Electrolyte-containing high-phosphorus and high-fluorine spraying wastewater treatment system

Abstract

The utility model provides an electrolyte-containing high-phosphorus and high-fluorine spraying wastewater treatment system. The system comprises a water inlet device, a decarburization reaction device, a hydrolytic acidification device and a coagulating sedimentation device. The water inlet end of the water inlet device is communicated with a wastewater source. The decarburization reaction device comprises a decarburization reaction tank and an acid source assembly, the water inlet end of the decarburization reaction tank is communicated with the water outlet end of the water inlet device, and the liquid outlet end of the acid source assembly is communicated with the liquid adding end of the decarburization reaction tank. The hydrolytic acidification device comprises a hydrolytic acidification reaction tank and a steam heating conveying pipeline, the water inlet end of the hydrolytic acidification reaction tank is communicated with the water outlet end of the decarburization reaction tank, one end of the steam conveying pipeline is communicated with a steam source, and the other end of the steam conveying pipeline extends into the hydrolytic acidification reaction tank. The water inlet end of the coagulating sedimentation device is communicated with the water outlet end of the hydrolytic acidification reaction tank.

Description

Technical Field

[0001] The present disclosure relates to the field of lithium battery recycling wastewater treatment, and in particular to a system for treating electrolyte-containing high-phosphorus and high-fluorine spray wastewater. Background Art

[0002] The exhaust gas generated during the crushing process of lithium batteries enters the exhaust gas treatment system for spraying. A large amount of spray wastewater is generated during the spraying process. The wastewater has the characteristics of high carbonate content, high bicarbonate content, high total phosphorus content, high fluorine content (mainly organic fluorine) and difficult to remove. This type of production wastewater must be treated before it can be discharged in compliance with the standards.

[0003] However, the treatment method for this type of wastewater is to first convert organic fluorine into inorganic fluorine through advanced oxidation, and then add calcium hydroxide for coagulation and precipitation. However, the operating cost of advanced oxidation is relatively high, such as photocatalytic oxidation, electrocatalytic oxidation and Fenton oxidation, and the presence of high content of carbonate and high content of bicarbonate in the wastewater will consume a large amount of reagents. Specifically, carbonate and bicarbonate will compete with inorganic fluorine for calcium ions, resulting in huge consumption of calcium hydroxide reagents during the coagulation process, which in turn leads to high cost of wastewater treatment. Utility Model Content

[0004] The purpose of the present invention is to overcome the shortcomings of the existing technology and provide an electrolyte-containing high-phosphorus and high-fluorine spray wastewater treatment system that can reduce wastewater treatment costs while ensuring better wastewater treatment effects.

[0005] The purpose of this disclosure is achieved through the following technical solutions:

[0006] A system for treating electrolyte-containing high-phosphorus and high-fluorine spray wastewater, comprising:

[0007] A water inlet device, wherein the water inlet end of the water inlet device is connected to the wastewater source;

[0008] A decarbonization reaction device, comprising a decarbonization reaction tank and an acid source assembly, wherein the water inlet of the decarbonization reaction tank is connected to the water outlet of the water inlet device, and the liquid outlet of the acid source assembly is connected to the liquid feeding end of the decarbonization reaction tank;

[0009] A hydrolysis and acidification device, comprising a hydrolysis and acidification reaction tank and a steam delivery pipeline, wherein a water inlet end of the hydrolysis and acidification reaction tank is connected to a water outlet end of the decarbonization reaction tank, one end of the steam delivery pipeline is connected to a steam source, and the other end of the steam delivery pipeline extends into the hydrolysis and acidification reaction tank;

[0010] A coagulation and sedimentation device, wherein the water inlet end of the coagulation and sedimentation device is connected to the water outlet end of the hydrolysis and acidification reaction tank.

[0011] In one embodiment, the water inlet device includes a homogenization adjustment tank and a first water outlet pump, the water inlet end of the homogenization adjustment tank is connected to the wastewater source, the water outlet end of the homogenization adjustment tank is connected to the water inlet end of the decarbonization reaction tank, and the first water outlet pump is arranged on the pipeline connecting the homogenization adjustment tank and the decarbonization reaction tank.

[0012] In one embodiment, the decarbonization reaction device further includes a decarbonization water outlet tank and a second water outlet pump, the water inlet end of the decarbonization water outlet tank is connected to the water outlet end of the decarbonization reaction tank, the water outlet end of the decarbonization water outlet tank is connected to the water inlet end of the hydrolysis acidification reaction tank, and the second water outlet pump is arranged on the pipeline connecting the decarbonization water outlet tank and the hydrolysis acidification reaction tank.

[0013] In one embodiment, the acid source assembly includes an acid storage tank and a first liquid outlet pump, the liquid outlet end of the acid storage tank is connected to the liquid feeding end of the decarbonization reaction tank, and the first liquid outlet pump is arranged on the pipeline connecting the acid storage tank and the decarbonization reaction tank.

[0014] In one embodiment, the coagulation and sedimentation device includes a coagulation reaction tank, a vertical flow sedimentation tank and a sedimentation water outlet tank. The water inlet end of the coagulation reaction tank is connected to the water outlet end of the hydrolysis acidification reaction tank, the water outlet end of the coagulation reaction tank is connected to the water inlet end of the vertical flow sedimentation tank, and the water outlet end of the vertical flow sedimentation tank is connected to the water inlet end of the sedimentation water outlet tank.

[0015] In one embodiment, the coagulation and sedimentation device also includes a coagulation and sedimentation integrated device and a third water outlet pump. The coagulation and sedimentation integrated device is formed with a coagulation reaction tank, a flocculation reaction tank, an inclined plate sedimentation tank and a sedimentation outlet tank that are sequentially connected along the water inlet direction. The water inlet end of the coagulation reaction tank is connected to the water outlet end of the sedimentation outlet tank, and the third water outlet pump is arranged on the pipeline connecting the coagulation reaction tank and the sedimentation outlet tank.

[0016] In one embodiment, the coagulation and sedimentation device also includes an integrated water outlet tank and a fourth water outlet pump. The water inlet end of the integrated water outlet tank is connected to the water outlet end of the sedimentation water outlet tank. The fourth water outlet pump is arranged on the pipeline connecting the integrated water outlet tank and the sedimentation water outlet tank.

