WO2010075641A1

WO2010075641A1 - Apparatus for treating wastewater

Info

Publication number: WO2010075641A1
Application number: PCT/CN2008/002151
Authority: WO
Inventors: 许水源
Original assignee: Xu Shuiyuan
Priority date: 2008-12-31
Filing date: 2008-12-31
Publication date: 2010-07-08

Abstract

An apparatus for treating wastewater is provided, which comprises seven tanks connected by an H type pipe (14) in series. The seven tanks are a regulating tank (1), a first biochemical tank (2), a second biochemical tank (3), a third biochemical tank (4), a fourth biochemical tank (5), a recycling tank (6) and a discharge tank (7). Microorganisms, woody bio-supports (9) and aerating pipes (12) at a certain distance from the tank bottom are provided in the regulating tank (1) and the biochemical tanks (2, 3, 4, 5). A sludge recycling pump (11) is provided in the recycling tank (6) and aerating pipes (12) are provided at the bottom of the discharge tank (7).

Description

Sewage treatment unit

(I) Technical Field - The present invention relates to a sewage treatment apparatus, and more particularly to a sewage treatment apparatus capable of completely eliminating organic substances and organic biological sludge in a sewage treatment tank and eliminating the odor of the entire apparatus to achieve a sewage purification effect. It belongs to the field of environmental protection equipment technology.

(II) Background technology - At present, the sewage treatment devices used in domestic sewage, food manufacturing sewage, catering wastewater, livestock sewage, etc. are mainly activated sludge method and biofilm method. However, this treatment method is It will cause the production of residual organic sludge, which will cause serious pollution of the environment. At the same time, general domestic sewage and industrial waste water contain proteins, fats, carbohydrates and other substances, which are easily odorized after being treated by a conventional sewage device. Stench is easy to cause the breeding of mosquitoes and flies, endangering human health.

The traditional sewage treatment process is shown in Figure 1

The organic sludge treatment process is shown in Figure 2

In the traditional sewage treatment, the sewage first enters the pool in which the grid is placed, pre-treats and then enters the grit chamber or the adjustment tank, and then passes the activated sludge method, the biofilm method, the rotating biological disk method, the aerated cerium oxide method, Biological treatment methods such as nitrification and dehydration treatment are used to treat sewage, and then physicochemical methods such as coagulation sedimentation, air-floating oil separation, sand filtration, and activated carbon adsorption are used to treat sewage, and then discharged after reaching the standard. The disposal of organic sludge needs to be carried out by processes such as nitrification, concentration, dehydration and drying, and finally legally buried.

The shortcomings of traditional sewage treatment are as follows:

The process is complicated, the process is troublesome, and the effect is not good;

2. The traditional process has low decomposition efficiency and incomplete treatment, so it is impossible to completely eliminate the organic sludge in the sewage pool. It must not be eliminated after a certain period of time. It is time-consuming and labor-intensive, and it will produce foul odor. Affects environmental sanitation.

3. Because each tank is treated by sludge sedimentation, the position of each inlet and outlet must not be at the same level. Therefore, the construction is often restricted by terrain and it is difficult to construct or construct.

(3) Invention content: 1. Purpose:

In order to overcome the deficiencies of the prior art, the object of the present invention is to provide a sewage treatment apparatus which can completely eliminate organic matter and organic biological sludge in a sewage treatment tank and eliminate the odor of the entire apparatus to achieve the effect of sewage purification.

Technical solutions:

