CN209974394U - A super nanobubble circulating ozone sewage treatment device - Google Patents

Abstract

The utility model belongs to the technical field of sewage treatment, a super nanometer bubble circulation ozone sewage treatment plant is disclosed. The device comprises an ozone reaction kettle, an ozone generating head, a super nano bubble generator, a filtering device and a waste residue collector; the super nano bubble generator and the filtering device are positioned at the bottom in the cavity of the ozone reaction kettle, the top of the super nano bubble generator is communicated with the bottom of the filtering device, a purified water outlet extends from the inside of the filtering device to the outside of the ozone reaction kettle, and is provided with a three-way valve which is connected with a back washing pump of the filtering device; the top of the side surface of the ozone reaction kettle is provided with a sewage inlet and an ozone water inlet, the bottom of the side surface of the reaction kettle is provided with a COD detection head and a sewage outlet, and the sewage outlet flows to the ozone generation head and then enters the ozone water inlet; an opening at the upper end of the waste residue collector is connected with the bottom of the ozone reaction kettle, a backflow baffle is arranged inside the waste residue collector, and the backflow baffle is connected with a rotating rod capable of adjusting the self-lifting.

Description

A super nanobubble circulating ozone sewage treatment device

technical field

The utility model belongs to the technical field of sewage treatment, in particular to a super nano-bubble circulating ozone sewage treatment device.

Background technique

In the existing sewage treatment technology, the anaerobic membrane bed is an efficient sewage anaerobic treatment process. The biological aerated filter is also a high-efficiency aerobic treatment process for sewage. The biggest advantage of the biological aerated filter is that it integrates the functions of biological oxidation and interception of suspended solids, saving the secondary sedimentation tank. The disadvantage is that in the anaerobic treatment process, the reaction time of sewage treatment is long and a large area of the treatment tank is required, which leads to the problem that the system area of the sewage tank using this treatment process has a low treatment capacity; The disadvantage of the process lies in the high requirements for the concentration of suspended solids in the influent SS, the large head loss, and the need for regular backwashing. In addition, the COD level of sewage in these two processes is prone to large fluctuations, which makes the process and results of sewage treatment uncontrollable.

Throughout the various sewage treatment systems in use at this stage, most of them use anaerobic and aerobic secondary biochemical processes. Obviously, the sewage treatment system using this process has the shortcomings of both the anaerobic treatment process and the aerobic treatment process. That is, when the building covers a large area, the treatment capacity is low, and the pretreatment requirements for sewage are high, it is necessary to add various chemicals to adjust the sewage, which not only prolongs the treatment period, increases the operating cost, but also increases the sludge. production volume.

Therefore, how to overcome the shortcomings of these two processes at the same time, how to improve the treatment efficiency of the system, reduce the operating cost, save the floor space of the building, and make the sewage treatment process more stable and controllable have become a common problem in the industry. technical difficulties.

In addition, in the sewage treatment process of the prior art, there are also the use of nano-bubble and ozone water. It is well known in the industry that the bursting of nanobubbles can break the molecular chemical bonds of organic substances such as oil pollution, and achieve the effect of degradation. And the smaller the bubbles, the more significant the effect is. In addition, nanobubbles also have a significant effect on the removal of colloids in sewage. As a strong oxidizing substance, ozone can effectively degrade organic matter in sewage through advanced oxidation reaction.

However, due to technical limitations, it is difficult to generate nanobubbles with smaller diameters; ozone gas is difficult to directly use in sewage treatment, and ozone water is difficult to prepare and has a short effective time (the ozone concentration in water is 6.25*10 ^-3 mg/L, its The half-life is 5 to 30 minutes). As a result, these two methods are difficult to apply on a large scale in the field of sewage treatment.

How to better use these two technologies in sewage treatment, give full play to their characteristics and innovate existing sewage treatment processes and systems, has become the focus of general attention in the field.

Utility model content

In order to overcome the deficiencies in the prior art, the purpose of the present invention is to provide a super nano-bubble circulating ozone sewage treatment device; the device aims to efficiently degrade the sewage solution to improve the working efficiency of sewage treatment, and give full play to the super nano-bubble. The advantages of bubble technology and strong oxidizing properties of ozone.

