CN115180749A - Heavy metal wastewater treatment equipment - Google Patents

Heavy metal wastewater treatment equipment Download PDF

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Publication number
CN115180749A
CN115180749A CN202211036340.0A CN202211036340A CN115180749A CN 115180749 A CN115180749 A CN 115180749A CN 202211036340 A CN202211036340 A CN 202211036340A CN 115180749 A CN115180749 A CN 115180749A
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China
Prior art keywords
dosing
heavy metal
centrifugal
adsorption
defoaming
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CN202211036340.0A
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Chinese (zh)
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CN115180749B (en
Inventor
陈星�
孙晓艳
路长远
黄帅
郝瑞然
许俊丽
孙书荃
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Yellow River Conservancy Technical Institute
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Yellow River Conservancy Technical Institute
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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00—Multistage treatment of water, waste water or sewage
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/20—Treatment of water, waste water, or sewage by degassing, i.e. liberation of dissolved gases
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/28—Treatment of water, waste water, or sewage by sorption
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/38—Treatment of water, waste water, or sewage by centrifugal separation
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/5281—Installations for water purification using chemical agents
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/20—Heavy metals or heavy metal compounds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00—General aspects of water treatment
    • C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

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  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Water Treatment By Sorption (AREA)
  • Removal Of Specific Substances (AREA)
  • Physical Water Treatments (AREA)

Abstract

The invention discloses heavy metal wastewater treatment equipment which comprises a liquid inlet mechanism, a defoaming mechanism, a dosing mechanism, an adsorption mechanism and a centrifugal separation mechanism which are sequentially connected along the vertical direction, wherein the centrifugal separation mechanism is connected with a driving mechanism, the centrifugal separation mechanism is connected with an installation vertical rod, the installation vertical rod extends out of the upper end of the defoaming mechanism from the centrifugal separation mechanism along the vertical direction, surface defoaming blades and stirring blades are respectively installed on the installation vertical rod, the surface defoaming blades are positioned above the defoaming mechanism, the lower surfaces of the surface defoaming blades are close to the upper surface of the defoaming mechanism, and the stirring blades are positioned between the dosing mechanism and the adsorption mechanism. The invention improves the treatment rate of the heavy metal wastewater, so that the purified water meets the discharge standard. The invention is suitable for treating heavy metal wastewater generated by small and medium-sized enterprises.

Description

Heavy metal wastewater treatment equipment
Technical Field
The invention belongs to the technical field of sewage treatment, and particularly relates to heavy metal wastewater treatment equipment.
Background
At present, in production and life, heavy metal pollution can also happen, the heavy metal pollution mainly comes from mining, waste gas emission, sewage irrigation and heavy metal overproof products, the heavy metal not only pollutes soil and water quality in the environment, but also can cause irreversible damage to human bodies, and therefore the heavy metal pollution needs to be treated. At present, a relatively serious pollution mode is heavy metal water pollution, heavy metal wastewater needs to be treated and purified, so that heavy metals are separated from the wastewater, and the purpose of directly discharging the wastewater after purification is further achieved. The existing heavy metal wastewater purification process is complex, generally passes through a filter tank, a PH adjusting tank, a flocculation tank, a sedimentation tank and a purification tank, most of the existing heavy metal wastewater purification processes only aim at large-scale enterprises, the wastewater volume of the enterprises is large, the heavy metal wastewater purification system is adopted to purify heavy metal wastewater, the speed is low, and the existing heavy metal wastewater purification process is not suitable for treatment of heavy metal wastewater in small and medium-scale enterprises.
Disclosure of Invention
The invention provides heavy metal wastewater treatment equipment which is suitable for treating heavy metal wastewater generated by small and medium-sized enterprises, and can improve the treatment rate of the heavy metal wastewater, so that the purified water meets the discharge standard.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the utility model provides a heavy metal waste water treatment equipment, includes along vertical feed liquor mechanism, defoaming mechanism, the mechanism of offeing medicine, adsorption apparatus structure and the centrifugal separation mechanism that connects gradually downwards, centrifugal separation mechanism is connected with actuating mechanism, and centrifugal separation mechanism is connected with an installation montant, the installation montant is from centrifugal separation mechanism department along the vertical upper end that upwards extends defoaming mechanism, in install surface defoaming blade and stirring vane on the installation montant respectively, surface defoaming blade is located defoaming mechanism top, and the lower surface of surface defoaming blade presses close to the upper surface that defoams the mechanism, stirring vane is located between the mechanism of offeing medicine and the adsorption apparatus structure.
Furthermore, the centrifugal separation mechanism comprises an outer assembly shell, a deslagging pipe is constructed at the lower end of the outer assembly shell, a centrifugal deslagging unit is installed in the outer assembly shell, a slag collecting cavity is formed between the centrifugal deslagging unit and the outer assembly shell, the deslagging pipe is communicated with the lower end of the slag collecting cavity, and the centrifugal deslagging unit is connected with the driving mechanism.
Furthermore, the centrifugal deslagging unit comprises a centrifugal disc arranged in the outer assembly shell, a rotational flow liquid inlet disc is arranged in the centrifugal disc, the radial length of the rotational flow liquid inlet disc gradually expands downwards along the vertical direction, a liquid inlet channel is formed at the lower end of the rotational flow liquid inlet disc and at the position corresponding to the centrifugal disc, a drainage hopper is arranged in the rotational flow liquid inlet disc, a liquid guide edge is constructed at the upper end of the drainage hopper, an overflowing channel is formed at the position corresponding to the rotational flow liquid inlet disc along the liquid guide edge, drainage blades are uniformly constructed in the drainage hopper along the circumferential direction of the drainage blades, each drainage blade is fixedly connected with an installation vertical rod, a water outlet pipe extending out of the lower end of the outer assembly shell is constructed at the lower end of the drainage hopper, and the water outlet pipe is connected with a driving mechanism.
