Process and system for treating cartap synthesis process wastewater

Abstract

The invention discloses a cartap synthesis process wastewater treatment process and system, and belongs to the technical field of cartap synthesis. The invention relates to a cartap synthesis process wastewater treatment process and system, and the process comprises the following steps: 1, maintaining the pH value at 3-5, and maintaining the temperature at 25-30 DEG C; and 6, keeping the temperature at 30-35 DEG C to ensure that the microorganisms have enough time to decompose the organic matters, adding acid into the wastewater again, and keeping the pH value at 6.5-7.5. According to the cartap wastewater treatment method, the problem that the normal operation of wastewater treatment is affected due to the fact that the temperature in the wastewater cannot be adjusted synchronously in an existing cartap wastewater treatment method is solved, the temperature of the wastewater and the PH value in the wastewater are adjusted step by step, and when the PH value and the temperature are adjusted, the temperature of the wastewater is adjusted. A precipitant, a flocculating agent, a reactor, hydrogen peroxide, ferrous ions, an anaerobic bioreactor and an aerobic bioreactor are gradually added, and finally the treated sewage is finally adsorbed by activated carbon.

Description

Technical Field

[0001] The invention relates to the technical field of cartap synthesis, in particular to a treatment process and system for cartap synthesis process wastewater. Background Art

[0002] The wastewater treatment equipment and process in the synthesis process of cartap is to effectively remove harmful substances in the wastewater through a series of physical, chemical or biological processes, remove unreacted raw materials, by-products, solvents and possible heavy metal ions, etc., to ensure that the wastewater meets environmental protection standards and safety requirements before discharge. It usually includes a pretreatment unit, a main treatment unit and a post-treatment unit, aiming to achieve wastewater purification and resource utilization, reduce environmental pollution, and ensure the sustainable progress of production activities.

[0003] A Chinese patent with publication number CN113200649A discloses a novel method for treating wastewater from the cyanidation process of cartap. In the application, a three-stage aeration process (ozone-air-air) is used to achieve the purpose of ozone decomposition of ferrous ions, then stripping of dichloroethane, and finally biodegradation of residual dichloroethane, thereby achieving the effects of comprehensive treatment of cyanide ions, stripping recovery of dichloroethane, and microbial purification of iminodisuccinic acid and residual dichloroethane. The treatment efficiency is good and the discharge standard of industrial wastewater is met.

[0004] During the treatment process of the above patented method for treating wastewater with carbofuran, when adjusting the pH value in the sewage, the temperature in the sewage is not adjusted synchronously. The mismatch between temperature and pH value will reduce the chemical reaction rate in the sewage, inhibit the activity of anaerobic microorganisms used in sewage treatment, and affect the normal operation of wastewater treatment. Summary of the invention

[0005] The purpose of the present invention is to provide a treatment process and system for wastewater from a cartap synthesis process, which solves the problems raised in the above-mentioned background technology by gradually adjusting the temperature of the sewage and the pH value of the sewage, and gradually adding a precipitant, a flocculant, a reactor, hydrogen peroxide, ferrous ions, an anaerobic bioreactor, and an aerobic bioreactor when adjusting the pH value and the temperature, and finally subjecting the treated sewage to final adsorption by activated carbon.

[0006] To achieve the above object, the present invention provides the following technical solution: a process for treating wastewater from a cartap synthesis process, comprising the following steps:

[0007] Step 1: Add acid to the wastewater to adjust the pH value of the wastewater to a specific range, maintain the pH value between 3-5, and maintain the temperature between 25°C and 30°C;

[0008] Step 2: adding a precipitant to the wastewater to precipitate the ions in the wastewater and to precipitate the sulfate ions in the wastewater into calcium sulfate;

[0009] Step 3: Add flocculants to aggregate the fine suspended particles in the wastewater into larger flocs;

[0010] Step 4: The wastewater is passed through a reactor filled with iron and carbon micro-electrolysis materials. Iron and carbon form countless tiny primary cells in the wastewater, which undergo redox reactions and can effectively degrade some difficult-to-degrade organic matter in the wastewater.

