CN207375918U - MBR combined films town sewage treatment systems - Google Patents
MBR combined films town sewage treatment systems Download PDFInfo
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- CN207375918U CN207375918U CN201721340894.4U CN201721340894U CN207375918U CN 207375918 U CN207375918 U CN 207375918U CN 201721340894 U CN201721340894 U CN 201721340894U CN 207375918 U CN207375918 U CN 207375918U
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Abstract
The utility model discloses a kind of MBR combined films town sewage treatment systems, belong to technical field of sewage, including coarse rack connected in sequence, elevator pump, fine fack, setting pot, MBR film reactions pond and disinfectant component, film grid, AO biochemistry pools and distribution well have also been sequentially arranged between the setting pot, MBR film reactions pond, the MBR film reactions pond be unit membrane cisterna, the module composition that the unit membrane cisterna is made of the MBR membrane modules of different pore size；By the utility model treated town sewage, water quality is more excellent, and processing equipment is taken up an area less, and operation is more stable, has good economic value and social value.
Description
Technical field
The utility model is related to technical field of sewage more particularly to a kind of MBR combined films town sewage treatment systems.
Background technology
With the development of economy and society, requirement of the country to cities and towns quality of water environment is continuously improved.In the beginning of this century, to row
Enter the town sewage plant effluent quality in important waters, it is desirable that reach country《Urban wastewater treatment firm pollutant emission standard》
(GB18918-2002) level-one A standards（Referred to as " level-one A marks "）.In addition, with the progressively exacerbation of pollution, some are more tight
The standard of lattice is also put into effect therewith, for example Sichuan Province was in appearance in 2016《Sichuan Province's Ming River, a small bay in a river river water pollutants of water basin discharge mark
It is accurate》（DB51）, referred to as " Sichuan DB51 ", standard is as shown in table 1：
1 various discharge standards of table
Current urban wastewater treatment firm sewage water treatment method, activated sludge process and biofilm are its leading biological treatments
Technique, wherein, various types of activated sludge processes are still mainstream, account for more than 90%.
The microorganism of the activated sludge process is zoogloea structure, in suspension growth state, therefore at activated sludge
Reason system is also known as " suspension growth system ", wherein with " biological phosphate-eliminating denitrogenation（A2/O）Technique " is more representative；A2/ O techniques be
On the basis of common aeration, while solve the dephosphorization of sewage, Denitrogenation and the activated sludge process derived from；Its main process stream
Journey is generally：
Municipal sewage → coarse rack-Boosting pumping station → fine fack-setting pot → anaerobic pond → anoxic pond → aerobic（Aeration）
Pond → secondary settling tank → disinfection → Chinese effluent.
Then apposition growth supports the surface of carrier to the microorganism of the biomembrane process at it, so biomembrane processing system
System is also known as attached-growth system.Emerging film-bioreactor（Abbreviation MBR）Be one kind by film separation unit and biological treatment
The new water technology that unit is combined, and it is able in experimental study and engineering practice perfect, it has been more mature at present
Water purification technology, main process flow is：
Municipal sewage → coarse rack-Boosting pumping station → fine fack-setting pot → MBR reaction tanks → disinfection → Chinese effluent.
From the process above as can be seen that MBR falls within " activated sludge process ", for the process flow of MBR, with A2/O
It is no different, simply with microfiltration membranes, ultrafiltration membrane（M）It filters to take for A2" secondary settling tank " in/O is film separation unit and biological treatment list
Member is combined technique.
By MBR process, discharge water quality can reach " national ' level-one A marks ' " in table 1, still, can't
Reach " the Sichuan DB51 " in other more stringent standards, such as table 1.
Moreover, existing MBR treatment process, the following problem of generally existing in operation and maintenance：
1st, sludge concentration gradually rises in reaction tank, film can be caused to block, flux depression, cause fouling membrane, influence film
Service life；
2nd, fouling membrane, the absorption deposited particles of film surface, colloid, Pore Blocking can cause fouling membrane, film in membrane tissue
Reactor reduces year by year with the growth of run time, membrane flux, and producing water ratio is caused to decline, and the rise of membrane cisterna sludge concentration generates
Film blocks and aggravation fouling membrane, so as to reduce system service life（General 3-5）, increase and use operating cost；
3rd, the retention filtrate of micro-filtration membrane module（10%）And the work such as harmless treatment of chemical cleaning solution, add sewage
The maintenance management workload of factory；
4th, due to preventing film from blocking in operation, film surface will keep air purging, it is necessary to which a large amount of compressed airs, cause power consumption
Amount is big, and operating cost is relatively high；
5th, the clear water that membrane reactor is isolated passes through suction pump negative pressure water outlet, easy shape by the tiny branch pipe of each unit film group
Into each pipe flow, hydraulic pressure is unstable, and local short stream and bottleneck effect, increment transmembrane pressure easily occur for outlet pipeline system
（TMP）, film blocking is be easy to cause, influences whole water outlet.