[0017] In one embodiment, the wastewater treatment system also includes a resin mixed bed device, which includes a resin mixed bed tank, a bag filter and a fifth water outlet pump. The water inlet end of the resin mixed bed tank is connected to the water outlet end of the integrated water outlet tank. The bag filter and the fifth water outlet pump are both arranged on the pipeline connecting the resin mixed bed tank and the integrated water outlet tank.

[0018] In one embodiment, the resin mixed bed device also includes a resin mixed bed water outlet tank, an alkali storage tank and a second liquid outlet pump, the water inlet end of the resin mixed bed water outlet tank is connected to the water outlet end of the resin mixed bed tank, the liquid outlet end of the alkali storage tank is connected to the liquid adding end of the resin mixed bed water outlet tank, and the second liquid outlet pump is arranged on the pipeline connecting the alkali storage tank and the resin mixed bed water outlet tank.

[0019] In one embodiment, the wastewater treatment system also includes a water outlet device, which includes a water outlet pipe and a sixth water outlet pump. The water inlet end of the water outlet pipe is connected to the water outlet end of the resin mixed bed water outlet tank, and the water outlet end of the water outlet pipe is respectively connected to the wastewater discharge pipe and the water inlet end of the homogenization adjustment tank. The sixth water outlet pump is arranged on the water outlet pipe.

[0020] In one embodiment, the resin mixed bed device further includes a pure water storage tank, a third liquid outlet pump, an acid regeneration liquid storage tank, a fourth liquid outlet pump, an alkali regeneration liquid storage tank, a fifth liquid outlet pump, a regeneration waste liquid tank and a sixth liquid outlet pump, the liquid outlet end of the pure water storage tank is connected to the first liquid feeding end of the resin mixed bed tank, the third liquid outlet pump is arranged on the pipeline connecting the pure water storage tank and the resin mixed bed tank, the liquid outlet end of the acid regeneration liquid storage tank is connected to the second liquid feeding end of the resin mixed bed tank, and the fourth liquid outlet pump is arranged on the acid regeneration liquid The storage tank is connected to the resin mixed bed tank by a pipe, the liquid outlet end of the alkali regeneration liquid storage tank is connected to the third liquid feeding end of the resin mixed bed tank, the fifth liquid outlet pump is arranged on the pipe connecting the alkali regeneration liquid storage tank and the resin mixed bed tank, the liquid inlet end of the regeneration waste liquid tank is respectively connected to the first liquid discharge end and the second liquid discharge end of the resin mixed bed tank, the liquid outlet end of the regeneration waste liquid tank is connected to the water inlet end of the coagulation reaction tank, and the sixth liquid outlet pump is arranged on the pipe connecting the regeneration waste liquid tank and the coagulation reaction tank.

[0021] Compared with the prior art, the present disclosure has at least the following advantages:

[0022] The wastewater is transported to the decarbonization reaction tank by the water inlet device, and dilute sulfuric acid is added to the decarbonization reaction tank through the acid source component, so that the dilute sulfuric acid reacts with the carbonate and bicarbonate in the wastewater respectively, and the carbonate and bicarbonate in the wastewater are effectively removed. The wastewater is then transported to the hydrolysis and acidification reaction tank, and steam is transported to the hydrolysis and acidification reaction tank through the steam transmission pipeline to heat the wastewater. The wastewater is acidic after passing through the decarbonization reaction tank, so that the organic fluorine in the wastewater is hydrolyzed and acidified into inorganic fluorine. The wastewater is then transported to the coagulation and sedimentation device. By adding PAM solution and calcium hydroxide agent into the coagulation and sedimentation device, the inorganic fluorine and phosphorus in the wastewater can be effectively removed, so that the electrolyte-containing high-phosphorus and high-fluorine spray wastewater treatment system has a better wastewater effect while reducing the consumption of calcium hydroxide agent, thereby greatly reducing the wastewater treatment cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present disclosure and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 This is a schematic structural diagram of a system for treating high-phosphorus and high-fluorine electrolyte spray wastewater in one embodiment;

[0025] Figure 2 for Figure 1 The schematic diagram of the structure of the water inlet device and the decarbonization reaction device of the electrolyte high-phosphorus and high-fluorine spray wastewater treatment system shown;

[0026] Figure 3 for Figure 1 The schematic diagram of the structure of the hydrolysis acidification device and the coagulation sedimentation device of the electrolyte-containing high-phosphorus and high-fluorine spray wastewater treatment system is shown;

[0027] Figure 4 for Figure 1 The schematic diagram of the structure of the coagulation and sedimentation device of the electrolyte-containing high-phosphorus and high-fluorine spray wastewater treatment system is shown;

[0028] Figure 5 for Figure 1 The schematic diagram of the structure of the resin mixed bed device and the water outlet device of the electrolyte high-phosphorus and high-fluorine spray wastewater treatment system shown;

[0029] Reference numerals: electrolyte-containing high-phosphorus and high-fluorine spray wastewater treatment system 10;

[0030] Water inlet device 100; homogenization regulating tank 110; first water outlet pump 120;

[0031] Decarbonization reaction device 200; decarbonization reaction tank 210; acid source assembly 220; acid storage tank 2210; first liquid outlet pump 2220; decarbonization water outlet tank 230; second water outlet pump 240;

[0032] Hydrolysis and acidification device 300; hydrolysis and acidification reaction tank 310; steam delivery pipeline 320;

[0033] Coagulation and sedimentation device 400; coagulation reaction tank 410; vertical flow sedimentation tank 420; sedimentation outlet tank 430; coagulation and sedimentation integrated device 440; coagulation reaction tank 4410; flocculation reaction tank 4420; inclined plate sedimentation tank 4430; sedimentation outlet tank 4440; third outlet pump 450; integrated outlet tank 460; fourth outlet pump 470;

[0034] Resin mixed bed device 500; resin mixed bed tank 510; bag filter 520; fifth outlet pump 530; resin mixed bed outlet tank 540; alkali storage tank 550; second outlet pump 560; pure water storage tank 570; third outlet pump 580; acid regeneration liquid storage tank 590; fourth outlet pump 5100; alkali regeneration liquid storage tank 5110; fifth outlet pump 5120; regeneration waste liquid tank 5130; sixth outlet pump 5140;

[0035] Water outlet device 600; water outlet pipe 610; sixth water outlet pump 620. DETAILED DESCRIPTION

[0036] To facilitate understanding of the present disclosure, a more comprehensive description of the present disclosure will be provided below with reference to the accompanying drawings. The accompanying drawings illustrate preferred embodiments of the present disclosure. However, the present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the disclosure.

