CN210261300U

CN210261300U - Ecological MBBR integration reaction unit

Info

Publication number: CN210261300U
Application number: CN201921045723.8U
Authority: CN
Inventors: 朱海波; 景振江; 郭利
Original assignee: Yangling Vocational and Technical College
Current assignee: Yangling Vocational and Technical College
Priority date: 2019-07-05
Filing date: 2019-07-05
Publication date: 2020-04-07
Anticipated expiration: 2029-07-05

Abstract

The patent of the utility model provides an ecological MBBR integration reaction unit, including box, guiding device, inner loop aerator, mixed liquid force reflux unit, water hyacinth, box, mixed liquid force reflux unit, guiding device are second biological reaction district, and water hyacinth fixed mounting is inside the box on second biological reaction district top. The utility model takes MBBR filler, internal circulation aeration and phytoplankton as the core, and the front section of the reactor utilizes the internal circulation aeration to realize the degradation of organic matters and biological denitrification in the sewage; the water hyacinth is arranged at the top of the water surface at the rear end of the reactor to absorb N, P in the sewage to realize synchronous biological nitrogen and phosphorus removal, and the device has the advantages of low investment cost, good biological nitrogen and phosphorus removal effect, low water eutrophication degree and high organic matter removal rate.

Description

Ecological MBBR integration reaction unit

Technical Field

The utility model belongs to the technical field of the environmental protection water treatment facilities, especially, relate to an ecological type MBBR integration reaction unit.

Background

With the continuous development of the economy of China, the living standard of the nation is continuously improved, the requirement on diversified substances is higher and higher, the problem of environmental pollution is more and more prominent, and particularly in the western region of China, water pollution becomes an important problem which restricts the economic development and influences the living standard of the people. At home, organic pollutants and nitrogen-containing pollutants in sewage are mainly treated by a biological method at the present stage, particularly in biochemical treatment of sewage in the industries of pharmacy, chemical engineering and the like, the main types of the pollutants are an activated sludge method and a biofilm method, and the activated sludge method still has the defects of sludge bulking, large structure pool capacity, high capital construction cost and the like; although the biomembrane method makes up for the partial deficiency of the activated sludge method to a certain extent, because of the defects of easy blockage of the filler per se, difficult maintenance and the like, the biomembrane method is not satisfactory in practical application, especially has the defects and the disadvantages of the two processes for removing nitrogen and phosphorus, the moving bed membrane bioreactor (MBBR) process has the advantages of both the traditional fluidized bed and the biological contact oxidation method, and the biomass and the biological species in the reactor are improved by adding a certain amount of suspension carriers into the reactor, so that the treatment efficiency of the reactor is improved. The collision and shearing action of the carrier in water enables air bubbles to be finer, and the utilization rate of oxygen is increased; in addition, each carrier has different biological species inside and outside, anaerobic bacteria or facultative bacteria grow inside, and aerobic bacteria grow outside, so that each carrier is a micro-reactor, nitrification reaction and denitrification reaction exist simultaneously, and the treatment effect is improved.

The disadvantages of the existing MBBR technology are as follows: 1. the reactor is easy to block, the MBBR technology is practically applied, and the suspended filler selected in the reactor is used for ensuring the fluidization state in the reactor, so the suspended filler with the density close to 1 is often selected as a biological carrier, and thus the biological carrier is accumulated on the liquid surface in a large amount under the action of traditional bottom aeration, and the biological denitrification effect is seriously influenced; 2. the phosphorus removal effect is poor, and the MBBR technology has strong biological denitrification and organic pollutant (COD) removal capability, but has limitation on the removal of phosphorus in sewage, thereby causing water eutrophication.

SUMMERY OF THE UTILITY MODEL

Elucidation to above-mentioned background art, the utility model provides an ecological type MBBR integration reaction unit solves among the prior art in the MBBR reactor that the bio-carrier blocks up and the poor technical problem of biological dephosphorization effect.

In order to achieve the above object, the utility model provides a following technical scheme:

an ecological MBBR integrated reaction device comprises a box body, a flow guide device, an internal circulation aerator, a mixed liquid forced backflow device and a water hyacinth, wherein a mixed liquid collecting tank is arranged at the bottom of the box body, a water outlet device and a water inlet are arranged at the top of the box body, the internal circulation aerator is connected with an aeration fan through a ventilation pipeline, a first biological reaction area is arranged between the inner wall of the box body and the flow guide device, the internal circulation aerator is arranged in the first reaction area, and the periphery of the internal circulation aerator is filled with MBBR filler and activated sludge strain mixture; the box body, the mixed liquid forced reflux device and the flow guide device are a second biological reaction area, and the water hyacinth is fixedly arranged in the box body at the top end of the second biological reaction area.