[0011] Step 5, adding hydrogen peroxide and ferrous ions to the wastewater, wherein the ferrous ions catalyze the hydrogen peroxide to produce hydroxyl radicals;

[0012] Step 6: Introduce the wastewater into an anaerobic bioreactor, and use anaerobic microorganisms to decompose the organic matter in the wastewater into methane and carbon dioxide. It can treat high-concentration organic wastewater without aeration, with low energy consumption, and can also generate bioenergy. The temperature is maintained at 30°C to 35°C to ensure that the microorganisms have enough time to decompose the organic matter. Acid is added to the wastewater again, and the pH value is maintained between 6.5-7.5;

[0013] Step 7: In the aerobic bioreactor, aerobic microorganisms are used to further decompose the remaining organic matter in the wastewater and convert it into carbon dioxide and water, which can completely remove the organic matter in the wastewater and make the effluent water quality reach a higher standard.

[0014] Preferably, the precipitant in step 2 is a calcium salt. By adding the precipitant, a large amount of soluble solids in the wastewater can be effectively removed, reducing the load of subsequent treatment.

[0015] Preferably, the flocculant in step three is polyaluminium chloride. If the amount of polyaluminium chloride used is relatively small, a better flocculation effect can be achieved.

[0016] Preferably, the anaerobic microorganism in step six is ​​methanogens, which can treat high-concentration organic wastewater without the need for aeration and with low energy consumption.

[0017] Preferably, the aerobic microorganisms in step seven are microorganisms in activated sludge, and the microorganisms in activated sludge include bacteria, fungi, protozoa and metazoa.

[0018] Preferably, it also includes a wastewater treatment device consisting of a water tank and a filter box, the two filter boxes are respectively located at the front and rear ends of one side of the water tank, a three-way pipe is arranged between the filter box and the water tank, the two filter boxes can transmit and filter sewage at the same time, and during sewage treatment, one of the filter boxes can independently filter the sewage, and the other filter box can independently filter the sewage for a period of time, and the two filter boxes can cope with the filtering of graphene.

[0019] Preferably, a sealing sheet is provided in the middle of the upper end of the filter box, a bracket is welded to the lower end of the sealing sheet, fixing rings are welded to the upper and lower ends, one side and the front and rear ends of the bracket, a first filter screen is provided on one side of the fixing ring, and a second filter screen is provided on the other side of the fixing ring. The first filter screen and the second filter screen can be driven to be inserted into the filter box through the sealing sheet, and can be inserted into the filter box to face the sewage and filter the sewage.

[0020] Preferably, an extension piece is provided on the outside of the first filter screen, and the four corners of the extension piece are fixedly connected to the inside of the fixing ring by bolts. A sodium storage cavity is provided between the first filter screen and the second filter screen, and the extension piece can facilitate the fixation of the first filter screen, so that the first filter screen is fixed to the outside of the fixing ring.

[0021] Preferably, a first valve is provided on both sides of the filter box, and the closing of the first valve can stop the sewage from being transmitted to the filter box in the closed position, and the closing of the first valve can facilitate the replacement of graphene inside the filter box.

[0022] Preferably, a shunt pipe is provided on one side of the upper end and the other side of the lower end of the filter box. The shunt pipe and the filter box are sealed by a second valve. After the first valve is closed, the external liquid is transmitted from the shunt pipe to the filter box and reversely flushes the first filter screen.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. When treating sewage, the temperature of the sewage is divided into two sections. During the sewage treatment in one section, the sewage temperature is maintained at 25°C to 30°C. As the sewage is continuously treated, the sewage temperature rises and is maintained at 30°C to 35°C. Acid is added to the sewage when the temperature is between 25°C and 30°C and between 30°C and 35°C, so that the pH value is adjusted to between 3-5 and between 6.5-7.5, respectively. When adjusting the pH value and the corresponding temperature, the chemical reaction of the added sewage treatment material is avoided from being affected, thereby improving the efficiency of sewage treatment.

[0025] 2. When filtering sewage, the sewage will be diverted by the three-way pipe and flow toward the filter box respectively, and the two sides of the filter box can limit the flow of liquid by closing the first valve, and the graphene particles in the filter box can be replaced in the filter box at the restricted flow position. In the process of replacing the graphene, the graphene in the other filter box will temporarily receive a large amount of sewage for filtration. When replacing the graphene, the transmission and filtration of the sewage will not be affected. In addition, after the sewage is transmitted to the lower end of the sealing plate, after the sewage flows into the lower end of the sealing plate, it will be synchronously contacted and filtered by multiple directional fixing rings, which is convenient for replacing the graphene while improving the filtration efficiency of the sewage. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the external structure of the wastewater treatment device of the present invention;

[0027] Figure 2 An exploded view of the installation position of the sealing sheet of the present invention;

