Phosphogypsum washing wastewater purification treatment system

Abstract

The invention belongs to the technical field of wastewater adsorption and purification, and particularly relates to a water-washing phosphogypsum wastewater purification treatment system which comprises a pretreatment module, an adsorption and purification module and a detection module, the pretreatment module performs preliminary filtration treatment on wastewater, the adsorption and purification module performs adsorption and purification treatment on the pretreated wastewater, and the detection module performs detection on the wastewater. The detection module is used for detecting the treated wastewater and judging whether the treated wastewater reaches a discharge standard or not; large water pressure is formed at the position of the liquid inlet pipe at the bottom through wastewater liquid level difference, and water flow formed through instant conduction impacts a purification cavity in the purification layer, so that adsorption materials which adsorb impurities and have the tendency of mutual adhesion and clustering are dissociated and dispersed under the action of the purification water flow which is violently impacted; the purification layer with unsmooth circulation is effectively self-cleaned, so that the smooth flow of the wastewater is ensured, the frequency of manual cleaning is reduced, and the purification efficiency of the phosphogypsum washing wastewater is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of wastewater adsorption purification, in particular to a water-washed phosphogypsum wastewater purification treatment system. Background Art

[0002] Phosphogypsum generally refers to the byproduct obtained by using sulfuric acid to decompose phosphate ore to produce phosphoric acid. According to different production processes, phosphogypsum can be divided into dihydrate gypsum and hemihydrate gypsum. At present, more than 70% of phosphoric acid production in the phosphoric acid industry adopts the dihydrate process. With the continuous expansion of domestic phosphoric acid production capacity, the annual output of phosphogypsum has reached 80 million tons, of which only a small part is used. At present, the utilization rate of phosphogypsum is not high, which is about 40% of the annual production volume. Most of it is still processed by stockpiling. Therefore, the stockpile of phosphogypsum is also increasing year by year. The current stockpile of phosphogypsum has reached 700 million tons. In addition to occupying a large amount of land resources, there are also great environmental risks. In particular, when there is a problem with the waterproofing of the phosphogypsum yard, the water-soluble phosphorus and fluorine in the gypsum may cause environmental pollution with the leakage of water bodies.

[0003] The purification treatment of phosphogypsum mainly adopts warm water washing, rinsing the phosphogypsum in a pulping tank, and then further leaching in the filter, and mechanical dehydration under vacuum. The skills of using phosphogypsum include the treatment process of washing and separating phosphogypsum and neutralizing free acid. The soluble pollutants in phosphogypsum are easily soluble in water, and living things are suspended on the water surface during the washing process. Most of these impurities can be removed by washing. The sewage after washing must be treated before it can be discharged or reused. The main physical treatment methods are filtration, precipitation and adsorption. The use of chemical agents makes the pollutants precipitate and settle. After separation, the filtration device can be used for purification and separation. For example, a mixed filter tank is used to treat phosphogypsum sewage, and the pollutants in the wastewater can be removed by the adsorption of the filter material.

[0004] During existing use, the filter adsorption material accumulated inside the filter tank has an uneven degree of contact with the wastewater flowing through it. Due to the effect of gravity, the adsorbed impurities flow down through the gaps in the filter adsorption material, resulting in the accumulation of impurities and pollutants at the bottom. In this way, the enriched impurities are in the gaps in the filter adsorption material in the bottom area, and the separated impurities and pollutants are unevenly distributed, affecting the passability of the wastewater in the middle of the filter tank, resulting in the filter tank needing to be frequently manually cleaned, affecting the purification efficiency of the wastewater. Summary of the invention

[0005] In order to make up for the deficiencies of the prior art and solve the above-mentioned technical problems, the present invention proposes a water-washed phosphogypsum wastewater purification treatment system.

[0006] The technical solution adopted by the present invention to solve the technical problem is as follows: the present invention proposes a water-washed phosphogypsum wastewater purification treatment system, comprising a pretreatment module, an adsorption purification module and a detection module, wherein the pretreatment module performs preliminary filtering treatment on the wastewater, the adsorption purification module performs adsorption purification treatment on the pretreated wastewater, and the detection module detects the treated wastewater to determine whether the treated wastewater meets the discharge standard;

[0007] The adsorption purification module includes a purification channel, and a plurality of purification layers are evenly arranged inside the purification channel, and the purification layers are used to perform adsorption purification treatment on the flowing wastewater; the purification layer includes a purification box, and an adsorption material filled in the purification cavity inside the purification box;

[0008] The two sides of the purification box are slidably connected to the inner wall of the purification flow channel. A liquid inlet pipe is provided at the bottom position of the front side of the purification box, and the liquid inlet pipe is communicated with the interior of the purification chamber; a liquid outlet is provided at the back side of the purification box, and the liquid outlet is located near the top on the back side of the purification box; sliders are provided on both sides of the purification box, and the sliders are slidably embedded in the slide grooves provided on the inner wall of the purification flow channel.

