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 PDF

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Publication number
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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Prior art keywords
water
film
tank
membrane
sewage
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Inventor
杨磊
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Anhui Yangsen Environmental Protection Energy Saving Science & Technology Co Ltd
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Anhui Yangsen Environmental Protection Energy Saving Science & Technology Co Ltd
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Priority to CN201610309948.4A priority Critical patent/CN105923896A/en
Publication of CN105923896A publication Critical patent/CN105923896A/en
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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00Multistage treatment of water, waste water or sewage
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/001Processes for the treatment of water whereby the filtration technique is of importance
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/40Devices for separating or removing fatty or oily substances or similar floating material
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/02Aerobic processes
    • C02F3/12Activated sludge processes
    • C02F3/1236Particular type of activated sludge installations
    • C02F3/1268Membrane bioreactor systems
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/30Aerobic and anaerobic processes

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

A kind of porous multilayer hollow PTFE-MBR film processing method to sanitary sewage
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.
CN201610309948.4A 2016-05-11 2016-05-11 Method for treating domestic wastewater with porous multilayer hollow PTFE-MBR membrane Pending CN105923896A (en)

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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 kind of system and method for sewage treatment plant tail water advanced nitrogen dephosphorization
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
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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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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
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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
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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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