[0028] Figure 3 For the present invention Figure 2 A partial enlarged view of the middle A area;

[0029] Figure 4 It is a schematic diagram of the position where the liquid of the present invention flows out from the second filter screen;

[0030] Figure 5 It is an exploded diagram of the position relationship of the extension piece of the present invention;

[0031] Figure 6 It is a schematic diagram of the sewage filtration trajectory of the present invention;

[0032] Figure 7 For the present invention Figure 6 A partial enlarged view of the middle B area;

[0033] Figure 8 A schematic diagram of the flow trajectory in the shunt pipe of the present invention;

[0034] Fig. 9 The present invention is a flowchart of the treatment process of wastewater from the cartap synthesis process.

[0035] In the figure: 1. water tank; 2. three-way pipe; 3. first valve; 4. filter box; 5. diverter pipe; 6. second valve; 7. sealing plate; 8. bracket; 9. sealing strip; 10. connecting strip; 11. first filter screen; 12. second filter screen; 13. extension block; 14. fixing ring; 15. sodium storage chamber; 16. extension strip; 18. extension plate. DETAILED DESCRIPTION

[0036] The present invention is further described below in conjunction with specific embodiments.

[0037] Example 1

[0038] like Fig. 9 As shown, a process for treating wastewater from a cartap synthesis process of this embodiment comprises the following steps:

[0039] Step 1: Add acid to the wastewater to adjust the pH value of the wastewater to a specific range, maintain the pH value between 3-5, and maintain the temperature between 25°C and 30°C;

[0040] Adjusting the pH value and temperature of sewage is helpful for the subsequent treatment steps. Different pollutants will precipitate and hydrolyze at a specific pH value, and create suitable reaction conditions for subsequent chemical oxidation-reduction reactions. The temperature continues to rise slowly, which is convenient for subsequent sewage treatment and improves the efficiency of sewage treatment. It avoids the need to reserve sewage heating time separately and avoids the need to spend a lot of time on heating, which reduces the efficiency of sewage treatment.

[0041] Step 2: adding a precipitant to the wastewater treated in step 1 to precipitate the ions in the wastewater and to precipitate the sulfate ions in the wastewater into calcium sulfate;

[0042] Adding precipitants to sewage is simple to operate, low in cost, and can effectively remove a large amount of dissolved solids in wastewater, reducing the load of subsequent treatment;

[0043] The precipitant is a calcium salt;

[0044] Step 3: Add flocculants to aggregate the fine suspended particles in the wastewater into larger flocs;

[0045] Adding flocculants can remove tiny particles and colloids in wastewater and improve the clarity of wastewater;

[0046] The flocculant is polyaluminium chloride;

[0047] Step 4: The wastewater is passed through a reactor filled with iron and carbon micro-electrolysis materials. Iron and carbon form countless tiny primary cells in the wastewater, which undergo redox reactions and can effectively degrade some difficult-to-degrade organic matter in the wastewater.

[0048] The wastewater is transferred to the reactor of iron and carbon micro-electrolysis materials, which improves the biodegradability of the wastewater. At the same time, no external power supply is required, and the operating cost is relatively low;

[0049] Step 5, adding hydrogen peroxide and ferrous ions to the wastewater, wherein the ferrous ions catalyze the hydrogen peroxide to produce hydroxyl radicals;

[0050] Hydroxyl free radicals have strong oxidizing properties and can oxidize organic matter in wastewater. They have strong oxidizing ability for a variety of organic matter and can convert some difficult-to-biodegrade organic matter into biodegradable small molecule organic matter with a fast reaction speed.

[0051] Step 6: Introduce the wastewater into an anaerobic bioreactor, and use anaerobic microorganisms to decompose the organic matter in the wastewater into methane and carbon dioxide. It can treat high-concentration organic wastewater without aeration, with low energy consumption, and can also generate bioenergy. The temperature is maintained at 30°C to 35°C to ensure that the microorganisms have enough time to decompose the organic matter. Acid is added to the wastewater again, and the pH value is maintained between 6.5-7.5;

[0052] The bioenergy generated is methane. The methane gas generated during the wastewater treatment process can be collected and used as a bioenergy for power generation and heating, thus realizing the resource utilization of waste and reducing the treatment cost.

