Ion exchange water production regeneration wastewater pretreatment device

Abstract

The utility model relates to the technical field of wastewater retreatment, and provides an ion exchange water production regeneration wastewater pretreatment device. The ion exchange water-making regenerated wastewater pretreatment device comprises a normal-temperature crystallization reactor, a sedimentation tank, a filtering assembly, an ion exchange assembly and a strong oxidizer. The normal-temperature crystallization reactor is used for crystallizing and separating part of impurities in the regenerated wastewater; the settling pond is communicated with the normal-temperature crystallization reactor and is used for settling and purifying the crystallized regenerated wastewater; the filtering assembly is communicated with the settling pond and is used for filtering the settled and purified regenerated wastewater; the ion exchange assembly is communicated with the filtering assembly and is used for removing calcium and magnesium ions in the regenerated wastewater; the strong oxidizer is communicated with the ion exchange assembly and is used for killing microorganisms in the regenerated wastewater. The device disclosed by the utility model can be used for treating and separating most impurity ions except sodium chloride and sodium sulfate in the ion exchange water-making regeneration wastewater.

Description

TECHNICAL FIELD

[0001] The utility model relates to wastewater reprocessing technical field especially, relates to a kind of ion exchange water regeneration wastewater pretreatment device. BACKGROUND

[0002] Ion exchange water production technology is one of the methods of desalted water in current industrial production, and its water production principle is to use resin ion exchange to adsorb other anions and cations in water, and after saturation, use acid and alkali to desorb and regenerate, and the ion exchange pure water rate is above 95%.

[0003] The water quality of ion exchange water regeneration wastewater is very complex, and needs to be treated before discharge. The existing method is to use the regenerated wastewater to treat blast furnace water slag and power plant fly ash, and the blast furnace water slag, converter slag and power plant fly ash can be used in concrete production.

[0004] However, the content of chlorine ions in ion exchange water regeneration wastewater is too high, which affects the quality of water slag used in lime production. Therefore, it is necessary to treat ion exchange water regeneration wastewater. Before treating the regenerated wastewater, most of the impurity ions in the regenerated wastewater except sodium chloride and sodium sulfate need to be treated, so it is necessary to design an ion exchange water regeneration wastewater pretreatment device. SUMMARY

[0005] The utility model provides a kind of ion exchange water regeneration wastewater pretreatment device to treat most of the impurity ions in ion exchange water regeneration wastewater except sodium chloride and sodium sulfate.

[0006] The utility model provides a kind of ion exchange water regeneration wastewater pretreatment device, which includes:

[0007] Normal temperature crystallization reactor is used to crystallize and separate part of impurities in regenerated wastewater;

[0008] The sedimentation tank is communicated with the normal temperature crystallization reactor, and is used to precipitate and purify the regenerated wastewater after crystallization;

[0009] The filter assembly is communicated with the sedimentation tank, and is used to filter the regenerated wastewater after precipitation and purification;

[0010] The ion exchange assembly is communicated with the filter assembly, and is used to remove calcium and magnesium ions in the regenerated wastewater;

[0011] The strong oxidizer is communicated with the ion exchange assembly, and is used to kill microorganisms in the regenerated wastewater.

[0012] According to the ion exchange water regeneration wastewater pretreatment device provided by the utility model, the sedimentation tank includes:

[0013] A sediment shell is internally provided with a containing cavity for sedimentation of the regenerated wastewater;

[0014] A sediment part is internally provided with a sediment cavity at the top of the containing cavity, and is used for sedimentation of top impurities of the regenerated wastewater;

[0015] A cleaning part is arranged in the sediment shell and is used for cleaning of the sediment at the bottom of the containing cavity;

[0016] An external water receiving groove is arranged in communication with the sediment cavity and is used for guiding the liquid after sedimentation in the sediment cavity;

[0017] A first water production pipe is arranged in communication with the external water receiving groove.

[0018] According to the ion exchange water production regenerated wastewater pretreatment device, the sediment shell comprises:

[0019] A shell body, the containing cavity is arranged inside the shell body, and the top of the shell body is provided with an opening;

[0020] A tooth-shaped weir is arranged at one end of the opening;

[0021] A water distribution groove is arranged outside the tooth-shaped weir, and the bottom end of the water distribution groove is lower than the top end of the tooth-shaped weir;

[0022] A first water inlet pipe is arranged in communication on one side of the water distribution groove away from the tooth-shaped weir;

[0023] A sludge discharge pipe is arranged at the bottom end of the shell body and is used for discharge of the sediment.

[0024] According to the ion exchange water production regenerated wastewater pretreatment device, the sediment part comprises:

[0025] A support plate is arranged at one end of the opening away from the tooth-shaped weir, and the support plate and the inner wall of the shell body form the sediment cavity;

[0026] A plurality of inclined pipes are arranged at the bottom of the sediment cavity, and the bottom end of the inclined pipe is in communication with the containing cavity;

[0027] At least one internal water receiving groove is arranged at the top of the inclined pipe, and the internal water receiving groove is in communication with the external water receiving groove;

[0028] At least one bearing table is arranged at the top end of the support plate.

[0029] According to the ion exchange water production regenerated wastewater pretreatment device, the cleaning part comprises:

[0030] A motor is arranged on the bearing table;

[0031] A rotating rod is connected with the output shaft of the motor, and the bottom end of the rotating rod extends to the bottom end of the cavity;

[0032] A scraper is arranged at the bottom end of the rotating rod, and is used for stirring the precipitate at the bottom end of the cavity, so that the precipitate is discharged through the sludge discharge pipe.