The content of the invention
The purpose of this utility model, in that a kind of MBR combined films town sewage treatment system is provided, to solve above-mentioned ask
Topic.
To achieve these goals, the technical solution adopted in the utility model is such：
A kind of MBR combined films town sewage treatment system, including coarse rack connected in sequence, elevator pump, fine fack, sand setting
It is biochemical to be also sequentially arranged film grid, AO for pond, MBR film reactions pond and disinfectant component between the setting pot, MBR film reactions pond
Pond and distribution well, the MBR film reactions pond are unit membrane cisterna, and the unit membrane cisterna is made of the MBR membrane modules of different pore size
Module composition.
MBR film reactions pond is separately set in after biochemistry pool or in secondary settling tank by the utility model, while setting unit,
Multiple aperture multistage composite module membrane cisterna ensures the relatively independent operation of membrane module, improves system treatment effeciency.
As preferred technical solution：The aperture of the MBR films is 2-50nm.
As preferred technical solution：MBR film reactions pond is further equipped with membrane cisterna water distribution system.
To large and medium-sized scale, unit membrane cisterna number of combinations is more, adds MBR film reactions pond water distribution system, it is ensured that each membrane module
It is uniform to run water operation, improves system treatment effeciency.
MBR film reactions pond pipe gallery and equipment room are set, add mixed-liquor return system, it is ensured that MBR film reactions pond phase
Mating pipeline equipment working service is closed, control sludge concentration variation extends lifetime of system.
As preferred technical solution：Also set up to control MBR film reactions pond mixed liquor sludge concentration, membrane module, disorderly
The control system of mobility, water outlet suction pump discharge.
Control system is added for mixed liquor sludge concentration, membrane module in membrane reactor（TMP）, turbulence level, water outlet suction
The parameters such as pump discharge make related important parameter maintain rationally operation flat in running by detecting dynamic parameter variation and programme-control
Weighing apparatus, makes MBR system maintain as far as possible and is run under critical membrane flux state, maintenance system gently pollutes, low energy consumption operational mode.Subtract
Few fouling membrane, extension film use the membrane module service life.
As preferred technical solution：The MBR film reactions pond is additionally provided with membrane cisterna blower system.
Increase the membrane cisterna blow rate required, increase mixed liquor turbulence level, increase tunica fibrosa vibration, reduce film surface absorption border thickness
Degree, prevents film from blocking, and pretreatment adds ultra-fine grid, prevents system jams.
As preferred technical solution：The MBR film reactions pond is additionally provided with film backwashing system.
In addition to normal chemical cleans, hollow-fibre membrane just backwash and turbulent blowing-air system are added, increases mixed liquor
Turbulence level improves reactor cross-flow velocity and reduces film blocking to reduce film surface absorption boundary layer thickness.
For large and medium-sized scale, unit membrane cisterna number of combinations multiple reactor, water outlet, which is set, collects piping lane, using being arranged in juxtaposition
Form, water outlet suction pump arrangement form, using optimization constant flow perseverance hydraulic pamp combination, it is ensured that each unit membrane cisterna membrane module water outlet water
Amount is stablized, and reduces outlet pipeline and blocks, and maintenance management is convenient, prevents system membranes group from blocking.
The method that urban wastewater treatment is carried out using the above-mentioned MBR combined films town sewage treatment system of right, including with
Lower step：Town sewage intercepts tiny miscellaneous after coarse rack, elevator pump, fine fack, setting pot pretreatment through film grid coarse filtration
Object subsequently into AO biochemistry pools, passes through anaerobism, anoxia condition biological phosphate-eliminating, denitrogenation in AO biochemistry pools；It is given birth in aerobic condition
Object is degraded and digestion ammonia nitrogen, and water outlet is by distributing well uniformly with feeding MBR film reactions pond；By adding chemical agent, aerobic life
Object is degraded and UF membrane, is further processed residual contamination substance in pollutant, discharge or reuse after disinfection by ultraviolet light.
