CN210393886U

CN210393886U - Spherical MBBR filler structure

Info

Publication number: CN210393886U
Application number: CN201920727138.XU
Authority: CN
Inventors: 丁晔; 冯辉; 苏志龙; 秦萍萍; 姚晓然; 王娜; 王锐; 李晓鹏
Original assignee: Design Institute Of Tj Environment Protection Technical Development Center; Tj Environmental Protection Technical Development Center
Current assignee: Tianjin Environmental Protection Technology Development Center Design Institute Co ltd; Tianjin Institute Of Ecological And Environmental Sciences; Tj Environmental Protection Technical Development Center
Priority date: 2019-05-21
Filing date: 2019-05-21
Publication date: 2020-04-24
Anticipated expiration: 2029-05-21

Abstract

The utility model relates to a spherical MBBR filler structure, characterized by: the novel biological membrane biological adsorption device comprises a spherical shell, wherein the shell is of an integral structure formed by buckling an upper semicircular shell and a lower semicircular shell, the surface of the spherical shell is hollowed, the hollowed shape is triangular, each side of the triangle is connected with a framework through a cross-shaped or a m-shaped external connection framework to form a web shape, gaps among the frameworks extend towards the inside of the shell to form an inner wall, the inner surface and the outer surface of the inner wall are provided with biological membrane adhesion layers, and sponge block fillers are filled in the spherical shell. Has the advantages that: compared with the prior art, the utility model discloses have efficient decarbonization ability, superior nitration effect, stable play water quality of water, simple and direct operation management and lower operation energy consumption: the microbial sludge on the filler is long in age, has more biological phases and is stabilized, and meanwhile, the microorganisms are oxidized and decomposed by themselves, so that the system sludge is less in production amount, and the sludge treatment cost is correspondingly reduced.

Description

Spherical MBBR filler structure

Technical Field

The utility model belongs to the technical field of waste water and sewage biological treatment, especially, relate to a spherical MBBR filler structure.

Background

The MBBR filler is a microbial carrier applied to an MBBR process and mainly provides an environment suitable for growth of microorganisms. The MBBR filler is a novel bioactive carrier, adopts a scientific formula, is formed by fusing a plurality of trace elements which are beneficial to the rapid attachment and growth of microorganisms in a high polymer material according to different sewage properties and modifying and constructing through a special process, and has the advantages of large specific surface area, good hydrophilicity, high bioactivity, rapid film formation, good treatment effect, long service life and the like. The core of the MBBR technology is a biological carrier and an operation control technology; the biological carrier is a product which is closely combined with the biology in materials; biological carriers are the dominant biological selector, especially in difficult-to-degrade wastewater. Patent document No. CN208632202U discloses an MBBR filler with an equidistant vortex line structure, which is characterized by comprising an outer cylinder and a vortex partition plate arranged in the outer cylinder, wherein the cross section of the vortex partition plate is a vortex line. Patent document No. CN206901847U discloses a novel MBBR packing structure, the main body of which is a packing ring, and the novel MBBR packing structure is characterized in that: the packing ring is in a ring shape, a plurality of polygonal packing holes are formed in the packing ring, four fan blade-shaped packing fans are uniformly arranged outside the packing ring, and a plurality of polygonal packing holes are also formed in the packing fans. The purpose of the prior art is to increase the contact area of the filler and the sewage, increase the attachment amount of organisms, prevent the formation of a semi-closed space on a space structure and increase the mass transfer efficiency of the surface of the filler. However, the prior art cannot simultaneously consider the characteristics of easy film formation and easy film release in the practical application process, and does not have high-efficiency decarburization capability and nitrification effect. A plurality of fillers developed in China are used for treating various sewage, but a series of problems of slow biofilm formation, less attached biomass, low biological nitrogen and phosphorus removal efficiency and the like generally exist.

The technical field of biological treatment of wastewater and sewage needs to develop a suspended biological filler which has low price, long service life, large specific surface area, easy film formation, high hydrophilic performance and high biological affinity.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the not enough of above-mentioned technique, and provide a spherical MBBR filler structure, possess more excellent nitrogen and phosphorus removal function, specific surface is big, easily hang the membrane, easily deciduate, hydrophilic properties and biological affinity are high, can obviously promote sewage treatment efficiency.

