TWM585787U - Sewage disposal system - Google Patents

Abstract

This creation is a sewage treatment system, which includes a pretreatment device, an adjustment tank, a fermentation tank, a decomposition tank, a digestion tank, a sink tank and a drainage tank connected in sequence; the sewage has been The pre-treatment sewage removal equipment removes most of the larger pollutants to reduce the load of the subsequent biological treatment, and then uses microorganisms to purify the sewage in at least three tanks (fermentation tank, decomposition tank and digestion tank), so the sewage can be After at least three purifications, it is more suitable for today's more polluted sewage. At the same time, the sink tank can return the purified water to the inlet adjustment tank for dilution. Therefore, even if the pollution degree of the incoming water is serious, it can also pass through. Dilution to avoid overloading the sewage treatment system; this creation can effectively ensure that the treated water can reach various standards.

Description

Sewage treatment system

This creation relates to a sewage treatment system, especially an underground sewage treatment system used in hospitals, funeral facilities, etc., and it is through biological treatment that the sewage can reach the national discharge standard without the problem of sludge discharge.

The prior art sewage treatment system has been developed to use biological treatment instead of chemical or dosing to treat sewage, so as to avoid problems such as secondary pollution caused by chemical agents and sludge discharge.

Such as Taiwan Patent No. 585841, which is mainly provided with an adjustment tank, a decomposition tank, a contact aeration tank, a fermentation fermentation sedimentation tank, a digestion tank and a micro-aeration discharge tank in order. The adjustment tank is used to adjust the pH value and water volume of sewage. The decomposition tank then reduces the BOD (Biochemical oxygen demand) and COD (Chemical Oxygen Demand) in the water by using enzymes residing on the biological materials. Then contact the aeration tank through the ultra-micro aeration equipment to digest and denitrify the sewage. After that, the part below the barrier in the anaerobic fermentation sedimentation tank is subjected to anaerobic decomposition and sludge sedimentation, and the part above the barrier is subjected to aeration reduction to re-ferment the residual substances in the water. Finally, the digestion tank eliminates the reduction oxidation of impurities in the water. The aforementioned patent case comprehensively purifies the polluted organic sewage through different microorganisms without secondary pollution of sludge.

However, the disadvantages of the aforementioned patent cases are:

First, the sources and types of sewage are quite diverse, so there may be slightly larger volumes of pollutants in the water, and the sewage treatment system of the aforementioned patent case is difficult to effectively treat the slightly larger volumes of pollutants, and it is also impossible to avoid the pollution Into the sewage treatment system.

Second, with the evolution of technology and the development of industry, the current degree of pollution of sewage is becoming increasingly serious. The aforementioned patent case is based on the use of microorganisms to breathe or ferment carbohydrates for digestion. There are a total of six tanks, but only two of them have microorganisms added, and the microorganisms in only two tanks are not enough to purify sewage with increasing pollution.

Third, as mentioned above, the current pollution level of sewage is getting more and more serious, and excessively high concentration of sewage may exceed the load of the sewage treatment system, resulting in that the treated water still cannot meet various standards.

Fourth, the aforesaid patent has a blower to supply air to the aeration equipment. However, the blower in the previous case is suspended and is located above each tank. This is not only noisy, but because each tank needs to be set up separately. One blower, so more manhole covers are needed.

In summary, the sewage treatment system in the prior art needs to be improved.

In view of the aforementioned shortcomings and shortcomings of the prior art, the present invention provides a sewage treatment system that includes microorganisms in more than three tanks to enhance the overall ability to purify water quality.

In order to achieve the above-mentioned creation purpose, the technical means adopted in this creation is to design a sewage treatment system, which includes:
An adjustment slot;
A fermentation tank is connected to the rear of the adjustment tank, and the microorganisms are used to purify the sewage in the fermentation tank. The fermentation tank decomposes the macromolecular organic matter in the sewage into simple organic matter, and decomposes and digests the low molecular organic matter;
A decomposition tank is connected to the rear of the fermentation tank, and microorganisms are used to purify the sewage in the decomposition tank. The decomposition tank strengthens the decomposition of the organic matter that has not been decomposed after the decomposition of the macromolecular organic matter to further digest the organic matter in the sewage;
A digestion tank is connected to the rear of the decomposition tank, and the sewage is purified by microorganisms in the digestion tank. The digestion tank cultivates extinct microbiota to swallow the decayed matter and dead bacteria in the sewage, and to decay Digestion and decomposition of biomass and dead flora into carbon dioxide and water;
A drain tank is connected behind the digestion tank.

