Soap wastewater treatment system

Abstract

The utility model provides a soap wastewater treatment system, which relates to the technical field of wastewater treatment and comprises a separation treatment system and a biochemical treatment system, the separation treatment system is used for separating soap substances in wastewater, and the biochemical treatment system is used for degrading organic matters in the wastewater; and the grease conversion system is connected with the separation treatment system and is used for converting the separated soap substances into grease substances. Soap substances and water are separated through the separation treatment system; treating the organic matters through a biochemical treatment system; and separated soap substances are converted into grease through the grease conversion system and are collected, so that resource utilization is realized, and emission of environmental pollutants is reduced. And in the wastewater treatment process, a flocculating agent is not used, so that the generation of sludge containing soap and oil is reduced, and the subsequent high treatment cost is avoided. The technical problem that a large amount of soap grease solid waste is generated in soap wastewater treatment in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of wastewater treatment, in particular to a soap wastewater treatment system. Background Art

[0002] Soap is made by saponifying natural oils, such as butter, palm oil and coconut oil, with sodium hydroxide. A large amount of wastewater is also discharged during the soap production process. This wastewater needs to be effectively treated, otherwise it will cause great pollution hazards to environmental protection.

[0003] At present, the treatment of soap wastewater in China mainly adopts chemical precipitation, filtration, adsorption and other methods. However, after the soap wastewater is treated by adsorption, filtration or dosing, a large amount of soap and grease solid waste will be generated, which needs to be treated, and the treatment cost is high.

[0004] In view of this, the present utility model is proposed. Utility Model Content

[0005] One of the purposes of the utility model is to provide a soap wastewater treatment system to solve the technical problems of soap and grease solid wastes generated in the soap wastewater treatment in the prior art and high treatment cost.

[0006] In order to achieve the above-mentioned purpose of the utility model, the following technical solutions are adopted:

[0007] A soap wastewater treatment system comprises a separation treatment system and a biochemical treatment system, wherein the separation treatment system is used to separate soap substances in the wastewater, and the biochemical treatment system is used to degrade organic matter in the wastewater;

[0008] It also includes a grease conversion system connected to the separation processing system, which is used to convert the separated soap substances into grease substances.

[0009] Further, the separation processing system includes a heating device and a separation device;

[0010] The separation device comprises a separation pool and a gas dissolving device, wherein the output end of the gas dissolving device is connected to the separation pool and is used for inputting microbubbles into the separation pool.

[0011] Furthermore, the separation tank comprises a separation zone and a clean water zone, the separation zone is connected to the output end of the gas dissolving device, and the clean water zone is connected to the input end of the gas dissolving device.

[0012] Furthermore, a dissolved gas releaser is provided at the output end of the dissolved gas device, and the dissolved gas releaser is arranged at the bottom of the separation zone.

[0013] Furthermore, the input end of the gas dissolving device includes a gas phase input end and a liquid phase input end, and the liquid phase input end is connected to the clean water area;

[0014] An air dissolving pump is arranged between the liquid phase input end and the separation tank.

[0015] Furthermore, a soap substance outlet and a water outlet are provided on the clean water area, the soap substance outlet is located above the water outlet, the soap substance outlet is connected to the oil conversion system, and the water outlet is connected to the biochemical treatment system.

[0016] Furthermore, the oil conversion system comprises a collection device, a reaction tank and an oil collection device which are arranged in sequence, and an acid addition system is arranged in the reaction tank.

[0017] Furthermore, the acid adding system includes an acid adding device, a pH detection device and a stirring device;

[0018] A collection tank water pump is provided between the collection device and the reaction tank.

[0019] Furthermore, the biochemical treatment system includes a hydrolysis acidification device and an aeration oxidation tank, wherein the aeration oxidation tank is provided with an aeration device, and the hydrolysis acidification device is connected to the separation treatment system;

[0020] A separation device water pump is provided between the hydrolysis acidification device and the separation treatment system.

[0021] Furthermore, a collecting tank is provided in the soap substance outlet;

[0022] A scraper is provided on the separation tank.

