A kind of interior cycling denitrification biofilter coupling micro-filtration membrane water treatment device
Technical field
The utility model relates to a kind of interior cycling denitrification biofilters to couple micro-filtration membrane water treatment device, belong to water process skill
Art field.
Background technique
Water is Source of life, and with the development of economy, social progress, water pollution and shortage of water resources have become and restrict me
The big bottleneck that state further develops, has caused the extensive concern of people.To successfully manage increasingly serious water crisis, it is necessary to
Novel water treatment technology, technique and device are developed, to solve the problems, such as increasingly complicated water pollution and water shortage.At numerous sewage
In reason method, the sewage disposal technology based on physics, chemistry and biology is most widely used.It is raw compared to physics, chemical technology
Object method pollutants such as nitrogen, phosphorus, organic carbon in removal sewage have significant advantage, therefore, using aerobic and anaerobism as core
Biologic treating technique has been rapidly developed and applied in sewage treatment field.Biofilter is a kind of simple, efficient raw
Object embrane method sewage treatment process is aerated on the basis of traditional biological filter tank by increasing, and the biological oxidation reinforced in filter tank is made
With the treatment effect of further enhanced sewage.Biological aerated filter combines absorption retention and oxidation degradation double action,
The pollutants such as organic matter, the ammonia nitrogen in water can be effectively removed.But traditional aeration biofilter washes away seriously filtrate, and it is thin that there are sulphur
The problems such as loss of the microorganism of the generation cycles such as bacterium, nitrifier length is serious, causes denitrification effect to be greatly reduced.
Summary of the invention
Technical problem to be solved in the utility model is in view of the defects existing in the prior art, it is raw to provide interior cycling denitrification
Object filter tank couples micro-filtration membrane water treatment device.
In order to solve this technical problem, the utility model provides a kind of interior cycling denitrification biofilter coupling micro-filtration film water
Processing unit, including interior cycling denitrification biofilter area and micro-filtrate membrane filtration area;The interior cycling denitrification biofilter area includes
Biofilter water inlet, biofilter, biofilter material area, perforated support isolation board, aeration reaction zone, aerator, aeration tube,
Air pump and biofilter water outlet;Biofilter water inlet is connected with biofilter bottom, and the setting of perforated support isolation board exists
Biofilter lower part, biofilter material area are located above perforated support isolation board, and the middle part of the biofilter is equipped with aeration reaction
Area, aeration reaction zone bottom are equipped with aerator, and aerator is connected by aeration tube with air pump, and biofilter water outlet is set
It sets and is connected on biofilter top, with micro-filtrate membrane filtration area;The micro-filtrate membrane filtration area include micro-filtration membrane cisterna, micro-filtration membrane module,
Pressure sensor and suction pump;Micro-filtration membrane cisterna top is connected with biofilter water outlet, and microfiltration membranes group is equipped in the middle part of micro-filtration membrane cisterna
The bottom of part, the micro-filtration membrane module is connected by pipeline with suction pump, and the pipeline is equipped with pressure sensor.
The biofilter material area use filtrate for modified particles active carbon, modified zeolite, biological ceramic particle, quartz sand, manganese sand,
Combination between fiber filter bulb or each filtrate.
The micro-filtration membrane module material be organic film or inorganic ceramic membrane, average membrane pore size size be 0.1 μm, 0.2 μm or
0.4 μm, using hollow fiber form or flat.
The organic film is PVDF organic film or PES organic film;The inorganic ceramic membrane is aluminium oxide, zirconium oxide, oxidation
Combination between titanium or different materials.
The interior cycling denitrification biofilter and micro-filtrate membrane filtration area are coupled in a structures.
The utility model has the advantages that the utility model is by interior cycling denitrification biofilter and micro-filtrate membrane filtration area organic assembling, interior circulation
Preliminary processes of the denitrogenation biological filter as microfiltration membranes can be effectively removed pollutant, alleviate micro-filtration fouling membrane, reduce microfiltration membranes
Backwash and chemical cleaning period improve effluent quality;Micro-filtrate membrane filtration area can retain microorganism, avoid causing in aeration process
Microorganism be lost, strengthened denitrification effect, while alleviating the biological pollution of water body;It solves and filtrate is washed away sternly in the prior art
The problems such as heavy, serious there are the loss of the microorganism of the generation cycles such as sulfur bacteria, nitrifier length, denitrification effect greatly improves.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
In figure: cycling denitrification biofilter area, II micro-filtrate membrane filtration area in I;1 biofilter water inlet, 2 biofilters, 3
Biofilter material area, 4 perforated support isolation boards, 5 aeration reaction zones, 6 aerators, 7 aeration tubes, 8 air pumps, 9 biofilters go out
The mouth of a river, 10 micro-filtration membrane cisternas, 11 micro-filtration membrane modules, 12 pressure sensors, 13 suction pumps.