The invention relates to a sewage treatment device which is composed of a combined sewage treatment tank; the combined sewage treatment tank is composed of seven parallel and connected pool units, which are respectively according to the sewage flow sequence: , No. 1 biochemical pool, No. 2 biochemical pool, No. 3 biochemical pool, No. 4 biochemical pool, return pool and discharge pool; the adjustment tank is the first sewage receiving pool, and the upper left end of the pool is provided with sewage inlet and interception a grille for a larger floating object, a lift pump and an aeration pipe for conveying sewage are arranged at a lower portion of the pool; the No. 1 biochemical tank is connected with an outlet pipe of a lift pump in the regulating tank, and the tank is provided with a wooden biological carrier and exposed The trachea; the wooden bio-carrier is made by mechanically processing the natural wood into a certain size and shape, mainly providing a hosting space for the microorganisms, and the wooden biological carrier is added at a time without replacement; the No. 1 biochemical pool is In the fermentation environment, the macromolecular organic matter in the sewage is decomposed into simple small molecule organic matter, and the low molecular organic matter is degraded, thus, the virus and The harmful bacteria are difficult to survive in the environment of the pool. The toxic and gas-producing substances are decomposed by microorganisms, and the whole process is non-toxic and has no odor. The No. 2 biochemical pool is connected to the No. 1 biochemical pool through the contour H tube. The pool is provided with a wooden biological carrier and an aeration tube, and a liquid microbial preparation is added to the pool to establish a special environment, and the fermented matter and harmful bacteria are decomposed and removed in the pool, and the organic matter in the sewage is further degraded; The biochemical pool is connected to the biochemical pool No. 2 through the contour H tube. The pool is provided with a wooden biological carrier and an aeration tube, in which the microorganisms swallow the decayed and dead bacteria in the sewage and thoroughly digest it. Decomposed into C02 and H20, and finally the system has no sludge efflux; the No. 4 biochemical pool is connected to the No. 3 biochemical pool through the contour H tube, which is provided with a wooden biological carrier and an aeration tube. The pool uses a variety of enzyme enzymes formed by microbial reproduction to make the organic and inorganic unit macromolecules more stable and harmless, so that the sewage can be further purified. The returning pool is connected to the biochemical tank No. 4 through the contour H pipe, and a microbial storage bucket and a reflux pump are arranged in the lower part of the pool, and the microorganisms in the storage bucket are lifted to the regulating pool grill by the reflux pump. Wherein, in order to facilitate the re-treatment of the sewage; the discharge pool is connected to the return tank through the contour H pipe, the aeration pipe is arranged at the bottom of the discharge tank, and the sewage discharge port is arranged at the right end of the tank, and the sewage is treated by the above-mentioned pools, sewage It becomes clean water and flows away from the discharge port. The microorganism The preparation is based on the flora of the natural environment (market purchase), which has the ability to decompose harmful organic pollutants into harmless inorganic substances. The device mainly uses microorganisms to degrade pollutants. According to the volume of the above four biochemical pools, the microorganisms are separately placed in each of the cells in a predetermined amount. When the device is in normal operation, the microorganisms can use the organic substances in the sewage as a nutrient source, and continuously in the four biochemical pools. It is long and prosperous. The aeration tube is disposed in the relevant treatment tank, and the surface of the aeration tube is covered with aeration micropores, which are connected to the blower through a valve and a air duct, and use the fresh air provided by the air blower to supply microorganisms on the one hand. On the other hand, it also acts to stir and accelerate the sewage. The aeration tube is erected at a predetermined height from the bottom surface of the treatment pool, and the wooden biological carrier cooperates with the aerated directional flow field to form a pile of different regions in the pool body (ie, the schematic diagram of the structure of the present invention as shown in FIG. 3) to ensure the inside of the pool. Continuous anaerobic/anoxic/aerobic state cycles to form environmental zones with different aerations to accommodate the oxygen supply and demand of various types of microorganisms, contribute to microbial metabolism and work, and create coexisting symbiotic microorganisms In the environment, the sewage is finally purified into odorless and odorless clean water to ensure good living environment and reduce environmental pollution.

The environment formed by the device is similar to the natural ecosystem. There are long food chains composed of various microorganisms in each treatment pool. It lives on the wooden biological carrier and is usually in a dormant state. When the sewage is contacted, the microorganisms are quickly in a dormant state. Turning to the active state, the organic matter in the sewage is adsorbed to the cells in a short period of time (about 10 to 30 minutes), the soluble substances directly penetrate into the cell membrane, and the nutrients entering the cells are under the action of the intracellular enzymes. After a series of biochemical reactions, the organic matter is converted into simple inorganic substances such as carbon dioxide and water, and energy is generated at the same time. Microorganisms use the energy released by respiration and the intermediate products produced during the oxidation process to synthesize cellular material, allowing the cells to multiply. Microorganisms continue to biooxidize, so that the organic matter in the environment is continuously reduced, so that the sewage is purified.