[0009] Preferably, the liquid inlet pipe is slidably connected to the side wall of the purification box, and a limiting cylinder is provided at a position of the inner wall of the purification box corresponding to the end of the liquid inlet pipe;

[0010] The end of the liquid inlet pipe located inside the purification box is slidably embedded in the limiting cylinder, and the end of the liquid inlet pipe is connected to the inner wall of the limiting cylinder through an elastic member; scattered holes are evenly arranged on the side wall of the liquid inlet pipe, and the scattered holes connect the interior of the purification chamber and the interior of the liquid inlet pipe.

[0011] Preferably, a control rod is provided in the middle position of the liquid inlet pipe, one end of the control rod extends to the inlet of the liquid inlet pipe, and a closing plate is provided to close the inlet of the liquid inlet pipe; the other end of the control rod transversely penetrates the middle position of the inner wall of the limit cylinder, and is connected to the telescopic device provided in the inner wall of the limit cylinder.

[0012] Preferably, combing rods are evenly arranged on the surface of the control rod, the connecting portion between the combing rod and the control rod is made of elastic material, and the end of the combing rod slides through the dispersion holes arranged on the side wall of the liquid inlet pipe.

[0013] Preferably, a dispersion rod is provided on the end of the combing rod, the dispersion rod is distributed in a ring shape around the combing rod, and bristles are provided on the side walls of the dispersion rod.

[0014] Preferably, the control rod is a tubular structure, and the interior of the control rod is communicated with the interior of the limiting cylinder through a liquid filling hole; a communicating hole is provided on the outer surface of the side wall of the limiting cylinder, the communicating hole is communicated with the interior of the limiting cylinder, and a filter is provided at the opening of the communicating hole; a piston plate is provided on the end of the control rod embedded in the interior of the limiting cylinder, and the piston plate is slidably connected to the inner wall of the limiting cylinder;

[0015] The combing rod and the dispersion rod are both tubular structures, and the control rod, the combing rod and the dispersion rod are all connected. Impact holes are evenly arranged on the dispersion rod, and the impact holes are connected to the hollow part inside the dispersion rod.

[0016] Preferably, partitions are evenly arranged in the area between the liquid inlet pipe and the liquid outlet inside the purification box, the partitions are arranged vertically, and the gap areas between the partitions form a guide channel.

[0017] Preferably, a crushing plate is provided on the inner wall of the diversion channel, the crushing plate is arranged in a curved manner, and the crushing plates on both sides of the diversion channel are staggered with each other.

[0018] Preferably, the guide channel includes an upstream channel and a downstream channel, the upstream channel and the downstream channel are staggered with each other, and the liquid inlet pipe is located at the bottom position of the upstream channel, and the end of the crushing plate in the upstream channel is bent downward, and the end of the crushing plate in the downstream channel is bent downward.

[0019] Preferably, a rotating device is provided on the telescopic end of the telescopic device, and the output end of the rotating device is connected to the control rod.

[0020] The beneficial effects of the present invention are as follows:

[0021] In a water-washed phosphogypsum wastewater purification treatment system of the present invention, in order to ensure the passability of wastewater through the purification layer, the liquid inlet pipe is closed for the purification layer whose passability is affected, so that the wastewater in the front area of ​​the purification layer continues to concentrate and begins to store water, while the wastewater level in the rear area of ​​the purification layer drops because the wastewater source is cut off, so that a large wastewater level difference is formed in the areas on both sides of the purification layer; until the wastewater in the front area of ​​the purification layer accumulates to a height exceeding the liquid outlet, the liquid inlet pipe is opened, because the wastewater level difference forms a large water pressure at the bottom of the liquid inlet pipe position, the water flow formed by the instant conduction impacts the purification chamber inside the purification layer, and the water hammer effect causes the adsorption material in the bottom area of ​​the purification chamber to be severely impacted, and the adsorption material flows upward due to the impact, so that the adsorption materials in different areas in the vertical direction inside the purification chamber are exchanged;