Furthermore, the centrifugal disc comprises a water inlet sleeve positioned at the upper part and a separating cylinder positioned at the lower part, the radial length of the separating cylinder is gradually reduced downwards from the position of the water inlet sleeve, and the lower end of the separating cylinder is connected with a water outlet pipe; a plurality of swirl vanes are uniformly constructed on the outer surface of the swirl liquid inlet disc along the circumferential direction of the swirl liquid inlet disc, and a pressurizing flow channel is formed between every two adjacent swirl vanes; the upper end of the drainage hopper is provided with a drainage cylinder, the upper end of the drainage cylinder is formed by the drainage edge, and the drainage blade is positioned in the drainage cylinder.
Further, an assembly hole in the shape of a regular polygon is formed in the center of the upper end of the rotational flow liquid inlet disc, a cylindrical structure with a cross section in the shape of a regular polygon is constructed at the joint of the installation vertical rod and the rotational flow liquid inlet disc, a limit flange is constructed on the installation vertical rod, the upper end of the limit flange supports the center of the lower end of the adsorption mechanism, a hard spring is sleeved on the installation vertical rod, and the two ends of the hard spring are connected with the lower end of the limit flange and the upper end of the rotational flow liquid inlet disc respectively.
Furthermore, the driving mechanism comprises a driving motor with a driving wheel mounted on an output shaft, the water outlet pipe is provided with a driven wheel, and the driving wheel and the driven wheel are in transmission connection through a transmission belt.
Furthermore, the lower end of the centrifugal disc is uniformly provided with the slag scraping plates along the circumferential direction, each slag scraping plate extends along the radial direction of the centrifugal disc, and the lower end of each slag scraping plate is in contact with the inner side bottom wall of the outer assembly shell.
Further, the adsorption mechanism comprises an outer installation cylinder, an adsorption unit is installed in the outer installation cylinder, and the adsorption unit comprises a primary adsorption layer, a secondary adsorption layer and a tertiary adsorption layer which are sequentially arranged downwards in the vertical direction; the quantity of the adsorption units is at least one, when the quantity of the adsorption units is at least two, an installation seat is assembled in the outer installation cylinder, a pore plate is constructed at the lower end of the outer installation cylinder, a plurality of installation cavities are constructed on the installation seat, each adsorption unit is installed in the corresponding installation cavity, and the lower end of each adsorption unit is abutted to the upper end face of the pore plate.
Furthermore, a primary upper liquid passing net is arranged at the position, closed by the periphery, of the upper end face of the primary adsorption layer at the center, and a primary lower liquid passing net is arranged at the position, closed by the periphery, of the lower end face of the primary adsorption layer at the center; a secondary upper liquid passing net is arranged at the position of the periphery of the upper end face of the secondary adsorption layer, which is closed at the center, and a secondary lower liquid passing net is arranged at the position of the periphery of the lower end face of the secondary adsorption layer, which is closed at the center; the center of the upper end face of the third-stage adsorption layer is sealed, and the periphery of the upper end face of the third-stage adsorption layer is provided with a third-stage upper liquid passing net, and the periphery of the lower end face of the third-stage adsorption layer is sealed, and the center of the lower end face of the third-stage adsorption layer is provided with a third-stage lower liquid passing net.
Further, a reaction area is formed between the defoaming mechanism and the adsorption mechanism, the dosing mechanism is disposed at the upper portion of the reaction area, the dosing mechanism includes an upper dosing ring pipe, a middle dosing ring pipe and a lower dosing ring pipe which are sequentially disposed along the vertical direction, dosing holes are uniformly formed at the lower ends of the upper dosing ring pipe, the middle dosing ring pipe and the lower dosing ring pipe, the dosing range of the middle dosing ring pipe is at the periphery of the reaction area, the dosing ranges of the upper dosing ring pipe and the lower dosing ring pipe are at the center of the reaction area, and boundaries of the dosing ranges of the upper dosing ring pipe, the middle dosing ring pipe and the lower dosing ring pipe are overlapped or staggered with each other; the upper dosing ring pipe is communicated with the middle dosing ring pipe through a plurality of first connecting pipes, the middle dosing ring pipe is communicated with the lower dosing ring pipe through a plurality of second connecting pipes, the middle dosing ring pipe is communicated with the dosing main pipe, the dosing main pipe is connected with an outlet of the dosing pump, and an inlet of the dosing pump is communicated with the dosing barrel.
Due to the adoption of the structure, compared with the prior art, the invention has the technical progress that: heavy metal wastewater enters a liquid inlet mechanism after primary filtration, a medicament is injected through a pH adjusting pipe to adjust the pH value of the heavy metal wastewater, then the heavy metal wastewater enters a defoaming mechanism to be defoamed, the defoamed wastewater enters an area between an adsorption mechanism and the defoaming mechanism, a dosing mechanism is positioned in the area, a heavy metal trapping agent is uniformly put into the area through the dosing mechanism, at the moment, a vertical rod is installed to rotate under the driving of a driving mechanism, a surface defoaming blade and a stirring blade synchronously rotate, the surface defoaming blade eliminates foam staying on the defoaming mechanism in a rotating manner, the stirring blade stirs the wastewater between the adsorption mechanism and the defoaming mechanism, the heavy metal trapping agent fully chelates heavy metal ions in the wastewater, flocculent precipitates which are insoluble, low in water content and easy to filter and remove are rapidly generated in a short time, then the wastewater carries the flocculent precipitates to pass through the adsorption mechanism, the adsorption mechanism adsorbs most of the flocculent precipitates, the water containing the flocculent precipitates which are not adsorbed enters a centrifugal separation mechanism, the centrifugal separation mechanism is used for carrying out high-speed centrifugal separation on the part of the water, and the remaining flocculent precipitates are separated to accord with the obtained purified water and are discharged and tested; in conclusion, the invention can purify heavy metal wastewater at high speed, has simple and compact whole flow, is suitable for the treatment of heavy metal wastewater generated by small and medium-sized enterprises, improves the treatment rate of heavy metal wastewater, enables the purified water to meet the discharge standard and realizes the purpose of improving the purification effect of heavy metal wastewater.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.
