CN219603364U - Sewage treatment device - Google Patents

Abstract

The utility model discloses a sewage processor, which comprises a decomposition tank, wherein the decomposition tank is communicated with a water inlet pipeline and a water outlet pipeline, the water inlet of the water inlet pipeline is higher than the water outlet pipeline, the decomposition tank comprises a first-stage tank, a second-stage tank and a third-stage tank which are arranged at intervals from left to right, the first-stage tank and the second-stage tank are communicated in the middle part and are communicated with each other at a position lower than the liquid level of the first-stage tank, the second-stage tank is communicated with the third-stage tank at the bottom, the water inlet pipeline is communicated with the first-stage tank, the water outlet of the water inlet pipeline is positioned below the liquid level of the first-stage tank, the third-stage tank is provided with biological filler, the water outlet pipeline is communicated with the third-stage tank, and the water outlet pipeline is positioned above the biological filler. The utility model can solve the problems that the sewage processor generates odor and is easy to block during operation.

Description

Sewage treatment device

Technical Field

The utility model belongs to the technical field of sewage treatment, and particularly relates to a sewage treatment device.

Background

In rural areas, the rural areas are built with centralized sewage treatment stations for collecting and treating domestic sewage of villages and villages, but domestic sewage in the rural areas always flows to the sewage treatment stations through sewage ditches at two sides of a road, when the domestic sewage flows through the sewage ditches, the sewage ditches can generate environmental pollution problems such as blackening and stinking, breeding mosquitoes and flies, spreading diseases and the like, and when people pass through the sewage ditches, the blackening and stinking sewage can cause physiological discomfort of people to influence rural environments.

The utility model patent of China with the application number of CN200520130697.0 discloses a household self-flowing domestic sewage purifying treatment device, wherein an anaerobic tank, an aerobic tank and a sedimentation tank are sequentially arranged in the purifying tank, biological filter materials are filled in the anaerobic tank and the aerobic tank, domestic sewage flows through the purifying tank by gravity self-flowing, the purification treatment of the domestic sewage is realized by a biological decomposition mode, the structure is small and simple, the household self-flowing domestic sewage purifying treatment device is suitable for rural families, the treated sewage can be reused, the blackening and odor problems of sewage ditches are reduced, and the rural humanoid environment is improved.

Since the treatment device is used for receiving and treating domestic sewage of a single rural household, the treatment device is installed close to the rural household. However, when domestic sewage is discharged into the treatment device, the domestic sewage can collide with sewage in the anaerobic tank, so that odor diffusion of the domestic sewage is easy to cause, and daily life of people is influenced.

In addition, the impurities in the domestic sewage can block the biological filter materials in the anaerobic tank and the aerobic tank, so that the domestic sewage is difficult to flow to the next treatment tank through the biological filter materials, and people need to continuously treat the impurities on the biological filter materials so as to avoid the blockage of the treatment device, the operation is impossible, and the use is inconvenient.

Disclosure of Invention

The utility model aims to provide a sewage treatment device, which solves the problems that the existing domestic sewage purification treatment device generates odor and is easy to block.

The technical scheme adopted for solving the technical problems is as follows:

the utility model discloses a sewage processor, which comprises a decomposition tank, wherein the decomposition tank is communicated with a water inlet pipeline and a water outlet pipeline, the water inlet of the water inlet pipeline is higher than the water outlet pipeline, the decomposition tank comprises a first-stage tank, a second-stage tank and a third-stage tank which are arranged at intervals from left to right, the first-stage tank and the second-stage tank are communicated in the middle part and are lower than the liquid level of the first-stage tank, the second-stage tank is communicated with the third-stage tank at the bottom, the water inlet pipeline is communicated with the first-stage tank, the water outlet of the water inlet pipeline is positioned below the liquid level of the first-stage tank, the third-stage tank is provided with biological filler, the water outlet pipeline is communicated with the third-stage tank, and the water outlet pipeline is positioned above the biological filler.