[0037] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly attached to the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this disclosure pertains. The terms used herein in the specification of this disclosure are intended only to describe specific embodiments and are not intended to limit this disclosure. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0039] See also Figures 1 to 5 In order to better understand the electrolyte-containing high-phosphorus and high-fluorine spray wastewater treatment system 10 disclosed herein, the electrolyte-containing high-phosphorus and high-fluorine spray wastewater treatment system 10 is further explained below:

[0040] A system 10 for treating high-phosphorus, high-fluorine electrolyte spray wastewater, according to one embodiment, includes a water inlet 100, a decarbonization reaction unit 200, a hydrolysis and acidification unit 300, and a coagulation and sedimentation unit 400. The water inlet of the water inlet 100 is connected to a wastewater source. The decarbonization reaction unit 200 includes a decarbonization reaction tank 210 and an acid source assembly 220. The water inlet of the decarbonization reaction tank 210 is connected to the water outlet of the water inlet 100, and the liquid outlet of the acid source assembly 220 is connected to the liquid feeding end of the decarbonization reaction tank 210. The hydrolysis and acidification unit 300 includes a hydrolysis and acidification reaction tank 310 and a steam delivery pipeline 320. The water inlet of the hydrolysis and acidification reaction tank 310 is connected to the water outlet of the decarbonization reaction tank 210. One end of the steam delivery pipeline 320 is connected to a steam source, and the other end of the steam delivery pipeline 320 extends into the hydrolysis and acidification reaction tank 310. The water inlet of the coagulation and sedimentation device 400 is connected to the water outlet of the hydrolysis and acidification reaction tank 310 .

[0041] In this embodiment, wastewater is transported to the decarbonization reaction tank 210 by the water inlet device 100, and dilute sulfuric acid is added to the decarbonization reaction tank 210 through the acid source component 220, so that the dilute sulfuric acid reacts with the carbonate and bicarbonate in the wastewater respectively, effectively removing the carbonate and bicarbonate in the wastewater. The wastewater is then transported to the hydrolysis and acidification reaction tank 310, and steam is transported to the hydrolysis and acidification reaction tank 310 through the steam transmission pipe 320 to heat the wastewater. After passing through the decarbonization reaction tank 210, the wastewater is acidic, so that the organic fluorine in the wastewater is hydrolyzed and acidified into inorganic fluorine. The wastewater is then transported to the coagulation and sedimentation device 400. By adding PAM solution and calcium hydroxide reagent into the coagulation and sedimentation device 400, the inorganic fluorine and phosphorus in the wastewater can be effectively removed, so that the electrolyte-containing high-phosphorus and high-fluorine spray wastewater treatment system 10 has a better wastewater treatment effect while reducing the consumption of calcium hydroxide reagent, thereby greatly reducing the wastewater treatment cost.

[0042] It should be noted that the dilute sulfuric acid input amount of the acid source component 220 and the steam input amount and temperature are adjusted according to the actual wastewater treatment needs, so that the wastewater reaches the hydrolysis and acidification reaction temperature and pH value in the hydrolysis and acidification reaction tank 310, thereby ensuring that the wastewater can convert organic fluorine into inorganic fluorine in the hydrolysis and acidification reaction tank 310, creating conditions for the subsequent coagulation and sedimentation process.

[0043] It should be noted that the reaction temperature of hydrolysis and acidification is 80°C to 90°C, and the pH value of hydrolysis and acidification should be less than or equal to 3.5. The decarbonization reaction tank 210 is equipped with a vertical mixer, which can accelerate the decarbonization reaction of the wastewater in the decarbonization reaction tank 210, so that the carbonate and bicarbonate in the wastewater can be fully reacted to form carbon dioxide, and the carbon dioxide is discharged from the exhaust gas outlet of the decarbonization reaction tank 210 to the exhaust gas treatment device for exhaust gas emission treatment.

[0044] like Figure 2 As shown, in one embodiment, the water inlet device 100 includes a homogenization adjustment tank 110 and a first water outlet pump 120. The water inlet end of the homogenization adjustment tank 110 is connected to the wastewater source, and the water outlet end of the homogenization adjustment tank 110 is connected to the water inlet end of the decarbonization reaction tank 210. The first water outlet pump 120 is arranged on the pipeline connecting the homogenization adjustment tank 110 and the decarbonization reaction tank 210. It can be understood that the electrolyte-containing high-phosphorus and high-fluorine spray wastewater is first transported to the homogenization adjustment tank 110 for homogenization treatment to uniformly disperse the pollutants in the wastewater, facilitating wastewater treatment. Then, the first water outlet pump 120 is turned on to transport the wastewater from the homogenization adjustment tank 110 to the decarbonization reaction tank 210 for decarbonization treatment, thereby effectively removing carbonate and bicarbonate from the wastewater, avoiding the situation where inorganic fluorine, carbonate and bicarbonate compete for calcium ions, greatly saving the consumption of calcium hydroxide reagents, and thus effectively reducing the cost of wastewater treatment.

[0045] like Figure 2 As shown, in one embodiment, the decarbonization reaction device 200 further includes a decarbonization water outlet tank 230 and a second water outlet pump 240. The water inlet of the decarbonization water outlet tank 230 is connected to the water outlet of the decarbonization reaction tank 210, and the water outlet of the decarbonization water outlet tank 230 is connected to the water inlet of the hydrolysis acidification reaction tank 310. The second water outlet pump 240 is disposed on a pipeline connecting the decarbonization water outlet tank 230 and the hydrolysis acidification reaction tank 310. It is understood that the wastewater treated in the decarbonization reaction tank 210 is stored in the decarbonization water outlet tank 230, and then the second water outlet pump 240 is turned on to transport the wastewater from the decarbonization water outlet tank 230 to the hydrolysis acidification reaction tank 310 for hydrolysis acidification treatment.

[0046] like Figure 2 As shown, in one embodiment, the acid source assembly 220 includes an acid storage tank 2210 and a first liquid outlet pump 2220. The liquid outlet end of the acid storage tank 2210 is connected to the liquid feeding end of the decarbonization reaction tank 210, and the first liquid outlet pump 2220 is disposed on a pipeline connecting the acid storage tank 2210 and the decarbonization reaction tank 210. It is understood that by adjusting the liquid flow rate of the first liquid outlet pump 2220 to control the addition of dilute sulfuric acid, it is ensured that carbonate and bicarbonate in the wastewater can be removed while making the wastewater acidic. This allows the wastewater to undergo hydrolysis and acidification reaction after being transported to the hydrolysis and acidification tank without the need for additional acid addition, thereby simplifying the process and reducing wastewater treatment costs.

