CN105347548A - Flexible circuit board production wastewater discharge process - Google Patents
Flexible circuit board production wastewater discharge process Download PDFInfo
- Publication number
- CN105347548A CN105347548A CN201510746973.4A CN201510746973A CN105347548A CN 105347548 A CN105347548 A CN 105347548A CN 201510746973 A CN201510746973 A CN 201510746973A CN 105347548 A CN105347548 A CN 105347548A
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- China
- Prior art keywords
- electroplating wastewater
- standard
- wastewater
- receiving tank
- sewage
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Classifications
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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
- C02F1/44—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
-
- 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
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
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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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/16—Nature of the water, waste water, sewage or sludge to be treated from metallurgical processes, i.e. from the production, refining or treatment of metals, e.g. galvanic wastes
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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)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention discloses a flexible circuit board production wastewater discharge process, which includes chemical precipitation, membrane solid-liquid separation, RO membrane reuse, wastewater detection and other steps. The invention involves more than two groups of collecting troughs, treated wastewater is stored in the discharge water collecting troughs and is discharged after it is detected to be up to standard, and if not up to standard, sewage in the tank is lifted to a retreatment system to be treated to meet the standard and is then discharged. The process provided by the invention has the advantages of simple technology, low cost, and stable and up-to-standard water quality.
Description
Technical field
The present invention relates to sewage treatment area, particularly relate to a kind of flexible PCB factory effluent discharge technology.
Background technology
Along with the continuous reinforcement of the deepening constantly of national environmental protection theory, environmental protective measure, environmental administration in all parts of the country all increases the efforts of investigation and prosecution to the row of stealing, not qualified discharge; Although many measures have been done by various places environmental administration in order to stable water outlet is up to standard, the phenomenon that discharge water exceeds standard has still had generation.
1. discharge the reason exceeded standard
The reason causing the normal Sewage treatment systems discharge water run to exceed standard mainly contains the following aspects.
sewage heterogeneity causes discharge to exceed standard:the corresponding processing unit of sewage works is that the pollutant kind that provides according to pollutant discharging unit and load carry out designing when designing, but at the erratic behavior due to sewage discharge, Pollutants in Wastewater total amount or concentration period is caused suddenly to raise, exceed the processing power of system, cause sewage not up to standard, in order to tackle this kind of change, sewage works devises the water quality of long period, regulate and store sewage containing filth amount and the water yield in runoff investigation pond, ensure that sewage works normal table ground runs, but in actually operating, because the interim emission concentration of sewage is too high, equalizing tank regulating power is inadequate, the requirement of sewage quality of regulating and storing can not be met, cause subsequent treatment process because sewage is containing dirty load rising, draining is not up to standard, this type of is not up to standard not only can work the mischief to environment, and can cause serious financial loss to blowdown enterprise.
wastewater influent change of water quality causes discharge to exceed standard:sewage quality change easily causes sewage plant water outlet not up to standard, because, the setting of sewage treatment facility designs targetedly after taking into full account treatment effect and construction cost, and the change of sewage works influent quality can impact effluent quality, even causes effluent quality not up to standard, as Zhangpu Electroplate Factory sewage works, because being mixed into a small amount of halogenide in certain process section cyanide wastewater, the halogenide be mixed into not only affects waste water flocculating sedimentation effect but also creates adverse influence to broken cyanide process, finally cause the accident that sewage works prussiate and copper exceed standard, after accident occurs, find in cause of accident troubleshooting procedure, this kind of halogenide is that process section maintenance mistiming enters in cyanide wastewater collecting tank, and sewage works technological design does not comprise this kind of halid process, again because, treatment process is less than the emergency processing facility of the phenomenon that do not exceed standard for this kind, finally cause the major accident that sewage works water outlet is not up to standard.
sewage works operational management is improper causes discharge to exceed standard:the normal operation of sewage works depends on good operation management, as the saying goes 3 division technique 7 points management.In common process runs, the steady running impact of bookkeeping on sewage plant is very large.Some novel process adopts Automated condtrol, greatly can improve the efficiency of management of sewage works; But in order to ensure the steady running of sewage plant equipment, artificial inspection remains requisite, sewage plant long-time running, ageing equipment fault is also a water outlet important factor not up to standard.