[0033] The ion exchange assembly comprises an exchange shell;

[0034] A first filter plate, a second filter plate and a third filter plate are sequentially and spacedly arranged in the exchange shell from top to bottom, and the first filter plate, the second filter plate and the third filter plate divide the interior of the exchange shell into a first cavity, a second cavity, a third cavity and a fourth cavity;

[0035] The first filter plate is provided with a plurality of first one-side filter caps, the second filter plate is provided with a plurality of double-side filter caps, and the third filter plate is provided with a plurality of second one-side filter caps;

[0036] A weak acid cation resin layer and a white ball resin pressure layer are sequentially arranged in the third cavity from bottom to top, and a gap is arranged between the white ball resin pressure layer and the second filter plate;

[0037] A chelating resin layer and the white ball resin pressure layer are sequentially arranged in the second cavity from bottom to top, and a gap is arranged between the white ball resin pressure layer and the first filter plate;

[0038] The first filter plate is internally provided with at least one layer of porous plate.

[0039] The strong oxidizer comprises:

[0040] The tubular reactor has a water inlet end and a dosing port which are in communication with each other, the water inlet end is in communication with the water supply component, and the dosing port is in communication with the hydrogen peroxide dosing component through an injector;

[0041] The oxidation water tank has a water inlet, a water outlet and an overflow port, the water inlet is in communication with the tubular reactor, the water outlet is communicated with a circulating water pump, the circulating water pump is communicated with a pipeline injector, a negative pressure port of the pipeline injector is communicated with an ozone generator, and an outlet of the pipeline injector is in communication with the water supply component;

[0042] The oxygen release tank is in communication with the overflow port, and is internally provided with a nitrogen explosion gas component, a first outlet of the oxygen release tank is communicated with a lifting pump, and a second outlet of the oxygen release tank is communicated with a tail gas absorber.

[0043] According to the ion exchange water preparation and regenerated wastewater pretreatment device, the column reactor comprises a plurality of straight-through sections and a plurality of arc-shaped connecting pipes, the plurality of straight-through sections are connected in a head-to-tail mode through the arc-shaped connecting pipes.

[0044] The straight-through section comprises a water inlet pipe and a filler reaction pipe connected in sequence, and the filler reaction pipe is provided with at least one medicament feeding pipe in a sleeving mode, and the medicament feeding pipe is communicated with the filler reaction pipe.

[0045] According to the ion exchange water preparation and regenerated wastewater pretreatment device, the filter assembly comprises a precision filter, a self-cleaning filter and an ultrafiltration assembly communicated in sequence.

[0046] The ion exchange water preparation and regenerated wastewater pretreatment device provided by the utility model can promote impurity crystallization through a normal-temperature crystallization reactor, can remove calcium and magnesium ions, heavy metals, total silicon and some organic and inorganic reducing substances, can complete effective precipitation through a sedimentation tank, can achieve fine filtering effect through a filter assembly, can completely remove calcium and magnesium ions through an ion exchange assembly and can inactivate microorganisms through a strong oxidizer. The whole process is closely connected, each link prepares for the next link, and the cooperative work among the assemblies not only solves the problem of excessive impurity ions in regenerated wastewater, but also guarantees the effectiveness and economy of the treatment process. BRIEF DESCRIPTION OF DRAWINGS

[0047] In order to more clearly illustrate the technical scheme in the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description. Obviously, the drawings in the following description are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to the drawings without any creative effort.

[0048] Figure 1 It is the system structure diagram of the ion exchange water preparation and regenerated wastewater pretreatment device provided by the utility model.

[0049] Figure 2 It is the sectional view of the sedimentation tank of the ion exchange water preparation and regenerated wastewater pretreatment device provided by the utility model.

[0050] Figure 3 It is the plan view of the sedimentation tank of the ion exchange water preparation and regenerated wastewater pretreatment device provided by the utility model.

[0051] Figure 4 It is the sectional view of the ion exchange assembly of the ion exchange water preparation and regenerated wastewater pretreatment device provided by the utility model.

[0052] Figure 5It is the strong oxidizer structure schematic view of the ion exchange water preparation waste water pretreatment device provided in the utility model.

[0053] Figure 6 It is the structure schematic view of the ion exchange water preparation waste water pretreatment device provided in the utility model.

[0054] Figure 7 It is the working principle view of the ion exchange water preparation waste water pretreatment device provided in the utility model.

[0055] Reference signs:

[0056] 110: waste water adjusting pool, 120: normal temperature crystallization reactor, 130: sedimentation tank, 140: precision filter, 150: self-cleaning filter, 160: ultrafiltration assembly, 170: ion exchange assembly, 180: strong oxidizer, 190: ultrafiltration water tank,

[0057] 131: sedimentation shell, 1311: shell body, 1312: first water inlet pipe, 1313: water distribution groove, 1314: tooth-shaped weir, 1315: sludge discharge pipe, 132: sedimentation component, 1321: support plate, 1322: inclined pipe, 1323: internal water receiving groove, 1324: bearing table, 133: cleaning component, 1331: motor, 1332: rotating rod, 1333: scraper, 134: external water receiving groove, 135: first water outlet pipe,

[0058] 1711: exchange shell, 1712: first filter plate, 1713: second filter plate, 1714: third filter plate, 1721: first cavity, 1722: second cavity, 1723: third cavity, 1724: fourth cavity, 1731: first one-side filter cap, 1732: two-side filter cap, 1733: second one-side filter cap, 174: second water inlet pipe, 175: baffle, 176: perforated plate, 177: second water outlet pipe, 1781: weak acid cation resin layer, 1782: white ball resin pressure layer, 1783: chelating resin layer,

[0059] 181: tube reactor, 1811: water inlet pipe, 1812: filler reaction tube, 1813: medicament feeding pipe, 1814: arc-shaped connecting pipe, 182: oxidized water tank, 1821: water supply component, 1822: ozone generator, 1823: pipeline ejector, 1824: circulating water pump, 183: oxygen releasing tank, 1831: nitrogen gas explosion component, 1832: lifting pump, 1833: tail gas absorber, 184: ejector, 185: hydrogen peroxide feeding component. DETAILED DESCRIPTION

[0060] The embodiments of the present application will be further described below in conjunction with the drawings and examples. The following examples are used to illustrate the present application, but cannot be used to limit the scope of the present application.

