Wastewater reduction treatment system
By combining low-temperature evaporators and ozone oxidation molecular filtration, the problems of high energy consumption and high cost in industrial wastewater treatment have been solved, achieving efficient wastewater reduction treatment and low-energy, low-cost wastewater discharge and reuse.
Patent Information
- Application Number
- CN202520348468.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-28
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2035-02-28
AI Technical Summary
Existing industrial wastewater treatment technologies suffer from high energy consumption and high costs. In particular, when treating high-concentration COD wastewater, traditional methods are difficult to meet emission standards and nanofiltration membranes are prone to clogging, resulting in extremely high treatment costs.
By employing a low-temperature evaporator combined with ozone deep oxidation and molecular filtration technology, and through a combination of oil-water pre-filtration, low-temperature evaporation, ozone oxidation and molecular filtration, wastewater volume reduction is achieved, thereby reducing energy consumption and costs.
It achieves compliant wastewater discharge and reuse with low energy consumption and low cost, with a COD removal rate of over 90% and effluent quality meeting the city's Class III pipe network discharge standards, thus reducing operating costs.
Smart Images
Figure CN223936370U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of industrial wastewater treatment technology, and in particular to a wastewater reduction treatment system. Background Technology
[0002] Industrial wastewater refers to waste liquids of various liquids. Currently, waste liquids such as metal drawing fluids, cutting fluids, and emulsions used in industrial manufacturing, paint production, and metal processing typically have high stability and are difficult to degrade, posing a potential threat to the environment.
[0003] Traditional treatment methods are mostly applicable to wastewater treatment plants, but they often have limited effectiveness in treating emulsified wastewater and are generally characterized by high energy consumption and high costs. For example, advanced oxidation and membrane treatment technologies are costly and have limited COD removal capacity; high-temperature distillation technology has high energy consumption; and biochemical treatment requires the cultivation of microbial communities, has stringent operating conditions, and is expensive, making it more commonly used in wastewater treatment plants.
[0004] The existing combination of low-temperature evaporation and nanofiltration membrane technology for wastewater reduction has been widely adopted in the market. However, it is more suitable for wastewater with COD content <10000mg / L. For high-concentration COD wastewater, the COD value after treatment can still reach more than 10000mg / L, which still cannot meet the discharge standards. At the same time, nanofiltration membranes have strict requirements on the quality of the influent water, with an oil content <20ppm and a COD content <500mg / L for nanofiltration treatment. Moreover, nanofiltration membranes are expensive and are prone to clogging, leading to frequent replacements and extremely high treatment costs.
[0005] Therefore, there is an urgent need to develop equipment suitable for on-site purification of cutting fluids and other products. The treated water can be discharged in compliance with standards or reused as industrial water for emulsions, achieving industrial water resource utilization, saving enterprises a lot of hazardous waste disposal costs, and helping enterprises achieve zero wastewater discharge.
[0006] In view of the shortcomings of the above solutions in actual production and implementation, modifications and improvements have been made. In the spirit and philosophy of seeking excellence, and with the assistance of professional knowledge and experience, and after much ingenuity and experimentation, a wastewater reduction treatment system has been specially provided to solve the problems of high energy consumption and high cost required for industrial wastewater treatment. Utility Model Content
[0007] The purpose of this invention is to provide a wastewater reduction treatment system to solve the problems of high energy consumption and high cost in industrial wastewater treatment.
[0008] The technical solution of this utility model is implemented as follows:
[0009] A wastewater reduction treatment system includes an oil separator, a low-temperature evaporator, a water tank, an ozone oxidizer, and a molecular filtration device. A diaphragm pump is installed on the oil inlet pipe of the oil separator. The oil separator and the low-temperature evaporator are connected by a pipe. The low-temperature evaporator is connected to a first pipe, a second pipe, and a third pipe. A vacuum pump is installed on the first pipe. A concentrate discharge pump is installed on the second pipe. The third pipe is connected to the water tank. The water tank and the ozone oxidizer are connected by a pipe. The ozone oxidizer and the molecular filtration device are connected by a pipe. A first discharge pump is installed on the pipe between the water tank and the ozone oxidizer. A second discharge pump is installed on the pipe between the ozone oxidizer and the molecular filtration device. The molecular filtration device is connected to an oil discharge pipe.
[0010] The bottom of the oil separator, water tank, and molecular filter is connected to a pipe, and each pipe is equipped with a control valve. A control valve is also installed on the second pipe.
