CN206940544U - A30+MBR processing units - Google Patents

Abstract

Septic tank+A30 processing units, belong to sewage disposal field of Environment Protection, including：Water inlet, sedimentation basin, septic tank, depositing reservoir, connecting tube, pre- denitrification pond, anaerobic pond, anoxic pond, Aerobic Pond, membrane cisterna, MBR membrane modules, Ball-type packing, MBBR fillers, outlet pipe, aeration head, aeration branch pipe, aeration supervisor, gas control valve, aerator, mud return line, nitrification liquid return duct, bacteria bed, self priming pump；Aerator is mounted in Aerobic Pond, membrane cisterna；Made a return journey biodegradable organic pollution in water removal by activated sludge, the water after purification and activated sludge are carried out by separation of solid and liquid using film；It can be widely used in sewage disposal field of Environment Protection.

Description

A30+MBR processing units

Technical field

The invention belongs to field of Environment Protection, more particularly to sewage disposal, water resource filtering biological processing recycling field.

Background technology

Field of Environment Protection, especially sewage disposal are the important steps of current town and country water supply and sewage work, existing municipal sewage treatment The renewal upgrading of factory, particularly effluent quality are difficult to up to standard or processing flow and increased severely and water factory that floor space can not expand；Nothing The cell of sewerage pipeline network, such as residential area, travel resort, scenic spot；There are the area or place of reusing sewage demand, such as Hotel, car wash trade, passenger plane, Portaloo etc. are required to sewage disposal device.Existing sewage disposal device technique has：A3O is One kind improvement denitrification dephosphorization technique（I.e. pre- denitrification-anaerobic- anoxic- oxic activated sludge process）, it is detesting in traditional A2O techniques The pre- denitrification zone of returned sludge is additionally arranged before oxygen pond, reaches the purpose for improving biological phosphor-removing effect.Pre- denitrification pond, it is raw Change sludge reflux and arrive pre- denitrification pond, while raw sewage enters pre- denitrification pond, organic matter of the microorganism by the use of in intaking as Carbon source, the nitrate in returned sludge is removed, eliminate adverse effect of the nitrate to anaerobism dephosphorization.Anaerobic pond, utilize anaerobic bacteria The degraded of organic matter and the release of phosphorus are carried out under anaerobic；Anoxic pond, nitrification liquid are back to anoxic pond, and oxygen bacterium is in anoxic Under the conditions of degradation of organic substances carry out the denitrification of nitrate simultaneously, so as to remove total nitrogen.Aerobic Pond, aerobic bacteria is under aerobic condition Thorough degradation of organic substances, ammonia nitrogen, absorb phosphorus.The technique is substantially removes polluter using the effect of microorganism, therefore, raw Second pond is connect after change, carries out mud-water separation, second pond is the effect using gravity, allows microorganism to be carried out in second pond certainly So sedimentation.One side second pond is continuum micromeehanics continuous effluent, due to the flowing of water, can bring certain agitation, so not Only influence whether the natural subsidence of sludge, and the sludge that has settled of second pond bottom as the agitation of current and it is general Rise, cause aqueous suspension increase；On the other hand, the sludge of second pond bottom is deposited in, under anoxic conditions, anti-nitre can be carried out Change is acted on, and bubble is produced in water, and drives base sludge to float, and so be may result in system and is gone out aqueous suspension increase, water Matter is not up to standard.Need to invent efficient separation of solid and liquid, effluent quality high-quality stable sewage disposal device and technique.

The content of the invention

In place of overcome the deficiencies in the prior art, to invent a kind of A3O+MBR processing units.

A3O+MBR processing units include：It is water inlet, pre- denitrification pond, anaerobic pond, anoxic pond, Aerobic Pond, membrane cisterna, spherical Filler, MBBR fillers, outlet pipe, inspection socket, aerator, mud return line, nitrification liquid return duct, self priming pump, MBR film groups Part, aerator refer to aeration head, aeration branch pipe, aeration supervisor, gas control valve, aerator；In pre- denitrification pond, anaerobism Bacteria bed is installed in pond, anoxic pond, Ball-type packing is placed with bacteria bed, Ball-type packing is fixed；It is aerobic MBBR fillers are placed with pond, MBBR fillers are mobile；MBR membrane modules are installed in membrane cisterna；In pre- denitrification pond, anaerobism Pond, anoxic pond, Aerobic Pond, access hole is mounted at the top of membrane cisterna.Self priming pump is installed in outlet pipe；In Aerobic Pond and anoxic pond Nitrification liquid return duct is installed between top；Mud return line is installed between membrane cisterna and pre- denitrification bottom of pond portion；Aerobic Pond, Aerator is mounted in membrane cisterna.