[0061] In the description of the present application, it should be noted that the terms "center", "vertical", "horizontal", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the embodiments of the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0062] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0063] In the embodiments of the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature. The first and second features can be in direct contact, or the first and second features can be in indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0064] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present embodiment. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any suitable manner in any one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples without contradiction.

[0065] The structure and working principle of the present application are described below. Figures 1-7 The structure and working principle of the present application are described below.

[0066] Referring to Figure 1 The ion exchange water regeneration wastewater pretreatment device provided by the present application comprises a normal temperature crystallization reactor 120, a sedimentation tank 130, a filter assembly, an ion exchange assembly 170 and a strong oxidizer 180. Among them, the normal temperature crystallization reactor 120 is used for crystallizing and separating part of impurities in the regenerated wastewater; the sedimentation tank 130 is communicated with the normal temperature crystallization reactor 120, and is used for sedimentation purification of the crystallized regenerated wastewater; the filter assembly is communicated with the sedimentation tank 130, and is used for filtering the sedimentation purified regenerated wastewater; the ion exchange assembly 170 is communicated with the filter assembly, and is used for removing calcium and magnesium ions in the regenerated wastewater; and the strong oxidizer 180 is communicated with the ion exchange assembly 170, and is used for killing microorganisms in the regenerated wastewater.

[0067] Specifically, the regenerated wastewater enters the normal temperature crystallization reactor 120, and by adding alkali, sodium carbonate, crystal seeds and other reagents into the normal temperature crystallization reactor 120, the alkali ensures that the pH value of the whole reactor is greater than 11.5, and calcium carbonate, magnesium hydroxide and metal hydroxide crystals are generated. The normal temperature crystallization reactor 120 is composed of a water inlet circulating part, a chemical reaction center zone, a slag particle discharge system and a sedimentation clarification part. The special crystal growth mechanism design makes the crystal growth rapid and sufficient, and the calcium and magnesium impurity ions are fully reacted, without adding flocculating and precipitating agents (which will increase other impurities), and the crystal is self-screened and discharged outside to complete the treatment. At this stage, more than 97% of calcium and magnesium ions, more than 99% of heavy metals, 100% of total silicon, more than 75% of organic and inorganic reducing substances can be removed.

[0068] The regenerated waste water treated by the normal temperature crystallization reactor 120 flows to the sedimentation tank 130 by the natural flow of the height difference, and in the sedimentation tank 130, the relatively heavy crystal particles are settled to the bottom due to the gravity, so that the primary solid-liquid separation is realized. The waste water purified by the sedimentation continues to flow to the filter assembly, and here, the finer suspended matters are intercepted, and the water quality is further purified.

[0069] Next, the waste water treated by the above treatment flows into the ion exchange assembly 170, and the ion exchange assembly 170 completely removes the heavy metal ions such as calcium and magnesium in the waste water, and this step is crucial for the subsequent treatment, because the existence of the heavy metal ions such as calcium and magnesium can affect the quality of the final water or cause damage to the subsequent equipment. Finally, the strong oxidizer 180 is connected after the ion exchange assembly 170, and the function of the strong oxidizer 180 is to inactivate the microorganisms existing in the waste water by strong oxidation, so as to ensure the biological safety of the treated water.

[0070] The normal temperature crystallization reactor 120 promotes the crystallization of impurities, and can remove more than 97% of calcium and magnesium ions, more than 99% of heavy metals, 100% of total silicon, and more than 75% of organic and inorganic reducing substances. The sedimentation tank 130 can complete effective sedimentation, the filter assembly can achieve fine filtering effect, the ion exchange assembly 170 can completely remove calcium and magnesium ions, and the strong oxidizer 180 can inactivate microorganisms. The whole process is closely connected, and each link prepares for the next link. The cooperative work between the components not only solves the problem of too many impurity ions in the regenerated waste water, but also guarantees the effectiveness and economy of the treatment process.

[0071] In some possible embodiments, the utility model also includes a waste water adjusting tank 110 and an ultrafiltration water tank 190, the waste water adjusting tank 110 is arranged on the previous link of the normal temperature crystallization reactor 120, that is, the regenerated waste water first passes through the waste water adjusting tank 110 and then enters the normal temperature crystallization reactor 120. The waste water adjusting tank 110 has a certain water quantity and water quality balance adjustment effect, is equipped with high and low liquid level meters, and is provided with alkali liquid adding devices, air-driven stirring devices and temperature adjusting cooling water facilities. The cooling water equipment controls the water temperature of the inlet water at a lower level, which is beneficial to the crystallization mechanism of the normal temperature crystallization reactor. The ultrafiltration water tank 190 is arranged on the next link of the strong oxidizer 180, that is, the regenerated waste water treated by the strong oxidizer 180 enters the ultrafiltration water tank 190 for storage, so as to facilitate the treatment of the next link.

[0072] Referring to Figure 2 and Figure 3In some embodiments of the present application, the sedimentation tank 130 includes a sedimentation shell 131, a sedimentation component 132, a cleaning component 133, an external water receiving tank 134, and a first water production pipe 135. The sedimentation shell 131 has a cavity inside for sedimentation of the regenerated wastewater. The sedimentation component 132 has a sedimentation cavity inside and is arranged at the top of the cavity. The sedimentation component 132 is used for sedimentation of the top impurities of the regenerated wastewater. The cleaning component 133 is arranged in the sedimentation shell 131 and is used for cleaning the sediment at the bottom of the cavity. The external water receiving tank 134 is in communication with the sedimentation cavity and is used for guiding the liquid after sedimentation in the sedimentation cavity. The first water production pipe 135 is in communication with the external water receiving tank 134.

