CN106957109A

CN106957109A - Have the level stream biomembrane reaction apparatus of sustained release basicity and carbon source function concurrently

Info

Publication number: CN106957109A
Application number: CN201710141032.7A
Authority: CN
Inventors: 王荣昌; 程霞; 王超颖; 李乐雪
Original assignee: Tongji University
Current assignee: Tongji University
Priority date: 2017-03-10
Filing date: 2017-03-10
Publication date: 2017-07-18
Anticipated expiration: 2037-03-10
Also published as: CN106957109B

Abstract

The present invention relates to the level stream biomembrane reaction apparatus for having sustained release basicity and carbon source function concurrently, the device includes the header tank being connected with cities and towns, country sewage source, the intake chamber being connected with header tank, the intake pump being arranged between header tank and intake chamber, the sustained release reaction member being connected with intake chamber, and the sustained release reaction member includes the reactor support frame being connected with intake chamber, sustained release basicity flat board and slow release carbon source flat board that from top to bottom alternating horizontal is laid in reactor support frame successively, the water tank for being arranged on reactor support frame bottom.Compared with prior art, apparatus of the present invention can alternately be sustained basicity and carbon source, the shortcomings of overcoming nitrifying process basicity shortage, denitrification process carbon source shortage and dosage whard to control, compact overall structure, operation operation is simple, multistage nitration denitrification can be realized, the small sewage treatment plants such as rural area, cities and towns are can be applied to, with good application prospect.

Description

Have the level stream biomembrane reaction apparatus of sustained release basicity and carbon source function concurrently

Technical field

The invention belongs to sewage disposal technology and apparatus field, it is related to a kind of level stream biomembrane reaction apparatus, especially It is related to a kind of level stream biomembrane reaction apparatus for having sustained release basicity and carbon source function concurrently.

Background technology

Villages and small towns sewage yield is small, production source is scattered, water quality and quantity fluctuation is big, and dirty Organic substance in water and nitrogen and phosphorus content are high, right The Health and Living environment of the mankind brings great negative effect.Although traditional biological denitrification process activated sludge process handles energy Power is big, treatment effeciency is high, there is preferable denitrogenation dephosphorizing performance, but it is not appropriate for villages and small towns sewage disposal, and activated sludge process is logical Often need to carry out in two mutually isolated reactors, or cause in space or on the time alternately anoxic and aerobic environment Carried out in same reactor, floor space is big, construction cost is high, sludge is difficult.

Technology of biological membrane is a kind of long-term wide variety of sewage water treatment method.It is micro- when sewage flows through biofilm carrier Biology is attached to carrier surface first, then in the continuous growth and breeding in its surface, forms biomembrane.The surface of film due to air Contact and dissolved with more oxygen, form aerobic biologic membrane, with being continuously increased for biofilm thickness, the internal layer dissolved oxygen of film is gradually Reduce, easily form anaerobic layer.Microorganism makes pollutant be degraded using the organic matter in sewage as nutrients, while can be Aerobic layer carries out nitration reaction, carries out denitrification in anaerobic layer, reaches denitrification effect.

Traditional biofilm reactor is mostly single-stage reactor, its compact conformation, simple, but is unfavorable for various effects not The structure of same superior microorganism flora growth habitat, treatment efficiency is relatively low.Level stream biofilm reactor (HFBR) is a kind of The integral type sewage treatment reactor of organics removal and ammonia nitrogen, is that a kind of occupation of land is saved, the Novel sewage of economical and convenient handles work Skill equipment.In HFBR internal systems, sewage flows through each layer of carrier of reactor by self-gravity action.Reaction system has multilayer life Thing membrane carrier flat board, the equal growth film of every layer of flat board, increases the contact area of sewage and biomembrane, when adding hydraulic retention Between；Reactor does not need aerator, and each layer of biomembrane can carry out reoxygenation process with air contact.

In biological treatment denitrogenation, often need to consume in nitrifying process needs to disappear in a large amount of basicity, denitrification process A large amount of carbon sources are consumed, therefore basicity and carbon source in reactor can be caused inadequate, it is necessary to additionally debug basicity, add carbon source.At present, grind Study carefully conventional liquid carbon source including methanol, ethanol etc. for carbon effect preferably, but cost and operating cost is higher and injected volume is unsuitable Control；Solid-state carbon source is generally natural material, such as sawdust, straw, cotton, and its carbon source burst size is uncontrollable, easily causes two Secondary pollution；And then there is denitrogenation cost higher as carbon source in the polymer such as PHAs, PCL and PLA of artificial or Microbe synthesis Problem.

