CN205347109U - Many families domestic sewage hydrolysis groove and many processing apparatus series -parallel connection combination devices - Google Patents

Abstract

The utility model relates to a series-parallel combination device of a multi-household domestic sewage hydrolysis tank and a plurality of treatment devices, comprising a hydrolysis tank and a treatment device, the hydrolysis tank and the treatment device are one or more, and the hydrolysis tank and the treatment device are connected together. Connection; when there are multiple processing devices, the processing devices are arranged in series or in parallel, and the processing devices are septic tanks. The utility model is a series-parallel combined device of multi-household domestic sewage hydrolysis tank and multiple processing devices with scientific design, reasonable structure and reliable operation. According to the current situation of domestic sewage treatment in rural households, the device improves the processing device and develops With this technology, its biggest advantage is in-situ treatment, no complicated pipe network is required, the buried type is not affected by seasonal temperature differences, unattended, and the life cycle is more than 30 years. The effluent reaches the first level of the national discharge standard and can be used for irrigation , lawn and other water can also be directly discharged into nature.

Description

Multi-household domestic sewage hydrolysis tank and multiple treatment devices series-parallel combination device

technical field

The utility model relates to the technical field of sewage treatment, in particular to a series-parallel combination device of a multi-household domestic sewage hydrolysis tank and a plurality of treatment devices.

Background technique

The rural population in my country was larger than the urban population in 2012, about 640 million people, and the BOD load discharged to the environment per person per day was 40g/person·day, and the total BOD load discharged to the environment by the agricultural population alone exceeded 1,000 per year. Three million tons, seriously polluting the quality of rural water bodies. The development of small-scale and high-efficiency domestic sewage purification tanks can solve the problem of centralized treatment and implement in-situ treatment, which can not only solve the pollution problem of rural domestic sewage from the source, but also promote the effective implementation of tap water in rural areas and improve the quality of rural life and the environment. quality. The rural domestic sewage purification project and the tap water project are complementary and one of the important contents of the new rural construction. The concept of rural domestic sewage pointed out here is different from urban domestic sewage. It can be understood as domestic sewage from farmers, private enterprises, border posts and people on islands outside the city. Although the amount of domestic sewage produced is small, it is scattered and difficult to concentrate. , It is very harmful to the natural water environment, and has become an important environmental problem in our country.

Household sewage refers to household sewage, which includes flushing water, kitchen water, bath water, and washing water. The treatment of domestic sewage should be based on the national domestic sewage discharge standards, according to the characteristics of domestic sewage: discontinuity, intermittent pulse, concentrated water in the morning, middle and evening, and flushing water and kitchen water with refractory Solid particles need to be treated directly and meet national discharge standards, so equipment suitable for decentralized treatment of rural domestic sewage requires higher technology than urban sewage treatment.

In addition, due to the low population density in rural areas, the scattered residence of farmers, the small amount of sewage in some areas, and the large differences in terrain, lack of sewage collection and transportation facilities, it is difficult to collect domestic sewage in a centralized manner, especially in small towns. Although the oxidation ditch process, A/O process, A2/O process, AB and SBR processes have remarkable effects in urban domestic sewage treatment, these centralized treatment methods require expensive sewage collection pipe network construction costs, not only investment Large, complex operation and management, high maintenance costs, it is difficult to popularize and implement in rural areas with low economic development level and backward technology. Therefore, the centralized processing model will be difficult to implement in rural areas due to financial reasons, and decentralized processing is very important.

In response to these difficulties, the inventor of the utility model has developed a rural single-family domestic sewage treatment device, and obtained the patent of "household self-flowing domestic sewage purification treatment device" (ZL200520130697.0), and passed the demonstration project of three purification treatment devices , It has been fully verified. It has been running continuously for more than seven years since August 23, 2008, and there has been no failure. Even if it is flooded by water under the heavy rain in summer, the scum in the anaerobic zone of the first section is brought into the aeration The area will also be digested in a few days due to the action of aerobic microorganisms in the aeration, and will return to the original stable operation, and the effluent will be clear and transparent. A lot of conclusions have been obtained from this successful demonstration project. The developed plate-type biological filter bed has high-efficiency biodegradability and is not suitable for clogging. Moreover, due to the use of the biological filter bed, the amount of sludge generated is extremely limited. So far, no It has been cleaned due to sludge, especially the aeration space is connected to the anaerobic zone, with sufficient oxygen partial pressure, and the scum in the first-stage anaerobic zone is decomposed by aerobic metazoans, forming an ecological chain in the whole system , effectively promoting the degradation and purification of domestic sewage. This biodegradation device is highly independent. Once it is started, it is almost unattended. Due to the improvement of the quality of the air pump, the aeration has never been stopped due to mechanical failure. The demonstration project has not stopped and has been running stably. Because of its reliability and practicability, the "Research and Development and Demonstration Promotion of Standardized Rural Domestic Sewage Treatment Technology Model" won the first prize of the 2012-2013 Harvest Award of the Ministry of Agriculture in 2014.