[0073] Specifically, the sedimentation shell 131 constitutes the basic framework of the sedimentation tank 130, and has a cavity inside to provide the necessary space for the regenerated wastewater to complete the sedimentation process. In order to improve the sedimentation efficiency, the sedimentation component 132 is arranged at the top of the cavity and has a sedimentation cavity inside, which is specially used for effective sedimentation of the top impurities of the regenerated wastewater entering the sedimentation tank 130. When the wastewater flows into the sedimentation component 132, the lighter impurities will gradually settle in the sedimentation cavity, and the relatively clear water will continue to flow downward into the cavity of the sedimentation shell 131.

[0074] In order to further improve the automation degree and maintenance convenience of the system, the cleaning component 133 is arranged on the sedimentation shell 131 and can periodically or on-demand clean the sediment accumulated at the bottom of the cavity. This design not only helps to maintain the long-term stable operation of the sedimentation tank 130, but also reduces the need for manual intervention and improves the overall operation efficiency.

[0075] In the above structure, the external water receiving tank 134 is in communication with the sedimentation cavity of the sedimentation component 132, and its main function is to guide the liquid after preliminary sedimentation to flow out, ensuring smooth water flow while avoiding the impurities that have not been completely sedimented from being carried out. The first water production pipe 135 is in communication with the external water receiving tank 134 and is responsible for guiding the purified water out of the sedimentation tank 130, thereby effectively improving the water quality.

[0076] The present application effectively solves the problem of difficult simultaneous and efficient treatment of top impurities and bottom sediments in regenerated wastewater through the close cooperation between the components of the sedimentation tank 130. The design of the sedimentation tank 130 ensures that the regenerated wastewater can fully remove the top suspended impurities and timely clean the bottom sediments when flowing through this stage, thereby providing better water conditions for the subsequent treatment steps.

[0077] Referring to Figure 2 and Figure 3In some embodiments of the present application, the sediment shell 131 includes a shell body 1311, a first water inlet pipe 1312, a water distribution groove 1313, a tooth-shaped weir 1314 and a sludge discharge pipe 1315. Among them, the shell body 1311 can be a rectangular structure, and the bottom thereof is funnel-shaped, which facilitates the collection of sediments. The cavity is located inside the shell body 1311, and the top of the shell body 1311 is provided with an opening; the tooth-shaped weir 1314 is arranged at one end of the left side of the opening; the water distribution groove 1313 is arranged outside the tooth-shaped weir 1314, and the bottom end of the water distribution groove 1313 is lower than the top end of the tooth-shaped weir 1314; the first water inlet pipe 1312 is connected to one side of the water distribution groove 1313 away from the tooth-shaped weir 1314; the sludge discharge pipe 1315 is used for discharging sediments, and is connected to the bottom end of the shell body 1311 and located at the lowest part of the funnel structure, which facilitates the discharge of sediments.

[0078] Specifically, the water distribution groove 1313 is arranged outside the tooth-shaped weir 1314, and the bottom end thereof is lower than the top end of the tooth-shaped weir 1314. This height difference enables the regenerated wastewater entering from the first water inlet pipe 1312 to be fully dispersed in the water distribution groove 1313, and the tooth-shaped weir 1314 can withstand the impact of the regenerated wastewater, eliminating the potential energy of the water inlet and uniformly distributing the water. The regenerated wastewater then flows into the cavity through the tooth-shaped weir 1314 in a relatively gentle manner. Such an arrangement helps to reduce the impact of the water inlet on the inside of the cavity, ensuring the stability of the sedimentation process. The first water inlet pipe 1312 is connected to one side of the water distribution groove 1313 away from the tooth-shaped weir 1314, ensuring that the regenerated wastewater entering the system first passes through the distribution of the water distribution groove 1313, thereby achieving uniform water inlet. The sludge discharge pipe 1315 is arranged at the bottom end of the shell body 1311 and is used to discharge the sediments deposited at the bottom of the cavity in a timely manner, preventing the accumulation of sediments from affecting the treatment efficiency.

[0079] In the above structure, the present embodiment solves the problem that suspended substances in the regenerated wastewater are difficult to effectively precipitate. Through the cooperation of the water distribution groove 1313 and the tooth-shaped weir 1314, uniform distribution of the regenerated wastewater is achieved, turbulence is reduced, and rapid settling of larger particles is promoted. At the same time, the presence of the sludge discharge pipe 1315 ensures that sediments do not remain in the bottom of the cavity for a long time, maintaining the continuous and efficient operation of the system. In addition, the opening at the top of the shell body 1311 combined with the design of the tooth-shaped weir 1314 not only simplifies the structure, but also improves the convenience of operation and maintenance, ensuring the smooth progress of the entire sedimentation process.

[0080] Referring to Figure 2 and Figure 3In some embodiments of the utility model, the sedimentation component 132 includes a support plate 1321, a plurality of inclined pipes 1322, at least one internal water collecting groove 1323 and at least one bearing table 1324. Among them, the support plate 1321 is fixedly installed at the end of the opening away from the tooth-shaped weir 1314, that is, is arranged at the right end of the opening, and the top end of the support plate 1321 is flush with the top end of the opening. The shape of the support plate 1321 is not limited, as long as the support plate 1321 and the inner wall of the inclined pipe 1322 form a cavity, which can be used as a sedimentation cavity; a plurality of inclined pipes 1322 are fixedly arranged at the bottom of the sedimentation cavity, the included angle between the inclined pipe 1322 and the bottom end of the inclined pipe 1322 can be 60 degrees, and the bottom end of the inclined pipe 1322 is communicated with the cavity inside the inclined pipe 1322; the internal water collecting groove 1323 is arranged at the top of the inclined pipe 1322, and the internal water collecting groove 1323 is communicated with the external water collecting groove 134; the bearing table 1324 is fixedly or detachably arranged at the top end of the support plate 1321, which is used to install the cleaning component 133.