[0011] This solution combines ozone deep oxidation and molecular filtration technologies with a low-temperature evaporator to treat wastewater in a coordinated manner. It can reduce the volume of wastewater to meet discharge standards or reuse it as industrial water under the premise of low energy consumption and low cost operation.
[0012] Specifically, this equipment replaces the traditional combination of low-temperature evaporation and nanofiltration. Both ozone deep oxidation and molecular filtration have no strict requirements on the quality of the influent water and produce virtually no consumables, thus reducing operating costs.
[0013] This wastewater reduction treatment system consists of several parts, including a diaphragm pump, oil separator, compressor, low-temperature evaporator, condenser, water tank, two drain pumps, ozone oxidizer, molecular filtration device, and concentrate drain pump. The low-temperature evaporator is equipped with a PLC-controlled intelligent system, a condenser, a compressor, and a vacuum pump. When the wastewater enters the low-temperature evaporator to a certain level, the vacuum pump starts to generate a vacuum, reaching a vacuum degree of 95kPa-99kPa. The compressor generates heat to heat the wastewater in the evaporator. Under vacuum, the wastewater temperature rises to about 35℃-40℃ and begins to evaporate. When the vapor rises, it liquefies upon encountering the condenser and enters the water tank.
[0014] This wastewater treatment system is an offline system. During operation, wastewater enters an oil separator via a diaphragm pump, where large particles and floating oil are pre-filtered. The pre-filtered wastewater is then introduced into a low-temperature evaporator, where it undergoes low-temperature evaporation under a vacuum of 95-99 kPa. The evaporation temperature is approximately 35-40℃, resulting in extremely low energy consumption. The evaporation and distillation yield is over 95%, and the COD removal rate is over 90%. The concentrated liquid produced during evaporation is discharged via an oil drain pump, and the distillate is stored in a water tank. Because the distillate contains small, difficult-to-degrade organic molecules, deep oxidation treatment is required. A drain pump directs water from the tank into an ozone generator, with the ozone concentration controlled at 120 mg / L. Under the synergistic effect of a catalyst and ozone, deep oxidation occurs. The oxidized wastewater is water-white, clear, and odorless, with a COD content of 1000-2000 mg / L. Finally, the water is introduced into a molecular filtration device for end-of-pipe treatment. The molecular filtration device removes dissolved organic matter, colloids and other pollutants from the water based on molecular weight to ensure that the effluent COD is less than 500 mg / L and that the ammonia nitrogen, total nitrogen and total phosphorus and other water quality indicators meet the city's third-level pipe network discharge standards. The company can also reuse the treated water according to its actual needs.
[0015] The beneficial effects of this utility model are:
[0016] This solution replaces the traditional combination of low-temperature evaporation and nanofiltration for wastewater treatment. It generates virtually no consumables, has the advantages of low energy consumption and low operating costs, and can achieve the standard treatment of wastewater. It solves the problems of high energy consumption and high cost required for industrial wastewater treatment. The treatment cost is low, the required economic investment is small, and it is more suitable for the treatment of large quantities of industrial wastewater and waste liquid. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0018] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model;
[0019] Figure 2 for Figure 1 The flow direction diagram.
[0020] In the diagram, 1-diaphragm pump; 2-oil separator; 3-compressor; 4-low temperature evaporator; 5-vacuum pump; 6-first pipeline; 7-condenser; 8-water tank; 9-ozone oxidizer; 10-second drain pump; 11-molecular filter; 12-first drain pump; 13-third pipeline; 14-second pipeline; 15-concentrate drain pump. Detailed Implementation
[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0022] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.
[0023] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features.
[0024] In the description of the embodiments, unless otherwise expressly specified and limited, the terms "set," "connect," etc., should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or a connection through an intermediate medium, or it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0025] like Figures 1-2As shown in the figure, a wastewater reduction treatment system is characterized by comprising an oil separator 2, a low-temperature evaporator 4, a water tank 8, an ozone oxidizer 9, and a molecular filter device 11. A diaphragm pump 1 is installed on the oil inlet pipe of the oil separator 2. The oil separator 2 and the low-temperature evaporator 4 are connected by a pipe. The low-temperature evaporator 4 is connected by a first pipe, a second pipe 14, and a third pipe 13. A vacuum pump 5 is installed on the first pipe. A concentrate discharge pump 15 is installed on the second pipe 14. The third pipe 13 is connected to the water tank 8. The water tank 8 is connected to the ozone oxidizer 9 by a pipe. The ozone oxidizer 9 is connected to the molecular filter device 11 by a pipe. A first discharge pump 12 is installed on the pipe between the water tank 8 and the ozone oxidizer 9. A second discharge pump 10 is installed on the pipe between the ozone oxidizer 9 and the molecular filter device 11. The molecular filter device 11 is connected to an oil discharge pipe.