At present, level stream biofilm reactor and the biofilm reactor of slow release carbon source have occurred.

Such as, application publication number discloses a kind of high-efficiency low-power multi-layer level stream biology for 102432104A Chinese patent Film sewage water treatment method and equipment.It has the advantages that multipoint water feeding and floor space are small, and is not required to aerator, itself The different type growth of microorganism region such as aerobic zone and anaerobic zone is formed, steric requirements is taken full advantage of, to sewage load and dirt Water treatment efficiency has different degrees of raising.But its overall denitrogenation inefficient is, it is necessary to debug basicity, additional carbon, with Improve denitrification effect.

Separately, application publication number discloses a kind of sustained release carbon with advanced nitrogen function for 103043786A Chinese patent Source filter material filter pool device and technique.Its slow release carbon source filtrate raw material can use polycaprolactone (PCL), polyhydroxyalkanoate (PHAs), the material of the energy such as blend of PCL and PHAs and starch microbial degradation.Sewage can have simultaneously by this filter apparatus There is the function of removing TN, TP, SS.But then there is the problem of denitrogenation cost is higher in its slow-release carbon source material.

Above-mentioned two patents are technology of biological membrane processing sewage, realize Nitrogen/Phosphorus Removal.But the former needs extra tune Try basicity, add carbon source, and the bad control of dosage；The latter can supplement carbon source deficiency during denitrification using slow release carbon source raw material Problem, but it can not be sustained the basicity in nitrifying process, and slow release carbon source cost of material is higher, and its filtrate is easily blocked, relatively In the former complex operation, it is necessary to increase the processes such as backwash.Processing to villages and small towns sewage also has certain limitation.

The content of the invention

The purpose of the present invention is exactly the defect in order to overcome above-mentioned prior art presence and providing one kind can efficiently remove The pollutant such as Organic substance in water and nitrogen phosphorus, also has stronger place to go effect to particulate matter, and floor space is small, it is adaptable to villages and small towns sewage The level stream biomembrane reaction apparatus for having sustained release basicity and carbon source function concurrently of processing.

The purpose of the present invention can be achieved through the following technical solutions：

Have the level stream biomembrane reaction apparatus of sustained release basicity and carbon source function concurrently, the device includes dirty with cities and towns, rural area Header tank that water source is connected, the intake chamber being connected with header tank, the intake pump being arranged between header tank and intake chamber, with The sustained release reaction member that intake chamber is connected, the sustained release reaction member include be connected with intake chamber reactor support frame, Sustained release basicity flat board and slow release carbon source flat board that from top to bottom alternating horizontal is laid in reactor support frame successively, it is arranged on The water tank of reactor support frame bottom.

The tack carrier laid in array, and institute are respectively equipped with described sustained release basicity flat board and slow release carbon source flat board The baffle plate for controlling liquid level is further respectively had on the sustained release basicity flat board and slow release carbon source flat board stated.

The liquid level depth on liquid level depth ＞ sustained release basicity flat boards on described slow release carbon source flat board.

Flowmeter is provided between described intake chamber and reactor support frame.

Basicity sustained release agent uniformly is coated with described sustained release basicity flat board, the basicity sustained release agent is mineral calciferous Matter.

Uniformly compounded carbonses sustained release agent is coated with described slow release carbon source flat board.

Described compounded carbonses sustained release agent is combined by gel and the carbon source biofilm carrier being entrained in gel Form, described gel and the mass ratio of carbon source biofilm carrier is 50:1-2.

As preferred technical scheme, described gel is cement.

As preferred technical scheme, described carbon source biofilm carrier includes polyhydroxyalkanoate, polycaprolactone, gathered One or more in lactic acid, starch, latex powder or polyvinyl alcohol.

Described carbon source biofilm carrier is mixed by starch, polyvinyl alcohol and latex powder, wherein, starch and polyethylene The mass ratio of alcohol is 1:9, the mass ratio of starch and latex powder is 2-4:3-5.

Described device is concretely comprised the following steps using preceding first inoculation of activated-sludge：The 40-50L suspended sediment concentrations are taken to be 3000-5000mg/L nitrifying sludge is inoculated with, and inoculation time is 12-15 hours, makes nitrifying sludge uniform fold in sustained release On basicity flat board and slow release carbon source flat board.

