CN105923896A - Method for treating domestic wastewater with porous multilayer hollow PTFE-MBR membrane - Google Patents
Method for treating domestic wastewater with porous multilayer hollow PTFE-MBR membrane Download PDFInfo
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- CN105923896A CN105923896A CN201610309948.4A CN201610309948A CN105923896A CN 105923896 A CN105923896 A CN 105923896A CN 201610309948 A CN201610309948 A CN 201610309948A CN 105923896 A CN105923896 A CN 105923896A
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- 239000012528 membrane Substances 0.000 title claims abstract description 50
- 238000000034 method Methods 0.000 title claims abstract description 26
- 239000010840 domestic wastewater Substances 0.000 title abstract 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 72
- 239000010802 sludge Substances 0.000 claims abstract description 52
- 239000010865 sewage Substances 0.000 claims abstract description 48
- 230000008569 process Effects 0.000 claims abstract description 16
- 238000000926 separation method Methods 0.000 claims abstract description 15
- 230000001105 regulatory effect Effects 0.000 claims abstract description 14
- 239000003344 environmental pollutant Substances 0.000 claims abstract description 9
- 231100000719 pollutant Toxicity 0.000 claims abstract description 9
- 230000004103 aerobic respiration Effects 0.000 claims abstract description 5
- 239000005416 organic matter Substances 0.000 claims abstract description 5
- 238000007599 discharging Methods 0.000 claims abstract description 4
- 239000008239 natural water Substances 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 25
- 238000005273 aeration Methods 0.000 claims description 18
- 241000894006 Bacteria Species 0.000 claims description 16
- 239000000725 suspension Substances 0.000 claims description 12
- 239000000945 filler Substances 0.000 claims description 10
- 238000005516 engineering process Methods 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 9
- 238000004140 cleaning Methods 0.000 claims description 8
- 230000000694 effects Effects 0.000 claims description 8
- 244000005700 microbiome Species 0.000 claims description 8
- 238000003672 processing method Methods 0.000 claims description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 7
- 229910052799 carbon Inorganic materials 0.000 claims description 7
- 229910052760 oxygen Inorganic materials 0.000 claims description 7
- 239000001301 oxygen Substances 0.000 claims description 7
- 239000007787 solid Substances 0.000 claims description 7
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 claims description 6
- 230000005484 gravity Effects 0.000 claims description 6
- 230000000717 retained effect Effects 0.000 claims description 6
- 230000000903 blocking effect Effects 0.000 claims description 5
- 230000007423 decrease Effects 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 5
- 239000012535 impurity Substances 0.000 claims description 5
- 238000005276 aerator Methods 0.000 claims description 4
- 238000005842 biochemical reaction Methods 0.000 claims description 4
- 238000000354 decomposition reaction Methods 0.000 claims description 4
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 3
- 238000010521 absorption reaction Methods 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 239000013078 crystal Substances 0.000 claims description 3
- 238000006396 nitration reaction Methods 0.000 claims description 3
- 230000001546 nitrifying effect Effects 0.000 claims description 3
- 229910052698 phosphorus Inorganic materials 0.000 claims description 3
- 239000011574 phosphorus Substances 0.000 claims description 3
- 230000037452 priming Effects 0.000 claims description 3
- 230000002062 proliferating effect Effects 0.000 claims description 3
- 239000008213 purified water Substances 0.000 claims description 3
- 239000004576 sand Substances 0.000 claims description 3
- 238000010926 purge Methods 0.000 claims description 2
- 238000004065 wastewater treatment Methods 0.000 abstract description 3
- 206010002660 Anoxia Diseases 0.000 abstract 3
- 241000976983 Anoxia Species 0.000 abstract 3
- 206010021143 Hypoxia Diseases 0.000 abstract 3
- 230000007953 anoxia Effects 0.000 abstract 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 10
- 239000004810 polytetrafluoroethylene Substances 0.000 description 10
- 230000008901 benefit Effects 0.000 description 9
- 230000004907 flux Effects 0.000 description 9
- 239000011150 reinforced concrete Substances 0.000 description 9
- 229910000831 Steel Inorganic materials 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 239000003814 drug Substances 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 4
- 238000004062 sedimentation Methods 0.000 description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000005708 Sodium hypochlorite Substances 0.000 description 3
- 239000004567 concrete Substances 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 239000012510 hollow fiber Substances 0.000 description 3