[0022] The adsorbed materials that tend to adhere to each other and form agglomerates due to the adsorbed impurities are dissociated and dispersed by the violent impact of the purified water flow, and the impurities accumulated in the gap areas of the adsorbed materials are also evenly dispersed due to the impact. In this way, the purification layer with poor circulation is effectively self-cleaned, and the areas that may be compacted and blocked are self-combed to restore the smooth circulation of the wastewater. In this way, after working continuously for a period of time, multiple purification layers can be self-cleaned in turn to avoid the problem of poor wastewater circulation or even blockage caused by the concentration of impurities in the bottom area of ​​the purification chamber due to gravity. This ensures the smooth flow of wastewater, reduces the frequency of manual cleaning, and improves the purification efficiency of water-washed phosphogypsum wastewater. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described below in conjunction with the accompanying drawings.

[0024] Figure 1 is a stereogram of the present invention;

[0025] Figure 2 is a three-dimensional diagram of the purification box in the present invention;

[0026] Figure 3 It is the internal structure diagram of the purification box in the present invention;

[0027] Figure 4 is a cross-sectional view of the purification box in the present invention in the side view direction;

[0028] Figure 5 yes Figure 4 A partial enlarged view of the middle A;

[0029] Figure 6 yes Figure 4 A partial enlarged view of point B in the middle.

[0030] In the figure: purification channel 1, purification chamber 11, slider 12, slide 13, purification layer 2, purification box 21, limiting cylinder 211, connecting hole 212, liquid inlet pipe 22, dispersion hole 221, liquid outlet 23, control rod 24, closing plate 241, telescopic device 242, combing rod 243, dispersion rod 244, impact hole 245, rotating device 246, filling hole 247, piston plate 248, partition 25, guide channel 26, crushing plate 261, upstream channel 262, downstream channel 263. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] Embodiment 1:

[0033] In order to effectively solve the above problems, as shown in the accompanying drawings of the specification Figure 1-Figure 6 As shown, a water-washed phosphogypsum wastewater purification system includes a pretreatment module, an adsorption purification module and a detection module. The pretreatment module performs preliminary filtering treatment on the wastewater and adds chemical agents to the wastewater to accelerate the precipitation of flocculated impurities therein. The adsorption purification module performs adsorption purification treatment on the pretreated wastewater. The detection module detects the treated wastewater to determine whether the treated wastewater meets the discharge standard.

[0034] The adsorption purification module includes a purification channel 1, and a plurality of purification layers 2 are evenly arranged inside the purification channel 1, and the purification layer 2 is used to perform adsorption and purification treatment on the flowing wastewater; the purification layer 2 includes a purification box 21, and an adsorption material filled in the purification chamber 11 inside the purification box 21, and the adsorption material here can be selected from filter materials with sewage purification and adsorption functions such as activated carbon particles;

[0035] The purification box 21 is slidably connected to the inner wall of the purification channel 1 on both sides, and a liquid inlet pipe 22 is arranged at the bottom position of the front side of the purification box 21, and the liquid inlet pipe 22 is communicated with the inside of the purification chamber 11; a liquid outlet 23 is arranged on the back side of the purification box 21, and the liquid outlet 23 is located on the back side of the purification box 21 near the top; sliders 12 are arranged on both sides of the purification box 21, and the sliders 12 are slidably embedded in the slide grooves 13 arranged on the inner wall of the purification channel 1, and the cooperation between the sliders 12 and the slide grooves 13 realizes the limited fixation of the purification box 21. After working continuously for a long time, the purification box 21 can be slid out during the purification interval, and the internal adsorption materials can be cleaned and replaced to ensure the smooth progress of the wastewater purification process.

[0036] Specific work flow: In order to better purify the water-washed phosphogypsum wastewater, the purification system of the present application is introduced. First, the large particle impurities and suspended impurities in the wastewater are separated by the pretreatment module. The pretreatment module can be an existing wastewater coarse filtration device; then, purification agents such as flocculants and acid-base adjustment agents are mixed in to adjust the pH of the wastewater and accelerate the flocculation and precipitation of impurities therein. Finally, the wastewater preliminarily purified by the pretreatment module enters the adsorption purification module for extended purification treatment;

[0037] Specifically, wastewater is introduced into the purification channel 1 and flows slowly along the purification channel 1. A plurality of purification layers 2 are sequentially arranged in the purification channel 1. When the waste gas passes through each purification layer 2, it first contacts the purification box 21 in the purification layer 2, flows in from the liquid inlet pipe 22 arranged on the front of the purification box 21, and contacts the adsorption material inside the purification chamber 11. The wastewater flows from bottom to top along the gap between the adsorption materials. During this process, the pollutants in the wastewater are adsorbed onto the surface of the adsorption material, so that the wastewater is subjected to adsorption purification treatment and the fine pollutants therein are separated. After the wastewater flows out from the liquid outlet 23 near the top, it continues to contact the next purification layer 2 along the purification channel 1 and is repeatedly subjected to purification treatment. Finally, the wastewater is detected and processed by the detection module, and after reaching the purification standard, it flows to the next process.