In the drawings:
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a cross-sectional view of an axial structure of an embodiment of the present invention;
FIG. 3 is an enlarged view of the portion A in FIG. 2;
FIG. 4 is an enlarged view of the portion B in FIG. 2;
FIG. 5 is a schematic structural diagram of a centrifugal slag removal unit according to an embodiment of the present invention;
FIG. 6 is a schematic view of another angle structure of the centrifugal slag removal unit according to the embodiment of the present invention;
FIG. 7 is a schematic structural view of a vortex liquid inlet tray in the centrifugal slag removal unit according to the embodiment of the invention;
FIG. 8 is a schematic structural view of the connection of a drainage bucket, a drainage blade, a mounting vertical rod and a water outlet pipe in the centrifugal slag removal unit according to the embodiment of the invention;
FIG. 9 is a schematic structural diagram of the foam removing mechanism according to the embodiment of the present invention after being disassembled;
FIG. 10 is a schematic view of a configuration of a drug delivery mechanism according to an embodiment of the present invention;
FIG. 11 is a schematic structural diagram of an adsorption mechanism according to an embodiment of the present invention;
fig. 12 is a schematic structural view illustrating a split structure of the primary adsorption layer, the secondary adsorption layer and the tertiary adsorption layer of the adsorption mechanism in fig. 11 after the outer mounting cylinder is removed;
FIG. 13 is a schematic view of the structure of FIG. 12 from another angle;
FIG. 14 is a partially disassembled schematic view of a second adsorption mechanism according to an embodiment of the present invention;
FIG. 15 is a schematic structural view of a third adsorption mechanism according to an embodiment of the present invention, after partial detachment;
fig. 16 is a schematic structural view of a fourth adsorption mechanism according to an embodiment of the present invention after partial detachment.
Labeling components: 100-liquid inlet pipe, 101-splash-proof hopper, 102-PH adjusting pipe, 200-defoaming reaction kettle, 201-kettle body, 202-defoaming net layer, 2021-upper pressing plate, 2022-defoaming net layer body, 2023-connecting screw rod, 203-bottom net plate, 300-adsorption mechanism, 301-outer installation barrel, 302-primary adsorption layer, 3021-primary adsorption layer body, 3022-primary upper liquid passing net, 3023-primary lower liquid passing net, 303-secondary adsorption layer, 3031-secondary adsorption layer body, 3032-secondary upper liquid passing net, 3033-secondary lower liquid passing net, 304-tertiary adsorption layer, 3041-tertiary adsorption layer body, 3042-tertiary upper liquid passing net, 3043-tertiary lower liquid passing net, 305-installation seat, 306-installation cavity, 307-adsorption unit, 308-primary cylinder, 309-secondary cylinder, 310-tertiary cylinder, 311-primary fan-shaped adsorption body, 312-secondary fan-shaped adsorption body, 313-PH adjusting pipe, 200-cyclone adsorption plate, 403-upper limit adsorption plate, 403-suction mechanism, 401-suction plate, 401-vortex flow guide plate, 401-400-vortex flow guide plate, 402-discharge mechanism, 402-upper limit suction plate, 401-suction plate, 402-discharge mechanism, 401-vortex flow guide plate, 402-discharge mechanism, and discharge mechanism, 505-driving belt, 600-supporting frame, 601-supporting base, 602-first supporting rod, 603-second supporting rod, 604-connecting vertical rod, 605-third supporting rod, 700-dosing mechanism, 701-dosing header pipe, 702-middle dosing ring pipe, 703-upper dosing ring pipe, 704-lower dosing ring pipe, 705-first connecting pipe, 706-second connecting pipe, 707-connecting rod, 800-mounting vertical rod, 801-defoaming blade, 802-stirring blade, 803-limiting flange and 804-hard spring.
Detailed Description
Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for purposes of illustration and explanation only and are not intended to limit the present invention.
