CN209940783U - Sectional countercurrent aeration without excess sludge sewage treatment device - Google Patents

Abstract

The utility model relates to a segmentation aeration does not have excess sludge sewage treatment plant against current, which comprises a housin, the filler, the sewage water inlet, the purified water delivery port, a plurality of aerators and intake pipe, a serial communication port, be equipped with the wall in the casing, the wall separates into segmentation aeration biochemical pond and sedimentation tank against current with the casing, upper portion is equipped with hanging breakwater in segmentation aeration biochemical pond against current, the lower part is equipped with more than one and hanging breakwater staggered arrangement's console mode breakwater, its hanging breakwater divide into aeration section and contact segment with segmentation aeration biochemical pond against current, its console mode breakwater separates segmentation aeration biochemical pond into multiunit aeration section and contact segment against current, the aerator sets up the aeration section lower part in segmentation aeration biochemical pond against current, be equipped with hanging breakwater and mud reflux system at the sedimentation tank. The utility model discloses simple structure reduces the aeration rate, reaches air water intensive mixing, prolongs the mixing time, reduces the energy consumption, goes out no excess sludge of water, saves the cost.

Description

Sectional countercurrent aeration without excess sludge sewage treatment device

technical field

The utility model belongs to the technical field of sewage treatment, in particular to a section type countercurrent aeration sewage treatment device without excess sludge.

Background technique

Sewage usually refers to water bodies that are polluted to a certain extent, and sewage generally comes from wastewater discharged from life and production. Sewage treatment device is an industrial equipment that treats domestic sewage, industrial wastewater, etc. It prevents sewage and pollutants from directly flowing into the water area, which is of great significance to improving the ecological environment and promoting economic development; sewage treatment equipment is widely used in environmental protection, energy, medical , industry, catering and other fields. The traditional sewage treatment device mainly includes sedimentation tank, aeration biochemical tank, filter tank, water inlet pipe, drain pipe and connecting pipe. The filler is conducive to the attachment of biological bacteria and helps to improve the effect of water treatment. The direction of water flow is parallel to the bottom of the pool, the direction of aeration is perpendicular to the direction of water flow, the sewage and gas cannot be fully contacted, the contact time of aeration is short, the required aeration amount is large, and the energy consumption is high; after sewage treatment, a large amount of sludge is generated, and the sludge needs Corresponding treatment is carried out, otherwise it cannot be discharged, and the pollutants discharged at will will enter the soil, surface water and groundwater bodies and cause secondary pollution. Arbitrary stacking of sludge will damage the environment, emit foul gas, and odor will affect the normal life of human beings. The follow-up of sludge The processing is difficult and the cost is high.

SUMMARY OF THE INVENTION

The purpose of the utility model is to provide a section type countercurrent aeration and no excess sludge sewage treatment device with low energy consumption, no sludge in the effluent, and no need for cleaning.

The purpose of this utility model is achieved in this way.

The utility model relates to a section type countercurrent aeration and no excess sludge sewage treatment device, which comprises a casing, a filler, a sewage water inlet, a purified water outlet, a plurality of aerators and an air inlet pipe connected with the aerators. The casing is a box structure composed of a bottom plate, a surrounding vertical plate and an upper cover. It is characterized in that a partition is arranged in the casing, and the partition divides the casing into two independent adjacent left and right. The segmental counter-current aeration biochemical tank and sedimentation tank are provided with a sedimentation tank inlet in the middle and upper part of the partition, so that the segmental counter-current aeration biochemical tank is connected with the sedimentation tank, and the sewage inlet is set in the segmental counter-current aeration biochemical tank. There is a water distributor at the left sewage inlet in the segmental counter-current aeration biochemical tank, and a water collector I is provided at the right-side sedimentation water inlet in the segmental counter-current aeration biochemical tank. The upper part of the counter-current aeration biochemical tank is provided with more than one hanging water baffle, and the hanging water blocking plate divides the segmental counter-current aeration biochemical tank into an aeration section and a contact section. There is one or more floor-standing water baffles staggered with the hanging water baffles, and the floor-standing water baffles divide the segmental counter-current aeration biochemical tank into multiple groups of aeration sections and contact sections. It is arranged in the lower part of the aeration section of the segmental countercurrent aeration biochemical tank, the filler is arranged in the middle of the segmental countercurrent aeration biochemical tank, and more than one hanging water baffle is also provided on the upper part of the sedimentation tank. There is a sludge return system. The sludge return system consists of a return pump and a sludge return pipe. The return pump is arranged at the bottom of the sedimentation tank. One end of the sludge return pipe is connected with the sludge return pump, and the other end is connected from the sludge return pump. The upper part of the segmental countercurrent aeration biochemical tank is inserted and led to the water distributor.

As a further optimization of the present utility model, the hanging water retaining plate is arranged perpendicular to the upper cover of the casing, the top end is connected to the upper cover of the casing, and the bottom end is respectively higher than the section type countercurrent aeration biochemical tank and sedimentation tank of the casing. The floor-standing baffle is installed perpendicular to the bottom plate of the segmental counter-current aeration biochemical tank of the shell, and is set lower than the upper cover of the shell, so that the water flow forms a U-shaped flow from top to bottom and then bottom to top. type trajectory.

