CN108455799A - Sewage disposal system and method - Google Patents
Sewage disposal system and method Download PDFInfo
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- CN108455799A CN108455799A CN201810299478.7A CN201810299478A CN108455799A CN 108455799 A CN108455799 A CN 108455799A CN 201810299478 A CN201810299478 A CN 201810299478A CN 108455799 A CN108455799 A CN 108455799A
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- 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
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- 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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
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- 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
- C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
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- 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
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- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
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- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
A kind of sewage disposal system of present invention offer and method utilize biological coupling filler and dynamic dual-membrane process to carry out sewage disposal.This system is characterized by having：Denitrification portion, including：Denitrification pond, the ferrous substrate biological coupling filler being filled in denitrification pond, and the impeller in denitrification pond；Aerobic portion, including：Multiple microporous aeration discs in aerobic tank bottom of pond are arranged in the aerobic tank being connected with denitrification bottom of pond portion, the floating stuffing being filled in aerobic tank；Dynamic Membrane processing unit, including：The Dynamic Membrane processing pond being connected at the top of aerobic tank, and be arranged in Dynamic Membrane processing pond, the membrane module containing microfiltration membranes；And clear water portion, including：The sterilizer on the water delivery pipe road of clear water reserviors is arranged in the clear water reserviors being connected with the water outlet of membrane module.After sewage disposal, COD, ammonia nitrogen, total phosphorus, total nitrogen removal rate respectively reach 95.13%, 92.22%, 94.37%, 89.43%.
Description
Technical field
The invention belongs to field of industrial waste water treatment, be related to it is a kind of using biological coupling filler and dynamic dual-membrane process into
The system and method for row sewage disposal.
Background technology
With the publication of national " ten, water ", sewage water denitrification technique is increasingly becoming the hot spot of the research of sewage disposal in recent years,
The common technique of sewage water denitrification has：Physical, electrochemical process, hyperfiltration/microfiltration film method, biochemical process etc., physics blow-off method easily occurs
Free ammonia loss generates secondary pollution；Single membrane processing method cost is higher；That there is also energy consumptions is higher for chemical electrolysis method, electric current effect
The low problem of rate.
Reaction of the bio-denitrification technology in biological treatment process is divided into aminating reaction, nitration reaction and anti-nitration reaction,
The removal of nitrogen is as realized by nitrifier and denitrifying bacterium, and sufficient carbon source is the key that denitrifying bacterium efficient denitrification.
Although conventional biological denitrification denitrogenation technology maturation is stablized, there are problems that carbon source deficiency to influence nitric efficiency.
In low carbon-nitrogen ratio sewage processing procedure, heterotroph denitrifying bacterium needs additional carbon that can just survive and realizes anti-
Denitrogenation is nitrified, reagent cost is not only increased and increases intractability.
Invention content
The present invention is to carry out to solve the above-mentioned problems, and it is an object of the present invention to provide a kind of using biological coupling filler and dynamic
State dual-membrane process carries out the system and method for sewage disposal, can reduce energy consumption, and effectively improve nitric efficiency.
The present invention to achieve the goals above, uses following scheme.
<System>
The present invention provides a kind of sewage disposal system, which is characterized in that has：Denitrification portion, including：Denitrification pond, is filled out
Fill the ferrous substrate biological coupling filler that denitrogenation is used in denitrification pond, and the impeller in denitrification pond；Aerobic portion,
Including：The aerobic tank being connected with denitrification bottom of pond portion is filled in the floating stuffing for promoting biofilm formation in aerobic tank,
With multiple microporous aeration discs in aerobic tank bottom of pond are set；Dynamic Membrane processing unit, including：What is be connected at the top of aerobic tank is dynamic
State film process pond, and be arranged in Dynamic Membrane processing pond, the membrane module containing microfiltration membranes；And clear water portion, including：With membrane module
The clear water reserviors that are connected of water outlet, the sterilizer on the water delivery pipe road of clear water reserviors is set.