Aeration supervisor and aerator are installed at the top of the ectosome of A30+MBR processing units, in the centre of aeration branch pipe And it is mounted on gas control valve between aeration branch pipe and aeration supervisor；Bacteria bed is grid box, the top of casing away from Water pipe low side 82-152mm is separated out, the bottom of casing is apart from pond inner bottom part 382-452mm；The top of casing is apart from outlet pipe low side Preferably 122mm, the bottom of casing are preferably 422mm apart from pond inner bottom part.

In sewage disposal process, the Ball-type packing in bacteria bed is to be fixedly mounted, and aeration is arranged at bottom in Aerobic Pond Device, the MBBR fillers in bacteria bed are moveable.

The annexation of A30+MBR processing units is：Water inlet is installed in the left upper part of A30+MBR processing units, Sewage enters pre- denitrification pond by water inlet；Pre- denitrification pond handles water with being connected at the top of anaerobic pond in pre- denitrification pond Anaerobic pond is flowed into from top；Anaerobic pond is connected with the bottom of anoxic pond, and water is handled in anaerobic pond and is flowed into anoxic pond from bottom；Lack Oxygen pond handles water with being connected at the top of Aerobic Pond, in anoxic pond and flows into Aerobic Pond from from top；Aerobic Pond is good with being connected at the top of membrane cisterna Water is handled in oxygen pond and flows into membrane cisterna from from top；MBR membrane modules are installed in the middle part of membrane cisterna, have aerator in pond, can be carried out Sufficiently stirring, and recoil, A30+MBR processing unit right-hand members top are provided with outlet pipe, and the processing water of membrane cisterna passes through MBR film groups Part filters, and MBR membrane modules top connects with outlet pipe, and the filtered water of MBR membrane modules passes through self-priming pumped.

The sewage disposal principle of A30+MBR processing units is：For insufficient existing for traditional A30 techniques, according to engineering Experience, A3O+MBR techniques are proposed, organic pollution biodegradable in removing water of being made a return journey first by activated sludge, then adopted The water after purification and activated sludge are subjected to separation of solid and liquid with film.Traditional second pond is replaced using BR membrane modules；Membrane cisterna can To isolate the volume of a part from Aerobic Pond, it is not necessary to additionally build pond body, therefore land used can be saved；Membrane aperture is small, mistake Filter effect has more advantage compared in general sedimentation basin, and water outlet is limpid, no suspended substance, is not in Mud up-floating phenomenon；Work as water inlet When having large change in the water short time, it may be considered that short time increasing film alleviates the purpose impacted by flow to reach； When influent quality changes, due to there is higher sludge concentration, the purpose for alleviating impact can also be reached within the specific limits；Cause This, compared to traditional handicraft, the technique impact resistance after improvement is stronger；Traditional active sludge treatment process, born in high sludge Lotus situation operation sludge bulking phenomenon occurs, cause system to be not normally functioning, water outlet it is not up to standard.And A30+MBR techniques It is to carry out mud-water separation with the suction by film, therefore, influence of the sludge bulking for A30+MBR water outlets is much smaller than traditional work Skill, therefore operational management is very convenient.A3O+MBR techniques, traditional second pond is replaced using MBR membrane modules.This is to utilize The filtration of MBR membrane modules retains the activated sludge in biochemical reaction tank and larger molecular organicses.Film retains efficiency high, Therefore floor space can be reduced, the function of bioreactor is enhanced by the isolation technics of film significantly, makes activated sludge concentration Greatly improve, its hydraulic detention time（HRT）And sludge retention time（SRT）It can control respectively.Returned sludge enters anaerobism Chi Shi, enter anaerobic pond due to carrying nitrate nitrogen, will preferentially capture organic matter degradable in sewage, polyP bacteria is lost competition Advantage, it have impact on the effect of biological phosphate-eliminating.Pre- denitrification pond is to increase a denitrification pond in traditional A2O techniques front end, is changed The principle entered is exactly that the returned sludge from second pond is carried out instead first using the organic matter in the sewage for entering pre- denitrification pond Nitrification removes nitrate nitrogen, so as to eliminate adverse effect of the nitrate to anaerobism dephosphorization, improves the phosphor-removing effect of system.