As preferred technical solution：In the MMBR film reactions pond, sludge loading is 0.06-0.1kgCOD/ (kg.d),
Mixed liquor sludge concentration, that is, MLSS is 5-10kg/m3。
As further preferred technical solution：MLSS is 8kg/m3。
The utility model people of the application is drawn by many experiments：For in MMBR film reactions pond, sludge concentration is for dynamic
State thickness and viscosity are directly proportional, can influence hydraulic power, shearing force, film surface filter layer, so as to influence membrane flux, excessively high is mixed
It closes liquid sludge concentration and fouling membrane easily occurs, membrane flux is greatly decreased, and when MLSS is in 8000mg/L, MLSS exists with membrane flux
Linear relationship, when MLSS increases to 18000mg/L, fouling membrane easily occurs for flux depression an order of magnitude.
As preferred technical solution：UF membrane driving is pumped out using the suction of immersion pressure in the MMBR film reactions pond
Water, hydrostatic pressure difference, that is, TMP are 3-50kPa, and design membrane flux is 9.6-15.6（m2.h）, TMP is 8-25 kPa.
Compared with prior art, the utility model has the advantage of：The A2O+MBR techniques of the utility model are based on life
The sewage treatment technique of object film system, be on the basis of original MBR techniques, with reference to the water quality characteristic of domestic town sewage,
It is additionally arranged advanced treating and further removes total nitrogen, total phosphorus, SS（Suspended matter）Pollutants unit is waited, buildup film reaction tank ensures operation
System, formation is stable, effluent quality is superior, the relatively simple town sewage advanced treatment system of management.
The advantages of this technique, includes：
（1）Micro-filtrate membrane filtration drastically increases effluent quality, can not only filter out SS completely, also can remove a large amount of colloid substances
Matter simultaneously reduces effluent color dilution, makes water outlet as clear as crystal, is conducive to reusing sewage；
（2）Since micro-filtrate membrane filtration has prevented the sludge loss of processing system, the sludge for being greatly improved processing system is dense
Degree reduces the volume of processing pond, so as at least save the floor space of 30-50%；
（3）High volumetric loading, high sludge concentration, long sludge age, excess sludge production are relatively low.
（4）Technological process is short, and mark upgrading is carried suitable for existing sewage treatment plant.
（5）Unit-modularized membrane cisterna arrangement form effectively improves system operation treatment effeciency.
（6）Attached corollary equipment, facility are arranged using piping lane, equipment room, it is ensured that plant maintenance and management facilitate specification, have
Effect ensures corollary equipment service life.
（7）The reasonable dynamic control of system for important parameters such as the parameters such as membrane cisterna mixed liquor sludge concentration, D0, membrane fluxs,
Reduce film blocking, extension film group uses the membrane module service life.
（8）Optimize the backwash of film group and cleaning, outlet system, improve film service life.
（9）The system integrated operation and supportability of reinforcing, handling system, effluent quality is more stable to reach " Sichuan
DB51 " standards.
Description of the drawings
Fig. 1 is the processing structure schematic diagram of the utility model embodiment.
In figure：1st, coarse rack；2nd, elevator pump；3rd, fine fack；4th, aerated grit chamber；5th, film grid；6th, AO biochemistry pools；7th, in
Entreat lift pump room and distribution well；8th, MBR film reactions pond；9th, mixed-liquor return pump house；10th, between water outlet pump house and package；11、
Disinfection by ultraviolet light canal；12nd, metering room；13rd, membrane cisterna blower system；14th, air blast computer room；15th, sludge collecting pit；16th, sludge dewatering
Between；17th, film backwash pump house；18th, film backwash liquid waste recovery pond；A, town sewage；B, carbon source；C, dephosphorization aluminium salt；D, nitrification mixing
Liquid；E, slag is handled；F, excess sludge；G, aerobic tank is aerated；H, film group purging supply；I, membrane cisterna is aerated；J, mixed liquor；K, acidity
Cleaning agent；L, water up to standard.
Specific embodiment
Below in conjunction with attached drawing, the utility model is described in further detail.