[0053] Most anaerobic microorganisms have the best activity and metabolic efficiency in the pH range of 6.5-7.5. This pH range can support the growth and reproduction of anaerobic microorganisms, ensuring that they effectively decompose organic matter in wastewater, and avoid the inhibition of anaerobic microbial activity when the pH value deviates from the optimal range, leading to the accumulation of volatile fatty acids, which in turn affects the normal operation of wastewater treatment;

[0054] The anaerobic microorganisms are methanogens;

[0055] Step 7: In an aerobic bioreactor, aerobic microorganisms are used to further decompose the remaining organic matter in the wastewater and convert it into carbon dioxide and water, which can completely remove the organic matter in the wastewater and make the effluent water quality reach a higher standard;

[0056] The treatment effect is stable and reliable. The microorganisms in aerobic microorganisms also participate in the nitrogen cycle in nature, converting ammonia nitrogen in sewage into nitrogen gas through nitrification and denitrification, thereby achieving denitrification;

[0057] Aerobic microorganisms are microorganisms in activated sludge. The microorganisms in activated sludge include bacteria, fungi, protozoa and metazoa. Among them, bacteria are the most important microbial component in activated sludge. They use organic matter in sewage as food, metabolize and reproduce, thereby reducing the content of organic matter in sewage. Fungi have an important influence on the structure and stability of activated sludge. The abnormal proliferation of filamentous fungi can cause activated sludge expansion and affect the sewage treatment effect. Protozoa control the number of bacteria by preying on bacteria, thereby maintaining the ecological balance of the activated sludge system. Metazoa refer to rotifers. Their appearance in activated sludge usually means that the water quality is very stable. The types and numbers of protozoa and metazoa can be used as indicators to judge the sewage treatment effect. Their presence or absence reflects the quality of water.

[0058] Step 8: Pass the wastewater through activated carbon adsorption to further improve the effluent quality so that the treated wastewater can meet more stringent discharge standards or reuse standards;

[0059] The porous structure of activated carbon can adsorb residual organic matter and pigments in wastewater, and can effectively remove trace organic matter, color and odor in wastewater.

[0060] Among them, Figure 1As shown, a wastewater treatment system for a cartap synthesis process includes a wastewater treatment device consisting of a water tank 1 and a filter box 4. The filter box 4 is located at the front and rear ends of one side of the water tank 1. When the sewage inside the water tank 1 is treated by the treatment process of the wastewater from the cartap synthesis process, when activated carbon adsorption is required in step eight, a three-way pipe 2 is provided between the filter box 4 and the water tank 1. By connecting the three-way pipe 2, the sewage inside the water tank 1 is diverted and transmitted between the two filter boxes 4.

[0061] A sealing sheet 7 is disposed in the middle of the upper end of the filter box 4, a bracket 8 is disposed at the lower end of the sealing sheet 7, and the bracket 8 is welded and fixed to the sealing sheet 7. Figure 2 As shown, after the sealing sheet 7 covers the upper end of the filter box 4, the sealing sheet 7 can drive the bracket 8 to be embedded in the filter box 4;

[0062] In addition, in order to improve the efficiency of sewage treatment, such as Figure 2 and Figure 4 As shown, the upper and lower ends, one side of the interior, and the front and rear ends of the interior of the bracket 8 are all provided with fixing rings 14, and the fixing ring 14 is welded and fixed to the bracket 8, a first filter screen 11 is provided on one side of the interior of the fixing ring 14, and a second filter screen 12 is provided on the other side of the interior of the fixing ring 14, and the first filter screen 11 and the second filter screen 12 are inserted into the filter box 4 together with the sealing sheet 7. When sewage flows into the filter box 4 from the three-way pipe 2, the sewage will flow into the lower end of the sealing sheet 7. After entering the lower end of the sealing sheet 7, the sewage will synchronously contact the first filter screen 11 and the second filter screen 12 in different directions;

[0063] When the sewage is filtered for a long time and at a high frequency, the activated carbon placed between the first filter screen 11 and the second filter screen 12 needs to be replaced. Figure 5 As shown, an extension piece 18 is extended from the outside of the first filter screen 11, and the four corners of the extension piece 18 are fixedly connected to the inside of the fixing ring 14 by bolts. After the bolts at the four corners are rotated and unscrewed, the extension piece 18 and the corresponding first filter screen 11 can be removed from the fixing ring 14, which is convenient for efficient disassembly and replacement of the activated carbon particles inside.

[0064] A sodium storage chamber 15 is provided between the first filter screen 11 and the second filter screen 12. The activated carbon is pre-stored in the sodium storage chamber 15 inside the fixed ring 14, so that the flowing sewage will actively flow toward the activated carbon inside the sodium storage chamber 15 during transmission, thereby filtering the sewage.