The utility model discloses a realize above-mentioned purpose, adopt following technical scheme: the utility model provides a spherical MBBR filler structure which characterized by: the novel biological membrane biological adsorption device comprises a spherical shell, wherein the shell is of an integral structure formed by buckling an upper semicircular shell and a lower semicircular shell, the surface of the spherical shell is hollowed, the hollowed shape is triangular, each side of the triangle is connected with a framework through a cross-shaped or a m-shaped external connection framework to form a web shape, gaps among the frameworks extend towards the inside of the shell to form an inner wall, the inner surface and the outer surface of the inner wall are provided with biological membrane adhesion layers, and sponge block fillers are filled in the spherical shell.

The buckling mode of the upper semicircular shell and the lower semicircular shell adopts flange connection, buckle connection or threaded connection.

The spherical shell is made of modified PP plastic, the wall thickness of the spherical shell is 5-10mm, the outer diameter of the spherical shell is 30-100mm, and the sponge block filler is made of modified polyurethane sponge.

Has the advantages that: compared with the prior art, the utility model discloses efficient decarbonization ability has: the high-concentration biological flora can obtain strong COD degradation capability, and the volume load of the COD reaches 6kgCOD/m³D; meanwhile, the biological flora type on the carrier is rich, so that the degradation performance of the refractory organic matters is improved, and the effluent quality of the system is better; superior nitrification effect: nitrifying bacteria with longer generation time are preferentially attached to the carrier, so that the nitrification is not influenced by the retention time of suspended growing solids, and the concentration of the nitrifying bacteria is high, so that the nitrification and denitrification capability is remarkable, and the removal rate of ammonia nitrogen can reach more than 98%; stable effluent quality: the biomass with high concentration and the characteristic of adhesion growth enable the reaction tank to keep higher biological concentration all the time, the fluctuation of the quality of the incoming water can be rapidly decomposed, and the stability of the quality of the outgoing water is ensured; simple operation management: the biomembrane technology has no problems of sludge expansion, sludge floating, sludge loss and the like of the traditional activated sludge method, so that the frequent monitoring of the sludge condition of the reaction tank and the change of operation parameters are not needed, and the daily operation management is simpler; low energy consumption for operation: the introduction of the filler can improve the utilization rate of oxygen by 3-5%, so that the oxygenation energy consumption is reduced; lower floor space: under the condition of obtaining the same treatment capacity and treatment effect, the increase of the filler can reduce the volume of a structure and the occupied area by 1-3 times; less excess sludge yield: the microbial sludge on the filler is long in age, has more biological phases and is stabilized, and meanwhile, the microorganisms are oxidized and decomposed by themselves, so that the system sludge is less in production amount, and the sludge treatment cost is correspondingly reduced.

Drawings

Fig. 1 is a schematic view of the external structure of the present invention;

FIG. 2 is a schematic view of the upper hemispherical shell structure;

FIG. 3 is a schematic view of the lower hemisphere shell structure;

FIG. 4 is an enlarged view of the structure with the modified sponge block filler in the inner layer.

In the figure: 1. the hollow-out biological adhering wall comprises a hollow-out part 2, a biological adhering wall part 3, an inner surface part 4, an outer surface part 5, an external connecting framework part 6, a gap between frameworks part 7, an upper semicircular shell part 8, a lower semicircular shell part 8 and a sponge block filling part 9.

Detailed Description

The following detailed description of the preferred embodiments is provided for the purpose of illustrating the invention.

Example 1

Referring to the attached drawings in detail, the embodiment provides a spherical MBBR packing structure, which comprises a spherical shell, wherein the shell is buckled into an integral structure by upper and lower

semicircular shells

7 and 8, the surface of the spherical shell is hollowed out 1, the hollowed-out shape is triangular, each side of the triangle is enclosed into a mesh shape by a cross-shaped or m-shaped external connecting framework 5, a gap 6 between the frameworks extends towards the inside of the shell to form an inner wall, a biomembrane attachment layer 2 is arranged on the inner surface 3 and the outer surface 4 of the inner wall, and a sponge block packing 9 is filled in the spherical shell. The buckling mode of the upper semicircular shell and the lower semicircular shell adopts flange connection, buckle connection or threaded connection. This embodiment uses a threaded connection. The spherical shell is made of modified PP plastic, the wall thickness is 5-10mm, the outer diameter of the shell is 30-100mm, and a special injection mold is adopted for one-time injection molding; the sponge block filler is modified polyurethane sponge.

