CN211445417U - An integrated sewage treatment equipment of oxidation ditch + MBBR - Google Patents

Abstract

The utility model discloses an integrated sewage treatment device of an oxidation ditch and MBBR, which comprises a horizontal shell, a water inlet and a water outlet which are respectively arranged on the horizontal shell, the horizontal shell is provided with a main clapboard which is divided into at least three cabins in the length direction, an A/O area is communicated with a settling area through a pipeline, an overflow port/a water passing port is arranged on the main clapboard between the settling area and a water outlet area, the integrated sewage treatment device is characterized in that at least one cabin is an A/O area which is sequentially arranged from left to right, at least one cabin is the settling area, at least one cabin is the water outlet area, a dividing plate is arranged in the A/O area, the A/O area is divided into an anoxic pond and an aerobic pond along the length direction of the horizontal shell by the dividing plate, an aeration device is arranged in the aerobic pond, a supporting plate is arranged in the anoxic pond along the length direction of the horizontal shell to divide the, the anaerobic section and the anoxic section form an oxidation ditch circulation channel, and the water inlet is positioned in the anaerobic section of the anoxic tank.

Description

An integrated sewage treatment equipment of oxidation ditch + MBBR

technical field

The utility model belongs to the field of sewage treatment, in particular to the field of rural sewage treatment.

Background technique

Most of the integrated rural sewage treatment equipment in the prior art are made of plastic materials, which have low strength, difficult transportation, installation and construction, and high labor and material costs. Moreover, the current integrated rural sewage treatment equipment has poor denitrification effect and effluent quality. Often the total nitrogen content is too high, which can easily cause secondary pollution to the river.

Utility model content

The purpose of the utility model is to provide a small footprint, low equipment cost, convenient transportation, combining oxidation ditch process, secondary sedimentation tank process and fiber membrane filtration process, strong resistance to water flow impact, good denitrification effect, and later maintenance. A convenient integrated sewage treatment equipment of oxidation ditch + MBBR.

In order to achieve the purpose of the above utility model, the technical scheme of the present utility model is: an integrated sewage treatment equipment of oxidation ditch+MBBR, comprising a horizontal shell, a water inlet and a water outlet respectively opened on the horizontal shell, the horizontal shell, and the horizontal shell. The main partition of the type shell is divided into at least three compartments in the length direction. The A/O area is connected to the sedimentation area through pipes. It is characterized in that, from left to right, at least one cabin is set as the A/O area, at least one cabin is the sedimentation area, at least one cabin is the water outlet area, and a partition plate is arranged in the A/O area, and the partition plate is along the horizontal shell. The A/O area is divided into anoxic pools and aerobic pools in the length direction, overflow ports/water passages are arranged on the partition plate, aeration devices are arranged in the aerobic pools, and branches are arranged in the anoxic pools along the length direction of the horizontal shell. The partition divides the anoxic tank into two chambers connected end to end, which are the anaerobic section and the anoxic section respectively, forming a circulation channel of the oxidation ditch, and the water inlet is located in the anaerobic section of the anoxic tank.

Preferably, the settling area is provided with a clapboard along the length of the horizontal shell to separate the settling area into a secondary sedimentation tank and a sludge sedimentation tank. A combined pipeline is set between the aerobic tank and the secondary sedimentation tank to communicate with the secondary sedimentation tank and the sludge sedimentation tank. A water communication device is arranged between the tanks to communicate, and a sludge discharge pipe and a mixed liquid return device connected to the anoxic tank are arranged in the sludge sedimentation tank.

Preferably, the water outlet area is provided with a partition plate along the length direction of the horizontal shell, the partition plate divides the water outlet area into a filter tank and an equipment tank, and the filter tank is provided with a fiber membrane reactor and a water outlet.

Preferably, MBBR packing and/or aeration device and/or submersible flow propeller are arranged in the anaerobic section and/or the anoxic section.

Preferably, a combined pipeline is arranged between the aerobic tank and the secondary sedimentation tank, and at least one end of the combined pipeline extends into the aerobic tank, and at least one end of the combined pipeline extends into the middle and lower ends of the secondary sedimentation tank.

Preferably, the water communication device includes a connecting pipeline and a sludge pump connecting the secondary sedimentation tank and the sludge sedimentation tank.

Preferably, the mixed liquid return device is a sludge pump return, one end of the return pipe extends into the anoxic tank, and one end extends into the sludge sedimentation tank.

Preferably, the fiber membrane reactor mainly includes a frame, several fiber membrane assemblies and water outlet pipelines, the fiber membrane assembly includes several water outlet support pipes, the outer surface of the water outlet support pipes is wrapped with filter cloth, the water outlet pipes are connected with the water outlet pipes, and the water outlet pipes extend Inlet and outlet.

Preferably, an ultraviolet disinfection device is provided in the water outlet pipe.

Preferably, the horizontal shell structure is a rectangular body, and the material is stainless steel or carbon steel or various synthetic steels.