[0038] Furthermore, in order to ensure the passability of wastewater through the purification layer 2, the on-off of the liquid inlet pipe 22 is controlled by an external controller, and a flow detection sensor is provided at the liquid outlet 23. When it is detected that the flow rate of the liquid outlet 23 of the purification layer 2 slows down and is significantly lower than the normal range, it means that the adsorption material inside the purification layer 2 adsorbs too many pollutants, and the enriched impurities are unevenly distributed in the gaps between the adsorption materials, which affects the passability of the wastewater in the middle of the adsorption materials; for the purification layer 2 whose passability is affected, the liquid inlet pipe 22 is closed, so that the wastewater in the front area of ​​the purification layer 2 continues to concentrate and begins to store water, while the wastewater level in the rear area of ​​the purification layer 2 drops because the wastewater source is cut off, so a large wastewater level difference is formed on both sides of the purification layer 2;

[0039] When the wastewater in the front area of ​​the purification layer 2 accumulates to a height exceeding the liquid outlet 23, the liquid inlet pipe 22 is opened. Because the wastewater level difference forms a large water pressure at the bottom of the liquid inlet pipe 22, the water flow formed by the instantaneous conduction impacts the purification chamber 11 inside the purification layer 2. The water hammer effect causes the adsorption material in the bottom area of ​​the purification chamber 11 to be severely impacted. The adsorption material flows upward due to the impact, so that the adsorption materials in different vertical areas of the purification chamber 11 are exchanged; the adsorption materials that have a tendency to adhere to each other and form a mass due to the adsorption of impurities are dissolved by the purification water flow with severe impact. The impurities accumulated in the gap area of ​​the adsorbed materials are evenly dispersed due to the impact, so that the purification layer 2 with poor circulation can be effectively self-cleaned, and the areas that may be compacted and blocked can be self-combed to restore the smooth circulation of the wastewater. In this way, after a period of continuous operation, the multiple purification layers 2 can be self-cleaned in turn to avoid the problem of poor wastewater circulation or even blockage caused by the concentration of impurities in the bottom area of ​​the purification chamber 11 due to gravity. This ensures the smooth flow of wastewater, reduces the frequency of manual cleaning, and improves the purification efficiency of water-washed phosphogypsum wastewater.

[0040] Embodiment 2:

[0041] On the basis of the first embodiment, the liquid inlet pipe 22 is slidably connected to the side wall of the purification box 21, and a limiting cylinder 211 is provided at a position corresponding to the end of the liquid inlet pipe 22 and the inner wall of the purification box 21;

[0042] The end of the liquid inlet pipe 22 located inside the purification box 21 is slidably embedded in the limiting cylinder 211, and the end of the liquid inlet pipe 22 is connected to the inner wall of the limiting cylinder 211 by an elastic member, and the elastic member here can be a spring; dispersion holes 221 are evenly arranged on the side wall of the liquid inlet pipe 22, and the dispersion holes 221 connect the interior of the purification box 21 and the interior of the liquid inlet pipe 22; a control rod 24 is arranged in the middle position of the liquid inlet pipe 22, one end of the control rod 24 extends to the entrance of the liquid inlet pipe 22, and a closing plate 241 is arranged to close the entrance of the liquid inlet pipe 22, and the other end of the control rod 24 transversely passes through the middle position of the inner wall of the limiting cylinder 211, and is connected to the telescopic device 242 arranged in the inner wall of the limiting cylinder 211, and the telescopic device 242 here can be an existing electric telescopic device.