[0047] like Figure 3As shown, in one embodiment, the coagulation and sedimentation device 400 includes a coagulation reaction tank 410, a vertical flow sedimentation tank 420 and a sedimentation water outlet tank 430, the water inlet end of the coagulation reaction tank 410 is connected to the water outlet end of the hydrolysis acidification reaction tank 310, the water outlet end of the coagulation reaction tank 410 is connected to the water inlet end of the vertical flow sedimentation tank 420, and the water outlet end of the vertical flow sedimentation tank 420 is connected to the water inlet end of the sedimentation water outlet tank 430. It can be understood that after hydrolysis and acidification treatment, the wastewater is transported to the coagulation reaction tank 410, and an anionic polyacrylamide solution (PAM solution) with a mass fraction of 0.1% to 0.3% and a calcium hydroxide with a mass concentration of 10% are added to the coagulation reaction tank 410. At the same time, the coagulation reaction tank 410 is equipped with a vertical mixer to stir the wastewater at a uniform speed. On the one hand, it can further remove the remaining carbonates and bicarbonates at the front end, and on the other hand, it can remove inorganic fluorine and phosphate in the wastewater, thereby effectively reducing the fluoride content and total phosphorus content in the wastewater. After coagulation, the wastewater is transported to the vertical flow sedimentation tank 420 for precipitation reaction. The sludge is discharged from the bottom of the vertical flow sedimentation tank 420 to the filter press for filtration. The filtrate can be returned to the coagulation reaction tank 410, and the sludge is transported out for disposal. The wastewater is then discharged from the vertical flow sedimentation tank 420 to the sedimentation water tank 430. In this way, the electrolyte-containing high-phosphorus and high-fluorine spray wastewater treatment system 10 has a better wastewater treatment effect.

[0048] like Figure 1 、 Figure 3 and Figure 4As shown, in one embodiment, the coagulation and sedimentation device 400 also includes a coagulation and sedimentation integrated device 440 and a third water outlet pump 450. The coagulation and sedimentation integrated device 440 is formed with a coagulation reaction tank 4410, a flocculation reaction tank 4420, an inclined plate sedimentation tank 4430 and a sedimentation outlet tank 4440 that are sequentially connected along the water inlet direction. The water inlet end of the coagulation reaction tank 4410 is connected to the water outlet end of the sedimentation outlet tank 430, and the third water outlet pump 450 is arranged on the pipeline connecting the coagulation reaction tank 4410 and the sedimentation outlet tank 430. It should be noted that, due to the high fluorine and phosphorus content in the electrolyte-containing high-phosphorus and high-fluorine spray wastewater, it is difficult for one coagulation sedimentation to meet the wastewater discharge standard. The third outlet pump 450 is turned on to transport the wastewater in the sedimentation outlet tank 430 to the coagulation reaction tank 4410 in the coagulation sedimentation integrated device 440. The sedimentation outlet tank 430 is equipped with a vertical mixer, which can homogenize the wastewater before transportation to ensure that the pollutants in the wastewater are evenly dispersed. The wastewater after homogenization is transported to the coagulation reaction tank 4410, and calcium chloride with a mass concentration of 30% is added to the coagulation reaction tank 4410. The vertical mixer in the coagulation reaction tank 4410 is started to stir the wastewater at a uniform speed. The wastewater after coagulation treatment flows from the coagulation reaction tank 4410 to the flocculation reaction tank 4410. In the flocculation tank 4420, an anionic polyacrylamide solution with a mass fraction of 0.1% to 0.3% is added to the flocculation reaction tank 4420, and the vertical mixer in the flocculation reaction tank 4420 is started to stir the wastewater at a uniform speed; the wastewater after flocculation treatment overflows from the flocculation reaction tank 4420 to the inclined plate sedimentation tank 4430 for sedimentation treatment, and the sludge is discharged from the bottom of the inclined plate sedimentation tank 4430 to the filter press for filtration, and the filtrate is returned to the coagulation reaction tank 4410 for further treatment, and the sludge is transported out for disposal; the wastewater after sedimentation treatment overflows from the inclined plate sedimentation tank 4430 to the sedimentation outlet tank 4440, thereby completing the secondary fluorine and phosphorus removal treatment of the wastewater, and further improving the wastewater treatment effect of the electrolyte-containing high-phosphorus and high-fluorine spray wastewater treatment system 10.

[0049] like Figure 4 As shown, in one embodiment, the coagulation and sedimentation device 400 further includes an integrated water outlet tank 460 and a fourth water outlet pump 470. The water inlet of the integrated water outlet tank 460 is connected to the water outlet of the sedimentation outlet tank 4440. The fourth water outlet pump 470 is disposed on a pipeline connecting the integrated water outlet tank 460 and the sedimentation outlet tank 4440. It is understood that when the fourth water outlet pump 470 is turned on, the wastewater after the secondary coagulation and sedimentation treatment is transported from the sedimentation outlet tank 4440 to the integrated water outlet tank 460 for storage.

[0050] like Figure 1 、 Figure 4 and Figure 5As shown, in one embodiment, the wastewater treatment system also includes a resin mixed bed device 500, which includes a resin mixed bed tank 510, a bag filter 520 and a fifth water outlet pump 530. The water inlet end of the resin mixed bed tank 510 is connected to the water outlet end of the integrated water outlet tank 460, and the bag filter 520 and the fifth water outlet pump 530 are both arranged on the pipeline connecting the resin mixed bed tank 510 and the integrated water outlet tank 460. It should be noted that in order to further remove fluorine and phosphorus in the wastewater and ensure that the water quality after wastewater treatment meets the standards, the wastewater in the integrated water outlet tank 460 is first adjusted to a pH value by adding acid or alkali to control the pH value of the wastewater between 3.5 and 4.5. The fifth water outlet pump 530 is turned on to transport the wastewater in the integrated water outlet tank 460 to the resin mixed bed tank 510. During the transportation process, the wastewater passes through the bag filter 520, and the filtration gap of the bag filter 520 is 5μm, which can remove suspended matter in the wastewater. Large-pore weak acid cation exchange resin is added to the resin mixed bed tank 510, which can effectively adsorb waste inorganic fluorine and inorganic phosphorus in the wastewater, further improving the wastewater treatment effect of the electrolyte-containing high-phosphorus and high-fluorine spray wastewater treatment system 10.

