CN211814035U

CN211814035U - Integrated sewage treatment equipment

Info

Publication number: CN211814035U
Application number: CN202020370981.XU
Authority: CN
Inventors: 田丰
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-03-23
Filing date: 2020-03-23
Publication date: 2020-10-30
Anticipated expiration: 2030-03-23

Abstract

The utility model discloses an integration sewage treatment device, including oxidation pond, bological aerated filter and air hose, the left lower extreme of oxidation pond is connected with the air hose, and the air hose downside is connected with the inlet tube, is equipped with the filler in the oxidation pond, the oxidation pond right-hand member is equipped with the outlet pipe, the left lower extreme of bological aerated filter is connected with the water distribution tank, water distribution tank upper end and play water piping connection, bological aerated filter lower extreme left side is equipped with the back flush inlet tube, and back flush inlet tube right side is connected with the back flush intake pipe, downside is equipped with special filter head in the bological aerated filter, and the bological aerated filter right-hand member is equipped with. When the utility model is used, the aeration biological filter tank has the functions of removing SS, COD, BOD, nitration, denitrification, dephosphorization and removing AOX (harmful substance).

Description

Integrated sewage treatment equipment

Technical Field

The utility model relates to a sewage treatment technical field specifically is integration sewage treatment device.

Background

Sewage treatment: the sewage is purified to reach the water quality requirement of being discharged into a certain water body or being reused. Sewage treatment is widely applied to various fields such as buildings, agriculture, traffic, energy, petrifaction, environmental protection, urban landscape, medical treatment, catering and the like, and is increasingly used in daily life of common people. The topics about water pollution are continuously raised, particularly the problem of underground water pollution, farmers or enterprises in Hangzhou and Wenzhou Zhejiang pay for the environmental protection captivity to go to the river and swim, so that attention to the serious degree of water pollution is brought to people.

The existing sewage treatment equipment can only carry out simple filtration treatment on sewage, and the filtration process is single. Accordingly, those skilled in the art have provided an integrated sewage treatment apparatus to solve the problems set forth in the background art described above.

Disclosure of Invention

An object of the utility model is to provide an integration sewage treatment device to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

integration sewage treatment device, including oxidation pond, bological aerated filter and air hose, the left lower extreme of oxidation pond is connected with the air hose, and the air hose downside is connected with the inlet tube, is equipped with the filler in the oxidation pond, the oxidation pond right-hand member is equipped with the outlet pipe, bological aerated filter left side lower extreme is connected with the water distribution tank, and water distribution tank upper end and play water piping connection, bological aerated filter lower extreme left side is equipped with the back flush inlet tube, and back flush inlet tube right side is connected with the back flush intake pipe, the downside is equipped with special filter head in the bological aerated filter, and bological aerated filter right-hand member is equipped with.

As a further aspect of the present invention, the filler underside is provided with a grid support.

As a further proposal of the utility model, the lower end of the oxidation pond is provided with an emptying valve.

As a further proposal of the utility model, a plurality of single-hole membrane air diffusers are arranged on the aeration pipe.

As a further proposal of the utility model, the upper side in the aeration biological filter tank is provided with a biological filter material.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses during the use, biological contact oxidation is biological waste water biological treatment method, it is leading mainly to be attached to the biomembrane that contact oxidation method derives from the biomembrane method and come out the carrier (commonly known as filler), purify organic waste water's a high-efficient water treatment process, be the biomembrane method that has the characteristics of activated sludge process, the advantage of active sludge process and biomembrane method has concurrently, biological treatment is the link after the physicochemical treatment, also be the important link in the whole sewage treatment circulation flow, here harmful substance such as ammonia nitrogen, nitrous acid, nitrate, hydrogen sulfide will all get rid of, will play the key role to the further processing of quality of water in the flow afterwards.

2. When the utility model is used, the aeration biological filter tank has the functions of removing SS, COD, BOD, nitration, denitrification, dephosphorization and removing AOX (harmful substance).

3. The utility model discloses during the use, filter and adopt quartz sand filter quartz sand granularity, carry out the modularized configuration according to the difference of inflow, single equipment treatment water yield 200-³The treatment process has the advantages that the treatment process is different in treatment time and treatment time, integrated equipment runs automatically, unattended operation is realized, operation and maintenance are simple, automatic water inlet, water outlet, backwashing, aeration and the like are realized, sludge is not generated in the running process of the equipment, secondary pollution is avoided, secondary treatment is realized, the occupied area is small, the treatment process can be external and buried, the treatment efficiency is high, and the treatment process can completely reach the standard especially for urban domestic sewage treatment.