However, although the single-household treatment device can treat domestic sewage well and is almost unattended, the device is too expensive after all. If one household is installed in rural areas, the financial pressure will inevitably be great. Due to the limitation of large differences, the construction of pipe network is not only expensive but also very difficult, and it is almost impossible to promote it. Therefore, it is very important to develop a processing model suitable for my country's national conditions.

Utility model content

The purpose of the utility model is to make up for the deficiencies of the prior art, and to provide a series-parallel combination device of multi-household domestic sewage hydrolysis tanks and multiple treatment devices with good treatment effect and low cost.

The purpose of this utility model is achieved by the following technical means:

A series-parallel combination device of a multi-household domestic sewage hydrolysis tank and multiple treatment devices, characterized in that it includes a hydrolysis tank and a treatment device, one or more of the hydrolysis tanks, a plurality of treatment devices, the hydrolysis tank and the treatment device The devices are connected; the processing devices are arranged in series or in parallel.

Moreover, a regulating tank is connected between the hydrolysis tank and the treatment device.

Moreover, the hydrolysis tank includes a tank body, an inlet pipeline is installed on one side of the tank body, one end of the inlet pipeline is located outside the tank body and connected to the user, and the other end extends into the water inside the tank body to form a liquid seal; An outlet pipeline is installed on the other side of the body, one end of the outlet pipeline extends into the water inside the tank body, and the other end extends to the outside of the tank body and is connected to the water inlet pipe of the treatment device.

Moreover, the water inlet end of the inlet pipeline is higher than the outlet end of the outlet pipeline, and a baffle plate is arranged in the tank near the outlet pipeline, the upper end of the baffle plate is higher than the liquid level, and the bottom surface of the hydrolysis tank with gaps.

Moreover, the treatment device is a purification tank, on which an inlet pipe and an outlet pipe are installed, and the inside of the purification tank is sequentially divided into a first-level purification area, a second-level purification area, and a third-level purification area by partitions. As well as the sedimentation tank, the water inlet pipe is connected to the first-stage purification area, and the outlet pipe is connected to the sedimentation tank. Biological filter materials are installed in each purification area, and an aeration device is installed in each purification area; in the third-stage An air stripping device is installed in the purification area; the water inlet pipe of the purification tank is connected to one or more hydrolysis tanks.

Moreover, the three purification areas are respectively anaerobic tanks and aerobic tanks, the number of anaerobic tanks is 0-3, and the number of aerobic tanks is 1-3.

Moreover, the bottom of the settling tank is made into an inclined surface, and a disinfection tank is arranged on the settling tank at the outlet pipe.

Moreover, the aeration device includes an aeration pipe, a gas valve and an air pump, the bottom of the aeration pipe is arranged at the lower part of the purification area, the upper part of the aeration pipe is connected with the air pump, and an independent air pump is installed on each aeration pipe. gas valve.

And, described gas-lifting device comprises gas pipe, gas-lifting tank and connection pipe, and the upper end of gas pipe connects air pump, and a control valve is installed on the gas pipe, and the lower end of gas pipe connects gas-lifting tank; One end of connecting pipe connects gas-lifting tank, and another One end extends into the first-stage purification area.

Moreover, the filter bed of the biological filter material is a plate-type packing filter bed, and the surface of the plate-type packing filter bed is roughened to form a burr structure.

Advantage and positive effect of the present utility model are:

1. The device is composed of a hydrolysis tank and a purification tank. The hydrolysis tank and the purification tank are one or more, and when there are multiple purification tanks, they are connected in series and parallel. This method is suitable for the multi-household combined use mode of rural domestic sewage treatment, and realizes in-situ treatment. After adopting this equipment, the sewage treatment effect can be improved, the treatment cost can be reduced, and the possibility of its wide promotion in rural areas can be improved.