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000002033 PVDF binder Substances 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 238000013019 agitation Methods 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 2
- 229920011532 unplasticized polyvinyl chloride Polymers 0.000 description 2
- 239000002028 Biomass Substances 0.000 description 1
- 238000003335 Production assurance Methods 0.000 description 1
- 241000700605 Viruses Species 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000031018 biological processes and functions Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000012459 cleaning agent Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002906 microbiologic effect Effects 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000001175 rotational moulding Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 230000002000 scavenging effect Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
-
- 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
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1236—Particular type of activated sludge installations
- C02F3/1268—Membrane bioreactor systems
-
- 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Activated Sludge Processes (AREA)
Abstract
The invention provides a method for treating domestic wastewater with a porous multilayer hollow PTFE-MBR membrane. The method comprises the steps that domestic wastewater is collected through a pipe network and then enters a wastewater treatment station, wherein gratings are arranged at the front end of the wastewater treatment station, and the gaps between the gratings is 5 mm; water out of the gratings automatically flows into an oil separation tank; water out of the oil separation tank enters a regulating tank; water out of the regulating tank is lifted to an anoxia tank through a submersible sewage pump, wherein the primary function of the anoxia tank is denitrification; water out of the anoxia tank automatically flows into an aerobic tank, wherein the aerobic tank performs the functions of making active sludge carry out aerobic respiration, further decomposing organic matter into inorganic matter and removing pollutants; water out of the aerobic tank automatically flows into a membrane bioreactor; water of the membrane bioreactor is sucked to a discharging tank through a self-priming pump and then discharged into a natural water body through a Parshall trough. According to the method, the occupied area is small, the technological process is short, the water quality of outlet water is stable, it is ensured that outlet water is clear and transparent, and high-quality produced water is obtained.
Description
Technical field
The present invention relates to sanitary sewage disposal technical field, particularly relate to a kind of porous multilayer hollow PTFE-MBR film to life
The processing method of sewage alive.
Background technology
The main technique technology of sewage disposal specifically includes that biologic treating technique, natural treatment technology.Up to a hundred through the mankind
Year practice, generally acknowledge with biological treatment as economy-benefit ratio preferably (cost-effective) in the world.The biggest
Most sewage treatment plants use biological treatment.Sewage Biological Treatment is divided into anaerobic bio-treated and Aerobic biological process two big
Class.
The limited efficacy of Anaerobic Microbiological Treatment Technology degradation of organic substances, effluent quality is relatively inaccessible to the requirement of this project, and
Taking up an area relatively large, gas sampling processes the most bad solution of problem.Do not consider to be used alone.This time in design, change excrement
Pond is as typical Anaerobic Treatment, as the facility of standard for the pre-treatment of sewage disposal.
Traditional activated sludge process investment is high, operating cost is high, it is big to take up an area, mud handling capacity is big, it is complex (logical to process
Anaerobic sludge to be used digests).
A/O biofilm reactor is the technology that a kind of comparison is suitable for small-sized sanitary sewage disposal, with traditional activated dirt
Mud method processing system compares, and biomembrance process is easily maintained the advantages such as operation, energy saving, floor space is little, mud is few.Film is raw
Thing reactor is excellent for its advantage with stable effluent quality, but one-time investment cost is slightly higher.As standard water discharge to be processed is discharged,
And the healthy of around people can not be affected, therefore effluent quality is required higher, and require there is higher stability.Therefore film
Biological reactor process processes technique as first-selection.
Summary of the invention
It is an object of the invention to provide a kind of porous multilayer hollow PTFE-MBR film processing method to sanitary sewage, with
Solve above-mentioned technical problem.