[0023] The utility model provides a soap wastewater system, which separates soap substances and water under high temperature through a separation treatment system; treats organic matter in wastewater through a biochemical treatment system to complete soap wastewater treatment; and converts the separated soap substances into grease and collects them through a grease conversion system to achieve resource utilization and reduce the discharge of environmental pollutants. In the wastewater treatment process, no flocculant is used, which reduces the generation of soap- and oil-containing sludge and avoids subsequent high treatment costs. The technical problem of a large amount of soap and grease solid waste generated in the prior art during soap wastewater treatment is solved, and the problem of high cost of soap and grease solid waste treatment is fundamentally solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 The soap wastewater treatment process flow chart provided by the utility model;

[0026] Figure 2 This is a schematic diagram of the overall structure of the soap wastewater treatment system provided in Example 1 of the utility model.

[0027] Icons: 1-separation tank; 11-separation area; 12-clean water area; 13-collection tank; 14-scraper;

[0028] 2-dissolving gas device; 21-dissolving gas releaser; 22-dissolving gas pump;

[0029] 3-Hydrolysis acidification device; 31-Separation device water pump;

[0030] 4- aeration oxidation pond; 41- aeration device;

[0031] 5-collecting device; 51-collecting pool water pump;

[0032] 6-reaction tank; 61-acid adding device; 62-PH detection device; 63-stirring device;

[0033] 7-Oil recovery device;

[0034] 8- heating device, 81- temperature detection device. DETAILED DESCRIPTION

[0035] Unless otherwise defined herein, scientific and technical terms used in conjunction with the present invention shall have the meanings commonly understood by those of ordinary skill in the art. The meaning and scope of the terms should be clear, however, in the case of any potential ambiguity, the definitions provided herein take precedence over any dictionary or external definitions. In this application, unless otherwise stated, the use of "or" means "and / or". In addition, the use of the term "including" and other forms is non-limiting.

[0036] The technical solution of the utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the 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.

[0037] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0039] In the description of the present utility model, it should be noted that the terms "proximal end", "distal end", "front end", "rear end", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the utility model product is usually placed when in use, which are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0040] The terms "horizontal", "vertical" and the like do not mean that the components must be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0041] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be a communication between the two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] The utility model provides a soap wastewater treatment system, comprising a separation treatment system and a biochemical treatment system, wherein the separation treatment system is used to separate soap substances in the wastewater, and the biochemical treatment system is used to degrade organic matter in the wastewater;

[0043] It also includes a grease conversion system connected to the separation processing system, which is used to convert the separated soap substances into grease substances.

[0044] The soap wastewater is separated from soap substances and water by a separation treatment system under high temperature; the organic matter in the wastewater is treated by a biochemical treatment system to complete the soap wastewater treatment; the separated soap substances are converted into grease and collected by a grease conversion system to achieve resource utilization and reduce the emission of environmental pollutants. In the wastewater treatment process, no flocculant is used to reduce the generation of soap and oil sludge, avoiding subsequent high treatment costs. The technical problem of a large amount of soap and grease solid waste generated in wastewater treatment is solved, and the problem of high cost of soap and grease solid waste treatment is fundamentally solved.

[0045] In some specific embodiments, the separation processing system includes a heating device 8 and a separation device;

[0046] The separation device comprises a separation pool 1 and a gas dissolving device 2 , wherein the output end of the gas dissolving device 2 is connected to the separation pool 1 for inputting microbubbles into the separation pool 1 .

[0047] The soap waste water is heated to 80-90°C by the heating device 8, and the temperature can be detected by the temperature detection device 81. Under the action of high temperature, the binding viscosity between the soap substances in the soap waste water and water is weakened; at the same time, the air dissolving device 2 releases a large number of microbubbles. Under the action of interfacial tension, bubble buoyancy, etc., the viscous soap substances separated from the water will be attached to the microbubbles and float to the water surface, thereby completing the separation of the soap substances in the soap waste water.

[0048] After the soap substances are separated, the structure of the separation tank is improved in order to enable the separated soap substances and water to be output stably.