Preferably, it in sewage disposal system according to the present invention, can also have the feature that：In denitrification pond
In, the loading density of ferrous substrate biological coupling filler is 30~50% (V/V).
Preferably, it in sewage disposal system according to the present invention, can also have the feature that：Denitrification portion is also
Multiple fillers including being erected in denitrification pond install grid beam, and ferrous substrate biological coupling uniform filling is filled in multiple fillers
Packing area is formed in installation grid beam, and the spacing of adjacent filler installation grid beam is 30~50cm, the bottom of packing area to anti-nitre
The distance for changing pond bottom of pond is 40~60cm.
Preferably, it in sewage disposal system according to the present invention, can also have the feature that：In aerobic tank
In, the loading density of floating stuffing is 30% (V/V).
Preferably, it in sewage disposal system according to the present invention, can also have the feature that：In denitrification pond
In aerobic tank, the concentration of activated sludge is 6500mg/L, and sludge loading is 0.14kgCOD/ (kgMLSSd).
Preferably, it in sewage disposal system according to the present invention, can also have the feature that：In denitrification pond
Interior, dissolved oxygen content should control as 0.5~1.5mg/L；In aerobic tank, dissolved oxygen content should control as 2~4mg/L.
Preferably, it in sewage disposal system according to the present invention, can also have the feature that：In membrane module
Filter membrane uses PTFE flat micro-filtrations, membrane aperture 0.02um, membrane flux >=500L/ (m under pure water medium2·h)；Wastewater media
Lower membrane flux is 40L/ (m2H), Dynamic Membrane processing unit further includes the multiple strong aeration tubes being arranged in Dynamic Membrane processing pond bottom of pond.
Preferably, it in sewage disposal system according to the present invention, can also have the feature that：Denitrification pond,
Aerobic tank, Dynamic Membrane processing pond volumetric ratio be 1:3~8:2, sterilizer is chlorine dioxide generator.
Preferably, it in sewage disposal system according to the present invention, can also have the feature that：Clear water portion is also wrapped
It includes：The water outlet pump being connected between the water outlet of membrane module and the water inlet of clear water reserviors, and it is connected to the backwash outlets of clear water reserviors
Backwash water pump between the water outlet of membrane module.
<Method>
The present invention also provides a kind of sewage water treatment method, use is above-mentioned<System>Described in sewage disposal system carry out
Sewage disposal, which is characterized in that include the following steps：Step 1：Sewage is introduced into denitrification pond, is added into denitrification pond anti-
Nitrobacteria/nitrobacteria or activated sludge, and nutriment culture is added, sewage mixing homogeneous and and iron are made using impeller
Matrix biopolymers couple uniform filling contact, and ferrous substrate biological coupling filler is catalyzed to form galvanic interaction release hydrogen, hydrogen autotrophy
Type denitrifying bacteria is reduced into nitrogen using hydrogen as the energy, by nitrate nitrogen, realizes denitrogenation；Meanwhile in denitrification pond
Sewage mixed liquor, which is flow automatically in bottom of pond by way of liquid level difference, flows into aerobic tank；Step 2：Aerobic microbiological is added into aerobic tank
Strain or activated sludge, and nutriment culture is added, in the surface of floating stuffing or internal formation biomembrane, while using micro-
Hole aeration plate carries out aeration aerating to mixed liquor；The aerobic microbiological on floating stuffing surface and internal facultative microbe pass through life
Organic matter is resolved into CO by the effect of object degradation2And H2O realizes the removal of organic pollution；Mixed liquor in aerobic tank passes through certainly
The mode of stream is from top thermally coupled flow film process pond；Step 3：Mixed liquor in Dynamic Membrane processing pond is under the action of negative pressure, active
Sludge and particulate matter are trapped in surface, activated sludge and particulate matter by membrane module and are constantly accumulated in film surface, form filter
Cake layer, cake layer, which is attached to the micro-filtration film surface in membrane module, becomes film medium, forms dynamic membrane filtering, and water purification penetrates microfiltration membranes
It is admitted to clear water reserviors from the water outlet of membrane module；Meanwhile the part mixed liquor in Dynamic Membrane processing pond is then straight by conveyance conduit
It takes back and flow in denitrification pond；Step 4：Using sterilizer to being discharged from water delivery pipe road after water outlet progress sterilizing, part
Water purification is used to carry out regular backwash to membrane module.
