CN114538687B - Wastewater treatment system for surface treatment of lead frame - Google Patents
Wastewater treatment system for surface treatment of lead frame Download PDFInfo
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- CN114538687B CN114538687B CN202210160800.4A CN202210160800A CN114538687B CN 114538687 B CN114538687 B CN 114538687B CN 202210160800 A CN202210160800 A CN 202210160800A CN 114538687 B CN114538687 B CN 114538687B
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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
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/048—Purification of waste water by evaporation
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/76—Treatment of water, waste water, or sewage by oxidation with halogens or compounds of halogens
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
- C02F2001/425—Treatment of water, waste water, or sewage by ion-exchange using cation exchangers
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
- C02F2001/427—Treatment of water, waste water, or sewage by ion-exchange using mixed beds
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
- C02F2101/18—Cyanides
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
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- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
Abstract
The invention provides a wastewater treatment system for surface treatment of a lead frame, and relates to the technical field of semiconductor processing wastewater treatment. The wastewater treatment system for lead frame surface treatment comprises a heavy metal ion exchanger, a silver ion adsorber, a first chemical precipitation tank, a second chemical precipitation tank, a plate-frame filter press, a yin-yang mixed bed and a terminal filter, wherein the silver ion adsorber is used for treating low-silver wastewater from a workshop, and then adding the obtained silver-containing regeneration liquid into the first chemical precipitation tank. The acid-base water, the low-cyanide water and the low-silver wastewater generated in each workshop respectively enter the corresponding wastewater pools, and then are treated by the corresponding subsystems, so that series flow and mixing are avoided, the highest reuse rate of pure water for reuse in the workshop is up to 80%, the removal rate of corresponding pollutants is up to more than 98%, the whole system can be automatically controlled, the labor cost is reduced, and the operation cost is reduced by 20% compared with that of the traditional treatment method.
Description
Technical Field
The invention relates to the technical field of semiconductor processing wastewater treatment, in particular to a wastewater treatment system for surface treatment of a lead frame.
Background
The lead frame is used as a chip carrier of an integrated circuit, is a key structural member for realizing the electrical connection between a leading-out end of an internal circuit of a chip and an external lead by means of bonding materials (gold wires, aluminum wires and copper wires) to form an electrical circuit, plays a role of a bridge Liang Zuoyong connected with an external lead, needs to use the lead frame in most semiconductor integrated blocks, and is an important basic material in the electronic information industry.
The lead frame workshop can generate alkaline water, low cyanide water and low silver wastewater, and heavy metal ions are mixed in the wastewater, so that the wastewater generated in the lead frame workshop can be discharged after being treated to reach the standard.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a wastewater treatment system for surface treatment of lead frames, which solves the problem that the sequential treatment of wastewater in lead frame workshops easily causes new pollutants or generates new pollutants, so that the treatment efficiency is reduced.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: a wastewater treatment system for lead frame surface treatment comprises a heavy metal ion exchanger, a silver ion adsorber, a first chemical precipitation tank, a second chemical precipitation tank, a plate and frame filter press, a cation-anion mixed bed and a tail end filter;
the silver ion adsorber is used for treating low-silver wastewater from a workshop, then adding the obtained silver-containing regenerated liquid into a first chemical precipitation tank, and discharging the residual wastewater a into a comprehensive water collecting tank;
the second chemical sedimentation tank receives low-cyanide water subjected to cyanide breaking treatment twice, supernatant of the first chemical sedimentation tank and concentrated liquid generated by a low-temperature evaporator, the second chemical sedimentation tank carries out reaction sedimentation, an upper-layer product is sequentially treated by a filtering water tank and the low-temperature evaporator, obtained wastewater B is discharged into a comprehensive water tank, then the wastewater B is sequentially treated by a quartz filter, an activated carbon filter, a precision filter and fiber ultrafiltration equipment, the obtained ultrafiltration concentrated water is sent into an adjusting tank and subjected to pH adjustment, obtained wastewater d is sequentially subjected to 1-stage reverse osmosis treatment a, 2-stage reverse osmosis treatment and high-speed mixed bed treatment and enters a high-purity water tank, concentrated water A generated by the 1-stage reverse osmosis treatment a in the process is discharged into a water discharge tank and then is treated by a tail end filter, concentrated water B generated by the 2-stage reverse osmosis treatment is sent to the fiber ultrafiltration equipment treatment process, high-speed regenerated liquid generated by the high-speed mixed bed treatment is discharged into the first chemical sedimentation tank, and high-purity water in the high-purity water tank and pure water from a mixed bed are together sent to an intermediate water tank;
the lower-layer solid wastes of the second chemical sedimentation tank and the first chemical sedimentation tank are treated by a plate and frame filter press, and the filter press liquid is discharged into a filter water tank;
the heavy metal ion exchanger obtains heavy metal regeneration liquid and waste water c with the raw materials processing from the regulating reservoir, waste water c discharges into synthesizes the header tank in, heavy metal regeneration liquid gets into first chemical precipitation pond.