The technical problem to be solved realizes by the following technical solutions:
A kind of porous multilayer hollow PTFE-MBR film processing method to sanitary sewage, it is characterised in that step is:
Sanitary sewage enters Sewage Disposal after pipe network is collected, and Sewage Disposal front end arranges grid, and grid gap is 5mm,
Major function is to remove large granular impurity and suspension in sewage, prevents above material from blocking water pump vane, and scratches MBR film；
Grid water outlet gravity flow enters oil interceptor, and oil interceptor main purpose is to remove the oil slick in sewage；
Oil interceptor water outlet enters regulating reservoir, and the major function of regulating reservoir is sewage to carry out average all amounts process, it is ensured that follow-up place
Effective stable operation of reason；
Regulating reservoir water outlet is promoted to anoxic pond by proof submersible sand discharging pump, and the function of anoxic pond is denitrogenation, and denitrifying bacterium utilizes sewage
In organic matter as carbon source, a large amount of NO that will bring in membrane cisterna returned sludge3 -And NO2 -It is reduced to N2And be discharged in air,
BOD concentration continues to decline, NO3 -Concentration the most significantly declines；
Anoxic pond water outlet gravity flow enters Aerobic Pond, and the effect of Aerobic Pond is to allow activated sludge carry out aerobic respiration, further having
Machine thing resolves into inorganic matter, removes pollutant；Run and be intended to control well other of oxygen content and microorganism and respectively need condition
Good, can be the most just microorganism there is greatest benefit carry out aerobic respiration；
Aerobic Pond water outlet is from flowing into membrane bioreactor, and membrane bioreactor utilizes the knot of membrane separation technique and technology of biological membrane
Close, there is high efficient solid and liquid separation performance, utilize the characteristic of film simultaneously, make activated sludge not run off with water outlet, shape in biochemistry pool
Becoming the activated sludge concentration of 8000-30000 mg/L ultrahigh concentration, make pollutant complete decomposition, therefore effluent quality is good, steady
Fixed, go out water bacteria, suspension and turbidity close to zero；
Membrane bioreactor water outlet is pumped to blowoff basin by self priming pump, enters natural water by Pasteur's measuring tank.By place
Water outlet after reason reaches " urban wastewater treatment firm pollutant emission standard " (GB18918-2002) one-level A standard.
Aerobic Pond under aeration state, the microorganism in prolific activated sludge and nitrifying bacteria community, phosphobacteria, fall
Solve or carbon containing, ammonia nitrogen, phosphorus organic pollution materials in absorption water, to reach the purpose purified water；Aerobic life is set in Aerobic Pond
Thing filler and pipe type rubber micro-hole aerator, run with activated sludge and filler hybrid mode, have good OTR.
Utilize MBR film that the water containing dirt in pond is filtered, it is achieved mud-water separation；On the one hand, film has retained reaction tank
In microorganism, make the activated sludge concentration in pond increase, reach the highest level, make the biochemical reaction of degraded sewage carry out
More thorough more rapidly, on the other hand, due to the high filtering precision of film, it is ensured that water outlet is as clear as crystal, obtain high-quality product water；
MBR membrane module system and supporting outlet system, purging system, aerating system are set in MBR membrane cisterna；In MBR film district
Aeration has two purposes, and one is the air water vibration around membrane module, keeps film surface cleaning, and two is for providing biodegradable
Required oxygen；By the efficient crown_interception of film, whole bacteriums and suspension are all dammed in aeration tank, can be effective
Retain nitrifier, make nitration reaction be smoothed out, effectively remove ammonia nitrogen；The big molecule being difficult to degrade can be retained organic simultaneously
Thing, extends its time of staying in the reactor, is allowed to be degraded to greatest extent；Excess sludge passes through film district excess sludge
Pump is periodically discharged, can the concentration of activated sludge and sludge age in control system.
The perforated membrane that MBR film is i.e. made up of polytetrafluoroethylmaterial material, i.e. PTFE-MBR film.
Chemically-resistant medicament, the plastic material that heat resistance is the most superior, compare the MBR of other materials (PVDF, PE etc.)
Film has the characteristic being unsurpassed in excellence.
It is a kind of hydrophilic polyfluortetraethylemicroporous MBR film product, is made up of 100%PTFE porous material, compares other
The MBE films such as PVDF, PE, have 5 big advantages:
Aquifer yield is high；
Sludge concentration is more than 2 times of other films；
Service life is more than the twice of other films；
Permeant flux recovers thoroughly；
Dry type can preserve, shut down storage convenient.
The present invention compares with traditional handicraft, is different from activated sludge process, does not use sedimentation basin to carry out separation of solid and liquid, but makes
Substitute sedimentation basin with MBR film, therefore there is high efficient solid and liquid separation performance, utilize the characteristic of film simultaneously, make activated sludge not with going out
Current lose, and form the activated sludge concentration of 8000-30000 mg/L ultrahigh concentration, make pollutant complete decomposition in biochemistry pool,
Therefore effluent quality is good, stable, goes out water bacteria, suspension and turbidity close to zero.Can directly discharge after sanitary sewage disposal
Even can have, with direct reuse, the advantage that traditional handicraft does not possesses in terms of sewage disposal.
