A modular high-efficiency nmp wastewater treatment system

Abstract

The utility model discloses a modularization high -efficient NMP wastewater treatment system, including the adjusting pool for homogenization and even quantity wastewater, adopt flocculation body to handle the coagulation sedimentation tank of wastewater, utilize hydrolytic bacteria, acidification bacteria and make insoluble organic matter in wastewater hydrolysis into solubility organic matter, and the hydrolysis acidification pool of difficult biodegradable macromolecular substance is converted into easy biodegradable small molecule material, be used for removing organic matter in wastewater primary A / O pool and secondary A / O pool, be used for separating bacteria, virus in wastewater, and the A / MBR pool of retaining microorganism in wastewater, be used for the water production pool of the storage of wastewater after treatment, be used for sludge concentration sludge pool, be used for the sludge filter pressing treatment of supercoil machine, the wastewater treatment system of the utility model can complete the uninterrupted processing of large quantities of wastewater, can complete NMP in wastewater, high chemical oxygen demand, high ammonia nitrogen content, poor biological treatability and toxicity and so on processing, make wastewater discharge up to standard, wastewater treatment cost is low, and the whole system construction is convenient.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment, specifically to a modular and efficient NMP wastewater treatment system. Background Technology

[0002] NMP wastewater is a common high-concentration organic wastewater in chemical production, mainly originating from the use of N-methylpyrrolidone (NMP) as a solvent. It contains high chemical oxygen demand (COD), high ammonia nitrogen content, poor biological treatability, and toxicity. Wastewater containing these substances cannot be directly discharged and requires further treatment. However, existing treatment devices or systems are difficult to handle on a large scale and in large quantities, and their treatment costs are very high relative to the treatment effect, making them unsuitable for the needs of current enterprises. Therefore, it is necessary to develop a modular and efficient NMP wastewater treatment system. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a modular and efficient NMP wastewater treatment system that can solve the problems of high chemical oxygen demand (COD), high ammonia nitrogen content, poor biological treatability and toxicity in wastewater, so that the wastewater can meet the discharge standards. It has practicality and wide applicability.

[0004] To solve the above problems, the present invention adopts the following technical solution: A modular and efficient NMP wastewater treatment system, including Equalization tanks used for homogenizing and equalizing wastewater; Coagulation sedimentation tanks that use flocculants to treat wastewater; Hydrolysis and acidifying bacteria are used to hydrolyze insoluble organic matter in wastewater into soluble organic matter, and to transform large molecules that are difficult to biodegrade into small molecules that are easy to biodegrade in a hydrolysis and acidification tank. Primary and secondary A / O tanks are used to remove ammonia nitrogen from organic matter in wastewater. A / MBR tank used to separate bacteria and viruses from wastewater and retain microorganisms in wastewater; A water production tank used for storing treated wastewater; Sludge tanks used for sludge thickening; Screw press for sludge defiltration; The equalization tank, coagulation sedimentation tank, hydrolysis acidification tank, primary A / O tank, secondary A / O tank, A / MBR tank, and product water tank are connected in sequence. The equalization tank, coagulation sedimentation tank, sludge tank, and screw press are connected in sequence.

[0005] Preferably, the primary A / O tank, secondary A / O tank, and A / MBR tank are connected to the sludge tank.

[0006] Preferably, the screw press is connected to the equalization tank.

[0007] Preferably, the regulating tank includes a tank body, a basket grid, a lift pump, an electromagnetic flow meter, a level gauge, a heating device, a perforated aeration assembly, and pipelines.

[0008] Preferably, the coagulation sedimentation tank includes a tank body, a reaction mixer, a pH meter, a central guide tube, a sludge pump, a compound agent dosing device, an acid-base dosing device, a PAM dosing device, and pipelines.

[0009] Preferably, the hydrolysis acidification tank includes a tank body, a submersible mixer, a perforated aeration assembly, and pipelines.

[0010] Preferably, both the primary A / O tank and the secondary A / O tank include a tank body, a submersible mixer, a microporous aerator, a mixed liquor return pump, a perforated aeration assembly, and pipelines.

[0011] Preferably, the A / MBR tank includes a tank body, a hyperboloid mixer, a perforated aeration assembly, an MBR assembly, a dosing assembly, an electromagnetic flow meter, a sludge return pump, a level gauge, and pipelines.