The utility model has at least the following beneficial effects: the water outlet of the water inlet pipeline is positioned below the liquid level of the primary tank, domestic sewage can directly flow into the sewage from the lower side of the liquid level of the primary tank through the water inlet pipeline to be subjected to anaerobic decomposition, so that the harm that odor overflows due to inflow from the liquid level and the odor escapes from the sewage due to impact stirring is avoided, meanwhile, the floating slag cover layer of the liquid level of the primary tank is protected, and the floating slag cover layer is not only a place where microorganisms grow and a good film-adhering framework, but also a good facility for adsorbing and decomposing the odor by utilizing scum microorganisms.

After the domestic sewage enters the primary tank and the secondary tank, most of sediment and scum are trapped by the primary tank and the secondary tank, the sediment and scum are reduced to flow to the tertiary tank, the biological filler is blocked, the sediment and scum are also used as places and film-covered frameworks for microorganism growth, the microorganism propagation growth and the solid-liquid mass transfer of pollutants are facilitated, and the organic matter decomposition of the domestic sewage is realized.

Anaerobic decomposition is carried out on the domestic sewage in the first-stage pool, and partial organic matters in the domestic sewage are decomposed and removed; after flowing into the secondary tank, the domestic sewage is subjected to anaerobic decomposition of organic matters in the secondary tank, and the organic matters are continuously digested; after the domestic sewage flows into the three-stage tank, anaerobic and anoxic decomposition is further carried out in the three-stage tank, through the operation, the decomposition tank can remove nitrogen, COD, BOD and other organic matters in the domestic sewage, and the treated effluent is clear and odorless, so that the emission and secondary utilization standards are met.

As a further improvement of the technical scheme, a first water passing port positioned below the liquid level of the primary tank is communicated with one side, close to the primary tank, of the secondary tank. Through the first water gap, the domestic sewage treated by the primary tank flows to the secondary tank, and is decomposed again in the secondary tank, the first water gap is positioned below the liquid level of the primary tank, and scum in the primary tank is reduced to enter the secondary tank.

As a further improvement of the technical scheme, the water inlet pipeline comprises a horizontal first pipe section and an inclined second pipe section, one end of the second pipe section is connected with one end of the first pipe section, and the other end of the second pipe section extends to the position below the liquid level of the primary tank.

By the arrangement, the sewage flow rate in the water inlet pipeline can be slowed down, so that domestic sewage discharged by the water inlet pipeline is further slowed down to collide with sewage in the primary pond, and the gas volatilization of the odor compound is reduced.

As a further improvement of the technical scheme, a second water passing port is arranged on one side, close to each other, of the secondary tank and the tertiary tank in a conducting mode. Through the second water passing port, domestic sewage automatically flows from the second tank to the third tank, and is adsorbed and degraded in the third tank by microorganisms attached to the biological filter material.

As a further improvement of the above technical solution, the biological filler is higher than the second water passing port. Sewage flowing to the three-stage pond can flow through the biological filler, is adsorbed and degraded by microorganisms on the biological filler, realizes further treatment and decomposition of the sewage, and is discharged out of the water outlet pipeline.

As a further improvement of the technical scheme, the first water passing port and the second water passing port are arranged in a front-back staggered mode.

The sewage can stay in the primary tank and the secondary tank for a long time, so that the sewage is ensured to have enough degradation time, and the treatment effect of the sewage in the sewage processor is improved.

As a further improvement of the above technical solution, the water outlet conduit extends in a horizontal direction.

Through the arrangement, when the sewage liquid level in the three-stage pond overflows the water outlet pipeline, sewage in the three-stage pond is directly discharged out of the sewage processor through the water outlet pipeline, and treated sewage automatically flows out of the water outlet pipeline.

As a further improvement of the technical scheme, a bracket is arranged in the middle of the three-stage pool, and the biological filler is arranged on the bracket. The biological stuffing is supported and fixed in the three-stage pond through the bracket.