Drawings

FIG. 1 is a schematic structural diagram of an oxidation pond in the integrated sewage treatment equipment.

FIG. 2 is a schematic structural view of a biological aerated filter in an integrated sewage treatment plant.

In the figure: 1. an air tube; 2. a water inlet pipe; 3. a filler; 4. a water outlet pipe; 5. a water distribution tank; 6. biological filter materials; 7. backwashing the water inlet pipe; 8. backwashing the air inlet pipe; 9. a special filter head; 10. an aeration pipe; 11. a single-hole membrane air diffuser; 12. back flushing the water outlet; 13. a normal drain pipe; 14. an oxidation pond; 15. an aeration biological filter.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1, in the embodiment of the present invention, an integrated sewage treatment apparatus includes an oxidation pond 14, a biological aerated filter 15 and an air pipe 1, the left lower end of the oxidation pond 14 is connected with the air pipe 1, the lower side of the air pipe 1 is connected with a water inlet pipe 2, a filler 3 is arranged in the oxidation pond 14, the lower side of the filler 3 is provided with a grid support, the right end of the oxidation pond 14 is provided with a water outlet pipe 4, and the lower end of the oxidation pond 14 is provided with an emptying valve;

the left lower end of the biological aerated filter 15 is connected with a water distribution tank 5, the upper end of the water distribution tank 5 is connected with a water outlet pipe 4, a biological filter material 6 is arranged on the upper side in the biological aerated filter 15, and the biological aerated filter is characterized in that no sludge is produced due to special filler arrangement, a backwashing water inlet pipe 7 is arranged on the left side of the lower end of the biological aerated filter 15, a backwashing air inlet pipe 8 is connected to the right side of the backwashing water inlet pipe 7, a special filter head 9 is arranged on the lower side in the biological aerated filter 15, an aeration pipe 10 is arranged at the right end of the biological aerated filter 15, a plurality of single-hole membrane air diffusers 11 are arranged on the aeration pipe 10, a backwashing water.

The utility model discloses a theory of operation is:

when the utility model is used, biological contact oxidation is a biological wastewater biological treatment method, and is a high-efficiency water treatment process for purifying organic wastewater by mainly using a biological membrane attached to a carrier (commonly called filler) derived from a biological membrane method by a contact oxidation method; the method is a biomembrane method with the characteristics of an activated sludge method, and has the advantages of both the activated sludge method and the biomembrane method; the biological treatment is a link after physicochemical treatment and is also an important link in the whole sewage treatment circulation flow, and harmful substances such as ammonia nitrogen, nitrous acid, nitrate, hydrogen sulfide and the like are removed, so that the biological treatment plays a key role in further treatment of water quality in the subsequent flow. Has a direct impact on the removal of BOD 5;

the contact oxidation sewage treatment process has the characteristics that: firstly, a segmentation method is used for improving the purification capacity. The biochemical process is divided into two stages. Firstly, organic matters are adsorbed on the sludge or exist in cells for biosynthesis, and the adsorption synthesis speed is high. The biochemical process of the second stage is mainly oxidation and has lower speed;

secondly, the efficiency of the sedimentation tank is improved by adding a contact layer. Settling the biological membrane in the sedimentation tank, intercepting fine suspended matters by a filter layer, and taking the ascending flow speed of the sedimentation tank to be 6.5-7.5 m/h; the clarification zone stays for 15 min;

thirdly, the contact oxidation process can achieve the effect of the activated sludge process for 8 hours only by 0.5-1.0 hour

The following requirements are adopted for the filler selection:

(1) typically, a honeycomb filler or a strand material is used. The aperture of the honeycomb filler is selected according to the factors such as the water quality of wastewater (BOD5, namely the concentration of five-day biochemical oxygen demand, suspended matters and the like), BOD load, oxygenation conditions and the like. Under the general condition, the concentration of BOD5 is 100-300 mg/L, and the pore diameter can be 32 mm;

the biological filler is a bundle filler made of PP and vinylon, the diameter of the filler is 40-100 mm, and the specific surface area of the filler is 400-800 m²/m³The packing arrangement density in the biochemical reaction tank is 40-80%, and the packing arrangement interval is 50-250 mm;