[0012] Preferably, the water production tank includes a tank body, a water production pump, a tubular sterilizer, and pipelines.

[0013] Preferably, the sludge tank includes a tank body, a frame mixer, a backwash pump, and pipelines.

[0014] Preferably, the hydrolysis acidification tank is equipped with high-efficiency packing material.

[0015] Preferably, the wastewater treatment system also includes an electrical control unit, which is integrated with the compound agent dosing device, the alkali-acid dosing device, the PAM dosing device, etc., in the housing.

[0016] The beneficial effects of this utility model are: 1. Taking into full account the characteristics of NMP wastewater, such as poor biodegradability and high COD and total nitrogen concentrations, a coagulation sedimentation + hydrolysis + secondary A / OA / MBR is adopted to simultaneously remove COD, total ammonia nitrogen and biological disinfection, preventing high concentrations of toxic substances from directly entering the biochemical treatment system.

[0017] 2. Pretreatment employs coagulation sedimentation to improve the biodegradability of B / C and remove COD, creating favorable conditions for subsequent biological treatment. Simultaneously, the addition of chemicals (commonly known as coagulant PAC and flocculant aid PAM) causes difficult-to-settle particles in the water to aggregate and form colloids, which then combine with impurities in the water to form larger flocs. These flocs have strong adsorption capacity, adsorbing not only suspended solids but also some bacteria and dissolved substances.

[0018] 3. The hydrolysis acidification tank is equipped with high-efficiency packing material, which greatly increases the biological phase and microbial community. The process of using hydrolytic bacteria and acidifying bacteria to hydrolyze insoluble organic matter in water into soluble organic matter and transforming large molecules that are difficult to biodegrade into small molecules that are easy to biodegrade improves the efficiency and effect of hydrolysis acidification.

[0019] 4. The two-stage A / O biological denitrification operation is beneficial for removing total nitrogen and ammonia nitrogen; it also has strong resistance to load shocks. Even when the influent water quality fluctuates significantly or the pollutant concentration is high, the system can maintain normal operation, making operation and management very simple. Furthermore, by utilizing the organic matter in the wastewater as a carbon source for denitrification, there is no need to add expensive carbon sources such as methanol. The alkalinity generated during denitrification correspondingly reduces the alkali consumption required for nitrification, saving operating costs.

[0020] 5. Finally, the biological treatment adopts an MBR membrane bioreactor, which can significantly increase the MLVSS concentration and biophase enrichment in the biological treatment tank. At the same time, the high efficiency of the membrane separation effect is far better than that of traditional sedimentation tanks. The treated water is extremely clear, with suspended solids and turbidity close to zero. Bacteria and viruses are greatly removed, and the water quality is better than the water quality standard for domestic miscellaneous water.

[0021] 6. The electrical control system, compound agent dosing device, alkali-acid dosing device, and PAM dosing device are integrated into one box, realizing the modular operation of the wastewater treatment device. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below, but this is not a limitation on the protection scope of this utility model.

[0023] Figure 1 This is a schematic diagram of the system composition of this utility model.

[0024] The components include: 1. equalization tank, 2. coagulation sedimentation tank, 3. hydrolysis acidification tank, 4. primary A / O tank, 5. secondary A / O tank, 6. A / MBR tank, 7. permeate tank, 8. sludge tank, and 9. screw press. Detailed Implementation

[0025] See Figure 1 The modular and efficient NMP wastewater treatment system shown includes an equalization tank 1 for homogenizing and equalizing wastewater. 2. Coagulation sedimentation tank for treating wastewater using flocculants; Hydrolysis and acidifying bacteria are used to hydrolyze insoluble organic matter in wastewater into soluble organic matter, and to convert large molecules that are difficult to biodegrade into small molecules that are easy to biodegrade into hydrolysis and acidification tank 3. Primary A / O tank 4 and secondary A / O tank 5 are used to remove organic ammonia nitrogen from wastewater; A / MBR tank 6 is used to separate bacteria and viruses from wastewater and to retain microorganisms in wastewater; 7 is a water production tank used for storing treated wastewater. 8. Sludge tank for sludge thickening; 9. Screw press for sludge defiltration treatment; The equalization tank, coagulation sedimentation tank, hydrolysis acidification tank, primary A / O tank, secondary A / O tank, A / MBR tank, and product water tank are connected in sequence. The equalization tank, coagulation sedimentation tank, sludge tank, and screw press are connected in sequence.