Nominal definition：On：It is upward with earth horizontal plane；

Under：It is upward with earth horizontal plane；

It is left：A left side is defined as in face of the positive left side of equipment；

It is right：The right side is defined as in face of the positive the right of equipment；

MBR:(Membrane Bio-Reactor) membrane bioreactor；

MBBR:(Moving Bed Biofilm Reactor) MBBR；

A30:Pre- denitrification-anaerobic- anoxic- oxic method.

The technological progress of this A30+MBR processing units is：The technology path of use is that pre- denitrification pond is traditional A2O techniques front end increases a denitrification pond, and bacteria bed, biological filter are provided with pre- denitrification pond, anaerobic pond, anoxic pond Ball-type packing is placed with bed, Ball-type packing is fixed；MBBR fillers are placed with Aerobic Pond, MBBR fillers are mobile 's；MBR membrane modules are installed in membrane cisterna；Improved principle is exactly that the returned sludge from second pond is utilized into pre- denitrification Organic matter in the sewage in pond carries out denitrification and removes nitrate nitrogen first, so as to eliminate nitrate to the unfavorable of anaerobism dephosphorization Influence, improve the phosphor-removing effect of system；Made a return journey biodegradable organic pollution in water removal by activated sludge, then used Water after purification and activated sludge are carried out separation of solid and liquid by film, and traditional second pond is replaced using BR membrane modules；The skill of acquisition Art effect is stronger, the traditional active sludge treatment process of the technique impact resistance after improving, in the situation of high sludge loading Operation sludge bulking phenomenon occurs, cause system to be not normally functioning, water outlet it is not up to standard；It is with passing through BR to realize technical purpose The suction of membrane module carries out mud-water separation, and influence of the sludge bulking for MBR water outlets is much smaller than traditional handicraft, operational management is non- It is often convenient；Filter effect has more advantage compared in general sedimentation basin, and water outlet is limpid, no suspended substance, is not in that Mud up-floating shows As.

Brief description of the drawings

Fig. 1：A30+MBR processing unit sewage treatment process figures；

Fig. 2：A30+MBR processing device structure diagrams；

In figure：The pre- denitrification pond of 1- water inlets, 2-, 3- anaerobic ponds, 4- anoxic ponds, 5- Aerobic Ponds, 6- membrane cisternas, 7- is spherical fills out Material, 8-MBBR fillers, 9- outlet pipes, 10- inspection sockets, 11- aeration heads, 12- aeration branch pipes, 13- aeration supervisor, 14- gases Regulating valve, 15- aerators, 16- mud return lines, 17- nitrification liquids return duct, 18- self priming pumps, 19-MBR membrane modules.

Embodiment

Embodiment one

Implement this patent A3O+MBR processing units in sewage disposal building site.

A3O+MBR processing units include：Water inlet 1, pre- denitrification pond 2, anaerobic pond 3, anoxic pond 4, Aerobic Pond 5, membrane cisterna 6th, Ball-type packing 7, MBBR fillers 8, outlet pipe 9, inspection socket 10, aerator, mud return line 16, nitrification liquid return duct 17, Self priming pump 18, MBR membrane modules 19, aerator refer to aeration head 11, aeration branch pipe 12, aeration supervisor 13, gas control valve 14, Aerator 15；Bacteria bed is installed in pre- denitrification pond 2, anaerobic pond 3, anoxic pond 4, is placed with bacteria bed spherical Filler 7, Ball-type packing 7 are fixed；MBBR fillers 8 are placed with Aerobic Pond 5, MBBR fillers 8 are mobile；In membrane cisterna MBR membrane modules 19 are installed in 6；In pre- denitrification pond 2, anaerobic pond 3, anoxic pond 4, Aerobic Pond 5, the top of membrane cisterna 6 is respectively mounted There is access hole 10.Self priming pump 18 is installed in outlet pipe 9；Nitrification liquid return duct is installed between Aerobic Pond 5 and the top of anoxic pond 4 17；Mud return line 16 is installed between membrane cisterna 6 and the pre- bottom of denitrification pond 2；It is mounted on being aerated in Aerobic Pond 5, membrane cisterna 6 Device.