The effect of invention
Sewage disposal system and method according to the present invention, because ferrous substrate biological coupling filler is made with chemical catalysis
With catalytic activity is high, without adding medicament, can utilize H by cultivating autotrophic type strain2For the energy, nitrate nitrogen is reduced into
Nitrogen removes, and solves the problems, such as that carbon source deficiency causes nitric efficiency low in traditional denitrification process, in water inlet low ratio of carbon to ammonium, low temperature
Under environment under low pressure, biological coupling filler is more advantageous compared with other fillers, meanwhile, biological coupling filler synchronize realize nitrification with it is anti-
Nitrification, the residence time is shortened compared with conventional biochemical facture, volumetric loading and sludge loading with bigger；Dynamic Membrane processing unit
In, particulate matter is constantly accumulated in the micro-filtration film surface of membrane module forms cake layer, and cake layer can replace microfiltration membranes to become
Film medium forms dynamic membrane filtering, has that flux is big, easily backwash using dynamic membrane filtering, and it is excellent that the requirement to membrane material is wide in range etc.
Point.
Description of the drawings
Fig. 1 be in embodiment sewage disposal system structural schematic diagram；
Fig. 2 is that biological coupling filler filler is mounted on the front view in installation grid beam in embodiment；
Fig. 3 is that biological coupling filler filler is mounted on the side view in installation grid beam in embodiment；
Fig. 4 is the structural schematic diagram of MBR membrane modules in embodiment.
Specific implementation mode
Sewage disposal system according to the present invention and method are elaborated referring to the drawings.
<Embodiment>
As shown in Figure 1, sewage disposal system 10 has denitrification portion 20, aerobic portion 30, Dynamic Membrane processing unit 40, Yi Jiqing
Water portion 50.
As shown in Figures 1 to 3, denitrification portion 20 includes denitrification pond 21, ferrous substrate biological coupling filler 22, multiple fillers peace
Fill grid beam 23, impeller 24 and intake pump 25.
In denitrification pond 21, dissolved oxygen content should control as 0.5~1.5mg/L, and dissolved oxygen (DO) contains in the present embodiment
Amount control is 1.5mg/L, and the sewage mixed liquor residence time is generally 4h or so, and the concentration of activated sludge is 6500mg/L, dirty
Mud load is 0.14kgCOD/ (kgMLSSd).
Ferrous substrate biological coupling filler 22 is filled in denitrification pond 21, and packed density is 30~50% (V/V).Ferrous substrate
Biological coupling filler 22 is commercial product, by a certain proportion of Zero-valent Iron, catalyst, adhesive, wooden powder's activated carbon, foaming
Agent is made through 1200 DEG C of granulation, drying, anaerobic high-temperature calcinations.Ferrous substrate biological coupling filler 22 is filled in by polyethylene or poly- third
In hollow fish netted spheroid made of alkene material, coupling filler bulb diameter can be 6~10cm, 1000/m3。
Each filler installation grid beam 23 is all mounted in denitrification pond 21 in parallel to each other, and adjacent filler installs net
The spacing of screen work 23 is 30~50cm.Ferrous substrate biological coupling filler 22 is uniformly filled in shape in each filler installation grid beam 23
At packing area, the distance of bottom to 21 bottom of pond of denitrification pond of packing area is 40~60cm.In the present embodiment, such as the institutes of Fig. 2 and 3
Show, it is stainless (steel) wire screen work that filler, which installs grid beam 23, and width L2 is set as 10cm, height L1 and width L3 and denitrification pond 21
It is corresponding；Support arm 23a is arranged in four edges that filler installs grid beam 23, and support leg 23b is arranged at support arm 23a,
Ferrous substrate biological coupling filler 22 can be hung in reaction tank, in the present embodiment, the flying height (bottom of packing area to anti-nitre
Change the distance of 21 bottom of pond of pond) it is 50cm；Correspondingly, bracket can be arranged on 21 inner wall of denitrification pond, determined according to filler loadings
The spacing and intensity of support leg；In addition the bottom installation support leg of grid beam 23 can also be installed to keep packing area outstanding in filler
It is empty.