3 advantages and effects:

In the combined sewage treatment tank, microorganisms and aeration pipes whose surfaces are covered with aeration micropores and have a certain distance from the bottom of the tank are respectively placed, and the wooden biological carrier cooperates with the aerated directional flow field to form different regions in the pool body. (ie, as shown in the schematic diagram of the present invention in FIG. 3), various natural microbial communities in which various natural microorganisms can coexist and coexist, such as anaerobic, anoxic, and aerobic zones, rapidly decompose the organic substances in the sewage. It completely eliminates the phenomenon of residual organic sludge, effectively ferments, decomposes and digests organic substances, so that the entire treatment device does not produce odor, does not breed mosquitoes and flies, and purifies the sewage into odorless and odorless purified water. Completely achieve the effect of ecological environmental protection. The device is scientific in concept, reasonable in structure, and suitable for pushing Wide

(4) Description of the drawings:

Figure 1 Schematic diagram of a traditional sewage treatment plant

Figure 2 Schematic diagram of traditional sewage treatment organic sludge treatment

Figure 3 is a schematic structural view of the present invention

The symbols in the figure are as follows:

1 Regulating pool 1 No. 1 biochemical pool 3 No. 2 biochemical pool 4 No. 3 biochemical pool

5 4 biochemical pool 6 return pool 7 discharge pool 8 blower

9 wooden bio-carrier 10 lift pump 11 return pump 12 aeration tube

13 Grille 14 Contour connection H pipe 15 Storage bucket 16 Water pipe

17 Sewage water inlet 18 Sewage discharge port 19 Duct 20 Valve Fig. 3 ^ Sewage flow direction Air flow direction

(5) Specific implementation methods:

As shown in FIG. 3, the present invention relates to a sewage treatment device which is composed of a combined sewage treatment tank; the combined sewage treatment tank is composed of seven juxtaposed and connected pool units, according to the flow sequence of sewage. They are: conditioning pool No. 1 biochemical pool 2, No. 2 biochemical pool 3, No. 3 biochemical pool 4, 4 biochemical pool 5, return pool 6 and discharge tank 7; said conditioning tank 1, is the first sewage receiving a pool, a sewage inlet 17 and a grill 13 for trapping large floating objects are disposed at the upper left end of the pool, and a lifting pump 1 G and an aeration tube 12 for conveying sewage are disposed at a lower portion of the pool; The contour connecting H tube 14 is in communication with the regulating tank 1, and the wooden biocarrier 9 and the aeration tube 12 are disposed in the pool; the wooden biocarrier 9 is made by mechanically processing the natural wood into a certain size and shape. Mainly providing the hosthouse space for the microorganisms, the wooden bio-carrier 9 is added once and does not need to be replaced; the No. 1 biochemical pool 2 is to decompose the macromolecular organic matter in the sewage into simple small-molecule organic matter under the fermentation environment, and Low molecular organic Degradation, therefore, viruses and harmful bacteria are difficult to survive in the pool environment, toxic and gas-producing substances are decomposed by microorganisms, and the whole process is non-toxic and odorless; the No. 2 biochemical pool 3, through the contour connecting H tube 14 is connected to the biochemical pool 2, which is provided with a wooden biological carrier. 9 and the aeration tube 12, adding some liquid microbial preparations in the pool to establish a special environment, the fermented substances and harmful bacteria are decomposed and removed in the pool, and the organic matter in the sewage is further degraded; the biochemical pool No. 3 Connected to the No. 2 biochemical pool 3 through the contoured H tube 14 in which the wooden biocarrier 9 and the aeration tube 12 are disposed, in which the microorganisms swallow the decayed and dead bacteria in the sewage, thoroughly The digestion is decomposed into (0 ₂ and 3⁄40, and finally the system is free of sludge efflux; the No. 4 biochemical tank 5, connected to the H tube through the contour; is connected with the No. 3 biochemical tank 4, which is provided with a wooden biological carrier 9 And the aeration tube 12, wherein the organic and inorganic unit macromolecules are more stably and harmlessly ionized by using a plurality of enzyme enzymes formed by microbial propagation in the pool, thereby further purifying the sewage; The return pool 6 is connected to the No. 4 biochemical tank 5 through the contoured H tube 14 , and a microbial storage bucket 15 and a reflux pump 11 are arranged in the lower part of the pool; the water flowing in from the No. 4 biochemical pool 5 is due to the action of gravity On the return trip 6 performing solid-liquid separation, the solid phase microorganisms are transported to the grid 13 of the conditioning tank 1 via the reflux pump 11 and the water pipe 16, re-treating the sewage, and the resources are recycled; the discharge tank 7 is connected to the H-tube 14 by the contour Connected to the return pool 6, an aeration pipe 12 is disposed at the bottom of the discharge tank, and a sewage discharge port 18 is disposed at the right end of the discharge tank. After the treatment of the above-mentioned pools, the sewage becomes purified water and flows away from the sewage discharge port 18. Microorganisms, materials The flora in the natural environment, which has the ability to decompose harmful organic pollutants into harmless inorganic substances. The device mainly uses microorganisms to degrade pollutants. According to the volume of the above four biochemical pools, The predetermined number of microorganisms are respectively placed in each of the pool bodies. When the device is in normal operation, the microorganisms can use the organic substances in the sewage as a nutrient source, and continue to be proliferated in four biochemical pools. The aeration tube 12 is disposed at In the above treatment tank, the surface of the tube is covered with aeration micropores, which are connected to the blower 8 through the valve 20 and the air duct 19, and the fresh air provided by the blower 8 is used. The surface is required for the survival of the microorganisms, and on the other hand, the sewage is stirred and accelerated. The aeration tube 12 is placed at a predetermined height from the bottom surface of the treatment pool, and the wooden biological carrier 9 is combined with the aerated directional flow field. Forming different areas of accumulation in the pool body (ie, the schematic diagram of the structure of the present invention as shown in FIG. 3), so that the anaerobic/anoxic/aerobic state is continuously circulated in the pool to form an environmental area with different aeration amounts to adapt to various The oxygen supply and demand of different kinds of microorganisms contribute to the metabolism and work of microorganisms, create a microbial environment that coexists and symbiosis, and finally purify the sewage into odorless and tasteless clean water to ensure good living environment and reduce environmental pollution.