The purpose of this utility model is achieved through the following technical solutions:

A super nano-bubble circulating ozone sewage treatment device, the device comprises an ozone reaction kettle, an ozone generating head, a super nano-bubble generator, a filter device and a waste residue collector; the super nano-bubble generator and the filter device are located at the bottom of the chamber of the ozone reaction kettle , the top of the super nano-bubble generator communicates with the bottom of the filter device, and the inside of the filter device extends the water purification outlet to the outside of the ozone reaction kettle. The purified water outlet is provided with a three-way valve, which is connected to the backwash pump of the filter device; The top of the side of the reactor is provided with a sewage inlet and an ozone water inlet, and the bottom of the side of the reactor is provided with a COD detection head and a sewage outlet. The sewage outlet flows to the ozone generating head and then enters the ozone water inlet; The bottom of the reaction kettle is connected, and the reaction waste residue in the ozone reaction kettle falls into the waste residue collector at the bottom under the action of gravity. The waste residue collector is provided with a backflow baffle, which is connected to a rotary rod that can adjust its own lift. The top of the rod extends to the outside of the top surface of the ozone reaction kettle, a waste residue sensing probe for sensing whether the waste residue is full is arranged under the return baffle, an induction valve is arranged at the bottom of the waste residue collector, and the waste residue induction probe is connected to the induction valve.

The super nano-bubble generator is connected with the air compressor arranged outside the ozone reactor by a pipeline; the number of the ozone generator head is 1-3, depending on the design processing capacity and processing requirements of the specific system, Under normal circumstances, at most 3 can basically meet the requirements; the top of the rotary rod is provided with a scale.

Preferably, the inner wall surfaces of the ozone reactor and the super nano-bubble tank are coated with anti-corrosion and anti-adhesion coatings.

The principle of the present utility model is:

(1) The utility model uses super nano bubbles and ozone water to treat sewage together, and achieves the treatment effect that is difficult to achieve by using the two alone. Super nano bubbles promote the formation of hydroxyl groups when ozone water reacts with sewage, promote the degradation of organic pollutants in sewage by ozone water, and achieve the treatment effect that is difficult to achieve by using ozone water alone; All have better processing results. The simple superposition of the two achieves the effect that cannot be achieved by the two alone (super nanobubbles are generally used in the pretreatment stage of sewage; ozone water is generally used alone in the advanced treatment of sewage. In short, under the existing technical conditions, there is no two are used at the same time).

(2) The ozone water used for treating sewage in the present invention comes from sewage and acts on sewage (ozone water is prepared from sewage, which is not available under the existing technical conditions). The existing method is to use an ozone generator to prepare ozone first, and the ozone is directly introduced into the sewage to be treated, or the ozone generator prepares ozone water from clear water and then adds the ozone water to the sewage to be treated; but the prior art is like this. The process of preparing ozone is highly dangerous, the corresponding facility costs are high, and the efficiency is very low. Compared with the existing method, the utility model is more convenient, safe and economical.

Compared with the prior art, the utility model has the following advantages and beneficial effects:

1. The technical scheme of the present utility model adopts the super nano bubble generator to generate super nano bubbles to cooperate with the ozone generating head to electrolyze the ozone water to efficiently degrade the sewage solution, so that the organic pollutants in the sewage solution are degraded into carbon dioxide (CO ₂ ) and water (H ₂ O) and waste residues that are insoluble in water, and the waste residues are collectively collected by the waste residue collector under the action of their own weight. In practical applications, the super nano-bubble circulating ozone sewage treatment device of the technical solution of the present invention can be combined as a module or used independently in the related fields of sewage treatment and environmental protection. The water is purified for sewage with different water quality. At the same time, super nano bubbles can be effectively combined with the filter device, so as to realize the use of super nano bubbles for sewage treatment, and to prevent the organic pollutants in the sewage from adhering to the surface of the filter device and affecting the filtering effect.

2. The super nano-bubble circulating ozone device of the technical solution of the present invention can be used as one of the modules of the sewage treatment system, and has the advantages of realizing unmanned management and automatic treatment of sewage with different water quality conditions.

3. The super nano-bubble circulating ozone device of the technical solution of the present invention, as a module of the sewage treatment system, effectively solves the technical problems of the prior art sewage treatment equipment such as large floor space, high operating cost, and long sewage treatment residence time.