[0065] In order to facilitate sealing of the sealing sheet 7, as Figure 2 , Figure 4 , Figure 6 and Figure 7As shown, both sides of the lower end of the sealing sheet 7 are provided with extension blocks 13, and the upper end of the filter box 4 is recessed toward the position of the extension block 13 and provided with a sealing strip 9, and the extension block 13 is connected with the sealing strip 9 by a slot, and when the sealing sheet 7 slides longitudinally, the extension block 13 will be embedded in the sealing strip 9, and the embedding in the sealing strip 9 can achieve sealing, which is convenient for inserting, taking out and replacing the sealing sheet 7 and the bracket 8;

[0066] Among them, the front and rear ends of the other side of the bracket 8 are both provided with connecting strips 10, and the connecting strips 10 are welded and fixed to the bracket 8, such as Figure 2 and Figure 3 As shown, when the second valve 6 is inserted into the filter box 4, the outside of the connecting strip 10 is connected to the internal sliding groove of the filter box 4, and the sealing sheet 7 can be pulled through the connection between the filter box 4 and the groove of the connecting strip 10 to avoid the impact of sewage causing the position of the sealing sheet 7 to shift and the sealing failure;

[0067] In addition, the four corners of the upper end of the sealing sheet 7 are provided with extension strips 16, and the extension strips 16 are welded and fixed to the sealing sheet 7. Figure 1 and Figure 2 As shown, the interior of the extension strip 16 is fixedly connected to the interior of the filter box 4 by bolts, and the position of the sealing sheet 7 can be further fixed by inserting the bolts through the extension strip 16 into the interior of the filter box 4;

[0068] In order to replace the graphene particles in the sodium storage chamber 15 of the filter box 4 without stopping the discharge of sewage and stopping the sewage treatment, Figure 1 , Figure 6 and Figure 8 As shown, first valves 3 are provided on both sides of the filter box 4, and one of the first valves 3 of the filter box 4 is sealed and connected to the three-way pipe 2. After the first valve 3 is opened, the liquid inside the water tank 1 is transmitted to the first valve 3 through the three-way pipe 2 and then flows into the filter box 4 and contacts the installed activated carbon;

[0069] When replacing the activated carbon inside one of the filter boxes 4, the first valves 3 on both sides of the filter box 4 are closed to prevent the sewage from flowing in the filter box 4. When the liquid flow is stopped, the sealing sheet 7 can be disassembled and the activated carbon at the lower end of the sealing sheet 7 can be replaced.

[0070] Example 2

[0071] In order to facilitate the cleaning of the clogged first filter 11 and prevent large flake pollutants from continuously affecting the efficiency of sewage flowing into the first filter 11, a diverter pipe 5 is provided on one side of the upper end and the other side of the lower end of the filter box 4. The diverter pipe 5 and the filter box 4 are sealed by a second valve 6. When the sewage passes through the activated carbon at the lower end of the sealing sheet 7, the second valve 6 is in a closed state to prevent the sewage from flowing and being discharged from the diverter pipe 5 and causing liquid loss. After the first valve 3 is closed, the liquid transmission from the diverter pipe 5 can be reversed so that the liquid contacts the first filter 11 and the second filter 12, and the pollutants covering the surface of the first filter 11 can be actively discharged and cleaned.

[0072] Working principle: When sewage is treated in the water tank 1, a precipitant, a flocculant, a reactor, hydrogen peroxide and ferrous ions are successively added, and the sewage is successively transferred to the anaerobic bioreactor and the aerobic bioreactor, and then the sewage is finally transferred to the water tank 1. The sewage in the water tank 1 is diverted by the three-way pipe 2 and transferred to the filter box 4. The sewage will flow into the bracket 8 at the lower end of the sealing plate 7, and the sewage will pass through the first filter screen 11 and the second filter screen 12 inside the bracket 8. After the sewage passes through the sodium storage cavity 15 between the first filter screen 11 and the second filter screen 12, the graphene in the sodium storage cavity 15 will adsorb foreign matter on the flowing sewage. When replacing the graphene in the sodium storage cavity 15, the first valve 3 on both sides of the filter box 4 is rotated to limit the flow of the liquid, and the extension bar 16 passing through the inside is rotated. Bolt, longitudinally slide the sealing sheet 7, longitudinally slide and pull the sodium storage chamber 15 at the lower end to take it out from the inside of the filter box 4, rotate and take out the bolt from the extension sheet 18, remove the bolt and disassemble the first filter screen 11, replace the graphene particles inside the sodium storage chamber 15, and repeatedly insert the fixing ring 14 and the upper sealing sheet 7 into the filter box 4, and then pass the bolt through the extension strip 16 to complete the fixation of the sealing sheet 7. When reverse flushing the first filter screen 11, rotate and close the first valve 3, open the second valve 6 and transmit pure water to the upper shunt pipe 5. After the upper pure water is transmitted to the filter box 4, reverse flush the first filter screen 11 to remove foreign matter, so that the foreign matter is again transmitted and discharged by the lower shunt pipe 5. After cleaning, close the second valve 6 and open the first valve 3 again.

