Efficient air floatation-coagulating sedimentation integrated cosmetic wastewater pretreatment device

Abstract

The utility model relates to the field of environment-friendly sewage treatment equipment, in particular to a high-efficiency air floatation-coagulating sedimentation integrated cosmetic wastewater pretreatment device. The efficient air floatation-coagulating sedimentation integrated cosmetic wastewater pretreatment device comprises a water inlet, a first reaction zone, an efficient air floatation tank, a second reaction zone, a sedimentation tank integrated cosmetic wastewater pretreatment device box body and a water outlet, a four-grid reaction tank, a high-efficiency air floatation tank, a three-grid reaction tank, a sedimentation tank and a water outlet are respectively arranged in a box body of the high-efficiency air floatation-coagulating sedimentation integrated cosmetic wastewater pretreatment device along the water flow direction in the wastewater treatment process; the device has the advantages of small occupied area, low installation and maintenance cost, simplicity and convenience in operation and the like, has a good pretreatment effect on cosmetic wastewater, provides better conditions for subsequent further sewage deep treatment, and is suitable for cosmetic type sewage treatment devices.

Description

Technical Field

[0001] The utility model relates to the field of environmental protection equipment, in particular to special equipment for wastewater treatment. Background Art

[0002] Dissolved air flotation machines mainly rely on the solubility characteristics of gases to work. During the sewage treatment process, after the high-pressure gas fully contacts the sewage, the gas dissolves in the sewage to form tiny bubbles. These tiny bubbles have a large specific surface area and can quickly adsorb suspended matter and pollutants. Dissolved air flotation machines also use the principle of flotation. During the treatment process, when the gas dissolved in the water is released, a large number of tiny bubbles will be formed instantly. As these bubbles rise in the water, they adhere to pollutants such as suspended matter, grease, and organic matter in the sewage to form air masses, which reduce the density of the pollutants and achieve a separation effect.

[0003] Dissolved air flotation process advantages: 1. Strong processing capacity, high efficiency, and small footprint; 2. Simple process and equipment structure, easy to use and maintain; 3. Can reduce or eliminate subsequent sludge swelling; 4. It has a significant effect in removing surfactants and odors in water. At the same time, aeration increases the dissolved oxygen in the water, providing favorable conditions for subsequent treatment.

[0004] Coagulation and sedimentation principle: Under the action of coagulants, colloids and fine suspended matter in wastewater are condensed into flocs, which are then separated and removed.

[0005] The basic principle of coagulation is to add coagulants into wastewater. Since coagulants are electrolytes, they form floccules in wastewater, which neutralize the colloidal substances in wastewater and form flocculent sedimentation. Coagulation sedimentation can not only remove fine suspended particles with a particle size of 10-3~10-6 mm in wastewater, but also remove chroma, oil, microorganisms, nutrients such as nitrogen and phosphorus, heavy metals and organic matter.

[0006] As described above, a highly efficient flotation-coagulation sedimentation integrated cosmetic wastewater pretreatment device is specifically for cosmetic wastewater. The efficient flotation preliminary treatment can remove pollutants such as suspended matter, surfactants, and organic matter in the wastewater. Then, through the secondary physical and chemical action of coagulation sedimentation, the suspended matter and organic pollutants are formed into large-particle alum flowers, which are more removed by settling in the sedimentation tank through gravity. The combined device achieves the advantages of high treatment efficiency, small footprint, significant economic benefits, and strong impact resistance in the pretreatment of cosmetic wastewater. Summary of the invention

[0007] The utility model aims to remedy the defects of the prior art and provides a high-efficiency flotation tank-coagulation sedimentation tank integrated cosmetic wastewater pretreatment device to solve the problems of large equipment footprint, high construction and maintenance costs, and low treatment efficiency.

