CN112426771A - Magnesium oxide wastewater treatment and filtration system and method - Google Patents

Magnesium oxide wastewater treatment and filtration system and method Download PDF

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Publication number
CN112426771A
CN112426771A CN202011100663.2A CN202011100663A CN112426771A CN 112426771 A CN112426771 A CN 112426771A CN 202011100663 A CN202011100663 A CN 202011100663A CN 112426771 A CN112426771 A CN 112426771A
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CN
China
Prior art keywords
filter
pipeline
catalyst recovery
magnesium oxide
tank
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Pending
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CN202011100663.2A
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Chinese (zh)
Inventor
何向阳
肖利亚
李志鸿
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Feature Tech Wuxi Filtration Technology Co ltd
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Feature Tech Wuxi Filtration Technology Co ltd
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Priority to CN202011100663.2A priority Critical patent/CN112426771A/en
Publication of CN112426771A publication Critical patent/CN112426771A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/50—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition
    • B01D29/56—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in series connection
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
    • B01D29/13—Supported filter elements
    • B01D29/15—Supported filter elements arranged for inward flow filtration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/50—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/62—Regenerating the filter material in the filter
    • B01D29/66—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/76—Handling the filter cake in the filter for purposes other than for regenerating
    • B01D29/80—Handling the filter cake in the filter for purposes other than for regenerating for drying
    • B01D29/84—Handling the filter cake in the filter for purposes other than for regenerating for drying by gases or by heating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D37/00—Processes of filtration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D37/00—Processes of filtration
    • B01D37/02—Precoating the filter medium; Addition of filter aids to the liquid being filtered
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F5/00—Compounds of magnesium
    • C01F5/02—Magnesia
    • 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
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/50—Improvements relating to the production of bulk chemicals
    • Y02P20/584—Recycling of catalysts

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Catalysts (AREA)

Abstract

The invention provides a magnesium oxide wastewater treatment and filtration system and a method, comprising a catalyst recovery filter, an inclined plate filter tank for placing magnesium oxide wastewater and a buffer gas tank; the filter pulp liquid inlet, the residual liquid outlet, the overflow port and the filtrate outlet of the catalyst recovery filter are respectively connected with the inclined plate filter tank, and the overflow port and the filtrate outlet of the catalyst recovery filter are respectively connected with the buffer gas tank. According to the magnesium oxide wastewater treatment and filtration system and method provided by the invention, the magnesium oxide wastewater can be subjected to circulating filtration by using the catalyst recovery filter, so that dry magnesium oxide particles are extracted, the extraction efficiency and the extraction amount are improved, and the resource waste is prevented.