The advantage of this creation is that by using microorganisms to purify sewage in at least three tanks (fermentation tank, decomposition tank and digestion tank), the sewage can be purified at least three times, compared to only two tanks in the prior art. With microorganisms, at least three purifications of this creation are more suitable for sewage with more serious pollution today; this creation can effectively increase the load of the sewage treatment system by setting more tanks with microorganisms, thereby ensuring the Water can reach various standards.

Further, the sewage treatment system further includes a pre-treatment pollution-retaining device, and the adjustment tank is provided behind the pre-treatment pollution-retaining device. The pre-treatment sewage-removal device removes most of the larger sewage in the sewage.物 Remove.

Further, in the sewage treatment system, the pre-treatment sewage interception device includes a plurality of fine screen fences arranged at intervals.

Further, in the sewage treatment system, a pumping motor and a level control device are provided in the adjusting tank, and the pumping motor periodically pumps the sewage in the adjusting tank into the fermentation tank.

Further, in the sewage treatment system, at least one aeration tube is provided at the bottom of the adjustment tank; at least one aeration tube is provided at the bottom of the fermentation tank; at least one aeration tube is provided at the bottom of the decomposition tank. An aeration tube; at least one aeration tube is arranged at the bottom of the digestion tank.

Further, the sewage treatment system further includes a submerged blower connected to the at least one aeration pipe of the adjustment tank, the at least one aeration pipe of the fermentation tank, and the at least one of the decomposition tank. An aeration tube and the at least one aeration tube of the digestion tank.

Further, the sewage treatment system further includes a re-digestion tank located between the digestion tank and the drainage tank, the re-digestion tank is connected to the rear of the digestion tank, and the drainage tank is connected to the re-digestion tank. Behind the digestion tank; the re-digestion tank is used to purify sewage through microorganisms.

Further, in the sewage treatment system, at least one aeration pipe is provided at the bottom of the re-digestion tank.

Further, the sewage treatment system further includes a sink tank located between the digestion tank and the drain tank, the sink tank is connected to the rear of the digestion tank, and the drain tank is connected to the drain. Behind the sinking tank, the sinking tank is connected to the adjusting tank, and part of the water in the sinking tank will flow back to the adjusting tank to dilute the sewage in the adjusting tank.

Further, in the sewage treatment system, an airlift device and an electromagnetic controller are passed through the sink tank, so that the water of the sink tank is periodically returned to the adjustment tank in a small amount.

Further, in the sewage treatment system, an inner wall surface and a bottom of the sinker are formed into a tapered shape with an upper width and a lower width.

Further, in the sewage treatment system, the microorganisms used in the fermentation tank, the microorganisms used in the decomposition tank, and the microorganisms used in the digestion tank are all the same, and the amount of microorganisms used in the fermentation tank, the The amount of microorganisms used in the decomposition tank and the amount of microorganisms used in the digestion tank were sequentially reduced.

In the following, with reference to the drawings and the preferred embodiments of this creation, the technical means adopted by this creation to achieve the intended purpose is further explained.

Please refer to FIG. 1 and FIG. 2. The sewage treatment system of this creation includes a pre-treatment sewage holding device 10, an adjustment tank 20, a fermentation tank (biochemical one tank) 30, a decomposition tank (biochemical two tank) 40, One digestion tank (three biochemical tanks) 50, repeated digestion tank (biochemical four tanks) 60, one sink tank 70, one drainage tank 80, and a submerged blower 90; the sewage enters the pre-treatment sewage blocking device 10 and enters In the adjustment tank 20, it sequentially passes through the fermentation tank 30, the decomposition tank 40, the digestion tank 50, and the digestion tank 60 and undergoes various purifications, and finally flows to the sink tank 70, and a small part of the water in the sink tank 70 passes through another A path is returned to the adjustment tank 20 to dilute the concentration of sewage in the adjustment tank 20, and most of the water in the sink tank 70 flows to the drainage tank 80 and is discharged. The following description will be made for each facility.