In the technical scheme, the box body is integrally welded and prepared by adopting one of carbon steel, glass fiber reinforced plastic materials or stainless steel.

In the above technical scheme, the top of the box body is provided with an inspection manhole.

In the technical scheme, the flow guide device is a U-shaped flow guide device, the thickness of the flow guide device is 6-8 mm, the vertical distance between every two adjacent plates is 10-20 cm, and channel steel is adopted for welding and fixing.

In the technical scheme, in the ecological MBBR integrated reaction device, the reaction time is 0.5-1.0 m²An internal circulation aerator is arranged in the plane range of the aerator.

In the technical scheme, the mixed liquid forced reflux device is of a slope structure with an inclination gradient of 45-72 degrees.

The utility model discloses beneficial effect: MBBR filler, internal circulation aeration and phytoplankton are taken as cores, internal circulation aeration is utilized at the front section of the reactor to fill a biological carrier in the whole reactor, and organic matter COD degradation and biological denitrification in sewage are realized by utilizing the synergistic effect of anaerobic ammonium oxidation bacteria, autotrophic nitrite bacteria oxygen bacteria and denitrifying bacteria in an anoxic layer in the biological carrier and aerobic ammonium oxidation bacteria, nitrite bacteria and aerobic denitrifying bacteria in an external aerobic layer; the water hyacinth is passed through the top of the water surface at the rear end of the reactor, N, P in the sewage is absorbed by utilizing the strong root system of the water hyacinth, synchronous biological nitrogen and phosphorus removal is realized, the treatment rates of COD and N in the sewage are improved to more than 95%, and the treatment efficiency of P is improved to more than 85%.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

The device comprises a box body 1, an internal circulation aerator 2, MBBR fillers 3, a flow guide device 4, a basket type water hyacinth 5, a water outlet device 6, a mixed liquid collecting tank 7, a mixed liquid forced reflux device 8, an aeration fan 9, an inspection manhole 10 and a water inlet 11.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings of the present invention, and obviously, the described embodiments are only some embodiments, not all embodiments, of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the scope of the present invention.

According to the embodiment shown in fig. 1, the integrated ecological MBBR reaction apparatus includes a tank, a flow guide device, an internal circulation aerator, a mixed liquid forced reflux device, and a basket-type water hyacinth.

The bottom half sets up and mixes liquid collecting vat, the box top sets up out water installation and water inlet, the box top sets up the inspection manhole, set up first biological reaction district between box inner wall and U type guiding device, U type guiding device adopts the anticorrosive material preparation of two 6 ~ 8mm thick PP materials or 6 ~ 8mm thick carbon steel, vertical interval between two adjacent panels, it calculates to mix liquid backward flow when adding hour according to sewage hour inflow, generally be 10cm ~ 20cm, adopt the channel-section steel to form the U-shaped behind bottom welded fixed connection. The U-shaped flow guide device is adopted, traditional pipes or wall flow guide facilities are abandoned, the sludge concentration is kept at 6000-8000 mg/L, and the purpose of removing pollutants is achieved under the condition of high activated sludge concentration.

The periphery of the internal circulation aerator is filled with a mixture of MBBR filler and activated sludge strain, wherein the activated sludge strain refers to a general name of microbial communities and organic substances and inorganic substances attached to the microbial communities. The microbial community mainly comprises bacteria, protozoa, algae and the like, the activated sludge strain is generally added according to 8-10% of the effective volume of the reaction device or 5000-8000 mg/L of the suspended solid concentration of the mixed liquid, and the MBBR filler adopts the MBBR filler sold in the market and is added according to 25-60% of the effective volume of the reaction device.