In apparatus of the present invention, sustained release basicity flat board and slow release carbon source flat board in sustained release reaction member are alternately laid, and are overcome The shortcomings of nitrifying process basicity lacks, denitrification process carbon source lacks and dosage is whard to control, basicity flat layer is being sustained, it is micro- Biology is mainly based on nitrobacteria；In slow release carbon source flat layer, microorganism is mainly based on denitrifying bacterium；Meanwhile, pass through Set the water level on the baffle plate regulation liquid level of control liquid level, sustained release basicity flat board shallow, mainly realize nitrification function；Slow release carbon source is put down Water level on plate is deep, mainly realizes denitrification function, multistage nitration denitrification is realized with this.

In practical application, cities and towns, country sewage, which enter, is provided with grid in header tank, header tank, can tentatively it be filtered, The impurity and fiber of some big particle diameters are filtered out through mechanism；Sewage after coarse filtration is lifted in intake chamber through intake pump, is entered The controllable water and water velocity for entering sustained release reaction member of tank, flowmeter regulation enters the flow of sustained release reaction member. Reactor support frame is then entered by inlet valve, sewage gradually flows through alternating horizontal laying in reactor support frame Sustained release basicity flat board and slow release carbon source flat board, adjust the water level of each layer flat board by baffle plate, the water level on sustained release basicity flat board It is shallow, mainly realize nitrification function；Water level on slow release carbon source flat board is deep, mainly realizes denitrification function, multistage nitre is realized with this Change the biomembrane adhered on denitrification, sustained release basicity flat board and slow release carbon source flat board and absorb dirty Organic substance in water and nitrogen phosphorus etc., water Matter gradually improves；Last water outlet is flowed into water tank.

In the present invention, the sustained release agent of sustained release basicity can use mineral matter calciferous.The sustained release agent of slow release carbon source can be with Cement is gel, the polyhydroxyalkanoate (English abbreviation PHAs) for the artificial or Microbe synthesis that adulterates, polycaprolactone (English Abbreviation PCL) and the polymer such as PLA (English abbreviation PLA) or doping vario-property starch and polyvinyl alcohol (English abbreviation PVA) Compound etc. can as slow release carbon source material.

Or cement, redispersable latex powder (English abbreviation VAE) mixture are used for carrier material, modified starch and poly- second Enol compound is interior carbon dope source biofilm carrier made from carbon source.VAE emulsions make protective using a large amount of PVA, along with PVA The activity of itself is more with the application point of cement, and VAE is added in cement, one layer of irregular membrane structure can be formed, can effectively change Become the physical properties such as density, intensity, the voidage of carrier, the diffusion of carbon source starch will be hindered, and then reaches sustained release Effect.When VAE additions are less than 5%, with the increase of sustained release agent, stripping quantity is in reduction trend, suitable addition 3~ Between 5%.

When actually used, multistage nitration denitrification can be realized by baffle controls water level.

Compared with prior art, the invention has the characteristics that：

1) basicity consumed in basicity and carbon source, supplement biofilm reactor nitrifying process, denitrification process can be sustained to disappear The carbon source of consumption, it is to avoid the phenomenon that nitric efficiency is reduced because of carbon source deficiency in denitrification process；

2) multiple-layer horizontal stream biofilm reactor is built, sustained release basicity flat board and slow release carbon source flat board are alternately laid, passed through The water level that baffle plate is adjusted on the water level of each layer flat board, sustained release basicity flat board is shallow, mainly realizes nitrification function；On slow release carbon source flat board Water level it is deep, mainly realize denitrification function, multistage nitration denitrification realized with this；

3) the level stream biomembrane reaction apparatus for possessing sustained release basicity and carbon source function is aerobic, anaerobic processes integral type Reactor, can remove the pollutant such as Organic substance in water and nitrogen phosphorus, also have stronger place to go effect to particulate matter, greatly save Floor space, it is adaptable to villages and small towns sewage disposal.

Brief description of the drawings

Fig. 1 is overall structure diagram of the present invention；

Fig. 2 is sustained the cross section structure schematic diagram of basicity flat board for the present invention；

Description of symbols in figure：

1-header tank, 2-intake pump, 3-intake chamber, 4-flowmeter, 5-reactor support frame, 6-baffle plate, 7- Tack carrier, 81-sustained release basicity flat board, 82-slow release carbon source flat board, 9-water tank.

Embodiment

The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.

Embodiment 1：

As shown in figure 1, the present embodiment has the level stream biomembrane reaction apparatus of sustained release basicity and carbon source function, the device concurrently Including the header tank 1 being connected with cities and towns, country sewage source, the intake chamber 3 being connected with header tank 1, be arranged on header tank 1 with Intake pump 2 between intake chamber 3, the sustained release reaction member being connected with intake chamber 3, the sustained release reaction member include and intake chamber The 3 reactor support frames 5 being connected, from top to bottom alternating horizontal is laid in the sustained release alkali in reactor support frame 5 successively Degree flat board 81 and slow release carbon source flat board 82, the water tank 9 for being arranged on the bottom of reactor support frame 5.