[0043] Specific workflow: Based on the specific workflow in Example 1, regarding the on-off control of the liquid inlet pipe 22, this embodiment provides a possible technical solution. When the liquid inlet pipe 22 needs to remain closed, the telescopic device 242 is controlled to shorten, so that the control rod 24 drives the closing plate 241 to approach the opening of the liquid inlet pipe 22 and squeeze and close the opening of the liquid inlet pipe 22. At this time, the elastic member between the liquid inlet pipe 22 and the limiting cylinder 211 remains in a compressed state, and the end of the liquid inlet pipe 22 is in close contact with the closing plate 241; when the liquid inlet pipe 22 needs to be opened, the telescopic device 242 is controlled to extend, and the control rod 24 drives the closing plate 241 away from the liquid inlet pipe 22, so that the opening of the liquid inlet pipe 22 contacts the wastewater, and the squeeze limit is released, so that the wastewater from the outside can be accelerated to flow into the inside of the liquid inlet pipe 22, and flow out from the dispersion holes 221 evenly arranged on the side wall of the liquid inlet pipe 22, and evenly flow into the adsorption material gap inside the purification chamber 11;

[0044] During use, the telescopic device 242 can be started to move back and forth multiple times, so that the liquid inlet pipe 22 is opened and closed multiple times. In this way, the water pressure caused by the liquid level difference on both sides of the purification layer 2 is combined to form an intermittent violent impact water flow that impacts vertically upward from the bottom of the purification chamber 11, so as to promote the uniform mixing of the adsorption materials inside the purification chamber 11, and fully break up the part of the adsorption materials that tends to be adsorbed into agglomerates, so as to ensure the smooth flow of wastewater;

[0045] In this process, due to the impact of external wastewater and the elastic connection between the liquid inlet pipe 22 and the limiting cylinder 211, the liquid inlet pipe 22 slides back and forth along the limiting cylinder 211 under the impact of the wastewater, causing the intensity of the outflowing wastewater to change dramatically. The repeated impact of the water flow causes the adsorption material near the liquid inlet pipe 22 inside the purification chamber 11 to be impacted by the flowing wastewater and stirred, thereby accelerating the mutual exchange flow of purification materials at different positions inside the purification chamber 11, so that the adsorbed impurities and pollutants are evenly distributed, avoiding the problem of blockage of the liquid inlet pipe 22 due to local concentration; the repeated flow of the liquid inlet pipe 22 causes the mutual friction between the flowing wastewater, the adsorption material and the liquid inlet pipe 22, and also prevents the adsorption material and pollutants from adhering to the surface of the liquid inlet pipe 22, ensuring the smooth flow of the dispersion holes 221 on the liquid inlet pipe 22, so that the purification of the wastewater can proceed smoothly.

[0046] Embodiment three:

[0047] On the basis of the second embodiment, combing rods 243 are evenly arranged on the surface of the control rod 24, and the connecting part of the combing rod 243 and the control rod 24 is made of elastic material, so that the combing rod 243 can swing relative to the control rod 24, and the end of the combing rod 243 slides through the dispersion holes 221 arranged on the side wall of the liquid inlet pipe 22;

[0048] A dispersion rod 244 is disposed at the end of the combing rod 243. The dispersion rod 244 is distributed in a ring shape around the combing rod 243, and bristles are disposed on the side walls of the dispersion rod 244.

[0049] Specific work flow: Based on the specific work flow in the second embodiment, the combing rod 243 on the control rod 24 passes through the dispersion hole 221 and is slidably connected with the dispersion hole 221; when the external wastewater impact causes the liquid inlet pipe 22 to slide back and forth along the limit cylinder 211, the control rod 24 slides relative to the liquid inlet pipe 22. During this process, the combing rod 243 swings back and forth relative to the control rod 24 under the action of the reciprocating dispersion hole 221; the swinging combing rod 243 combs the dispersion hole 221 on the liquid inlet pipe 22, which can effectively clean the impurities and pollutants adhering to the dispersion hole 221 and the inner wall of the liquid inlet pipe 22, and ensure the smooth flow of the liquid inlet pipe 22 and the dispersion hole 221;

[0050] Furthermore, after the end of the combing rod 243 extends out of the dispersion hole 221, it is embedded in the gap of the adsorption material at the bottom of the purification chamber 11, and the end of the dispersion rod 244 divergently arranged on the end of the combing rod 243 contacts the adsorption material; as the combing rod 243 swings, the dispersion rod 244 and the bristles on the dispersion rod 244 are driven to swing and rub the adsorption material in contact, thereby accelerating the flow of the adsorption material at the bottom of the purification chamber 11, and the impact of the dispersion rod 244 and the combing bristles also causes the part of the adsorption material that tends to agglomerate to be broken and refined under the impact of the dispersion rod 244, so that the part of the bottom of the purification chamber 11 that has a tendency to form a solid agglomeration due to gravity extrusion is dispersed under the impact, thereby making the adsorption material at the bottom position tend to be loose, which is convenient for the wastewater to flow from bottom to top, and the adsorption material is prompted to fully contact and utilize the wastewater, thereby further exerting the adsorption purification effect.

