawer type biofilter.
The invention provides a kind of drawer type biofilter using composite slow release carbon source as filler, have the feature that,
Including：Housing, exhaust outlet, water distribution unit, drawer unit, supporting layer and delivery port, wherein, water distribution unit is used for accessing pending water
Distribution is to drawer unit, and drawer unit is used to carry out accessing pending water filtration treatment, including drawer and is contained in answering in drawer
Sustained release carbon filler is closed, supporting layer includes sand grains and supporting plate, below drawer unit, and sand grains is positioned on supporting plate, water outlet
Mouth is located at the bottom of housing, and exhaust outlet is located at the top of housing, connected by flange, for N in course of reaction2Discharge.
In the drawer type biofilter using composite slow release carbon source as filler that the present invention is provided, can also have such
Feature：Wherein, water distribution unit includes：Peristaltic pump, is arranged on hull outside, the flow velocity for controlling accessing pending water；Penstock,
It is connected with peristaltic pump, for allowing accessing pending water to enter；Water intaking valve, is arranged on penstock；Isocon is arranged at case top
Side wall, for being shunted to accessing pending water；Cloth water conduit, is connected with isocon；And water distributing pore, it is evenly distributed on water distribution and leads
The both sides of pipe, a diameter of 1mm.
In the drawer type biofilter using composite slow release carbon source as filler that the present invention is provided, can also have such
Feature：Wherein, drawer unit has multiple, in addition to：Nut, for drawer to be fixed on into housing；Handle, located at the outer of drawer
Side, for pull drawer so as to change composite slow release carbon filler；Rubber ring, located at the inner side of drawer；And hole, located at described
Drawer bottom, there is multiple.
In the drawer type biofilter using composite slow release carbon source as filler that the present invention is provided, can also have such
Feature：Wherein, composite slow release carbon filler is cylindric, graininess or spherical, a diameter of 3-6mm.Composite slow release carbon filler is by agriculture
Industry discarded object, absorption basic mineral are formed as adsorption layer and cohesive material as supporting layer by co-blended parcel, multiple
The porosity for closing sustained release carbon filler is 50%-60%.
In the drawer type biofilter using composite slow release carbon source as filler that the present invention is provided, can also have such
Feature：Wherein, mass percent shared by agricultural wastes is 90%-95%.
In the drawer type biofilter using composite slow release carbon source as filler that the present invention is provided, can also have such
Feature：Wherein, the particle diameter of absorption Alkaline minerals material is 50-100 mesh, is made up of magnesium carbonate, calcium oxide and iron oxide, magnesium
Mass percent shared by element is 0%~2%, and mass percent shared by ferro element is 0%~3%, quality hundred shared by calcium constituent
Fraction is 0%~4%.
In the drawer type biofilter using composite slow release carbon source as filler that the present invention is provided, can also have such
Feature：Wherein, cohesive material is synthetic resin.
In the drawer type biofilter using composite slow release carbon source as filler that the present invention is provided, can also have such
Feature：Wherein, composite slow release carbon filler is inoculated with bacterium source, bacterium source separation and concentration for activated sludge or voluntarily in advance before denitrogenation
Bacterial strain.
The effect of invention and effect
According to the drawer type biofilter involved in the present invention using composite slow release carbon source as filler, because what is used answers
It is as supporting layer bag by the use of agricultural wastes, absorption basic mineral as adsorption layer and cohesive material to close sustained release carbon filler
Wrap up in, substantial amounts of micropore can be formed in degradation process, surface area is added, be adapted to microbial growth, reach
The treatment effect of synchronous nitration and denitrification.Therefore, the present invention has regulation microbial environment, makes full use of space, takes up an area face
Product is small, and operating cost is low, easy to operate, has the advantages that good treatment effect to denitrogenation, and using composite slow release carbon source to fill out
The raw material of the drawer type biofilter of material is cheap and easy to get and can effectively adsorb retention nitrogen and its colourity, reduce the acid of leachate
Property, reduce secondary pollution and build and be conducive to denitrifying habitat conditions, the composite after improvement possesses before engineer applied
Scape.
Brief description of the drawings
Fig. 1 is the overall structure diagram in embodiments of the invention.
Embodiment
In order that the technological means realized of the present invention is easy to understand with effect, with reference to embodiments and accompanying drawing to
Invention is specifically addressed.
Embodiment one：
Fig. 1 is the overall structure diagram in embodiments of the invention.
As shown in figure 1, a kind of drawer type biofilter 100 using composite slow release carbon source as filler of the present embodiment, including：
Exhaust outlet 1, water distribution unit, drawer unit, supporting layer, delivery port 15 and housing 17.
Water distribution unit is used to accessing pending water being distributed to drawer unit.