[0081] In the above structure, when the regenerated wastewater enters the cavity inside the shell body 1311 from the opening of the shell body 1311, preliminary sedimentation is carried out, and the liquid at the top enters the sedimentation cavity through the inclined pipe 1322. According to the principle of shallow layer sedimentation, the suspended matter is deposited on the surface of the inclined pipe 1322, and when the sediment layer accumulates to a certain thickness, it will fall off according to its own gravity to the bottom of the cavity inside the shell body 1311.

[0082] The inclined pipe 1322 is fixedly arranged at the bottom of the sedimentation cavity, and the included angle between the inclined pipe 1322 and the bottom end of the inclined pipe 1322 is 60 degrees. This design increases the effective area of sedimentation, so that the suspended particles in the wastewater can be quickly settled at the bottom of the inclined pipe 1322, and then smoothly discharged through the cavity inside the inclined pipe 1322. This structure not only improves the sedimentation efficiency, but also reduces the possibility of re-stirring of the sediment.

[0083] The internal water collecting groove 1323 is arranged at the top of the inclined pipe 1322, and the internal water collecting groove 1323 is communicated with the external water collecting groove 134. In this way, the relatively clear water after sedimentation treatment can smoothly flow into the external water collecting groove 134, and further flow to the subsequent treatment unit or discharge system. The bearing table 1324 is fixedly or detachably arranged at the top end of the support plate 1321, which can ensure the stable installation of the cleaning component 133, and also provides flexibility for maintenance and replacement, facilitating the cleaning work of the operator as needed.

[0084] Referring to Figure 2 and Figure 3In some embodiments of the present utility model, the cleaning component 133 includes a motor 1331, a rotating rod 1332, and a scraper 1333. The motor 1331 is detachably arranged on the bearing table 1324 by means of bolts or the like. The rotating rod 1332 is connected with the output shaft of the motor 1331 by means of spline connection, and the bottom end of the rotating rod 1332 extends towards the bottom end of the cavity. The scraper 1333 is arranged at the bottom end of the rotating rod 1332 by means of welding or bolt connection, and is used to agitate the sediment at the bottom end of the cavity, so that the sediment is discharged through the mud discharge pipe 1315. It should be noted that the scraper 1333 is adapted to the shape of the inner bottom end of the shell body 1311, so that the scraper 1333 can ensure normal rotation while uniformly agitating the sediment at the inner bottom end of the shell body 1311, and the sediment is gathered towards the mud discharge pipe 1315.

[0085] The design of the cleaning component 133 aims to ensure effective cleaning of the sediment in the sediment shell 131, and prevent the sediment from accumulating at the bottom of the cavity, thereby affecting the processing efficiency and the long-term operation performance of the equipment. The motor 1331 is detachably arranged on the bearing table 1324 by means of bolts or the like. This mounting method not only ensures the stability of the motor 1331, but also facilitates maintenance and replacement.

[0086] The rotating rod 1332 and the output shaft of the motor 1331 are connected by means of spline connection, which ensures the reliability of power transmission. The bottom end of the rotating rod 1332 extends towards the bottom end of the cavity, and transmits the power of the motor 1331 to the bottom of the cavity. The scraper 1333 is arranged at the bottom end of the rotating rod 1332 by means of welding or bolt connection, and is used to agitate the sediment at the bottom end of the cavity. In order to ensure that the scraper 1333 can effectively perform cleaning work, the shape of the scraper 1333 is adapted to the shape of the inner bottom end of the shell body 1311, which not only enables the scraper 1333 to rotate normally, but also uniformly agitates the sediment at the inner bottom end of the shell body 1311, and promotes the sediment to gather towards the mud discharge pipe 1315 and be smoothly discharged.

[0087] In the above structure, the coordinated work between the components of the cleaning component 133 solves the problem of difficult effective removal of the sediment. The motor 1331 provides power, and transmits the rotary motion to the scraper 1333 through the rotating rod 1332, so that the scraper 1333 can agitate the sediment according to the predetermined path. Since the design of the scraper 1333 matches the shape of the inner bottom end of the shell body 1311, it can cover the entire bottom area during rotation, ensuring that all sediment can be agitated and moved towards the mud discharge pipe 1315. This process avoids the long-term accumulation of sediment at the bottom of the cavity, reduces the need for manual cleaning, and improves the automation level and operation stability of the system.

[0088] In addition, through such a design, the cleaning component 133 also ensures that the sedimentation tank 130 can continuously and efficiently operate, maintains a good water treatment effect, and simplifies the maintenance procedure, thereby enhancing the reliability and operation convenience of the system.

[0089] With reference to Figure 4 In some embodiments of the present application, the ion exchange assembly 170 comprises an exchange shell 1711. Specifically, the exchange shell 1711 is in the structure of a round pot, and the inner wall is provided with a rubber anticorrosive layer. The top end of the exchange shell 1711 is provided with a second water production pipe 177, and the bottom end is provided with a second water inlet pipe 174. The second water inlet pipe 174 is located at the top of one end inside the exchange shell 1711 and is provided with a baffle 175.