[0051] Embodiment 4:

[0052] On the basis of the third embodiment, the control rod 24 is a tubular structure, and the inner area of ​​the control rod 24 is communicated with the inner part of the limiting cylinder 211 through a liquid filling hole 247, and the liquid filling hole 247 is located on the end of the control rod 24 embedded in the inner part of the limiting cylinder 211; the outer surface of the side wall of the limiting cylinder 211 is provided with a connecting hole 212, the connecting hole 212 is communicated with the inner part of the limiting cylinder 211, and a filter is provided at the opening of the connecting hole 212; a piston plate 248 is provided on the end of the control rod 24 embedded in the limiting cylinder 211, and the piston plate 248 is slidably connected with the inner wall of the limiting cylinder 211; the part where the outer ring of the piston plate 248 slides in contact with the inner wall of the limiting cylinder 211 is made of rubber elastic material;

[0053] The combing rod 243 and the dispersion rod 244 are both tubular structures, and the control rod 24 , the combing rod 243 and the dispersion rod 244 are all connected. Impact holes 245 are evenly arranged on the dispersion rod 244 , and the impact holes 245 are connected to the hollow part inside the dispersion rod 244 .

[0054] Specific workflow: Based on the specific workflow in the third embodiment, the connecting hole 212 is set as a tapered hole, and the end of the connecting hole 212 close to the inside of the limiting cylinder 211 is the small end; as the control rod 24 reciprocates, the piston plate 248 on the control rod 24 moves outward, so that the internal area of ​​the limiting cylinder 211 sucks wastewater from the external purification chamber 11 due to negative pressure, and the wastewater flows into the limiting cylinder 211 through the large end position of the connecting hole 212, filling the limiting cylinder 211. The control rod 24 then drives the piston plate 248 to reset and squeeze the waste water inside the limiting cylinder 211. Since it is difficult for the waste water to flow out in time through the small end of the communicating hole 212, the waste water inside the limiting cylinder 211 is squeezed and the large water pressure formed causes the waste water to flow into the hollow area inside the control rod 24 through the filling hole 247 at an accelerated speed, and then flows outward along the interconnected combing rod 243 and the dispersion rod 244, and finally flows out from the impact hole 245 on the dispersion rod 244.

[0055] On the one hand, the impact hole 245 is located in the gap area of ​​the bristles on the dispersion rod 244, so the waste water flowing out of the impact hole 245 concentrates the water flow to impact the part of the adsorption material in contact with the dispersion rod 244, so that the dispersion rod 244 can stir the adsorption material in contact, and the water flow sprayed from the impact hole 245 can further extend into the adsorption material to impact and stir it, and further impact and disperse the adsorption material agglomerates that are adhered and clumped, and the waste water flowing out through the gap between the bristles can also flush and clean the bristles, thereby ensuring the cleaning of the dispersion rod 244 and the bristles themselves;

[0056] On the other hand, in the process of wastewater accelerating through the combing rod 243 and the dispersion rod 244, the friction of the wastewater flow causes the combing rod 243 and the dispersion rod 244 to accelerate vibration due to the wastewater flow, thereby causing the adsorbed materials and pollutant impurities adhered to the surface to fall off, thereby better ensuring the normal operation of the combing rod 243 and the dispersion rod 244; the vibration of the combing rod 243 can also more effectively clean the impurities adhered to the inner wall of the corresponding dispersion hole 221, thereby ensuring the dredging of the dispersion hole 221, and then ensuring the normal passability of the wastewater.

[0057] Embodiment five:

[0058] On the basis of the fourth embodiment, the area between the liquid inlet pipe 22 and the liquid outlet 23 inside the purification box 21 is evenly provided with partitions 25, the partitions 25 are vertically arranged, and the gap area between the partitions 25 forms a guide channel 26; the inner wall of the guide channel 26 is provided with a crushing plate 261, the crushing plate 261 is bent, and the crushing plates 261 on both sides of the guide channel 26 are staggered with each other;

[0059] The guide channel 26 includes an upstream channel 262 and a downstream channel 263, which are staggered with each other, and the liquid inlet pipe 22 is located at the bottom of the upstream channel 262, and the end of the crushing plate 261 in the upstream channel 262 is bent downward, and the end of the crushing plate 261 in the downstream channel 263 is bent downward.