The sewage is collected by the regional water collecting pipe and then enters the pre-treatment sewage blocking device 10 to remove most of the larger pollutants in the sewage. The pre-treatment sewage blocking device 10 operates reliably and functions, which can reduce the load of biological treatment in the later stage. In this embodiment, the pre-treatment sewage blocking device 10 is provided with two sets of fine screen fences 11 at the water inlet. Each set of fine screen fences 11 includes a plurality of fine screen fences 11 arranged at intervals. It is between 8 mm and 12 mm, and preferably 10 mm, but the specific structure of the pre-treatment pollution-retaining device 10 is not limited to the foregoing.

The adjustment tank 20 is provided behind the pre-treatment pollution control device 10, and the adjustment tank 20 is a temporary storage tank for sewage. After the sewage is screened by the pre-treatment pollution control device 10 for large-scale pollutants, the sewage enters the adjustment tank 20, and the adjustment tank 20 A pumping motor 22 is provided therein, and the pumping motor 22 will regularly and quantitatively pump sewage into the fermentation tank 30 for processing. In this embodiment, an inflow water amount control valve 23 is further provided on the pipeline connected to the pumping motor 22 for convenient use. The biggest purpose of the adjustment tank 20 is to enter a large amount of water during the buffering operation time. In addition, a liquid level control device (not shown) is further provided in the adjustment tank 20 to assist in controlling the amount of water in the adjustment tank 20; The bottom of the adjusting tank 20 is provided with at least one aeration pipe 21, and the sewage enters the adjusting tank 20 to stay and perform hydrolysis and acidification.

The fermentation tank 30 (biochemical one tank) is connected behind the adjustment tank 20, and the microorganisms are used to purify the sewage in the fermentation tank 30. The effective microorganisms decompose the macromolecular organic compounds in the sewage into simple organic substances in the fermentation environment in the fermentation tank 30. It also decomposes and digests low-molecular organic matter; harmful bacteria and viruses are difficult to survive and die in a large amount in a fermentation environment; toxic and odor-producing substances are decomposed by special micro-biotic bacteria; the bottom of the fermentation tank 30 is provided with at least one exposure The air pipe 31 is aerated for 24 hours to fully supply oxygen; the water body flows into the decomposition tank 40 through the convection pipe without power (gravity flow).

The decomposition tank 40 (second biochemical tank) is connected behind the fermentation tank 30, and microorganisms are used to purify sewage in the decomposition tank 40. The decomposition tank 40 continues the fermentation tank 30 to decompose the organic matter that has not been decomposed after the decomposition of the macromolecular organic matter, and further decomposes the organic matter. Digest organic matter in sewage; at the bottom of the decomposition tank 40 is provided with at least one aeration pipe 41, which is aerated for 24 hours to supply air.

The digestion tank 50 (three biochemical tanks) is continued behind the decomposition tank 40, and microorganisms are used to purify the sewage in the digestion tank 50. The digestion tank 50 cultivates extinct microbiota, and the decayed and dead bacteria in the sewage are swallowed Thorough digestion and decomposition into carbon dioxide (CO ₂ ) and water (H ₂ O), forming a benign natural ecosystem. The microbial flora in the system reached a dynamic equilibrium and the number remained constant. The water body flows into the digestion tank 60 through a convection pipe. The bottom of the digestion tank 50 is provided with at least one aeration tube 51, which is aerated for 24 hours to help cultivate the aforesaid extinct microbiota.

The re-digestion tank 60 (biochemical four-slot) is connected behind the digestion tank 50. The re-digestion tank 60 uses microorganisms to purify sewage. The re-digestion tank 60 uses organic compounds and enzymes formed by bio-cultivation to multiply organic and inorganic The unit molecular body is more stable, and harmless ionization and molecular synthesis are partially reduced. The re-digestion tank 60 completes the final processing process. At least one aeration tube 61 is provided at the bottom of the re-digestion tank 60.