Water distribution unit includes：Peristaltic pump 16, is arranged on outside housing 17, the flow velocity for controlling accessing pending water；Water inlet is led
Pipe 8, is connected with peristaltic pump 16, for allowing accessing pending water to enter；Water intaking valve 6, is arranged on penstock 8；Isocon 4 is arranged at
The top sidewall of housing 17, for being shunted to accessing pending water；Cloth water conduit 2 has multiple, is connected respectively with isocon 4；And
Water distributing pore 5, is evenly distributed on the both sides of cloth water conduit 2, a diameter of 1mm.
Drawer unit, for carrying out filtration treatment to accessing pending water, including drawer 12 and is contained in compound in drawer 12
It is sustained carbon filler 11.
Drawer unit has multiple, in addition to：Nut 7, for drawer 12 to be fixed on into housing 17；Handle 9, located at drawer
12 outside, for pull drawer 12 so as to change composite slow release carbon filler 11；Rubber ring 10, located at the inner side of drawer 12；With
And hole (not shown), located at the bottom of drawer 12, there is multiple.
Multiple drawer units are stackable to carry out processing waste water, a part can also be selected to carry out operation, other are standby.
Composite slow release carbon filler 11 is cylindric, graininess or spherical, and composite slow release carbon filler 11 is by agricultural wastes, suction
Attached basic mineral is formed as adsorption layer and cohesive material as supporting layer by co-blended parcel, composite slow release carbon filler
11 porosity is 50%-60%.
Mass percent shared by agricultural wastes is 90%-95%.
Cohesive material is synthetic resin.
Composite slow release carbon filler 11 is inoculated with bacterium source, bacterium source separation and concentration for activated sludge or voluntarily in advance before denitrogenation
Bacterial strain.
Supporting layer includes sand grains 13 and supporting plate 14, below drawer unit, and sand grains 13 is positioned on supporting plate 14, uses
Water after to drawer unit filtration treatment carries out ammonia nitrogen absorption, and the particle diameter of sand grains 13 is 3-6mm.
Delivery port 15 is located at the bottom of housing 17, for discharging the water after ammonia nitrogen absorption processing.
Exhaust outlet 1 is located at the top of housing 17, is connected by flange 3, for N in course of reaction2Discharge.
The course of work of drawer type biofilter of the present embodiment using composite slow release carbon source as filler is as follows：
In the drawer type biofilter using composite slow release carbon source as filler of the present embodiment, accessing pending water enters penstock
After 8, water intaking valve 6 is opened, accessing pending water is entered isocon 4, is distributed to accessing pending water by the shunting action of isocon 4
In cloth water conduit 2, by water distributing pore 5, uniformly spray is filtered to drawer 12 is interior by composite slow release carbon filler 11, after filtering
Water enters supporting layer, finally discharges the water after treating by delivery port 15.
Using said apparatus, for the water quality of synthetic municipal wastewater factory secondary effluent, experiment raw water is artificial distribution, physics and chemistry
Characteristic：COD is 35~45mg/l, and pH is 6.6~7.0, DO, NH3-N、NO3 -- N, TN mass concentrations are respectively 4.2~7.9,0.3
~1.6,11~18,12~20mg/l.Artificial distribution is delivered to positioned at shunting by peristaltic pump 16 through inlet channel 8 and water intaking valve 6
Pipe 4, is diverted in each cloth water conduit 2, uniform fluid flow is discharged from osculum 3 through isocon 4, and in composite slow release carbon filler 11
Microorganism contact, reaction generation gas discharged by top gas outlet 1.Current after the circular treatment of drawer 12,
Flow into after the sand grains 13 on supporting plate 14, discharged by delivery port 15.Water velocity is set to 0.03L/min.Packing volume is
0.4L, filler porosity is 0.6, and hydraulic detention time is 8min, with two drawer units, and both hydraulic detention time was
16min.Wherein hydraulic detention time=filler porosity * packing volumes/flow velocity, hydraulic detention time can be regulated and controled by flow velocity.
Composite slow release carbon filler 11 is main by agricultural wastes, and basic mineral is by stickum blending and parcel
Into.Agricultural wastes mass percent is more than 90%, in addition, in basic mineral, mass percent shared by magnesium elements is 0%
~2%, mass percent shared by ferro element is 0%~3%, and mass percent shared by calcium constituent is 0%~4%.It is multiple after blending
It is column (long 2cm, diameter 5mm) to close sustained release carbon filler 11.
Composite slow release carbon filler 11 is inoculated with the activated sludge with denitrification activity by domestication in advance before treatment
(inoculative proportion is 1:1).Composite slow release carbon filler 11 is in seeded process, and nutrient solution total nitrogen and nitrate nitrogen concentration are respectively 80mg/l
And 75mg/l, pH=7.5.It is 14 days to be inoculated with acclimation period.