[0026] Furthermore, the primary A / O tank, secondary A / O tank, A / MBR tank, and sludge tank are connected to the sludge tank.

[0027] Furthermore, the screw press is connected to the equalization tank.

[0028] Furthermore, the regulating tank includes a tank body, a basket grid, a lift pump, an electromagnetic flow meter, a level gauge, a heating device, a perforated aeration assembly, and pipelines.

[0029] Furthermore, the coagulation sedimentation tank includes a tank body, a reaction mixer, a pH meter, a central guide tube, a sludge pump, a compound agent dosing device, an alkali-acid dosing device, a PAM dosing device, and pipelines.

[0030] Furthermore, the hydrolysis acidification tank includes a tank body, a submersible mixer, a perforated aeration assembly, and pipelines.

[0031] Furthermore, both the primary A / O tank and the secondary A / O tank include a tank body, a submersible mixer, a microporous aerator, a mixed liquor return pump, a perforated aeration assembly, and pipelines.

[0032] Furthermore, the A / MBR tank includes a tank body, a hyperboloid mixer, a perforated aeration assembly, an MBR assembly, a dosing assembly, an electromagnetic flow meter, a sludge return pump, a level gauge, and pipelines.

[0033] Furthermore, the water production tank includes a tank body, a water production pump, a tubular sterilizer, and pipelines.

[0034] Furthermore, the sludge tank includes a tank body, a backwash pump, a frame mixer, and pipelines.

[0035] Furthermore, the functional principles of each component of this utility model are as follows: Wastewater equalization tank: The function of the equalization tank is to homogenize and equalize the flow rate. It can also be considered for functions such as sedimentation, mixing, chemical dosing, neutralization, and pre-acidification. Therefore, for wastewater with significant fluctuations in flow rate in this scheme, it is necessary to introduce the wastewater into the equalization tank for homogenization and equalization treatment before it enters the main treatment system. This ensures that the flow rate and quality of the wastewater are relatively stable, providing stable and optimized operating conditions for the subsequent water treatment system. Its main functions are as follows: 1. Improve the buffering capacity against organic loads, preventing drastic changes in the treatment system load; 2. Reduce fluctuations in the flow rate of wastewater entering the treatment system, stabilizing the dosing rate of chemicals used in wastewater treatment and adapting it to the capacity of the dosing equipment; 3. In controlling the pH value and stabilizing water quality, the neutralization capacity of different wastewater types can be utilized to reduce the consumption of chemicals during neutralization; 4. Prevent high concentrations of toxic substances from directly entering the biochemical treatment system; 5. Allow wastewater to continue to be supplied to the treatment system even when the factory or other systems temporarily stop discharging wastewater, ensuring the normal operation of the system.

[0036] Coagulation sedimentation tank: Coagulation sedimentation tank is a type of sedimentation tank in wastewater treatment and is an extremely important treatment process. By adding some agents (usually called coagulant PAC and coagulant aid PAM) to the water, the particles in the water that are difficult to settle can aggregate to form colloids. Then, they combine with impurities in the water to form larger flocs. The flocs have strong adsorption capacity and can not only adsorb suspended solids, but also some bacteria and dissolved substances. Through adsorption, the flocs increase in volume and settle.

[0037] Hydrolysis and acidification tank: The hydrolysis (acidification) treatment method is the preliminary stage of anaerobic treatment. Based on the different growth conditions of methanogens and hydrolytic acid-producing bacteria, the anaerobic treatment is controlled under conditions containing a large number of hydrolytic and acidifying bacteria. The hydrolytic and acidifying bacteria are used to hydrolyze insoluble organic matter in the water into soluble organic matter, and to transform large molecules that are difficult to biodegrade into small molecules that are easy to biodegrade, thereby improving the biodegradability of wastewater and providing a good water quality environment for subsequent biological treatment.

