CN214218303U - Multi-filler mud-film composite MBBR reactor - Google Patents

Multi-filler mud-film composite MBBR reactor Download PDF

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Publication number
CN214218303U
CN214218303U CN202023117363.3U CN202023117363U CN214218303U CN 214218303 U CN214218303 U CN 214218303U CN 202023117363 U CN202023117363 U CN 202023117363U CN 214218303 U CN214218303 U CN 214218303U
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filler
rope
bio
tank body
mbbr
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周龙坤
关晓琳
王怀林
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Jiangsu Kaimi Membrane Technology Co ltd
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Jiangsu Kaimi Membrane Technology Co ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00—Technologies for wastewater treatment
    • Y02W10/10—Biological treatment of water, waste water, or sewage

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Abstract

The utility model discloses a multi-filler mud-film composite MBBR (moving bed biofilm reactor), which comprises an MBBR tank body, wherein the bottom of the tank body is provided with a perforated pipe aerator, a biological rope filler support is arranged above the perforated pipe aerator, and a suspended biological rope filler is arranged on the biological rope filler support and distributed in a dense-sparse step manner along the water inlet direction; a suspended MBBR filler is arranged in the tank body and freely distributed in the tank body; the lower end of the front side wall of the tank body is provided with a water inlet, the upper end of the rear side wall of the tank body is provided with a water outlet, the water outlet is provided with a screen, the rear end of the tank body is provided with a water outlet weir, and the water outlet is communicated with the water outlet weir. The utility model solves the problems of slow speed of filling and film forming and small film forming amount of the existing MBBR reactor; the MBBR filler is not fluidized uniformly; oxygen transfer efficiency is low, the problem that the energy consumption is on the high side, the utility model discloses an organic matter degradation and ammonia nitrogen nitration are effectual.