Advantage:
(1) capacity of resisting impact load is strong, and effluent quality is excellent, and stable water outlet, avoids risk.
(2) technique is simple.Effect is efficiently separated, it is not necessary to individually set up the solid-liquid separation tanks such as precipitation, filtration due to film；
MBR can realize being kept completely separate of reactor hydraulic detention time (HRT) and sludge age (SRT), makes operation control more flexible
Stable.
(3) floor space is few.In processing unit, biomass can maintain high concentration, makes volumetric loading be greatly improved, simultaneously
The high efficiency of UF membrane, makes processing unit hydraulic detention time be greatly shortened, thus greatly reduce biochemistry pool floor space and
Construction investment.
(4) sludge discharge is few, only the 30% of traditional handicraft, and Treatment of Sludge expense is low, reduces secondary pollution.
(5) membrane bioreactor can filter the harmful substance such as bacterium, virus, can save significantly on what dosing sterilization was brought
Longtime running expense also expands reusing sewage scope.
(6) preferably equipment and automation, management simplicity.
(7) modularized design, it is easy to dilatation.
PTFE-MBR film is a kind of porous multilayered hollow fiber film, has the advantage that in terms of processing sewage
(1) MBR system can put forward high yield water water quality further, makes stable effluent quality be better than discharge standard；
(2) not fracture of wire, nothing breakage in PTFE film bundle validity period, does not have any SS and lets out excessive and run mud phenomenon；
(3) can clean with strong acid and strong base strong oxidizer with PTFE film bundle, film permeant flux is the most undamped, 5 years the decline of membrane flux
Rate is less than 2%；Other MBR film is as serious dirty stifled in occurred, flux is difficult to recover；
(4) PTFE film bundle percent opening is more than 90%, therefore film permeant flux is more than 2 times of common MBR film；Film permeant flux is high, film
Consumption is the fewest, and membrane cisterna floor space is the least；
(5) membrane area is few, and MBR pond aeration rate is the least, and MBR energy consumption, mainly at blower fan, reduces aeration rate and reduces energy consumption exactly, i.e. subtract
Lack early stage and bought the expense of blower fan, save again later stage operation energy consumption expense；
(6) PTFE-MBR membrane cisterna sludge concentration is up to 30000mg/l, and sludge concentration is high, and biochemical effects is more thorough, outlet effect
Can be more preferably；
(7) PTFE film Shu Wuxu off-line is invaded bubble and is cleaned, and on-line cleaning saved medicament expense use, and without lifting appliance, more without
Separately build service sink；Also mitigate the working strength of Membrane cleaning simultaneously；
(8) PTFE film bundle permanent hydrophilic, as when maintenance, stopping production, membrane cisterna does not has water, does not interferes with film quality；PTFE-MBR film can
Again preserve from water dry method entering after water uses operation, and membrane flux and quality are not had any impact；
(9) PTFE film bundle Operation and Maintenance is the most extensive, and spoilage is extremely low, unless artificial or knife-edge damage, in useful life
Damage will not be produced.
Multiclass MBR membranous system contrasts (by 200m3/ d project is added up)
MBR membranous system cleaning agent usage amount contrast (200m3/ d project is added up)
By above contrast, optional holes multilayer hollow fiber membranous system, advantage is as follows:
(1) porous multilayered hollow fiber film operation energy consumption is the lowest, and system automation degree is higher, and it is convenient to run, simple to operate, exempts from
Safeguard；
(2) the cleaning systems cycle was up to more than 6 months；
(3) cleaning systems expense is lower compared to other material film products, and scavenging period is shorter；
(4) film production assurance, quality guarantee 5 years not fracture of wire is without breakage, and 5 terms ensured that membrane flux can recover more than 95%, simultaneously without
Fracture of wire (except human factor), actual life was up to more than 15 years；
(5) film silk tensile strength is high, and service life is long, reduces film depreciable cost；
(6) floor space is little, and technological process is short, stable effluent quality.
Accompanying drawing explanation
Fig. 1 is the process flow diagram of the present invention；
Fig. 2 is the system schematic of the embodiment of the present invention.