The surface of the spherical shell of the embodiment is modified by biological enzyme, so that anoxic and aerobic functional zones can be artificially manufactured.

In the embodiment, the ball-shaped shell and the sponge block filler are respectively added with chopped carbon fibers, and the weight of the chopped carbon fibers is 0-20 parts by mass.

In the embodiment, the spherical shell and the sponge block filler are respectively adsorbed with powdered activated carbon through modification treatment, and the weight of the powdered activated carbon is 0-50% by mass.

In the embodiment, 1-10 mg/kg of soluble rare earth compound and mineral elements are added into the spherical shell and the sponge block filler respectively, wherein the mineral elements comprise silicon, aluminum, manganese or iron. The soluble rare earth compound is a commercial compound supplied in the market.

The surface of the material of the spherical shell is rough and has a microporous structure, and the density, the precipitation speed, the charged load and the conductivity can be adjusted according to the requirements of application scenes.

Example 2

Take a treatment project of industrial wastewater with a certain high concentration and difficult degradation as an example

Use the utility model provides a MBBR filler structure, the handling capacity is 1000m³/d。

The used filler combination mode is that the inner layer sponge block filler (modified polyurethane) and the outer layer shell filler (modified PP plastic) are combined and used, the density of the filler is more than 1, and the filler sinks to the bottom of the biochemical tank;

the combined filler is deposited at the bottom of the biological tank in the application process, so that a biological film attached to the filler is mostly in an anaerobic state, and the organic matters which are difficult to degrade in the industrial wastewater are subjected to ring opening and chain scission to be decomposed into biochemical micromolecular organic matters;

the short carbon fiber component is added in the outer layer and the inner layer structure of the filler in the manufacturing process, 20-30% of powdered activated carbon is adsorbed, the specific surface area, the hydrophilicity and the biological affinity of the filler are increased, and the film forming capability of the filler is increased;

the outer layer and the inner layer of the filler structure are added with 6-10mg/kg of soluble rare earth compound of filler base material in the manufacturing process, so that the physical and chemical properties of the filler structure are optimized, the starting of the biofilm reactor can be effectively accelerated, and research results in the aspects of chemical industry, printing and dyeing, advanced treatment of fermentation wastewater and the like show that the starting time of microorganisms can be shortened by 30-35%;

the adding amount of the MBBR filler structure is controlled to be about 15 percent and is lower than that of a common biological filler, and the biological loading efficiency is extremely high;

the engineering application result shows that the combined biological filler is applied to the anaerobic unit, the removal rate of COD is in the range of 10-20%, and meanwhile, the biodegradability of the refractory industrial wastewater can be effectively improved.

Example 3

Take a certain landscape river treatment project as an example

Use the utility model provides a MBBR filler structure can improve the biological self-purification ability of river course water, increases river course water dissolved oxygen concentration and microbial content, reduces river course water organic matter and SS concentration, effectively prevents the black smelly of water. The specific implementation scheme is as follows:

the inner sponge block filler (modified polyurethane) is used independently, and the density of the filler is less than 1;

the filler floats on the surface of the water body in the river channel, and can intermittently contact with air through dynamic flow and disturbance of the water body, so that the dissolved oxygen concentration in the filler and in the water body is increased;

the short carbon fiber component is added in the polyurethane filler in the manufacturing process, 10% -20% of powdered activated carbon is adsorbed, the specific surface area, the hydrophilicity and the biological affinity of the filler are increased, and the film forming capability of the filler is increased;

3-5mg/kg of soluble rare earth compound of the filler base material is added in the manufacturing process of the polyurethane filler, so that the polyurethane filler has a certain growth stimulation effect on microorganisms, and can realize rapid film formation;

the filler is installed in landscape river channels by matching with facilities for preventing the filler from losing, and a screen with the thickness of about 10mm is generally adopted;

the filler is flexibly applied to the landscape river channel, can be randomly arranged in different river sections according to the water quality condition of the landscape river channel, is simple and convenient to install and low in cost;

practical engineering application results show that the application of the novel biological filler can improve the self-cleaning capacity of the river water body, the removal rate of organic matters in the water body reaches more than 80%, the dissolved oxygen concentration of the water body can be improved by 3-5%, and the black and odorous phenomenon of the water body can be effectively restrained.

