Treatment device for recycling wastewater

Abstract

The invention provides a treatment device for wastewater recovery, and is applied to the field of treatment devices for wastewater recovery. According to the technical scheme, the device is characterized by comprising a wastewater collecting tank, at least two wastewater adjusting tanks connected with the wastewater collecting tank, a plurality of dosing tanks for containing different medicaments, a mixer connected with the dosing tanks and the wastewater adjusting tanks, and a high-energy reactor connected with the mixer, the wastewater treater is connected with the high-energy reactor; the clean water tank is connected with the wastewater treater; the wastewater collecting tank is connected with the wastewater adjusting tank through a first lifting pump; the wastewater adjusting tank is connected with the mixer through a second lift pump, the plurality of dosing tanks are connected with the mixer through metering pumps, and the high-energy reactor is connected with the wastewater treater through a third lift pump; the device has the technical effects of realizing efficient and stable treatment and recycling of wastewater of various sources and different water qualities, and has the characteristics of strong adaptability, high treatment efficiency, good automation degree, excellent effluent quality and the like.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment devices, and in particular to a wastewater treatment device for recycling. Background Technology

[0002] With the global water shortage becoming increasingly severe and environmental regulations becoming increasingly stringent, the recycling and reuse of industrial and urban wastewater has become an important way to achieve sustainable development. Wastewater recycling and treatment devices can purify wastewater to a standard that can be reused for landscaping, toilet flushing, industrial cooling, floor cleaning, etc., thereby significantly reducing the consumption of fresh water resources and the total amount of sewage discharged.

[0003] Most common wastewater recycling and treatment devices on the market employ a combination of physical, chemical, and biological treatment processes. Currently, Chinese invention patent CN112661302B discloses a wastewater treatment and recycling device and method for power plants, comprising a first wastewater tank and a second wastewater tank, with a first wastewater conveying pipe installed on one side. The first and second wastewater tanks are connected to an alkaline neutralization tank via the first wastewater conveying pipe. A second wastewater conveying pipe is installed on the other side of the alkaline neutralization tank, which is connected to a sedimentation tank via the second wastewater conveying pipe. A third wastewater conveying pipe is installed on the other side of the sedimentation tank, which is connected to a flocculation tank via the third wastewater conveying pipe. A fourth wastewater conveying pipe is installed on the other side of the flocculation tank, which is connected to a clarification tank via the fourth wastewater conveying pipe. A treated water conveying pipe is installed on the other side of the clarification tank.

[0004] Existing wastewater treatment and recycling devices can only treat one type of wastewater. They cannot treat or recycle wastewater from different sources or with different water qualities, thus limiting the effectiveness of wastewater treatment and recycling. Summary of the Invention

[0005] The purpose of this invention is to provide a wastewater treatment device for recycling, which has the advantages of being able to treat wastewater from different sources and with different water qualities, and has the ability to efficiently remove pollutants from wastewater.

[0006] To achieve the above and other related objectives, the present invention provides the following technical solution:

[0007] A wastewater treatment device for recycling includes a wastewater collection tank, at least two wastewater regulating tanks connected to the wastewater collection tank, several dosing tanks containing different reagents, a mixer connected to the dosing tanks and the wastewater regulating tanks, a high-energy reactor connected to the mixer, a wastewater processor connected to the high-energy reactor, and a clear water tank connected to the wastewater processor.

[0008] The wastewater collection tank is connected to the wastewater regulating tank via a first booster pump; the wastewater regulating tank is connected to the mixer via a second booster pump; several of the dosing tanks are connected to the mixer via metering pumps; and the high-energy reactor is connected to the wastewater processor via a third booster pump.

[0009] The wastewater processor includes a tank, an inlet chamber disposed within the tank, a first mixing chamber communicating with the inlet chamber, a filter chamber communicating with the first mixing chamber, and an outlet chamber communicating with the filter chamber.

[0010] The tank body is provided with a water inlet communicating with the water inlet chamber, and a first spiral blade is fixedly provided between the water inlet chamber and the first mixing chamber; a filter is fixedly provided in the filtration chamber; and a water outlet is provided on the tank body communicating with the water outlet chamber.

