CN202912714U - Aluminum hydroxide preparation system by using production wastewater of precoating sensitized plates - Google Patents
Aluminum hydroxide preparation system by using production wastewater of precoating sensitized plates Download PDFInfo
- Publication number
- CN202912714U CN202912714U CN201220558917XU CN201220558917U CN202912714U CN 202912714 U CN202912714 U CN 202912714U CN 201220558917X U CN201220558917X U CN 201220558917XU CN 201220558917 U CN201220558917 U CN 201220558917U CN 202912714 U CN202912714 U CN 202912714U
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- Prior art keywords
- aluminum hydroxide
- caustic soda
- filter press
- aluminium hydroxide
- neutralization
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
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- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The technique of the utility model provides an aluminum hydroxide preparation system by using production wastewater of precoating sensitized plates, which can realize comprehensive utilization of solid wastes by processing acidic and alkaline wastewater produced in the production of the precoating sensitized plates to prepare and obtain solid aluminum hydroxide. The system comprises neutralization pools for collecting the production wastewater, neutralizing production waste gas and precipitating aluminum hydroxide, a liquid caustic soda adding device for adding liquid caustic soda into the neutralization pools, a frame filter press for performing dewatering on the aluminum hydroxide, and a drying machine for stirring and drying the dewatered aluminum hydroxide, wherein the outlet of the liquid caustic soda adding device is communicated with the neutralization pools; a feeding port of the frame filter press is communicated with the outlets at the bottoms of the neutralization pools; and the feeding port of the drying machine is communicated with the discharging port of the frame filter press.
Description
Technical field
The utility model relates to the production wastewater treatment system in the pre-coating light sensitive plate production, specifically, acidity, the alkaline waste water comprehensive utilization that to contain aluminium in the pre-coating light sensitive plate production, produce the aluminium hydroxide product of high fineness, thereby reduce even stop solid waste to the pollution pressure of environment and realize that the pre-coating light sensitive plate factory effluent of the effective recycling of resource prepares the aluminium hydroxide system.
Background technology
When pre-coating light sensitive plate is produced, there is multistage to need acidity, alkalescence to contain the aluminium working fluid in the wet section electrochemical reaction process, such as electrolysis section (needing acidity to contain the aluminium working fluid), anodic oxidation section (needing acidity to contain the aluminium working fluid), ash disposal section (needing alkalescence to contain the aluminium working fluid).For guaranteeing quality product, when aluminium content reaches finite concentration in these several working fluids, must change liquid, aluminium wastewater produces thus.The present general way of industry is that the waste liquid that said process produces is carried out centralized collection, adopt liquid caustic soda that its pH value is adjusted to neutrality, use plate and frame(type)filter press that waste liquid is carried out press filtration behind the aluminum hydroxide precipitation, and the aluminium hydroxide solid waste water content that generates is generally about 80%-90%, be difficult to process again, the ground landfill is all selected to select by general producer, and this has just caused solid waste pollution to environment, has also caused the waste of resource simultaneously.
Take 10 m/mins speed of a motor vehicle production lines as example, the aluminium hydroxide press filtration waste residue that produce every day all need be transported to suitable landfill place and carry out landfill, waste of manpower and fund greatly about 2 tons (wet slags).
The utility model content
The purpose of present technique provides a kind ofly processes, prepares solid aluminum hydroxide with the acidity and the alkaline waste water that produce in the pre-coating light sensitive plate production, realizes that the pre-coating light sensitive plate factory effluent of solid waste comprehensive utilization prepares the aluminium hydroxide system.
This pre-coating light sensitive plate factory effluent prepares the aluminium hydroxide system, comprise for the neutralization tank of collecting factory effluent and process gas and precipitated aluminium hydroxide, be used for adding the liquid caustic soda adding apparatus of liquid caustic soda in the neutralization tank, for the plate and frame(type)filter press that aluminium hydroxide is dewatered, be used for the aluminium hydroxide after the dehydration is stirred dry drying machine; The outlet of liquid caustic soda adding apparatus communicates with neutralization tank, and the opening for feed of plate and frame(type)filter press communicates with the outlet at bottom of neutralization tank, and the opening for feed of drying machine communicates with the discharge port of plate and frame(type)filter press.Preferably, neutralization tank has two.
