CN211921024U

CN211921024U - Sewage treatment device

Info

Publication number: CN211921024U
Application number: CN201922168890.8U
Authority: CN
Inventors: 靖朝森; 张威振; 邵婷; 郑正
Original assignee: Shanghai Fushen Environmental Technology Development Co ltd
Current assignee: Shanghai Fushen Environmental Technology Development Co ltd
Priority date: 2019-12-06
Filing date: 2019-12-06
Publication date: 2020-11-13
Anticipated expiration: 2029-12-06

Abstract

The utility model discloses a sewage treatment device, including biochemical treatment system, ecological filter system, heating system, energy supply system and heat preservation canopy, biochemical treatment system passes through microorganism purification sewage, and biochemical treatment system connects the inlet tube, is equipped with the filter layer that filters sewage in the ecological filter system, and ecological filter system and biochemical treatment system are connected, and ecological filter system is connected with the outlet pipe, and heating system includes heater and heater. This sewage treatment plant, sewage is in proper order through biochemical treatment system and ecological filter system, guarantees the sewage treatment effect, and the thermal-insulation shed plays the heat preservation effect, and when ambient temperature is lower, the environment temperature that the heat supply can guarantee in the thermal-insulation shed is suitable, and the water temperature that the heater can guarantee among the biochemical treatment system is suitable to make the microorganism purify sewage under higher activity, this device still can high-efficiently stably handle sewage under the lower circumstances of ambient temperature, this utility model is used for sewage treatment technical field.

Description

Sewage treatment device

Technical Field

The utility model relates to a sewage treatment technical field especially relates to a sewage treatment device.

Background

With the development of rural social economy and the popularization of tap water, the daily water consumption and sewage discharge amount per capita in rural areas are increased rapidly, a large amount of domestic sewage is generated, the increasing threat to rural water environment is formed, and the treatment problem of rural domestic sewage is increasingly obvious.

At present, aiming at the treatment of rural domestic sewage and black and odorous water, the following methods are mainly adopted: an artificial wetland treatment system, an anaerobic-anoxic-aerobic (A2/O) combined process, an MBR process technology, a purification tank process, a stabilization pond treatment system and the like. The above systems have various characteristics and also have certain limitations:

(1) the artificial wetland treatment system is a natural wetland strengthening treatment system which is constructed artificially and operated under control to treat sewage, but the artificial wetland treatment system not only occupies a large area, but also is difficult to remove peculiar smell, is influenced by temperature, and is difficult to discharge the effluent reaching the standard particularly in winter.

(2) The anaerobic-anoxic-aerobic (A2/O) combined system is used for degrading part of refractory organic matters in the sewage, simultaneously improving the biodegradability of the sewage, providing a carbon source for a denitrification process in a subsequent anoxic stage and finally achieving the aim of efficiently removing COD, BOD, N and P. However, in the system, the nitrate in the returned sludge is harmful to the anaerobic zone due to the front anaerobic zone, the anoxic zone is positioned in the middle of the system, so that the carbon source is not enough to maintain the denitrification requirement, and the denitrification effect is influenced.

(3) The MBR membrane bioreactor is also a commonly used sewage treatment process at present, the process utilizes the separation effect of the membrane to greatly improve the sludge concentration of the system, thereby reducing the occupied area of sewage treatment facilities, reducing the excess sludge amount by keeping low sludge load, and having better effluent effect, but the process has higher operation cost and complex operation.

In addition, the treatment effect of the sewage treatment system and the process has higher dependence on the incoming water temperature to be treated, and the treatment effect of the sewage in a lower-temperature environment has the characteristic of lower efficiency.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to solve one of the technical problem that exists among the prior art at least, provide a sewage treatment plant, can be under the lower environment of ambient temperature, the sewage is handled to high-efficient stability.

According to the utility model discloses an embodiment provides a sewage treatment plant, include:

the biochemical treatment system purifies sewage through microorganisms and is connected with a water inlet pipe;

the system comprises an ecological filter tank system, a water inlet pipe, a water outlet pipe and a water outlet pipe, wherein a filter layer for filtering sewage is arranged in the ecological filter tank system, the ecological filter tank system is connected with the biochemical treatment system, and the ecological filter tank system is connected with the water inlet pipe;

the heat insulation shed, the biochemical treatment system and the ecological filter tank system are arranged in the heat insulation shed;

the heating system comprises a heater and a heater, the heater is arranged in the heat-insulating shed, and the heater is arranged in the biochemical treatment system; and

an energy supply system that provides electrical energy for the heating system.