Description

Magnesium oxide wastewater treatment and filtration system and method
Technical Field
The invention relates to the technical field of wastewater treatment equipment, in particular to a magnesium oxide wastewater treatment and filtration system and a magnesium oxide wastewater treatment and filtration method.
Background
The surface of the incoming material of the silicon steel hot-drawing leveling unit is provided with magnesium oxide powder. The magnesium oxide brushing section mainly removes MgO powder on the surface of the strip steel, and the MgO powder on the surface of the strip steel is brushed and washed by the brushing groove, so that the clean strip steel enters the inlet loop, and the pollution to the inlet loop is avoided. The waste water generated in the brushing section contains magnesium oxide powder, and is required to be sent to a magnesium oxide waste water treatment system for treatment, and the magnesium oxide powder in the waste water is removed and then returned to the unit for recycling. At present, the magnesium oxide wastewater treatment adopts coagulation and precipitation processes, the treated water is returned to a unit for recycling, and the generated sludge is concentrated in a concentration tank, centrifugally dewatered and transported outside.
The existing wastewater treatment system mainly has the following problems: the magnesium oxide powder particles are small and high in viscosity, are easily adhered to the wall of the inclined-edge sedimentation tank and in a pipeline, need to be regularly washed with water, are easily hardened after a long time, form a cement-like substance, and cause the blockage of the whole sludge circulation system, so that the inclined-plate sedimentation tank needs to be regularly and manually dug, the operation strength is high, the operation environment is poor, and the overhaul cost is increased; the change of the water content of the dewatered sludge is large (30-50%), the dewatered sludge is in a slurry state often, and the dewatered sludge can be recycled only after being dried in a field on a production site; at present, a flocculating agent and a coagulant aid are needed in the treatment process, the operation cost is increased, and the concentration of chloride ions in water is increased by adding a medicament, so that part of magnesium oxide wastewater is periodically discharged to an energy-medium workshop.
Disclosure of Invention
The invention aims to disclose a magnesium oxide wastewater treatment and filtration system, which can circularly filter magnesium oxide wastewater by utilizing a catalyst recovery filter so as to extract dry magnesium oxide particles, improve extraction efficiency and extraction amount and prevent resource waste.
In order to achieve the aim, the invention provides a magnesium oxide wastewater treatment and filtration system, which comprises a catalyst recovery filter, an inclined plate filter tank for placing magnesium oxide wastewater and a buffer gas tank; the filter pulp liquid inlet, the residual liquid outlet, the overflow port and the filtrate outlet of the catalyst recovery filter are respectively connected with the inclined plate filter tank, and the overflow port and the filtrate outlet of the catalyst recovery filter are respectively connected with the buffer gas tank.
In some embodiments, a first pipeline is externally connected to the inclined plate filter tank, a second pipeline is externally connected to a filtrate liquid inlet of the catalyst recovery filter, a third pipeline is externally connected to a raffinate discharge port of the catalyst recovery filter, a fourth pipeline positioned above the inclined plate filter tank is externally connected to an overflow port of the catalyst recovery filter, a fifth pipeline is further arranged above the inclined plate filter tank, a sixth pipeline positioned above the inclined plate filter tank is externally connected to a filtrate outlet of the catalyst recovery filter, and the first pipeline is communicated with the second pipeline, the third pipeline and the fifth pipeline; a seventh pipeline is connected outside the buffer gas tank, an eighth pipeline and a ninth pipeline are connected to the seventh pipeline, the eighth pipeline is connected with the fourth pipeline, and the ninth pipeline is connected with the sixth pipeline; all install the ooff valve on first pipeline, second pipeline, third pipeline, fourth pipeline, fifth pipeline, sixth pipeline, seventh pipeline, eighth pipeline, the ninth pipeline, install the pump body on the first pipeline.
In some embodiments, the filter aid storage tank is further included, and the filter aid storage tank further includes a tenth pipeline externally connected to the first pipeline at two ends, wherein the filter aid storage tank is installed on the tenth pipeline, and the tenth pipeline is provided with a switch valve and a pump body.
In some embodiments, a material containing cart is arranged at the bottom of a residue discharge port of the catalyst recovery filter.
The second purpose of the invention is to disclose a magnesium oxide wastewater treatment and filtration method, which has simple process, can circularly filter magnesium oxide wastewater by utilizing a catalyst recovery filter, extracts and dries magnesium oxide particles, improves extraction efficiency and extraction amount, and prevents resource waste.
In order to realize the aim, the invention provides a magnesium oxide wastewater treatment and filtration method, which comprises the following steps:
the method comprises the following steps: liquid-filled
Injecting the magnesium oxide wastewater in the inclined plate filter tank into a catalyst recovery filter until the catalyst recovery filter is full, and refluxing the redundant magnesium oxide wastewater into the inclined plate filter tank;
step two: filter cloth cleaning
Introducing gas into the catalyst recovery filter to perform back flushing on the filter cloth, and cleaning the filter cloth;
step three: refill liquid
After the gas in the catalyst recovery filter is exhausted, the magnesium oxide wastewater is filled again;
step four: filtration
Opening a valve, allowing the magnesium oxide wastewater to flow into a filter column through filter cloth, filtering from a filter column central pipe, discharging filtrate back to an inclined plate filter tank, filtering for a period of time, and forming a filter cake layer on the surface of the filter cloth to form deep filtration capable of intercepting finer particles;
step five: discharging residual liquid
When the pressure difference between the inlet and the outlet of the catalyst recovery filter reaches a set value, stopping filtering, introducing compressed gas from an overflow port of the catalyst recovery filter for positive pressure discharge, pressing unfiltered liquid back into the inclined plate filter tank through a filter pipeline by the compressed gas, keeping the filter pipeline in an open state at the moment, allowing the gas to flow through the filter cloth, fully replacing the liquid in a filter cake on the surface of the filter cloth, and discharging bottom residual liquid into the inclined plate filter tank through a residual liquid discharge port;
step six: drying
Introducing compressed gas for positive sweeping, and drying the filter element until a filter cake meeting the moisture content requirement is obtained;
step seven: discharging filter cake
And after the pressure in the catalyst recovery filter is removed, injecting gas into a filtrate outlet of the catalyst recovery filter, carrying out back flushing on the filter cloth, and discharging the filter cake after vibration crushing.
In some embodiments, in step one and step three, further comprising injecting a filter aid into the catalyst recovery filter.