2. The utility model is an integrated design, miniaturization and high-efficiency equipment. It adopts the buried method and does not need to be guarded by humans. The life cycle can reach 50 years.

3. When multiple purification tanks are connected in series, it forms an A-O-A-O denitrification process, and cooperates with the denitrification function of the filter bed in the purification tank, thereby greatly improving the denitrification effect, realizing efficient denitrification, and enhancing sewage treatment. Effect.

4. An air lift device is added to the third-stage purification area of the purification tank, which is mainly used for the new treatment device to allow the input bacteria to form a cycle in the entire treatment system, increase the average density of microorganisms in the device, and promote Rapid formation of biofilter beds. Once the biofilter bed is formed, such a stripping unit can be shut down to allow more gas to be used for aeration.

5. The three purification areas of the purification tank are all connected to the aeration system, and each aeration system is controlled by an independent gas valve. According to the requirements, a single, two or three areas can be aerated at the same time to expand the processing capacity. . Because the biodegradability of the aerobic process is far greater than that of the anaerobic process, it is just that aerobic aeration requires energy consumption, so optimizing the aeration rate is extremely important, and it is also one of the contents to be optimized by the utility model.

6. The plate-type packing filter bed is used in the purification tank, and the surface is brushed during the processing to make the surface rougher. The purpose is to quickly form a biological filter bed on the surface for microorganisms, because the biological filter bed is domestic sewage. Degraded subject.

7. The integrated technology of plug-flow anaerobic bioreactor and fully mixed-flow aerobic bioreactor prevents high-concentration sewage from entering low-concentration areas, increases impact resistance, and is beneficial to the treatment of intermittent domestic sewage.

8. The overall structure of the purification tank is designed and manufactured in a standardized manner, which is convenient for standardization and industrialization, and is suitable for large-scale promotion in rural areas of our country.

9. During the use of the utility model, the anaerobic or aerobic mode can be reasonably selected according to the processing capacity, and the aeration rate can be adjusted by selecting air pumps with different powers. Therefore, the device is flexible and convenient to use and has good practicability.

10. The baffle in the hydrolysis tank promotes the sewage from top to bottom, through the bottom, and upwards in the baffle. The inlet and outlet pipelines are directly extended into the water, and the water inlet pipe forms a liquid seal, so that the odor generated by the anaerobic process cannot return to the house; The water outlet pipe also extends into the water, which can prevent possible scum from entering the water outlet pipe and avoiding the blockage of the sewer pipe.

In addition, the hydrolysis tank serves two other purposes besides being simple to make. One is to allow the soil and other solids that enter the hydrolysis tank in household life and solids that cannot be degraded by microorganisms to settle and separate here, reducing the load on subsequent new treatment devices. The second is to use anaerobic microorganisms for preliminary treatment or degradation, so that more pollutants can be converted into soluble pollutants, which is conducive to the degradation of subsequent new treatment devices.

These two functions can realize the normalization of sewage, and the effluent should not contain substances such as soil that cannot be degraded by microorganisms as much as possible, but a kind of water-based sewage. Every family uses this kind of sewage to flow into the new treatment device through the pipeline, so the requirements for the pipeline can be lowered. In the limited range of multiple households, a standard PVC sewer pipe with an inner diameter of 10 cm can be selected, which can greatly improve the quality of the sewage. Reduce pipeline costs and construction costs.

11. The scum in the hydrolysis tank can be taken out and used as organic fertilizer, and the effluent from the hydrolysis tank can be used to irrigate crops (such as: watering vegetables, watering flowers, etc.) after being diluted, thus rationally utilizing resources and realizing waste reuse. Especially suitable for rural use.

12. The utility model is a series-parallel combined device of multi-household domestic sewage hydrolysis tank and multiple treatment devices with scientific design, reasonable structure and reliable operation. This equipment improves the treatment device according to the current situation of domestic sewage treatment in rural households. This technology has been developed, and its biggest advantage is in-situ treatment, no complicated pipe network is required, the buried type is not affected by seasonal temperature differences, unattended, the life cycle is more than 30 years, and the effluent reaches the first level of the national discharge standard, which can be used It is used for irrigation, lawn, etc., and can also be directly discharged into nature.