[0038] Hydrolysis refers to the biochemical reaction that occurs extracellularly before organic matter enters microbial cells. Microorganisms complete this biocatalytic reaction by releasing extracellular free enzymes or immobilized enzymes attached to the cell wall. Acidification is a typical fermentation process, with microbial metabolites mainly consisting of various organic acids. Mechanistically, hydrolysis and acidification are two stages of anaerobic nitrification, but different systems have different treatment objectives for hydrolysis and acidification. In hydrolysis-acidification-aerobic biological treatment systems, the main purpose of hydrolysis is to convert non-dissolved organic matter in the original wastewater into soluble organic matter, primarily transforming recalcitrant organic matter into readily biodegradable organic matter, thereby improving the biodegradability of the wastewater and facilitating subsequent aerobic treatment. In mixed anaerobic nitrification systems, the purpose of hydrolysis-acidification is to provide substrates for methanogenesis in the mixed anaerobic nitrification process. In two-phase anaerobic nitrification systems, the acid-producing phase separates the acid-producing and methanogenic phases in mixed anaerobic nitrification to create optimal environments for each.

[0039] Primary A / O tank and secondary A / O tank: The AO system connects the anaerobic section at the front and the aerobic section at the back. The DO in the A section is no more than 0.2 mg / L, and the DO in the O section is 2 to 4 mg / L. In the anaerobic stage, heterotrophic bacteria hydrolyze suspended pollutants such as starch, fiber, and carbohydrates, as well as soluble organic matter in wastewater, into organic acids. This breaks down large organic molecules into smaller ones and converts insoluble organic matter into soluble organic matter. When these anaerobic hydrolysis products enter the aerobic tank for aerobic treatment, the biodegradability and oxygen efficiency of the wastewater are improved. In the anaerobic stage, heterotrophic bacteria ammonify pollutants such as proteins and fats (by releasing ammonia (NH3, NH4+) through ammoniation). Under sufficient oxygen supply, the nitrification of autotrophic bacteria oxidizes NH3-N (NH4+) into NO3-, which is then returned to the original tank through reflux control. Under anaerobic conditions, the denitrification of heterotrophic bacteria reduces NO3- to molecular nitrogen (N2), completing the C, N, and O cycle in the ecosystem and achieving harmless treatment of wastewater.

[0040] Based on the above description of the basic biological denitrification process, and combined with years of experience in denitrification of coking wastewater, it can be seen that the (A / O) biological denitrification process has the following advantages: 1. High efficiency: This system has a high removal effect on organic matter, ammonia nitrogen and other substances in wastewater. When the total retention time is greater than 90 hours, the effluent after biological denitrification can be treated by MBR membrane to reduce the COD value to below 50 mg / L. Other indicators also meet the discharge standards, and the total nitrogen removal rate is over 90%.

[0041] 2. The process is simple, the investment is low, and the operating cost is low. The system uses the organic matter in the wastewater as the carbon source for denitrification, so there is no need to add expensive carbon sources such as methanol. The alkalinity generated during the denitrification process reduces the alkali consumption required for the nitrification process.

[0042] 3. High volumetric loading rate: Due to the use of enhanced biological treatment in the nitrification stage and membrane technology with high-concentration sludge in the denitrification stage, the sludge concentration of nitrification and denitrification is effectively increased, resulting in a higher volumetric loading rate compared with similar systems abroad.

[0043] 4. The anaerobic / aerobic system has strong resistance to load shocks; when the influent water quality fluctuates greatly or the pollutant concentration is high, the system can maintain normal operation, so operation and management are also very simple; through the comparison of the above processes, it is not difficult to see that the biological denitrification system itself denits while also degrading COD and other organic matter. Combining the characteristics of water volume and water quality, the adoption of the facultative / aerobic (A / O) biological denitrification (internal circulation) system process enables the sewage treatment device to not only meet the denitrification requirements, but also meet the discharge standards for other indicators.

[0044] A / MBR Tank: MBR, also known as membrane bioreactor, is a novel water treatment technology that combines activated sludge process with membrane separation technology. There are many types of membranes. Classified by separation mechanism, there are reactive membranes, ion exchange membranes, and osmotic membranes; classified by membrane properties, there are natural membranes (biological membranes) and synthetic membranes (organic membranes and inorganic membranes); classified by membrane structure, there are flat sheet type, tubular type, spiral type, and hollow fiber type, etc.