Has the advantages that: this sewage treatment plant, sewage passes through biochemical treatment system and ecological filter system in proper order, biochemical treatment system is as the pretreatment module, purify sewage through the microorganism, ecological filter system further filters sewage, improve the sewage treatment effect, biochemical treatment system and ecological filter system locate in the thermal-insulation shed, the thermal-insulation shed plays the heat preservation effect, when ambient temperature is lower, the environmental temperature that the heat supply can guarantee in the thermal-insulation shed is suitable, the water temperature that the heater can guarantee among the biochemical treatment system is suitable, thereby make the microorganism can purify sewage under higher activity, this device still can handle sewage high-efficiently steadily under the lower condition of ambient temperature.

According to the utility model discloses sewage treatment plant, energy supply system include solar panel and with the automatic voltage regulator that solar panel connects, automatic voltage regulator connects heater and heater, automatic voltage regulator still is connected with the battery. The solar energy is adopted to provide electric energy for the heating system, the operating cost of sewage heating can be saved, the electric energy converted from the solar energy is adjusted by the automatic voltage regulator and is transmitted to the storage battery, the heater and the heater according to the condition, and the utilization rate of the solar energy is improved.

According to the embodiment of the utility model provides a sewage treatment plant, ecological filter system with be equipped with heat pump system between the biochemical treatment system, but heat pump system heating sewage to and follow sewage biochemical treatment system sends into ecological filter system. And (3) sending the sewage from the biochemical treatment system to the ecological filter tank system through a heat pump system so as to further purify the sewage, and heating the sewage to the set temperature by the heat pump system when the energy converted by the solar energy is not enough to heat the sewage to the set temperature. The heating system mainly adopts electric heating, the heat pump system realizes heating through the work done by the compressor, more saves electric energy, and the heating system and the heat pump system are matched for use, so that the operating cost of sewage heating can be saved to the maximum extent.

According to the utility model discloses sewage treatment plant, still include the heat recovery system, the heat recovery system includes heat exchanger and heat energy conduction pipe, the heat exchanger with go out water piping connection, the both ends of heat energy conduction pipe are connected respectively the heat exchanger with biochemical treatment system's inlet tube, the heat exchanger is connected with the draft tube. The sewage is heated, and the heat recovery system recovers and utilizes the heat in the purified sewage for heating the unpurified sewage, so that the operating cost of sewage heating is further saved.

According to the utility model discloses sewage treatment plant, biochemical treatment system guarantees sewage purification effect including the anaerobism pond that sets gradually, good oxygen pond, anaerobism pond, good oxygen pond, decomposes the organic matter in the sewage through the microorganism in anaerobism pond and the good oxygen pond.

According to the utility model discloses sewage treatment plant, ecological filter system includes at least one filtering ponds, each filtering ponds from the top down layering setting. The ecological filter system adopts a tower structure, and multi-stage filtration is adopted, so that the sewage purification effect is improved.

According to the utility model discloses sewage treatment plant, be equipped with mixed soil horizon, fine sand layer, haydite layer, garrulous blue or green stone layer, the big blue or green stone layer that from the top down set gradually in the filtering ponds, it has aquatic plant to plant on the mixed soil horizon. The filter layers sequentially filter and purify sewage, the aquatic plants on the mixed soil layer can purify harmful elements such as nitrogen, phosphorus and the like in the sewage, and the heating system and the heat pump system also ensure that the aquatic plants can grow at a proper temperature and purify the sewage under higher activity.

According to the utility model discloses sewage treatment plant, the top of filtering ponds is equipped with the water distributor of a plurality of crisscross settings, the pipeline surface of water distributor is equipped with a plurality of apopores. Sewage is uniformly scattered and leaked above the filter layer through the water replenishing pipe, the utilization rate of the filter layer is improved, and the sewage filtering effect is improved.

According to the utility model discloses sewage treatment plant, the bottom of filtering ponds is equipped with the flushing pipe of a plurality of crisscross settings, the pipeline surface of flushing pipe is equipped with a plurality of apopores. The device is maintained, high-pressure water is introduced into the flushing pipe, the filtering layer is flushed, pollutants are cleaned, and the service lives of the device and the filtering layer are prolonged.