Description of drawings

Fig. 1 is the structural representation of purification tank in the utility model;

Fig. 2 is the structural representation of hydrolysis tank among the utility model;

Fig. 3 is a process flow chart of domestic sewage treatment of fifteen households combined use;

Figure 4 is a flow chart of the joint treatment process of domestic sewage in ten buildings and farmhouses;

Figure 5 is a flow chart of the series connection process of two new purification tanks for domestic sewage in the factory;

Figure 6 is a flow chart of the series-parallel connection of multiple new purification tanks.

detailed description

The embodiments of the present utility model are described in detail below in conjunction with the accompanying drawings; it should be noted that the present embodiments are descriptive, not restrictive, and cannot limit the protection scope of the present utility model with this.

A series-parallel combination device of a multi-household domestic sewage hydrolysis tank and multiple treatment devices, including a hydrolysis tank 20 and a treatment device, the hydrolysis tank is one or more, and the treatment device is multiple, and the hydrolysis tank is connected to the treatment device ; The processing device is set in series or in parallel. A regulating tank can also be connected between the hydrolysis tank and the treatment device.

The hydrolysis tank includes a tank body 22, one side of the tank body is equipped with an inlet pipeline 21, one end of the inlet pipeline is located outside the tank body and connected to the user, and the other end extends into the water inside the tank body to form a liquid seal; the other end of the tank body An outlet pipeline 24 is installed on one side, one end of the outlet pipeline extends into the water inside the tank body, and the other end extends to the outside of the tank body and is connected to the water inlet pipe of the purification tank. The inlet end of the inlet pipeline is higher than the outlet end of the outlet pipeline, and a barrier plate 23 is arranged in the tank near the outlet pipeline. The upper end of the barrier plate is higher than the liquid level, and there is a gap between the lower end and the bottom surface of the hydrolysis tank. gap.

Described processing device is purification tank 19, and water inlet pipe 1 and water outlet pipe 16 are installed on this purification tank, and the inside of this purification tank is separated into first-level purification area 2, second-level purification area 5, second-level purification area 5, and second-level purification area by dividing plate 13 Tertiary purification area 12 and settling tank 14, three purification areas are anaerobic tank and aerobic tank respectively, the quantity of this anaerobic tank is 0-3, the quantity of aerobic tank is 1-3, and its quantity is Set according to the amount of sewage. The first-stage purification area is usually an anaerobic tank. The water inlet pipe is connected with the first-level purification area, and the water outlet pipe is connected with the sedimentation tank. The bottom of the sedimentation tank is made into an inclined surface 17, and a disinfection tank 15 is set on the sedimentation tank at the outlet pipe position.

The reverse water structure 8 is used to connect between two adjacent purification areas, and between the third-stage purification area and the sedimentation tank. The reverse water structure between two adjacent purification areas is a reverse water tank structure with an opening at its lower end; The anti-water structure between the tertiary purification area and the sedimentation tank is in the form of an opening at the lower end of the partition.

An aeration device is installed in each purification area, the aeration device includes an aeration pipe 3, a gas valve 4 and an air pump 10, the bottom of the aeration pipe is arranged at the lower part of the purification area, and the upper part of the aeration pipe is connected with the air pump, And each aeration pipe is equipped with an independent gas valve.

An air lift device is installed in the third-level purification area, and the air lift device includes a gas pipe 9, a gas lift tank 18 and a connecting pipe 6. The upper end of the gas pipe is connected to an air pump, and a control valve 11 is installed on the gas pipe, and the lower end of the gas pipe is connected to the air pipe. Lifting tank; one end of the connecting pipe is connected to the lifting tank, and the other end extends to the first-stage purification area.

Biological filter material 7 is arranged in each purification area, and there is a gap between the biological filter material and the bottom of the purification tank. The filter bed of the biological filter material is a plate-type packing filter bed, and the surface of the plate-type packing filter bed is roughened to form a burr structure.

Embodiments of the utility model are:

Embodiment one:

Combined use of domestic sewage from fifteen households: as shown in Figure 3, fifteen hydrolysis tanks (1200X800X1200) and two new purification tanks (2100X1500X1700) are connected in series. The air pump power of the purification tank is 200W, the gas flow rate is 200L/min, the power of the second one is 150W, the gas flow rate is 150L/min, and the power consumption per ton of water is 0.28 yuan.