[0045] Compared to many traditional biological water treatment systems, MBR has the following key characteristics: 1. High-quality and stable effluent: Due to the efficient separation effect of the membrane, the separation effect is far better than that of traditional sedimentation tanks. The treated effluent is extremely clear, with suspended solids and turbidity close to zero. Bacteria and viruses are significantly removed. The effluent quality is better than the water quality standards for domestic miscellaneous water issued by the Ministry of Construction. It can generally be directly reused as non-drinking municipal miscellaneous water.

[0046] Meanwhile, membrane separation also allows microorganisms to be completely trapped in the bioreactor, enabling the system to maintain a high concentration of microorganisms. This not only improves the overall removal efficiency of pollutants by the reactor and ensures good effluent quality, but also makes the reactor highly adaptable to various changes in influent load (water quality and quantity), resistant to shock loads, and able to stably obtain high-quality effluent.

[0047] 2. Low residual sludge production: The system can operate under high volumetric load and low sludge load conditions, resulting in low residual sludge production and reduced sludge treatment costs.

[0048] 3. Small footprint, not limited by the location of installation; the bioreactor can maintain a high concentration of microorganisms, the treatment device has a high volumetric load, and the footprint is greatly saved; the system has a simple process, compact structure, and saves space, and is not limited by the location of installation, making it suitable for any occasion, and can be made into a ground-level, semi-underground, or underground system.

[0049] 4. It can remove ammonia nitrogen and recalcitrant organic matter; because microorganisms are completely retained in the bioreactor, it is conducive to the retention and growth of slow-growing microorganisms such as nitrifying bacteria, thereby improving the nitrification efficiency of the system. At the same time, it can increase the hydraulic retention time of some recalcitrant organic matter in the system, which is beneficial to improving the degradation efficiency of recalcitrant organic matter.

[0050] 5. Convenient operation and management, easy to achieve automatic control; the system realizes complete separation of hydraulic retention time (HRT) and sludge retention time (SRT), making operation and control more flexible and stable. It is a new technology that is easy to equip in sewage treatment and can realize microcomputer automatic control, thus making operation and management more convenient.

[0051] Sludge thickeners: Structures used for sludge thickening, generally divided into two types: intermittent operation and continuous operation. The former is mainly used in small sewage treatment plants or industrial sewage treatment plants, while the latter is used in large and medium-sized sewage treatment plants. Continuous gravity thickeners are similar in form to radial flow sedimentation tanks, and can be divided into three types: those with sludge scrapers and sludge mixing devices, those without sludge scrapers, and multi-layer thickeners (with sludge scrapers).

[0052] During implementation, C30 concrete can be used for the water-filled concrete structures of pools one through seven, with self-waterproofing measures and a seepage resistance grade of not less than S6; other reinforced concrete structures should use C30 concrete to meet frost resistance requirements; C20 concrete should be used for the pool filling concrete, and C15 concrete should be used for the foundation pad. C20 concrete should be used for the building foundation, while C30 concrete should be used for general beam and slab structures to meet frost resistance requirements, and ordinary Portland cement should be used.

[0053] The workflow of this invention is as follows: Wastewater flows by gravity to the equalization tank, where the flow rate and water quality are regulated and homogenized. It is then pumped to the coagulation sedimentation tank. In the reaction tank, the wastewater is thoroughly mixed with added chemicals, and the pH is controlled to form flocs. These flocs then enter the sedimentation zone for sludge-water separation. The sludge is discharged to the sludge tank, and the clarified liquid enters the hydrolysis acidification tank. In the hydrolysis tank, the wastewater undergoes hydrolysis and acidification, converting large organic molecules into smaller molecules and recalcitrant substances into readily biodegradable ones. The effluent then enters the primary A / O + secondary A / O + A / MBR tank. In the secondary A / O + A / MBR tank, under the action of aerobic and facultative anaerobic bacteria, most of the organic matter is converted into carbon dioxide and water, and a small portion is assimilated into biological colonies. The wastewater is then pumped to a disinfection device for discharge and reuse. The sludge is compressed into sludge cakes using a screw press, and the wastewater generated during the sludge compression process is further recycled.