[0049] In some specific embodiments, the separation tank 1 includes a separation zone 11 and a clean water zone 12 , the separation zone 11 is connected to the output end of the gas dissolving device 2 , and the clean water zone 12 is connected to the input end of the gas dissolving device 2 .

[0050] The separation process of soap substances is completed through the separation zone 11. The separated soap substances overflow with the water flow into the clean water zone 12, forming a soap substance layer and a wastewater layer in the clean water zone, and are output through the clean water zone. By setting the separation zone 11 and the clean water zone 12, soap substances are completely separated from wastewater.

[0051] In some specific embodiments, a dissolved gas releaser 21 is provided at the output end of the dissolved gas device 2 , and the dissolved gas releaser 21 is arranged at the bottom of the separation zone 11 .

[0052] A large amount of microbubbles can be released through the dissolved air release device 21 to achieve the effect of adhering soap substances.

[0053] In some specific embodiments, the input end of the gas dissolving device 2 includes a gas phase input end and a liquid phase input end, and the liquid phase input end is connected to the clean water area 12;

[0054] Preferably, an air dissolving pump 22 is provided between the liquid phase input end and the separation tank 1 .

[0055] The compressed air input through the gas phase input end and the water input through the liquid phase input end enter the dissolved air device 2 for mixing and compression, so that the microbubbles released by the dissolved air releaser 21 are mixed bubbles of water and gas, which can be attached to soap substances.

[0056] In some specific embodiments, the clean water area 12 is provided with a soap outlet and a water outlet, the soap outlet is located above the water outlet, the soap outlet is connected to the oil conversion system, and the water outlet is connected to the biochemical treatment system.

[0057] The separated soap substances are output to the oil conversion system through the soap substance outlet to convert the soap substances into oil substances; the waste water is output to the biochemical treatment system through the water outlet to remove organic matter in the waste water.

[0058] In some specific embodiments, the oil conversion system comprises a collection device 5, a reaction tank 6 and an oil collection device 7 which are arranged in sequence;

[0059] The reaction tank 6 is provided with an acid adding system.

[0060] The soap material outputted through the soap material outlet is collected by the collecting device 5 and transported to the reaction tank 6. Acid is added to the soap material through the acid adding system to cause the soap material to undergo the following chemical reaction:

[0061] RO-Na+H + →RO-H+Na + ;

[0062] The soap substances react with the acid to be converted back into grease substances in the reaction tank 6. The converted grease substances enter the oil collecting device, and the collected grease substances can be recycled.

[0063] In order to completely convert soap substances into oil substances.

[0064] In some specific embodiments, the acid adding system includes an acid adding device 61, a pH detection device 62 and a stirring device 63;

[0065] Acid is added through the acid adding device 61, and the pH of the soap substance is detected through the pH detection device 62. When the pH is lower than the set value of 3, the acid adding device 61 is closed; when the pH is higher than 4, the acid adding device 61 is opened, and the acid and the soap substance are mixed evenly through the stirring device 63, so that the soap substance is completely converted into a fat substance. Among them, the acid adding device 61 can be provided with an electric acid inlet valve, which is electrically connected to the pH detection device to realize the control of opening or closing the acid adding device 61.

[0066] Preferably, a collection tank water pump 51 is provided between the collection device 5 and the reaction tank 6 .

[0067] The collected soap substances can be better transported to the reaction tank 6 through the collection tank water pump 51 .

[0068] In some specific embodiments, the biochemical treatment system includes a hydrolysis acidification device 3 and an aeration oxidation pond 4, wherein an aeration device 41 is provided in the aeration oxidation pond 4, and the hydrolysis acidification device 3 is connected to a separation treatment system;

[0069] Preferably, a separation device water pump 31 is provided between the hydrolysis acidification device 3 and the separation treatment system.

[0070] The hydrolysis and acidification device is used to perform hydrolysis and acidification treatment to improve the biodegradability of the wastewater; the aeration device 41 is used to perform aeration in the aeration oxidation pond 4 to cooperate with the fillers in the aeration oxidation pond to increase the specific surface area of ​​the activated sludge, enhance the treatment capacity of the aeration oxidation pond, and achieve deep degradation of organic matter.