Carried as shown in Fig. 2 being respectively equipped with the tack laid in array on sustained release basicity flat board 81 and slow release carbon source flat board 82 Body 7, and it is sustained the baffle plate 6 being further respectively had on basicity flat board 81 and slow release carbon source flat board 82 for controlling liquid level.

Wherein, flowmeter 4 is provided between intake chamber 3 and reactor support frame 5.Uniformly coated on sustained release basicity flat board 81 There is basicity sustained release agent, the basicity sustained release agent is mineral matter calciferous.Uniformly composite carbon is coated with slow release carbon source flat board 82 Source sustained release agent, the compounded carbonses sustained release agent be combined by gel and the carbon source biofilm carrier being entrained in gel and Into gel is 50 with the mass ratio of carbon source biofilm carrier:1.Gel is cement；Carbon source biofilm carrier is by carbon source thing Matter starch, polyvinyl alcohol and latex powder are mixed.Carbon source material starch is 1 with polyvinyl alcohol mass ratio:9, carbon source material with Latex powder mass ratio is 2:5.

The present embodiment device is concretely comprised the following steps using preceding first inoculation of activated-sludge：The 40L suspended sediment concentrations are taken to be 5000mg/L nitrifying sludge is inoculated with, and inoculation time is 12 hours, makes nitrifying sludge uniform fold in sustained release basicity flat board 81 and slow release carbon source flat board 82 on.

In the present embodiment device, multistage nitration denitrification can be realized by the controlling water level of baffle plate 6.When actually used, city Town, country sewage, which enter, is provided with grid in header tank 1, header tank 1, can tentatively be filtered, the impurity and fibre of some big particle diameters Dimension is filtered out through mechanism；Sewage after coarse filtration is lifted in intake chamber 3 through intake pump 2, and intake chamber 3 is controllable to enter sustained release The water and water velocity of reaction member, the regulation of flowmeter 4 enter the flow of sustained release reaction member.Then entered by inlet valve Enter reactor support frame 5, sewage gradually flows through the sustained release basicity flat board 81 of alternating horizontal laying in reactor support frame 5 And slow release carbon source flat board 82, the water level of each layer flat board is adjusted by baffle plate 6, multistage nitration denitrification is realized, is sustained basicity flat board 81 and slow release carbon source flat board 82 on the biomembrane that adheres to absorb dirty Organic substance in water and nitrogen phosphorus etc., water quality gradually improves；Finally go out Water is flowed into water tank 9.

Embodiment 2：

In the present embodiment, in the compounded carbonses sustained release agent uniformly coated on slow release carbon source flat board 82, gel is given birth to carbon source The mass ratio of thing membrane carrier is 50:2.Gel is cement, carbon source biofilm carrier by carbon source material starch, polyvinyl alcohol with Latex powder is mixed.The mass ratio of carbon source material starch and polyvinyl alcohol is 1:9, the mass ratio of carbon source material and latex powder is 3:4.Add latex powder, one layer of irregular membrane structure formed in cement, can effectively change the density of carrier, intensity, The physical properties such as voidage.

The present embodiment device is concretely comprised the following steps using preceding first inoculation of activated-sludge：The 50L suspended sediment concentrations are taken to be 3000mg/L nitrifying sludge is inoculated with, and inoculation time is 15 hours, makes nitrifying sludge uniform fold in sustained release basicity flat board 81 and slow release carbon source flat board 82 on.

Remaining be the same as Example 1.

Embodiment 3：

In the present embodiment, in the compounded carbonses sustained release agent uniformly coated on slow release carbon source flat board 82, gel is given birth to carbon source The mass ratio of thing membrane carrier is 50:1.5.Gel is cement, and carbon source biofilm carrier is by carbon source material starch, polyvinyl alcohol Mixed with modified material latex powder.Carbon source material starch is 1 with polyvinyl alcohol mass ratio:9, carbon source material and modified material Mass ratio is 2:4.

The present embodiment device is concretely comprised the following steps using preceding first inoculation of activated-sludge：The 45L suspended sediment concentrations are taken to be 4000mg/L nitrifying sludge is inoculated with, and inoculation time is 13 hours, makes nitrifying sludge uniform fold in sustained release basicity flat board 81 and slow release carbon source flat board 82 on.

Remaining be the same as Example 1.