Compared with the prior art, the invention has the beneficial effects that: according to the magnesium oxide wastewater treatment and filtration system and method provided by the invention, the magnesium oxide wastewater can be subjected to circulating filtration by using the catalyst recovery filter, so that dry magnesium oxide particles are extracted, the extraction efficiency and the extraction amount are improved, and the resource waste is prevented.
Drawings
FIG. 1 is a schematic structural view of a magnesium oxide wastewater treatment filtration system according to the present invention.
Detailed Description
The present invention is described in detail with reference to the embodiments shown in the drawings, but it should be understood that these embodiments are not intended to limit the present invention, and those skilled in the art should understand that functional, methodological, or structural equivalents or substitutions made by these embodiments are within the scope of the present invention.
The first embodiment is as follows:
the magnesia wastewater treatment filtration system shown in fig. 1 comprises a catalyst recovery filter 2, an inclined plate filter tank 1 for placing magnesia wastewater and a buffer gas tank 5. The catalyst recovery filter 2 is disclosed in the publication No. CN201208526Y, and the description thereof is omitted.
The filter pulp liquid inlet, the residual liquid outlet, the overflow port and the filtrate outlet of the catalyst recovery filter 2 are respectively connected with the inclined plate filter tank 1, and the overflow port and the filtrate outlet of the catalyst recovery filter 2 are respectively connected with the buffer gas tank 5.
Specifically, swash plate filter tank 1 is external to have first pipeline 61, catalyst recovery filter 2's filtration thick liquid inlet is external to have second pipeline 62, catalyst recovery filter 2's the external third pipeline 63 of raffinate discharge port, catalyst recovery filter 2's overflow mouth is external to have the fourth pipeline 64 that is located swash plate filter tank 1 top, swash plate filter tank 1 top still is equipped with fifth pipeline 65, catalyst recovery filter 2's filtrate export is external to have the sixth pipeline 66 that is located swash plate filter tank 1 top.
The first conduit 61 communicates with the second conduit 62, the third conduit 63 and the fifth conduit 65. A seventh pipeline 67 is connected outside the buffer gas tank 5, an eighth pipeline 68 and a ninth pipeline 69 are connected to the seventh pipeline 67, the eighth pipeline 68 is connected with the fourth pipeline 64, and the ninth pipeline 69 is connected with the sixth pipeline 66.
The first pipeline 61, the second pipeline 62, the third pipeline 63, the fourth pipeline 64, the fifth pipeline 65, the sixth pipeline 66, the seventh pipeline 67, the eighth pipeline 68 and the ninth pipeline 69 are all provided with switch valves, and the first pipeline 61 is provided with a pump body.
The filter aid storage tank comprises a filter aid storage tank 4 and a tenth pipeline 60, wherein two ends of the tenth pipeline 60 are externally connected to a first pipeline 61, the filter aid storage tank 4 is installed on the tenth pipeline 60, and a switch valve and a pump body are installed on the tenth pipeline 60. And a material containing trolley 3 is arranged at the bottom of a residue discharge port of the catalyst recovery filter 2.
The working process of the magnesium oxide covered wastewater treatment and filtration system is as follows: magnesium oxide wastewater is injected into the catalyst recovery filter 2, redundant magnesium oxide wastewater is added into the inclined plate filter tank 1, magnesium oxide wastewater in the first pipeline 61 enters the second pipeline 62 to be relayed and enters the catalyst recovery filter 2, meanwhile, a filter aid in the filter aid storage tank 4 is discharged into the first pipeline 61 through the tenth pipeline 60 and enters the catalyst recovery filter 2 together with the magnesium oxide wastewater, the catalyst recovery filter 2 is filled with the magnesium oxide wastewater, redundant magnesium oxide wastewater returns to the inclined plate filter tank 1 through the fourth pipeline 64, and filtrate returns to the inclined plate filter tank 1 through the sixth pipeline 66;
when the pressure difference between the inlet and the outlet of the catalyst recovery filter 2 reaches a set value, the buffer gas tank 5 is opened, compressed gas enters the catalyst recovery filter 2 through the seventh pipeline 67 and the eighth pipeline 68, magnesium oxide wastewater is pressed out of the catalyst recovery filter 2 and flows back to the inclined plate filter tank 1 through the third pipeline 63 and the fifth pipeline 65, the switch valve on the eighth pipeline 68 is closed, the switch valve on the ninth pipeline 69 is opened, the compressed gas enters the catalyst recovery filter 2 through the seventh pipeline 67 and the ninth pipeline 69, the filter cloth is subjected to back flushing, and filter cakes which are crushed by vibration, namely magnesium oxide particles, are discharged to the material containing trolley 3.
Example two:
the embodiment discloses a magnesium oxide wastewater treatment and filtration method, which comprises the following steps:
the method comprises the following steps: liquid-filled
Injecting the magnesium oxide wastewater in the inclined plate filter tank into the catalyst recovery filter until the magnesium oxide wastewater is full, refluxing the redundant magnesium oxide wastewater into the inclined plate filter tank, and simultaneously injecting a filter aid into the catalyst recovery filter;
step two: filter cloth cleaning
Introducing gas into the catalyst recovery filter to perform back flushing on the filter cloth, and cleaning the filter cloth;
step three: refill liquid
After the gas in the catalyst recovery filter is exhausted, filling the magnesium oxide wastewater again, and simultaneously injecting a filter aid into the catalyst recovery filter;
step four: filtration
Opening a valve, allowing the magnesium oxide wastewater to flow into a filter column through filter cloth, filtering from a filter column central pipe, discharging filtrate back to an inclined plate filter tank, filtering for a period of time, and forming a filter cake layer on the surface of the filter cloth to form deep filtration capable of intercepting finer particles;
step five: discharging residual liquid
When the pressure difference between the inlet and the outlet of the catalyst recovery filter reaches a set value, stopping filtering, introducing compressed gas from an overflow port of the catalyst recovery filter for positive pressure discharge, pressing unfiltered liquid back into the inclined plate filter tank through a filter pipeline by the compressed gas, keeping the filter pipeline in an open state at the moment, allowing the gas to flow through the filter cloth, fully replacing the liquid in a filter cake on the surface of the filter cloth, and discharging bottom residual liquid into the inclined plate filter tank through a residual liquid discharge port;
step six: drying
Introducing compressed gas for positive sweeping, and drying the filter element until a filter cake meeting the moisture content requirement is obtained;
step seven: discharging filter cake
And after the pressure in the catalyst recovery filter is removed, injecting gas into a filtrate outlet of the catalyst recovery filter, carrying out back flushing on the filter cloth, and discharging the filter cake after vibration crushing.
The above-listed detailed description is only a specific description of a possible embodiment of the present invention, and they are not intended to limit the scope of the present invention, and equivalent embodiments or modifications made without departing from the technical spirit of the present invention should be included in the scope of the present invention.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (6)