[0071] Specifically, the aeration device 41 may be an aeration fan.

[0072] In some specific embodiments, a scraper 14 is provided on the separation tank 1;

[0073] The soap substances separated in the separation tank 1 can be pushed to the soap substance outlet by the scraper 14 .

[0074] Preferably, a collecting tank 13 is provided in the soap substance outlet.

[0075] The collecting groove 13 can prevent the soap material from being dispersed with the water flow and guide the soap material into the soap material outlet for smooth output.

[0076] By adding high-temperature steam at the heating device 8, the Brownian and molecular motions in the soapy water are intensified, and the adhesion and connectivity between the substances in the wastewater are weakened. The heated soapy water enters the separation device, and the soap substances float to the surface through the adhesion of a large number of microbubbles. No flocculant needs to be added during the separation process.

[0077] The soap substances are pushed to the soap substance outlet by the scraper 14 to separate the soap substances from the waste water. The separated waste water is hydrolyzed and acidified to improve the biodegradability and the degradation efficiency of the pollutants in the waste water.

[0078] By adding acid to convert soap substances into oily substances and collecting them, the generation of sludge containing soap substances is reduced, which fundamentally solves the problem of generating a large amount of soap substances in the treatment of soap wastewater and the high treatment cost.

[0079] The technical solution of the utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the 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.

[0080] Example 1

[0081] Combination Figure 1-2 A soap wastewater treatment system is described, comprising a separation treatment system and a biochemical treatment system, wherein the separation treatment system is used to separate soap substances in the wastewater, and the biochemical treatment system is used to degrade organic matter in the wastewater;

[0082] It also includes a grease conversion system connected to the separation processing system, which is used to convert the separated soap substances into grease substances.

[0083] The separation processing system comprises a heating device 8 and a separation device.

[0084] The separation device comprises a separation tank 1 and a gas dissolving device 2.

[0085] The separation tank 1 includes a separation zone 11 and a clean water zone 12. The separation zone 11 is connected to the dissolved gas releaser 21 at the output end of the dissolved gas device 2, and the clean water zone 12 is connected to the liquid phase input end of the dissolved gas device 2 through the dissolved gas pump 22. The soap substance outlet on the clean water zone 12 is connected to the collection device 5, and the water outlet is connected to the hydrolysis acidification device 3 through the separation device water pump 31.

[0086] A scraper 14 is provided on the separation tank 1, and a collecting tank 13 is provided in the soap substance outlet.

[0087] The oil conversion system comprises a collecting device 5, a reaction tank 6 and an oil collecting device 7 which are arranged in sequence.

[0088] The reaction tank 6 is provided with an acid adding device 61 , a pH detection device 62 and a stirring device 63 ; the collecting device 5 is connected to the reaction tank 6 via a collecting tank water pump 51 .

[0089] The biochemical treatment system includes a hydrolysis acidification device 3 and an aeration oxidation pond 4.

[0090] An aeration device 41 is provided in the aeration oxidation pond 4. In this embodiment, the aeration device 41 is an aeration fan.

[0091] Working principle:

[0092] When in use, the soapy waste water passes through the heating device 8, and high-temperature steam is input to raise the temperature of the soapy waste water to 80-90°C.

[0093] The dissolved air device 2 is turned on, and the heated wastewater enters the separation tank 1. Under the action of a large number of microbubbles output by the dissolved air releaser 21, the soap substances float to the surface of the wastewater and flow to the clean water area 12 with the water.

[0094] The scraper 14 is started to push the soap substance to the soap substance outlet, transported to the collecting device 5, and enters the reaction tank 6 through the collecting tank water pump 51, and the acid adding device 61, the pH detection device 62 and the stirring device 63 are started to convert the soap substance into a grease substance, and the grease substance is collected in the oil collecting device.