[0011] In one embodiment of the present invention, a UF membrane module and / or an RO membrane module are provided between the wastewater processor and the clear water tank.

[0012] In one embodiment of the present invention, the filter includes a primary filter layer fixedly disposed in a filter chamber on one side of the first mixing chamber, a secondary electrochemical ion layer disposed in the filter chamber, and a tertiary ion layer disposed in a filter chamber near the outlet.

[0013] A second spiral blade is fixedly disposed on the primary filter layer, and a second mixing chamber is disposed between the primary filter layer and the secondary electrochemical ion layer.

[0014] In one embodiment of the present invention, a sludge pipe communicating with a first mixing chamber is provided at the bottom of the tank, and a sludge valve is provided on the sludge pipe.

[0015] In one embodiment of the present invention, the sludge pipe is connected to a sludge thickening tank, and the sludge thickening tank is connected to a filter press via a diaphragm pump.

[0016] In one embodiment of the present invention, the filter press is provided on a support frame, and the bottom of the support frame is provided with a transport device for receiving the dewatered sludge discharged from the filter press.

[0017] In one embodiment of the present invention, the wastewater collection tank, the wastewater regulating tank, and the dosing tank are all equipped with a stirring device;

[0018] The stirring device includes a stirring motor, a stirring rod fixedly connected to the output shaft of the stirring motor, and a stirring paddle fixed on the stirring rod.

[0019] In one embodiment of the present invention, the dosing tank is provided with a dosing port.

[0020] As described above, the wastewater treatment device of the present invention has the following beneficial effects:

[0021] 1. Wastewater collection tanks are used to collect industrial or domestic wastewater, while wastewater equalization tanks are used to balance the fluctuations in water volume and quality during the wastewater treatment process, ensuring the stable and efficient operation of subsequent treatment facilities. Several dosing tanks contain different reagents, which are then added to treat the wastewater according to its source or quality. Wastewater and reagents are mixed in a mixer and reacted in a high-energy reactor. The reacted particles carry positive and negative electrons, and the small molecular potential energy enters the wastewater processor. After entering the inlet chamber, the wastewater forms a vortex in the first mixing chamber through the first helical blades, increasing the collision between particles. This causes pollutants, metal ions, and salts to precipitate into tiny particles, which are then easily filtered through the primary filtration layer. Passing through the second helical blades again, the wastewater forms another vortex in the second mixing chamber, increasing the collision between particles. Emulsified oil particles and various impurities and bacteria form dense flocs, thus forming a secondary electrochemical ion layer in the tank. This layer intercepts and adsorbs particles in the coagulated water, achieving the filtration effect of a fine filtration membrane. The tertiary ion layer provides a deep filtration effect, ensuring that the treated wastewater meets the standards for discharge or recycling.

[0022] 2. By adding UF membrane modules and / or RO membrane modules to the wastewater treatment plant, higher standards for wastewater discharge or water use can be achieved;

[0023] 3. The wastewater processor is equipped with a sludge pipe. The sludge valve is opened periodically to allow the sludge from the wastewater processor to be discharged into the sludge thickening tank through the sludge pipe, and then pumped to the filter press for dewatering through a diaphragm pump. The filter press is mounted on a support frame, which facilitates the discharge of the dewatered sludge to the transportation device for transport and processing. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present invention;

[0025] Figure 2 This is a schematic diagram of the structure of the stirring device according to an embodiment of the present invention;

[0026] Figure 3 This is a schematic diagram of the structure of the dosing tank according to an embodiment of the present invention;

[0027] Figure 4 This is a schematic diagram of the wastewater processor according to an embodiment of the present invention;

[0028] Figure 5 This is a schematic diagram of the structure of the second helical blade in an embodiment of the present invention.