[0051] like Figure 5 As shown, in one embodiment, the resin mixed bed device 500 further includes a resin mixed bed water outlet tank 540, an alkali storage tank 550, and a second liquid outlet pump 560. The water inlet of the resin mixed bed water outlet tank 540 is connected to the water outlet of the resin mixed bed tank 510, the liquid outlet of the alkali storage tank 550 is connected to the liquid feeding end of the resin mixed bed water outlet tank 540, and the second liquid outlet pump 560 is disposed on a pipeline connecting the alkali storage tank 550 and the resin mixed bed water outlet tank 540. It is understood that the wastewater treated in the resin mixed bed tank 510 is transported to the resin mixed bed water outlet tank 540, and then the second liquid outlet pump 560 is turned on to transport alkali solution through the alkali storage tank 550 to the resin mixed bed water outlet tank 540 to adjust the pH of the wastewater so that the pH of the wastewater meets the discharge standard.

[0052] It should be noted that a water inlet valve is provided on the pipe connecting the resin mixed bed tank 510 and the resin mixed bed water outlet tank 540 , and the water outlet switch of the resin mixed bed tank 510 is controlled by the water inlet valve.

[0053] like Figure 1 and Figure 5As shown, in one embodiment, the wastewater treatment system further includes a water outlet device 600, which includes a water outlet pipe 610 and a sixth water outlet pump 620. The water inlet end of the water outlet pipe 610 is connected to the water outlet end of the resin mixed bed water outlet tank 540, and the water outlet end of the water outlet pipe 610 is respectively connected to the wastewater discharge pipe and the water inlet end of the homogenization adjustment tank 110. The sixth water outlet pump 620 is disposed on the water outlet pipe 610. It is understood that if the wastewater in the resin mixed bed water outlet tank 540 meets the discharge standards, the sixth water outlet pump 620 is turned on to discharge the wastewater from the water outlet pipe 610 to the wastewater discharge pipe. If the wastewater in the resin mixed bed water outlet tank 540 does not meet the discharge standards, the sixth water outlet pump 620 is turned on to discharge the wastewater from the water outlet pipe 610 to the homogenization adjustment tank 110 for circulation treatment to ensure that the wastewater quality meets the standards.

[0054] It should be noted that the pipe connecting the outlet pipe 610 and the homogenization adjustment tank 110 is also provided with a wastewater return valve, and the wastewater discharge pipe is provided with a wastewater discharge valve. The outlet direction of the wastewater is adjusted by controlling the switching of the wastewater return valve and the wastewater discharge valve.

[0055] like Figure 5 As shown, in one embodiment, the resin mixed bed device 500 further includes a pure water storage tank 570, a third liquid outlet pump 580, an acid regeneration liquid storage tank 590, a fourth liquid outlet pump 5100, an alkali regeneration liquid storage tank 5110, a fifth liquid outlet pump 5120, a regeneration waste liquid tank 5130 and a sixth liquid outlet pump 5140. The liquid outlet end of the pure water storage tank 570 is connected to the first liquid feeding end of the resin mixed bed tank 510. The third liquid outlet pump 580 is arranged on the pipeline connecting the pure water storage tank 570 and the resin mixed bed tank 510. The liquid outlet end of the acid regeneration liquid storage tank 590 is connected to the second liquid feeding end of the resin mixed bed tank 510. The fourth liquid outlet pump 510 is connected to the second liquid feeding end of the resin mixed bed tank 510. 0 is arranged on the pipeline connecting the acid regeneration liquid storage tank 590 and the resin mixed bed tank 510, the liquid outlet end of the alkali regeneration liquid storage tank 5110 is connected to the third liquid feeding end of the resin mixed bed tank 510, the fifth liquid outlet pump 5120 is arranged on the pipeline connecting the alkali regeneration liquid storage tank 5110 and the resin mixed bed tank 510, the liquid inlet end of the regeneration waste liquid tank 5130 is respectively connected to the first liquid discharge end and the second liquid discharge end of the resin mixed bed tank 510, the liquid outlet end of the regeneration waste liquid tank 5130 is connected to the water inlet end of the coagulation reaction tank 4410, and the sixth liquid outlet pump 5140 is arranged on the pipeline connecting the regeneration waste liquid tank 5130 and the coagulation reaction tank 4410.

[0056] It should be noted that the resin mixed bed tank 510 is also provided with an exhaust valve and a drain valve, the pipeline connecting the alkali regeneration liquid storage tank 5110 and the resin mixed bed tank 510 is also provided with an alkali valve, the pipeline connecting the acid regeneration liquid storage tank 590 and the resin mixed bed tank 510 is also provided with an acid valve, the pipeline connecting the pure water storage tank 570 and the resin mixed bed tank 510 is also provided with a water washing inlet valve, and the pipeline connecting the regeneration liquid waste tank and the resin mixed bed tank 510 is also provided with a drain valve and a regeneration waste liquid inlet valve.

[0057] It is understandable that after the resin mixed bed tank 510 treats a certain amount of wastewater, it is necessary to perform resin regeneration treatment, and the exhaust valve and the drain valve need to be opened to drain the wastewater in the resin mixed bed tank 510; open the alkali valve and the fifth liquid outlet pump 5120, and transport the alkali solution in the alkali regeneration liquid storage tank 5110 to the resin mixed bed tank 510 to soak the resin for 2 hours, and close the alkali valve and the fifth liquid outlet pump 5120; open the water washing inlet valve, the third liquid outlet pump 580, the drain valve and the regeneration waste liquid inlet valve, and transport the pure water in the pure water storage tank 570 to the resin mixed bed tank 510 to rinse the alkali solution on the resin, and the water washing liquid is discharged into the regeneration waste liquid tank 5130 through the first drain end and the second drain end. After the water washing is completed, close and open the water washing inlet valve, the third liquid outlet pump 580, the drain valve and the regeneration waste liquid inlet valve; open The acid valve and the fourth liquid outlet pump 5100 are used to transport the acid in the acid regeneration liquid storage tank 590 to the resin mixed bed tank 510 to soak the resin for 2 hours, and the acid valve and the fourth liquid outlet pump 5100 are closed; the water washing inlet valve, the third liquid outlet pump 580, the drain valve and the regeneration waste liquid inlet valve are opened, and the pure water in the pure water storage tank 570 is transported to the resin mixed bed tank 510 to rinse the alkali liquid on the resin, and the washing liquid is discharged into the regeneration waste liquid tank 5130 through the first liquid discharge end and the second liquid discharge end. After the water washing is completed, the water washing inlet valve, the third liquid outlet pump 580, the drain valve and the regeneration waste liquid inlet valve are closed to complete the resin regeneration treatment in the resin mixed bed tank 510, and the waste liquid in the regeneration waste liquid tank 5130 can be returned to the coagulation reaction tank 4410 for treatment, and no additional treatment of the regeneration liquid is required.