From right to left, the water samples in each area are the water from the hydrolysis tank, the first and third levels of the first new type of purification tank, the first and third levels of the second new type of purification tank, and the effluent from the disinfection tank. From the first-level area of the first new purification tank in the picture, it can be seen that the sewage entering the tank is particularly turbid, with a high concentration, and the BOD is as high as 362mg/L. After treatment, the effects of each level are obvious in turn, the effluent from the disinfection tank becomes clear and transparent, colorless and odorless, and the BOD drops to 8mg/L. It can also be seen from the water samples in various regions that, with such a change, the water quality is better and the transparency is also clearer and clearer. The effect is very obvious.

Embodiment two:

Combined use of domestic sewage in ten buildings and farmhouses: as shown in Figure 4, two hydrolysis tanks (2100X1500X1700) are respectively connected to the domestic sewage of five households from top to bottom, two new purification tanks (2100X1500X1700) The treated sewage is concentrated into the new type of purification tank connected in series. The first, second, and third-level areas are all aerated. The air pump power of the first new purification tank is 150W, the gas flow rate is 150L/min, the power of the second one is 120W, the gas flow rate is 120L/min, and the power consumption per ton of water is 0.33 Yuan.

Changing the amount of aeration can increase the number of processing households. When the new purification tank is fully aerated and the power of the air pump is 200W, the number of processing households can be increased to 20. Under the same conditions, the new purification tanks used in series are more efficient than those used separately.

The water samples in each area, from left to right, are the first and second stages of the hydrolysis tank, the first and third stages of the first new type of purification tank, the third stage of the second new type of purification tank, and the effluent from the disinfection tank. From the first stage of the hydrolysis tank in the picture, it can be seen that there is scum above the water layer, while the third-stage aeration water quality of the second new purification tank is very good, and the underwater biological filter bed can be seen from above. The water quality of the hydrolysis tank is very turbid, and the BOD is between 300mg/L and 350mg/L. After treatment, the effects of each level are obvious in sequence, the effluent from the disinfection tank becomes clear and transparent, colorless and odorless, and the BOD drops to less than 9mg/L. It can also be seen from the water samples in various regions that, with such a change, the water quality is better and the transparency is also clearer and clearer. The effect is very obvious.

Embodiment three:

As shown in Figure 5, the Wucheng branch of Shandong Shuangyi Group Co., Ltd. has 250 employees and a staff canteen. The daily discharge of domestic sewage is 18 tons. The original 6 cubic meter three-cell hydrolysis tank will be reduced according to the daily treatment capacity. Two new purification tanks and septic tanks are used in series, as shown in the figure. The first, second, and third-level regional aeration is adopted. The air pump power of the first new purification tank is 200W, the gas flow rate is 200L/min, the power of the second one is 150W, the gas flow rate is 150L/min, and the power consumption per ton of water is 0.24 Yuan.

The water samples in each area, from right to left, are the effluent from the hydrolysis tank, the first and third levels of the first new type of purification tank, the third level and the effluent of the second new type of purification tank. From the water outlet state of the hydrolysis tank in the picture, it can be seen that the BOD of the effluent is as high as 280mg/L. After entering the new purification tank, the water quality is obviously improved after being biodegraded by aerobic microorganisms, and the transparency is also clearer than the first level. The water quality BOD is 9mg/L, clear and transparent. It is basically unattended. Even if the bacteria are injected at the end of December and the sewage is biochemically treated, the BOD of the effluent water quality can reach the national discharge standard level one in mid-February of the next year.

Embodiment four:

As shown in Figure 6, there are 89 households in Taohuasi Village, Jixian County, Tianjin City, with a population of 289 people. Due to the development of tourism farmhouses, 50 tons of sewage are discharged every day, and one hydrolysis tank is used for each household. Depending on the terrain of the mountainous area, the domestic sewage collected is passed through the sewer The pipe network enters into the adjustment pool for acidification and hydrolysis, and then flows into the two purification tanks connected in series by means of gravity.

The new purification tanks all use aeration in the first, second and third-level areas. The air pump power of the first and second new purification tanks is 200W, and the gas flow rate is 200L/min. The power of the third new purification tank is 150W, and the gas flow rate It is 150L/min, two parallel operations are implemented, and the power consumption per ton of water is 0.27 yuan. The water samples in each district represent the water from the regulating tank, the water from the first new purification tank and the water from the third new purification tank from right to left.