Embodiment 4：

In the present embodiment, in the compounded carbonses sustained release agent uniformly coated on slow release carbon source flat board 82, gel is given birth to carbon source The mass ratio of thing membrane carrier is 50:2.Gel is cement, carbon source biofilm carrier by carbon source material starch, polyvinyl alcohol with Modified material latex powder is mixed.Carbon source material starch is 1 with polyvinyl alcohol mass ratio:9, carbon source material and modified material matter Amount is than being 3:5.

Remaining be the same as Example 1.

Embodiment 5：

In the present embodiment, in the compounded carbonses sustained release agent uniformly coated on slow release carbon source flat board 82, gel is given birth to carbon source The mass ratio of thing membrane carrier is 50:2.Gel is cement, and carbon source biofilm carrier is polyhydroxyalkanoate.

Remaining be the same as Example 1.

Embodiment 6：

In the present embodiment, in the compounded carbonses sustained release agent uniformly coated on slow release carbon source flat board 82, gel is given birth to carbon source The mass ratio of thing membrane carrier is 50:2.Gel is cement, and carbon source biofilm carrier is pressed for polycaprolactone with PLA, starch Mass ratio is 1:1:2 mix.

Remaining be the same as Example 1.

The above-mentioned description to embodiment is understood that for ease of those skilled in the art and using invention. Person skilled in the art obviously can easily make various modifications to these embodiments, and described herein general Principle is applied in other embodiment without passing through performing creative labour.Therefore, the invention is not restricted to above-described embodiment, ability Field technique personnel are according to the announcement of the present invention, and not departing from improvement and modification that scope made all should be the present invention's Within protection domain.

Claims

1. have the level stream biomembrane reaction apparatus of sustained release basicity and carbon source function concurrently, it is characterised in that the device includes and city Header tank that town, country sewage source are connected, the intake chamber being connected with header tank, it is arranged between header tank and intake chamber Intake pump, the sustained release reaction member being connected with intake chamber, the sustained release reaction member include the reactor being connected with intake chamber Support frame, sustained release basicity flat board and slow release carbon source that from top to bottom alternating horizontal is laid in reactor support frame successively are put down Plate, the water tank for being arranged on reactor support frame bottom.

2. the level stream biomembrane reaction apparatus according to claim 1 for having sustained release basicity and carbon source function concurrently, its feature It is that the tack carrier laid in array is respectively equipped with described sustained release basicity flat board and slow release carbon source flat board, and it is described Sustained release basicity flat board and slow release carbon source flat board on further respectively have baffle plate for controlling liquid level.

3. the level stream biomembrane reaction apparatus according to claim 2 for having sustained release basicity and carbon source function concurrently, its feature It is, the liquid level depth on liquid level depth ＞ sustained release basicity flat boards on described slow release carbon source flat board.

4. the level stream biomembrane reaction apparatus according to claim 3 for having sustained release basicity and carbon source function concurrently, its feature It is uniformly to be coated with basicity sustained release agent on described sustained release basicity flat board, the basicity sustained release agent is mineral matter calciferous.

5. the level stream biomembrane reaction apparatus according to claim 3 for having sustained release basicity and carbon source function concurrently, its feature It is uniformly to be coated with compounded carbonses sustained release agent on described slow release carbon source flat board.

6. the level stream biomembrane reaction apparatus according to claim 5 for having sustained release basicity and carbon source function concurrently, its feature Be, described compounded carbonses sustained release agent be combined by gel and the carbon source biofilm carrier being entrained in gel and Into described gel and the mass ratio of carbon source biofilm carrier is 50:1-2.

7. the level stream biomembrane reaction apparatus according to claim 6 for having sustained release basicity and carbon source function concurrently, its feature It is that described carbon source biofilm carrier includes polyhydroxyalkanoate, polycaprolactone, PLA, starch, latex powder or poly- second One or more in enol.

8. the level stream biomembrane reaction apparatus according to claim 7 for having sustained release basicity and carbon source function concurrently, its feature It is that described carbon source biofilm carrier is mixed by starch, polyvinyl alcohol and latex powder, wherein, starch and polyvinyl alcohol Mass ratio be 1:9, the mass ratio of starch and latex powder is 2-4:3-5.

9. the level stream biomembrane reaction dress for having sustained release basicity and carbon source function concurrently according to any one of claim 1 to 8 Put, it is characterised in that described device is concretely comprised the following steps using preceding first inoculation of activated-sludge：Take 40-50L suspended solids dense Spend and be inoculated with for 3000-5000mg/L nitrifying sludge, inoculation time is 12-15 hours, nitrifying sludge uniform fold is existed It is sustained on basicity flat board and slow release carbon source flat board.