Aeration supervisor 13 and aerator 14 are installed at the top of the ectosome of A30+MBR processing units, in aeration branch pipe 12 Centre and aeration branch pipe 12 and aeration supervisor 13 between be mounted on gas control valve 14；Bacteria bed is grid box, The top of casing is 122mm apart from the low side of outlet pipe 9, and the bottom of casing is 422mm apart from pond inner bottom part.

In sewage disposal process, the Ball-type packing 7 in bacteria bed is to be fixedly mounted, and exposure is arranged at bottom in Aerobic Pond 5 Device of air, the MBBR fillers 8 in bacteria bed are moveable.

The annexation of A30+MBR processing units is：Water inlet 1 is installed in the left upper part of A30+MBR processing units, Sewage enters pre- denitrification pond 2 by water inlet；Pre- denitrification pond 2 connects with the top of anaerobic pond 3, locates in pre- denitrification pond 2 Manage water and flow into anaerobic pond 3 from top；Anaerobic pond 3 is connected with the bottom of anoxic pond 4, and water is handled in anaerobic pond 3 and is flowed into from bottom Anoxic pond 4；Anoxic pond 4 is connected with the top of Aerobic Pond 5, and water is handled in anoxic pond 4 and flows into Aerobic Pond 5 from from top；Aerobic Pond 5 with The top of membrane cisterna 6 is connected, and water is handled in Aerobic Pond 5 and flows into membrane cisterna 6 from from top；The middle part of membrane cisterna 6 is provided with MBR membrane modules 7, pond Inside there is aerator, can sufficiently be stirred, and recoil, A30+MBR processing unit right-hand members top is provided with outlet pipe 9, film The processing water in pond 6 is filtered by MBR membrane modules 19, and the top of MBR membrane modules 19 connects with outlet pipe 9, and MBR membrane modules 19 have filtered Water extracted out by self priming pump 18.

With 2t（）/d（My god）Treating capacity exemplified by, inflow is 83L during continuous operation in theory（Rise）/h（Hour）, it is real Border can also be according to actual amount of water intermittent water inflow when running.

The water inlet 1 of the water outlet slave unit of septic tank enters pre- denitrification pond 2, the residence time in pre- denitrification pond pond 2 It is 1 hour, 83 liters of dischargeable capacity, afterwards into anaerobic pond 3,2 hours 3 residence times of anaerobic pond, 166 liters of dischargeable capacity, anaerobism Pond water outlet enters anoxic pond 4,3 hours 4 residence times of anoxic pond, 249 liters of dischargeable capacity, afterwards into Aerobic Pond 5, Aerobic Pond 5 Interior 5 hours residence times, 415 liters of dischargeable capacity, 5 hours residence times in membrane cisterna 6,415 liters of dischargeable capacity.The water of membrane cisterna 6 is used Self priming pump 18 extracts outer row out at the outlet pipe 9 above MBR membrane modules 19.

Pre- denitrification pond 2 is equipped with Ball-type packing 7, first without aeration, the sewage of entrance and the sludge to be flowed back from membrane cisterna 6 Pre- denitrification pond 2 is introduced into, microorganism removes the nitrate for flowing back using degradable carbon source progress denitrification, so as to disappear Except influence of the nitrate to polyP bacteria, ensure the effect of follow-up anaerobic phosphate release.