Impeller 24 is mounted in denitrification pond 21, for making the mixed liquor homogeneous in denitrification pond 21 and being given birth to ferrous substrate
Object couples filler 22 and uniformly contacts.
Aerobic portion 30 includes aerobic tank 31, floating stuffing 32 and multiple microporous aeration discs 33.
Aerobic tank 31 and the bottom in denitrification pond 21 are interconnected by pipeline or wall trepanning mode.In aerobic tank 31
Interior, dissolved oxygen content should control as 2~4mg/L, and in the present embodiment, dissolved oxygen content control is 3mg/L, mixed liquor residence time
Concentration for 7h, activated sludge is 6500mg/L, and sludge loading is 0.14kgCOD/ (gMLSSd)
Floating stuffing 32 is filled in aerobic tank 31, for promote active bacteria, nutrients etc. 32 surface of floating stuffing/
Inside forms biomembrane, and in the present embodiment, the packed density of floating stuffing 32 is 30% (V/V), i.e. packing volume and aerobic tank
The ratio of 31 volumes；32 shape of floating stuffing is ball-type, and material is polypropylene modified material, diameter 8cm, density 0.94-
0.98。
Each microporous aeration disc 33 is arranged at 31 bottom of pond of aerobic tank, and is connected by air inlet pipe, is adopted in the present embodiment
The specification of microporous aeration disc 33 is DN300 or DN350, center spacing 800mm or so.
Dynamic Membrane processing unit 40 includes Dynamic Membrane processing pond 41, membrane module 42 and multiple strong aeration tubes 43.
Dynamic Membrane processing pond 41 is connected with the top of aerobic tank 31, specially：31 top of aerobic tank is equipped with effluent weir
It is discharged for collecting, effluent weir makes the water outlet of aerobic tank 31 flow into from top to bottom dynamic close to pool wall by pipeline or wall trepanning
State film process pond 41.
Membrane module 42 is arranged in Dynamic Membrane processing pond 41, and membrane module 42 is MBR membrane modules, filter therein in the present embodiment
Film uses PTFE flat micro-filtrations, membrane aperture 0.02um, membrane flux >=500L/ (m under pure water medium2·h)；Under wastewater media
Membrane flux is 40L/ (m2·h).As shown in figure 4, membrane module 42 is installed by lifting lug 42a to Dynamic Membrane processing pond 41, multilayer
PTFE flat micro-filtrations 42b is fixed in installing frame 42c, and outlet pipe 42d is provided on PTFE flat micro-filtrations 42b.
Strong aeration tube 43 is mounted below membrane module 42, using boring aeration pipe 43 in the present embodiment.Aeration intensity,
Usually according to the ratio of air inflow and inflow, ratio is 20~30 in the present embodiment:1, per 12~15L/min of piece element
(membrane area 1.5m2/ piece).
Above-mentioned denitrification pond 21, aerobic tank 31, Dynamic Membrane processing pond 41 volumetric ratio be 1:3~8:2.
As shown in Figure 1, clear water portion 50 includes clear water reserviors 51, water outlet pump 52, backwash water pump 53 and sterilizer 54.Clear water
Pond 51 is connected with the water outlet of membrane module 42.Water outlet pump 52 is connected to outlet and the clear water reserviors 51 of 42 outlet pipe 42d of membrane module
Water inlet between, for purified clear water to be pumped to out of membrane module 42 in clear water reserviors 51.Backwash water pump 53 is connected to
Positioned at the outlet of 42 outlet pipe 42d of backwash outlets and membrane module of clear water reserviors 51, (at this moment, which enters as what backwash water entered
Mouthful) between.Sterilizer 54 is arranged on the water delivery pipe road of clear water reserviors 51, and in the present embodiment, the sterilizer 54 used is dioxy
Change chlorine generator 54.