In this embodiment, the microorganisms used in the fermentation tank 30, the microorganisms used in the decomposition tank 40, the microorganisms used in the digestion tank 50, and the microorganisms used in the re-digestion tank 60 are the same; and as the water quality is purified, the fermentation tank 30 The amount of microorganisms used, the amount of microorganisms used in the decomposition tank 40, the amount of microorganisms used in the digestion tank 50, and the amount of microorganisms used in the re-digestion tank 60 are sequentially reduced; but not limited to this, fermentation The tank 30, the decomposition tank 40, the digestion tank 50 and the re-digestion tank 60 can also use different microorganisms, or change to other dosages.

The sink tank 70 is connected to the rear of the digestion tank 60. In addition to the subsequent drain tank 80, the sink tank 70 is also connected to the adjustment tank 20 through other paths. The sewage passes through the fermentation tank 30, the decomposition tank 40, the digestion tank 50, and the re-digestion tank. The digestion tank 60 performs a biochemical reaction, continuously purifies the sewage, and then flows back into the sink tank 70. It is equipped with an electromagnetic controller with an air-lift device and periodically returns a small amount. After treatment, the clean water is diluted to adjust the concentration of the sewage in the tank 20 and use it. Beneficial bacteria in the water reduce the odor of raw wastewater. In addition, in this embodiment, the inner wall surface and bottom of the sink tank 70 are tapered up and down to improve the organic sewage treatment of the sewage. The structure is not limited to the aforementioned air-lifting device, electromagnetic controller, and tapered shape with a wide width and a narrow width, as long as the water can be returned to the adjustment tank 20.

The drainage tank 80 is connected to the rear of the sink tank 70. After the sewage is treated in the foregoing tanks, the drainage tank 80 enters the drainage tank 80 and discharges. In this embodiment, the wall of the drainage tank 80 is provided with drainage holes. When the water level rises to the height of the drainage hole, it will naturally flow out of the drainage hole, but the way of drainage is not limited to this.

In addition, in other embodiments, the adjustment tank 20, the fermentation tank 30, the decomposition tank 40, the digestion tank 50, the re-digestion tank 60, the sink tank 70, and the drainage tank 80 may also adopt the aforementioned drainage hole design to allow the water body to conform Sequential flow, that is, holes are set between any two adjacent grooves, so when the water level in any one of the grooves reaches a certain height, it will automatically flow to the next groove; The water volume (water level) in these tanks will be reduced in order; however, the design of the water flow in these tanks is not limited to this, as long as it can flow to the next tank.

The submerged blower 90 is connected to the aeration tube 21 of the adjustment tank 20, the aeration tube 31 of the fermentation tank 30, the aeration tube 41 of the decomposition tank 40, the aeration tube 51 of the digestion tank 50, and the aeration tube of the re-digestion tank 60. 61, and supply gas to the aeration pipe. In this embodiment, an air control valve 91 is further provided between the submerged blower 90 and each aeration pipe for convenient use. In this embodiment, the submerged type The blower 90 is installed in the drain tank 80, but may be placed at other positions.

In summary, the sewage produced by this project has been pre-treated by the sewage treatment equipment 10 before entering the water to remove most of the larger pollutants to reduce the load of the biological treatment in the later stage; the sewage that enters in the four tanks (fermentation tank 30, Decomposition tank 40, digestion tank 50, and re-digestion tank 60) will be purified by microorganisms, so the sewage can be purified four times and is more suitable for sewage with more serious pollution today; meanwhile, the sink tank 70 can be used for The purified water is returned to the four tanks mentioned above, so that even if the polluted water entering the tank is more serious, the purified water can be diluted through the sink tank 70 to prevent the sewage from exceeding the load of the sewage treatment system. This can effectively ensure that the treated water can reach various standards.

Finally, the submersible blower 90 used in this creation can be installed only by using a small number of manhole covers, so it is very convenient to install on the square. In addition, the submersible blower 90 submerged in water is in use. It is also quieter; but if there are other needs, other forms of blowers can be used in this creation instead of the submerged blower 90, and even if the submerged blower 90 is not used, other types of blowers are used instead. , This creation can still achieve the many effects of the previous paragraph.