[0008] Specifically, the technical solution of the utility model is:

[0009] A high-efficiency air flotation-coagulation sedimentation integrated cosmetic wastewater pretreatment device, comprising a water inlet, a first reaction zone, a high-efficiency air flotation tank, a second reaction zone, a sedimentation tank integrated cosmetic wastewater pretreatment device housing and a water outlet; characterized in that the high-efficiency air flotation-coagulation sedimentation integrated cosmetic wastewater pretreatment device housing is respectively provided with four-grid reaction tanks, a high-efficiency air flotation tank, three-grid reaction tanks, a sedimentation tank and a water outlet according to the water flow direction during the wastewater treatment process; the first reaction zone, the high-efficiency air flotation tank, the second reaction zone and the sedimentation tank are separated by a partition, and an outlet for one-way flow of wastewater is provided in the partition, and the water inlet is arranged in the high-efficiency air flotation-coagulation sedimentation integrated The top of the cosmetic wastewater pretreatment device box is provided with a basket grille for intercepting residual residues in the wastewater, and is connected to the water inlet; the first reaction zone is provided with a first PH adjustment reaction tank, and the first PH adjustment reaction tank is provided with a first dosing mixer, and the first dosing mixer is supported by a first fixed structure fixed on the top surface of the first PH adjustment reaction tank; the first reaction zone is provided with a second PH adjustment reaction tank, and the second PH adjustment reaction tank is provided with a second dosing mixer, and the second dosing mixer is supported by a second fixed structure fixed on the top surface of the second PH adjustment reaction tank; the first reaction zone is provided with a first coagulation reaction tank, and the first coagulation reaction tank has a first coagulation reaction tank. A third dosing stirrer is provided, and the third dosing stirrer is supported by a third fixed structure fixed on the top surface of the first coagulation reaction tank; the first reaction zone is provided with a first flocculation reaction tank, and a fourth dosing stirrer is provided in the first flocculation reaction tank, and the fourth dosing stirrer is supported by a fourth fixed structure fixed on the top surface of the first flocculation reaction tank; a special high-efficiency scraper is provided in the high-efficiency air flotation tank, and a fixed structure for supporting the special high-efficiency scraper is provided on both sides of the top of the high-efficiency air flotation tank; a pressure dissolved air tank is also provided in the high-efficiency air flotation tank, and the pressure dissolved air tank is equipped with a dissolved air pump for pumping the effluent of the high-efficiency air flotation tank into the dissolved air tank for airing water mixing; the second reaction zone is provided with a third PH adjustment reaction tank, the third PH adjustment reaction tank is provided with a fifth dosing stirrer, the fifth dosing stirrer is supported by a fifth fixed structure fixed on the top surface of the third PH adjustment reaction tank; the second reaction zone is provided with a second coagulation reaction tank, the second coagulation reaction tank is provided with a sixth dosing stirrer, the sixth dosing stirrer is supported by a sixth fixed structure fixed on the top surface of the second coagulation reaction tank; the second reaction zone is provided with a second flocculation reaction tank, the second flocculation reaction tank is provided with a seventh dosing stirrer, the seventh dosing stirrer is supported by a seventh fixed structure fixed on the top surface of the second flocculation reaction tank;The bottom of the sedimentation tank is provided with a sludge sedimentation area, the sludge sedimentation area is also provided with a sludge pump, the sedimentation tank is provided with a sewage inlet special guide tube and a honeycomb inclined tube filler special for sludge sedimentation; a circle of water outlet weir groove is provided at the top of the sedimentation area, and the water outlet is provided on one side of the water outlet weir groove. ;

[0010] The beneficial effects of the utility model are as follows: the utility model combines the high-efficiency air flotation process with the coagulation and sedimentation process technology, replaces the traditional oil and slag separation tank with the high-efficiency air flotation device, can better remove pollutants such as surfactants in cosmetic wastewater, and combines the coagulation and sedimentation tank to separate solids and liquids from the wastewater, effectively reducing the equipment footprint, reducing maintenance costs and facilitating installation. The high-efficiency air flotation tank and the sedimentation tank are separated by a partition, and an outlet for one-way flow of wastewater is provided in the partition. The water between the tanks does not need to be pumped to save energy consumption. The wastewater can flow directly to the next tank for treatment without installing a water pump and connecting pipes, further reducing the equipment footprint and reducing maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic structural diagram of a high-efficiency air flotation-coagulation sedimentation integrated cosmetic wastewater pretreatment device provided in the first embodiment.