[0058] See also Figures 1 to 5 In one embodiment, the operation process of the electrolyte-containing high-phosphorus and high-fluorine spray wastewater treatment system 10 is as follows:

[0059] The target wastewater is high-phosphorus and high-fluorine spray wastewater containing electrolyte. The main pollutants in the wastewater are fluorine ≤ 1000 mg / L (mainly organic fluorine), pH: 9-11, SS ≤ 10 mg / L, total phosphorus ≤ 200 mg / L, carbonate ≤ 40,000 mg / L, bicarbonate ≤ 50,000 mg / L, etc.

[0060] 1. The production wastewater first enters the homogenization adjustment tank 110 for full mixing;

[0061] 2. Turn on the first outlet pump 120, and the wastewater is discharged through the homogenization adjustment tank 110 to enter the decarbonization reaction tank 210. In the decarbonization reaction tank 210, 30% dilute sulfuric acid is added to control the pH of the wastewater to ≤3.5, the purpose is to remove carbonate and bicarbonate and adjust the pH of the wastewater to provide conditions for the next step of hydrolysis and acidification; a tail gas collection pipe is set at the top of the decarbonization reaction tank 210, and the tail gas generated during the decarbonization reaction is treated by the tail gas treatment system; a water inlet pipe is set at the bottom of the decarbonization reaction tank 210, and a vertical mixer is set inside. The wastewater enters and exits the decarbonization reaction tank 210 from the bottom and is fully reacted. The reaction time of this process is 30 to 60 minutes. The wastewater overflows from the overflow port at the top of the decarbonization reaction tank 210 to the decarbonization water outlet tank 230. The amount of dilute sulfuric acid added is adjusted by measuring the carbonate and bicarbonate contents in the decarbonization water outlet tank 230. The carbonate content of the outlet water is ≤100 mg / L and the bicarbonate content is ≤100 mg / L.

[0062] 3. Turn on the second outlet pump 240 to discharge water through the decarbonization outlet tank 230 to the hydrolysis and acidification reaction tank 310. The hydrolysis and acidification reaction tank 310 is provided with a steam delivery pipe connected to the bottom of the reaction tank. Steam is introduced through the steam delivery pipe 320 to heat the wastewater. The wastewater temperature is controlled at 80-90° C. The hydrolysis and acidification reaction tank 310 is equipped with a vertical mixer to uniformly stir the wastewater to fully hydrolyze and acidify the wastewater. The reaction time of this process is 120-180 minutes.

[0063] 4. Wastewater overflows from the overflow port at the top of the hydrolysis and acidification reaction tank 310 into the coagulation reaction tank 410, and an anionic polyacrylamide solution with a mass fraction of 0.1-0.3% is added at a dosage of 5-10 mg / L. Calcium hydroxide with a mass concentration of 10% is added to the feed end of the coagulation reaction tank 410 at a dosage of 20-30 g / L, which is 1.1-1.2 times the theoretical dosage. The pH value in the coagulation reaction tank 410 is controlled at 9-11. The coagulation reaction tank 410 is equipped with a vertical mixer to uniformly stir the material. The reaction time for this process is 30 to 60 minutes. The function of coagulation is to further remove the remaining carbonates and bicarbonates at the front end, and to preliminarily remove the hydrolyzed inorganic fluorine and phosphates in the wastewater, thereby reducing the fluorine content and total phosphorus content in the water. The dosage of the calcium chloride solution is adjusted by measuring the fluorine content and total phosphorus content in the water in the precipitation tank 430.

[0064] 5. After coagulation, the wastewater enters the vertical flow sedimentation tank 420 for sedimentation. The sludge is discharged from the bottom and filtered by the filter press. The filtrate returns to the coagulation reaction tank 410, and the sludge is transported for disposal. The effluent overflows into the sedimentation outlet tank 430. The sedimentation outlet tank 430 is equipped with a stirring device to uniform the water quality. The effluent indicators of the sedimentation outlet tank 430 are: fluoride ≤ 100 mg / L, SS ≤ 2 mg / L, total phosphorus ≤ 40 mg / L, carbonate ≤ 50 mg / L, and bicarbonate ≤ 50 mg / L.

[0065] 6. Turn on the third effluent pump 450 to discharge water through the sedimentation effluent tank 430 to the coagulation and sedimentation integrated device 440 for secondary fluoride and phosphorus removal treatment. Add calcium chloride with a concentration of 30% to the coagulation reaction tank 4410 in an amount of 2 to 3 g / L, which is 1.1 to 1.2 times the theoretical amount. The pH of the coagulation reaction tank 4410 is controlled at 9 to 11. The coagulation reaction tank 4410 is equipped with a vertical mixer to uniformly stir the wastewater. The reaction time of this process is 30 to 60 minutes.

[0066] 7. The wastewater flows out of the coagulation reaction tank 4410 and enters the flocculation reaction tank 4420. A cationic polyacrylamide solution with a mass fraction of 0.1-0.3% and a dosage of 5-10 mg / L is added at the inlet of the flocculation reaction tank 4420. The reaction time is 30-60 minutes. The flocculation reaction tank 4420 is equipped with a vertical mixer to stir the wastewater at a uniform speed.

[0067] 8. After flocculation, the wastewater enters the inclined plate sedimentation tank 4430 for sedimentation. The sludge is discharged from the bottom and filtered by the filter press. The filtrate returns to the coagulation reaction tank 4410, and the sludge is transported for disposal. The effluent overflows and is stored in the sedimentation tank 4440 and the pH value is adjusted to 3.5-4.5.

[0068] 9. Turn on the fourth outlet pump 470 to discharge water through the sedimentation outlet tank 4440 to the integrated outlet tank 460. The outlet indicators of the integrated outlet tank 460 are: fluoride ≤ 20 mg / L, SS ≤ 1 mg / L, total phosphorus ≤ 10 mg / L, carbonate ≤ 30 mg / L, and bicarbonate ≤ 30 mg / L.

