Regeneration waste liquid reduction efficient treatment system and use method thereof

Abstract

The invention relates to a regeneration waste liquid reduction efficient treatment system and a use method thereof. The system comprises a waste water conveying pipeline valve group, a waste water storage tank, an aerobic reactor, an anoxic reactor and a leaching waste water tank, the wastewater conveying pipeline valve group comprises a cation resin regeneration wastewater conveying pipe, an anion resin regeneration wastewater conveying pipe, a wastewater header pipe, a wastewater pipe and a leaching wastewater pipe; the cation resin regeneration wastewater conveying pipe is connected with the saturated cation resin, the anion resin regeneration wastewater conveying pipe is connected with the saturated anion resin, the wastewater pipe is connected with the wastewater storage tank, and the leaching wastewater pipe is connected with the leaching wastewater tank; the cation resin regeneration wastewater conveying pipe, the anion resin regeneration wastewater conveying pipe, the wastewater pipe and the leaching wastewater pipe are all connected with the wastewater header pipe and are provided with valves; the aerobic reactor and the anoxic reactor are both communicated with the wastewater storage tank, and the aerobic reactor is communicated with the anoxic reactor. Compared with the prior art, the sewage treatment device has the advantages that the sewage quantity is reduced, the sewage treatment difficulty and cost are also reduced, and the like.

Description

Technical Field

[0001] The present invention relates to the technical field of water treatment, and in particular to a system for efficiently treating regenerated waste liquid with reduced volume and a method for using the system. Background Art

[0002] Condensate polishing systems in industrial settings, such as nuclear power plants and thermal power plants, often generate large quantities of high-ammonia nitrogen, acidic and alkaline wastewater during startup and operation. Ammonia nitrogen concentrations can typically reach hundreds to thousands of milligrams per liter. For example, at pressurized water reactor (PWR) nuclear power plants, the condensate polishing system discharges large amounts of high-nitrogen acidic and alkaline wastewater daily during startup. However, after a few weeks of stable startup, this discharge randomly ceases. During relatively stable operation, wastewater is randomly discharged one to three times per month, and in the event of an accident, large amounts of wastewater can be generated suddenly. This wastewater discharge is irregular, with large variations in volume and concentration, creating significant shock loads and posing significant challenges to subsequent stable treatment.

[0003] Patent CN214457466U discloses a combined anaerobic ammonium oxidation (ANAMMOX) and A / O biological process for treating high-ammonia nitrogen wastewater. The device comprises an aeration regulating tank, a water distribution tank, an ANAMMOX reactor, an A / O reactor module, and a clear water tank. The water distribution tank is connected to the aeration regulating tank and the ANAMMOX reactor, respectively. Both the aeration regulating tank and the water distribution tank are connected to a sodium hydroxide dosing device. The ANAMMOX reactor is equipped with a first microporous aerator and connected to a nutrient salt dosing device. The A / O reactor module comprises an anoxic tank, an aerobic tank, and an inclined plate clarifier. The anoxic tank is connected to a glucose dosing device, and the aerobic tank is connected to a Roots blower. The clear water tank is connected to the inclined plate clarifier. This device solves the problem of difficult-to-treat high-ammonia nitrogen wastewater in power plants. The treated water can be reused as desulfurization process water, solving the foaming problem caused by eutrophication and reducing the pressure on the power plant to discharge wastewater. However, this device has certain drawbacks in terms of wastewater reduction. Summary of the Invention

[0004] The purpose of the present invention is to provide a system for efficiently reducing the amount of regenerated waste liquid and a method for using the system, which can reduce the amount of high-ammonia nitrogen acid-base waste liquid and efficiently treat it.

[0005] The object of the present invention can be achieved by the following technical solutions: a system for efficiently treating regeneration wastewater by reducing the amount of wastewater, comprising a wastewater delivery pipeline valve group, a wastewater storage tank, an aerobic reactor, an anoxic reactor and a leaching wastewater tank;

[0006] The wastewater delivery pipeline valve group includes a cation resin regeneration wastewater delivery pipe, an anion resin regeneration wastewater delivery pipe, a wastewater main pipe, a wastewater pipe and a leaching wastewater pipe;

[0007] The cation resin regeneration wastewater delivery pipe is connected to the saturated cation resin, the anion resin regeneration wastewater delivery pipe is connected to the saturated anion resin, the wastewater pipe is connected to the wastewater storage tank, and the leaching wastewater pipe is connected to the leaching wastewater tank;

[0008] The cation resin regeneration wastewater delivery pipe, the anion resin regeneration wastewater delivery pipe, the wastewater pipe and the leaching wastewater pipe are all connected to the wastewater main pipe and are provided with valves;

[0009] The aerobic reactor and the anoxic reactor are both communicated with the wastewater storage tank, and the aerobic reactor is communicated with the anoxic reactor.

[0010] In the present invention, the saturated cation resin and the saturated anion resin are both connected to the wastewater storage tank and the leaching wastewater tank through the arrangement of the wastewater delivery pipeline valve group.