[0012] In the figure: 1 the first PH adjustment reaction tank, 2 the second PH adjustment reaction tank, 3 the first coagulation reaction tank, 4 the first flocculation reaction tank, 5 the third PH adjustment reaction tank, 6 the second coagulation reaction tank, 7 the second flocculation reaction tank, 8 the sedimentation tank, 9 the water inlet, 10 the three-blade mixer, 11 the three-blade mixer, 12 the PH meter, 13 the three-blade mixer, 14 the frame mixer, 15 the scraper, 16 the three-blade mixer, 17 the PH meter, 18 the three-blade mixer, 19 the frame mixer, 20 the guide tube, 21 the outlet weir, 22 the honeycomb inclined tube filler, 23 the dissolved air releaser, 24 the high-efficiency flotation tank, 25 1# dissolved air pump, 26 2# dissolved air pump, 27 dissolved air tank, 28 1# sludge pump, 292# sludge pump, 30 the water outlet, 31 the sludge tank. DETAILED DESCRIPTION

[0013] The embodiments described below are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0014] See also Figure 1The present embodiment provides a high-efficiency air flotation-coagulation sedimentation integrated cosmetic wastewater pretreatment device, comprising a water inlet 9, a first reaction zone 1 / 2 / 3 / 4, a high-efficiency air flotation tank 24, a second reaction zone 5 / 6 / 7-sedimentation tank 8 integrated cosmetic wastewater pretreatment device housing and a water outlet 30; characterized in that the high-efficiency air flotation-coagulation sedimentation integrated cosmetic wastewater pretreatment device housing is respectively provided with a first reaction zone 1 / 2 / 3 / 4, a high-efficiency air flotation tank 24, a second reaction zone 5 / 6 / 7, and a sedimentation tank 8 according to the water flow direction during the wastewater treatment process; The reaction tank 1 / 2 / 3 / 4 / 5 / 6 / 7, the high-efficiency air flotation tank 24, and the sedimentation tank 8 are separated by a partition, and an outlet for one-way flow of wastewater is provided in the partition. The water inlet 9 is arranged on the top of the box body of the high-efficiency air flotation-coagulation sedimentation integrated cosmetic wastewater pretreatment device, and a basket grille for intercepting residual residues in the wastewater is provided inside, and is connected to the water inlet; the first reaction zone is provided with a first PH adjustment reaction tank, and the first PH adjustment reaction tank is provided with a first dosing mixer 10, and the first dosing mixer is fixed to the The first reaction zone is provided with a second PH adjusting reaction tank, and a second dosing mixer 11 is arranged in the second PH adjusting reaction tank, and the second dosing mixer is supported by a second fixed structure fixed on the top surface of the second PH adjusting reaction tank; the first reaction zone is provided with a first coagulation reaction tank, and a third dosing mixer 13 is arranged in the first coagulation reaction tank, and the third dosing mixer is supported by a third fixed structure fixed on the top surface of the first coagulation reaction tank; the first reaction zone is provided with The first flocculation reaction tank is provided with a fourth dosing stirrer 14, and the fourth dosing stirrer is supported by a fourth fixed structure fixed on the top surface of the first flocculation reaction tank; the high-efficiency air flotation tank is provided with a special high-efficiency scraper 15, and a fixed structure for supporting the special high-efficiency scraper is provided on both sides of the top of the high-efficiency air flotation tank; the high-efficiency air flotation tank is also provided with a pressure dissolved air tank 27, and the pressure dissolved air tank is equipped with a dissolved air pump 25 / 26 for pumping the effluent of the high-efficiency air flotation tank into the dissolved air tank for air-water mixing.The second reaction zone is provided with a third PH adjustment reaction tank, in which a fifth dosing stirrer 16 is arranged, and the fifth dosing stirrer is supported by a fifth fixed structure fixed on the top surface of the third PH adjustment reaction tank; the second reaction zone is provided with a second coagulation reaction tank, in which a sixth dosing stirrer 18 is arranged, and the sixth dosing stirrer is supported by a sixth fixed structure fixed on the top surface of the second coagulation reaction tank; the second reaction zone is provided with a second flocculation reaction tank, in which a seventh dosing stirrer 19 is arranged, and the seventh dosing stirrer is supported by a seventh fixed structure fixed on the top surface of the second flocculation reaction tank; a sludge sedimentation area is arranged at the bottom of the sedimentation tank 8, a sludge pump 28 / 29 is also arranged in the sludge sedimentation area, a sewage inlet guide tube and a honeycomb inclined tube filler 22 for sludge sedimentation are arranged in the sedimentation tank; a circle of water outlet weir 21 is arranged on the top of the sedimentation area, and the water outlet 30 is arranged on one side of the water outlet weir.