The foregoing is a preferred embodiment of the creation, but the foregoing can also be simplified according to circumstances. For example, the digestion tank 60 (biochemical four tank) and the sink tank 70 are not necessary devices for implementing the creative purpose of this creation. Therefore: In the embodiment of the digestion tank 60, the sink tank 70 is connected to the rear of the digestion tank 50. In the embodiment without the sink tank 70, the drain tank 80 is connected to the rear of the digestion tank 60. In the embodiment without the re-digestion tank 60 and the sink tank 70, the drain tank 80 is connected to the rear of the digestion tank 50.

The following further explains the structural characteristics and working principles of the biological treatment of this creation:

1. Principles of this creative process

The wastewater treatment system of this creation belongs to the biological treatment method. As long as the sewage passes through this creation, a large number of microbial flora are produced, and the bacilli and cocci play a special decomposition role. Because it has a residential effect, it is not easy to discharge with the water flow, so its function is quite stable and durable. The sewage treatment method of this creation can surface-pollute the polluted organic sewage, so there is almost no second-degree pollution of biological organic sludge.

2. Structural features and working principles of this creation

2.1. The basic structure and principle of this creation

Each biological treatment unit in the system of this creation is composed of a tank, an aeration system and a special biological incubator (contact material). Each biological treatment unit is an independent three-phase fluidized bed bioreactor. , Air, water and microorganisms contact on the surface of the incubator, providing a good place for the growth and reproduction of microorganisms.

This creation is similar to a natural ecosystem, with a long food chain consisting of many types of microorganisms. The bacterial flora living on the microbial incubator (contact material) is usually in a dormant state. When it comes into contact with wastewater and sugar fermentation broth, the bacterial group quickly changes from the dormant state to the active state. Organic matter in the wastewater is adsorbed to the bacteria in a short period of time (about 10-30 minutes), and soluble matter penetrates directly into the cells. The nutrients entering the cells are converted into simple inorganic substances such as carbon dioxide and water by a series of biochemical reactions under the action of intracellular enzymes. At the same time, energy is generated. Microorganisms use the energy released by respiration and the intermediate products produced in the oxidation process to synthesize cellular material, so that the bacteria multiply in large numbers. Microorganisms continuously carry out biological oxidation, and organic matter in the environment is continuously reduced, so that sewage is purified. When the species and number of microbial reproduction reach a certain level, they can stimulate the appearance of small protozoa, and eventually emerge metazoans that can hunt protozoa. The dead protozoa and metazoan carcasses are eventually broken down by bacteria. The system of this creation has special extinct microorganisms, which can control the number of microorganisms, make the microorganisms in the system reach a dynamic balance, keep circulating, reduce organic matter, and purify the sewage.

The simulated ecosystem can be divided into convection areas (areas with high oxygen content), no convection areas at the corners of the reaction tank (the oxygen content is almost minimal), and areas at the junction of the two areas (containing oxygen) (The amount is higher than the best living environment for the microbiome at the corner of the reaction tank), so that different microorganisms can breathe and ferment carbohydrates for further digestion.

2.2. Features of the system of this creation

The system of this creation uses special technology, so it has many unique features. The characteristics and key of this technology are:

(1) Special living biological incubator (contact material)

The living biological incubator in this creation is a specially processed wooden vessel, which removes the components that are liable to spoil, and preserves a certain amount of cellulose, lignin and pentosan components, which are physically processed to achieve Suitable for the growth of microbial flora requires a porosity of 75 to 85%, which makes it suitable for the living of microorganisms. After the cultivation and cultivation of microorganisms, it becomes a living incubator. The biological incubator makes the microbial flora difficult to lose and the bacterial phase tissue is stable. 2. High efficiency in the treatment of organic matter. The biological incubator in the system does not need to be replaced. It consumes about 6 每年 per year and belongs to semi-permanent use. The biological incubator is semi-suspended in water, which increases the contact area of gas, liquid and solid three phases.

(2) Special multi-genus environmental flora

The microbiome in the system of this creation is coexisted on a special biological incubator by a variety of environmental microbial groups of different genus coexisting. It has a large amount of biomass per unit volume and is rich in biological phase, and has high biological activity. It can quickly decompose organic matter, eliminate hydrogen sulfide, Ammonia nitrogen and other substances.