Example 4

Take the improvement of a municipal sewage plant as an example

Use the utility model provides a MBBR filler structure, department scale 15000m³And d, adding the MBBR filler into a biological aeration tank of the original process, transforming the MBBR filler into an MBBR process, improving the nitrogen and phosphorus removal capability of a biological unit, reducing the burden of a subsequent advanced treatment unit, and enabling the effluent of a sewage plant to stably meet the requirement of a first-level A standard under the condition of the lowest transformation cost. The specific implementation scheme is as follows:

the used filler combination mode is that the inner layer sponge block filler (modified polyurethane) and the outer layer shell filler (modified PP plastic) are combined and used, and the density of the filler is close to 1;

the used filler is suspended in the biological reaction tank and is in a fluidized state through aeration and stirring;

the short carbon fiber components are added in the outer layer and the inner layer of the filler in the manufacturing process, 15-25% of powdered activated carbon is adsorbed, the specific surface area, the hydrophilicity and the biological affinity of the filler are increased, and the film forming capability of the filler is increased;

the outer and inner layer structure of the filler is added with 5-8mg/kg soluble rare earth compound of filler base material and dozens of mineral substances and trace elements such as silicon, aluminum, manganese, iron and the like in the manufacturing process, so that the physical and chemical properties of the filler are optimized, and the start of the biofilm reactor can be effectively accelerated.

In a biological reaction tank, a biological film attached to the surface of the central modified polyurethane in the filler is in an anaerobic state, a biological film attached to the surface of the outer layer modified polyurethane is in an anoxic state, and a biological film attached to the surface of the outer layer modified PP plastic is in an aerobic state;

different anaerobic, anoxic and aerobic functional zones are artificially constructed in the biological filler, so that the nitrogen and phosphorus removal reaction of the wastewater in the same biological tank can be realized;

the adding amount of the filler is controlled to be 10-20 percent, which is lower than that of the common biological filler, and the biological loading efficiency is extremely high;

the novel MBBR filler structure is convenient to operate in the upgrading and reconstruction of a sewage plant, the investment cost is low, and the large-scale engineering reconstruction of the original biological tank is not needed;

the engineering application result shows that the application of the combined biological filler can greatly improve the nitrogen and phosphorus removal efficiency of the biological unit, the removal rate of ammonia nitrogen can reach more than 98 percent, the load of a subsequent advanced treatment unit is effectively reduced, and the effluent of a sewage plant stably meets the requirement of first-class A in the GB18918-2002 standard.

According to the utility model discloses a MBBR filler structure to this MBBR filler structure can regard as the advanced treatment unit of conventional sewage treatment play water as the MBBR technology of core, also can be used to pollute the water body a little and reinforce and get rid of like the nitrogen phosphorus pollution of riverway water, this system can be according to the quality of water index requirement adjustment technology auxiliary equipment (aeration systems can dispose or cancel as required) and the processing load (get rid of load and filler filling ratio adjustment design parameter according to the pollutant) of water come to handle as required, in order to guarantee that the system can make full use of the carbon source in the former aquatic carry out processes such as biodegradable and nitrify-denitrification.

The above detailed description of the spherical MBBR packing structure with reference to the embodiments is illustrative and not restrictive, and several embodiments can be cited within the scope of the present invention, so that changes and modifications that do not depart from the general inventive concept are intended to be within the scope of the present invention.

Claims

1. The utility model provides a spherical MBBR filler structure which characterized by: the novel biological membrane biological adsorption device comprises a spherical shell, wherein the shell is of an integral structure formed by buckling an upper semicircular shell and a lower semicircular shell, the surface of the spherical shell is hollowed, the hollowed shape is triangular, each side of the triangle is connected with a framework through a cross-shaped or a m-shaped external connection framework to form a web shape, gaps among the frameworks extend towards the inside of the shell to form an inner wall, the inner surface and the outer surface of the inner wall are provided with biological membrane adhesion layers, and sponge block fillers are filled in the spherical shell.

2. The spherical MBBR packing structure of claim 1, wherein: the buckling mode of the upper semicircular shell and the lower semicircular shell adopts flange connection, buckle connection or threaded connection.

3. The spherical MBBR packing structure of claim 1 or claim 2, wherein: the material of the upper semicircular shell and the lower semicircular shell is modified PP plastics, the material of the spherical shell is modified PP plastics, the wall thickness is 5-10mm, the outer diameter of the shell is 30-100mm, and the sponge block filler is modified polyurethane sponge.