[0015] Through such an arrangement, this embodiment realizes the integration of high-efficiency flotation-coagulation sedimentation process, effectively reduces the equipment footprint, reduces maintenance costs and is easy to install. In addition, the high-efficiency flotation tank 24, the reaction tank 5 / 6 / 7 of the second reaction zone, and the sedimentation tank 8 are separated by a partition, and an outlet for one-way flow of wastewater is provided in the partition. The effluent between the pools does not need to be pumped, and the wastewater can flow to the next zone for treatment by itself, without the need to install a water pump and connecting pipes, further reducing the equipment footprint and reducing maintenance costs.

[0016] In this embodiment, wastewater enters the first reaction zone 1 / 2 / 3 / 4 from the water inlet 9, and the wastewater is subjected to pH adjustment, coagulation reaction, flocculation reaction, etc., respectively, and the wastewater is subjected to pre-reaction treatment for subsequent efficient flotation treatment and normal operation. In the efficient reaction zone, a large number of tiny bubbles are formed instantly after the high-pressure gas dissolved in the water is released. During the rising process of these bubbles in the water, they adhere to most of the suspended matter, surfactants and other pollutants in the sewage to form air masses, thereby reducing the density of the pollutants, thereby achieving the separation effect.

[0017] The high-efficiency flotation tank 24 is equipped with a special scraper 15. The air mass generated by flotation in the high-efficiency flotation tank forms a large sludge. When it reaches a certain level, it accumulates on the surface of the tank and is promptly scraped to the special sludge tank 31 for storage and treatment by the scraper 15. It can effectively remove most of the suspended matter, surfactants and other pollutants in the sewage and completely achieve the effect of solid-liquid separation. The bottom of the high-efficiency flotation tank 24 is equipped with a dissolved air releaser 23. The dissolved air releaser is a key device of the high-efficiency flotation tank. The pressure dissolved air water can only release a large number of fine bubbles after the pressure is reduced and the energy is dissipated by the device. The performance of the releaser is related to the fineness of the bubbles, which directly affects the effect of water purification by flotation.

[0018] After that, the wastewater enters the reaction tank 5 / 6 / 7 of the second reaction zone. The reaction tank is provided with a stirrer, which can make the reagent and the wastewater homogeneously mixed to ensure that the two react fully and quickly to achieve a good dosing effect. The reaction tank 7 is provided with a frame stirrer inside. Its structure is relatively strong and the amount of materials stirred is large. The gap between the frame stirrer and the kettle wall is small, which is conducive to the heat transfer process and is more conducive to the uniform stirring of high-viscosity flocculants. After several steps of reaction, the pollutants such as the remaining suspended matter in the wastewater can be further flocculated into agglomerates to provide better conditions for subsequent sedimentation. Further, the wastewater enters the sedimentation tank 8. The sedimentation tank is provided with a central guide tube water inlet system. The central guide tube plays the role of guiding the water flow. The central guide tube can effectively guide the sewage to different areas of the sedimentation tank, promote the sedimentation of suspended particles in the sewage, and achieve the purpose of sludge sedimentation and solid-liquid separation of wastewater. The sedimentation tank 8 is provided with a honeycomb oblique tube filler, which is made of high-quality and durable polymer material. The honeycomb oblique tube filler has the following advantages: large wet perimeter, small hydraulic radius, good laminar flow state, particle precipitation is not disturbed by flocculation water flow, wide application range, high treatment efficiency, small footprint, etc. Finally, the treated clean water leaves the high-efficiency flotation tank-coagulation sedimentation tank integrated cosmetic wastewater pretreatment device through the water outlet 30.