[0011] Preferably, a positive valve is provided on the cation resin regeneration wastewater delivery pipe, a negative valve is provided on the anion resin regeneration wastewater delivery pipe, a wastewater valve is provided on the wastewater pipe, and a drain valve is provided on the rinsing wastewater pipe.

[0012] Preferably, the wastewater main is provided with an ammonia nitrogen detector, a conductivity meter, and a pH detector.

[0013] Preferably, the aerobic reactor is provided with aerobic fillers, and the aerobic fillers are loaded with nitrifying bacteria;

[0014] The bottom of the wastewater storage tank is provided with an air supply port, and the top is connected with the aerobic reactor.

[0015] Further preferably, the bottom of the aerobic filler is connected to the top of the wastewater storage tank.

[0016] Further preferably, a water supply port is provided below the aerobic filler, and a rinsing pipe is provided above the aerobic filler. The rinsing pipe is connected to the bottom of the aerobic filler through a circulation pipe and a circulation pump.

[0017] Further preferably, the aerobic filler includes a composite mineral filler composed of marine organism shells and multi-element volcanic rock filler.

[0018] Further preferably, the aerobic filler is in a spiral shape or a wheel shape.

[0019] More preferably, the wheel-shaped filler includes inner and outer ring layers and a plurality of radial connecting portions radially arranged between the inner and outer ring layers.

[0020] Preferably, the aerobic reactor is arranged above the anoxic reactor, and the anoxic reactor is connected to the bottom of the aerobic reactor through a pipette line and a pipette valve.

[0021] Preferably, multi-element volcanic rock powder is added into the anoxic reactor, and anaerobic ammonia-oxidizing bacteria are attached to the powder.

[0022] Preferably, the anoxic reactor is connected to the bottom of the wastewater storage tank through a pipette and a pipette pump.

[0023] Preferably, a stirrer is provided in the anoxic reactor.

[0024] Preferably, the anoxic reactor is connected to a drug feeding port for adding a denitrification carbon source.

[0025] Preferably, the anoxic reactor is connected to a water outlet for discharging water.

[0026] Preferably, the saturated cation resin and the saturated anion resin are both components of a condensate polishing system.

[0027] Preferably, the saturated cation resin is provided with an acid inlet and a first water inlet.

[0028] Further preferably, dilute hydrochloric acid is fed into the saturated cation resin through the acid inlet to produce highly concentrated nitrogen-containing waste acid.

[0029] Further preferably, the input end of the saturated cation resin is provided with an acid inlet and a first water inlet, and the output end is connected to a cation resin regeneration wastewater delivery pipe.

[0030] Preferably, the saturated anion resin is provided with an alkali inlet and a second water inlet.

[0031] Further preferably, a dilute sodium hydroxide solution is transported to the saturated anion resin through the alkali inlet to produce high-concentration spent alkali.

[0032] Further preferably, the input end of the saturated anion resin is provided with an alkali inlet and a second water inlet, and the output end is connected to an anion resin regeneration wastewater delivery pipe.

[0033] In the present invention, the saturated cation resin is connected to the wastewater main pipe through the cation resin regeneration wastewater delivery pipe, the saturated anion resin is connected to the wastewater main pipe through the anion resin regeneration wastewater delivery pipe, the wastewater main pipe is connected to the wastewater storage tank through the wastewater pipe, and is connected to the elution wastewater tank through the elution wastewater pipe.

[0034] Preferably, the regeneration waste liquid reduction and efficient treatment system further includes a control component.

[0035] Further preferably, the control component is connected to a valve and a pump.

[0036] Further preferably, the control component is connected to the acid inlet valve, the first water inlet valve, the positive valve, the alkali inlet valve, the second water inlet valve, the negative valve, the air supply valve, the water supply valve, the circulation pump, the pipetting valve, the pipetting pump, the drug supply valve, the water outlet valve, the wastewater valve, and the drain valve.

[0037] Further preferably, the control component is connected to an ammonia nitrogen detector, a conductivity meter, and a pH detector.

[0038] Further preferably, the control component includes a PLC controller.

[0039] Preferably, the aerobic reactor and the anoxic reactor are connected to temperature control equipment.

[0040] Preferably, a water treatment component is provided on the rinsing wastewater pool.

[0041] In the present invention, the water treatment component of the rinsing wastewater pool can treat the rinsing wastewater therein when necessary to ensure that the rinsing wastewater meets the discharge standards.

[0042] Further preferably, the water treatment component includes a nano bubble generator and an ozone generator.