The beneficial effect of present technique: from acidic and alkaline waste water and the flushing waste water of pre-coating light sensitive plate production line discharge, collect (two neutralization tanks use by turns) through neutralization tank, add liquid caustic soda by the liquid caustic soda adding apparatus, its pH value is adjusted between the 6-8, after staticly settling, with the supernatant liquid discharging, lower sediment is carried out press filtration with plate and frame(type)filter press process, obtain pie aluminium hydroxide mud cake.The mud cake drying machine of packing into is stirred drying treatment, make the aluminium hydroxide dry powder of powdery and granular mixing.The aluminium hydroxide dry powder purity that makes according to its whiteness, granularity, can be applied in fields such as producing polymerize aluminum chloride, fire retardant between 96%-98%.Present technique has realized the comprehensive utilization of solid waste, has reduced the pollution that solid waste produces environment.
Description of drawings
Fig. 1 is that factory effluent prepares the aluminium hydroxide system schematic.
Embodiment
By reference to the accompanying drawings present technique is further described below by embodiment.
The factory effluent that produces from production plant, is enabled 2# neutralization tank 2 and is collected factory effluents after water level is the highest through 1# neutralization tank 1 centralized collection.Waste liquid in the 1# neutralization tank is processed, waste liquid after the collection is still aobvious acid, need to add liquid caustic soda with liquid caustic soda adding apparatus 3 waste liquid of collecting is carried out the adjusting of pH value, when the pH value is 6-8, aluminum hydroxide precipitation is more abundant, the supernatant liquid of draining uses plate and frame(type)filter press 4 to carry out press filtration to lower sediment.Two neutralization tanks use and so forth in turn.
The aluminium hydroxide mud cake input drying machine 5 that plate and frame(type)filter press 4 is press-filtered out carries out negative pressure stirring drying, obtains aluminium hydroxide dry powder.Be save energy, it is naturally predrying be before drying to concentrate first the aluminium hydroxide mud cake to carry out sunlight.
After implementing this technology, the aluminium hydroxide refuse need not to transport outward landfill, and gained aluminium hydroxide dry powder can be sold to polymerize aluminum chloride manufacturer, also can be used as fire retardant and sells, and has realized efficient utilization of resource.
Claims (2)
1. the pre-coating light sensitive plate factory effluent prepares the aluminium hydroxide system, it is characterized in that: it comprises for the neutralization tank of collecting factory effluent and process gas and precipitated aluminium hydroxide, be used for adding the liquid caustic soda adding apparatus of liquid caustic soda in the neutralization tank, for the plate and frame(type)filter press that aluminium hydroxide is dewatered, be used for the aluminium hydroxide after the dehydration is stirred dry drying machine; The outlet of liquid caustic soda adding apparatus communicates with neutralization tank, and the opening for feed of plate and frame(type)filter press communicates with the outlet at bottom of neutralization tank, and the opening for feed of drying machine communicates with the discharge port of plate and frame(type)filter press.
2. pre-coating light sensitive plate factory effluent as claimed in claim 1 prepares the aluminium hydroxide system, it is characterized in that: neutralization tank has two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220558917XU CN202912714U (en) | 2012-10-29 | 2012-10-29 | Aluminum hydroxide preparation system by using production wastewater of precoating sensitized plates |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220558917XU CN202912714U (en) | 2012-10-29 | 2012-10-29 | Aluminum hydroxide preparation system by using production wastewater of precoating sensitized plates |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202912714U true CN202912714U (en) | 2013-05-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220558917XU Expired - Fee Related CN202912714U (en) | 2012-10-29 | 2012-10-29 | Aluminum hydroxide preparation system by using production wastewater of precoating sensitized plates |
Country Status (1)
| Country | Link |
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| CN (1) | CN202912714U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111003845A (en) * | 2019-12-26 | 2020-04-14 | 宜宾丝丽雅股份有限公司 | System and process for treating alkaline waste liquid in viscose fiber production |
-
2012
- 2012-10-29 CN CN201220558917XU patent/CN202912714U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111003845A (en) * | 2019-12-26 | 2020-04-14 | 宜宾丝丽雅股份有限公司 | System and process for treating alkaline waste liquid in viscose fiber production |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130501 Termination date: 20181029 |