[0029] Reference numerals: 1. Wastewater collection tank; 2. Wastewater regulating tank; 3. Dosing tank; 4. Mixer; 5. High-energy reactor; 6. Wastewater processor; 61. Tank body; 62. Inlet chamber; 63. First mixing chamber; 64. Filtration chamber; 641. Primary filtration layer; 642. Secondary electrochemical ion layer; 643. Tertiary ion layer; 644. Second helical blade; 645. Second mixing chamber; 65. Outlet chamber; 66. Inlet; 67. First helical blade; 68. Outlet; 7. Clear water tank; 8. UF membrane module; 9. RO membrane module; 10. Sludge pipe; 11. Sludge thickening tank; 12. Filter press; 13. Support frame; 14. Agitator; 141. Agitator motor; 142. Agitator rod; 143. Agitator paddle; 15. Dosing port. Detailed Implementation

[0030] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0031] Please see Figures 1 to 5 It should be understood that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and to facilitate understanding and reading. They are not intended to limit the scope of the invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of the invention, should still fall within the scope of the technical content disclosed in this invention. Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention's implementation.

[0032] Example 1

[0033] Please see Figure 1 The present invention provides a wastewater recycling treatment device, which includes, in sequence, a wastewater collection tank 1, at least two wastewater regulating tanks 2, several dosing tanks 3, a mixer 4, a high-energy reactor 5, a wastewater processor 6, and a clear water tank 7 connected by a pipeline and pump valve system.

[0034] The inlet of wastewater collection tank 1 is connected to the wastewater source of the factory or living area through a pipeline for the initial collection of various types of wastewater; the outlet of wastewater collection tank 1 is connected to the inlet of at least two parallel wastewater regulating tanks 2 through a first booster pump and corresponding pipelines; this parallel connection allows the system to use different regulating tanks alternately or simultaneously to cope with water quality fluctuations or to perform batch processing, thereby enhancing the adaptability and continuity of the system; in this embodiment, the wastewater regulating tank 2 is preferably equipped with a level gauge for homogenizing water quality, regulating water volume, and preventing suspended solids from settling.

[0035] Please see Figure 1 , Figure 2 and Figure 3 Several dosing tanks 3 are used to hold reagents formulated for different pollutants, such as PAC (polyaluminum chloride), PAM (polyacrylamide), demulsifiers, pH adjusters, etc.; each dosing tank 3 is equipped with a dosing port 15 for easy replenishment of reagents.

[0036] In this embodiment, the wastewater collection tank 1, wastewater regulating tank 2, and dosing tank 3 are all equipped with stirring devices 14. The purpose of equipping the wastewater collection tank 1 and wastewater regulating tank 2 with stirring devices 14 is to ensure that the wastewater is fully homogeneous and to avoid the sedimentation of solids. The dosing tank 3 is equipped with stirring devices 14 to ensure the uniformity of the reagent and to prevent sedimentation. The outlet of each dosing tank 3 is connected to the reagent inlet of the mixer 4 through a metering pump, thereby realizing the accurate and quantitative dosing of the reagent. The stirring device 14 in this embodiment includes a stirring motor 141 fixed on the tank cover, a stirring rod 142 fixed to the motor output shaft and extending into the tank, and a stirring paddle 143 fixed at the lower part of the stirring rod 142.

[0037] Please see Figure 1 and Figure 4 The outlet of the wastewater regulating tank 2 is connected to the wastewater inlet of the mixer 4 via a second booster pump. In the mixer 4, the wastewater is thoroughly and rapidly mixed with the reagent from the dosing tank 3. The mixed liquid flows into the high-energy reactor 5. In this embodiment, the high-energy reactor 5 can be an electrochemical reactor, an advanced oxidation reactor, or other devices that can provide high energy input to destroy the molecular structure of pollutants. Its purpose is to charge the tiny particles in the wastewater (with positive and negative electrons) and give small molecules potential energy, creating favorable conditions for subsequent flocculation and separation.

[0038] Please see Figure 1 and Figure 4The wastewater treated by the high-energy reactor 5 is transported to the wastewater processor 6 by the third lift pump for solid-liquid separation and deep purification. The wastewater processor 6 includes a vertical or horizontal tank 61. In this embodiment, the tank 61 is preferably a vertical tank 61. The tank 61 is divided into an inlet chamber 62, a first mixing chamber 63, a second mixing chamber 645, a filter chamber 64, and an outlet chamber 65 from bottom to top. The tank 61 is provided with an inlet 66 that communicates with the inlet chamber 62. The inlet 66 is connected to the outlet of the third lift pump.