The invention discloses heavy metal wastewater treatment equipment, which comprises a liquid inlet mechanism, a defoaming mechanism, a dosing mechanism 700, an adsorption mechanism 300 and a centrifugal separation mechanism 400 as shown in figures 1-16, wherein the liquid inlet mechanism, the defoaming mechanism, the dosing mechanism 700, the adsorption mechanism 300 and the centrifugal separation mechanism 400 are sequentially connected downwards along the vertical direction and are mutually communicated, and the centrifugal separation mechanism 400 is connected with a driving mechanism 500. The centrifugal separation mechanism 400 of the present invention is connected to a mounting vertical rod 800, the mounting vertical rod 800 extends upward in the vertical direction, and the mounting vertical rod 800 extends from the centrifugal separation mechanism 400 to the upper end of the defoaming mechanism. A surface defoaming blade 801 and a stirring blade 802 are respectively arranged on the mounting vertical rod 800, wherein the surface defoaming blade 801 is positioned above the defoaming mechanism, and the lower surface of the surface defoaming blade 801 is close to the upper surface of the defoaming mechanism; the stirring blade 802 is located between the dosing mechanism 700 and the adsorption mechanism 300, and is used for stirring the heavy metal wastewater between the dosing mechanism 700 and the adsorption mechanism 300, so that heavy metal ions in the heavy metal wastewater are chelated with the heavy metal scavenger to form flocculent precipitates. The working principle and the advantages of the invention are as follows: heavy metal wastewater enters a liquid inlet mechanism after primary filtration, a medicament is injected through a pH adjusting pipe 102 to adjust the pH value of the heavy metal wastewater, then the heavy metal wastewater enters a defoaming mechanism to be defoamed, the defoamed wastewater enters a region between an adsorption mechanism 300 and the defoaming mechanism, a dosing mechanism 700 is positioned in the region, a heavy metal trapping agent is uniformly thrown into the region through the dosing mechanism 700, at the moment, a vertical rod 800 is installed to rotate under the driving of a driving mechanism 500, so that a surface defoaming blade 801 and a stirring blade 802 synchronously rotate, the surface defoaming blade 801 eliminates foam staying on the defoaming mechanism in a rotating manner, the stirring blade 802 stirs the wastewater between the adsorption mechanism 300 and the defoaming mechanism, the heavy metal trapping agent fully chelates heavy metal ions in the wastewater, insoluble floccule precipitates with low water content and easy to filter and remove are rapidly generated in a short time, then the floccule precipitates are carried by the adsorption mechanism 300, the adsorption mechanism 300 adsorbs most floccule precipitates, the water containing the floccule precipitates enter a centrifugal separation mechanism 400, and then the floccule precipitates are centrifugally separated at a high speed, and the residual purified water is sampled; in conclusion, the invention can purify heavy metal wastewater at high speed, has simple and compact whole flow, is suitable for the treatment of heavy metal wastewater generated by small and medium-sized enterprises, improves the treatment rate of heavy metal wastewater, enables the purified water to meet the discharge standard and realizes the purpose of improving the purification effect of heavy metal wastewater.
As a preferred embodiment of the present invention, as shown in fig. 1-2, the liquid inlet mechanism includes a liquid inlet pipe 100, a splash-proof bucket 101 is configured at the lower end of the liquid inlet pipe 100, the large diameter end of the splash-proof bucket 101 is connected to the upper end of the defoaming mechanism, a PH adjusting pipe 102 is connected to the liquid inlet pipe 100, a chemical agent enters the liquid inlet pipe 100 through the PH adjusting pipe 102, and the chemical agent is injected into the heavy metal wastewater to adjust the PH value of the heavy metal wastewater during the heavy metal wastewater passes through the liquid inlet pipe 100. The embodiment makes the PH value of heavy metal waste water get corresponding adjustment through the injection volume of adjustment medicament for it reaches predetermined PH value within range.
As a preferred embodiment of the present invention, as shown in fig. 2 and 9, the defoaming mechanism includes a defoaming reaction kettle 200, the defoaming reaction kettle 200 has a kettle body 201 and a defoaming mesh layer 202, wherein the upper end of the kettle body 201 is connected with the lower end of the splash guard 101, and the defoaming mesh layer 202 is assembled in the kettle body 201. The defoaming screen 202 includes an upper pressing plate 2021 and a defoaming screen body 2022, a bottom screen 203 is configured at the lower end of the kettle body 201, the defoaming screen body 2022 is assembled in the kettle body 201, and the defoaming screen body 2022 is supported by the bottom screen 203, the upper pressing plate 2021 is disposed at the upper end of the defoaming screen body 2022. In this embodiment, the upper press plate 2021 is connected to the bottom mesh plate 203 by a plurality of connecting screws 2023, and each connecting screw 2023 penetrates the demister net body 2022 in the vertical direction. This embodiment is through adjusting connecting bolt, make the upper press plate 2021 oppress except that foam net layer body 2022, and then make and remove foam net layer body 2022 density and change, when the density that removes foam net layer body 2022 improves gradually, the effect of removing foam that removes foam net layer body 2022 promotes thereupon, but the rate that passes through of heavy metal waste water removes foam net layer body 2022 can descend thereupon, consequently need adjust upper press plate 2021, make the density that removes foam net layer body 2022 reach the balance, the throughput that removes heavy metal waste water under the more excellent prerequisite of foam effect promptly also can not receive the influence. This embodiment can be constructed with the sampling tube on the cauldron body 201, installs the control valve on the sampling tube, comes the PH value of surveying waste water through the sample, and the effect of heavy metal chelate in the waste water.
As a preferred embodiment of the present invention, as shown in fig. 2 and 11 to 16, the adsorption mechanism 300 includes an outer mounting cylinder 301 and an adsorption unit 307, wherein the adsorption unit 307 is mounted in the outer mounting cylinder 301, and the adsorption unit 307 includes a primary adsorption layer 302, a secondary adsorption layer 303 and a tertiary adsorption layer 304 which are sequentially arranged in a vertical direction. The number of the suction units 307 of the present embodiment is at least one, when the number of the suction units 307 is at least two, a mount 305 is mounted in the outer mount pipe 301, an orifice plate 314 is configured at the lower end of the outer mount pipe 301, a plurality of mount cavities 306 are configured on the mount 305, each suction unit 307 is mounted in the corresponding mount cavity 306, and the lower end of the suction unit 307 abuts on the upper end surface of the orifice plate 314. Waste water passes through elementary adsorbed layer 302, secondary adsorbed layer 303 and tertiary adsorbed layer 304 step by step for flocculent precipitate in the waste water is adsorbed step by step, realizes hierarchical absorption, and then improves adsorption efficiency.