Preferably, the wastewater a is discharged from a discharge port of a workshop where the silver ion adsorber is located.
Preferably, the mixed water of the high-purity water and the pure water entering the intermediate water tank is supplied to a workshop for reuse.
Preferably, acid-base water from a workshop is also fed into the regulating reservoir.
Preferably, the pure water of the yin-yang mixed bed is a product of running water which enters the pure water tank through the multi-media filter and the 1-stage reverse osmosis treatment b in sequence.
Preferably, the two cyanogen breaking treatments are both carried out by sodium hypochlorite.
(III) advantageous effects
The invention provides a wastewater treatment system for surface treatment of a lead frame. The method has the following beneficial effects:
according to the invention, the acid-base water, the low-cyanide water and the low-silver wastewater generated in each workshop respectively enter the corresponding wastewater pools, and then are treated by the corresponding subsystems, so that no series flow and no mixing are ensured, the highest reuse rate of pure water for reuse in the workshop is up to 80%, the removal rate of corresponding pollutants is up to more than 98%, the whole system can be automatically controlled, the labor cost is reduced, and the operation cost is reduced by 20% compared with that of the traditional treatment method.
Drawings
FIG. 1 is a schematic diagram of the system of the present invention;
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example (b):
as shown in fig. 1, an embodiment of the present invention provides a wastewater treatment system for surface treatment of lead frames, including a heavy metal ion exchanger, a silver ion adsorber, a first chemical precipitation tank, a second chemical precipitation tank, a plate and frame filter press, a yin-yang mixed bed, and a final filter;
the silver ion adsorber is used for treating low-silver wastewater from a workshop, then adding the obtained silver-containing regenerated liquid into a first chemical precipitation tank, discharging residual wastewater a from a discharge port of the workshop where the silver ion adsorber is located to a comprehensive water collecting tank, connecting the discharge port of the workshop where the silver ion adsorber is located with the comprehensive water collecting tank through a pipeline, configuring a valve at the position where the pipeline is connected with the comprehensive water collecting tank, and collecting the low-silver wastewater in the corresponding low-silver wastewater tank of the workshop;
the second chemical sedimentation tank receives low-cyanogen water subjected to twice cyanogen breaking treatment by using sodium hypochlorite, supernatant of the first chemical sedimentation tank and concentrated solution generated by a low-temperature evaporator, the second chemical sedimentation tank carries out reaction sedimentation, an upper layer product is sequentially treated by a filtering water tank and the low-temperature evaporator, obtained wastewater B is discharged into a comprehensive water tank, then sequentially treated by a quartz filter, an activated carbon filter, a precision filter and fiber ultrafiltration equipment, obtained ultrafiltration concentrated water is sent into an adjusting tank and subjected to pH adjustment, obtained wastewater d sequentially undergoes 1-stage reverse osmosis treatment a, 2-stage reverse osmosis treatment and high-speed mixed bed treatment and enters a high-purity water tank, concentrated water A generated by the 1-stage reverse osmosis treatment a in the process is discharged into a water discharge tank and then treated by a tail end filter, the discharged water is pure water and can be reused in a workshop, concentrated water B generated by the 2-stage reverse osmosis treatment is sent into a fiber ultrafiltration equipment treatment process, high-speed regenerated solution generated by the high-speed mixed bed treatment is discharged into the first chemical sedimentation tank, the high-purity water in the high-purity water tank and the pure water from the anion-cation mixed bed are sent into an intermediate water tank, the intermediate water tank and the high-cyanide breaking water tank, and the high-purity water is collected in a low-purity mixed water workshop, and the high-cyanogen water before the cyanogen treatment workshop;
treating lower-layer solid wastes of the second chemical sedimentation tank and the first chemical sedimentation tank through a plate and frame type filter press, discharging filter press liquid into a filter water tank, and intensively collecting other residual products treated by the plate and frame type filter press, wherein precipitates in the second chemical sedimentation tank and the first chemical sedimentation tank can be fully collected;
the heavy metal ion exchanger is used for treating the raw materials from the regulating reservoir to obtain heavy metal regeneration liquid and wastewater c, the wastewater c is discharged into the comprehensive water collecting tank, the heavy metal regeneration liquid enters the first chemical precipitation tank, and the raw materials are acid-base water and ultrafiltration concentrated water from a workshop.