[0060] Specific workflow: Based on the specific workflow in the fourth embodiment, in order to promote the mixing and uniform distribution of adsorbent materials in different areas of the purification chamber 11, and avoid the local concentration of pollutants and impurities, which affects the passability of wastewater and the normal purification process; therefore, the evenly vertically arranged partitions 25 make the interior of the purification chamber 11 divided into a plurality of vertically extending guide channels 26, wherein the liquid inlet pipe 22 is located at the bottom of the upstream channel 262; thus, due to the water pressure formed by the liquid level difference, the wastewater from the outside is accelerated to flow into the liquid inlet pipe 22, and then flows from the bottom to the top, passes through the upstream channel 262 and flows out from the liquid outlet 23 at the top;

[0061] In this process, the wastewater flowing upward drives the adsorbent material at the bottom of the upstream channel 262 to flow upward along the upstream channel 262, and contacts the crushing plate 261 corresponding to the partition 25, so that the upstream adsorbent material passes through the gap of the crushing plate 261, wherein the agglomerated part of the adsorbent material is impacted by the crushing plate 261 when passing through the gap of the crushing plate 261, and is crushed, refined and dispersed, so that the adsorbent material flowing upward is more refined and uniform; when the adsorbent material flows to the top area of ​​the purification chamber 11 along with the wastewater, the wastewater flows out through the liquid outlet 23, and the adsorbent material is concentrated at the top of the purification chamber 11, and then moves horizontally to the upper area of ​​the downstream channel 263, because the impact of the upward flow of the wastewater is concentrated in the upstream channel 262, when the adsorbent material moves to the upper area of ​​the downstream channel 263, the upward impact is weakened, so it flows downward under the action of gravity, and is again crushed and impacted by the crushing plate 261 on the inner wall of the downstream channel 263 during the downward flow process, so that the adsorbent material is further refined;

[0062] In this way, during the upward flow of wastewater, the adsorption material is driven to flow up from the upstream channel 262 and then flow down from the downstream channel 263. Such vertical circulation flow enables the adsorption materials at different vertical positions inside the purification chamber 11 to fully exchange and flow, thereby avoiding the problem of pollutants and impurities concentrating in the bottom area due to gravity and affecting the passability of wastewater.

[0063] Embodiment six:

[0064] On the basis of the fifth embodiment, a rotating device 246 is provided on the telescopic end of the telescopic device 242, and the output end of the rotating device 246 is connected to the control rod 24. The rotating device 246 here can be a rotating motor device;

[0065] Specific work flow: On the basis of the specific work flow in Example 5, the timing rotating device 246 is performed for a period of time. After the rotating device 246 is started, it can drive the control rod 24 and the combing rod 243 to rotate, and at the same time drive the mutually interlocking liquid inlet pipe 22 to rotate, and the divergently arranged combing rod 243 has a rotation range covering the lower area of ​​the partition 25, so that the adsorption material part of the bottom of the purification chamber 11 located in the lower area of ​​the partition 25 is affected by the rotating combing rod 243 and the dispersion rod 244, which strengthens the stirring and dispersion effect on the adsorption material, and promotes the lateral flow of the adsorption material in the lower area of ​​the partition 25, thereby improving the flow exchange efficiency of the horizontal wind direction of the adsorption material in the bottom area, so that the adsorption material is mixed and distributed more evenly.

[0066] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A system for purifying and treating wastewater from washing phosphogypsum, comprising a pretreatment module, an adsorption purification module and a detection module, wherein the pretreatment module performs preliminary filtering treatment on the wastewater, the adsorption purification module performs adsorption purification treatment on the pretreated wastewater, and the detection module detects the treated wastewater to determine whether the treated wastewater meets the discharge standard; It is characterized in that The adsorption purification module comprises a purification channel (1), a plurality of purification layers (2) are evenly arranged inside the purification channel (1), and the purification layers (2) are used to perform adsorption purification treatment on flowing wastewater; the purification layers (2) comprise a purification box (21), and an adsorption material filled in a purification cavity (11) inside the purification box (21); The purification box (21) is slidably connected to the inner wall of the purification channel (1) on both sides; a liquid inlet pipe (22) is provided at the bottom of the front side of the purification box (21), and the liquid inlet pipe (22) is communicated with the interior of the purification chamber (11); a liquid outlet (23) is provided at the back side of the purification box (21), and the liquid outlet (23) is located at a position close to the top of the back side of the purification box (21); sliders (12) are provided on both sides of the purification box (21), and the sliders (12) are slidably embedded in slide grooves (13) provided on the inner wall of the purification channel (1).