According to the embodiment of the utility model provides a sewage treatment plant, the filtering ponds include filler module and transfer the water module, be equipped with the baffle in the filtering ponds, the baffle is separated the filtering ponds form filler module and transfer the water module, set up the filter layer in the filler module, the bottom of baffle is equipped with the infiltration hole, the bottom or the side of transferring the water module are equipped with the delivery port. Filtered sewage enters the water regulating module from the water seepage hole of the partition plate and flows out from the water outlet of the water regulating module, so that the water outlet is prevented from being blocked by silt and pollutants.

According to the utility model discloses sewage treatment plant, be equipped with the baffle in the water transfer module, the baffle upwards extends from the bottom. The baffle further blocks partial silt, prevents to block up the delivery port of transferring water module, and silt subsides in the bottom, and behind the water level highly exceeded the baffle height, sewage flowed from the delivery port.

Drawings

The present invention will be further explained with reference to the accompanying drawings:

fig. 1 is a schematic overall structure diagram of an embodiment of the present invention;

FIG. 2 is a schematic structural view of a biochemical treatment system according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a filtering tank according to an embodiment of the present invention;

FIG. 4 is a schematic structural view of a water distribution pipe and a flushing pipe according to an embodiment of the present invention;

FIG. 5 is a schematic structural view of a thermal insulation shed according to an embodiment of the present invention;

reference numerals: the biochemical treatment system 100, the ecological filter system 200, the heat preservation shed 300, the water outlet pipe 400, the heat pump system 500, the solar panel 600, the anaerobic tank 11, the aerobic tank 12, the water storage tank 13, the filter tank 20, the filler module 21, the water regulating module 22, the partition plate 23, the overflow port 24, the support 31, the heat preservation membrane 32, the moving wheel 33, the automatic voltage regulator 61, the storage battery 62, the heater 40, the heater 50, the heat exchanger 71, the heat energy conducting pipe 72, the tail water pipe 73, the water distribution pipe 80, the flushing pipe 90, the front valve 91, the rear valve 92, the mixed soil layer 211, the fine sand layer 212, the ceramsite layer 213, the crushed blue stone layer 214, the large blue stone layer 215, the baffle 221, the cleaning port 222 and the water seepage hole 231.

Detailed Description

This section will describe in detail the embodiments of the present invention, preferred embodiments of the present invention are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can intuitively and vividly understand each technical feature and the whole technical solution of the present invention, but they cannot be understood as the limitation of the protection scope of the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

Referring to fig. 1, the sewage treatment apparatus according to the embodiment of the present invention includes a biochemical treatment system 100, an ecological filter system 200, a heating system, an energy supply system, and a thermal insulation shed 300. Wherein, biochemical treatment system 100 purifies sewage through the microorganism, and biochemical treatment system 100 is connected with the inlet tube, is equipped with the filter layer that filters sewage in the ecological filter system 200, and ecological filter system 200 passes through the pipe connection with biochemical treatment system 100, and sewage gets into ecological filter system 200 after biochemical treatment system 100, and ecological filter system 200 is connected with outlet pipe 400. The biochemical treatment system 100 and the ecological filter system 200 are arranged in the heat preservation shed 300. The heating system comprises a heater 40 and a heater 50, wherein the heater 40 is arranged in the heat preservation shed 300, the heater 50 is arranged in the biochemical treatment system 100, the heater 50 comprises a temperature sensor, and the energy supply system supplies electric energy to the heating system.

This sewage treatment plant, sewage passes through biochemical treatment system 100 and ecological filter system 200 in proper order, biochemical treatment system 100 is as the pretreatment module, purify sewage through the microorganism, ecological filter system 200 further filters sewage, improve sewage treatment effect, biochemical treatment system 100 and ecological filter system 200 locate in heat-preserving shed 300, heat-preserving shed 300 plays the heat preservation effect, when ambient temperature is lower, the environment temperature suitable in heat-preserving shed 300 can be guaranteed to the heater 40, heater 50 can guarantee that the water temperature in biochemical treatment system 100 is suitable, thereby make the microorganism purify sewage under higher activity, this device still can high-efficiently stably handle sewage under the lower condition of ambient temperature, the outstanding problem that rural sewage treatment effect is poor under the lower temperature condition in winter, it is difficult to reach emission standard is solved.