Embodiment：
Referring to Fig. 1, a kind of MBR combined films town sewage treatment system, including coarse rack 1 connected in sequence, elevator pump 2,
Fine fack 3, aerated grit chamber 4, film grid 5, AO biochemistry pools 6, central lift pump room and distribution well 7, MBR film reactions pond 8, mixing
10, disinfection by ultraviolet light canal 11 and metering room 12, the MBR film reactions pond 8 between liquid reflux pump house 9, water outlet pump house and package
For the module composition that unit membrane cisterna, the unit membrane cisterna are made of the MBR membrane modules of different pore size, aperture 2-50nm；
MBR film reactions pond is further equipped with membrane cisterna water distribution system；
It also sets up to control MBR film reactions pond mixed liquor sludge concentration, membrane module, turbulence level, water outlet suction pump discharge
Control system；
The MBR film reactions pond is additionally provided with membrane cisterna blower system 13, and the AO biochemistry pools 6 are also equipped with air blast computer room 14
Aerobic tank aeration G is carried out to AO biochemistry pools 6；
Processing method is：Town sewage A is obtained after coarse rack 1, elevator pump 2, fine fack 3, aerated grit chamber 4 pre-process
The processing slag E discharges arrived, then liquid is biochemical in AO subsequently into AO biochemistry pools 6 through the tiny sundries of 5 coarse filtration of film grid interception
Pond 6 passes through anaerobism, anoxia condition biological phosphate-eliminating, denitrogenation；Biodegradable and digestion ammonia nitrogen is carried out in aerobic condition, water outlet is in
Lift pump room and distribution well 7 are entreated uniformly with feeding MBR film reactions pond 8；By adding carbon source B（Such as sodium acetate）, dephosphorization aluminium salt C etc.
Chemical agent, aerobic biodegradation and UF membrane, are further processed residual contamination substance in pollutant, and membrane cisterna blower system 13 is right
MBR film reactions pond 8 carries out membrane cisterna aeration I and film group purging supply H, and sets mixed-liquor return pump house 9 and water outlet pump house and comprehensive
Equipment room 10 is closed, water L up to standard discharges or reuse after disinfection by ultraviolet light canal 11 and metering room 12；
Wherein, the mixed liquor J in mixed-liquor return pump house 9 is back to the aerobic reaction tank of AO biochemistry pools 6, central elevator pump
Excess sludge F in room and distribution well 7 is discharged into sludge collecting pit 15, and deep dehydration is carried out then between sludge dewatering 16
Nitrification mixed liquor D in deslagging again, central lift pump room and distribution well 7 is back to the pre- anoxic pond and anoxic pond of AO biochemistry pools 6；
Acid cleaning medicine is added in the liquid that MBR film reactions pond 8 is pumped out equipped with film backwash pump house 17, film backwash pump house 17
Agent K carries out backwash, and the waste liquid after backwash enters film backwash liquid waste recovery pond 18 and carries out professional recycling.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
All any modification, equivalent and improvement made within the spirit and principle of utility model etc., should be included in the utility model
Protection domain within.
Claims (6)
1. a kind of MBR combined films town sewage treatment system, including coarse rack connected in sequence, elevator pump, fine fack, sand setting
Pond, MBR film reactions pond and disinfectant component, it is characterised in that：The setting pot, MBR film reactions have also been sequentially arranged film between pond
Grid, AO biochemistry pools and distribution well, the MBR film reactions pond be unit membrane cisterna, the unit membrane cisterna by different pore size MBR films
The module composition of component composition.
2. MBR combined films town sewage treatment system according to claim 1, it is characterised in that：The aperture of the MBR films
For 2-50nm.
3. MBR combined films town sewage treatment system according to claim 1, it is characterised in that：Also match somebody with somebody in MBR film reactions pond
Have membrane cisterna water distribution system.
4. MBR combined films town sewage treatment system according to claim 1, it is characterised in that：It also sets up to control
MBR film reactions pond mixed liquor sludge concentration, membrane module, turbulence level, the control system of water outlet suction pump discharge.
5. MBR combined films town sewage treatment system according to claim 1, it is characterised in that：The MBR film reactions pond
It is additionally provided with membrane cisterna blower system.
6. MBR combined films town sewage treatment system according to claim 1, it is characterised in that：The MBR film reactions pond
It is additionally provided with film backwashing system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721340894.4U CN207375918U (en) | 2017-10-18 | 2017-10-18 | MBR combined films town sewage treatment systems |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721340894.4U CN207375918U (en) | 2017-10-18 | 2017-10-18 | MBR combined films town sewage treatment systems |
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| CN207375918U true CN207375918U (en) | 2018-05-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107721069A (en) * | 2017-10-18 | 2018-02-23 | 成都华日绿兰工程技术有限公司 | MBR combined films town sewage treatment system and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107721069A (en) * | 2017-10-18 | 2018-02-23 | 成都华日绿兰工程技术有限公司 | MBR combined films town sewage treatment system and method |
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220309 Address after: 610000 floor 1, No. 548, Gaopeng West Road, Wuhou District, Chengdu, Sichuan Patentee after: Sichuan Huari lvlan Industrial Group Co.,Ltd. Address before: 610000 Sichuan city of Chengdu Province east three road Wuhou District Wuke 6 Patentee before: CHENGDU HUARI LVLAN ENGINEERING TECHNOLOGY Co.,Ltd. |
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| TR01 | Transfer of patent right |