(3) Aeration device with super strong effect

The aeration tube with ultra-fine air supply function developed by using special materials. The tube is provided with small I-shaped pores, and the cross-section of the pores has a certain slope, so that the bubbles are not only small and dense, but also automatically when the air supply is stopped. Cover to prevent clogging. The aeration tube is of excellent material, advanced technology and good inflation effect, and it is easy to form the hydraulic state required for biological purification.

The aeration device can achieve the following four functions:

a. Micro-bubble generation: with high oxygen dissolution rate.

b. Ultrasonic bubble movement: It has a high degree of chemical interaction.

c. High-speed water flow: The water flow is strong and quiet.

d. Microbacterial group effect: promote the generation of a large number of microbacterial groups.

(4) Provide an environmental area suitable for the survival of anaerobic, facultative and aerobic bacteria

Because the depth of the pores in the biological incubator (contact material) is different, the distribution of aeration is uneven, so an anaerobic zone, facultative zone and aerobic zone are formed within a certain range. In this way, the sewage has to go through aerobic, facultative and anaerobic processes repeatedly when passing through each treatment tank, which greatly enhances the sewage treatment effect. Due to the special good environment provided by this creation, the system is rich in biological phases and high biological activity, forming a very good ecosystem. Pollutants are almost completely decomposed without generating residual organic sludge.

2.3. How this system works

Due to its special processing structure, the system of this creation provides a good environment for the growth and reproduction of microorganisms, so that various pollutants can be effectively removed. The process of degrading pollutants in the system of this creation is a rather complicated biochemical process. The removal of various pollutants is usually carried out simultaneously, affecting each other and promoting each other. The mechanism of this author's removal of various pollutants is briefly described as follows:

(1) Rapid decomposition of organic matter and organic matter with poor biodegradability

(2) Inhibition and elimination of organic acids, H ₂ S, NH ₃ ^- N

a. Elimination of organic acids

Relying on the internal loop process of the bioreactor, the organic acid produced by facultative bacteria is quickly decomposed by aerobic bacteria and anaerobic bacteria, so that the system is free of organic acid odor.

b. Elimination of NH ₃ ^- N

Organic acids are ammoniated to NH ₄ ⁺ by ammoniating bacteria, and then oxidized by nitrifying bacteria to form nitrite and nitrate, and then denitrifying bacteria to remove nitrogen under anaerobic conditions.

c. Elimination of sulfide

The sulfide in this creation can be oxidized by microorganisms in three ways:

The first method is oxidation by sulfur-bacteria represented by Thiobacillus. Thiobacillus belongs to a class of aerobic microorganisms and is obligate or facultative autotrophic bacteria. They mainly rely on oxidizing sulfide, elemental sulfur or thiosulfate as sulfuric acid or sulfate.

The second is oxidation by filamentous sulfur bacteria. Filamentous sulfur bacteria represented by sulfur bacteria and sulfur-producing bacteria can oxidize H ₂ S into elemental sulfur and accumulate in cells. When needed, the cell can oxidize the sulfur stored in its own body and obtain energy. The oxidation process is:

The third is oxidation by photosynthetic sulfur bacteria. Green sulfur bacteria and sulfur bacteria and red sulfur bacteria in photosynthetic bacteria can oxidize H ₂ S to elemental sulfur. Red sulfur bacteria can further oxidize H ₂ S to sulfate. The oxidation process is:

(3) Biological nitrogen removal

Biological denitrification is divided into two reaction processes, nitrification and denitrification. Bio-nitrification is a biochemical reaction process by which nitrifying bacteria of the autoenergetic type oxidizes ammonia nitrogen to nitrate. This process needs to be completed in an aerobic environment. Biological denitration is a process by which heterotrophic denitrifying bacteria reduce nitrate to nitrogen. This process needs to be completed under an anaerobic environment and a sufficient carbon source. The process of nitrification and denitration reactions is:

Nitrification reaction:

Denitrification reaction:

In the system of this creation, anaerobic and aerobic environments exist at the same time, and microorganisms can repeatedly perform nitrification and denitrification reactions. This strengthens the biological nitrogen removal effect, and compared with traditional biological treatment, the nitrogen removal efficiency is greatly improved.