[0054] This wastewater treatment system employs automated control technology to monitor and control the wastewater treatment process, ensuring effluent quality and quantity, improving production efficiency, and reducing energy consumption. To ensure stable and reliable operation of the wastewater treatment system and convenient maintenance to meet water quality standards, this system adopts a combined centralized system control and on-site control approach. Its main functions include: 1. Operating the system normally according to pre-defined software programs; 2. Measuring indicators such as pH and liquid level online, and timely accumulating and tracing historical flow data; 3. Using a liquid level control system to detect the liquid levels in the regulating tank and collection tank, and controlling the operation of the booster pumps.

[0055] The wastewater treatment effects at each stage of this application are shown in the table below: Table 1

[0056] The central guide tube is a key component in wastewater treatment and industrial sedimentation systems, mainly used to guide the uniform distribution of fluid. Its core structure includes the main pipe, the bell mouth, and the reflector cone.

[0057] Perforated aeration components are an aeration technology widely used in wastewater treatment and other engineering projects. By setting holes in the pipes, air is released into the liquid in the form of bubbles, promoting oxygen transfer and liquid mixing.

[0058] Each dosing device is a standard water treatment device, so it will not be described in detail.

[0059] The various tanks in this invention are connected by pipes, and the transfer of wastewater, sludge, etc. is achieved through the use of various pumps. The connection positions of the pipes can be adjusted as needed.

[0060] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions conceived without inventive effort should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope defined in the claims.

Claims

1. A modular, high-efficiency NMP wastewater treatment system, characterized in that: include Equalization tanks used for homogenizing and equalizing wastewater; Coagulation sedimentation tanks that use flocculants to treat wastewater; Hydrolysis and acidifying bacteria are used to hydrolyze insoluble organic matter in wastewater into soluble organic matter, and to transform large molecules that are difficult to biodegrade into small molecules that are easy to biodegrade in a hydrolysis and acidification tank. Primary and secondary A / O tanks are used to remove organic matter from wastewater. A / MBR tank used to separate bacteria and viruses from wastewater and retain microorganisms in wastewater; A water production tank used for storing treated wastewater; Sludge tanks used for sludge thickening; Screw press for sludge defiltration; The equalization tank, coagulation sedimentation tank, hydrolysis acidification tank, primary A / O tank, secondary A / O tank, A / MBR tank, and product water tank are connected in sequence. The equalization tank, coagulation sedimentation tank, sludge tank, and screw press are connected in sequence.

2. The modular high-efficiency NMP wastewater treatment system according to claim 1, characterized in that: The primary A / O tank, secondary A / O tank, A / MBR tank, and sludge tank are connected.

3. The modular high-efficiency NMP wastewater treatment system according to claim 1, characterized in that: The screw press is connected to the equalization tank.

4. The modular high-efficiency NMP wastewater treatment system according to claim 1, characterized in that: The regulating tank includes a tank body, a basket grid, a lift pump, an electromagnetic flow meter, a level gauge, a heating device, a perforated aeration assembly, and pipelines.

5. The modular high-efficiency NMP wastewater treatment system according to claim 1, characterized in that: The coagulation sedimentation tank includes a tank body, a reaction mixer, a pH meter, a central guide tube, a sludge pump, a compound agent dosing device, an acid and alkali dosing device, a PAM dosing device, and pipelines.

6. The modular high-efficiency NMP wastewater treatment system according to claim 1, characterized in that: The hydrolysis acidification tank includes a tank body, a submersible mixer, a perforated aeration assembly, and pipelines.

7. The modular high-efficiency NMP wastewater treatment system according to claim 1, characterized in that: Both the primary A / O tank and the secondary A / O tank include a tank body, a submersible mixer, a microporous aerator, a mixed liquor return pump, a perforated aeration assembly, and pipelines.

8. The modular high-efficiency NMP wastewater treatment system according to claim 1, characterized in that: The A / MBR tank includes a tank body (five), a hyperboloid mixer, a perforated aeration assembly (four), an MBR assembly, a dosing assembly, an electromagnetic flow meter (two), a sludge return pump, a level gauge (two), and pipelines.

9. The modular high-efficiency NMP wastewater treatment system according to claim 1, characterized in that: The water production tank includes a tank body, a water production pump, a tubular sterilizer, and pipelines.

10. The modular high-efficiency NMP wastewater treatment system according to claim 1, characterized in that: The sludge tank includes a tank body, a backwash pump, a frame mixer, and pipelines.

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