Description

Multi-filler mud-film composite MBBR reactor
Technical Field
The utility model relates to a sewage treatment technical field, concretely relates to compound MBBR reactor of many fillers mud membrane.
Background
In recent years, sewage plants in various places develop grade-A upgrading transformation successively, however, transformation projects mostly face the problem of no new construction land for a biochemical pool, so how to realize the original pool upgrading transformation of the biochemical pool, and the treatment performance of the deep-excavation and submersible biochemical process becomes the key for realizing grade-A and even higher discharge standard. The sludge membrane composite MBBR combines an activated sludge process and a biofilm process, has the advantages of high treatment load, strong impact resistance, stable treatment effect, simple operation management, flexible process design and operation and the like, and is used as one of the first-choice processes for strengthening biological treatment in upgrading and reconstruction by numerous sewage treatment plants.
However, the existing sludge-membrane composite MBBR reactor has the following problems in use:
1. the MBBR filler film forming speed is low, and the film forming amount is small.
Among various types of MBBR (moving bed biofilm reactor) fillers, Polyethylene (PE) fillers are most widely applied and have the best efficiency, but are limited by material characteristics, poor PE hydrophilicity and biocompatibility, low film formation speed, small film formation amount, long period from film formation starting to maturation, difficult adaptation to the technical requirements of 'less production stop or no production stop' of standard improvement and transformation, small attached state microorganism amount and limited effect of enhanced biological treatment.
2. Fluidization is difficult to be uniform.
At the water inlet of the reactor, the sewage flow speed is high, the filler is easy to reach a fluidized state, however, the filler moves violently and is not suitable for the attachment growth of microorganisms, and the biological film is thin and is easy to fall off; meanwhile, the competition ability of autotrophic microorganisms on the MBBR filler to space and nutrition is weaker than that of heterotrophic microorganisms in the activated sludge, and the decontamination effect is greatly limited. At the water outlet of the reactor, the sewage flow speed is low, the fillers cannot be fluidized up and down, the local accumulation phenomenon occurs, and the fillers are crowded and rubbed with each other to damage the biological membrane. In addition, the fluidization of the MBBR filler is influenced by the fluctuation of the water inlet amount.
3. The oxygen transfer efficiency is low and the energy consumption is higher.
The most adopted MBBR reactor in the prior art is perforated pipe aeration, MBBR filler has a cutting effect on bubbles, large bubbles are cut into small bubbles, the gas-liquid contact area is enlarged, and the volume mass transfer coefficient is improved. In response, the perforated pipe aeration rate can be increased, but the energy consumption is increased accordingly.
SUMMERY OF THE UTILITY MODEL
To the problem that current compound MBBR reactor of mud membrane exists, the utility model aims to provide a compound MBBR reactor of many fillers mud membrane.
The utility model adopts the technical proposal that:
a multi-filler mud-film composite MBBR reactor comprises an MBBR tank body, wherein a perforated pipe aerator is arranged at the bottom of the tank body, a biological rope filler support is arranged above the perforated pipe aerator, and a suspended biological rope filler is arranged on the biological rope filler support and distributed in a stepped manner from dense to sparse along the water inlet direction; a suspended MBBR filler is arranged in the tank body and freely distributed in the tank body; the lower end of the front side wall of the tank body is provided with a water inlet, the upper end of the rear side wall of the tank body is provided with a water outlet, the water outlet is provided with a screen, the rear end of the tank body is provided with a water outlet weir, and the water outlet is communicated with the water outlet weir.
Furthermore, the biological rope packing support is provided with a biological rope-rich packing area, a biological rope-flat packing area and a biological rope-poor packing area along the water inlet direction, the biological rope packing in the biological rope-rich packing area is continuously arranged at equal intervals, the biological rope packing in the biological rope-flat packing area is arranged at intervals of 1 curtain, and the biological rope packing in the biological rope-poor packing area is arranged at intervals of 2-3 curtains.
Furthermore, the biological adhesion fiber rings on the hanging biological rope fillers in the biological rope filler-rich area and the biological rope filler-poor area are correspondingly arranged one by one, and the biological adhesion fiber rings on the biological rope fillers in the flat biological filler area are correspondingly arranged one by one or in a staggered way with the biological adhesion fiber rings on the hanging biological rope fillers in the biological rope filler-rich area and the biological rope filler-poor area.
Furthermore, level meters are respectively arranged in the tank body and the water outlet weir, a pneumatic regulating valve is arranged on an aeration pipeline of the perforated pipe aerator, and the pneumatic regulating valve is interlocked with the level meters in the tank body and the water outlet weir.
Furthermore, the suspended biological rope filler comprises a central rope and a biological adhesion fiber ring, the central rope is formed by spirally weaving a plurality of polyethylene or polypropylene fibers in a clockwise direction, the biological adhesion fiber ring is formed by drawing hydrophilic modified polyvinylidene chloride fibers at an angle of 15-45 degrees downwards along the weaving direction, and the diameter of the polyvinylidene chloride fibers is 0.01-0.05 mm.
Further, the suspended MBBR packing has a rated height of 12mm, a diameter of 25mm and a body surface area of 500m2/m3。
The utility model has the advantages that:
this application adopts along the direction of intaking and arranges in succession by close to three biological rope filler district of dredging the ladder, the biological rope filler equidistant in the rich biological rope filler district, and its main action lies in: (1) biological rope packing is used for water inlet energy dissipation and water inlet amount fluctuation resistance, so that fluidization of MBBR packing is facilitated; (2) the concentration of organic matters in the water inlet area is high, the concentration of dissolved oxygen required by degradation is high, the continuous arrangement of biological rope fillers enhances the cutting and oxygen transfer functions of biological attached fiber ring bubbles, and the degradation efficiency of the organic matters is improved; (3) the competition ability of autotrophic microorganisms on the biological rope filler on space and nutrition is superior to that of the MBBR filler, and a water inlet area can be fully utilized for nitrification; biological rope filler interval 1 curtain in flat biological rope filler district arranges, and its main function lies in: performing organic matter degradation and ammonia nitrogen nitration by cooperating with the activated sludge and the MBBR biofilm; the biological rope filler interval 2 ~ 3 curtains of in the poor biological rope filler district are arranged, and its main action lies in: the concentration of organic matters in the water outlet area is low, and the concentration of dissolved oxygen required by degradation is low. The large-interval arrangement of the biological rope filler can weaken the cutting and oxygen transfer function of the biological attached fiber ring bubbles, avoid the excessive permeation of dissolved oxygen to the reinforced biological rope filler and a biological membrane on the MBBR filler, form a micro-anoxic environment in the biological membrane and reinforce the synchronous nitrification and denitrification.
Drawings
Fig. 1 is a schematic structural diagram of the multi-filler mud-film composite MBBR reactor of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings and a preferred embodiment.
Referring to fig. 1, the embodiment provides a multi-filler sludge-membrane composite MBBR reactor, which includes an MBBR tank 1, a perforated pipe aerator 2 is arranged at the bottom of the tank 1, and the perforated pipe aerator 2 is connected to an aeration fan through an aeration pipe 10; a biological rope filler bracket 3 is arranged above the perforated pipe aerator 2, and hanging biological rope fillers 4 are arranged on the biological rope filler bracket 3; a suspended MBBR filler 5 is arranged in the tank body 1, and the suspended MBBR filler 5 is freely distributed in the tank body 1; the lower end of the front side wall of the tank body 1 is provided with a water inlet 6, the upper end of the rear side wall of the tank body is provided with a water outlet 7, the water outlet 7 is provided with a screen 8, the rear end of the tank body is provided with a water outlet weir 9, and the water outlet 7 is communicated with the water outlet weir 9. Liquid level meters are arranged in the tank body 1 and the water outlet weir 9.
The main effect of screen cloth 8 is for intercepting floated MBBR filler, avoids the filler to run off.
The perforated pipe aerator 2 mainly functions to provide biochemical oxygen supply for the reactor and power fluidization of the suspended MBBR filling material 5. The perforated pipe aerator 2 is composed of a plurality of perforated aeration branch pipes, in the embodiment, a pneumatic control valve is arranged on a main pipeline of each aeration branch pipe, the pneumatic control valve is interlocked with liquid level meters in the pool and the effluent weir to control the opening of the pneumatic control valve through the liquid level difference between the pool and the effluent weir, and the aeration amount is adjusted, so that the excessive accumulation of the suspended MBBR filler 5 in the effluent area due to the over-small aeration amount is prevented.
The hanging bio-rope padding 4 comprises a central rope and a bio-adhesive fiber ring. The central rope is formed by spirally weaving a plurality of high polymer fibers along the clockwise direction, and the material of the central rope is polyethylene or polypropylene. The biological adhesive fiber ring is formed by drawing a plurality of polymer fibers along the weaving direction. In this embodiment, it is preferable that the bio-adhesion fiber ring has a polymer fiber diameter of 0.01 to 0.05mm and is obliquely arranged at an angle of 15 to 45 ° downward, and the main function is to strongly cut large bubbles generated by the perforated aerator by using the ultra-fine bio-adhesion fiber ring and form a large amount of micro bubbles, so as to compensate for the deficiency of the MBBR filler and enhance the transfer of oxygen. The material of the biological attachment fiber ring is hydrophilic modified polyvinylidene chloride, the biological attachment fiber ring has high hydrophilicity, biological affinity and electropositivity, the film forming speed is high, the film forming amount is large, the defects of MBBR (moving bed biofilm reactor) fillers can be overcome, and the upgrading and modifying period is shortened.
In the embodiment, the biological rope filler bracket 3 is provided with a biological rope rich filler area, a flat biological rope filler area and a biological rope poor filler area along the water inlet direction, and the suspended biological rope fillers 4 in the three filler areas are arranged in a ladder from dense to sparse. The biological rope fillers in the biological rope-rich filler area are continuously arranged at equal intervals, the biological rope fillers in the flat biological rope filler area are arranged at intervals of 1 curtain, and the biological rope fillers in the biological rope-poor filler area are arranged at intervals of 2-3 curtains.
In this embodiment, the bio-adhesion fiber rings on the hanging bio-rope fillers 4 in the three filler regions are arranged in a one-to-one correspondence, and in other embodiments, the bio-adhesion fiber rings on the bio-rope fillers in the flat bio-filler region can also be arranged in a staggered manner, and mainly function as: the mutual contact between the MBBR filler and the biological rope filler is strengthened, and the effects of organic matter degradation and ammonia nitrogen nitration are further improved.
Floated MBBR packs with hanging biological rope filler coordinated action, and hanging biological rope filler has the interception effect to floated MBBR packs, alleviates the MBBR and packs the phenomenon of piling up at the play pool, and MBBR packs to biological rope filler, especially biological rope filler upper portion has the scouring action, can avoid biological rope filler upper end microorganism excessively to breed, hinders the microbubble passageway that rises.
In this example, the suspended MBBR filler is preferably a Weiliya AnoxKaldnes TM K3 type, AnoxKaldnes TM K3MBBR filler having a high ratingThe degree is 12mm, the diameter is 25mm, and the surface area of the main body is 500m2/m3. The filler size is too small, the collision probability of the MBBR filler and the fixed biological rope filler is too low, and the synergistic effect is weak; the filler size is too big, and MBBR filler and fixed biological rope filler collision strength are too high, and the biomembrane drops easily.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and the improvements and modifications are also within the protection scope of the present invention.