(4) Biological phosphorus removal

In the bioreactor of this creation, phosphorus bacteria such as Serratia can expand organic phosphorus, and bacteria such as nitrifying bacteria can convert insoluble phosphate to soluble phosphate. Under the synergistic action of various microorganisms, phosphate can be reduced to phosphine and escape, and its action process is:

Briefly, each tank of the sewage biological treatment system of this creation contains aerobic decomposing bacteria and anaerobic digesting and decomposing bacteria, so organic matter can be decomposed by aerobic decomposition and anaerobic digestion; aerobic Decomposition uses aerobic oxidative decomposition to quickly decompose and convert organic substances such as carbohydrates, fats, proteins, etc., and prevent denitrification and desulfurization, so it effectively controls odor. As for the anaerobic digestion, the sludge is decomposed and digested by aerobic hydrolysis digestion for biological sludge, which solves the important problem of the reduction of the capacity of the treatment tank caused by the sludge accumulation. The sludge generated during the sewage treatment process has almost no reason in this system. We call it a sludge-free sewage treatment system.

The biological flora in the tank of this creation absorbs and utilizes ammoniated nitrogen and hydrogen sulfide gas and converts them into salt machine and sulfur amino acid, and decomposes the sediment in the lower layer of the sewage treatment tank through denitrification and desulfurization. Transformed into nitrogen and sulfur oxides. Because the system contains no chemicals, is non-toxic and non-corrosive, it is harmless to humans, safe and reliable.

At the same time, the ultra-fine aeration system installed in the treatment tank can fully agitate the sewage to achieve high dissolved oxygen efficiency, and thus inhibit the growth of spoilage bacteria to reach the discharge water standard.

3． Economic Benefit Analysis of the Creative Biological Treatment System

The biological sewage treatment system created by this creation is a new, high-efficiency and economic sewage treatment method. It can be used for the biochemical treatment of various organic wastewater, especially suitable for the treatment of biochemical organic wastewater, without the need to add any chemical agents, advanced technology, high treatment efficiency, no secondary pollution, stable and reliable operation, economic investment and operating costs.

3.1. Comparison between the system of this creation and the conventional sewage biological treatment method

3.1.1.1. A comparison of the process, operation and maintenance, environmental impact, treatment efficiency and stability of the system of this creation with the conventional sewage biological treatment method is as follows:
project Conventional sewage biological treatment equipment The biological flora sewage treatment system of this creation Process flow Long flow, many steps, many equipment specifications, and complicated treatment of remaining activated sludge Simple process, few types of equipment, no residual activated sludge treatment process Operation and maintenance Complex operation control and heavy equipment maintenance workload Simple operation and low maintenance costs Impact on the environment Due to the slow decomposition rate of the pollutants, there are a large amount of hydrogen sulfide, ammonia and methane, and unique odorous gases are generated, which are easy to breed mosquitoes and germs Fast decomposition of pollutants, no generation of hydrogen sulfide, ammonia and methane, no odor, no breeding of mosquito and fly, no pollution to the environment Processing efficiency Due to the use of natural bacteria, the cultivation method is unstable and the processing efficiency is low Adopt the system of this creation to stabilize the flora cultivation and high processing efficiency stability Unstable operation due to natural flora performance Stable operation performance, good resistance to seasonal changes and fluctuating sewage concentration

The above description is only the preferred embodiment of the creation, and does not limit the creation in any form. Although the creation has been disclosed as above with the preferred embodiment, it is not intended to limit the creation. Generally, a knowledgeable person can use the technical content disclosed above to make some changes or modifications to equivalent equivalent embodiments without departing from the scope of the technical solution of the creation. Any content that does not depart from the technical solution of the creation according to this The technical essence of the creation Any simple modifications, equivalent changes, and modifications made to the above embodiments still fall within the scope of this creative technical solution.