Therefore, sewage disposal stand in technique end arrange ensure technique be necessary.2. existing guarantee technique
sewage on-line monitoring system:sewage on-line monitoring system is all kinds of monitoring instruments by being contained in discharge outlet place, and the sewage of discharge is carried out to automatic monitor for continuously and uploads to a kind of monitoring equipment of expected end receiver (environmental administration); The advantage of this kind of monitoring method is, can automatic continuous monitoring, reduces the workload of hand sampling monitoring; Main
shortcominghave: digestion solution and test agent exist
secondary pollution; Apparatus measures
be subject toother ions in water sample
interference, cause parameter inaccurate;
useful range is less; Heavy metal content determination techniques also imperfection, the data reappearance of most total copper, total nickel determinator between 2% ~ 10%,
accuracy is poor; The position of monitoring is water port, once monitor defective, sewage also discharges, and is difficult to carry out effective remedial measures.
So, a kind of cost low and again effective guarantee technique be necessary for the stably reaching standard of sewage plant water outlet.As shown in Figure 1, existing sewage disposal discharge technology comprises the steps such as chemical precipitation, film solid-liquid separation, the reuse of RO film, directly no longer detect through discharge outlet discharge at electroplating wastewater after above-mentioned steps process, may also be discharged away for some below standard waste water.
Summary of the invention
The object of the present invention is to provide the flexible PCB factory effluent discharge technology that a kind of cost is low, water conditioning is up to standard.
For achieving the above object, technical solution of the present invention is:
The present invention is a kind of flexible PCB factory effluent discharge technology, comprise the following steps: (1) chemical precipitation: add sodium hydroxide in electroplating wastewater, after regulating electroplating wastewater to alkalescence and pH value to adjust to 8-9 by 2-3, Cu in waste water ion and hydroxide ion are combined into copper hydroxide, add flocculant poly aluminum chloride (PAC) simultaneously, make copper hydroxide macrobead, naturally fall into, obtain the electroplating wastewater after falling into; (2) film solid-liquid separation: the electroplating wastewater after falling into carries out solid-liquid separation through macromolecule member material, the electroplating wastewater through film is process electroplating wastewater up to standard, and meanwhile, the solid hydrogen copper oxide particle without film precipitates, and forms mud; (3) RO film reuse: electroplating wastewater up to standard for the process point ion of permeable membrane to waste water is separated, and then realize conductivity of waste water decline, the cleanliness factor of electroplating wastewater promotes close to tap water, simultaneously by Treated sewage reusing; (4) wastewater recycle: insert in receiving tank by the electroplating wastewater close to tap water, detects the electroplating wastewater in receiving tank: if detect up to standard, discharged by the electroplating wastewater in receiving tank through discharge outlet; If detect below standard, the electroplating wastewater in receiving tank is re-started step (1)-(3).
Described receiving tank has two, and two receiving tanks are connected in parallel.
In described step (2), solid hydrogen cupric oxide, sodium hydrate particle are carried out compression dehydration, so that packed solid transfer by mud pressure mud machine.
After adopting such scheme, owing to the present invention includes the receiving tank of more than two groups, the sewage processed is stored in discharge water receiving tank, to be detected up to standard after discharge again, if not up to standard, by the sewage lifting in this pond body to secondary treatment system, process up to standard after discharge again, there is the advantage that technique is simple, cost is low, water conditioning is up to standard.Receiving tank can adopt the PE tank of low cost, FRP tank or CS groove; Secondary treatment system can arrange separately and also can be integrated into end protection technique, is particularly useful for the sewage works adopting membrane process, adopts intermittent discharge secondary treatment system can be combined with the dense water treatment system of RO, can greatly reduce costs; Ensure sewage works standard water discharge, because this technique up to standardly to be discharged for detecting, not up to standardly not discharge again, can ensure that stable water outlet is up to standard.Secondary treatment system does not take or takies front-end processing technique less simultaneously, can not impact Sewage treatment systems processing power.
Below in conjunction with the drawings and specific embodiments, the present invention is further illustrated.