[0043] A method for using the above-mentioned regeneration waste liquid reduction and efficient treatment system comprises the following steps:

[0044] S1: discharge the high-concentration nitrogen-containing waste acid of the saturated cationic resin into the wastewater storage tank, and then discharge the leaching wastewater of the saturated cationic resin into the leaching wastewater tank;

[0045] S2: The high-concentration waste alkali of the saturated anion resin is discharged into the wastewater storage tank, neutralized with the high-concentration nitrogen-containing waste acid to neutrality, and then the leaching wastewater of the saturated anion resin is discharged into the leaching wastewater tank;

[0046] S3: Blowing air into the wastewater storage tank to generate ammonia gas which enters the aerobic reactor for aerobic ammonia oxidation reaction and is converted into nitrite;

[0047] S4: The nitrite in the aerobic reactor and the ammonia nitrogen wastewater in the wastewater storage tank enter the anoxic reactor for anaerobic ammonia oxidation reaction and are converted into nitrogen.

[0048] Preferably, the method for using the regeneration waste liquid reduction and efficient treatment system specifically comprises the following steps:

[0049] S1: The positive valve and wastewater valve are opened, the negative valve and drain valve are closed, and the acid washing is carried out to discharge the high-concentration nitrogen-containing waste acid of the saturated positive resin into the wastewater storage tank. During the demineralized water elution, the wastewater valve is closed and the drain valve is opened to discharge the elution wastewater of the saturated positive resin into the elution wastewater tank;

[0050] S2: The anion valve and wastewater valve are opened, the anion valve and drain valve are closed, and alkali washing is performed. The high-concentration waste alkali of the saturated anion resin is discharged into the wastewater storage tank and neutralized with the high-concentration nitrogen-containing waste acid to neutrality. When eluting with deionized water, the wastewater valve is closed and the drain valve is opened to discharge the elution wastewater of the saturated anion resin into the elution wastewater tank;

[0051] S3: Open the air supply port and blow air into the wastewater storage tank to generate ammonia gas which enters the aerobic reactor for aerobic ammonia oxidation reaction and is converted into nitrite;

[0052] S4: The nitrite in the aerobic reactor and the ammonia nitrogen wastewater in the wastewater storage tank enter the anoxic reactor for anaerobic ammonia oxidation reaction and are converted into nitrogen.

[0053] Preferably, the pickling time is 20 to 60 minutes.

[0054] Preferably, the alkali washing time is 25 to 40 minutes.

[0055] Preferably, the method for using the regeneration waste liquid reduction and efficient treatment system specifically comprises the following steps:

[0056] S1: The positive valve and wastewater valve are opened, the negative valve and drain valve are closed, and the acid washing is carried out. The high-concentration nitrogen-containing waste acid of the saturated positive resin is discharged into the wastewater storage tank. After rinsing with deionized water for 3 to 5 minutes, the wastewater valve is closed and the drain valve is opened to discharge the elution wastewater of the saturated positive resin into the elution wastewater tank;

[0057] S2: The anion valve and wastewater valve are opened, the anion valve and drain valve are closed, and alkali washing is performed. The high-concentration waste alkali of the saturated anion resin is discharged into the wastewater storage tank, neutralized with the high-concentration nitrogen-containing waste acid to neutrality, and then rinsed with deionized water for 3 to 5 minutes. The wastewater valve is closed, the drain valve is opened, and the leaching wastewater of the saturated anion resin is discharged into the leaching wastewater tank;

[0058] S3: Open the air supply port and blow air into the wastewater storage tank to generate ammonia gas which enters the aerobic reactor for aerobic ammonia oxidation reaction and is converted into nitrite;

[0059] S4: The nitrite in the aerobic reactor and the ammonia nitrogen wastewater in the wastewater storage tank enter the anoxic reactor for anaerobic ammonia oxidation reaction and are converted into nitrogen.

[0060] Compared with the prior art, the present invention has the following beneficial effects:

[0061] 1. The present invention can efficiently treat high-ammonia nitrogen acid and alkali waste liquid through the coordinated arrangement of a wastewater conveying pipeline valve group, a wastewater storage tank, an aerobic reactor, an anoxic reactor and a leaching wastewater tank, fully utilizing the characteristics of high-concentration nitrogen-containing waste acid and high-concentration waste alkali as well as the characteristics of saturated anionic and cation resin leaching wastewater, thereby significantly reducing the amount of sewage.

[0062] 2. The present invention adopts an amphibious process to treat high-concentration nitrogen-containing waste acid and high-concentration waste alkali. Through aerobic ammonia oxidation of ammonia nitrogen in the fresh water system and anoxic ammonia oxidation of ammonia nitrogen in the salt water system, a part of the ammonia nitrogen is converted into ammonia gas and treated by gas phase washing oxidation method. Aerobic ammonia oxidation reaction is carried out in a low-salt system to convert it into nitrite nitrogen; the other part of the ammonia nitrogen is converted into nitrogen gas through anaerobic ammonia oxidation reaction with the part of nitrite nitrogen in a high-salt liquid phase system, thereby achieving the purpose of denitrification with high efficiency.

[0063] 3. This invention provides a highly efficient treatment system for wastewater reduction and its use method. Through in-depth analysis of common industry issues, it proposes a strategy for source separation of pollutants. Based on the characteristics of the wastewater generated by this strategy, a high-efficiency treatment strategy based on quality is proposed. This reduces wastewater volume while also reducing the difficulty and cost of wastewater treatment. This method is applicable not only to new construction projects but also to engineering renovation projects.