[0069] 10. Turn on the fifth outlet pump 530, which discharges water through the integrated outlet tank 460 to the resin mixed bed tank 510. The water passes through a bag filter 520 to remove fine suspended solids. Resin materials capable of ion exchange with phosphorus and fluorine are added to the resin mixed bed tank 510 to further remove phosphorus and fluorine, ensuring that the effluent meets quality standards. The resin mixed bed tank 510 includes a forward wash and acid-base regeneration system. The forward wash is provided by the integrated coagulation outlet 13, and the regeneration liquid is provided by the acid regeneration liquid storage tank 590 and the alkali regeneration liquid storage tank 5110.

[0070] When the resin mixed bed tank 510 is regenerated, the following steps are required:

[0071] ① Drainage;

[0072] ② Alkali regeneration: open the alkali inlet valve, turn on the fifth liquid outlet pump 5120, and then send 5%-10% dilute alkali solution into the resin tank, stop the pump, and soak the resin in alkali for more than 2 hours;

[0073] ③ Forward washing: Wash the water inlet valve, drain valve and regeneration waste liquid inlet valve with boiling water, start the third liquid outlet pump 580, and flush the alkali solution until the pH value of the outlet water is less than 8-9. The washing water enters the regeneration waste liquid tank 5130;

[0074] ④ Drainage: open the exhaust valve and drain valve;

[0075] ⑤ Acid regeneration: open the acid inlet valve, start the fourth liquid outlet pump 5100, and then send 5-10% dilute acid solution into the resin tank, stop the pump, and soak the resin in acid for more than 2 hours;

[0076] ⑥ Forward wash: Wash the water inlet valve, drain valve and regeneration waste liquid inlet valve with open water, start the third liquid outlet pump 580, and flush the acid until the pH of the outlet water is between 3-4. The wash water enters the regeneration waste liquid tank 5130;

[0077] ⑦ Regeneration is completed and it is ready for use;

[0078] The resin type in the resin mixed bed tank 510 is a large-pore weak acid cation exchange resin with a maximum exchange capacity of 25 mg / mL. The wastewater passing through the bag filter 520 enters the resin mixed bed tank 510 at a rate of 2BV / h to 5BV / h. The resin adsorbs inorganic fluorine and inorganic phosphorus in the wastewater and meets the treatment requirements. The regenerated wash water and acid-base regeneration waste liquid enter the regeneration waste liquid tank 5130. After the wastewater passes through the resin mixed bed tank 510, the TP is ≤5mg / L. The regeneration waste liquid is neutralized and then enters the coagulation and sedimentation integrated device 440 for treatment.

[0079] 11. Wastewater is discharged from the resin mixed bed tank 510 to the resin mixed bed outlet tank 540. A 1% sodium hydroxide solution is added to the inlet end of the resin mixed bed outlet tank 540 to adjust the pH to 6-9. The resin mixed bed outlet tank 540 is equipped with a compressed air pipe to fully mix the materials. The outlet indicators of the resin mixed bed outlet tank 540 are: fluorine ≤8mg / L, SS ≤1mg / L, total phosphorus ≤5mg / L, carbonate ≤30mg / L, bicarbonate ≤30mg / L. The effluent meets the third level of the "Integrated Sewage Discharge Standard GB8978-1996" and can be directly reused or discharged. The substandard wastewater is discharged to the homogenization adjustment tank 110 for further treatment.

[0080] Compared with the prior art, the present disclosure has at least the following advantages:

[0081] The wastewater is transported to the decarbonization reaction tank by the water inlet device, and dilute sulfuric acid is added to the decarbonization reaction tank through the acid source component, so that the dilute sulfuric acid reacts with the carbonate and bicarbonate in the wastewater respectively, and the carbonate and bicarbonate in the wastewater are effectively removed. The wastewater is then transported to the hydrolysis and acidification reaction tank, and steam is transported to the hydrolysis and acidification reaction tank through the steam transmission pipeline to heat the wastewater. The wastewater is acidic after passing through the decarbonization reaction tank, so that the organic fluorine in the wastewater is hydrolyzed and acidified into inorganic fluorine. The wastewater is then transported to the coagulation and sedimentation device. By adding PAM solution and calcium hydroxide agent into the coagulation and sedimentation device, the inorganic fluorine and phosphorus in the wastewater can be effectively removed, so that the electrolyte-containing high-phosphorus and high-fluorine spray wastewater treatment system has a better wastewater effect while reducing the consumption of calcium hydroxide agent, thereby greatly reducing the wastewater treatment cost.

[0082] The above-described embodiments merely represent several implementation methods of the present disclosure. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the disclosed patent. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the scope of the present disclosure, all of which fall within the scope of protection of the present disclosure. Therefore, the scope of protection of the disclosed patent shall be determined by the appended claims.

Claims

1. A system (10) for treating high-phosphorus and high-fluorine electrolyte spray wastewater, characterized in that: include: A water inlet device (100), wherein the water inlet end of the water inlet device (100) is connected to a wastewater source; A decarbonization reaction device (200), the decarbonization reaction device (200) comprising a decarbonization reaction tank (210) and an acid source assembly (220), the water inlet end of the decarbonization reaction tank (210) being in communication with the water outlet end of the water inlet device (100), and the liquid outlet end of the acid source assembly (220) being in communication with the liquid addition end of the decarbonization reaction tank (210); A hydrolysis and acidification device (300), comprising a hydrolysis and acidification reaction tank (310) and a steam delivery pipe (320), wherein a water inlet of the hydrolysis and acidification reaction tank (310) is connected to a water outlet of the decarbonization reaction tank (210), one end of the steam delivery pipe (320) is connected to a steam source, and the other end of the steam delivery pipe (320) extends into the hydrolysis and acidification reaction tank (310); A coagulation and sedimentation device (400), wherein the water inlet of the coagulation and sedimentation device (400) is connected to the water outlet of the hydrolysis and acidification reaction tank (310).

2. The electrolyte-containing high-phosphorus and high-fluorine spray wastewater treatment system (10) according to claim 1 is characterized in that: The water inlet device (100) comprises a homogenization regulating tank (110) and a first water outlet pump (120); the water inlet end of the homogenization regulating tank (110) is connected to the wastewater source; the water outlet end of the homogenization regulating tank (110) is connected to the water inlet end of the decarbonization reaction tank (210); and the first water outlet pump (120) is arranged on a pipeline connecting the homogenization regulating tank (110) and the decarbonization reaction tank (210).