[0026] The low-temperature evaporator 4 is equipped with a compressor 3 and a condenser 7, and the low-temperature evaporator 4 has a PLC-controlled intelligent system.
[0027] The bottom of the oil separator 2, water tank 8, and molecular filter device 11 are each connected to a pipe, and each pipe is equipped with a control valve. A control valve is also installed on the second pipe 14.
[0028] This wastewater reduction treatment system consists of several parts, including a diaphragm pump 1, an oil separator 2, a compressor 3, a low-temperature evaporator 4, a condenser 7, a water tank 8, two drain pumps, an ozone oxidizer 9, a molecular filtration device 11, and a concentrate drain pump 15. The low-temperature evaporator 4 has a PLC-controlled intelligent system and is equipped with a condenser 7, a compressor 3, and a vacuum pump 5. When the wastewater enters the low-temperature evaporator 4 to a certain level, the vacuum pump 5 starts to generate a vacuum, reaching a vacuum degree of 95kPa-99kPa. The compressor 3 generates heat to heat the wastewater in the evaporator. Under vacuum conditions, the wastewater temperature rises to about 35℃-40℃ and begins to evaporate. When the vapor rises and encounters the condenser 7, it liquefies and enters the water tank 8.
[0029] This wastewater treatment system is an offline system. During operation, wastewater enters the oil separator 2 via diaphragm pump 1, where large particles and floating oil are pre-filtered. The pre-filtered wastewater is then introduced into the low-temperature evaporator 4, where it undergoes low-temperature evaporation under a vacuum of 95-99 kPa. The evaporation temperature is approximately 35-40℃, resulting in extremely low energy consumption. The evaporation and distillation yield is over 95%, and the COD removal rate is over 90%. The concentrated liquid produced by the low-temperature evaporator 4 is discharged via an oil drain pump, and the distilled water is stored in the water tank 8. Because the distilled water contains small, difficult-to-degrade organic molecules, deep oxidation treatment is required. The water in the water tank 8 is introduced into the ozone generator 9 via a drain pump, with the ozone concentration controlled at 120 mg / L. Deep oxidation occurs under the synergistic effect of a catalyst and ozone. After oxidation, the wastewater is water-white, clear, and odorless, with a COD content of 1000-2000 mg / L. Finally, the water is introduced into the molecular filtration device 11 for end-of-pipe treatment. The molecular filtration device 11 removes dissolved organic matter, colloids and other pollutants from the water based on the molecular weight, so as to ensure that the effluent COD is less than 500 mg / L and that its ammonia nitrogen, total nitrogen and total phosphorus and other water quality indicators meet the city's third-level pipe network discharge standards. Enterprises can also reuse the treated water that meets the standards according to their actual needs.
[0030] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope claimed by this utility model.
Claims
1. A wastewater reduction treatment system, characterized in that, The device includes an oil separator, a low-temperature evaporator, a water tank, an ozone oxidizer, and a molecular filtration device. A diaphragm pump is installed on the oil inlet pipe of the oil separator. The oil separator and the low-temperature evaporator are connected by a pipe. The low-temperature evaporator is connected to a first pipe, a second pipe, and a third pipe. A vacuum pump is installed on the first pipe, a concentrate drain pump is installed on the second pipe, and the third pipe is connected to the water tank. The water tank and the ozone oxidizer are connected by a pipe, and the ozone oxidizer and the molecular filtration device are connected by a pipe. A first drain pump is installed on the pipe between the water tank and the ozone oxidizer, and a second drain pump is installed on the pipe between the ozone oxidizer and the molecular filtration device. The molecular filtration device is connected to an oil drain pipe.
2. The wastewater reduction treatment system according to claim 1, characterized in that, The low-temperature evaporator is equipped with a compressor and a condenser, and has a PLC-controlled intelligent system.
3. The wastewater reduction treatment system according to claim 1, characterized in that, The bottom of the oil separator, water tank, and molecular filter is connected to a pipe, and each pipe is equipped with a control valve. A control valve is also installed on the second pipe.