As a further improvement of the technical scheme, the biological filler is a porous hollow plastic filler. The porous hollow plastic filler has light weight, small pressure on the bracket, long-term bearing of the bracket and difficult crushing, and has large specific surface area, is convenient for microorganism adhesion film formation, propagation and growth, can contain more microorganisms in unit area, has small resistance for solid-liquid mass transfer of pollutants and improves the sewage treatment efficiency.

As a further improvement of the technical scheme, a plurality of sealing cover plates are arranged above the decomposition tank, and the sealing cover plates are respectively covered on the primary tank, the secondary tank and the tertiary tank.

Through sealed apron, prevent that mosquitos and flies from getting into and out sewage treatment ware, prevent that mosquitos and flies from breeding, spread the disease, can also prevent the odor diffusion, avoid the odor to influence people's normal life.

Drawings

The utility model is further described below with reference to the drawings and examples;

FIG. 1 is a top view of an embodiment of the present utility model;

FIG. 2 is a front cross-sectional view provided by an embodiment of the present utility model;

FIG. 3 is a cross-sectional view A-A of FIG. 2;

FIG. 4 is a B-B cross-sectional view of FIG. 2;

FIG. 5 is a cross-sectional view of C-C of FIG. 2;

fig. 6 is a D-D cross-sectional view of fig. 2.

The figures are marked as follows:

100. a sewage treatment device;

200. a water inlet pipe;

300. a water outlet pipe;

410. a first-level pool; 420. a secondary pool; 430. a third-level pool; 510. a first water passing port; 520. a second water passing port; 530. a biological filler;

600. sealing the cover plate; 610. a handle.

Detailed Description

Reference will now be made in detail to the present embodiments of the present utility model, examples of which are illustrated in the accompanying drawings, wherein the accompanying drawings are used to supplement the description of the written description so that one can intuitively and intuitively understand each technical feature and overall technical scheme of the present utility model, but not to limit the scope of the present utility model.

In the description of the present utility model, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present utility model and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, if there is a word description such as "a plurality" or the like, the meaning of the plurality is one or more, the meaning of the plurality is two or more, and greater than, less than, exceeding, etc. are understood to exclude the present number, and above, below, within, etc. are understood to include the present number. The description of first, second, and third is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of technical features indicated.

It should be noted that, in the drawing, the X direction is from the rear side to the front side of the sewage treatment device; the Y direction is from the left side to the right side of the sewage treatment device; the Z direction is from the lower side to the upper side of the sewage treatment device.

In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.

Referring to fig. 1 to 6, several embodiments of the sewage treatment apparatus of the present utility model are described below.

As shown in fig. 1 to 6, the sewage treatment apparatus 100 according to the embodiment of the present utility model includes a decomposition tank, a water inlet pipe 200 and a water outlet pipe 300, wherein the water inlet pipe 200 and the water outlet pipe 300 are all connected to the decomposition tank, domestic sewage of a rural household can flow into the decomposition tank through the water inlet pipe 200, be decomposed by the decomposition tank, eliminate organic matters, insect eggs and volatile odor in the domestic sewage, and be discharged from the decomposition tank through the water outlet pipe 300, thereby realizing autonomous treatment of domestic sewage of a rural household.

It can be understood that the sewage processor 100 is built underground or nearby the rural families of each family, the buried design is adopted, the sewage processor 100 is prevented from being excessively large in volume and affecting the living area of the rural families, and the sewage processor 100 is built underground, so that the generated domestic sewage can be ensured to automatically flow to the sewage processor 100 under the action of gravity, and the operation of power equipment is not required; the sewage treatment apparatus 100 is integrally provided, so that the installation steps are saved, and the sealing waterproofness of the sewage treatment apparatus 100 is improved.

It can be understood that the treated sewage is clear and odorless, the treated sewage can be reused and applied to irrigation or is gathered into a sewage ditch of a village, and then flows into a centralized sewage treatment station constructed in the village to be gathered into a river after being treated uniformly, so that the pollution problems of blackening and stinking, breeding of mosquitoes and flies, spreading of diseases and the like in the sewage ditch of the village are solved from the source.