Septic tank treatment cost comparison

The cost per ton of water treatment decreases with the increase in the number of users. The maximum daily water treatment capacity of each purification tank is 9 tons, and the effluent meets the national first-class standard for domestic sewage treatment and discharge. The septic tank agent can be applied independently, and can be combined with septic tanks. At the same time, according to the size of the water volume, multiple septic tanks can be connected in series and parallel to increase the processing capacity. The more series and parallel connections, the lower the treatment cost per ton of water. The biggest advantage of this technology integration is in-situ treatment, no complex pipe network is required, the buried type is not affected by seasonal temperature differences, unattended, and the life cycle is more than 30 years. The effluent reaches the first level of the national discharge standard and can be used for irrigation, Lawn and other water can also be directly discharged into nature.

Claims (10)

1. the hydrolytic tank of family sanitary sewage more than a kind processes device connection in series-parallel combination unit with multiple stage, it is characterised in that: including hydrolytic tank and process device, described hydrolytic tank is one or more, and it is multiple for processing device, and hydrolytic tank is connected with processing device；Process device and adopt setting in series or in parallel.

2. one many families according to claim 1 sanitary sewage hydrolytic tank processes device connection in series-parallel combination unit with multiple stage, it is characterised in that: connect a regulating reservoir between described hydrolytic tank and process device.

3. one many families according to claim 1 sanitary sewage hydrolytic tank processes device connection in series-parallel combination unit with multiple stage, it is characterized in that: described hydrolytic tank includes cell body, inlet ductwork is installed in the side of this cell body, one end of this inlet ductwork is positioned at outside cell body and connects user, and the other end stretches into formation fluid-tight in the water within cell body；The opposite side installation outlet pipeline of cell body, one end of this export pipeline is stretched in the water within cell body, and the other end extends to outside cell body and connects the water inlet pipe processing device.

4. one many families according to claim 3 sanitary sewage hydrolytic tank processes device connection in series-parallel combination unit with multiple stage, it is characterized in that: the water inlet end of described inlet ductwork is higher than the port of export of export pipeline, in the cell body of export pipeline, a baffler is set, the upper end of this baffler is higher than liquid level, has gap between lower end and hydrolytic tank bottom surface.

5. one many families according to claim 1 sanitary sewage hydrolytic tank processes device connection in series-parallel combination unit with multiple stage, it is characterized in that: described process device is purification tank, this purification tank is installed into water pipe and outlet pipe, the inside of this purification tank is separated into the first order successively by dividing plate and purifies region, purification region, the second level, third level purification region and stillpot, water inlet pipe purifies region with the first order and is connected, outlet pipe is connected with stillpot, it is respectively provided with biofilter material in each purification region, in each purification region, is respectively mounted an aerator；Purify the third level and an air-lift device is installed in region；The water inlet pipe of purification tank connects one or more hydrolytic tank.

6. one many families according to claim 5 sanitary sewage hydrolytic tank processes device connection in series-parallel combination unit with multiple stage, it is characterized in that: described three purify region respectively anaerobism groove and aerobic slot, the quantity of this anaerobism groove is 0-3, and the quantity of aerobic slot is 1-3.

7. one many families according to claim 5 sanitary sewage hydrolytic tank processes device connection in series-parallel combination unit with multiple stage, it is characterised in that: inclined plane is made in the bottom of described stillpot, and arranges disinfection trough on the stillpot at outlet pipe position.

8. one many families according to claim 5 sanitary sewage hydrolytic tank processes device connection in series-parallel combination unit with multiple stage, it is characterized in that: described aerator includes aeration tube, gas valve and air pump, the bottom of aeration tube is arranged on the bottom purifying region, the top of aeration tube is connected with air pump, and is respectively mounted an independent gas valve on each aeration tube.

9. one many families according to claim 5 sanitary sewage hydrolytic tank processes device connection in series-parallel combination unit with multiple stage, it is characterized in that: described air-lift device includes trachea, air stripping tank and connecting tube, the upper end of trachea connects air pump, and trachea is installed a control valve, the lower end of trachea connects air stripping tank；One end of connecting tube connects air stripping tank, and the other end extends to the first order and purifies in region.

10. one many families according to claim 5 sanitary sewage hydrolytic tank processes device connection in series-parallel combination unit with multiple stage, it is characterized in that: the filter bed of described biofilter material is gasket packing filter bed, the surface of this gasket packing filter bed has carried out wharf's pavement quality and has formed burr structure.