[0090] The inside of the exchange shell 1711 is sequentially and spacedly provided with a first filter plate 1712, a second filter plate 1713 and a third filter plate 1714 from top to bottom. The first filter plate 1712, the second filter plate 1713 and the third filter plate 1714 divide the inside of the exchange shell 1711 into a first cavity 1721, a second cavity 1722, a third cavity 1723 and a fourth cavity 1724. The first filter plate 1712 is provided with a plurality of first one-side filter caps 1731, the second filter plate 1713 is provided with a plurality of double-side filter caps 1732, and the third filter plate 1714 is provided with a plurality of second one-side filter caps 1733. It should be noted that the first one-side filter cap 1731, the double-side filter cap 1732 and the second one-side filter cap 1733 are all provided with double-flow rate, that is, when flowing downward, the damping device provided therein will make the flow rate smaller, and when flowing upward, the flow rate is not affected.

[0091] The inside of the third cavity 1723 is sequentially provided with a weak acid cation resin layer 1781 and a white ball resin pressure layer 1782 (the thickness of the white ball resin pressure layer 1782 can be about 200 mm) from bottom to top, and a gap (the thickness of the gap can be about 100 mm) is provided between the white ball resin pressure layer 1782 and the second filter plate 1713, which is a space reserved for the expansion of the white ball resin pressure layer 1782. The inside of the second cavity 1722 is sequentially provided with a chelate resin layer 1783 and a white ball resin pressure layer 1782 (the thickness of the white ball resin pressure layer 1782 can be about 200 mm) from bottom to top, and a gap (the thickness of the gap can be about 100 mm) is provided between the white ball resin pressure layer 1782 and the first filter plate 1712, which is a space reserved for the expansion of the white ball resin pressure layer 1782. The inside of the first filter plate 1712 is provided with at least one layer of porous plate 176.

[0092] In this embodiment, first, the regenerated wastewater enters the bottom of the exchange shell 1711 through the second water inlet pipe 174, and the potential energy of the water inlet is eliminated by the baffle 175, so that the water inlet is uniformly distributed on the third filter plate 1714.

[0093] Subsequently, the wastewater flows upward, enters the third cavity 1723 through the second single-sided filter cap 1733, and begins to contact the weak acid cation resin layer 1781. The weak acid cation resin layer 1781 is used to adsorb the calcium and magnesium ions in the water in the amount of alkalinity, and to perform a preliminary ion exchange process. As the wastewater continues to rise, it passes through the white ball resin pressure layer 1782, which is located above the weak acid cation resin layer 1781 and has a gap between the second filter plate 1713. The main function of the white ball resin pressure layer 1782 is to maintain the stability and integrity of the weak acid cation resin layer 1781, preventing the loss of resin particles.

[0094] The wastewater then flows into the second cavity 1722 through the double-sided filter cap 1732, and further passes through the chelating resin layer 1783. This layer performs a more in-depth adsorption and exchange of calcium and magnesium heavy metal ions. Similarly, after passing through the chelating resin layer 1783, the wastewater again encounters the white ball resin pressure layer 1782, which also has a gap between the first filter plate 1712 to ensure smooth water flow and stable resin layer.

[0095] As the wastewater continues to move upward, it enters the first cavity 1721 through the first single-sided filter cap 1731, and the water flow path is affected by the porous plate 176 inside the first filter plate 1712. The porous plate 176 eliminates the potential energy of the wastewater, making it more evenly distributed. Finally, it flows out from the second water production pipe 177, completing the entire treatment process.

[0096] Referring to Figure 4 In some embodiments of the present application, the strong oxidizer 180 includes a tube reactor 181, an oxidizing water tank 182, and an oxygen release tank 183. The tube reactor 181 has a water inlet end and a dosing port in communication with each other, the water inlet end is in communication with the water supply component 1821, and the dosing port is in communication with the hydrogen peroxide dosing component 185 through the injector 184; the oxidizing water tank 182 has a water inlet, a water outlet, and an overflow port, the water inlet is in communication with the tube reactor 181, the water outlet is communicated with the circulating water pump 1824, the circulating water pump 1824 is communicated with the pipeline injector 1823, the negative pressure port of the pipeline injector 1823 is communicated with the ozone generator 1822, and the outlet of the pipeline injector 1823 is communicated with the water supply component 1821; the oxygen release tank 183 is communicated with the overflow port, and is internally provided with a nitrogen gas explosion component 1831, a first outlet of the oxygen release tank 183 is communicated with a lifting pump 1832, and a second outlet of the oxygen release tank 183 is communicated with a tail gas absorber 1833.

[0097] The design of the strong oxidizer 180 aims to achieve effective inactivation of microorganisms and removal of harmful substances in the regenerated wastewater through a series of closely connected components, and to ensure the biological safety of the treated water. The tubular reactor 181 as the front-end processing unit of the strong oxidizer 180 has a water inlet end and a dosing port in communication with each other. The water inlet end is in communication with the water supply component 1821 for introducing the wastewater to be treated. The dosing port is in communication with the hydrogen peroxide dosing component 185 through the injector 184, ensuring that the hydrogen peroxide can be uniformly added to the wastewater flowing through the tubular reactor 181, starting the preliminary oxidation process. At the same time, oxidation-reduction potential measuring instruments are installed at different parts of the tubular reactor 181 to adjust the dosing amount of hydrogen peroxide and ozone according to the oxidation potential.

[0098] The wastewater flowing out of the tubular reactor 181 then enters the oxidation tank 182, which has a water inlet, a water outlet and an overflow. The water inlet is in direct communication with the tubular reactor 181. The wastewater continues to undergo oxidation reactions in the oxidation tank 182 to further destroy residual organic matter and microorganisms. In order to enhance the oxidation effect, the water outlet is connected to a circulating water pump 1824, which pumps part of the treated water back into the pipeline injector 1823, where the ozone generated by the ozone generator 1822 is sucked in by negative pressure. The water after the enhanced oxidation treatment returns to the tubular reactor 181 again, forming a closed loop system, ensuring the sufficiency and continuity of the oxidation reaction.