Accompanying drawing explanation
Fig. 1 is the schema commonly using sewage disposal discharge technology;
Fig. 2 is schema of the present invention.
Embodiment
As shown in Figure 2, the present invention is a kind of flexible PCB factory effluent discharge technology, comprises the following steps:
(1) chemical precipitation: add sodium hydroxide in electroplating wastewater, after regulating electroplating wastewater to alkalescence and pH value to adjust to 8-9 by 2-3, Cu in waste water ion and hydroxide ion are combined into copper hydroxide, add flocculant poly aluminum chloride (PAC) simultaneously, make copper hydroxide macrobead, naturally fall into, obtain the electroplating wastewater after falling into;
(2) film solid-liquid separation: the electroplating wastewater after falling into carries out solid-liquid separation through macromolecule member material, the electroplating wastewater through film is process electroplating wastewater up to standard, and meanwhile, the solid hydrogen copper oxide particle without film precipitates, and forms mud; Solid hydrogen copper oxide particle is carried out compression dehydration by mud pressure mud machine, so that packed solid transfer, i.e. sludge dewatering step.
(3) RO film reuse: electroplating wastewater up to standard for the process point ion of permeable membrane to waste water is separated, and then realize conductivity of waste water decline, the cleanliness factor of electroplating wastewater promotes close to tap water, simultaneously by Treated sewage reusing;
(4) wastewater recycle: the electroplating wastewater close to tap water is inserted in two receiving tanks be connected in parallel, the electroplating wastewater in receiving tank is detected: if detect up to standard, the electroplating wastewater in receiving tank is discharged through discharge outlet; If detect below standard, the electroplating wastewater in receiving tank is re-started step (1)-(3).In actually operating, often organize discharge water receiving tank and be all furnished with thief hole, after one group of receiving tank full water, hand sampling detects, if it is qualified to detect, opens normal drain and enter city planting ductwork through effluent standard mouth, if detect defective, open reprocessing discharge outlet, be promoted to out after system processes again through reprocessing lift pump and enter batchwise discharge system, detect rear discharge up to standard.
System's composition of the present invention:
Intermittent blowdown system is made up of discharge water receiving tank, reprocessing lift pump and electric control system.
Intermittent blowdown system generally has 2 groups of discharge water receiving tanks, two groups of alternately water inlets, detect, draining, often organizing the residence time meets this time (being generally 8 ~ 16hr) needed for group waste water reprocessing.
Emphasis of the present invention is just: set up receiving tank and detect the electroplating wastewater in receiving tank.
The above, be only present pre-ferred embodiments, therefore can not limit scope of the invention process with this, and the equivalence namely done according to the present patent application the scope of the claims and description changes and modifies, and all should still remain within the scope of the patent.
Claims (3)
1. a flexible PCB factory effluent discharge technology, it is characterized in that: comprise the following steps: (1) chemical precipitation: add sodium hydroxide in electroplating wastewater, after regulating electroplating wastewater to alkalescence and pH value to adjust to 8-9 by 2-3, Cu in waste water ion and hydroxide ion are combined into copper hydroxide, add flocculant poly aluminum chloride (PAC) simultaneously, make copper hydroxide macrobead, naturally fall into, obtain the electroplating wastewater after falling into; (2) film solid-liquid separation: the electroplating wastewater after falling into carries out solid-liquid separation through macromolecule member material, the electroplating wastewater through film is process electroplating wastewater up to standard, and meanwhile, the solid hydrogen copper oxide particle without film precipitates, and forms mud; (3) RO film reuse: electroplating wastewater up to standard for the process point ion of permeable membrane to waste water is separated, and then realize conductivity of waste water decline, the cleanliness factor of electroplating wastewater promotes close to tap water, simultaneously by Treated sewage reusing; (4) wastewater recycle: insert in receiving tank by the electroplating wastewater close to tap water, detects the electroplating wastewater in receiving tank: if detect up to standard, discharged by the electroplating wastewater in receiving tank through discharge outlet; If detect below standard, the electroplating wastewater in receiving tank is re-started step (1)-(3).
2. flexible PCB factory effluent discharge technology according to claim 1, is characterized in that: described receiving tank has two, and two receiving tanks are connected in parallel.