Claims

Claim

A sewage treatment device, characterized in that it consists of a combined sewage treatment tank; the combined sewage treatment tank is composed of seven pool units connected in parallel and connected, according to the flow sequence of the sewage, respectively Yes: Regulating pool, No. 1 biochemical pool, No. 1 biochemical pool, No. 3 biochemical pool, No. 4 biochemical pool, return pool and discharge pool;

The adjustment tank is the first sewage receiving tank. The upper left end of the tank is provided with a sewage water inlet and a grille for trapping large floating objects. The lower part of the tank is provided with a lifting pump and an aeration pipe, and the pump outlet leads to Biochemical pool

The biochemical pool No. 1 is connected to the regulating tank through a contour H pipe, and the pool is provided with a wooden biological carrier and an aeration tube; the wooden biological carrier is mechanically processed into a certain size and shape by natural wood. It is mainly provided for the hostage space of the microorganisms, and the wooden biological carrier is added once and does not need to be replaced; the surface of the aeration tube is covered with aeration micropores, which is connected to the blower through a valve and a duct; the aeration The pipe is placed at a predetermined height from the bottom surface of the treatment pool to form an environmental area with different aeration rates;

The biochemical pool No. 2 is connected to the biochemical pool No. 1 through a contour H tube, which is provided with a wood biocarrier and an aeration tube;

The No. 3 biochemical pool is connected to the No. 2 biochemical pool through a contour H tube, which is provided with a wood biological carrier and an aeration tube;

The No. 4 biochemical pool is connected to the No. 3 biochemical pool through a contour H tube, which is provided with a wood biocarrier and an aeration tube;

The return pool is connected to the biochemical tank No. 4 through a contour H pipe. The bottom of the pool is provided with a microbial storage bucket and a reflux pump, and the outlet of the return pump is connected to the regulating tank through a water pipe; the discharge pool is The contour H is connected to the return pool, and an aeration pipe is arranged at the bottom of the discharge tank, and a sewage discharge port is arranged at the right end of the pool. A sewage treatment device is composed of seven parallel and connected pool units, which are respectively: a regulating tank, a biochemical pool No. 1, a biochemical pool No. 1, a biochemical pool No. 3, a biochemical pool No. 4, a return pool And the discharge pool; in the seven pool units, the microorganisms, the wooden biological carrier and the aeration tube whose surface is covered with the aeration micropores and have a certain distance from the bottom of the tank, and the wooden biological carrier cooperate with the aerated directional flow field, The accumulation of different areas in the pool forms a simulated natural environment area in which the natural microbes can coexist and coexist, that is, anaerobic, anoxic, and aerobic zones, thus rapidly decomposing the organic matter in the sewage, thoroughly Eliminate the phenomenon of residual organic sludge, effectively ferment, decompose and digest organic substances, so that the entire treatment device does not produce odor, does not breed mosquitoes and flies, purifies the sewage into odorless and tasteless water, and completely achieves ecology. The effect of environmental protection. The device is designed to be a textbook with a reasonable structure and is suitable for promotion.

Want