As a further optimization of the present invention, the bottom of the sedimentation tank is funnel-shaped.

As a further optimization of the present invention, the water distributor is an L-shaped water guide plate whose one end is fixedly connected to the inner side of the segmental countercurrent aeration biochemical tank.

As a further optimization of the present invention, on the right side of the sedimentation tank, a water collector II is arranged at the water outlet of the purified water, and the water collector I and the water collector II are both L-shaped water guide plates.

The advantages of the present utility model are:

1) Since the aerator is arranged at the lower part of the aeration section of the segmental countercurrent aeration biochemical tank, the contact section is not provided with the aerator, and a segmental aeration is formed in the pool, and the direction of the water flow in the aeration section is from top to bottom, Contrary to the aeration direction, the sewage is countercurrently aerated in the aeration section, so that the gas and water are fully mixed, reducing the amount of aeration, reducing energy consumption and saving costs;

2) Since the utility model is provided with hanging water baffles in both the segmental counter-current aeration biochemical tank and the sedimentation tank, and a floor-standing baffle is also set in the segmental counter-current aeration biochemical tank, the water flow is formed from top to bottom. In the U-shaped trajectory from the bottom to the top, the gas and water continue to contact in the contact section, prolonging the reaction time, the sewage reaches the biochemical effect through the aeration section and the filler in the contact section, and the microorganisms digest and decompose the sludge;

3) Since the utility model is provided with a sludge return system in the sedimentation tank, the sedimented sludge in the sedimentation tank is pumped to the front end of the shell by the return pump and reacted in the aeration section and the contact section again. The return system is cyclically digested and decomposed to achieve no excess sludge and save costs.

Description of drawings

Figure 1 is a schematic structural diagram of the utility model.

Detailed ways

The utility model will be further described below in conjunction with the accompanying drawings.

As shown in FIG. 1 , a section type countercurrent aeration and no excess sludge sewage treatment device of the present invention includes a casing, a filler 9, a sewage inlet 1, a purified water outlet 14, a plurality of aerators 6 and The air intake pipe 5 connected to the aerator 6, the casing is a box structure composed of a bottom plate, a surrounding vertical plate and an upper cover, and is characterized in that a partition 4 is arranged in the casing, and the The partition 4 separates the shell into two independent segmental countercurrent aeration biochemical tanks and sedimentation tanks 13 adjacent to the left and right, and a sedimentation tank water inlet 17 is opened in the upper middle of the partition 4, so that the segmental countercurrent aeration biochemical tank and the sedimentation tank are opened. The sedimentation tank is connected, the sewage inlet 1 is arranged in the upper left middle and upper part of the section counter-current aeration biochemical tank, and a water distributor 2 is arranged at the left sewage inlet 1 in the section counter-current aeration biochemical tank. There is a water collector I10 at the water inlet 17 of the sedimentation tank on the right side of the aeration biochemical tank, and there is more than one hanging water baffle 7 in the upper part of the section type countercurrent aeration biochemical tank. The counter-current aeration biochemical tank is divided into an aeration section 3-1 and a contact section 3-2, and at the lower part of the section-type counter-current aeration biochemical tank there is one or more floor-standing water baffles 8 arranged staggered with the hanging water baffles 7 , and its floor-standing water baffle 8 divides the segmental counter-current aeration biochemical tank into multiple groups of aeration sections and contact sections;

The utility model can design the size of the shell according to the different water volume, the corresponding aeration section 3-1 and the contact section 3-2 can be appropriately increased in number of groups, and each group of aeration sections 3 -1 and contact section 3-2, the hanging water baffle 7 is arranged perpendicular to the upper cover of the shell, the top end is connected to the upper cover of the shell, and the bottom end is respectively higher than the section type countercurrent aeration biochemical tank of the shell and The bottom plate of the sedimentation tank 13 is installed; the floor-standing baffle 8 is installed perpendicular to the bottom plate of the segmental counter-current aeration biochemical tank of the shell, and is set lower than the upper cover of the shell, and the aerator 6 is disposed at In the lower part of the aeration section of the segmental countercurrent aeration biochemical tank, a group of aeration sections 3-1 and contact sections 3-2 correspond to a group of aerators 6. The number of aerators in each group is determined according to the water volume and pollution conditions. The filler 9 is arranged in the middle of the section-type countercurrent aeration biochemical tank, the sewage enters from the sewage inlet 1 at the left end of the shell, and is adjusted by the water distributor 2 to enter the first aeration section 3-1, and the air inlet pipe 5 is installed vertically. The aeration section 3-1 is equipped with an aerator 6. The water flow in the aeration section runs from top to bottom under the action of the hanging water baffle 7, and the gas direction forms a countercurrent aeration from bottom to top, as indicated by the arrow in the figure. It is shown that the countercurrent aeration of sewage in the aeration section makes the gas and water fully mix, which not only reduces the amount of aeration, but also reduces energy consumption.