The pure water of the mixed bed is the product of tap water entering the pure water tank through the multi-media filter and the 1-stage reverse osmosis treatment b in sequence, and the pure water for semiconductor processing can be obtained through the treatment of the mixed bed.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. A effluent disposal system for lead frame surface treatment which characterized in that: the system comprises a heavy metal ion exchanger, a silver ion adsorber, a first chemical sedimentation tank, a second chemical sedimentation tank, a plate-and-frame filter press, a cation-anion mixed bed and a tail end filter, wherein alkaline water, low cyanide water and low salt wastewater generated in the whole workshop can respectively enter corresponding wastewater pools to be collected;
the silver ion adsorber is used for treating low-silver wastewater from a workshop, then adding the obtained silver-containing regeneration liquid into a first chemical precipitation tank, discharging the residual wastewater a into a comprehensive water collecting tank, and feeding the supernatant of the first chemical precipitation tank into a second chemical precipitation tank;
low-cyanide wastewater from a workshop enters a second chemical precipitation tank after two times of cyanide breaking treatment, an upper-layer product is sequentially treated by a filter water tank and a low-temperature evaporator after reaction and precipitation in the second chemical precipitation tank, the obtained wastewater B is discharged into a comprehensive water tank, a concentrated solution generated by the low-temperature evaporator enters the second chemical precipitation tank, then a water body in the comprehensive water tank is sequentially treated by a quartz filter, an activated carbon filter, a precision filter and fiber ultrafiltration equipment, the obtained ultrafiltration concentrated water is sent into a regulating tank and subjected to pH regulation, the obtained ultrafiltration permeation wastewater d is sequentially subjected to 1-stage reverse osmosis treatment a, 2-stage reverse osmosis treatment and high-speed mixed bed treatment and then enters a high-purity water tank, in the process, concentrated water A generated by the 1-stage reverse osmosis treatment a is discharged to a water discharge tank and then is treated by a tail end filter, concentrated water B generated by the 2-stage reverse osmosis treatment is sent to the fiber ultrafiltration equipment for treatment, a high-speed regenerated liquid generated by the high-speed mixed bed treatment is discharged into the first chemical precipitation tank, and the high-purity water in the high-purity water tank and pure water from a yin-yang mixed bed are sent to an intermediate water tank;
the lower-layer solid wastes of the second chemical sedimentation tank and the first chemical sedimentation tank are treated by a plate-and-frame filter press, and the filter press liquid is discharged into a filter water tank;
the heavy metal ion exchanger is used for treating raw materials from the regulating tank to obtain heavy metal regeneration liquid and waste water c, the waste water c is discharged into the comprehensive water collecting tank, and the heavy metal regeneration liquid enters the first chemical precipitation tank;
acid-base water from a workshop enters the regulating tank;
the pure water of the yin-yang mixed bed is a product of tap water which enters a pure water tank through a multi-media filter and a 1-stage reverse osmosis treatment b in sequence, and the pure water for semiconductor processing can be obtained through the treatment of the yin-yang mixed bed.
2. The wastewater treatment system for lead frame surface treatment according to claim 1, wherein: and the wastewater a is discharged from a discharge port of a workshop where the silver ion adsorber is located.
3. The wastewater treatment system for lead frame surface treatment according to claim 1, wherein: and the mixed water of the high-purity water and the pure water entering the intermediate water tank is reused in the workshop.
4. The wastewater treatment system for lead frame surface treatment according to claim 1, wherein: and the two times of cyanogen breaking treatment are carried out by sodium hypochlorite.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210160800.4A CN114538687B (en) | 2022-02-22 | 2022-02-22 | Wastewater treatment system for surface treatment of lead frame |
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| CN202210160800.4A CN114538687B (en) | 2022-02-22 | 2022-02-22 | Wastewater treatment system for surface treatment of lead frame |
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| CN114538687A CN114538687A (en) | 2022-05-27 |
| CN114538687B true CN114538687B (en) | 2022-11-11 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR970043336A (en) * | 1995-12-01 | 1997-07-26 | 김무 | Recycling Method of Waste Organic Solution Emitted from On-Peeling Process |
| CN106495403A (en) * | 2016-11-25 | 2017-03-15 | 惠州金茂源环保科技有限公司 | A kind of zero-emission treatment method for electroplating wastewater |
| CN109516629A (en) * | 2019-01-03 | 2019-03-26 | 上海雷迪埃电子有限公司 | Electroplating wastewater zero treatment process |
| CN110498542A (en) * | 2019-07-31 | 2019-11-26 | 江苏金博源环保科技有限公司 | Standard electroplating waste processing process and device |
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2022
- 2022-02-22 CN CN202210160800.4A patent/CN114538687B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR970043336A (en) * | 1995-12-01 | 1997-07-26 | 김무 | Recycling Method of Waste Organic Solution Emitted from On-Peeling Process |
| CN106495403A (en) * | 2016-11-25 | 2017-03-15 | 惠州金茂源环保科技有限公司 | A kind of zero-emission treatment method for electroplating wastewater |
| CN109516629A (en) * | 2019-01-03 | 2019-03-26 | 上海雷迪埃电子有限公司 | Electroplating wastewater zero treatment process |
| CN110498542A (en) * | 2019-07-31 | 2019-11-26 | 江苏金博源环保科技有限公司 | Standard electroplating waste processing process and device |
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| CN114538687A (en) | 2022-05-27 |
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Denomination of invention: A Wastewater Treatment System for Surface Treatment of Lead Frame Effective date of registration: 20230728 Granted publication date: 20221111 Pledgee: Bank of China Limited by Share Ltd. Guangzhou Panyu branch Pledgor: Guangzhou Fengjiang Microelectronics Co.,Ltd. Registration number: Y2023980050228 |
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