(2) the filler has the advantages of light weight, good strength, strong oxidation and corrosion resistance and no new toxicity. More honeycomb fillers such as glass cloth, plastics and the like are adopted; the filling type comprises honeycomb, net, oblique corrugated plate and the like;

(3) the BOD load of the biological contact oxidation method is related to the substrate concentration of the wastewater, and 2-5 kg (BOD) is adopted for every cubic meter of filler of wastewater with low BOD concentration (50-300 mg/L) every day₅) The retention time of the waste water is 0.5-1.5 hours, and the oxygen consumption in the oxidation pond is about 1-3 mg/L. Because the biomass in the oxidation pond is large, the treatment load is high, the dissolved oxygen can be controlled to be high, and the residual dissolved oxygen in the effluent of the oxidation pond is generally required to be 2-3 mg/L;

the Biological Aerated Filter (BAF) is a novel sewage treatment process by a biofilm method, and has the functions of removing SS, COD, BOD, nitrification, denitrification, dephosphorization and removing AOX (harmful substances). The aeration biological filter tank is a new process integrating biological oxidation and suspended solid interception;

the main body of the biological aerated filter can be divided into a water distribution system, an air distribution system, a supporting layer, a biological filter material layer, a back flush and the like,

the specific contents are as follows:

1. tank body

2. A supporting layer: bearing layer material (cobblestones); the replacement principle is as follows:

the supporting layer is mainly used for supporting the filtering material, preventing the filtering material from flowing and blocking the filtering head, and simultaneously keeping the backwashing stably. The supporting layer is usually made of pebbles or magnetite. In order to ensure the stability of the bearing layer and fully play a role in the uniformity of water distribution, the material is required to have good mechanical strength and chemical stability, the shape is close to a circle as much as possible, and cobblestones are generally selected as the bearing layer in engineering.

2. A filter material layer: filtering materials (ceramic particles) in the aeration biological filter tank;

the selection of the filler as a biofilm carrier is one of the keys of the success of the biofilm reactor technology and determines whether the reactor can run efficiently, so the selection of the filler always follows the following principle.

(1) The mechanical strength is good: the biological filler is necessary to have the mechanical strength requirement of low breakage rate in the water conservancy shearing action with different strengths and the collision process between filter materials. The better hardness can make the filter material maintain the original size and shape even if the filter material is used for years in the filtering process;

(2) abrasion resistance: the filter material is required to have higher corrosion resistance, so that the abrasion degree of the filter material in the later stage of back flushing or when the film hanging amount is small can be reduced;

(3) void fraction and surface roughness: the filter material is required to have certain space rate and roughness, so that the attachment and growth of microorganisms are facilitated, and the most important significance is that: the excessive falling of the immobilized microbial membrane formed by collision and collision of the filter materials in the scouring process is reduced, and the requirement of the basic biomass in the early stage (after scouring) of the periodic operation of the biological filter is ensured, so that the effluent quality is relatively stable.

(4) The biological and chemical stability is good: the biological membrane can generate a plurality of metabolic products in the new process of development, and certain metabolic products can generate corrosion action on the filter material, so that the biological filter material needs to have certain chemical stability and corrosion resistance, does not participate in biochemical reaction of the biological membrane, and does not carry out biodegradation.

(5) Appearance electrical property and hydrophilicity: the microbes are generally negatively charged and hydrophilic, so that the positive charges on the outer surface of the filter material are favorable for the microbes to be fixed and grow, and the same hydrophilicity on the outer surface of the filter material is favorable for the attachment of the microbes.

(6) Wet density: the wet density of the filter material is too high, so that the filter material is difficult to suspend and swell during back flushing, or the filter material is added with energy consumption during back flushing, even the filter material is not clean after being flushed, and the filter material is conveyed for a long time to cause hardening. The density is too low to suit the operation condition of the filter material in the reactor, so the wet density of the filter material needs to be planned.

(7) The grading of the filter material has important influence on the operation of the biological aerated filter. The grading of the filter material not only influences the BOD and SS concentrations of effluent, but also influences the growth speed of head loss and the operation period of the filter. The smaller the grain size of the filter material is, the smaller the corresponding solid capacity (pollutant carrying capacity) is, the larger the head loss is, the shorter the operation period of the filter tank is, but the better the effluent quality is.