Detailed description of the invention
For the technological means making the present invention realize, creation characteristic, reach purpose and be easy to understand with effect, below knot
Close specific embodiments and the drawings, the present invention is expanded on further, but following embodiment is only the preferred embodiments of the present invention, not
All.Based on the embodiment in embodiment, those skilled in the art are obtained on the premise of not making creative work
Other embodiments, broadly falls into protection scope of the present invention.
The specific embodiment of the present invention is described below in conjunction with the accompanying drawings.
Refer to shown in Fig. 1, Fig. 2,
A kind of porous multilayer hollow PTFE-MBR film processing method to sanitary sewage, step is:
Sanitary sewage enters Sewage Disposal after pipe network is collected, and Sewage Disposal front end arranges grid, and grid gap is 5mm,
Major function is to remove large granular impurity and suspension in sewage, prevents above material from blocking water pump vane, and scratches MBR film；
Grid water outlet gravity flow enters oil interceptor, and oil interceptor main purpose is to remove the oil slick in sewage；Oil interceptor water outlet enters regulating reservoir,
The major function of regulating reservoir is sewage to carry out average all amounts process, it is ensured that effective stable operation of subsequent treatment；Regulating reservoir goes out
Water is promoted to anoxic pond by proof submersible sand discharging pump, and the premiere feature of anoxic pond is denitrogenation, and it is organic that denitrifying bacterium utilizes in sewage
Thing is as carbon source, a large amount of NO that will bring in membrane cisterna returned sludge3 -And NO2 -It is reduced to N2And be discharged in air, BOD concentration continues
Continuous decline, NO3 -Concentration the most significantly declines；Anoxic pond water outlet gravity flow enters Aerobic Pond, and the effect of Aerobic Pond is to allow activated sludge
Carry out aerobic respiration, further organic matter is resolved into inorganic matter.Aerobic Pond water outlet is from flowing into membrane bioreactor, membrane bioreaction
Answering device to utilize the combination of membrane separation technique and technology of biological membrane, it is different from biomembrance process, does not use sedimentation basin to carry out solid-liquid and divides
From, but use MBR film to substitute sedimentation basin, therefore there is high efficient solid and liquid separation performance, utilize the characteristic of film simultaneously, make activity dirty
Mud does not runs off with water outlet, forms the activated sludge concentration of 8000-30000 mg/L ultrahigh concentration, make pollutant in biochemistry pool
Complete decomposition, therefore effluent quality is good, stable, goes out water bacteria, suspension and turbidity close to zero；Membrane bioreactor water outlet
It is pumped to blowoff basin by self priming pump, enters natural water by Pasteur's measuring tank." cities and towns dirt is reached by the water outlet after processing
Water treatment plant's pollutant emission standard " (GB18918-2002) one-level A standard.
Technical process illustrates:
1, grid canal
Grid canal major function is separation of solid and liquid, arranges fine fack and removes large granular impurity and suspension, prevents above material from blocking up
Plug water pump vane, and scratch MBR film.Grid canal is built jointly with oil interceptor, uses reinforced concrete structure.
Available depth: 1.0m
Structure type: steel concrete
Quantity: 1
Configuration equipment:
(1) fine fack
It is mainly used in intercepting oarse-grained solid impurity and suspension, prevents above material from blocking water pump vane, and scratch MBR
Film.
Quantity: 1
Grid gap: 5mm
2, oil interceptor
The major function of oil interceptor is water-oil separating, and oil interceptor uses reinforced concrete structure.
Structure type: steel concrete
Quantity: 1
3, regulating reservoir
In view of the erratic behavior of sewage discharge, this case arranges regulating reservoir the sewage quality water yield is carried out the process of homogeneous all amounts,
Ensure the stable operation of aftertreatment systems.