As a preferred embodiment of the present invention, in order to improve the adsorption effect of each adsorption layer on the flocculent precipitate, as shown in fig. 11 to 13, the primary adsorption layer 302 includes a primary adsorption layer body 3021, a primary upper liquid passing net 3022 is provided at the center of the upper end face of the primary adsorption layer body 3021 closed at the outer periphery thereof, and a primary lower liquid passing net 3023 is provided at the center of the primary adsorption layer body 3021 closed at the outer periphery thereof. The secondary adsorption layer 303 comprises a secondary adsorption layer body 3031, a secondary upper liquid passing net 3032 is arranged at the position, sealed at the center, of the outer periphery of the upper end face of the secondary adsorption layer body 3031, and a secondary lower liquid passing net 3033 is arranged at the position, sealed at the outer periphery, of the lower end face of the secondary adsorption layer body 3031. The tertiary adsorption layer 304 includes a tertiary adsorption layer body 3041, a tertiary upper liquid passing net 3042 is provided at a position where the center of the upper end face of the tertiary adsorption layer body 3041 is closed and the periphery thereof is provided, and a tertiary lower liquid passing net 3043 is provided at a position where the periphery of the lower end face of the tertiary adsorption layer body 3041 is closed and the center thereof is provided. The wastewater with flocculent precipitates enters the primary adsorption layer body 3021 from the primary upper liquid passing net 3022, moves vertically and horizontally, enters the secondary adsorption layer body 3031 from the primary lower liquid passing net 3023 through the secondary upper liquid passing net 3032, then moves vertically and horizontally in the secondary adsorption layer body 3031, enters the tertiary adsorption layer body 3041 from the secondary lower liquid passing net 3033 through the tertiary upper liquid passing net 3042, then moves vertically and horizontally in the tertiary adsorption layer body 3041, and finally enters the centrifugal separation mechanism 400 from the tertiary lower liquid passing net 3043. During waste water gets into elementary adsorbed layer 302, secondary adsorbed layer 303 and tertiary adsorbed layer 304 in this embodiment, not only along vertical motion, along transverse motion simultaneously moreover, make waste water all obtain improving with the contact time and the area of contact of each adsorbed layer like this, and then realized that the flocculent precipitate in the waste water is fully adsorbed by each adsorbed layer, compare current waste water in the intraformational unidirectional movement of adsorbed layer, the effect promotes great. As shown in fig. 16, the adsorption unit 307 includes a primary cylindrical adsorbent 308, a secondary cylindrical adsorbent 309, and a tertiary cylindrical adsorbent 310, which are arranged in this order in a vertical direction downward, so that when the adsorption unit 307 is dirty, it is easy to detach and replace, and to perform a cleaning operation. In this embodiment, in order to facilitate disassembly and replacement, the adsorption mechanism 300 is a split structure, that is, as shown in fig. 14 to 16, the outer mounting cylinder 301 is a split structure, and the adsorption unit 307 can be divided into two forms. First, as shown in fig. 14, when there is one suction unit 307, the suction unit 307 includes a plurality of suction portions, an upper regulation plate 315 is fixed to the mounting stem 800, the upper regulation plate 315 is located at an upper end of the suction portions, and the upper regulation plate 315 regulates the suction portions in the outer mounting cylinder 301. Each adsorption part is arranged corresponding to a split part corresponding to the outer installation cylinder 301, and comprises a primary fan-shaped adsorption body 311, a secondary fan-shaped adsorption body 312 and a tertiary fan-shaped adsorption body 313 which are sequentially arranged from top to bottom. Second, as shown in fig. 15-16, the outer mounting tube 301 and the mounting seat 305 are divided into a plurality of parts, wherein each of the divided parts of the mounting seat 305 includes at least one mounting cavity 306, and the suction unit 307 is mounted in the corresponding mounting cavity 306.
As a preferred embodiment of the present invention, as shown in fig. 2 to 8, a centrifugal separation mechanism 400 includes an outer fitting case 401 and a centrifugal slag removal unit, wherein the present embodiment is configured with a slag discharge pipe 402 at a lower end of the outer fitting case 401, the centrifugal slag removal unit is installed in the outer fitting case 401, a slag collection chamber is formed between the centrifugal slag removal unit and the outer fitting case 401, the slag discharge pipe 402 communicates with a lower end of the slag collection chamber, and the centrifugal slag removal unit is connected with a drive mechanism 500. The driving mechanism 500 drives the centrifugal deslagging unit to rotate at high speed, so that the wastewater in the centrifugal deslagging unit rotates, flocculent precipitates in the wastewater are separated by centrifugation and then enter the slag collecting cavity, and finally are discharged through the slag discharge pipe 402.