[0099] The regenerated wastewater treated by the tubular reactor 181 enters the oxygen release tank 183 through the overflow. The oxygen release tank 183 is provided with a nitrogen gas explosion component 1831. After the explosion, the gas mixed with the remaining ozone enters the tail gas absorber 1833, and the gas after absorbing the ozone is discharged into the atmosphere. The wastewater after releasing the ozone is supplied to the next process by the lifting pump 1832.

[0100] Referring to Figure 5 In some embodiments of the present application, the tubular reactor 181 includes a plurality of straight sections and a plurality of arc-shaped connecting pipes 1814, and the plurality of straight sections are connected end to end through the arc-shaped connecting pipes 1814. The straight section includes a water inlet pipe 1811 and a filler reaction pipe 1812 connected in sequence, and the filler reaction pipe 1812 is sleeved with at least one reagent feeding pipe 1813 in communication with the filler reaction pipe 1812.

[0101] Specifically, the plurality of straight sections are connected end to end through the arc-shaped connecting pipes 1814 to form a flow channel, and the water inlet pipes 1811 at both ends are in communication with the water supply component 1821 and the water inlet of the oxidation tank 182, respectively, and the reagent feeding pipe 1813 is in communication with the dosing port through the injector 184.

[0102] Referring to Figure 1In some embodiments of the utility model, the filter assembly comprises a precision filter 140, a self-cleaning filter 150 and an ultrafiltration assembly 160 which are sequentially communicated. The precision filter 140 is communicated with the sedimentation tank 130, and the ultrafiltration assembly 160 is communicated with the ion exchange assembly 170.

[0103] Specifically, the precision filter 140 can adopt a comet body fiber filter, which has the characteristics of high pollution interception depth, strong pollution carrying capacity, high filtration precision, more than 85% of organic matter interception capacity, complete backwashing, good recovery of filter material filtration capacity and the like.

[0104] The self-cleaning filter 150 is composed of a cylinder, a filter screen, a filter screen support structure, a filter cleaning device, a control system, a differential pressure switch, a blowdown valve and the like. A 100um high-precision filter core is adopted, the filter control system satisfies long-term continuous work, the filter screen can be automatically cleaned, and the cleaning is complete.

[0105] The ultrafiltration assembly 160 can adopt a reverse osmosis protection device, which is used for intercepting small suspended solids, colloids and macromolecular organic matters in water, so that the effluent SDI is less than or equal to 3, the requirements of the reverse osmosis system on the SDI value and suspended solids and the like are satisfied, the cleaning period of the reverse osmosis system is prolonged, and the service life is prolonged. The membrane element adopts a Japan Asahi UNA-620A ultrafiltration membrane, and the absolute filtration precision can reach 0.1um. An online backwashing device, a chemical cleaning device and a water production rate of 90% are arranged. The backwashing water is provided with an oxidant NaClO metering device, and the addition standard is 10-15mg / L (calculated by effective chlorine).

[0106] Referring to Figure 7In some embodiments of the present application, a wastewater supply pump is further arranged between the wastewater conditioning tank 110 and the normal-temperature crystallization reactor 120. The wastewater supply pump is further communicated with a sludge concentration assembly, which is used to concentrate the sludge removed by the supply pump, and then the concentrated liquid is supplied to the wastewater conditioning tank 110, and the remaining sludge is transported to a sludge plant. The normal-temperature crystallization reactor 120 can be supplied with air and crystal seeds in the working process, and the crystal seeds can be NaOH and Na2CO3. An ultrafiltration supply pump is arranged between the sedimentation tank 130 and the filtration assembly. A Na weak acid resin layer is further arranged between the filtration assembly and the ion exchange assembly 170. The ion exchange assembly 170 is appropriately added with a regeneration acid in the working process. The strong oxidizer 180 is appropriately added with air in the working process. The strong oxidizer 180 is communicated with the ultrafiltration water tank 190, and the ultrafiltration water tank 190 is further provided with a first backflow pipe and a second flow pipe. The first backflow pipe is communicated to the ultrafiltration assembly 160, and the backflow pipe is further provided with a backwashing pump. The second flow pipe is communicated to the precision filter 140, and the second flow pipe is provided with a cleaning water pump. The precision filter 140 needs to be added with HCL in the working process. The ultrafiltration assembly 160 needs to be added with cleaning agent, HCL, NaOH and NaCLO in the working process.

[0107] The method for using the ion exchange water production and regeneration wastewater pretreatment device comprises the following steps:

[0108] S1, crystallizing and separating part of impurities in the regeneration wastewater by the normal-temperature crystallization reactor 120;

[0109] S2, precipitating and purifying the crystallized regeneration wastewater by the sedimentation tank 130;

[0110] S3, filtering the precipitated and purified regeneration wastewater by the filtration assembly;

[0111] S4, removing calcium and magnesium ions in the regeneration wastewater by the ion exchange assembly 170;

[0112] S5, killing microorganisms in the regeneration wastewater by the strong oxidizer 180.