[0064] 4. The present invention fully utilizes or processes the waste liquid and waste gas in the wastewater storage tank through the design of the position and connection relationship of the wastewater storage tank, aerobic reactor and anoxic reactor, and can also use gravity to realize the transportation of materials between the aerobic reactor and the anoxic reactor.

[0065] 5. The system of the present invention has a high degree of integration. Only one set of wastewater main pipes, wastewater pipes, leaching wastewater pipes and related valves or accessories are needed to achieve the alternating transportation of high-concentration nitrogen-containing waste acid, acidic leaching wastewater, high-concentration waste alkali and alkaline leaching wastewater, thereby reducing losses and lowering costs.

[0066] 6. The system of the present invention has strong adaptability and can cope with different waste liquid treatment volumes and concentration requirements. It is suitable for subsequent stable treatment of condensate polishing systems in industrial scenarios such as nuclear power plants and thermal power plants.

[0067] 7. Compared with the traditional method, the present invention can reduce the amount of wastewater generated by treating high-ammonia nitrogen acid-base waste liquid by 40-70%. BRIEF DESCRIPTION OF THE DRAWINGS

[0068] Figure 1 It is a structural diagram of the processing system of the present invention;

[0069] Figure 2 This is a structural diagram of the wastewater delivery pipeline valve group of the present invention;

[0070] Figure 3 This is one of the structural schematic diagrams of the wastewater storage tank, aerobic reactor and anoxic reactor of the present invention;

[0071] Figure 4 This is the second structural diagram of the wastewater storage tank, aerobic reactor and anoxic reactor of the present invention;

[0072] In the figure: 1-wastewater delivery pipeline valve group, 11-cation resin regeneration wastewater delivery pipe, 111-cation valve, 12-anion resin regeneration wastewater delivery pipe, 121-anion valve, 13-wastewater main, 14-wastewater pipe, 141-wastewater valve, 15-rinsing wastewater pipe, 151-drain valve, 2-wastewater storage tank, 21-air supply port, 3-aerobic reactor, 31-aerobic filler, 32-water supply port, 33-rinsing pipe, 34-circulation pump, 4-anoxic reactor, 41-pipette valve, 42-pipette pump, 43-agitator, 44-drug supply port, 45-water outlet, 5-rinsing wastewater tank, 6-saturated cation resin, 61-acid inlet, 62-first water inlet, 7-saturated anion resin, 71-alkali inlet, 72-second water inlet. DETAILED DESCRIPTION

[0073] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

[0074] Unless otherwise specified, the reagents, methods, instruments and equipment used in the present invention are conventional reagents, methods, instruments and equipment in the art. Unless otherwise specified, the reagents and materials used in the following examples are commercially available.

[0075] Example 1

[0076] A high-efficiency treatment system for reducing the amount of regenerated waste liquid is connected to the condensate polishing system. The structure is as follows: Figure 1 As shown, it includes a wastewater conveying pipeline valve group 1, a wastewater storage tank 2, an aerobic reactor 3, an anoxic reactor 4 and a leaching wastewater tank 5.

[0077] Among them, such as Figure 2 As shown, the wastewater conveying pipeline valve group 1 includes a cation resin regeneration wastewater conveying pipe 11, an anion resin regeneration wastewater conveying pipe 12, a wastewater main pipe 13, a wastewater pipe 14 and a rinsing wastewater pipe 15.

[0078] Specifically, the cation resin regeneration wastewater delivery pipe 11 is connected to the saturated cation resin 6 of the condensate polishing system, the anion resin regeneration wastewater delivery pipe 12 is connected to the saturated anion resin 7 of the condensate polishing system, the wastewater pipe 14 is connected to the wastewater storage tank 2, the rinse wastewater pipe 15 is connected to the rinse wastewater tank 5, and the wastewater main pipe 13 is connected to the cation resin regeneration wastewater delivery pipe 11, the anion resin regeneration wastewater delivery pipe 12, the wastewater pipe 14, and the rinse wastewater pipe 15. The cation resin regeneration wastewater delivery pipe 11, the anion resin regeneration wastewater delivery pipe 12, the wastewater pipe 14, and the rinse wastewater pipe 15 are respectively provided with a positive valve 111, a negative valve 121, a wastewater valve 141, and a drain valve 151. By adjusting the opening and closing of each valve, the cation and anion resin regeneration wastewater can be switched and delivered between the wastewater storage tank 2 and the rinse wastewater tank 5.

[0079] like Figure 3 As shown, the aerobic reactor 3 and the anoxic reactor 4 are both connected to the wastewater storage tank 2 , and the aerobic reactor 3 is connected to the anoxic reactor 4 .