As a preferred embodiment of the present invention, as shown in fig. 3-8, the centrifugal deslagging unit includes a centrifugal tray, a cyclone liquid inlet tray 405, a drainage funnel 409 and a water outlet pipe 410, wherein the centrifugal tray is disposed in the outer assembly shell 401, the cyclone liquid inlet tray 405 is disposed in the centrifugal tray, the radial length of the cyclone liquid inlet tray 405 is gradually enlarged downward along the vertical direction, and a liquid inlet channel is formed at the lower end of the cyclone liquid inlet tray 405 and the corresponding position of the centrifugal tray. The diversion funnel 409 of the present embodiment is arranged in the rotational flow liquid inlet disc 405, the upper end of the diversion funnel 409 is configured with a liquid guiding edge 408, and the liquid guiding edge 408 forms an overflowing channel corresponding to the rotational flow liquid inlet disc 405. In order to realize the pulling of water and enable the wastewater to move downwards to provide a power source, namely, the wastewater is enabled to move downwards from the defoaming mechanism to the centrifugal separation mechanism 400, so that flocculent precipitates in the wastewater are fully separated, and the obtained purified water is discharged through the drainage hopper 409, the technical measures adopted specifically are that drainage blades 411 are uniformly constructed in the drainage hopper 409 along the circumferential direction of the drainage hopper 409, each drainage blade 411 is fixedly connected with the mounting vertical rod 800, the water outlet pipe 410 is constructed at the lower end of the drainage hopper 409, the water outlet pipe 410 extends downwards along the vertical direction to the lower end of the outer assembly shell 401, and the water outlet pipe 410 is connected with the driving mechanism 500. The driving mechanism 500 drives the water outlet pipe 410 to rotate, so that the centrifugal disc and the drainage hopper 409 synchronously rotate, the flocculent precipitate is separated, and meanwhile, purified water is discharged, namely, the purified water sequentially passes through the liquid inlet channel, the overflowing channel, the drainage hopper 409 and the water outlet pipe 410 and finally is discharged out of the centrifugal separation mechanism 400. The centrifugal disk of the present embodiment comprises a water inlet sleeve 403 and a separating barrel 404, wherein the water inlet sleeve 403 is located at the upper part, the separating barrel 404 is located at the lower part, and the lower end of the water inlet sleeve 403 is fixedly connected with the upper end of the separating barrel 404. The radial length of the separating cylinder 404 in this embodiment is gradually reduced from the water inlet sleeve 403, and the lower end of the separating cylinder 404 is connected with the water outlet pipe 410. In order to make the wastewater entering the centrifugal separation mechanism 400 swirl and accelerate, a plurality of swirl vanes 406 are configured on the outer surface of the swirl liquid inlet disc 405, the swirl vanes 406 are uniformly arranged along the circumferential direction of the swirl liquid inlet disc 405, a pressurizing flow passage 413 is formed between adjacent swirl vanes 406, the wastewater enters the centrifugal separation mechanism 400 and generates a swirl under the action of the swirl vanes 406, then the purpose of pressurizing and accelerating is achieved through the pressurizing flow passage 413, so that the wastewater entering the separation cylinder 404 rotates at high speed, flocculent precipitate in the wastewater enters the slag collecting cavity through the separation cylinder 404 under the action of centrifugal force, then gradually deposits at the bottom of the slag collecting cavity, and finally is discharged through the slag discharge pipe 402. The upper end of the drainage hopper 409 of the present embodiment is configured with a drainage cylinder 407, the above-mentioned liquid guiding edge 408 forms the upper end of the drainage cylinder 407, and the drainage blade 411 is located in the drainage cylinder 407. The purified water of the embodiment sequentially passes through the drainage cylinder 407, the drainage hopper 409 and the water outlet pipe 410, and the purified water is gradually accelerated in the process and smoothly discharged out of the water outlet pipe 410.
As a preferred embodiment of the present invention, as shown in fig. 3, a regular polygon-shaped assembly hole is opened at the center of the upper end of the cyclone liquid inlet tray 405, and a cylindrical structure is configured at the connection position of the installation vertical rod 800 and the cyclone liquid inlet tray 405, and the cross section of the cylindrical structure is a regular polygon. In the present embodiment, a limiting flange 803 is configured on the vertical mounting rod 800, the upper end of the limiting flange 803 supports the center of the lower end of the adsorption mechanism 300, a hard spring 804 is sleeved on the vertical mounting rod 800, and the two ends of the hard spring 804 are respectively connected with the lower end of the limiting flange 803 and the upper end of the cyclone liquid inlet disc 405. When the adsorption mechanism 300 adsorbs the flocculent precipitate in the wastewater poorly, the driving mechanism 500 is controlled to drive the rotating speed of the water outlet pipe 410 to be increased, so that the centrifugal force is increased, the rotational flow liquid inlet disc 405 is descended for a certain distance, the apertures of the liquid inlet channel and the overflowing channel are both reduced, the water passing amount is reduced, and then the remaining flocculent precipitate in the wastewater is fully separated, and the water outlet amount of the water outlet pipe 410 is correspondingly reduced under the condition. When the flocculent precipitate content is lower in the waste water, reduce the rotational speed of outlet pipe 410, under the prerequisite of guaranteeing the flocculent precipitate abundant separation in the waste water, inlet channel and the equal increase of bore that overflows the passageway, the volume of water passing improves like this, and the corresponding promotion that obtains of the water yield of outlet pipe 410. In order to fully discharge the flocculent precipitate in the slag collecting cavity out of the slag collecting cavity, as shown in fig. 2 and 6, the lower end of the centrifugal disc is uniformly provided with the slag scraping plates 412 along the circumferential direction thereof, each slag scraping plate 412 extends along the radial direction of the centrifugal disc, the lower ends of the slag scraping plates 412 are in contact with the inner bottom wall of the outer assembling shell 401, and the slag scraping plates 412 rotate synchronously with the centrifugal disc, so that the flocculent precipitate at the bottom of the slag collecting cavity is scraped.
As a preferred embodiment of the present invention, as shown in fig. 4, the driving mechanism 500 includes a driving motor 501, a driving wheel 503 is mounted on an output shaft 502 of the driving motor 501, a driven wheel 504 is mounted on the water outlet pipe 410, and the driving wheel 503 and the driven wheel 504 are in transmission connection via a transmission belt 505. Driving motor 501 rotates through drive action wheel 503 for action wheel 503 drives under the transmission of drive belt 505 from driving wheel 504 and rotates, and then realizes driving outlet pipe 410 from driving wheel 504 and rotates, realizes centrifugal separating mechanism 400 and the purpose of installation montant 800 synchronization action, and then realizes the separation of flocculent precipitate in the waste water, and the synchronous of defoaming and stirring goes on.