4. The device of the present invention is provided with a backflow baffle plate in the waste slag collector. By controlling the distance between the baffle 17 and the inner wall of the waste slag collector, the waste slag is gathered and no longer recoils back to ozone with the water flow during the stirring of sewage. The disadvantages of the waste residue returning to the ozone reaction kettle are: reacting with ozone, affecting the effect of sewage treatment; impacting and colliding the precision filter membrane to destroy the filter membrane, and adhering to the filter hole, affecting its filtering effect, and the utility model The set return baffle solves these problems very well.

Compared with the prior art, the process of using the device of the utility model to carry out ultra-nano-bubble circulating ozone sewage treatment has the following advantages and beneficial effects:

1. High-concentration ozone water is used to carry out advanced chemical reaction on organic matter in sewage, which can maintain the stability of COD value on the basis of reducing COD value of sewage.

2. There is no need to add other chemicals in the whole process, which greatly reduces the amount of sludge produced. In the traditional sewage treatment process, chemical agents such as caustic soda and polyaluminum are added in the coagulation and flotation process, and these agents will eventually become and increase the output of sludge. However, this process does not require additional addition of these chemicals in the process of sewage treatment. In addition, the amount of sludge produced by this process is small, and the amount of sludge produced in the entire process is effectively controlled; The pollutants are subjected to strong oxidation treatment, and the organic pollutants are fully oxidized into carbon dioxide (CO ₂ ) and water (H ₂ O), and at the same time, some insoluble pollutants are separated out of the water body through the waste residue; thus reducing the addition of chemicals The amount of chemicals or no chemicals are added to reduce the output of sludge.

3. Compared with the traditional sewage treatment process, this process has strong sewage treatment capacity, short sewage treatment time, and can replace the time-consuming and expensive biochemical system. The main process of traditional sewage treatment process is to use anaerobic aerobic biochemical reaction to degrade organic pollutants. Because the metabolic rate of microorganisms and the metabolism of microorganisms are easily affected by the external environment, the capacity of sewage treatment is limited and the treatment speed is slow, which indirectly leads to the limited treatment capacity of the sewage treatment system and the long processing time. In this process, super nano bubbles and high-concentration ozone water are used to degrade organic matter, which not only has high degradation efficiency, but also its efficiency is not affected by water quality conditions, which ensures its superiority in processing capacity and processing time.

4. The process is highly combinable with other sewage treatment processes, and the equipment using this process and the corresponding treatment capacity have strong scalability. As a module, it is convenient to combine with various sewage treatment equipment. In addition, the process equipment is suitable for the treatment of various kinds of sewage. For sewage with different water quality conditions, the treatment effect can be achieved by increasing the number of ozone generating heads or prolonging the treatment time.

5. The system using this process is flexible in structure, adapts to various space and environmental conditions, has low design requirements for the system, and has the advantage of saving land space. It is an efficient and low-cost sewage treatment process.

6. In addition, the super nano-bubble used in this process is a conductive nano-diamond material from the surface of the bubble, and the super nano-bubble with a diameter of less than 1 μm can be prepared. In the process of separating oil stains and colloidal pollutants, the super nano-bubble produced by the bubble burst can be used. Huge destructive force, which can break the chemical bonds of molecules and then decompose them into other substances. It can efficiently remove oil, colloidal pollutants and other organic pollutants in sewage without adding other reagents. Due to the reduction in the amount of reagents used to remove oil and colloids, the amount of sludge produced in this process is greatly reduced, providing sewage with better water quality conditions for the subsequent treatment process and ensuring the treatment effect of the system.

7. It can replace the biochemical system and has the advantage of stabilizing the COD of sewage. In traditional biochemical systems, microorganisms have certain requirements for the stability of COD. In the case of unstable COD, the ecosystem is in danger of collapse. The sewage treatment effect produced by this method can reach or even exceed the use of biochemical systems. In addition, the stability of the system is improved, making it easier to maintain the continuous sewage treatment capacity of the system.