The working principle of the utility model: sewage flows in from the water inlet at the anaerobic section, and is subjected to anaerobic treatment. The organic matter in the sewage is decomposed, metabolized and digested by anaerobic bacteria, so that the content of organic matter in the sewage is greatly reduced, and then the sewage passes through the diving. The flow propeller flows by itself to the anoxic section. Since the anoxic section is equipped with an aeration device, intermittent micro-aeration is carried out to form an anoxic reaction, denitrification to remove nitrate nitrogen, and at the same time to remove part of BOD, and due to the dosing of oxygen in the anoxic tank. MBBR packing can adsorb some impurities and SS, and then the sewage flows into the aerobic tank through the overflow port/water port set on the partition plate between the anoxic tank and the aerobic tank for aerobic treatment, and undergoes biological metabolism to degrade organic matter, so that the It is stable and harmless, and due to the continuous aeration in the aerobic tank, the MBBR filler added inside is continuously rotated and rolled to form the MBBR fluidized bed effect, and then the sewage flows into the secondary sedimentation tank through the pipeline connecting the aerobic tank and the secondary sedimentation tank. , The inverted trapezoidal table structure in the secondary sedimentation tank and the filled inclined tube packing are fully precipitated, and the SS and impurities in the sewage are filtered and removed, and a part of the precipitated sludge is sucked by the sludge pump, and the sludge is discharged into the sludge through the pipeline. In the sedimentation tank, for further sedimentation, part of the sewage flows into the filter tank through the overflow port/water outlet on the main clapboard adjacent to the secondary sedimentation tank and the filter tank, and a part of the sludge in the sludge sedimentation tank passes through the sludge discharge pipe. , The sludge pump is sucked and discharged to prevent clogging, and part of it is pumped back to the anaerobic section in the anoxic tank through the sludge pump through the mixed liquid return device to form a nitrification and denitrification reaction for further treatment. The sewage in the filter tank passes through After the fiber filter cloth adsorbs and filters SS, the sewage flows into the water outlet pipe, and is sterilized by the ultraviolet disinfection device in the water outlet pipe and discharged or enters the next process.

The beneficial effects of the present utility model are:

(1) The horizontal shell material adopted by the utility model adopts a steel structure, which has high strength, corrosion resistance, high production efficiency, fast transportation, installation and construction, and is convenient for later maintenance.

(2) The utility model integrates various processes such as anaerobic, anoxic, aerobic, precipitation, filtration, disinfection, etc., and can adapt to rural domestic sewage in various environments. Convenient.

(3) The utility model connects the sludge sedimentation tank with the anoxic tank through the mixed liquid return device to realize the nitrification and denitrification reaction, which can further remove nitrogen and phosphorus.

(4) The utility model makes full use of the characteristics of the complete mixing of sewage in the oxidation ditch process, and has strong anti-shock load capacity, which can quickly dilute high-concentration pollutants, and further increase the anti-shock load capacity by adding MBBR fillers. The groove is a circulating flow, and the MBBR filler will not accumulate at the end of the A/O area, which will affect the treatment effect.

Description of drawings

FIG. 1 is a schematic top view of the structure of the present invention.

FIG. 2 is a schematic diagram of the structure of I-I of FIG. 1 of the present utility model.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

Embodiment 1: As shown in Figure 1, a kind of integrated sewage treatment equipment of oxidation ditch+MBBR includes a horizontal casing 1, and the water inlet 2 and the water outlet 3 respectively opened on the horizontal casing 1 are arranged on the horizontal casing 1. The two main partitions of the horizontal shell 1, the first main partition 1.1 and the second main partition 1.2, the second main partition 1.2 is provided with a water outlet 1.2.1, which divides the horizontal housing 1 into three The cabin, the first cabin 4 on the left is the A/O area, the second cabin 5 in the middle is the sedimentation area, the third cabin 6 on the right is the water outlet area, the first cabin 4 is provided with a first partition plate 4.1, the first partition plate 4.1 The water passage 4.1.1 is set on the upper part, and the first partition plate 4.1 divides the A/O area into anoxic pool 4.2 and aerobic pool 4.3 along the length direction of the horizontal shell 1, and an aeration device 4.3 is arranged in the aerobic pool 4.3 .1 and MBBR suspension packing 4.3.2, the anoxic tank 4.2 is provided with a first partition along the length of the horizontal shell 1 4.4 The anoxic tank 4.2 is divided into two chambers connected end to end, which are the anaerobic section 4.2.1 and anoxic section 4.2.2, forming an oxidation ditch circulation channel, water inlet 2 is located in anoxic tank 4.2 anaerobic section 4.2.1, anaerobic section 4.2.1 is equipped with MBBR suspended filler 4.3.2, anoxic Section 4.2.2 is provided with aeration device 4.3.1, MBBR suspension packing 4.3.2 and submersible flow propeller 4.3.3, the second compartment 5 is provided with a second partition 5.1 along the length of the horizontal shell 1 to settle the The zone is divided into secondary sedimentation tank 5.2 and sludge sedimentation tank 5.3. The secondary sedimentation tank 5.2 is filled with inclined tube filler 9. A combined pipeline 5.3 is set between the aerobic tank 4.3 and the secondary sedimentation tank 5.2. The secondary sedimentation tank 5.2 and the sludge A water communication device 5.4 is set between the sedimentation tanks 5.3 to communicate. The water communication device 5.4 includes a connecting pipeline 5.4.1 and a sludge pump 5.4.2 connecting the secondary sedimentation tank 5.2 and the sludge sedimentation tank 5.3. The sludge sedimentation tank 5.3 is equipped with There is a sludge discharge pipe 5.3.1 and a mixed liquid return device 7 connected to the anoxic tank 4.2. The mixed liquid return device 7 includes a return pipe 7.1 and a sludge pump 5.4.2. The third compartment 6 is along the length of the horizontal shell 1. There is a second partition plate 6.1 at the place, and the second partition plate 6.1 divides the water outlet into a filter tank 6.2 and an equipment tank 6.3. The filter tank 6.2 is provided with a fiber membrane reactor 8 and a water outlet 3. The fiber membrane reactor 8 includes Frame 8.1, several fiber membrane modules 8.2 and water outlet pipelines. The fiber membrane module 8.2 includes several water outlet support pipes 8.3. The outer surface of the water outlet support pipes 8.3 is wrapped with filter cloth 8.4. The water outlet 3 and the water outlet pipe 8.5 are provided with an ultraviolet disinfection device 10.