Embodiment two：
In the present embodiment two, for identical structure in embodiment one, give identical symbol, and omit identical
Explanation.
Using the identical device of embodiment one, experiment raw water is artificial distribution, the water of synthetic municipal wastewater factory secondary effluent
Matter, effluent quality is that COD is 45~55mg/l, and pH is 6.6~7.4, DO, NH3-N、NO3 -- N, TN mass concentrations are respectively 5.0
~7.8,0.8~1.4,12.5~14.5,13.7~17.1mg/l.Flow set is 0.02L/min, using two drawer lists
Member, hydraulic detention time is 24min, and other conditions are identical with embodiment one.Experiment uses intermittent water inflow mode.
Embodiment three：
In the present embodiment three, for identical structure in embodiment one, give identical symbol, and omit identical
Explanation.
Using the identical device of embodiment one, raw water is taken to certain municipal wastewater treatment plant secondary effluent, and effluent quality is that COD is 50
~60mg/l, pH are 6.5~7.5, DO, NH3-N、NO3 -- N, TN mass concentrations be respectively 5.2~7.5,0.5~1.5,12.8~
15.8th, 13.7~17.7mg/l.Flow set is 0.02L/min, using three drawer units, and hydraulic detention time is 36min,
Other conditions are identical with embodiment one.Experiment uses intermittent water inflow mode.
Analysis of experimental results：
In embodiment one, experiment influent COD, total nitrogen, nitrate nitrogen, ammonia nitrogen mass concentration average difference 40mg/l, 16mg/
L, 14.5mg/l, 1mg/l.After testing, the water outlet COD of experiment a few days ago is much larger than raw water, is 115 and 108mg/l, this is probably
Because the dissolved organic matter release in agricultural wastes is excessive, microorganism has little time processing, causes water outlet COD bigger than normal.With
In three or four days afterwards, there is downward trend in COD, less than raw water position 35mg/l.After plant running one month, COD drops to
20mg/l, clearance reaches 50%.Total nitrogen drops to 9.2mg/l from original 16mg/l, and clearance reaches 42.5%.Nitre state
Nitrogen drops to 8.1mg/l from original 14.5mg/l, and clearance reaches 44%.Ammonia nitrogen drops to 0.4mg/ from original 1mg/l
L, clearance reaches 60%, and COD, total nitrogen, nitrate nitrogen, the ammonia nitrogen of water outlet afterwards are held essentially constant, and clearance is decreased obviously.This
It is probably the depleted failure of carbon source in filler, the filler in drawer is re-replaced, can continues to test.In embodiment two
In, experiment raw water uses the secondary effluent water quality of synthetic municipal wastewater, COD, total nitrogen, nitrate nitrogen, ammonia nitrogen mass concentration average point
Other 50mg/l, 15.4mg/l, 13.5mg/l, 1.1mg/l.After plant running one month, COD drops to 20mg/l, clearance
Reach 60%.Total nitrogen drops to 7.2mg/l from original 15.4mg/l, and clearance reaches 53.2%.Nitrate nitrogen is from original
13.5mg/l drops to 6.0mg/l, and clearance reaches 55.6%.Ammonia nitrogen drops to 0.4mg/l from original 1.1mg/l, removes
Rate reaches 63.6%, and COD, total nitrogen, the nitrate nitrogen of water outlet afterwards are also held essentially constant, and clearance is decreased obviously.Equally take
Change the sustainable experiment of method of filler.In embodiment three, experiment raw water use municipal sewage secondary effluent water quality, COD,
Total nitrogen, nitrate nitrogen, ammonia nitrogen mass concentration average difference 55mg/l, 15.7mg/l, 14.3mg/l, 1.0mg/l.Plant running one
After month, COD drops to 18mg/l, and clearance reaches 67.2%.Total nitrogen drops to 5.3mg/l from original 15.7mg/l, goes
Except rate reaches 66.2%.Nitrate nitrogen drops to 4.4mg/l from original 14.3mg/l, and clearance reaches 69.2%.Ammonia nitrogen is from original
The 1.0mg/l come drops to 0.3mg/l, and clearance reaches 70%, and COD, total nitrogen, the nitrate nitrogen of water outlet afterwards are also kept not substantially
Become, clearance is decreased obviously.Equally take the sustainable experiment of method for changing filler.Therefore, the invention can effectively remove total nitrogen,
Nitrate nitrogen, ammonia nitrogen and conveniently replaced filler, keep experiment to be normally carried out.