Description of drawings

1 is a schematic structural diagram of a super nano-bubble circulating ozone sewage treatment device involved in the utility model; wherein 1 is an ozone reactor, 2 is a filter device, 3 is a super nano-bubble generator, 4 is a waste slag collector, and 5 is an air Compressor, 6 is the ozone generating head, 7 is the super nano bubble, 8 is the reaction waste, 9 is the induction valve, 11 is the sewage inlet, 12 is the sewage outlet, 13 is the ozone water inlet, 14 is the purified water outlet, and 15 is the reverse The flushing pump, 16 is a three-way valve, 17 is a backflow baffle, 18 is a rotary rod, 19 is a COD detection head, and 20 is a waste residue sensing probe.

Detailed ways

The present utility model will be described in further detail below with reference to the examples, but the embodiments of the present utility model are not limited thereto.

Example 1

The super nano-bubble circulating ozone sewage treatment device involved in this embodiment is shown in FIG. 1 . The device includes an ozone reactor 1, an ozone generating head 6, a super nano-bubble generator 3, a filter device 2 and a waste residue collector 4; The bubble generator 3 and the filter device 2 are located at the bottom of the cavity of the ozone reactor 1, the top of the super nano-bubble generator 3 is communicated with the bottom of the filter device 2, and the filter device 2 extends the water purification outlet 14 to the outside of the ozone reactor 1. The water outlet 14 is provided with a three-way valve 16, and the three-way valve 16 is connected to the backwash pump 15 of the filter device 2; the top of the side of the ozone reactor 1 is provided with a sewage inlet 11 and an ozone water inlet 13, and the bottom of the side of the reactor is provided with a COD detection head 19 and the sewage outlet 12, the sewage outlet 12 flows to the ozone generating head 6 and then enters the ozone water inlet 13; the waste residue collector 4 is an inverted cone, and its upper end opening is connected with the bottom of the ozone reaction kettle 1, and the reaction waste residue 8 in the ozone reaction kettle 1 Under the action of gravity, it falls into the waste slag collector 4 at the bottom. The waste slag collector 4 is provided with a backflow baffle 17. The backflow baffle 17 is connected to a rotating rod 18 that can adjust its own lift. The top of the rotating rod 18 extends to the ozone reaction. Outside the top surface of the kettle 1, a waste residue sensing probe 20 for sensing whether the waste residue is full is provided under the backflow baffle 17, an induction valve 9 is provided at the bottom of the waste residue collector 4, and the waste residue sensing probe 20 is connected to the induction valve 9; super nano bubble generator 3 is connected with the air compressor 5 arranged outside the ozone reactor by a pipeline.

The working principle of a super nano-bubble circulating ozone sewage treatment device provided in this embodiment is:

Firstly, a certain amount of sewage solution after pretreatment and pH value adjustment in the water collecting well is passed through the sewage inlet 11 at the top of the side of the ozone reactor 1, so that the inside of the ozone reactor 1 is filled with a certain amount of sewage solution, and the ozone generating head 6. A certain amount of sewage is inhaled through the sewage outlet 12 at the bottom of the ozone reactor 1 as the raw material for generating ozone gas. The sewage water body enters the ozone generating head 6 from the sewage outlet 12 and is electrolyzed to produce ozone water, and then enters from the ozone water inlet 13. The sewage is degraded in the ozone reactor 1 .

At the same time, the air compressor 5 is turned on to provide a high-pressure gas source for the super nanobubble generator 3, and the high-pressure gas passes through the super nanobubble generator 3 to generate super nanobubbles 7 with a diameter of less than 1 μm, and the super nanobubbles 7 pass through the filter device 2 The filtration micropores on the surface of the multi-layer filter membrane in the medium enter into the sewage solution in the ozone reactor 1. At the same time, the super nano bubbles 7 are continuously ruptured during the rising process, so that the ozone water and the sewage are fully mixed and the sewage is The organic pollutants are efficiently degraded, and the degraded organic pollutants become reaction waste residues 8 and automatically settle in the waste residue collector 4 to be collected, and the return baffle 17 helps to make the waste residues gather and no longer follow the process of stirring the sewage. The water flow recoils back to the ozone reactor. When the waste residue sensing probe 20 senses that the waste residue has been piled up to the backflow baffle 17, the induction valve 9 is opened to discharge the waste residue. After the waste residue is removed, the induction valve is closed again and continues to collect waste residue (the induction valve 9 During the process of discharging the waste residue, a small amount of sewage will also be discharged together, and these sewage will be returned to the water collection well for subsequent treatment). The height of the baffle 17 is adjusted by the rotating rod 18. There is a scale for the height of the baffle 17 on the screw rod, so as to adjust the height according to the size and amount of the waste residue particles, so as to control the distance between the baffle 17 and the inner wall of the waste residue collector. For the purpose of restricting the backflow of the waste residue, the ratio between the distance between the baffle 17 and the inner wall of the waste residue collector and the cross-sectional area of the ozone reaction kettle is controlled to be 1:(1-1000).