Filter material gradation/mm	Solid capacity (kg/m)³)
		2--4	1.0---1.5
3--6	2.2---2.7
		4--8	3.0---3.5

The aeration biological filter tank sewage treatment process is characterized in that:

firstly, sewage passes through a filter material layer, pollutants contained in a water body are intercepted by the filter material layer and are degraded and converted by organisms attached to the filter material, meanwhile, dissolved organic matters and specific substances are also removed, the generated sludge is kept in the filter layer, and only purified water passes through the filter layer, so that complete biological treatment can be achieved in a closed reactor without arranging a secondary sedimentation tank at the downstream for sludge sedimentation. Secondly, a water inlet pipe and a sludge discharge pipe are arranged at the bottom of the filter tank, a packing layer is arranged at the middle upper part, the thickness is generally 2.5-3.5 m, a concrete baffle plate provided with a filter head is arranged above the filter bed for preventing the filter material from losing, the filter head can be detached from the plate surface, the filter bed is not required to be emptied, and the filter bed is convenient to maintain. The space above the baffle serves as a water storage area for backwash water, the height of which is determined by the backwash water head.

A backflow pump is arranged in the area and used for pumping the water discharged from the filter tank to a water distribution gallery and then reflows to the bottom of the filter tank to realize denitrification, and the backflow system is not used in the process without denitrification. The space between the bottom of the filler layer and the bottom of the filter chamber is reserved for filler expansion during backwashing regeneration.

And the air supply system of the filter tank is divided into two pipelines, a process air pipe arranged in the filler layer is used for process aeration (oxygen aeration is mainly provided by an aeration fan), and the filler layer is divided into an upper area and a lower area: the upper part is an aerobic zone and the lower part is an anoxic zone. According to different raw water qualities and treatment purposes and requirements, the packing layers have different heights, and the proportion of the aerobic zone and the anaerobic zone is correspondingly changed; the air pipeline at the bottom of the filter tank is a back flush air pipe.

3. Filtration section

Quartz sand filter for filteringGranularity of quartz sand: 8_～16mm,4_～8mm,2_～4 mm. Or a multi-media filter.

Thirdly, the characteristics of the whole equipment.

1. According to the different water inflow, the modular configuration is carried out, and the water treatment amount of a single device is 200-³And/d is unequal.

2. The integrated equipment runs automatically, can be unattended, is simple to operate and maintain, and realizes automatic water inlet, water outlet, backwashing, aeration and the like.

3. The equipment does not produce sludge in operation, thereby avoiding secondary pollution and secondary treatment.

4. The occupied area is small, the device can be arranged outside and buried underground, the treatment efficiency is high, and the device can completely reach the standard especially for the treatment of urban domestic sewage.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. Integrated sewage treatment equipment comprises an oxidation pond (14), a biological aerated filter (15) and an air pipe (1), and is characterized in that the left lower end of the oxidation pond (14) is connected with the air pipe (1), the lower side of the air pipe (1) is connected with an inlet pipe (2), a filler (3) is arranged in the oxidation pond (14), the right end of the oxidation pond (14) is provided with an outlet pipe (4), the left lower end of the biological aerated filter (15) is connected with a water distribution tank (5), the upper end of the water distribution tank (5) is connected with the outlet pipe (4), the left side of the lower end of the biological aerated filter (15) is provided with a backwashing inlet pipe (7), the right side of the backwashing inlet pipe (7) is connected with a backwashing inlet pipe (8), the inner lower side of the biological aerated filter (15) is provided with a special filter head (9), the right end of the biological aerated filter, a normal drain pipe (13) is arranged at the right side of the back washing water outlet (12).

2. The integrated sewage treatment apparatus according to claim 1, wherein a grating support is provided on the lower side of the packing (3).

3. The integrated wastewater treatment equipment according to claim 1, wherein the lower end of the oxidation pond (14) is provided with an emptying valve.

4. The integrated sewage treatment apparatus according to claim 1, wherein a plurality of single-hole membrane air diffusers (11) are provided on the aeration pipe (10).

5. The integrated sewage treatment apparatus according to claim 1, wherein a biological filter material (6) is provided at an inner upper side of the biological aerated filter (15).