The effect of embodiment and effect
The present embodiment using composite slow release carbon by filler drawer type biofilter because use composite slow release carbon filler
Formed by the use of agricultural wastes, absorption basic mineral as adsorption layer and cohesive material as supporting layer parcel, energy
Substantial amounts of micropore can be formed in degradation process, surface area is added, is adapted to microbial growth, has reached simultaneous nitrification and denitrification
The treatment effect of nitrification.Therefore, the present invention has regulation microbial environment, makes full use of space, floor space is small, operating cost
It is low, it is easy to operate, there is good treatment effect, and the drawer type biofilter by filler of slow release carbon source to denitrogenation
Raw material it is cheap and easy to get and can effectively adsorb retention nitrogen and its colourity, reduce leachate acidity, reduction secondary pollution simultaneously
Build and be conducive to denitrifying habitat conditions, the composite after improvement possesses future in engineering applications.
The present embodiment using be sustained carbon as the drawer type biofilter of filler sustained release carbon filler can by adjust sustained release carbon
Proportioning to control, be allowed to energy needed for can effectively meeting heterotrophism bacteria growing and be avoided that again lead because organic carbon rate of release is too fast
The secondary pollution problem of cause.
The present embodiment to be sustained carbon as degradable component in the composite slow release carbon filler of the drawer type biofilter of filler
Be exhausted failure when, filler can be taken out by drawer, then supplement new composite slow release carbon filler, it is simple to operate.
The present embodiment using be sustained carbon as the drawer type biofilter of filler composite slow release carbon filler parcel process
In, various trace elements can be added in specific proportions, to meet in denitrification process in biofilter on composite slow release carbon filler
The growth of microorganism needs.
The sand grains of the drawer type biofilter using composite slow release carbon as filler of the present embodiment can adsorb ammonia nitrogen and prevent
Delivery port is blocked to play a role in filtering.
The rubber ring of the drawer type biofilter using composite slow release carbon as filler of the present embodiment can play buffering and close
The effect of envelope.
Above-mentioned embodiment is the preferred case of the present invention, is not intended to limit protection scope of the present invention.
Claims (6)
1. a kind of drawer type biofilter using composite slow release carbon source as filler, it is characterised in that including：
Housing, exhaust outlet, water distribution unit, drawer unit, supporting layer and delivery port,
Wherein, the water distribution unit is used to accessing pending water being distributed to the drawer unit,
The drawer unit is used to carry out the accessing pending water filtration treatment, including drawer and the sustained release being contained in the drawer
Carbon filler,
The supporting layer includes sand grains and supporting plate, and below the drawer unit, the sand grains is positioned over the supporting plate
On,
The exhaust outlet is located at the top of the housing, is connected by flange, for N in course of reaction2Discharge.
2. the drawer type biofilter according to claim 1 using composite slow release carbon source as filler, it is characterised in that：
Wherein, the water distribution unit includes：
Peristaltic pump, is arranged on the hull outside, the flow velocity for controlling the accessing pending water；
Penstock, is connected with the peristaltic pump, for allowing the accessing pending water to enter；Water intaking valve, is arranged on the water inlet and leads
Guan Shang；
Isocon is arranged at case top side wall, for being shunted to the accessing pending water；
Cloth water conduit, is connected with the isocon；And
Water distributing pore, is evenly distributed on the both sides of the cloth water conduit, a diameter of 1mm.
3. the drawer type biofilter according to claim 1 using composite slow release carbon source as filler, it is characterised in that：
Wherein, the drawer unit has multiple, in addition to：
Nut, for the drawer to be fixed on the housing；
Handle, located at the outside of the drawer, for drawer described in pull so as to change the sustained release carbon filler；
Rubber ring, located at the inner side of the drawer；And
Hole, located at the drawer bottom, there is multiple.
4. the drawer type biofilter according to claim 1 using slow release carbon source as filler, it is characterised in that：
The composite slow release carbon filler is used as branch by agricultural wastes, absorption basic mineral as adsorption layer and cohesive material
Support layer is formed by co-blended parcel, generally cylindric, graininess or spherical, and a diameter of 3-6mm, porosity is 50%-
60%.
5. the drawer type biofilter according to claim 5 using slow release carbon source as filler, it is characterised in that：
Wherein, mass percent shared by the agricultural wastes is 90%-95%.
6. the drawer type biofilter according to claim 5 using slow release carbon source as filler, it is characterised in that：
Wherein, the particle diameter of the absorption Alkaline minerals material is 50-100 mesh, by magnesium carbonate, calcium oxide and iron oxide group
Into mass percent shared by magnesium elements is 0%~2%, and mass percent shared by ferro element is 0%~3%, matter shared by calcium constituent
It is 0%~4% to measure percentage.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710583909.8A CN107265642A (en) | 2017-07-18 | 2017-07-18 | A kind of drawer type biofilter using composite slow release carbon source as filler |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710583909.8A CN107265642A (en) | 2017-07-18 | 2017-07-18 | A kind of drawer type biofilter using composite slow release carbon source as filler |
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Application publication date: 20171020 |