In Dynamic Membrane processing unit 40, membrane module 42 needs regular backwash, at this moment can open backwash water pump 53, by clear water
Water purification in pond 51 is recycled to by the outlet of outlet pipe 42d in membrane module 42 carries out back flush, backwash frequency from inside to outside
For：8min, backwash 2min are often run, backwash mode is cleaned for air water.Here air water scouring refers to：Membrane module 42 is entering clearly
When washing the period, stop production water, being aerated the substance for generating and stirring and being accumulated to film surface by bottom perforated aeration tube 43 cleans,
The bubble of rising will produce rubbing action in film surface, and the backwash of membrane module 42 is cooperateed with to carry out profound cleaning to film.
The present invention operation principle be：In denitrification pond 21, the catalysis of ferrous substrate biological coupling filler 22 forms primary battery
Reaction release [H] or H2, hydrogen autotrophic type denitrifying bacteria is reduced into nitrogen using hydrogen as the energy, by nitrate nitrogen, realizes
Denitrogenation.In aerobic tank 31, the aerobic microbiological on 32 surface of floating stuffing and internal facultative microbe pass through biodegradable
Organic matter is resolved into CO by effect2And H2O realizes the removal of organic pollution.In Dynamic Membrane processing pond 41, in suction function
Under, activated sludge or particulate matter in mixed liquor are trapped in film surface by PTFE flat micro-filtrations 42b, and water passes through PTFE tablets
The micropore of microfiltration membranes 42b is pumped to clear water reserviors 51, activated sludge or particulate matter by water outlet pump 52 in PTFE flat micro-filtration 42b tables
Face is constantly accumulated, and cake layer is formed, and filtering layer replaces PTFE flat micro-filtrations 42b to become film medium, forms dynamic membrane filtering.
Based on the above structure and operation principle, sewage disposal is carried out using the sewage disposal system 10 that the present embodiment is provided
Specific method be：
Step 1：Sewage is introduced into denitrification pond 21 by intake pump 25, added into denitrification pond 21 denitrifying bacteria/
Nitrobacteria or activated sludge, and add nutriment culture, sewage mixing homogeneous is made using impeller 24 and given birth to ferrous substrate
Object couples filler 22 and uniformly contacts, and the catalysis of ferrous substrate biological coupling filler 22 forms galvanic interaction release release [H] or H2, hydrogen
Autotrophic type denitrifying bacteria is reduced into nitrogen using hydrogen as the energy, by nitrate nitrogen, realizes denitrogenation；Meanwhile denitrification pond
Mixed liquor in 21, which is flow automatically in bottom of pond by way of liquid level difference, flows into aerobic tank 31.
In this step, pretreatment should be first passed through by introducing the sewage in denitrification pond 21, remove visible large particle in sewage
Matter is intercepted for example, by using the pretreatment facility such as coarse rack-fine fack, removes hair, solid refuse, the stone etc. in sewage
Deng.After pretreatment, then with intake pump 25 by sewage lifting to denitrification pond 21.
Step 2：Aerobic microbiological strain or activated sludge are added into aerobic tank 31, and add nutriment culture,
The surface of floating stuffing 32 or internal formation biomembrane, while aeration aerating is carried out to mixed liquor using microporous aeration disc 33；It is outstanding
Organic matter is resolved into CO by the aerobic microbiological and internal facultative microbe on floating 32 surface of filler by biodegradable effect2
And H2O realizes the removal of organic pollution；Mixed liquor in aerobic tank 31 is by way of gravity flow from the thermally coupled flow film of top
Manage pond 41.
Step 3：Under the action of negative pressure, activated sludge and particulate matter are by membrane module for mixed liquor in Dynamic Membrane processing pond 41
42 are trapped in surface, activated sludge and particulate matter constantly accumulates on the surfaces PTFE flat micro-filtration 42b, forms cake layer,
Cake layer, which is attached to the surfaces PTFE flat micro-filtration 42b in membrane module 42, becomes film medium, forms dynamic membrane filtering, and water purification is saturating
It crosses PTFE flat micro-filtrations 42b and is admitted to clear water reserviors 51 from the water outlet of membrane module 42；Meanwhile the portion in Dynamic Membrane processing pond 41
Divide mixed liquor to be then directly back to by conveyance conduit in denitrification pond 21 and continues denitrogenation.