3. The electrolyte-containing high-phosphorus and high-fluorine spray wastewater treatment system (10) according to claim 1 is characterized in that: The decarbonization reaction device (200) further includes a decarbonization water outlet tank (230) and a second water outlet pump (240). The water inlet end of the decarbonization water outlet tank (230) is connected to the water outlet end of the decarbonization reaction tank (210), and the water outlet end of the decarbonization water outlet tank (230) is connected to the water inlet end of the hydrolysis and acidification reaction tank (310). The second water outlet pump (240) is arranged on a pipeline connecting the decarbonization water outlet tank (230) and the hydrolysis and acidification reaction tank (310).

4. The electrolyte-containing high-phosphorus and high-fluorine spray wastewater treatment system (10) according to claim 1 is characterized in that: The acid source component (220) comprises an acid storage tank (2210) and a first liquid outlet pump (2220), wherein the liquid outlet end of the acid storage tank (2210) is connected to the liquid feeding end of the decarbonization reaction tank (210), and the first liquid outlet pump (2220) is arranged on a pipeline connecting the acid storage tank (2210) and the decarbonization reaction tank (210).

5. The electrolyte-containing high-phosphorus and high-fluorine spray wastewater treatment system (10) according to claim 2 is characterized in that: The coagulation and sedimentation device (400) includes a coagulation reaction tank (410), a vertical flow sedimentation tank (420) and a sedimentation water outlet tank (430), the water inlet end of the coagulation reaction tank (410) is connected to the water outlet end of the hydrolysis and acidification reaction tank (310), the water outlet end of the coagulation reaction tank (410) is connected to the water inlet end of the vertical flow sedimentation tank (420), and the water outlet end of the vertical flow sedimentation tank (420) is connected to the water inlet end of the sedimentation water outlet tank (430).

6. The electrolyte-containing high-phosphorus and high-fluorine spray wastewater treatment system (10) according to claim 5 is characterized in that: The coagulation and sedimentation device (400) further includes a coagulation and sedimentation integrated device (440) and a third outlet pump (450). The coagulation and sedimentation integrated device (440) is provided with a coagulation reaction tank (4410), a flocculation reaction tank (4420), an inclined plate sedimentation tank (4430) and a sedimentation outlet tank (4440) which are sequentially connected along the water inlet direction. The water inlet end of the coagulation reaction tank (4410) is connected to the water outlet end of the sedimentation outlet tank (430). The third outlet pump (450) is arranged on a pipeline connecting the coagulation reaction tank (4410) and the sedimentation outlet tank (430).

7. The electrolyte-containing high-phosphorus and high-fluorine spray wastewater treatment system (10) according to claim 6 is characterized in that: The coagulation and sedimentation device (400) further includes an integrated water outlet tank (460) and a fourth water outlet pump (470), wherein the water inlet end of the integrated water outlet tank (460) is connected to the water outlet end of the sedimentation water outlet tank (4440), and the fourth water outlet pump (470) is arranged on a pipeline connecting the integrated water outlet tank (460) and the sedimentation water outlet tank (4440).

8. The electrolyte-containing high-phosphorus and high-fluorine spray wastewater treatment system (10) according to claim 7 is characterized in that: The wastewater treatment system (10) further comprises a resin mixed bed device (500), the resin mixed bed device (500) comprising a resin mixed bed tank (510), a bag filter (520) and a fifth water outlet pump (530), the water inlet end of the resin mixed bed tank (510) being in communication with the water outlet end of the integrated water outlet tank (460), and the bag filter (520) and the fifth water outlet pump (530) being both arranged on a pipeline connecting the resin mixed bed tank (510) and the integrated water outlet tank (460).

9. The electrolyte-containing high-phosphorus and high-fluorine spray wastewater treatment system (10) according to claim 8, characterized in that: The resin mixed bed device (500) further comprises a resin mixed bed water outlet tank (540), an alkali storage tank (550) and a second liquid outlet pump (560); the water inlet end of the resin mixed bed water outlet tank (540) is connected to the water outlet end of the resin mixed bed tank (510); the liquid outlet end of the alkali storage tank (550) is connected to the liquid feeding end of the resin mixed bed water outlet tank (540); and the second liquid outlet pump (560) is arranged on a pipeline connecting the alkali storage tank (550) and the resin mixed bed water outlet tank (540).

10. The electrolyte-containing high-phosphorus and high-fluorine spray wastewater treatment system (10) according to claim 9 is characterized in that: The wastewater treatment system (10) further comprises a water outlet device (600), the water outlet device comprising a water outlet pipe (610) and a sixth water outlet pump (620), the water inlet end of the water outlet pipe (610) being in communication with the water outlet end of the resin mixed bed water outlet tank (540), the water outlet end of the water outlet pipe (610) being in communication with the wastewater discharge pipe and the water inlet end of the homogenization adjustment tank (110), respectively, the sixth water outlet pump (620) being arranged on the water outlet pipe (610); and / or, The resin mixed bed device (500) further comprises a pure water storage tank (570), a third liquid outlet pump (580), an acid regeneration liquid storage tank (590), a fourth liquid outlet pump (5100), an alkali regeneration liquid storage tank (5110), a fifth liquid outlet pump (5120), a regeneration waste liquid tank (5130) and a sixth liquid outlet pump (5140), wherein the liquid outlet end of the pure water storage tank (570) is connected to the first liquid feeding end of the resin mixed bed tank (510), the third liquid outlet pump (580) is arranged on a pipeline connecting the pure water storage tank (570) and the resin mixed bed tank (510), the liquid outlet end of the acid regeneration liquid storage tank (590) is connected to the second liquid feeding end of the resin mixed bed tank (510), and the fourth liquid outlet pump (5100) is arranged on the acid regeneration waste liquid tank (510). The liquid storage tank (590) and the resin mixed bed tank (510) are connected on the pipeline, the liquid outlet end of the alkali regeneration liquid storage tank (5110) is connected to the third liquid feeding end of the resin mixed bed tank (510), the fifth liquid outlet pump (5120) is arranged on the pipeline connecting the alkali regeneration liquid storage tank (5110) and the resin mixed bed tank (510), the liquid inlet end of the regeneration waste liquid tank (5130) is respectively connected to the first liquid discharge end and the second liquid discharge end of the resin mixed bed tank (510), the liquid outlet end of the regeneration waste liquid tank (5130) is connected to the water inlet end of the coagulation reaction tank (4410), and the sixth liquid outlet pump (5140) is arranged on the pipeline connecting the regeneration waste liquid tank (5130) and the coagulation reaction tank (4410).

Images