[0080] The method for using the regeneration waste liquid reduction and efficient treatment system of this embodiment includes the following steps:

[0081] S1: When the saturated cationic resin 6 is acid-washed, the positive valve 111 and the wastewater valve 141 are opened, the negative valve 121 and the drain valve 151 are closed, and the high-concentration nitrogen-containing waste acid of the saturated cationic resin 6 is discharged into the wastewater storage tank 2. When the demineralized water is eluted, the wastewater valve 141 is closed and the drain valve 151 is opened, and then the elution wastewater of the saturated cationic resin 6 is discharged into the elution wastewater tank 5;

[0082] S2: When the saturated anion resin 7 is alkali-washed, the anion valve 121 and the wastewater valve 141 are opened, the yang valve 111 and the drain valve 151 are closed, and the high-concentration waste alkali of the saturated anion resin 7 is discharged into the wastewater storage tank 2, and neutralized with the high-concentration nitrogen-containing waste acid to neutrality. When the deionized water is eluted, the wastewater valve 141 is closed and the drain valve 151 is opened, and then the elution wastewater of the saturated anion resin 7 is discharged into the elution wastewater tank 5;

[0083] S3: Blowing air into the wastewater storage tank 2 to generate ammonia gas which enters the aerobic reactor 3 for aerobic ammonia oxidation reaction and is converted into nitrite;

[0084] S4: The nitrite in the aerobic reactor 3 and the ammonia nitrogen wastewater in the wastewater storage tank 2 enter the anoxic reactor 4 to undergo anaerobic ammonia oxidation reaction and are converted into nitrogen gas.

[0085] Example 2

[0086] A highly efficient treatment system for reducing the amount of regeneration waste liquid is disclosed. A saturated cation resin 6 is provided with an acid inlet 61 and a first water inlet 62, and a saturated anion resin 7 is provided with an alkali inlet 71 and a second water inlet 72. Acid can be delivered to the saturated cation resin 6 through the acid inlet 61 to produce highly concentrated nitrogen-containing waste acid. Water can be delivered to the saturated cation resin 6 through the first water inlet 62 to produce leaching waste water. Alkali can be delivered to the saturated anion resin 7 through the alkali inlet 71 to produce highly concentrated waste alkali. Water can be delivered to the saturated anion resin 7 through the second water inlet 72 to produce leaching waste water.

[0087] The method for using the regeneration waste liquid reduction and efficient treatment system of this embodiment includes the following steps:

[0088] S1: Open the acid inlet 61, the cation valve 111, and the wastewater valve 141 to discharge the high-concentration nitrogen-containing waste acid of the saturated cation resin 6 into the wastewater storage tank 2, then close the acid inlet 61 and the wastewater valve 141, open the first water inlet 62 and the drain valve 151, and discharge the elution wastewater of the saturated cation resin 6 into the elution wastewater tank 5;

[0089] S2: Close the first water inlet 62, the positive valve 111, and the drain valve 151, open the alkali inlet 71, the negative valve 121, and the wastewater valve 141, and discharge the high-concentration waste alkali of the saturated anion resin 7 into the wastewater storage tank 2, neutralize it with the high-concentration nitrogen-containing waste acid to neutrality, then close the alkali inlet 71 and the wastewater valve 141, open the second water inlet 72 and the drain valve 151, and discharge the leaching wastewater of the saturated anion resin 7 into the leaching wastewater tank 5;

[0090] S3: Blowing air into the wastewater storage tank 2 to generate ammonia gas which enters the aerobic reactor 3 for aerobic ammonia oxidation reaction and is converted into nitrite;

[0091] S4: The nitrite in the aerobic reactor 3 and the ammonia nitrogen wastewater in the wastewater storage tank 2 enter the anoxic reactor 4 to undergo anaerobic ammonia oxidation reaction and are converted into nitrogen gas.

[0092] As a preferred technical solution, the wastewater main pipe 13 is provided with an ammonia nitrogen detector, a conductivity meter and a pH detector.

[0093] The rest is the same as Example 1.

[0094] Example 3

[0095] A regeneration waste liquid reduction and efficient treatment system, wherein an aerobic reactor 3 is arranged above an anoxic reactor 4, and an air supply port 21 is provided at the bottom of a wastewater storage tank 2, and the top is connected to the aerobic reactor 3.

[0096] An aerobic filler 31 is provided in the aerobic reactor 3, on which nitrifying bacteria are loaded. The bottom of the aerobic filler 31 is connected to the top of the wastewater storage tank 2. A water supply port 32 is provided below the aerobic filler 31, and a leaching pipe 33 is provided above the aerobic filler 31. The leaching pipe 33 is connected to the bottom of the aerobic filler 31 through a circulation pipe and a circulation pump 34.

[0097] The anoxic reactor 4 is connected to the bottom of the aerobic filler 31 through a pipette and a pipette valve 41, and is connected to the bottom of the wastewater storage tank 2 through a pipette and a pipette pump 42. Anoxic filler is added to the anoxic reactor 4, and anaerobic ammonia-oxidizing bacteria are attached to the anoxic filler. A water outlet 45 is provided on the anoxic reactor 4.