[0113] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacements for part of the technical features. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. An ion exchange water production regeneration waste water pretreatment apparatus, characterized by, The application relates to a regeneration wastewater treatment device. The device comprises: a normal-temperature crystallization reactor (120) for crystallizing and separating part of impurities in regeneration wastewater; a sedimentation tank (130) in communication with the normal-temperature crystallization reactor (120) and used for purifying the crystallized regeneration wastewater; a filter assembly in communication with the sedimentation tank (130) and used for filtering the purified regeneration wastewater; an ion exchange assembly (170) in communication with the filter assembly and used for removing calcium and magnesium ions in the regeneration wastewater; 2. The ion exchange water treatment apparatus according to claim 1, wherein a strong oxidizer (180) in communication with the ion exchange assembly (170) and used for killing microorganisms in the regeneration wastewater. The sedimentation tank (130) comprises: a sedimentation shell (131) internally provided with a containing cavity for sedimentation of the regeneration wastewater; a sedimentation component (132) internally provided with a sedimentation cavity at the top of the containing cavity and used for sedimentation of top impurities in the regeneration wastewater; a cleaning component (133) arranged in the sedimentation shell (131) and used for cleaning sediment at the bottom of the containing cavity; an external water receiving groove (134) arranged in communication with the sedimentation cavity and used for guiding liquid in the sedimentation cavity after sedimentation; 3. The ion exchange service water regenerant wastewater pretreatment device of claim 2, wherein, a first water production pipe (135) arranged in communication with the external water receiving groove (134). The sedimentation shell (131) comprises: a shell body (1311) internally provided with the containing cavity, and the top of the shell body (1311) is provided with an opening; a tooth-shaped weir (1314) arranged at one end of the opening; a water distribution groove (1313) arranged outside the tooth-shaped weir (1314) and having a bottom end lower than a top end of the tooth-shaped weir (1314); a first water inlet pipe (1312) arranged in communication with the water distribution groove (1313) on a side away from the tooth-shaped weir (1314); 4. The ion exchange service water regeneration waste water pretreatment apparatus according to claim 3, characterized by a sludge discharge pipe (1315) arranged at the bottom end of the shell body (1311) and used for discharging sediment. The sedimentation component (132) comprises: a support plate (1321) arranged at one end of the opening away from the tooth-shaped weir (1314), and the support plate (1321) and the inner wall of the shell body (1311) form the sedimentation cavity; a plurality of inclined pipes (1322) arranged obliquely at the bottom of the sedimentation cavity and having bottom ends in communication with the containing cavity; at least one internal water receiving groove (1323) arranged at the top of the inclined pipes (1322) and in communication with the external water receiving groove (134); 5. The ion exchange service water regeneration waste water pretreatment apparatus according to claim 4, characterized by at least one bearing table (1324) arranged at the top end of the support plate (1321). The cleaning component (133) comprises: a motor (1331) arranged on the bearing table (1324); a rotating rod (1332) connected with the output shaft of the motor (1331) and having a bottom end extending to the bottom end of the containing cavity. A scraper (1333) is arranged at the bottom end of the rotating rod (1332) to agitate the precipitate at the bottom end of the cavity to discharge the precipitate through the sludge discharge pipe (1315).

6. The ion exchange service water regenerant wastewater pretreatment device of claim 1, wherein, The ion exchange assembly (170) comprises an exchange shell (1711); The inside of the exchange shell (1711) is sequentially and spacedly provided with a first filter plate (1712), a second filter plate (1713) and a third filter plate (1714) from top to bottom, and the first filter plate (1712), the second filter plate (1713) and the third filter plate (1714) divide the inside of the exchange shell (1711) into a first cavity (1721), a second cavity (1722), a third cavity (1723) and a fourth cavity (1724); The first filter plate (1712) is provided with a plurality of first one-side filter caps (1731), the second filter plate (1713) is provided with a plurality of two-side filter caps (1732), and the third filter plate (1714) is provided with a plurality of second one-side filter caps (1733); The inside of the third cavity (1723) is sequentially provided with a weak acid cation resin layer (1781) and a white ball resin pressure layer (1782) from bottom to top, and a gap is arranged between the white ball resin pressure layer (1782) and the second filter plate (1713); The inside of the second cavity (1722) is sequentially provided with a chelating resin layer (1783) and the white ball resin pressure layer (1782) from bottom to top, and a gap is arranged between the white ball resin pressure layer (1782) and the first filter plate (1712); The inside of the first filter plate (1712) is provided with at least one layer of porous plate (176).

7. The ion exchange service water regeneration waste water pretreatment apparatus according to claim 1, characterized by, The strong oxidizer (180) comprises: A tubular reactor (181) having a water inlet end and a dosing port in communication with each other, the water inlet end being in communication with a water supply component (1821), and the dosing port being in communication with a hydrogen peroxide dosing component (185) through an injector (184); An oxidizing water tank (182) having a water inlet, a water outlet and an overflow, the water inlet being in communication with the tubular reactor (181), the water outlet being in communication with a circulating water pump (1824), the circulating water pump (1824) being in communication with a pipeline injector (1823), a negative pressure port of the pipeline injector (1823) being in communication with an ozone generator (1822), and an outlet of the pipeline injector (1823) being in communication with the water supply component (1821); An oxygen releasing tank (183) in communication with the overflow and internally provided with a nitrogen gas explosion component (1831), a first outlet of the oxygen releasing tank (183) being in communication with a booster pump (1832), and a second outlet of the oxygen releasing tank (183) being in communication with a tail gas absorber (1833).

8. The ion exchange service water regeneration waste water pretreatment apparatus according to claim 7, characterized by The tubular reactor (181) comprises a plurality of straight sections and a plurality of arc-shaped connecting pipes (1814), and the plurality of straight sections are connected in a head-to-tail manner through the arc-shaped connecting pipes (1814). The direct flow section comprises a water inlet pipe (1811) and a filler reaction pipe (1812) connected in sequence, the filler reaction pipe (1812) is sleeved with at least one medicament injection pipe (1813), and the medicament injection pipe (1813) communicates with the filler reaction pipe (1812).

9. The ion exchange water treatment apparatus according to any one of claims 1 to 8, wherein The filter assembly comprises a precision filter (140), a self-cleaning filter (150) and an ultrafiltration assembly (160) communicated in sequence.

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