It will be appreciated that the inlet conduit 200 has a higher inlet than the outlet conduit 300, as shown in figures 1 and 4. Domestic sewage automatically flows under the action of gravity in the decomposing tank, automatically flows out through the water outlet pipeline 300 after being treated, does not need power equipment, personnel management and running cost, and is simple to use.

It can be understood that the decomposing tank comprises a first tank 410, a second tank 420 and a third tank 430 which are sequentially arranged from left to right, as shown in fig. 2, 5 and 6, the first tank 410 and the second tank 420 are arranged at intervals and are communicated with each other, the second tank 420 and the third tank 430 are arranged at intervals and are communicated with each other, the water inlet pipeline 200 is communicated with the first tank 410, the water outlet pipeline 300 is communicated with the third tank 430, biological fillers 530 are further arranged in the third tank 430, after the domestic sewage enters the decomposing tank from the water inlet pipeline 200, the domestic sewage can sequentially flow through the first tank 410, the second tank 420 and the third tank 430, and after the domestic sewage passes through the biological fillers 530 of the third tank 430, the domestic sewage flows out of the decomposing tank from the water outlet pipeline 300, so that the domestic sewage is treated and discharged.

It will be appreciated that the water inlet pipe 200 includes a water inlet and a water outlet which are in communication with each other, and that the water inlet of the water inlet pipe 200 is higher than the water outlet thereof, so that domestic sewage can gravity flow into the primary pond 410, as shown in fig. 3.

Further, the water outlet of the water inlet pipe 200 is located below the liquid surface of the primary tank 410, as shown in fig. 3. Because domestic sewage contains volatile foreign odor gas such as hydrogen sulfide, if domestic sewage directly flows to the liquid level of the primary tank 410, the water level difference can cause strong turning of water flow in the primary tank 410, and the foreign odor gas can be dispersed, and because the sewage processor 100 is built beside a rural family, the foreign odor can be dispersed into the rural family, and the normal life of people is affected.

It can be appreciated that when domestic sewage enters from the water inlet pipeline 200, the domestic sewage can directly flow into the position below the liquid level of the primary tank 410, so that only the liquid level in the primary tank 410 is changed, the possibility of water flow turning is reduced, and the volatilization of gas is reduced. Also, in the primary tank 410, the gas of bad smell is accumulated above the liquid surface of the primary tank 410 and is not easily emitted through the water inlet pipe 200.

In this embodiment, the water inlet of the water inlet pipe 200 is communicated with the drainage pipe of rural domestic sewage, and one end of the water inlet pipe 200, which is close to the water inlet, horizontally extends and is penetrated and fixed on the rear side surface of the sewage processor 100.

Further, the water inlet pipe 200 includes a horizontal first pipe section and an inclined second pipe section, the upper end of the second pipe section is connected to one end of the first pipe section, and the lower end of the second pipe section extends downward and obliquely below the liquid surface of the primary tank 410. Specifically, on the left-right projection, the first pipe section is fixed to the rear end surface of the primary tank 410, the front end of the first pipe section is connected to the upper end of the second pipe, and the second pipe section extends obliquely downward and forward from the upper end thereof.

It is understood that, first pipeline section and second pipeline section can slow down the velocity of flow of the domestic sewage that flows through, horizontal first pipeline section slows down at first and discharges domestic sewage velocity of flow, the second pipeline section is used for slowing down the velocity of flow that the water head caused too fast and rivers turn, make sewage slowly flow into one-level pond 410 in, prevent that the velocity of flow is too fast, result in the domestic sewage of discharging to take place to turn strongly with the sewage in one-level pond 410, and, the noise of sewage can also be reduced to the second pipeline section of slope, prevent that the inflow noise of sewage is too big, influence people's normal rest.

It will be appreciated that the water outlet conduit 300 extends in a horizontal direction as shown in fig. 4. Specifically, the front end of the water outlet pipe 300 is communicated with the three-stage tank 430, and the water outlet pipe 300 is fixed to the rear end surface of the sewage treatment apparatus 100.