[0098] The method for using the regeneration waste liquid reduction and efficient treatment system of this embodiment includes the following steps:

[0099] S1: discharge the high-concentration nitrogen-containing waste acid of the saturated cation resin 6 into the wastewater storage tank 2, and then discharge the leaching wastewater of the saturated cation resin 6 into the leaching wastewater tank 5;

[0100] S2: The high-concentration waste alkali of the saturated anion resin 7 is discharged into the wastewater storage tank 2, and neutralized with the high-concentration nitrogen-containing waste acid to neutrality, and then the leaching wastewater of the saturated anion resin 7 is discharged into the leaching wastewater tank 5;

[0101] S3: Air is blown into the wastewater storage tank 2 through the air supply port 21 to generate ammonia gas which enters the aerobic reactor 3. The ammonia gas is then converted into nitrite by aerobic oxidation reaction of nitrifying bacteria on the aerobic filler 31. During this process, atomized leaching is performed through the circulation pipe, circulation pump 34 and leaching pipe 33.

[0102] S4: The nitrite in the aerobic reactor 3 is transported to the anoxic reactor 4 through the pipette and pipette valve 41, and the ammonia nitrogen wastewater in the wastewater storage tank 2 is transported to the anoxic reactor 4 through the pipette and pipette pump 42, and converted into nitrogen gas through the anaerobic ammonia oxidation reaction of the anaerobic ammonia oxidizing bacteria on the anoxic filler.

[0103] S5: The water treated by the anoxic reactor 4 flows out from the water outlet 45 .

[0104] The rest is the same as Example 1.

[0105] Example 4

[0106] A highly efficient treatment system for reducing the amount of regenerated wastewater is provided. An anoxic reactor 4 is provided with a stirrer 43 and is connected to a drug-feeding port 44 for adding a denitrification carbon source.

[0107] Furthermore, in this embodiment, Figure 4 As shown, a weir plate is provided at the bottom of the aerobic reactor 3 near the wastewater storage tank 2. Air is introduced above the weir plate to control the liquid level in the aerobic reactor 3 below the height of the weir plate. The top of the pipette line extends upward through the aerobic reactor 3 and its height does not exceed the weir plate.

[0108] In this embodiment, a weir plate is provided on the side of the anoxic reactor 4 close to the wastewater storage tank 2 , and gas is discharged above the weir plate to control the liquid level in the anoxic reactor 4 to be below the height of the weir plate.

[0109] The rest is the same as Example 3.

[0110] Example 5

[0111] A highly efficient treatment system for reducing the amount of regenerated waste liquid. In this embodiment, a diaphragm made of an air-permeable but water-impermeable material is provided above the weir plate at the bottom of the aerobic reactor 3, allowing ammonia generated by aeration in the wastewater storage tank 2 and nitrogen generated by the anoxic reactor 4 to enter the aerobic reactor 3, but not allowing the liquid in the aerobic reactor 3 to overflow.

[0112] In this embodiment, a diaphragm made of an air-permeable but water-impermeable material is provided above the weir plate of the anoxic reactor 4 to allow the nitrogen gas generated by the anoxic reactor 4 to flow out.

[0113] The rest is the same as Example 4.

[0114] Example 6

[0115] A system for efficiently treating regeneration waste liquid by reducing the amount of waste liquid and a method for using the same, comprising the following contents:

[0116] 1. The saturated cationic resin 6 is regenerated and washed with dilute hydrochloric acid. The generated high-concentration nitrogen-containing waste acid is discharged to the wastewater storage tank 2 through the cationic valve 111 and the wastewater valve 141.

[0117] 2. After acid washing, the saturated cationic resin 6 requires a large amount of deionized water for leaching. The first few minutes of the leaching wastewater discharge still contain high-concentration nitrogen-containing waste acid, so it continues to be discharged into the wastewater storage tank 2. All subsequent leaching wastewater is discharged into the leaching wastewater tank 5. The amount of high-concentration leaching wastewater collected can be determined by testing the ammonia nitrogen detector preset value, conductivity meter preset value, pH detector preset value, or preset time on the drainage main (wastewater main 13). During actual operation, this can be adjusted according to actual conditions. Since the amount of leaching wastewater generated is typically hundreds of times the amount of acid used, this measure can significantly reduce the amount of wastewater generated. The ammonia nitrogen concentration in the discharged leaching wastewater is very low.

[0118] 3. The saturated anion resin 7 is regenerated and washed with a dilute sodium hydroxide solution. The generated high-concentration waste alkali is discharged to the wastewater storage tank 2 through the anion valve 121 and the wastewater valve 141, and is neutralized with the previous high-concentration nitrogen-containing waste acid to neutrality.