Claims (6)

1. A multi-filler mud-film composite MBBR reactor comprises an MBBR tank body and is characterized in that a perforated pipe aerator is arranged at the bottom of the tank body, a biological rope filler support is arranged above the perforated pipe aerator, and suspended biological rope fillers are arranged on the biological rope filler support and distributed in a step-by-step manner from dense to sparse along the water inlet direction; a suspended MBBR filler is arranged in the tank body and freely distributed in the tank body; the lower end of the front side wall of the tank body is provided with a water inlet, the upper end of the rear side wall of the tank body is provided with a water outlet, the water outlet is provided with a screen, the rear end of the tank body is provided with a water outlet weir, and the water outlet is communicated with the water outlet weir.
2. The multi-filler mud-film composite MBBR reactor according to claim 1, wherein the bio-rope filler support is provided with a bio-rope-rich filler area, a bio-rope-flat filler area and a bio-rope-poor filler area along the water inlet direction, bio-rope fillers in the bio-rope-rich filler area are continuously arranged at equal intervals, bio-rope fillers in the bio-rope-rich filler area are arranged at intervals of 1 curtain, and bio-rope fillers in the bio-rope-poor filler area are arranged at intervals of 2-3 curtains.
3. The multi-filler sludge-membrane composite MBBR reactor according to claim 2, wherein the bio-adhesion fiber rings on the hanging bio-rope fillers in the bio-rope-rich filler region and the bio-rope-poor filler region are correspondingly arranged one by one, and the bio-adhesion fiber rings on the bio-rope fillers in the flat bio-filler region are correspondingly arranged one by one or staggered with respect to the bio-adhesion fiber rings on the hanging bio-rope fillers in the bio-rope-rich filler region and the bio-rope-poor filler region.
4. The multi-filler sludge-film composite MBBR reactor according to claim 1 or 2, wherein level meters are respectively arranged in the tank body and the effluent weir, and a pneumatic regulating valve is arranged on an aeration pipeline of the perforated pipe aerator and is interlocked with the level meters in the tank body and the effluent weir.
5. The multi-filler sludge-membrane composite MBBR reactor according to claim 1 or 2, wherein the suspended bio-rope filler comprises a central rope and a bio-adhesion fiber ring, the central rope is formed by spirally weaving a plurality of polyethylene or polypropylene fibers along a clockwise direction, the bio-adhesion fiber ring is formed by drawing hydrophilic modified polyvinylidene chloride fibers downwards at an angle of 15-45 degrees along the weaving direction, and the diameter of the polyvinylidene chloride fibers is 0.01-0.05 mm.
6. The multi-packing mudfilm composite MBBR reactor of claim 1 or 2, wherein the suspended MBBR packing has a nominal height of 12mm, a diameter of 25mm, and a body surface area of 500m2/m3。
CN202023117363.3U 2020-12-22 2020-12-22 Multi-filler mud-film composite MBBR reactor Active CN214218303U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202023117363.3U CN214218303U (en) 2020-12-22 2020-12-22 Multi-filler mud-film composite MBBR reactor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202023117363.3U CN214218303U (en) 2020-12-22 2020-12-22 Multi-filler mud-film composite MBBR reactor

Publications (1)

Publication Number Publication Date
CN214218303U true CN214218303U (en) 2021-09-17

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202023117363.3U Active CN214218303U (en) 2020-12-22 2020-12-22 Multi-filler mud-film composite MBBR reactor

Country Status (1)

Country Link
CN (1) CN214218303U (en)

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