1. The magnesium oxide wastewater treatment and filtration system is characterized by comprising a catalyst recovery filter, an inclined plate filter tank for placing magnesium oxide wastewater and a buffer gas tank;
the filter pulp liquid inlet, the residual liquid outlet, the overflow port and the filtrate outlet of the catalyst recovery filter are respectively connected with the inclined plate filter tank, and the overflow port and the filtrate outlet of the catalyst recovery filter are respectively connected with the buffer gas tank.
2. The magnesium oxide wastewater treatment and filtration system according to claim 1, wherein a first pipeline is externally connected to the inclined plate filter tank, a second pipeline is externally connected to a slurry inlet of the catalyst recovery filter, a third pipeline is externally connected to a raffinate outlet of the catalyst recovery filter, a fourth pipeline is externally connected to an overflow port of the catalyst recovery filter, a fifth pipeline is further arranged above the inclined plate filter tank, a sixth pipeline is externally connected to a filtrate outlet of the catalyst recovery filter, and the first pipeline is communicated with the second pipeline, the third pipeline and the fifth pipeline;
a seventh pipeline is connected outside the buffer gas tank, an eighth pipeline and a ninth pipeline are connected to the seventh pipeline, the eighth pipeline is connected with the fourth pipeline, and the ninth pipeline is connected with the sixth pipeline;
all install the ooff valve on first pipeline, second pipeline, third pipeline, fourth pipeline, fifth pipeline, sixth pipeline, seventh pipeline, eighth pipeline, the ninth pipeline, install the pump body on the first pipeline.
3. The magnesium oxide wastewater treatment filtration system of claim 2, further comprising a filter aid storage tank, and further comprising a tenth pipe externally connected to the first pipe at both ends, wherein the filter aid storage tank is installed on the tenth pipe, and the tenth pipe is provided with a switch valve and a pump body.
4. The magnesia wastewater treatment filtration system of claim 1, wherein a material holding cart is provided at the bottom of the residue discharge port of the catalyst recovery filter.
5. The magnesium oxide wastewater treatment and filtration method is characterized by comprising the following steps:
the method comprises the following steps: liquid-filled
Injecting the magnesium oxide wastewater in the inclined plate filter tank into a catalyst recovery filter until the catalyst recovery filter is full, and refluxing the redundant magnesium oxide wastewater into the inclined plate filter tank;
step two: filter cloth cleaning
Introducing gas into the catalyst recovery filter to perform back flushing on the filter cloth, and cleaning the filter cloth;
step three: refill liquid
After the gas in the catalyst recovery filter is exhausted, the magnesium oxide wastewater is filled again;
step four: filtration
Opening a valve, allowing the magnesium oxide wastewater to flow into a filter column through filter cloth, filtering from a filter column central pipe, discharging filtrate back to an inclined plate filter tank, filtering for a period of time, and forming a filter cake layer on the surface of the filter cloth to form deep filtration capable of intercepting finer particles;
step five: discharging residual liquid
When the pressure difference between the inlet and the outlet of the catalyst recovery filter reaches a set value, stopping filtering, introducing compressed gas from an overflow port of the catalyst recovery filter for positive pressure discharge, pressing unfiltered liquid back into the inclined plate filter tank through a filter pipeline by the compressed gas, keeping the filter pipeline in an open state at the moment, allowing the gas to flow through the filter cloth, fully replacing the liquid in a filter cake on the surface of the filter cloth, and discharging bottom residual liquid into the inclined plate filter tank through a residual liquid discharge port;
step six: drying
Introducing compressed gas for positive sweeping, and drying the filter element until a filter cake meeting the moisture content requirement is obtained;
step seven: discharging filter cake
And after the pressure in the catalyst recovery filter is removed, injecting gas into a filtrate outlet of the catalyst recovery filter, carrying out back flushing on the filter cloth, and discharging the filter cake after vibration crushing.
6. The magnesium oxide wastewater treatment filtration method according to claim 5, wherein in the first step and the third step, a filter aid is injected into the catalyst recovery filter.
CN202011100663.2A 2020-10-15 2020-10-15 Magnesium oxide wastewater treatment and filtration system and method Pending CN112426771A (en)