10‧‧‧Pre-treatment pollution control equipment

11‧‧‧fine screen fence
20‧‧‧ Adjustment slot

21‧‧‧ aeration tube
22‧‧‧ Pumping motor

23‧‧‧Inlet water volume control valve
30‧‧‧ fermentation tank

31‧‧‧aeration tube
40‧‧‧ Decomposition tank

41‧‧‧aeration tube
50‧‧‧Digestive trough

51‧‧‧aeration tube
60‧‧‧Digestive tank

61‧‧‧aeration tube
70‧‧‧Backward sink

80‧‧‧ Drain trough
90‧‧‧ Submersible Blower

91‧‧‧Air Control Valve         

Figure 1 is a schematic side view of this creation.
Figure 2 is a schematic diagram of this creation.

Claims (12)

A sewage treatment system comprising:
An adjustment slot;
A fermentation tank is connected to the rear of the adjustment tank, and the microorganisms are used to purify the sewage in the fermentation tank. The fermentation tank decomposes the macromolecular organic matter in the sewage into simple organic matter, and decomposes and digests the low molecular organic matter;
A decomposition tank is connected to the rear of the fermentation tank, and microorganisms are used to purify the sewage in the decomposition tank. The decomposition tank strengthens the decomposition of the organic matter that has not been decomposed after the decomposition of the macromolecular organic matter to further digest the organic matter in the sewage;
A digestion tank is connected to the rear of the decomposition tank, and the sewage is purified by microorganisms in the digestion tank. The digestion tank cultivates extinct microbiota to swallow the decayed matter and dead bacteria in the sewage, and to decay Digestion and decomposition of biomass and dead flora into carbon dioxide and water;
A drain tank is connected behind the digestion tank. The sewage treatment system according to claim 1, further comprising a pre-treatment pollution-retaining device, the adjusting tank is provided behind the pre-treatment pollution-retaining device, and the pre-treatment pollution-retaining device removes most of the larger sewage in the sewage.物 Remove. The sewage treatment system according to claim 2, wherein the pre-treatment pollution control equipment comprises a plurality of fine-screened fences arranged at intervals. The sewage treatment system according to any one of claims 1 to 3, wherein a pumping motor and a level control device are provided in the adjusting tank, and the pumping motor periodically pumps the sewage in the adjusting tank into the fermentation. In the slot. The sewage treatment system according to any one of claims 1 to 3, wherein:
At least one aeration pipe is provided at the bottom of the adjustment tank;
The bottom of the fermentation tank is provided with at least one aeration tube;
The bottom of the decomposition tank is provided with at least one aeration pipe;
The bottom of the digestion tank is provided with at least one aeration tube. The sewage treatment system according to claim 5, further comprising a submerged blower connected to the at least one aeration pipe of the adjustment tank, the at least one aeration pipe of the fermentation tank, and the at least one of the decomposition tank. An aeration tube and the at least one aeration tube of the digestion tank. The sewage treatment system according to any one of claims 1 to 3, further comprising a re-digestion tank located between the digestion tank and the drainage tank, the re-digestion tank being connected to the rear of the digestion tank, the The drainage tank is connected behind the re-digestion tank; the re-digestion tank is used for purifying sewage through microorganisms. The sewage treatment system according to claim 7, wherein the bottom of the digestion tank is provided with at least one aeration pipe. The sewage treatment system according to any one of claims 1 to 3, further comprising a sink tank located between the digestion tank and the drain tank, the sink tank continuing behind the digestion tank, the The drainage tank is connected behind the sink tank, the sink tank is connected to the adjustment tank, and a part of the water in the sink tank is returned to the adjustment tank to dilute the sewage in the adjustment tank. The sewage treatment system according to claim 9, wherein an airlift device and an electromagnetic controller are passed through the sink tank, and the water of the sink tank is periodically returned to the adjustment tank in small amounts. The sewage treatment system according to claim 9, wherein the inner wall surface and the bottom of the sinking tank are tapered with a wide width and a narrow bottom. The sewage treatment system according to any one of claims 1 to 3, wherein the microorganisms used in the fermentation tank, the microorganisms used in the decomposition tank, and the microorganisms used in the digestion tank are the same, and the fermentation tank uses The amount of microorganisms, the amount of microorganisms used in the decomposition tank, and the amount of microorganisms used in the digestion tank were sequentially reduced.