The utility model discloses an in the ecological type MBBR integration reaction unit, according to reaction unit's planar area, per 0.5 ~ 1.0m²Within range, set up an inner loop aerator, inner loop aerator sets up in first reaction zone, and the inner loop aerator passes through the pipeline to be connected with aeration fan, generally chooses for use rotary blower or roots's fan to make the air source, and the air-water ratio adopts 15 ~ 35: 1, adopting the gas principle, after the gas enters the aerator, the density of the mixed liquid in the aerator is reduced to form negative pressure, so that the external sludge-water mixed liquid is sucked into the bottom of the aeratorThe part is mixed with the introduced air, and the sludge is prevented from being accumulated at the bottom of the tank due to the suction effect of the aerator which is kept against the sludge. The sludge-water mixed liquid is sprayed out from the upper part, the sludge naturally descends after being waked to the water surface of the tank by the bubbles to form an upper internal circulation and a lower internal circulation, each aerator is very large in service, the effect of water-air mixed aeration is achieved, the sludge-water and the air form 4 rotations and 4 cutting in the aerator, large bubbles are changed into small bubbles, the water and the air of the aeration tank are fully mixed, no dead angle phenomenon exists, micro bubbles naturally ascend to the water surface from the bottom of the tank, and the utilization rate of oxygen is high; the air resistance is small, and the energy is saved.

The utility model discloses a concrete reflux device, including box, mixed liquid forced reflux device, guiding device, basket formula water hyacinth fixed mounting is inside the box on second biological reaction district top, through U type guiding device and rear end tank body slope, form unique mixed liquid forced reflux, set up mixed liquid forced reflux device in this position, utilize sewage mixed liquid self gravity, the gravity subsides to mixed liquid collecting vat under the slope 45 ~ 72 condition, concrete slope is different according to the nature of waste water and mixed liquid concentration, confirm actual slope through field test, generally to small-size integrated equipment, weld into mixed liquid forced reflux device with the steel sheet, adopt C20 plain concrete to pour in to medium and large-scale concrete structures, the mortar is finished. The mixed liquid forced reflux device utilizes gravity flow to enable mixed liquid in the tank to flow back to the mixed liquid reflux groove at the bottom of the tank, nitrification and denitrification effects in sewage are achieved, the removal rate of ammonia nitrogen in the sewage reaches more than 95%, and the traditional mixed liquid reflux adopts gas or mechanical forced reflux, so that the denitrification effect is destroyed to a certain extent, and the energy consumption problem exists.

The water hyacinth is fixedly arranged in the box body at the top end of the second biological reaction zone, and the basket-type water hyacinth is used as an assistant, so that the biological nitrogen and phosphorus removal is realized, the plant self-cleaning function is utilized, the traditional biological nitrogen and phosphorus removal is changed, strict anaerobic and anoxic environments are required, and the biological nitrogen and phosphorus removal method can be realized under a specific environment.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. The utility model provides an ecological MBBR integration reaction unit which characterized in that: the biological sewage treatment device comprises a box body, a flow guide device, an internal circulation aerator, a mixed liquid forced reflux device and a water hyacinth, wherein a mixed liquid collecting tank is arranged at the bottom of the box body, a water outlet device and a water inlet are arranged at the top of the box body, the internal circulation aerator is connected with an aeration fan through a ventilation pipeline, a first biological reaction zone is arranged between the inner wall of the box body and the flow guide device, the internal circulation aerator is arranged in the first biological reaction zone, and the periphery of the internal circulation aerator is filled with a mixture of MBBR filler and activated sludge strains; the box body, the mixed liquid forced reflux device and the flow guide device are a second biological reaction area, and the water hyacinth is fixedly arranged in the box body at the top end of the second biological reaction area.

2. The integrated ecological MBBR reaction device according to claim 1, wherein: the box body is integrally welded and prepared by adopting one of carbon steel, glass fiber reinforced plastic materials or stainless steel.

3. The integrated ecological MBBR reaction device according to claim 1, wherein: and an inspection manhole is arranged at the top of the box body.

4. The integrated ecological MBBR reaction device according to claim 1, wherein: the flow guide device is a U-shaped flow guide device, plates with the thickness of 6-8 mm are prepared, the vertical distance between every two adjacent plates is 10-20 cm, and channel steel is adopted for welding and fixing.

5. The integrated ecological MBBR reaction device of claim 1Characterized in that: in the ecological MBBR integrated reaction device, the reaction time is 0.5-1.0 m²An internal circulation aerator is arranged in the range.

6. The integrated ecological MBBR reaction device according to claim 1, wherein: the mixed liquid forced reflux device is of a slope structure with the inclination of 45-72 degrees.