[0039] A first spiral blade 67 is fixedly installed in the channel between the inlet chamber 62 and the first mixing chamber 63. When wastewater flows from the inlet chamber 62 to the first mixing chamber 63, the first spiral blade 67 forces the water flow to generate strong rotation and eddies, which greatly increases the probability of collision between charged particles. This collision allows pollutants, metal ions and salts to precipitate out quickly and agglomerate into tiny floc particles. Above the first mixing chamber 63, at the starting end of the filter chamber 64, a primary filter layer is fixedly installed. In this embodiment, the primary filter layer can be a conventional multi-media filter material layer composed of quartz sand, anthracite, etc., used to intercept and remove larger flocs formed in the first eddy.

[0040] Please see Figure 1 , Figure 4 and Figure 5 Wastewater that has passed through the first-stage filtration layer enters the second mixing chamber 645. In the second mixing chamber 645, a second spiral blade 644 is fixedly installed. Its function is similar to that of the first spiral blade 67, which causes the water flow to form a vortex again. This vortex further promotes the collision between particles, causing the emulsified oil particles, fine impurities and bacteria in the wastewater to agglomerate into denser and more stable flocs.

[0041] Please see Figure 1 and Figure 4 Following the second mixing chamber 645, a secondary electrochemical ion layer 642 and a tertiary ion layer 643 are sequentially arranged within the filtration chamber 64. The secondary electrochemical ion layer 642 can be composed of activated carbon, ion exchange resin, or specific electrochemical active fillers. Due to the pretreatment in the preceding process, the particles in the wastewater are charged and can be efficiently intercepted and adsorbed in this layer, achieving a filtration effect comparable to a fine filtration membrane. The tertiary ion layer 643 can be composed of a higher-precision filter cartridge or special adsorption material, used for deep filtration to further remove residual trace pollutants, color, and odor, ensuring the quality of the effluent.

[0042] The purified water flows into the outlet chamber 65 and is discharged through the outlet 68 on the tank 61, entering the clear water pool 7 for storage and reuse.

[0043] Please see Figure 1To handle the sludge generated during the operation of the wastewater processor 6, a sludge pipe 10 connected to the first mixing chamber 63 is provided at the bottom of the tank 61, and a sludge valve is installed on the sludge pipe 10. The system can periodically open the sludge valve to discharge the settled sludge into the sludge thickening tank 11. The thickened sludge is transported to the filter press 12 for dewatering through a diaphragm pump. The filter press 12 is mounted on a support frame 13, and a transport device is provided below it. In this embodiment, the transport device can be a belt conveyor, a sludge hopper, or a transport vehicle, etc., to facilitate the off-site disposal of the dewatered sludge cake, thereby achieving sludge reduction and standardized management.

[0044] Example 2

[0045] Please see Figure 1 To meet higher standards for reclaimed water (e.g., as pretreatment for boiler feedwater or ultrapure water in the electronics industry), this embodiment adds a UF membrane module 8 (ultrafiltration membrane module) and an RO membrane module 9 (reverse osmosis membrane module) to the pipeline between the outlet 68 of the wastewater processor 6 and the clear water tank 7. The UF membrane module 8 can effectively remove colloids, bacteria and viruses from the water, while the RO membrane module 9 can remove most of the dissolved salts and organic pollutants. Through this combination, the final water quality can reach the standard of high-quality reclaimed water or near-pure water.

[0046] Brief description of usage:

[0047] When the system is working, the wastewater first enters the wastewater collection tank 1. After preliminary sedimentation, it is pumped by the first lift pump into the selected wastewater equalization tank 2 for water quality and quantity equalization. Subsequently, the wastewater is sent to the mixer 4 by the second lift pump. At the same time, according to the wastewater quality, specific agents are added from the corresponding dosing tank 3 through the metering pump. After the chemical-water mixture is initially mixed in the mixer 4, it enters the high-energy reactor 5, where electrochemical or advanced oxidation reactions occur in a high-energy environment, changing the physicochemical properties of the pollutants.

[0048] The treated wastewater enters wastewater processor 6 for further processing:

[0049] 1. Primary eddy mixing and primary flocculation: Eddy currents are formed by the first helical blade 67, which promotes the collision of charged particles to form primary flocs.