Regulating reservoir uses reinforced concrete structure, and the time of staying is 4.2 hours,
The time of staying: 3.2h
Structure type: steel concrete
Quantity: 1
Configuration equipment:
(1) aeration agitation system
Quantity: 1 set
Aeration form: boring aeration
Material: UPVC
(2) sewage pump (cutting-type)
Quantity: 2 (the using and the reserved)
(3) tank level control system
Ultrasonic solution level controller is used to realize Liquid level
Quantity: 1
Output: 4-20mA
(4) electromagnetic flowmeter
Quantity: 1
Output: 4-20mA
4, anoxic pond
Sewage enters anoxic pond, the returned sludge also having membrane cisterna simultaneously entered.The premiere feature of anoxic pond is denitrogenation, denitrification
Bacterium utilizes the organic matter in sewage as carbon source, a large amount of NO that will bring in membrane cisterna returned sludge3 -And NO2 -It is reduced to N2And discharge
In air, BOD concentration continues to decline, NO3 -Concentration the most significantly declines.Set aeration agitation system in pond, control anoxic pond
Dissolved oxygen is within the scope of 0.2-2mg/L.
Anoxic pond uses reinforced concrete structure, and hydraulic detention time is 2-3 hour,
The time of staying: 2-3h
Structure type: Reinforced Concrete Structure
Quantity: 1
Configuration equipment:
(1) filler (elastic filler)
Model: Φ 150
Material: PP
(2) filler support
Material: screw-thread steel anticorrosion
(3) aerating system
Quantity: 1 set
Aeration form: boring aeration
Material: UPVC
Manufacturer:
(4) dissolved oxygen meter
Range: 0.00 ~ 19.99mg/L 0.0 ~ 199.9%
Quantity: 1
Output: 4-20mA
Manufacturer:
5, Aerobic Pond
Aerobic Pond under aeration state, the microorganism in prolific activated sludge and nitrifying bacteria community, phosphobacteria, degraded or
Carbon containing, ammonia nitrogen, phosphorus organic pollution materials in absorption water, to reach the purpose purified water.Arrange in pond aerobic biologic packing material with
And pipe type rubber micro-hole aerator, run with activated sludge and filler hybrid mode, there is good OTR.
Hydraulic detention time: 4-6h
Structure type: Reinforced Concrete Structure
Quantity: 1
Configuration:
(1) air blast
Quantity: 2
(2) plate-type aerator
Parameter: 1.5-3m3/ * h
Material: rubber membrane+ABS
(3) filler (elastic filler)
Model: Φ 150
Material: PP
(4) filler support
Material: screw-thread steel anticorrosion
6, membrane cisterna
Utilize film that the water containing dirt in biochemical reaction tank is filtered, it is achieved mud-water separation.On the one hand, film has retained reaction tank
In microorganism, make the big increase of the activated sludge concentration in pond, reach the highest level, make the biochemical reaction of degraded sewage carry out
Obtain more thorough more rapidly, on the other hand, due to the high filtering precision of film, it is ensured that water outlet is as clear as crystal, obtain high-quality product
Water.
The systems such as MBR membrane module system and supporting water outlet, cleaning, aeration are set in pond.Aeration in MBR film district has two
Individual purposes, one is the air water vibration around membrane module, keeps film surface cleaning, and two for providing biodegradable required
Oxygen.By the efficient crown_interception of film, whole bacteriums and suspension are all dammed in aeration tank, can be with effectively catching nitrification
Bacterium, makes nitration reaction be smoothed out, and effectively removes ammonia nitrogen；The larger molecular organics being difficult to degraded can be retained simultaneously, extend it
The time of staying in the reactor, it is allowed to be degraded to greatest extent.Excess sludge is periodically arranged by film district residual sludge pump
Go out, can the concentration of activated sludge and sludge age in control system.
Membrane cisterna body
Structure type: Reinforced Concrete Structure
Configuration:
(1) MBR module
Material: PTFE(polytetrafluoroethylene (PTFE))
Membrane area: 12m2/
Flux: 0.3-0.8m3/m2* sky
(2) membrane support
Quantity: 1 set
Material: stainless steel 304
(3) suction pump
Quantity: 2 (the using and the reserved)
(4) water tank is cleaned
Quantity: 1
Material: PE rotational moulding
(5) pump is cleaned
Quantity: 1
(6) dissolved oxygen meter
Range: 0.00 ~ 19.99mg/L 0.0 ~ 199.9%
Quantity: 1
Output: 4-20mA
(7) ultrasonic solution level controller
Output: 4-20mA
Quantity: 1
(8) sludge reflux pump/sludge pump
Quantity: 2
6, discharge pond
Structure type: Reinforced Concrete Structure
The time of staying: 30min
7, Pasteur's measuring tank groove
Pond body size: construct according to Pasteur's groove design specification
8, sludge concentration tank
The excess sludge of membrane cisterna, in sludge pump is pumped to sludge-tank, is periodically disposed by outward transport after plate and frame filter press press filtration.Dirty
Mud sump uses ground type reinforced concrete structure, and the sludge condensation time is 24 hours
Configuration:
(1) screw pump (filter press feed pump)
Quantity: 1
(2) filter press
Quantity: 1
(3) PAM chemicals dosing plant
Quantity: 1 set
Influent waste water water quality index list
Treatment agent selects to consume with medicine
Add medicament needed for this project and mainly have hydrochloric acid, sheet alkali, sodium hypochlorite and PAM.