As a preferred embodiment of the present invention, as shown in fig. 2 and 10, a reaction area is formed between the defoaming mechanism and the adsorption mechanism 300, and the administration mechanism 700 is provided at the upper portion of the reaction area. The administration mechanism 700 includes an upper administration loop 703, a middle administration loop 702, and a lower administration loop 704 which are disposed in this order in a vertical direction, the lower ends of the upper administration loop 703, the middle administration loop 702, and the lower administration loop 704 are uniformly provided with administration holes, the administration range of the middle administration loop 702 is the periphery of the reaction region, the administration ranges of the upper administration loop 703 and the lower administration loop 704 are the center of the reaction region, and the boundaries of the administration ranges of the upper administration loop 703, the middle administration loop 702, and the lower administration loop 704 are overlapped or staggered with each other. In this embodiment, the upper feeding ring 703 is connected to the middle feeding ring 702 through a plurality of first connecting pipes 705, the middle feeding ring 702 is connected to the lower feeding ring 704 through a plurality of second connecting pipes 706, a plurality of connecting rods 707 are fixedly connected to the middle feeding ring 702, and one end of each connecting rod 707 far away from the middle feeding ring 702 is connected to a corresponding position on the inner wall of the kettle body 201. In addition, in the embodiment, the administration loop 702 is communicated with the administration header 701, the administration header 701 is connected with the outlet of the administration pump, the inlet of the administration pump is communicated with the administration barrel, the administration barrel contains the heavy metal capture agent, and the heavy metal capture agent is pumped into the upper administration loop 703, the middle administration loop 702 and the lower administration loop 704 by the administration pump, so that the heavy metal capture agent is sprayed out and arranged in a three-dimensional manner in the reaction region due to the special positions of the upper administration loop 703, the middle administration loop 702 and the lower administration loop 704, and fully reacts with the heavy metal ions in the wastewater under the stirring of the stirring blade 802. This embodiment heavy metal trapping agent pours into the waste water into along vertical direction layering, simultaneously, under the degree of depth of difference, pours into the waste water into along reaction zone's radial layering into, and then improves the contact efficiency of heavy metal ion and heavy metal trapping agent in the waste water for react more abundant, quick.
As a preferred embodiment of the present invention, as shown in fig. 1-2, the present embodiment is provided with a support frame 600, the support frame 600 has a support base 601 contacting with the ground, a plurality of connecting vertical rods 604 are connected to the support base 601, and a first support rod 602 and a second support rod 603 are connected to each connecting vertical rod 604, wherein the first support rod 602 is connected to the outer wall of the kettle 201, and the second support rod 603 is connected to the outer wall of the outer assembly shell 401. In this way, when the adsorption mechanism 300 is of a split type structure, it is convenient to detach and replace the adsorption unit 307 in the adsorption mechanism 300. A plurality of third support rods 605 are fixed to the support base 601, and each third support rod 605 is connected to a lower portion of the outer assembly case 401.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims (10)

1. The heavy metal wastewater treatment equipment is characterized in that: include along vertical feed liquor mechanism, the defoaming mechanism that connects gradually downwards, mechanism, the mechanism of dosing, adsorption apparatus structure and centrifugal separating mechanism, centrifugal separating mechanism is connected with actuating mechanism, and centrifugal separating mechanism is connected with an installation montant, the installation montant is from centrifugal separating mechanism department along the vertical upper end that upwards extends the defoaming mechanism, in install surperficial defoaming blade and stirring vane on the installation montant respectively, surperficial defoaming blade is located the defoaming mechanism top, and the upper surface of defoaming mechanism is pressed close to the lower surface of surperficial defoaming blade, stirring vane is located between mechanism of dosing and the adsorption apparatus structure.
2. The heavy metal wastewater treatment equipment according to claim 1, wherein: the centrifugal separation mechanism comprises an outer assembly shell, a slag discharge pipe is constructed at the lower end of the outer assembly shell, a centrifugal slag removal unit is installed in the outer assembly shell, a slag collection cavity is formed between the centrifugal slag removal unit and the outer assembly shell, the slag discharge pipe is communicated with the lower end of the slag collection cavity, and the centrifugal slag removal unit is connected with a driving mechanism.
3. The heavy metal wastewater treatment equipment according to claim 2, wherein: the centrifugal deslagging unit comprises a centrifugal disc arranged in the outer assembling shell, a rotational flow liquid inlet disc is arranged in the centrifugal disc, the radial length of the rotational flow liquid inlet disc is gradually expanded downwards along the vertical direction, a liquid inlet channel is formed at the lower end of the rotational flow liquid inlet disc and the corresponding position of the centrifugal disc, a drainage hopper is arranged in the rotational flow liquid inlet disc, a liquid guiding edge is constructed at the upper end of the drainage hopper, an overflowing channel is formed at the position, corresponding to the rotational flow liquid inlet disc, of the liquid guiding edge, drainage blades are uniformly constructed in the drainage hopper along the circumferential direction of the drainage blades, the drainage blades are fixedly connected with an installation vertical rod, a water outlet pipe extending out of the lower end of the outer assembling shell is constructed at the lower end of the drainage hopper, and the water outlet pipe is connected with a driving mechanism.
4. The heavy metal wastewater treatment equipment according to claim 3, wherein: the centrifugal disc comprises a water inlet sleeve positioned at the upper part and a separating cylinder positioned at the lower part, the radial length of the separating cylinder gradually reduces from the water inlet sleeve downwards, and the lower end of the separating cylinder is connected with a water outlet pipe; a plurality of swirl vanes are uniformly constructed on the outer surface of the swirl liquid inlet disc along the circumferential direction of the swirl liquid inlet disc, and a pressurizing flow channel is formed between every two adjacent swirl vanes; the upper end of the drainage hopper is provided with a drainage cylinder, the upper end of the drainage cylinder is formed by the drainage edge, and the drainage blade is positioned in the drainage cylinder.