Claims (10)

1. An integrated sewage treatment device of an oxidation ditch and MBBR comprises a horizontal shell, a water inlet and a water outlet which are respectively arranged on the horizontal shell, the horizontal shell is provided with a main partition board which is divided into at least three cabins in the length direction, an A/O area is communicated with a sedimentation area through a pipeline, an overflow port/water passing port is arranged on the main partition board between the sedimentation area and the water outlet area, the integrated sewage treatment device is characterized in that at least one cabin is an A/O area, at least one cabin is the sedimentation area, at least one cabin is the water outlet area, a partition board is arranged in the A/O area, the A/O area is divided into an anoxic pond and an aerobic pond by the partition board along the length direction of the horizontal shell, the overflow port/water passing port is arranged on the partition board, a horizontal aeration device is arranged in the aerobic pond, a partition board is arranged in the length direction of the shell in, the anaerobic section and the anoxic section form an oxidation ditch circulation channel, and the water inlet is positioned in the anaerobic section of the anoxic tank.

2. The integrated sewage treatment equipment of the oxidation ditch and the MBBR of claim 1, wherein the sedimentation zone is divided into a secondary sedimentation tank and a sludge sedimentation tank by a partition plate along the length direction of the horizontal shell, the aerobic tank is communicated with the secondary sedimentation tank by a combined pipeline, the secondary sedimentation tank is communicated with the sludge sedimentation tank by a water communication device, and the sludge sedimentation tank is internally provided with a sludge discharge pipe and a mixed liquid reflux device connected with the anoxic tank.

3. The integrated sewage treatment equipment of oxidation ditch + MBBR of claim 1, wherein the effluent zone is equipped with the division board along horizontal casing length direction department, and the division board divides the effluent zone into filtering ponds and equipment pond, is equipped with fibre membrane reactor and delivery port in the filtering ponds.

4. The integrated sewage treatment equipment of oxidation ditch + MBBR of claim 1, wherein, MBBR packing and/or aeration equipment and/or dive impeller is equipped with in anaerobic section and/or oxygen deficiency section.

5. The integrated sewage treatment equipment of the oxidation ditch and the MBBR of claim 1, wherein a combined pipeline is arranged between the aerobic tank and the secondary sedimentation tank, at least one end of the combined pipeline extends into the aerobic tank, and at least one end of the combined pipeline extends into the middle lower end of the secondary sedimentation tank.

6. The integrated sewage treatment plant of the oxidation ditch + MBBR according to claim 1, wherein the water communication device comprises a connecting pipeline and a sludge pump for connecting the secondary sedimentation tank and the sludge sedimentation tank.

7. The integrated sewage treatment equipment of the oxidation ditch and the MBBR of claim 1, wherein the mixed liquid reflux device is a sludge pump reflux, one end of the reflux pipe extends into the anoxic tank, and the other end of the reflux pipe extends into the sludge sedimentation tank.

8. The integrated sewage treatment equipment of oxidation ditch + MBBR of claim 1, wherein, the fiber membrane reactor mainly includes frame, a plurality of fiber membrane module and outlet pipe, the fiber membrane module includes a plurality of outlet support pipes, the outer surface of outlet support pipe wraps up the filter cloth, the outlet pipe links to each other with the outlet pipe, the outlet pipe stretches into the delivery port.

9. The integrated sewage treatment equipment of oxidation ditch + MBBR of claim 8, wherein, the outlet pipe is provided with an ultraviolet disinfection device.

10. The integrated sewage treatment equipment of oxidation ditch + MBBR of claim 1, wherein, horizontal shell structure is the cuboid, and the material is stainless steel or carbon steel or various synthetic steel.

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