1. acid
Clean MBR film use, generally use 2% concentration HCl；
2. sheet alkali
Clean MBR film use, generally use 2% sodium hydroxide；
3. sodium hypochlorite
Clean MBR film use, generally use 0.5% concentration sodium hypochlorite；
④PAM
Playing flocculation, PAM solution concentration is generally 1 ‰～2 ‰, and dosage is 2～3 ‰.
The general principle of the present invention, principal character and advantages of the present invention have more than been shown and described.The technology of the industry
The personnel only present invention it should be appreciated that the present invention is not restricted to the described embodiments, described in above-described embodiment and specification
Preference, be not intended to limit the present invention, without departing from the spirit and scope of the present invention, the present invention also has various
Changes and improvements, these changes and improvements both fall within scope of the claimed invention.Claimed scope is by institute
Attached claims and equivalent thereof define.
Claims (3)
1. the porous multilayer hollow PTFE-MBR film processing method to sanitary sewage, it is characterised in that step is:
Sanitary sewage enters Sewage Disposal after pipe network is collected, and Sewage Disposal front end arranges grid, and grid gap is 5mm,
Major function is to remove large granular impurity and suspension in sewage, prevents above material from blocking water pump vane, and scratches MBR film；
Grid water outlet gravity flow enters oil interceptor, and oil interceptor main purpose is to remove the oil slick in sewage；
Oil interceptor water outlet enters regulating reservoir, and the major function of regulating reservoir is sewage to carry out average all amounts process, it is ensured that follow-up place
Effective stable operation of reason；
Regulating reservoir water outlet is promoted to anoxic pond by proof submersible sand discharging pump, and the function of anoxic pond is denitrogenation, and denitrifying bacterium utilizes sewage
In organic matter as carbon source, a large amount of NO that will bring in membrane cisterna returned sludge3 -And NO2 -It is reduced to N2And be discharged in air,
BOD concentration continues to decline, NO3 -Concentration the most significantly declines；
Anoxic pond water outlet gravity flow enters Aerobic Pond, and the effect of Aerobic Pond is to allow activated sludge carry out aerobic respiration, further having
Machine thing resolves into inorganic matter, removes pollutant；
Aerobic Pond water outlet is from flowing into membrane bioreactor, and membrane bioreactor utilizes the knot of membrane separation technique and technology of biological membrane
Close, there is high efficient solid and liquid separation performance, utilize the characteristic of film simultaneously, make activated sludge not run off with water outlet, shape in biochemistry pool
Becoming the activated sludge concentration of 8000-30000 mg/L ultrahigh concentration, make pollutant complete decomposition, therefore effluent quality is good, steady
Fixed, go out water bacteria, suspension and turbidity close to zero；
Membrane bioreactor water outlet is pumped to blowoff basin by self priming pump, enters natural water by Pasteur's measuring tank.
The porous multilayer hollow PTFE-MBR film the most according to claim 1 processing method to sanitary sewage, its feature exists
In:
Aerobic Pond under aeration state, the microorganism in prolific activated sludge and nitrifying bacteria community, phosphobacteria, degraded or
Carbon containing, ammonia nitrogen, phosphorus organic pollution materials in absorption water, to reach the purpose purified water；Arrange aerobe in Aerobic Pond to fill out
Material and pipe type rubber micro-hole aerator, run with activated sludge and filler hybrid mode, have good OTR.