5. The heavy metal wastewater treatment equipment according to claim 3, wherein: in the upper end center department of whirl feed liquor dish has seted up regular polygon's pilot hole, installation montant and whirl feed liquor dish junction structure have the transversal cylindricality structure of personally submitting regular polygon, construct limit flange on the installation montant, limit flange's upper end supports adsorption equipment's lower extreme center department, and a stereoplasm spring suit is on the installation montant, and the both ends of stereoplasm spring are connected with limit flange's lower extreme and whirl feed liquor dish's upper end respectively.
6. The heavy metal wastewater treatment equipment according to claim 3, wherein: the driving mechanism comprises a driving motor with an output shaft provided with a driving wheel, a driven wheel is assembled on the water outlet pipe, and the driving wheel and the driven wheel are in transmission connection through a transmission belt.
7. The heavy metal wastewater treatment equipment according to claim 3, wherein: and the lower end of the centrifugal disc is uniformly provided with slag scraping plates along the circumferential direction of the centrifugal disc, each slag scraping plate extends along the radial direction of the centrifugal disc, and the lower ends of the slag scraping plates are in contact with the inner bottom wall of the outer assembly shell.
8. The heavy metal wastewater treatment equipment according to claim 1, wherein: the adsorption mechanism comprises an outer installation cylinder, an adsorption unit is installed in the outer installation cylinder, and the adsorption unit comprises a primary adsorption layer, a secondary adsorption layer and a tertiary adsorption layer which are sequentially arranged along the vertical direction downwards; the quantity of adsorbing the unit is one at least, when the quantity of adsorbing the unit is two at least, in be equipped with the mount pad in the outer installation section of thick bamboo, be constructed in the lower extreme of outer installation section of thick bamboo and have the orifice plate, be constructed a plurality of installation chambeies on the mount pad, each adsorbs the unit and installs in corresponding installation intracavity, and the lower extreme butt of adsorbing the unit on the up end of orifice plate.
9. The heavy metal wastewater treatment equipment according to claim 8, wherein: a primary upper liquid passing net is arranged at the position of the center of the upper end face of the primary adsorption layer, which is closed at the periphery, and a primary lower liquid passing net is arranged at the position of the center of the lower end face of the primary adsorption layer, which is closed at the periphery; a secondary upper liquid passing net is arranged at the position of the periphery of the upper end face of the secondary adsorption layer, which is closed at the center, and a secondary lower liquid passing net is arranged at the position of the periphery of the lower end face of the secondary adsorption layer, which is closed at the center; the center of the upper end face of the third-stage adsorption layer is sealed, and the periphery of the upper end face of the third-stage adsorption layer is provided with a third-stage upper liquid passing net, and the periphery of the lower end face of the third-stage adsorption layer is sealed, and the center of the lower end face of the third-stage adsorption layer is provided with a third-stage lower liquid passing net.
10. The heavy metal wastewater treatment equipment according to claim 1, wherein: a reaction area is formed between the foam removing mechanism and the adsorption mechanism, the dosing mechanism is arranged at the upper part of the reaction area and comprises an upper dosing ring pipe, a middle dosing ring pipe and a lower dosing ring pipe which are arranged in sequence along the vertical direction, dosing holes are uniformly formed at the lower ends of the upper dosing ring pipe, the middle dosing ring pipe and the lower dosing ring pipe, the dosing range of the middle dosing ring pipe is at the periphery of the reaction area, the dosing range of the upper dosing ring pipe and the lower dosing ring pipe is at the center of the reaction area, and the boundaries of the dosing ranges of the upper dosing ring pipe, the middle dosing ring pipe and the lower dosing ring pipe are mutually overlapped or staggered; the upper dosing ring pipe is communicated with the middle dosing ring pipe through a plurality of first connecting pipes, the middle dosing ring pipe is communicated with the lower dosing ring pipe through a plurality of second connecting pipes, the middle dosing ring pipe is communicated with the dosing main pipe, the dosing main pipe is connected with an outlet of the dosing pump, and an inlet of the dosing pump is communicated with the dosing barrel.
CN202211036340.0A 2022-08-28 2022-08-28 Heavy metal wastewater treatment equipment Active CN115180749B (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115636452A (en) * 2022-11-04 2023-01-24 吴文强 Integrated rural water purification equipment
CN116116107A (en) * 2023-04-14 2023-05-16 石家庄市环境科学研究院 Water treatment device and water treatment system

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Publication number Priority date Publication date Assignee Title
US4268385A (en) * 1978-03-14 1981-05-19 Dengyosha Engineering Co., Inc. Centrifugal rotating disc assembly for biological waste water treatment apparatus
CN106007056A (en) * 2016-06-02 2016-10-12 哈尔滨工业大学 Device and method for simultaneous removal of trace heavy metals in electroplating wastewater
CN114768389A (en) * 2022-04-12 2022-07-22 江苏华普泰克石油装备有限公司 Demister for oil exploitation three-phase separator

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Publication number Priority date Publication date Assignee Title
US4268385A (en) * 1978-03-14 1981-05-19 Dengyosha Engineering Co., Inc. Centrifugal rotating disc assembly for biological waste water treatment apparatus
CN106007056A (en) * 2016-06-02 2016-10-12 哈尔滨工业大学 Device and method for simultaneous removal of trace heavy metals in electroplating wastewater
CN114768389A (en) * 2022-04-12 2022-07-22 江苏华普泰克石油装备有限公司 Demister for oil exploitation three-phase separator

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115636452A (en) * 2022-11-04 2023-01-24 吴文强 Integrated rural water purification equipment
CN115636452B (en) * 2022-11-04 2024-03-08 吴文强 Integrated rural water purification equipment
CN116116107A (en) * 2023-04-14 2023-05-16 石家庄市环境科学研究院 Water treatment device and water treatment system
CN116116107B (en) * 2023-04-14 2023-06-09 石家庄市环境科学研究院 Water treatment device and water treatment system

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