In the present embodiment, the power supply system includes a solar panel 600 and an automatic voltage regulator 61 connected to the solar panel 600, the automatic voltage regulator 61 connects the heater 40 and the heater 50, and the automatic voltage regulator 61 is connected to the battery 62. The solar energy is adopted to provide electric energy for the heating system, the operation cost of sewage heating can be saved, the electric energy converted from the solar energy is regulated by the automatic voltage regulator 61 and is transmitted to the storage battery 62, the heater 40 and the heater 50 according to the situation, and the utilization rate of the solar energy is improved. The solar energy is used for supplying energy, the heater 50 is used for regulating the temperature of water in the biochemical treatment system 100 (20-25 ℃), when the temperature is maintained in the temperature range, the energy converted from the solar energy is transmitted to the heater 40 through the automatic voltage regulator 61, the indoor temperature is increased, when the indoor temperature is maintained in the range of 25-30 ℃, the energy converted from the solar energy is stored in the storage battery 62, and the heater 40 and the heater 50 are supplied with energy in rainy days.

In this embodiment, a heat pump system 500 is disposed between the ecological filter system 200 and the biochemical treatment system 100, the heat pump system 500 includes a heat pump for heating wastewater and a water pump for delivering wastewater, and the heat pump system 500 can heat wastewater and send wastewater from the biochemical treatment system 100 to the ecological filter system 200. The heat pump system 500 heats the sewage to the set temperature when the energy converted by the solar energy is insufficient to heat the sewage to the set temperature. The heating system mainly adopts electric heating, the heat pump system 500 realizes heating by acting through the compressor, electric energy is saved more, and the heating system and the heat pump system 500 are matched for use, so that the operating cost of sewage heating can be saved to the maximum extent. The heat pump system 500 may be similarly connected to the battery 62.

In addition, the device is provided with a heat recovery system, the heat recovery system comprises a heat exchanger 71 and a heat energy conduction pipe 72 (heat pipe), the heat exchanger 71 is connected with the water outlet pipe 400, and two ends of the heat energy conduction pipe 72 are respectively connected with the heat exchanger 71 and the water inlet pipe of the biochemical treatment system 100. The heat exchanger 71 transfers the heat in the treated water body to the water inlet section through the heat energy transfer pipe 72, and preheats the water body. The heat exchanger 71 is also connected to a tail water pipe 73, and the tail water after heat recovery is discharged through the tail water pipe 73. The sewage is heated by the heating system, and the heat recovery system recovers and utilizes the heat in the purified sewage for heating the unpurified sewage, thereby further saving the operating cost of sewage heating and reducing the energy consumption.

Referring to fig. 2, the biochemical treatment system 100 includes an anaerobic tank 11, an aerobic tank 12, an anaerobic tank 11, and an aerobic tank 12, which are sequentially arranged, so as to ensure a sewage purification effect, organic matters in sewage are decomposed by microorganisms in the anaerobic tank 11 and the aerobic tank 12, a vertical hanging film is arranged in each of the anaerobic tank 11 and the aerobic tank 12, so as to increase a contact area between the microorganisms and the sewage, and a reservoir 13 is arranged at a tail end of the biochemical treatment system. It can be understood that different combinations, such as "anaerobic-aerobic-anaerobic", "aerobic-anaerobic-aerobic", "anaerobic-aerobic", etc., can be set according to the water pollution condition (concentration of nutrient salts, organic matters, etc.) and the water quality requirement of the effluent.

In this embodiment, the ecological filter system 200 includes at least one filter tank 20, and the filter tanks 20 are arranged in layers from top to bottom and connected in sequence, and are arranged in a single layer when there is only a single filter tank 20. The ecological filter system 200 adopts a tower structure and multi-stage filtration, so that the sewage purification effect is improved.