Utilize MBR film that the water containing dirt in pond is filtered, it is achieved mud-water separation；On the one hand, during film has retained reaction tank
Microorganism, makes the activated sludge concentration in pond increase, reaches the highest level, makes the biochemical reaction of degraded sewage carry out more fast
Speed is more thorough, on the other hand, due to the high filtering precision of film, it is ensured that water outlet is as clear as crystal, obtains high-quality product water；
MBR membrane module system and supporting outlet system, purging system, aerating system are set in MBR membrane cisterna；In MBR film district
Aeration has two purposes, and one is the air water vibration around membrane module, keeps film surface cleaning, and two is for providing biodegradable
Required oxygen；By the efficient crown_interception of film, whole bacteriums and suspension are all dammed in aeration tank, can be effective
Retain nitrifier, make nitration reaction be smoothed out, effectively remove ammonia nitrogen；The big molecule being difficult to degrade can be retained organic simultaneously
Thing, extends its time of staying in the reactor, is allowed to be degraded to greatest extent；Excess sludge passes through film district excess sludge
Pump is periodically discharged, can the concentration of activated sludge and sludge age in control system.
The porous multilayer hollow PTFE-MBR film the most according to claim 1 processing method to sanitary sewage, its feature exists
In: the perforated membrane that MBR film is i.e. made up of polytetrafluoroethylmaterial material.
Priority Applications (1)
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| CN201610309948.4A CN105923896A (en) | 2016-05-11 | 2016-05-11 | Method for treating domestic wastewater with porous multilayer hollow PTFE-MBR membrane |
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| CN201610309948.4A CN105923896A (en) | 2016-05-11 | 2016-05-11 | Method for treating domestic wastewater with porous multilayer hollow PTFE-MBR membrane |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106977059A (en) * | 2017-05-22 | 2017-07-25 | 江苏万邦达环保科技有限公司 | A kind of new and effective sewage disposal system and method |
| CN107986566A (en) * | 2017-12-12 | 2018-05-04 | 陈值英 | Water conservancy and hydropower environmental project sewage purification treatment equipment |
| CN108975520A (en) * | 2018-08-17 | 2018-12-11 | 贵州迈博润科技有限公司 | Novel all-in-one MBR oil conte, sewage treatment device |
| CN109607965A (en) * | 2019-01-09 | 2019-04-12 | 湖北君集水处理有限公司 | A system and method for deep denitrification and dephosphorization of tail water of sewage treatment plant |
| CN110054361A (en) * | 2019-05-13 | 2019-07-26 | 辽宁石油化工大学 | A kind of electric field-enhanced MBR sewage treatment process |
| CN111302560A (en) * | 2019-11-12 | 2020-06-19 | 焦作煤业（集团）冯营电力有限责任公司 | Power plant sewage treatment method based on activated sludge process |
| CN113759832A (en) * | 2020-06-02 | 2021-12-07 | 中泰信达环保科技(武汉)有限公司 | Intelligent operation method for sewage plant |
| CN115043494A (en) * | 2022-07-06 | 2022-09-13 | 武汉辰雨环保科技有限公司 | Container type sewage treatment equipment system and process method |
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| CN101928096A (en) * | 2009-12-28 | 2010-12-29 | 清华大学 | Method and system for sewage treatment in ecologically sensitive areas |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106977059A (en) * | 2017-05-22 | 2017-07-25 | 江苏万邦达环保科技有限公司 | A kind of new and effective sewage disposal system and method |
| CN107986566A (en) * | 2017-12-12 | 2018-05-04 | 陈值英 | Water conservancy and hydropower environmental project sewage purification treatment equipment |
| CN108975520A (en) * | 2018-08-17 | 2018-12-11 | 贵州迈博润科技有限公司 | Novel all-in-one MBR oil conte, sewage treatment device |
| CN109607965A (en) * | 2019-01-09 | 2019-04-12 | 湖北君集水处理有限公司 | A system and method for deep denitrification and dephosphorization of tail water of sewage treatment plant |
| CN110054361A (en) * | 2019-05-13 | 2019-07-26 | 辽宁石油化工大学 | A kind of electric field-enhanced MBR sewage treatment process |
| CN111302560A (en) * | 2019-11-12 | 2020-06-19 | 焦作煤业（集团）冯营电力有限责任公司 | Power plant sewage treatment method based on activated sludge process |
| CN113759832A (en) * | 2020-06-02 | 2021-12-07 | 中泰信达环保科技(武汉)有限公司 | Intelligent operation method for sewage plant |
| CN115043494A (en) * | 2022-07-06 | 2022-09-13 | 武汉辰雨环保科技有限公司 | Container type sewage treatment equipment system and process method |
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