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Application Number Priority Date Filing Date Title
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113053552A (en) * 2021-03-12 2021-06-29 中国核电工程有限公司 Method and device for pretreating non-process radioactive wastewater
CN114408982A (en) * 2021-12-09 2022-04-29 西安航天华威化工生物工程有限公司 System and method for recycling ternary cathode material

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201208526Y (en) * 2008-04-17 2009-03-18 上海闰铭精密技术有限公司 Catalyst recovery filter
CN203060925U (en) * 2012-12-21 2013-07-17 卓易环保设备（上海）有限公司 Titanium dioxide neutralization wastewater treatment system
CN111747551A (en) * 2020-08-04 2020-10-09 武汉钢铁有限公司 Recycling treatment method of silicon steel magnesium oxide wastewater
CN213885276U (en) * 2020-10-15 2021-08-06 飞潮（无锡）过滤技术有限公司 Magnesium oxide wastewater treatment filtration system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201208526Y (en) * 2008-04-17 2009-03-18 上海闰铭精密技术有限公司 Catalyst recovery filter
CN203060925U (en) * 2012-12-21 2013-07-17 卓易环保设备（上海）有限公司 Titanium dioxide neutralization wastewater treatment system
CN111747551A (en) * 2020-08-04 2020-10-09 武汉钢铁有限公司 Recycling treatment method of silicon steel magnesium oxide wastewater
CN213885276U (en) * 2020-10-15 2021-08-06 飞潮（无锡）过滤技术有限公司 Magnesium oxide wastewater treatment filtration system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113053552A (en) * 2021-03-12 2021-06-29 中国核电工程有限公司 Method and device for pretreating non-process radioactive wastewater
CN114408982A (en) * 2021-12-09 2022-04-29 西安航天华威化工生物工程有限公司 System and method for recycling ternary cathode material

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