Referring to fig. 3, a mixed soil layer 211, a fine sand layer 212, a ceramsite layer 213, a broken bluestone layer 214 and a megalite layer 215 are sequentially arranged in the filter tank 20 from top to bottom. Wherein, aquatic plants such as calamus, canna, etc. are planted on the mixed soil layer 211. Plant planting suitable for water quality treatment is selected according to sewage components, and the attachment of microorganisms can be increased by the root systems of the plants, so that the water body infiltration is facilitated. The filter layers sequentially filter and purify sewage, the aquatic plants on the mixed soil layer 211 can purify harmful elements such as nitrogen and phosphorus in the sewage, and the heating system and the heat pump system 500 also ensure that the aquatic plants can grow at a proper temperature and purify the sewage at a high activity. Likewise, different combinations of filter layers may be provided as desired. In the embodiment, the thickness of each filter layer is 20cm, the fine sand layer 212 is quartz sand with the thickness of 0.2-0.5mm, the ceramsite layer 213 is made of iron-rich ceramsite, a layer of sand-blocking geotextile with water permeability is added between the fine sand layer 212 and the ceramsite layer 213, the particle size of the broken Qingke layer 214 is 2-4cm, and the particle size of the big Qingke layer 215 is 4-8 cm.

Referring to fig. 1 and 4, a plurality of criss-cross water distribution pipes 80 are disposed above the filtering tank 20, the water distribution pipes 80 are communicated with each other, and a plurality of water outlet holes are disposed on the pipe surface (mainly the lower surface) of each water distribution pipe 80. Sewage is uniformly scattered and leaked above the filter layer through the water replenishing pipe, the utilization rate of the filter layer is improved, and the sewage filtering effect is improved. The heat pump system 500 sends the sewage from the biochemical treatment system 100 to the water distribution pipe 80 of the top filtering tank 20, the sewage enters the filtering tank 20 through the water distribution pipe 80, is filtered by each filtering layer, then flows into the water distribution pipe 80 of the lower layer, and then enters the filtering tank 20 of the lower layer.

In addition, the bottom of the filtering tank 20 is provided with a plurality of flushing pipes 90 arranged in a staggered manner, and the surface (mainly the upper surface) of the pipeline of the flushing pipe 90 is provided with a plurality of water outlet holes. The device is maintained by passing high pressure water through the flushing pipe 90 to flush the filter layer, mainly the bottom crushed sapphire layer 214 and the bottom big sapphire layer 215, to clean the pollutants and prolong the service life of the device and the filter layer. The flushing pipe 90 is provided with a front valve 91 and a rear valve 92, when the device works normally, the front valve 91 is closed, the filter layer is opened when being flushed, and high-pressure water is connected; the rear valve 92 is closed when the device is operating normally and the filter layers are being flushed and is opened when the flush tube 90 is being flushed.

In this embodiment, the filtering tank 20 includes a filler module 21 and a water diversion module 22, a partition 23 is provided in the filtering tank 20, the partition 23 partitions the filtering tank 20 to form the filler module 21 and the water diversion module 22, each filter layer is provided in the filler module 21, a water seepage hole 231 is provided at the bottom of the partition 23, and a water outlet is provided at the bottom or the side of the water diversion module 22. Filtered sewage enters the water regulating module 22 from the water seepage hole 231 of the partition plate 23 and flows out from the water outlet of the water regulating module 22, so that the phenomenon that the water flow is unsmooth due to the fact that sediment and pollutants block the water outlet is avoided.

Further, a baffle 221 is arranged in the water adjusting module 22, and the baffle 221 extends upwards from the bottom to a certain height. The baffle 221 further blocks part of silt to prevent blocking the water outlet of the water regulating module 22, the silt settles at the bottom, and after the water level exceeds the height of the baffle 221, sewage flows out from the water outlet. The side of the water diversion module 22 can be provided with a cleaning port 222, the baffle 221 is removed, the water diversion module 22 is cleaned, and silt is discharged through the cleaning port 222.

The filtering tank 20 is provided at an upper portion thereof with an overflow port 24 for preventing a water level from exceeding the filtering tank 20, and the overflow port 24 is connected to the filtering tank 20 of the next stage.

Referring to fig. 5, the thermal insulation shed 300 comprises a support 31 and a thermal insulation film 32 fixed by the support 31, the thermal insulation film 32 is a colorless transparent film and has good light transmission, a moving wheel 33 is arranged at the bottom of the support 31, the thermal insulation shed 300 and the device can be integrally moved, and the cover or the opening shape can be selected according to the outside weather.