Anaerobic pond 3 is with also using Ball-type packing 7 in anoxic pond 4, without aeration, control dissolved oxygen is less than 0.5mg（Milligram）/ L（Rise）, Aerobic Pond 5 is interior to use MBBR fillers 8, it is necessary to be aerated, and control dissolved oxygen is in 2 mg（Milligram）/L（Rise）Left and right, membrane cisterna 6 It is interior without filler, it is necessary to enough aerations, ensure that sludge is in suspended state, while MBR membrane modules 19 are recoiled, prevent Block, every film of theoretical amount needs aeration quantity 12L（Rise）/Min（Minute）, and 2 t（）/d（My god）The MBR film groups for the treatment of capacity Part 19 needs 5 films, therefore the aeration quantity of MBR membrane modules 19 about 60L（Rise）/Min（Minute）.Herein according to every membrane filtration 1 square of area, in the case where ensureing total filtration flux, the film of different filter areas also can be selected in practice, now film Aeration quantity need to be adjusted from new.The nitrification liquid of Aerobic Pond 5 is back in anoxic pond 4, and anti-nitre is carried out to nitrate using denitrifying bacterium Change, discharge nitrogen, remove total nitrogen.It is as shown in the table by the system before processing and the water quality after processing：

Index parameter COD BOD5 SS NH3 TN TP

Water inlet mg/L《350 《200 《150 《25 《35 《4

Water outlet mg/L《50 《10 《10 《5 《15 《0.5

Embodiment two

The top filter of bacteria bed is apart from outlet pipe low side 82mm, and the bottom filter of bacteria bed is apart from bottom 382mm。

Remaining is same as above, and repeats no more.

Embodiment three

The top filter of bacteria bed is apart from outlet pipe low side 152mm, and the bottom filter of bacteria bed is apart from bottom 452mm。

Remaining is same as above, and repeats no more.

Claims (6)

1.A3O+MBR processing unit, it is characterised in that：Described A3O+MBR processing units include：Water inlet, pre- denitrification Pond, anaerobic pond, anoxic pond, Aerobic Pond, membrane cisterna, Ball-type packing, MBBR fillers, outlet pipe, inspection socket, aerator, sludge return Flow tube, nitrification liquid return duct, self priming pump, MBR membrane modules, aerator refer to aeration head, aeration branch pipe, aeration supervisor, gas Regulating valve, aerator；Bacteria bed is installed in pre- denitrification pond, anaerobic pond, anoxic pond, ball is placed with bacteria bed Shape filler, Ball-type packing are fixed；MBBR fillers are placed with Aerobic Pond, MBBR fillers are mobile；In membrane cisterna MBR membrane modules are installed；In pre- denitrification pond, anaerobic pond, anoxic pond, Aerobic Pond, access hole is mounted at the top of membrane cisterna； Outlet pipe installs self priming pump；Nitrification liquid return duct is installed between Aerobic Pond and anoxic pond top；In membrane cisterna and pre- denitrification Bottom of pond installs mud return line between portion；Aerator is mounted in Aerobic Pond, membrane cisterna；In A30+MBR processing units Aeration supervisor and aerator are installed, between the centre of aeration branch pipe and aeration branch pipe and aeration supervisor at the top of ectosome Gas control valve is installed.

2. A3O+MBR processing units as claimed in claim 1, it is characterised in that：Described pre- denitrification pond, anaerobic pond, lack Bacteria bed is installed in oxygen pond, is placed with Ball-type packing in bacteria bed, the Ball-type packing in bacteria bed is fixed 's.

3. A3O+MBR processing units as claimed in claim 1, it is characterised in that：Biological filter is installed in described Aerobic Pond Bed, MBBR fillers are placed with bacteria bed, MBBR fillers are moveable.

4. A3O+MBR processing units as claimed in claim 1, it is characterised in that：The ectosome of described A3O+MBR processing units Top is provided with aeration supervisor and aerator, is respectively mounted between the centre of aeration branch pipe and aeration branch pipe and aeration supervisor There is gas control valve.

5. A3O+MBR processing units as claimed in claim 1, it is characterised in that：It is mounted in described Aerobic Pond, membrane cisterna Aeration head, aeration branch pipe, gas control valve.

6. A3O+MBR processing units as claimed in claim 1, it is characterised in that：Described bacteria bed is grid box, case The top of body is apart from outlet pipe low side 82-152mm, and the bottom of casing is apart from pond inner bottom part 382-452mm.