Step 4：Using chlorine dioxide generator 54 to being discharged from water delivery pipe road after water outlet progress sterilizing, part is net
Water to membrane module 42 for carrying out regular backwash.In backwash, water outlet pump 52 is closed, and backwash water pump 53 is opened, and water purification is pumped into
Membrane module 42 is aerated in conjunction with bottom perforated aeration tube 43, and cake layer or retention substance are flushed out film surface, then carried out next
The filtering in period.In addition, in normally purification work, water outlet pump 52 is opened, and backwash water pump 53 is closed, and can be controlled by valve real
The now switching of water inlet and backwash.Then the water meeting overflow of flushing is again introduced by intake pump 25 in denitrification pond 21 to pump house.
This system can be used PLC Automatic Controls and realize the above sewage water treatment method.
Through the above method treated sewage, COD removal rates can reach 95.13%, and ammonia nitrogen removal frank can reach
92.22%, total tp removal rate can reach 94.37%, and nitrogen removal rate can reach 89.43%.
Above example is only the illustration done to technical solution of the present invention.Sewage disposal according to the present invention
System and method are not merely defined in described structure in the embodiment above, but with model defined by claim
Subject to enclosing.Any modify or supplement that those skilled in the art of the invention are done on the basis of the embodiment equivalent is replaced
It changes, all in the claim range claimed of the present invention.
Claims (10)
1. a kind of sewage disposal system, which is characterized in that have：
Denitrification portion, including：Denitrification pond is filled in the ferrous substrate biological coupling filler that denitrogenation is used in the denitrification pond,
With the impeller in denitrification pond；
Aerobic portion, including：The aerobic tank being connected with denitrification bottom of pond portion is filled in the aerobic tank for promoting to give birth to
The floating stuffing that object film is formed, and multiple microporous aeration discs in the aerobic tank bottom of pond are set；
Dynamic Membrane processing unit, including：The Dynamic Membrane processing pond being connected at the top of the aerobic tank, and be arranged in the dynamic
Membrane module in film process pond, containing microfiltration membranes；And
Clear water portion, including：The water delivery pipe in the clear water reserviors is arranged in the clear water reserviors being connected with the water outlet of the membrane module
Sterilizer on road.
2. sewage disposal system according to claim 1, it is characterised in that：
Wherein, in the denitrification pond, the loading density of the ferrous substrate biological coupling filler is 30~50% (V/V).
3. sewage disposal system according to claim 1, it is characterised in that：
Wherein, the denitrification portion further includes the multiple fillers installation grid beam being erected in the denitrification pond, the iron-based
Matter biological coupling uniform filling is filled in the multiple filler installation grid beam and forms packing area,
The spacing of adjacent filler installation grid beam is 30~50cm, the bottom of the packing area to denitrification pond bottom of pond
Distance be 40~60cm.
4. sewage disposal system according to claim 1, it is characterised in that：
Wherein, in the aerobic tank, the loading density of floating stuffing is 30% (V/V).
5. sewage disposal system according to claim 1, it is characterised in that：
Wherein, in the denitrification pond and the aerobic tank, the concentration of activated sludge is 6500mg/L, and sludge loading is
0.14kgCOD/(kgMLSS·d)。
6. sewage disposal system according to claim 1, it is characterised in that：
Wherein, in the denitrification pond, dissolved oxygen content should control as 0.5~1.5mg/L；In the aerobic tank, dissolving
Oxygen content should control as 2~4mg/L.