[0095] Start the separation device water pump 31, so that the separated wastewater enters the hydrolysis acidification device 3 from the water outlet through the separation device water pump 31, enters the aeration oxidation tank 4 after hydrolysis acidification treatment, and starts the aeration device 41. The aeration device 41 is used to aerate the aeration oxidation tank 4, and the filler in the aeration oxidation tank is coordinated with the aeration oxidation tank to increase the specific surface area of ​​the activated sludge, enhance the treatment capacity of the aeration oxidation tank, and realize the deep degradation of organic matter. The treatment of soap wastewater is completed, and the treated wastewater is discharged.

[0096] Under the high temperature of 80-90°C, the binding force between soap substances and water is weakened in soap wastewater. At the same time, since the air dissolving device 2 releases a large number of microbubbles, the viscous soap substances separated from the water will be attached to the microbubbles, float to the surface of the wastewater under the action of buoyancy, and are pushed into the collection tank 13 under the action of the scraper 14, and enter the collection device 5. Acid is added to cause a chemical reaction in which soap substances are converted into grease substances, thereby solving the problem of generating a large amount of soap substances in the treatment of soap wastewater in the prior art, and no flocculant is added in the whole process.

[0097] The soap-like substances are converted into oil-like substances, and a large amount of soap-like substances are not produced, and no treatment is required, thus solving the problem of high treatment costs.

[0098] At the same time, oily substances can be reused, realizing resource utilization.

[0099] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A soap wastewater treatment system, characterized in that: It includes a separation treatment system and a biochemical treatment system, wherein the separation treatment system is used to separate soap substances in wastewater, and the biochemical treatment system is used to degrade organic matter in wastewater; It also includes a grease conversion system connected to the separation processing system, which is used to convert the separated soap substances into grease substances.

2. The soap wastewater treatment system according to claim 1, characterized in that: The separation processing system comprises a heating device (8) and a separation device; The separation device comprises a separation pool (1) and a gas dissolving device (2), wherein the output end of the gas dissolving device (2) is connected to the separation pool (1) and is used to input microbubbles into the separation pool (1).

3. The soap wastewater treatment system according to claim 2, characterized in that: The separation tank (1) comprises a separation zone (11) and a clean water zone (12); the separation zone (11) is connected to the output end of the gas dissolving device (2); and the clean water zone (12) is connected to the input end of the gas dissolving device (2).

4. The soap wastewater treatment system according to claim 3, characterized in that: The output end of the dissolved gas device (2) is provided with a dissolved gas releaser (21), and the dissolved gas releaser (21) is arranged at the bottom of the separation zone (11).

5. The soap wastewater treatment system according to claim 3, characterized in that: The input end of the gas dissolving device (2) comprises a gas phase input end and a liquid phase input end, and the liquid phase input end is connected to the clean water area (12); An air dissolving pump (22) is provided between the liquid phase input end and the separation tank (1).

6. The soap wastewater treatment system according to claim 3, characterized in that: The clean water area (12) is provided with a soap substance outlet and a water outlet, wherein the soap substance outlet is located above the water outlet, the soap substance outlet is connected to a grease conversion system, and the water outlet is connected to a biochemical treatment system.

7. The soap wastewater treatment system according to claim 6, characterized in that: The oil conversion system comprises a collecting device (5), a reaction tank (6) and an oil collecting device (7) which are arranged in sequence, and an acid adding system is arranged in the reaction tank (6).

8. The soap wastewater treatment system according to claim 7, characterized in that: The acid adding system comprises an acid adding device (61), a pH detection device (62) and a stirring device (63); A collection tank water pump (51) is provided between the collection device (5) and the reaction tank (6).

9. The soap wastewater treatment system according to claim 6, characterized in that: The biochemical treatment system comprises a hydrolysis and acidification device (3) and an aeration and oxidation pond (4), wherein an aeration device (41) is provided in the aeration and oxidation pond (4), and the hydrolysis and acidification device (3) is connected to a separation and treatment system; A separation device water pump (31) is provided between the hydrolysis and acidification device (3) and the separation treatment system.

10. The soap wastewater treatment system according to claim 6, characterized in that: A collecting tank (13) is provided in the soap substance outlet; The separation tank (1) is provided with a scraper (14).

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