[0019] The utility model device has high removal efficiency for pollutants such as suspended solids and surfactants in wastewater, and has an independent sludge discharge system. It performs secondary biochemical and physical treatment on cosmetic wastewater to further improve the wastewater treatment effect, provide better conditions for subsequent treatment, and improve the biodegradability of wastewater. More preferably, the utility model occupies a small area, has low installation and maintenance costs, and has high wastewater treatment efficiency, and is particularly suitable for the pretreatment of cosmetic wastewater.

[0020] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the scope of the patent application of the present invention are still within the scope covered by the present invention.

Claims

1. A high-efficiency air flotation-coagulation sedimentation integrated cosmetic wastewater pretreatment device, comprising a water inlet, a first reaction zone, a high-efficiency air flotation tank, a second reaction zone, a sedimentation tank integrated cosmetic wastewater pretreatment device box and a water outlet; characterized in that, The housing of the high-efficiency air flotation-coagulation and sedimentation integrated cosmetic wastewater pretreatment device is provided with four reaction tanks, one high-efficiency air flotation tank, three reaction tanks, one sedimentation tank and a water outlet according to the water flow direction in the wastewater treatment process; the first reaction zone, the high-efficiency air flotation tank, the second reaction zone and the sedimentation tank are separated by a partition, and an outlet for one-way flow of wastewater is provided in the partition, and the water inlet is provided at the top of the housing of the high-efficiency air flotation-coagulation and sedimentation integrated cosmetic wastewater pretreatment device, and a basket grille for intercepting residual residues in the wastewater is provided inside, and is connected to the water inlet; the first reaction zone is provided with a first PH adjustment reaction tank, and a first dosing mixer is provided in the first PH adjustment reaction tank, and the first dosing mixer is supported by a first fixed structure fixed on the top surface of the first PH adjustment reaction tank; The first reaction zone is provided with a second pH adjustment reaction tank, and a second dosing stirrer is provided in the second pH adjustment reaction tank, and the second dosing stirrer is supported by a second fixed structure fixed on the top surface of the second pH adjustment reaction tank; the first reaction zone is provided with a first coagulation reaction tank, and a third dosing stirrer is provided in the first coagulation reaction tank, and the third dosing stirrer is supported by a third fixed structure fixed on the top surface of the first coagulation reaction tank; the first reaction zone is provided with a first flocculation reaction tank, and a fourth dosing stirrer is provided in the first flocculation reaction tank, and the fourth dosing stirrer is supported by a fourth fixed structure fixed on the top surface of the first flocculation reaction tank; a special high-efficiency scraper is provided in the high-efficiency air flotation tank, and a fixed structure for supporting the special high-efficiency scraper is provided on both sides of the top of the high-efficiency air flotation tank; a pressure dissolved air tank is also provided in the high-efficiency air flotation tank, and the pressure dissolved air tank is equipped with a dissolved air pump for pumping the effluent of the high-efficiency air flotation tank to the dissolved air tank. The gas and water are mixed inside the tank; the second reaction zone is provided with a third PH adjustment reaction tank, and the third PH adjustment reaction tank is provided with a fifth dosing stirrer, and the fifth dosing stirrer is supported by a fifth fixed structure fixed on the top surface of the third PH adjustment reaction tank; the second reaction zone is provided with a second coagulation reaction tank, and the second coagulation reaction tank is provided with a sixth dosing stirrer, and the sixth dosing stirrer is supported by a sixth fixed structure fixed on the top surface of the second coagulation reaction tank; the second reaction zone is provided with a second flocculation reaction tank, and the second flocculation reaction tank is provided with a seventh dosing stirrer, and the seventh dosing stirrer is supported by a seventh fixed structure fixed on the top surface of the second flocculation reaction tank; a sludge sedimentation area is provided at the bottom of the sedimentation tank, and a sludge pump is also provided in the sludge sedimentation area, and a sewage inlet special guide tube and a honeycomb inclined tube filler special for sludge sedimentation are provided in the sedimentation tank; a circle of water outlet weir groove is provided on the top of the sedimentation area, and the water outlet is provided on one side of the water outlet weir groove.

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