7. sewage disposal system according to claim 1, it is characterised in that：
Wherein, the filter membrane in the membrane module uses PTFE flat micro-filtrations, membrane aperture 0.02um, membrane flux under pure water medium
≥500L/(m2·h)；Membrane flux is 40L/ (m under wastewater media2H),
The Dynamic Membrane processing unit further includes the multiple strong aeration tubes being arranged in the Dynamic Membrane processing pond bottom of pond.
8. sewage disposal system according to claim 1, it is characterised in that：
Wherein, the denitrification pond, the aerobic tank, the Dynamic Membrane processing pond volumetric ratio be 1:3~8:2,
The sterilizer is chlorine dioxide generator.
9. sewage disposal system according to claim 1, it is characterised in that：
Wherein, the clear water portion further includes：The water outlet being connected between the water outlet of the membrane module and the water inlet of clear water reserviors
It pumps, and the backwash water pump being connected between the backwash outlets of the clear water reserviors and the water outlet of the membrane module.
10. a kind of sewage water treatment method carries out sewage using the sewage disposal system described in any one of claim 1 to 9
Processing, which is characterized in that include the following steps：
Step 1：Sewage is introduced into denitrification pond, denitrifying bacteria/nitrobacteria or activated sludge are added into denitrification pond, and
Nutriment culture is added, sewage mixing homogeneous is made using impeller and is contacted with ferrous substrate biological coupling uniform filling, iron-based
Matter biological coupling filler is catalyzed to form galvanic interaction release hydrogen, hydrogen autotrophic type denitrifying bacteria using hydrogen as the energy,
Nitrate nitrogen is reduced into nitrogen, realizes denitrogenation；Meanwhile the sewage mixed liquor in the denitrification pond passes through liquid level difference in bottom of pond
Mode flow automatically flow into aerobic tank；
Step 2：Aerobic microbiological strain or activated sludge are added into the aerobic tank, and adds nutriment culture, outstanding
The surface of floating filler or internal formation biomembrane, while aeration aerating is carried out to mixed liquor using microporous aeration disc；The suspension
Organic matter is resolved into CO by the aerobic microbiological on filler surface and internal facultative microbe by biodegradable effect2With
H2O realizes the removal of organic pollution；Mixed liquor in the aerobic tank is by way of gravity flow from the thermally coupled flow film of top
Manage pond；
Step 3：Under the action of negative pressure, activated sludge and particulate matter are cut mixed liquor in the Dynamic Membrane processing pond by membrane module
It stays in surface, activated sludge and particulate matter constantly to accumulate in film surface, forms cake layer, cake layer is attached to the film group
Micro-filtration film surface in part becomes film medium, forms dynamic membrane filtering, and water purification penetrates the microfiltration membranes going out from the membrane module
The mouth of a river is admitted to clear water reserviors；Meanwhile the part mixed liquor in Dynamic Membrane processing pond 41 is directly back to anti-nitre by conveyance conduit
Change in pond 21；
Step 4：Using sterilizer to being discharged from water delivery pipe road after water outlet progress sterilizing, partially purifying water is used for the film
Component carries out regular backwash.
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| CN201810299478.7A CN108455799A (en) | 2018-04-04 | 2018-04-04 | Sewage disposal system and method |
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|---|---|---|---|
| CN201810299478.7A CN108455799A (en) | 2018-04-04 | 2018-04-04 | Sewage disposal system and method |
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|---|---|---|---|---|
| CN109455889A (en) * | 2019-01-10 | 2019-03-12 | 天津凯英科技发展股份有限公司 | High-speed rail height consolidates sludge digestion dehydration liquid denitrification of autotrophic organism combination unit and regulation method |
| CN109851171A (en) * | 2019-02-26 | 2019-06-07 | 四川逸名环保科技有限公司 | A kind of tri- layers of auto-cleaning method of MBR |
| CN110543979A (en) * | 2019-08-19 | 2019-12-06 | 湖南九层台环境科技有限公司 | Prediction selection method for village farmer sewage lift pump |
| CN111573830A (en) * | 2019-02-18 | 2020-08-25 | 桂林理工大学 | Device and method for deep denitrification by coupling anaerobic ammonia oxidation and hydrogen autotrophic denitrification |
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