3. flexible PCB factory effluent discharge technology according to claim 1, is characterized in that: in step (2), and solid hydrogen cupric oxide, sodium hydrate particle are carried out compression dehydration, so that packed solid transfer by mud pressure mud machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510746973.4A CN105347548A (en) | 2015-11-06 | 2015-11-06 | Flexible circuit board production wastewater discharge process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510746973.4A CN105347548A (en) | 2015-11-06 | 2015-11-06 | Flexible circuit board production wastewater discharge process |
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| Publication Number | Publication Date |
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| CN105347548A true CN105347548A (en) | 2016-02-24 |
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| CN201510746973.4A Pending CN105347548A (en) | 2015-11-06 | 2015-11-06 | Flexible circuit board production wastewater discharge process |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105712542A (en) * | 2016-04-22 | 2016-06-29 | 天津特立环保科技有限公司 | Hydrofluoric acid wastewater recycling treatment device for photovoltaic and semiconductor industries and technology thereof |
| CN107827286A (en) * | 2017-11-30 | 2018-03-23 | 宁波中骏森驰汽车零部件股份有限公司 | A kind of electroplating wastewater recovery process and electroplating wastewater reclaimer |
| CN112299507A (en) * | 2020-10-12 | 2021-02-02 | 联合环境水处理(大丰)有限公司 | Industrial wastewater standard discharge detection method |
Citations (5)
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| WO2004024636A1 (en) * | 2002-08-31 | 2004-03-25 | Henkel Kommanditgesellschaft Auf Aktien | Multi-stage method for reprocessing waste water from a phosphating process, using a subacid ion exchanger |
| CN1803659A (en) * | 2006-01-13 | 2006-07-19 | 江苏金麟环境科技有限公司 | Multi-stage treatment process for electroplating wastewater of centralized park zone |
| CN202717647U (en) * | 2012-08-01 | 2013-02-06 | 威洁（石狮）中水回用技术有限公司 | Recovering treatment system of copper and chromium in electroplating wastewater |
| CN102923876A (en) * | 2012-10-11 | 2013-02-13 | 上海瑞勇实业有限公司 | System for recovering heavy metals and recycling wastewater through treating metal wastewater by using tube type filter membrane method |
| CN103102025A (en) * | 2013-01-29 | 2013-05-15 | 江西省城乡规划设计研究院 | Method for online recovering heavy metal resource from heavy metal waste water |
-
2015
- 2015-11-06 CN CN201510746973.4A patent/CN105347548A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004024636A1 (en) * | 2002-08-31 | 2004-03-25 | Henkel Kommanditgesellschaft Auf Aktien | Multi-stage method for reprocessing waste water from a phosphating process, using a subacid ion exchanger |
| CN1803659A (en) * | 2006-01-13 | 2006-07-19 | 江苏金麟环境科技有限公司 | Multi-stage treatment process for electroplating wastewater of centralized park zone |
| CN202717647U (en) * | 2012-08-01 | 2013-02-06 | 威洁（石狮）中水回用技术有限公司 | Recovering treatment system of copper and chromium in electroplating wastewater |
| CN102923876A (en) * | 2012-10-11 | 2013-02-13 | 上海瑞勇实业有限公司 | System for recovering heavy metals and recycling wastewater through treating metal wastewater by using tube type filter membrane method |
| CN103102025A (en) * | 2013-01-29 | 2013-05-15 | 江西省城乡规划设计研究院 | Method for online recovering heavy metal resource from heavy metal waste water |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105712542A (en) * | 2016-04-22 | 2016-06-29 | 天津特立环保科技有限公司 | Hydrofluoric acid wastewater recycling treatment device for photovoltaic and semiconductor industries and technology thereof |
| CN107827286A (en) * | 2017-11-30 | 2018-03-23 | 宁波中骏森驰汽车零部件股份有限公司 | A kind of electroplating wastewater recovery process and electroplating wastewater reclaimer |
| CN112299507A (en) * | 2020-10-12 | 2021-02-02 | 联合环境水处理(大丰)有限公司 | Industrial wastewater standard discharge detection method |
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Application publication date: 20160224 |