[0050] 2. Primary filtration: Larger flocs are removed through the primary filtration layer;

[0051] 3. Secondary vortex mixing and deep flocculation: Vortexes are formed again through the second helical blade 644, generating dense flocs;

[0052] 4. Fine filtration and adsorption: The filter passes through a secondary electrochemical ion layer 642 and a tertiary ion layer 643 in sequence to achieve efficient interception, adsorption and deep purification;

[0053] 4. Sludge discharge: Sludge is discharged regularly and dewatered.

[0054] 5. Deep desalination (optional): If a UF / RO membrane module 9 is installed, the permeate will be further purified;

[0055] 6. Finally, the qualified high-quality reclaimed water is stored in the clear water tank 7.

[0056] In summary, this invention, through the combination of a modular pre-processor unit and an innovative multi-stage eddy current-electrochemical-ion exchange composite wastewater processor 6, successfully achieves efficient and stable treatment and recycling of wastewater from various sources and with different water qualities. It features strong adaptability, high treatment efficiency, good automation, and excellent effluent quality.

[0057] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A wastewater treatment device for recycling, characterized in that: It includes a wastewater collection tank (1), at least two wastewater regulating tanks (2) connected to the wastewater collection tank (1), several dosing tanks (3) containing different reagents, a mixer (4) connected to the dosing tanks (3) and the wastewater regulating tanks (2), a high-energy reactor (5) connected to the mixer (4), a wastewater processor (6) connected to the high-energy reactor (5), and a clear water tank (7) connected to the wastewater processor (6); The wastewater collection tank (1) is connected to the wastewater regulating tank (2) via a first booster pump; the wastewater regulating tank (2) is connected to the mixer (4) via a second booster pump; several of the dosing tanks (3) are connected to the mixer (4) via metering pumps; and the high-energy reactor (5) is connected to the wastewater processor (6) via a third booster pump. The wastewater processor (6) includes a tank (61), an inlet chamber (62) disposed in the tank (61), a first mixing chamber (63) communicating with the inlet chamber (62), a filter chamber (64) communicating with the first mixing chamber (63), and an outlet chamber (65) communicating with the filter chamber (64). The tank (61) is provided with an inlet (66) communicating with the inlet chamber (62), and a first spiral blade (67) is fixedly provided between the inlet chamber (62) and the first mixing chamber (63); a filter is fixedly provided in the filter chamber (64); and an outlet (68) is provided on the tank (61) communicating with the outlet chamber (65).

2. The wastewater treatment device according to claim 1, characterized in that: A UF membrane module (8) and / or an RO membrane module (9) are installed between the wastewater processor (6) and the clear water tank (7).

3. A wastewater treatment device according to claim 1 or 2, characterized in that: The filter includes a primary filter layer (641) fixedly disposed in a filter chamber (64) on one side of the first mixing chamber (63), a secondary electrochemical ion layer (642) disposed in the filter chamber (64), and a tertiary ion layer (643) disposed in the filter chamber (64) near the outlet (68). A second spiral blade (644) is fixedly disposed on the primary filter layer, and a second mixing chamber (645) is disposed between the primary filter layer (641) and the secondary electrochemical ion layer (642).

4. The wastewater treatment device according to claim 3, characterized in that: The bottom of the tank (61) is provided with a sludge pipe (10) that communicates with the first mixing chamber (63), and a sludge valve is provided on the sludge pipe (10).

5. The wastewater treatment device according to claim 4, characterized in that: The sludge pipe (10) is connected to a sludge thickening tank (11), which is connected to a filter press (12) via a diaphragm pump.

6. The wastewater treatment device according to claim 5, characterized in that: The filter press (12) is mounted on a support frame (13), and the bottom of the support frame (13) is provided with a transport device for receiving the dewatered sludge discharged from the filter press (12).

7. A wastewater treatment device for a stirring device (14) according to claim 1, characterized in that: The wastewater collection tank (1), wastewater regulating tank (2) and dosing tank (3) are all equipped with stirring devices (14); The stirring device (14) includes a stirring motor (141), a stirring rod (142) fixedly connected to the output shaft of the stirring motor (141), and a stirring paddle (143) fixed on the stirring rod (142).

8. The wastewater treatment device according to claim 5, characterized in that: The dosing tank (3) is equipped with a dosing port (15).

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