Specific embodiment
The utility model is specifically described with reference to the accompanying drawings and embodiments.
Fig. 1 show the structural schematic diagram of the utility model.
The utility model provides a kind of interior cycling denitrification biofilter coupling micro-filtration membrane water treatment device, including interior circulation
Denitrogenation biological filter area I and micro-filtrate membrane filtration area II,
The interior cycling denitrification biofilter area I includes biofilter water inlet 1, biofilter 2, biofilter material area 3, wears
Hole supports isolation board 4, aeration reaction zone 5, aerator 6, aeration tube 7, air pump 8 and biofilter water outlet 9.
The biofilter water inlet 1 is connected with 2 bottom of biofilter, and perforated support isolation board 4 is arranged in biofilter 2
Lower part, biofilter material area 3 are located at 4 top of perforated support isolation board, and the middle part of the biofilter 2 is equipped with aeration reaction zone 5, exposes
5 bottom of solid/liquid/gas reactions area is equipped with aerator 6, and aerator 6 is connected by aeration tube 7 with air pump 8, biofilter water outlet 9
Setting is connected on 2 top of biofilter, with micro-filtrate membrane filtration area II;Aeration reaction zone and biofilter material are separated from reducing
It is aerated the perturbation action to microorganism on filtrate, ensure that the integrality of biomembrane.
The biofilter material area 3 uses filtrate for modified particles active carbon, modified zeolite, biological ceramic particle, quartz sand, manganese
Combination between sand, fiber filter bulb or each filtrate.
The micro-filtrate membrane filtration area II includes micro-filtration membrane cisterna 10, micro-filtration membrane module 11, pressure sensor 12 and suction pump 13;
10 top of micro-filtration membrane cisterna is connected with biofilter water outlet 9, and micro-filtration membrane module 11, the microfiltration membranes are equipped in the middle part of micro-filtration membrane cisterna 10
The bottom of component 11 is connected by pipeline with suction pump 13, and the pipeline is equipped with pressure sensor 12.
11 material of micro-filtration membrane module is organic film or inorganic ceramic membrane, and average membrane pore size size is 0.1 μm, 0.2 μm
Or 0.4 μm, using hollow fiber form or flat.
The organic film is PVDF organic film or PES organic film;The inorganic ceramic membrane is aluminium oxide, zirconium oxide, oxidation
Combination between titanium or different materials.
Cycling denitrification biofilter I and micro-filtrate membrane filtration area II are coupled in a structures in the utility model.
The utility model can be transformed upgrading, simple structure, operation side on the basis of existing traditional biological filter tank
Just, it is easy to construct and manage.
Working principle of the utility model is:
When carrying out sewage treatment, sewage enters biological filter unit 2 by biofilter water inlet 1 first, sewage from lower and
On flow through biofilter material area 3, when water flow rises to 5 upper end of aeration reaction zone, but be back to from top to bottom aeration zone bottom exposure
Device of air 6 is aerated, and interior circulation is formed;Water outlet enters micro-filtration membrane cisterna 10 through biofilter water outlet 9, in the pumping of suction pump 13
Under suction effect, filtered through micro-filtration membrane module 11.Transmembrane pressure is carried out using the pressure sensor 12 on film filtration effluent pipeline
Monitoring, to determine microfiltration membranes backwashing period.
For the utility model by interior cycling denitrification biofilter I and micro-filtrate membrane filtration area II organic assembling, interior cycling denitrification is raw
Preliminary processes of the object filter tank I as microfiltration membranes can be effectively removed pollutant, alleviate micro-filtration fouling membrane, reduce microfiltration membranes recoil
It washes and chemical cleaning period, improvement effluent quality;Micro-filtrate membrane filtration area II can retain microorganism, caused by avoiding in aeration process
Microorganism is lost, strengthened denitrification effect, while alleviating the biological pollution of water body;It solves and filtrate is washed away sternly in the prior art
The problems such as heavy, serious there are the loss of the microorganism of the generation cycles such as sulfur bacteria, nitrifier length, denitrification effect greatly improves.
The utility model the embodiment above, is merely illustrative, be not it is only, it is all in the scope of the utility model
Or the change in equivalent the scope of the utility model is surrounded by the utility model.