In addition, because there is a filler in the aeration section, the filler not only acts as a carrier for biological bacteria, but also plays a good role in water distribution and air distribution.

After passing through the aeration section 3-1, the sewage is bent into the first contact section 3-2, and the gas and water continue to react, prolonging the reaction time. The contact section 3-2 is also provided with fillers, which not only serve as the carrier of the biological bacteria, but also play the role of In order to achieve good water distribution and air distribution; the sewage purified by the first contact section 3-2 flows into the second aeration section 3-1 and the second contact section 3-2 through the upper part of the floor-mounted baffle 8, and the sewage flows into the second aeration section 3-1 and the second contact section 3-2. Under the action of the aeration section, the contact section and the filler, the biochemical reaction continues, and the microorganisms digest and decompose the sludge.

In the present invention, one or more hanging water baffles 7 are also arranged on the upper part of the sedimentation tank 13 according to the difference of the treated water volume, and a sludge return system is also arranged in the sedimentation tank. The sludge return system consists of the return pump 11 and the It is composed of a sludge return pipe 12, the return pump 11 is arranged at the bottom of the sedimentation tank, one end of the sludge return pipe 12 is connected with the sludge return pump, and the other end of the sludge return pipe 12 is inserted from the upper part of the segmental countercurrent aeration biochemical tank Lead to water distributor 2. The bottom of the sedimentation tank 13 is a funnel-shaped 16, and the number of funnel-shaped design groups should be set according to the number of hanging water baffles.

The utility model is provided with a water collector II15 in the upper part of the sedimentation tank 13 and the purified water outlet 14 on the right side. The water collector I10 and the water collector II15 are both L-shaped water guide plates. The fully reacted sewage enters the sedimentation section through the water collector I10. The hanging water baffles 7 set in the sedimentation tank can be appropriately increased according to the amount of water. The bottom of the sedimentation tank is designed to be funnel-shaped, and the number of funnel-shaped design groups should be The number of hanging baffles is set the same. The sludge is pumped along the return pipe to the water distributor in the aeration section through the return pump, and the micro-sludge produced in the process of sewage treatment is cyclically digested and decomposed after being processed by the return system. No excess sludge is realized; the purified water in the sedimentation tank is collected by the upper water collector II15 and flows out along the purified water outlet 14 at the right end of the shell.

The utility model has the advantages of simple structure, reduced aeration amount, full mixing of gas and water, prolonged mixing time, reduced energy consumption, no excess sludge in effluent, and cost saving.

Claims (5)

1. A section type counter-current aeration sewage treatment device without excess sludge, comprising a casing, a filler, a sewage water inlet, a purified water outlet, a plurality of aerators and an air intake pipe connected to the aerators, the described The shell is a box structure composed of a bottom plate, surrounding vertical plates and an upper cover. Type counter-current aeration biochemical tank and sedimentation tank, there is a sedimentation tank inlet in the middle and upper part of the partition, so that the section type counter-current aeration biochemical tank is connected with the sedimentation tank, and the sewage inlet is set on the left side of the section type counter-current aeration biochemical tank. In the middle and upper part of the side, there is a water distributor at the left sewage inlet in the segmental countercurrent aeration biochemical tank, and a water collector I is provided at the water inlet of the right sedimentation in the segmental countercurrent aeration biochemical tank. The upper part of the aeration biochemical tank is provided with more than one hanging water baffle. One or more floor-standing water baffles arranged alternately with the hanging water baffles, the floor-standing water baffles divide the segmental counter-current aeration biochemical tank into multiple groups of aeration sections and contact sections, and the aerators are arranged in In the lower part of the aeration section of the segmental countercurrent aeration biochemical tank, there is also one or more hanging water baffles in the upper part of the sedimentation tank. The filler is arranged in the middle of the segmental countercurrent aeration biochemical tank. There is a sludge return system. The sludge return system consists of a return pump and a sludge return pipe. The return pump is arranged at the bottom of the sedimentation tank. One end of the sludge return pipe is connected to the sludge return pump. The sludge return pipe The other end is inserted from the upper part of the section counter-current aeration biochemical tank and led to the water distributor. 2. The segmental counter-current aeration-free sludge-free sewage treatment device according to claim 1, wherein the hanging water baffle is arranged perpendicular to the upper cover of the casing, and the top end is connected to the upper cover of the casing, The bottom ends are respectively set higher than the bottom plate of the segmental countercurrent aeration biochemical tank and the sedimentation tank of the shell; Top cover setting. 3 . The section-type countercurrent aeration non-excess sludge sewage treatment device according to claim 1 , wherein the bottom of the sedimentation tank is funnel-shaped. 4 . 4. The segmental counter-current aeration-free sludge-free sewage treatment device according to claim 1, wherein the water distributor is an L-shaped water guide whose one end is fixedly connected to the inner side of the segmental counter-current aeration biochemical tank plate. 5. The segmental counter-current aeration-free sludge-free sewage treatment device according to claim 1, characterized in that, on the right side of the sedimentation tank, a water collector II is arranged at the water outlet of the purified water, and the Both the water collector I and the water collector II are L-shaped water guide plates.

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