[0119] 4. After the saturated anion resin 7 is alkaline washed, a large amount of deionized water is required for leaching. The leaching wastewater is still a high-concentration waste alkali in the first few minutes of discharge, so it continues to be discharged to the wastewater storage tank 2, and all subsequent leaching wastewater is discharged into the leaching wastewater tank 5. The collection amount of high-concentration leaching wastewater can be determined by detecting the preset value of the conductivity meter, the preset value of the pH detector or the preset time on the drainage main (wastewater main 13), and adjusted according to the actual situation during actual operation. Since the amount of leaching wastewater generated is usually hundreds of times the amount of alkali used, this move can greatly reduce the amount of wastewater generated. The discharged leaching wastewater is neutralized and diluted with the previous cationic bed leaching wastewater, and the resulting mixed wastewater can meet the discharge standards. Even if the ammonia nitrogen occasionally exceeds the standard, it can be quickly treated by the breakpoint chlorination method.

[0120] 5. The pH in wastewater storage tank 2 has been neutralized, and the primary pollutants are high-concentration ammonia nitrogen and the resulting malodorous waste gas. Furthermore, the high salt concentration produced by acid-base neutralization can reduce the efficiency of biochemical treatment. Therefore, this proposal incorporates an amphibious treatment system: A portion of the ammonia nitrogen is converted to ammonia gas using a gas-phase scrubbing oxidation process, undergoing aerobic ammonia oxidation in a low-salt system to convert it to nitrite nitrogen. The remaining portion of the ammonia nitrogen undergoes anaerobic ammonia oxidation with the nitrite nitrogen in a high-salt liquid phase system to convert it to nitrogen gas, achieving denitrification.

[0121] 6. Aeration is generated in wastewater storage tank 2, producing ammonia gas. This gas enters aerobic reactor 3, where it is absorbed and dissolved by atomized elution from circulating pump 34, and then comes into contact with the composite mineral filler composed of marine shells and multi-element volcanic rock filler in aerobic reactor 3. The multi-element volcanic rock filler provides trace mineral elements necessary for the growth of nitrifying bacteria, while the marine shells enhance the system's acid resistance and neutralization capabilities (nuclear power plants are typically built in coastal areas, where marine shells are readily and inexpensively available in large quantities). The entire reaction process is completed in a low-salinity environment, and the resulting nitrite solution accumulates at the bottom of the aerobic reactor tank.

[0122] 7. Subsequently, nitrite is quantitatively discharged into the anoxic reactor 4 through the pipette valve 41, and the ammonia nitrogen wastewater in the wastewater storage tank 2 is also quantitatively discharged into the anoxic reactor 4 through the pipette pump 42. The amount of ammonia nitrogen discharged each time is proportional to the amount of nitrate discharged into the aerobic reactor 3, which conforms to the stoichiometric formula of the anaerobic ammonium oxidation reaction.

[0123] 8. In order to speed up mass transfer and reaction rate, the water inlet pipe of the anoxic reaction tank is wrapped around the suction port of the agitator 43 and sprayed in all directions through the radioactive nozzle. After the agitator 43 is turned on, the sprayed water can be quickly pushed into the pool for reaction, seamlessly connecting and homogenizing. Multi-element volcanic rock powder is added to the anoxic reaction tank (the powder comes from the powder generated when processing, cutting and grinding multi-element volcanic rock fillers, which is usually disposed of as waste, and this device uses it as a resource). Anaerobic ammonia oxidation bacteria are attached to the powder, which can realize anaerobic ammonia oxidation reaction and convert ammonia nitrogen and nitrite nitrogen into nitrogen. The generated nitrogen is also discharged into the aerobic reactor 3 for treatment.

[0124] 9. Anaerobic ammonium oxidation reactions usually produce a small amount of nitrate nitrogen as a byproduct. Therefore, after the anaerobic ammonium oxidation reaction is completed, a denitrifying carbon source should be added through the water inlet pipe (drug inlet 44) to induce a short-range denitrification reaction in the tank, converting nitrate nitrogen into nitrite nitrogen.

[0125] 10. At this time, waste liquid is added to the anoxic reaction tank again. The amount of ammonia nitrogen added is proportional to the amount of residual nitrite in the anoxic reactor 4, which conforms to the stoichiometric formula of the anaerobic ammonium oxidation reaction.

[0126] 11. Repeat steps 7-10 until all wastewater is treated.

[0127] 12. This amphibious process significantly reduces wastewater volume and source water storage requirements through quality-based treatment. This allows for greater flexibility in subsequent treatment, allowing the treatment rate to be accelerated or slowed down based on actual wastewater generation, ensuring continuous, stable, and uninterrupted operation of the biochemical system.

[0128] The above description of the embodiments is intended to facilitate understanding and use of the invention by those skilled in the art. It will be apparent that those skilled in the art can readily make various modifications to these embodiments and apply the general principles described herein to other embodiments without requiring inventive effort. Therefore, the present invention is not limited to the above-described embodiments. Improvements and modifications made by those skilled in the art based on the disclosure of the present invention, without departing from the scope of the present invention, should be within the scope of protection of the present invention.