The COD value of the sewage is detected in real time by the COD detection head 19. When the COD value of the sewage meets the treatment requirements, the ozone reactor stops producing ozone, opens the valve of the water purification outlet 14, and the degraded and filtered water flows out through the water purification outlet 14, leaving residues in the water. The waste residue and small molecular particles are adsorbed in the internal pores of the filter membrane of the filter device 2, and the water flowing out of the water purification outlet 14 enters the subsequent sedimentation tank for precipitation, pH adjustment and discharge up to the standard; until the water purification outlet 14 is no longer discharged When the water is in water, close the valve of the clean water outlet 14, open the valve of the three-way valve 16, open the flushing pump 15, and backwash the filter membrane (the backwash water can be tap water or other water, but not the original sewage ), the waste residue and small molecular particles attached to the pores of the filter membrane are washed away from the filter membrane, and automatically settle in the waste residue collector 4 under the action of gravity to be collected.

In practical applications, a super nano-bubble circulating ozone sewage treatment device provided in this embodiment can be combined as a module or used independently in the related fields of sewage treatment and environmental protection. Ozone water is used to purify sewage of different water quality. At the same time, the super nanobubble 7 can be effectively combined with the filter device 2, so as to realize the use of the super nanobubble 7 for sewage treatment, and to prevent the organic pollutants in the sewage from adhering to the surface of the filter device 2 and affecting the filtration. Effect.

In the present embodiment, the partial treatment experimental data of the sewage per unit volume (1 ton) are as follows in Table 1:

Table 1 Experimental data of sewage treatment

According to the comparison results of experimental data, it can be known that the super nano-bubble circulating ozone sewage treatment device provided by the utility model can maintain a relatively high COD removal rate in sewage treatment. On the premise of ensuring the treatment efficiency, the operation process is more economical, the whole treatment process takes less time, the COD is more stable, and at the same time, a relatively low amount of sludge is produced. Combined with numerous advantages and comparisons, the super nano-bubble circulating ozone sewage treatment device provided by the utility model is obviously more efficient and more advanced.

The above-mentioned embodiments are preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited by the above-mentioned embodiments, and any other changes, modifications, and substitutions made without departing from the spirit and principle of the present utility model , combination and simplification, all should be equivalent replacement methods, which are all included in the protection scope of the present invention.

Claims (2)

1. a super nano-bubble circulating ozone sewage treatment device is characterized in that: the device comprises an ozone reactor, an ozone generating head, a super nano-bubble generator, a filter device and a waste residue collector; the super nano-bubble generator and the filter device are located at The bottom of the chamber of the ozone reaction kettle, the top of the super nano-bubble generator communicates with the bottom of the filter device, and the inside of the filter device extends the water purification outlet to the outside of the ozone reaction kettle. Rinse pump; the top of the side of the ozone reaction kettle is provided with a sewage inlet and an ozone water inlet, and the bottom of the side of the reaction kettle is provided with a COD detection head and a sewage outlet, and the sewage outlet flows to the ozone generating head and then enters the ozone water inlet; the waste residue collector is an inverted cone , its upper opening is connected to the bottom of the ozone reaction kettle, and the reaction waste in the ozone reaction kettle falls into the waste residue collector at the bottom under the action of gravity. The waste residue collector is provided with a backflow baffle, which can be connected to adjust its own The lifting rotary rod, the top of the rotary rod extends to the outside of the top surface of the ozone reactor, a waste residue sensing probe is arranged under the return baffle to sense whether the waste residue is full, an induction valve is arranged at the bottom of the waste residue collector, and the waste residue sensing probe is connected to the induction valve. 2. The device according to claim 1, characterized in that: the super nano-bubble generator is connected with the air compressor arranged outside the ozone reactor by a pipeline; the number of the ozone generating heads is 1-3 A scale is arranged on the top of the rotating rod.