The inlet of the inlet pipe 200 is higher than the outlet pipe 300. Specifically, the water outlet pipeline 300 is lower than the water inlet of the water inlet pipeline 200 and higher than the water outlet of the water inlet pipeline 200, and the primary tank 410 is communicated with the secondary tank 420, and the secondary tank 420 is communicated with the tertiary tank 430, so that the liquid level of the primary tank 410 can be ensured to be always lower than that of the water outlet pipeline 300, the liquid level of the primary tank 410 can be ensured to be lower than that of the water inlet pipeline 200, domestic sewage generated by rural families can always flow to the sewage processor 100, the liquid level of the primary tank 410 can be ensured to be higher than the water outlet of the water inlet pipeline 200, and odor billowing is prevented, as shown in fig. 2 and 4.

In this embodiment, the conducting position of the secondary tank 420 and the tertiary tank 430 is located below the biological filler 530, and the water outlet pipeline 300 is located above the biological filler 530, so as to ensure that the sewage flowing from the secondary tank 420 to the tertiary tank 430 flows through the biological filler 530, is subjected to anaerobic and anoxic treatment by the microorganisms attached to the biological filler 530, and flows out of the water outlet pipeline 300, so as to prevent the sewage from remaining with more organic matter concentration, as shown in fig. 4.

It will be appreciated that the first water passing port 510 is provided on a side of the primary tank 410 and the secondary tank 420, which are close to each other, and specifically, the first water passing port 510 extends in the left-right direction and is provided on a right side surface of the primary tank 410 and a left side surface of the secondary tank 420, respectively, as shown in fig. 2 and 3.

Further, the first water passing port 510 is disposed at the middle of the primary tank 410 and the secondary tank 420, specifically, the first water passing port 510 is disposed at the middle of the up-down position of the primary tank 410 when seen in the left-right direction, the first water passing port 510 is also disposed at the middle of the up-down position of the secondary tank 420, and the height position of the first water passing port 510 is lower than the liquid level of the primary tank 410, as shown in fig. 2 and 3.

It will be appreciated that when the domestic sewage is discharged from the water inlet pipeline 200, the sediment in the domestic sewage is deposited at the bottom of the first-stage tank 410, the scum in the domestic sewage floats up and stays at the upper liquid level of the first-stage tank 410, and most of the organic particles, oils, scum and sediment in the domestic sewage are trapped in the first-stage tank 410, and because the first water passing port 510 is positioned below the liquid level of the first-stage tank 410, most of the scum and sediment cannot flow into the second-stage tank 420 through the first water passing port 510, so that the first water passing port 510 is prevented from being blocked.

It will be appreciated that most of the sediment and scum in the domestic sewage is trapped in the primary tank 410, and the sediment and scum serve as a filler to become a place and a membrane skeleton for microorganism growth, so that the microorganism can be propagated and grown, the domestic sewage undergoes anaerobic decomposition in the primary tank 410 in the first stage, oxygen is not needed, the energy consumption is reduced, and organic pollutants can be converted into biogas, and villagers can recycle the biogas, so that energy is saved.

In this embodiment, the first water passing port 510 is square in shape when viewed in the left-right direction, and the rear side of the first water passing port 510 coincides with the rear inner side wall of the decomposition tank, as shown in fig. 3.

It is understood that the first water passing port 510 is lower than the water inlet of the water inlet pipe 200. When domestic sewage enters the primary tank 410 through the water inlet pipeline 200, the liquid level of the primary tank 410 is raised, and the air pressure in the decomposition tank is balanced, so that the sewage in the primary tank 410 automatically flows towards the secondary tank 420 and the tertiary tank 430 by the air pressure, and the liquid level in the primary tank 410, the secondary tank 420 and the tertiary tank 430 is kept stable. The first water passing port 510 is lower than the water outlet pipe 300.

It will be appreciated that the sewage in the primary tank 410 flows into the secondary tank 420 through the first water passing port 510, while most of the scum and sediment is trapped by the primary tank 410, a small amount of scum and sediment still enters the secondary tank 420 through the first water passing port 510, the sewage continues to suspend and sediment in the secondary tank 420, the scum and sediment in the sewage are further trapped, the scum and sediment in the secondary tank 420 also serve as a skeleton for the growth of microorganisms, the sewage undergoes anaerobic decomposition in the secondary tank 420, and the microorganisms adsorb and degrade organic matters in the sewage.