Claims

1. A system for efficiently treating regeneration wastewater by reducing its volume, characterized in that: It includes a wastewater delivery pipeline valve group (1), a wastewater storage tank (2), an aerobic reactor (3), an anoxic reactor (4) and a leaching wastewater tank (5); The wastewater delivery pipeline valve group (1) comprises a cation resin regeneration wastewater delivery pipe (11), an anion resin regeneration wastewater delivery pipe (12), a wastewater main pipe (13), a wastewater pipe (14) and a rinsing wastewater pipe (15); The cation resin regeneration wastewater delivery pipe (11) is connected to the saturated cation resin (6), the anion resin regeneration wastewater delivery pipe (12) is connected to the saturated anion resin (7), the wastewater pipe (14) is connected to the wastewater storage tank (2), and the leaching wastewater pipe (15) is connected to the leaching wastewater tank (5); The cation resin regeneration wastewater delivery pipe (11), the anion resin regeneration wastewater delivery pipe (12), the wastewater pipe (14) and the rinsing wastewater pipe (15) are all connected to the wastewater main pipe (13) and are provided with valves; The aerobic reactor (3) and the anoxic reactor (4) are both connected to the wastewater storage tank (2), and the aerobic reactor (3) is connected to the anoxic reactor (4).

2. The efficient treatment system for reducing the amount of regenerated waste liquid according to claim 1 is characterized in that: The cation resin regeneration wastewater delivery pipe (11) is provided with a yang valve (111), the anion resin regeneration wastewater delivery pipe (12) is provided with a yin valve (121), the wastewater pipe (14) is provided with a wastewater valve (141), and the rinsing wastewater pipe (15) is provided with a drain valve (151).

3. The efficient treatment system for reducing the amount of regeneration waste liquid according to claim 1 is characterized in that: The wastewater main pipe (13) is provided with an ammonia nitrogen detector, a conductivity meter, and a pH detector.

4. The efficient treatment system for reducing the amount of regeneration waste liquid according to claim 1 is characterized in that: The aerobic reactor (3) is provided with an aerobic filler (31), and the aerobic filler (31) is loaded with nitrifying bacteria; The wastewater storage tank (2) is provided with an air supply port (21) at the bottom, and is connected to the aerobic reactor (3) at the top.

5. The efficient treatment system for reducing the amount of regeneration waste liquid according to claim 4 is characterized in that: The bottom of the aerobic filler (31) is connected to the top of the wastewater storage tank (2), a water supply port (32) is provided below the aerobic filler (31), a leaching pipe (33) is provided above the aerobic filler (31), and the leaching pipe (33) is connected to the bottom of the aerobic filler (31) through a circulation pipe and a circulation pump (34); The aerobic filler (31) comprises a composite mineral filler composed of marine organism shells and multi-element volcanic rock fillers.

6. The efficient treatment system for reducing the amount of regeneration waste liquid according to claim 1 is characterized in that: The aerobic reactor (3) is arranged above the anoxic reactor (4), and the anoxic reactor (4) is connected to the bottom of the aerobic reactor (3) through a pipetting line and a pipetting valve (41).

7. The efficient treatment system for reducing the amount of regeneration waste liquid according to claim 1 is characterized in that: Multi-element volcanic rock powder is added into the anoxic reactor (4), and anaerobic ammonia-oxidizing bacteria are attached to the powder. The anoxic reactor (4) is connected to the bottom of the wastewater storage tank (2) through a pipetting line and a pipetting pump (42).

8. The efficient treatment system for reducing the amount of regeneration waste liquid according to claim 1 is characterized in that: The anoxic reactor (4) is provided with a stirrer (43); The anoxic reactor (4) is connected to a drug replenishing port (44) for adding a denitrification carbon source and a water outlet (45) for discharging water.

9. The high-efficiency treatment system for reducing the amount of regeneration waste liquid according to claim 1 is characterized in that: The saturated cation resin (6) and the saturated anion resin (7) are both components in the condensate polishing system; The saturated cationic resin (6) is provided with an acid inlet (61) and a first water inlet (62); The saturated anion resin (7) is provided with an alkali inlet (71) and a second water inlet (72).

10. A method for using the regeneration waste liquid reduction and efficient treatment system according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1: The high-concentration nitrogen-containing waste acid of the saturated cationic resin (6) is discharged into the wastewater storage tank (2), and then the leaching wastewater of the saturated cationic resin (6) is discharged into the leaching wastewater tank (5); S2: The high-concentration waste alkali of the saturated anion resin (7) is discharged into the wastewater storage tank (2), neutralized with the high-concentration nitrogen-containing waste acid to neutrality, and then the leaching wastewater of the saturated anion resin (7) is discharged into the leaching wastewater tank (5); S3: Blowing air into the wastewater storage tank (2) to generate ammonia gas which enters the aerobic reactor (3) for aerobic ammonia oxidation reaction and is converted into nitrite; S4: The nitrite in the aerobic reactor (3) and the ammonia nitrogen wastewater in the wastewater storage tank (2) enter the anoxic reactor (4) and undergo anaerobic ammonia oxidation reaction to convert into nitrogen gas.

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