[0073] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or system.

[0074] While the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. A process for treating wastewater from a cartap synthesis process, characterized in that: The steps include: Step 1: Add acid to the wastewater to adjust the pH value of the wastewater to a specific range, maintain the pH value between 3-5, and maintain the temperature between 25°C and 30°C; Step 2: adding a precipitant to the wastewater to precipitate the ions in the wastewater and to precipitate the sulfate ions in the wastewater into calcium sulfate; Step 3: Add flocculants to aggregate the fine suspended particles in the wastewater into larger flocs; Step 4: The wastewater is passed through a reactor filled with iron and carbon micro-electrolysis materials. The iron and carbon form countless tiny primary cells in the wastewater, and redox reactions occur. Step 5, adding hydrogen peroxide and ferrous ions to the wastewater, wherein the ferrous ions catalyze the hydrogen peroxide to produce hydroxyl radicals; Step 6: Introduce the wastewater into an anaerobic bioreactor, use anaerobic microorganisms to decompose the organic matter in the wastewater into methane and carbon dioxide, treat high-concentration organic wastewater, keep the temperature at 30°C to 35°C, ensure that the microorganisms have enough time to decompose the organic matter, add acid to the wastewater again, and maintain the pH value between 6.5-7.5; Step 7: In an aerobic bioreactor, aerobic microorganisms are used to decompose the remaining organic matter in the wastewater and convert it into carbon dioxide and water.

2. The process for treating wastewater from cartap synthesis process according to claim 1, characterized in that: The precipitant in step 2 is a calcium salt.

3. The process for treating wastewater from cartap synthesis process according to claim 1, characterized in that: The flocculant in step three is polyaluminium chloride.

4. The process for treating wastewater from cartap synthesis process according to claim 1, characterized in that: The anaerobic microorganism in step six is ​​methanogens.

5. The process for treating wastewater from cartap synthesis process according to claim 1, characterized in that: The aerobic microorganisms in step seven are microorganisms in activated sludge, and the microorganisms in activated sludge include bacteria, fungi, protozoa and metazoa.

6. A cartap synthesis process wastewater treatment system, used to implement the cartap synthesis process wastewater treatment process according to any one of claims 1 to 5, characterized in that: The invention comprises a wastewater treatment device consisting of a water tank (1) and a filter box (4), wherein the two filter boxes (4) are respectively located at the front and rear ends of one side of the water tank (1), and a three-way pipe (2) is arranged between the filter box (4) and the water tank (1).

7. The wastewater treatment system for cartap synthesis process according to claim 6, characterized in that: A sealing sheet (7) is provided in the middle of the upper end of the filter box (4), a bracket (8) is welded to the lower end of the sealing sheet (7), a fixing ring (14) is welded to the upper and lower ends, one side of the inside and the front and rear ends of the inside of the bracket (8), a first filter screen (11) is provided on one side of the inside of the fixing ring (14), and a second filter screen (12) is provided on the other side of the inside of the fixing ring (14).

8. The wastewater treatment system for cartap synthesis process according to claim 7, characterized in that: An extension piece (18) is provided on the outside of the first filter screen (11), and the four corners of the extension piece (18) are fixedly connected to the inside of the fixing ring (14) by bolts. A sodium storage chamber (15) is provided between the first filter screen (11) and the second filter screen (12).

9. The wastewater treatment system for cartap synthesis process according to claim 7, characterized in that: First valves (3) are provided on both sides of the filter box (4).

10. The wastewater treatment system for cartap synthesis process according to claim 6, characterized in that: A shunt pipe (5) is provided on one side of the upper end and the other side of the lower end of the filter box (4), and the shunt pipe (5) and the filter box (4) are sealedly connected via a second valve (6).

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