2. A water-washed phosphogypsum wastewater purification treatment system according to claim 1, characterized in that: The liquid inlet pipe (22) is slidably connected to the side wall of the purification box (21), and a limiting cylinder (211) is provided at a position of the inner wall of the purification box (21) corresponding to the end of the liquid inlet pipe (22); The end of the liquid inlet pipe (22) located inside the purification box (21) is slidably embedded in the limiting cylinder (211), and the end of the liquid inlet pipe (22) is connected to the inner wall of the limiting cylinder (211) via an elastic member; scattered holes (221) are evenly arranged on the side wall of the liquid inlet pipe (22), and the scattered holes (221) communicate with the interior of the purification chamber (11) and the interior of the liquid inlet pipe (22).

3. A water-washed phosphogypsum wastewater purification treatment system according to claim 2, characterized in that: A control rod (24) is arranged in the middle of the liquid inlet pipe (22); one end of the control rod (24) extends to the inlet of the liquid inlet pipe (22), and a closing plate (241) is arranged to close the inlet of the liquid inlet pipe (22); the other end of the control rod (24) transversely penetrates the middle of the inner wall of the limiting cylinder (211), and is connected to a telescopic device (242) arranged in the inner wall of the limiting cylinder (211).

4. A water-washed phosphogypsum wastewater purification treatment system according to claim 3, characterized in that: Combing rods (243) are evenly arranged on the surface of the control rod (24), the connecting portion between the combing rod (243) and the control rod (24) is made of elastic material, and the end of the combing rod (243) slides through the dispersion holes (221) arranged on the side wall of the liquid inlet pipe (22).

5. A water-washed phosphogypsum wastewater purification treatment system according to claim 4, characterized in that: A dispersion rod (244) is arranged at the end of the combing rod (243), the dispersion rod (244) is distributed in a ring shape around the combing rod (243), and bristles are arranged on the side walls of the dispersion rod (244).

6. A water-washed phosphogypsum wastewater purification treatment system according to claim 5, characterized in that: The control rod (24) is a tubular structure, and the interior of the control rod (24) is communicated with the interior of the limiting cylinder (211) through a liquid filling hole (247); a connecting hole (212) is provided on the outer surface of the side wall of the limiting cylinder (211), the connecting hole (212) is communicated with the interior of the limiting cylinder (211), and a filter is provided at the opening of the connecting hole (212); a piston plate (248) is provided on the end of the control rod (24) embedded in the interior of the limiting cylinder (211), and the piston plate (248) is slidably connected to the inner wall of the limiting cylinder (211); The combing rod (243) and the dispersion rod (244) are both tubular structures, and the control rod (24), the combing rod (243) and the dispersion rod (244) are all connected to each other. Impact holes (245) are evenly arranged on the dispersion rod (244), and the impact holes (245) are connected to the hollow part inside the dispersion rod (244).

7. A water-washed phosphogypsum wastewater purification treatment system according to claim 1, characterized in that: Partitions (25) are evenly arranged in the area between the liquid inlet pipe (22) and the liquid outlet (23) inside the purification box (21); the partitions (25) are arranged vertically, and the gap areas between the partitions (25) form guide channels (26).

8. A water-washed phosphogypsum wastewater purification treatment system according to claim 7, characterized in that: A crushing plate (261) is arranged on the inner wall of the guide channel (26); the crushing plate (261) is arranged in a curved manner, and the crushing plates (261) on both sides of the guide channel (26) are staggered with each other.

9. A water-washed phosphogypsum wastewater purification treatment system according to claim 8, characterized in that: The guide channel (26) comprises an upstream channel (262) and a downstream channel (263), the upstream channel (262) and the downstream channel (263) are interlaced with each other, and the liquid inlet pipe (22) is located at the bottom of the upstream channel (262), and the end of the crushing plate (261) in the upstream channel (262) is bent downward, and the end of the crushing plate (261) in the downstream channel (263) is bent downward.

10. A water-washed phosphogypsum wastewater purification treatment system according to claim 6, characterized in that: A rotating device (246) is provided on the telescopic end of the telescopic device (242), and the output end of the rotating device (246) is connected to the control rod (24).

Images