It can be appreciated that the residence time of the sewage in the primary tank 410 and the secondary tank 420 is long, which is favorable for the full decomposition of organic matters and greatly improves the biodegradation effect of organic pollutants in the sewage.

It is understood that the secondary tank 420 and the tertiary tank 430 are conductively connected by a second water passing port 520. Specifically, the second water passing port 520 extends in the left-right direction and is communicated with the right side surface of the secondary tank 420 and the left side surface of the tertiary tank 430, respectively, as shown in fig. 4 and 6.

It can be appreciated that, since the secondary tank 420 and the tertiary tank 430 are communicated at the bottom, that is, the second water passing port 520 is located at the bottom of the decomposition tank, in this embodiment, the second water passing port 520 is square-shaped when viewed in the left-right direction, and the front side of the second water passing port 520 coincides with the front inner side wall of the decomposition tank, as shown in fig. 4.

It can be appreciated that the first water passing port 510 and the second water passing port 520 are arranged in a front-back staggered manner, as shown in fig. 5 and 6, so that sewage is prevented from flowing from the primary tank 410 to the secondary tank 420 and then directly flows from the secondary tank 420 to the tertiary tank 430, sufficient biodegradation reaction time is provided for the sewage, the concentration of organic matters in the sewage is ensured to be further reduced in the secondary tank 420, the sewage treatment effect is ensured, meanwhile, scum and sediment in the sewage can be trapped in the secondary tank 420, and the content of scum and sediment in the sewage in the tertiary tank 430 is reduced.

It will be appreciated that the domestic sewage contains a large amount of scum, sediment and oil substances, and the sewage can also generate sediment in the microbial treatment process, and these substances are very likely to cause the sewage treatment device 100 to have a blockage problem, so that the sewage treatment device 100 cannot operate normally.

It will be appreciated that since the domestic sewage flows into the primary tank 410 and then flows into the secondary tank 420 through the first water passing port 510, the first water passing port 510 is smaller than the second water passing port 520, so that a large amount of sediment and scum is trapped in the primary tank 410, the amount of sediment and scum flowing into the secondary tank 420 is reduced, and the possibility that the biological packing 530 is clogged is reduced. In the present embodiment, the length of the first water passing port 510 is half of the length of the second water passing port 520.

It will be appreciated that since the second water passing port 520 is located at the bottom of the side of the secondary tank 420 and the tertiary tank 430 close to each other, in order to ensure that sewage can flow through the bio-filler 530 in the tertiary tank 430, the bio-filler 530 is disposed at a higher level than the second water passing port 520. Specifically, the bio-filler 530 is located above the second water passing port 520 as viewed in the left-right direction; the area of the bio-filler 530 is equal to the cross-sectional area of the tertiary tank 430 in the up-down direction, and sewage flows through the bio-filler 530 in the tertiary tank 430, is biodegraded by the bio-filler 530, and then flows out of the water outlet pipeline 300.

It will be appreciated that the middle part of the tertiary tank 430 is provided with a bracket for firmly supporting the bio-packing 530, fixing the bio-packing 530 at the middle part of the tertiary tank 430, and since the water outlet pipe 300 is positioned above the bio-packing 530, the sewage passing through the second water outlet 520 moves upward, passes through the bio-packing 530, and is discharged from the water outlet pipe 300 out of the sewage processor 100.

It can be appreciated that the bio-filler 530 has the advantages of large specific surface area, light weight, high strength, corrosion resistance and the like, and is used as a carrier of microbial film formation to improve the specific surface area of microbial mass and solid-liquid mass transfer, when sewage flows through the bio-filler 530, the bio-filler 530 is fluffy, the bio-filler 530 can increase the contact area between the sewage and the microbes, and is not easy to generate blockage, so that the purification effect of the microbes on the sewage is improved, and the sewage is subjected to the anaerobic and anoxic decomposition of the third stage in the third-stage pond 430.