The sewage treatment device works as follows: the collected domestic sewage (or a sewage pond in front of a house and behind the house) enters a biochemical treatment system 100 of a pretreatment module through a water inlet pipe, a water body treated by an anaerobic-aerobic process enters a reservoir 13, and enters an ecological filter tank system 200 through a heat pump system 500; preheating sewage in a water inlet pipe section through a heat recovery system; then the energy is supplied by solar energy, the heater 50 regulates the temperature of the water body in the biochemical treatment system 100 (20-25 ℃), when the temperature is maintained in the temperature range, the energy converted by the solar energy is transmitted to the heater 40 through the automatic voltage regulator 61 to heat the indoor space, when the indoor temperature is maintained in the temperature range of 25-30 ℃, the energy converted by the solar energy is stored in the storage battery 62, and when the sewage temperature is lower, the energy can be heated by combining with the heat pump system 500; the sewage is sent into the water distribution pipe 80 of the filtering tank 20 at the top layer through the heat pump system 500, is uniformly scattered and leaked to the filler module 21, sequentially passes through the mixed soil layer 211, the fine sand layer 212, the ceramsite layer 213, the broken bluestone layer 214 and the megastone layer 215 for filtration, is collected to the water diversion module 22 from the seepage hole 231, enters the water distribution pipe 80 of the filtering tank 20 at the next stage through the water diversion module 22, repeatedly processes for 2-3 stages, flows out from the water diversion module 22 of the filtering tank 20 at the last stage, and is discharged from the tail water pipe 73 after the heat energy is recovered by the heat recovery system.

The sewage treatment device solves the outstanding problems that the rural sewage treatment effect is poor and the discharge standard is difficult to reach under the condition of lower temperature in winter, and the heating system, the heat pump system 500 and the heat recovery system are jointly used, so that the operating cost of sewage heating is saved to the maximum extent under the condition of ensuring and maintaining good activity temperature of microorganisms. Meanwhile, the combined treatment process of the contact oxidation pretreatment process and the multi-stage tower type filter tank can ensure that the sewage discharge standard can be stably achieved all the year round. The system has low overall operation and maintenance cost, low energy consumption and strong stability.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims

1. A sewage treatment apparatus, comprising:

an energy supply system that provides electrical energy for the heating system.

2. The sewage treatment apparatus of claim 1, wherein: the energy supply system comprises a solar panel and an automatic voltage regulator connected with the solar panel, the automatic voltage regulator is connected with the heater and the heater, and the automatic voltage regulator is simultaneously connected with the storage battery.

3. The sewage treatment apparatus of claim 1, wherein: and a heat pump system is arranged between the ecological filter tank system and the biochemical treatment system, and can heat sewage and send the sewage into the ecological filter tank system from the biochemical treatment system.

4. The sewage treatment apparatus of claim 1, wherein: still include the heat recovery system, the heat recovery system includes heat exchanger and heat energy conduction pipe, the heat exchanger with go out water piping connection, the both ends of heat energy conduction pipe are connected respectively the heat exchanger with biochemical treatment system's inlet tube, the heat exchanger is connected with the draft tube.

5. The sewage treatment apparatus of claim 1, wherein: the biochemical treatment system comprises an anaerobic tank, an aerobic tank, an anaerobic tank and an aerobic tank which are arranged in sequence.

6. The sewage treatment apparatus according to any one of claims 1 to 5, wherein: the ecological filter tank system comprises at least one filter tank, and the filter tanks are arranged in a layered mode from top to bottom.

7. The sewage treatment apparatus of claim 6, wherein: the filter tank is internally provided with a mixed soil layer, a fine sand layer, a ceramsite layer, a broken stone layer and a large stone layer which are sequentially arranged from top to bottom, and aquatic plants are planted on the mixed soil layer.

8. The sewage treatment apparatus of claim 6, wherein: a plurality of water distribution pipes which are arranged in a staggered mode are arranged above the filtering tank, and a plurality of water outlet holes are formed in the surfaces of the pipelines of the water distribution pipes.

9. The sewage treatment apparatus of claim 6, wherein: the bottom of the filter tank is provided with a plurality of flushing pipes which are arranged in a staggered mode, and the surface of a pipeline of each flushing pipe is provided with a plurality of water outlet holes.

10. The sewage treatment apparatus of claim 6, wherein: the filter tank comprises a filler module and a water transfer module, a partition plate is arranged in the filter tank and used for separating the filter tank from the filler module and the water transfer module, a filter layer is arranged in the filler module, a water seepage hole is formed in the bottom of the partition plate, a water outlet is formed in the bottom or the side face of the water transfer module, a baffle is arranged in the water transfer module, and the baffle extends upwards from the bottom.