It is understood that the biologic filler 530 includes a variety of honeycomb diagonal tube fillers, synthetic fiber spheres, fiber bundles, biologic ribbons, ropes, and the like. In this embodiment, the bio-filler 530 is a porous hollow plastic filler, which has light weight and small pressure on the stent, and is not easy to deform and crush when the stent bears the bio-filler 530 for a long time.

It will be appreciated that, since the decomposing tank includes the primary tank 410, the secondary tank 420 and the tertiary tank 430, three sealing cover plates 600 are provided above the decomposing tank, and the three sealing cover plates 600 are respectively covered on the primary tank 410, the secondary tank 420 and the tertiary tank 430, and one end of the sealing cover plate 600 is hinged to the decomposing tank along the axis extending back and forth, so that people can rotate to open the sealing cover plate 600, as shown in fig. 1.

It can be appreciated that the sealing cover plate 600 is sealed above the primary tank 410, the secondary tank 420 and the tertiary tank 430, so that leakage of odor, biogas and other gases is reduced, and odor diffusion or explosion under fire is prevented.

It will be appreciated that one can open the sealing cover 600 to salvage excessive scum and sediment from the decomposition tank, thereby ensuring that the scum and sediment in the decomposition tank are sufficiently propagated and developed without causing clogging of the decomposition tank.

It will be appreciated that the sealing cover 600 is provided with a handle 610 to facilitate the opening or closing of the sealing cover 600. The sealing cover plate 600 is also provided with a valve, so that ventilation is convenient before opening, the internal and external air pressures of the sewage treatment device 100 are the same, and the sealing cover plate 600 is easier to open.

While the preferred embodiment of the present utility model has been described in detail, the utility model is not limited to the embodiments, and various equivalent modifications and substitutions can be made by those skilled in the art without departing from the spirit of the utility model, and these modifications and substitutions are intended to be included in the scope of the present utility model as defined in the appended claims.

Claims (10)

1. The utility model provides a sewage treatment ware, includes the decomposition pond, decomposition pond intercommunication has inlet channel and outlet conduit, inlet channel's water inlet is higher than outlet conduit, its characterized in that, the decomposition pond includes from left to right interval setting's one-level pond, second grade pond and tertiary pond, one-level pond and second grade pond are in middle part intercommunication and its intercommunication department is less than the liquid level in one-level pond, second grade pond and tertiary pond are in the bottom intercommunication, inlet channel intercommunication one-level pond, inlet channel's delivery port is located the liquid level below in one-level pond, biological filler is installed in the tertiary pond, outlet conduit intercommunication tertiary pond, just outlet conduit is located biological filler's top.

2. The sewage treatment apparatus according to claim 1, wherein a side of the primary tank and the secondary tank which are close to each other is provided with a first water passing port located below a liquid surface of the primary tank in a conducting manner.

3. The wastewater treatment apparatus of claim 1, wherein the water inlet conduit comprises a first horizontal section and a second inclined section, one end of the second section being connected to one end of the first section, the other end of the second section extending below the surface of the primary tank.

4. The sewage processor according to claim 2, wherein a second water passing port is provided in communication with a side of the secondary tank and the tertiary tank which are adjacent to each other.

5. The wastewater processor of claim 4, wherein the biological packing is higher than the second water gap.

6. The wastewater treatment device of claim 5, wherein the first water passing port and the second water passing port are arranged in a staggered manner.

7. The wastewater treatment facility of claim 1, wherein the water outlet conduit extends in a horizontal direction.

8. The sewage processor of claim 1, wherein a bracket is arranged in the middle of the tertiary tank, and the biological filler is arranged on the bracket.

9. The wastewater treatment facility of claim 8, wherein the biological filler is a porous hollow plastic filler.

10. The sewage processor of claim 1, wherein a plurality of sealing cover plates are arranged above the decomposing tank, and the plurality of sealing cover plates are respectively covered on the primary tank, the secondary tank and the tertiary tank.