CN1157336C - Treating process for effluent from washing alkaline melt materials or sintered material in production of serial zirconium products - Google Patents
Treating process for effluent from washing alkaline melt materials or sintered material in production of serial zirconium products Download PDFInfo
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- CN1157336C CN1157336C CNB011222778A CN01122277A CN1157336C CN 1157336 C CN1157336 C CN 1157336C CN B011222778 A CNB011222778 A CN B011222778A CN 01122277 A CN01122277 A CN 01122277A CN 1157336 C CN1157336 C CN 1157336C
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- sintered material
- washing
- sewage
- alkali fusion
- treatment method
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Abstract
The present invention provides a technology for treating waste water generated by water washing of alkali fusion material or sintered material in production of zirconium serial products; more specifically, alkali waste water or sintered material is cooled and crystallized to produce sodium metasilicate, alkaline liquor is concentrated and recovered, or sodium silicate of high modulus is used for regulating the modulus of the alkali waste water, and sodium metasilicate and sodium polysilicate are produced by the methods of concentration, crystallization temperature control, etc. The technology can treat a large amount of the alkali waste water generated by the water washing of alkali fusion material or sintered material in the production of zirconium serial products of chemical engineering, produce the sodium metasilicate and sodium polysilicate, recover sodium hydroxide and change the alkali waste water into products with high value, so the waste water is treated and used.
Description
Technical field
The invention provides a kind of sewage water treatment method that alkali fusion material in the serial zirconium products or sintered material washing produce of producing, belong to sewage disposal and utilize technical field.
Background technology
In the process of producing zirconium chemical industry series product, zirconium English sand is mixed sintering or alkali fusion with caustic soda or soda ash, make alkali fusion material or sintered material, manufacturing technique requirent is the washing of alkali fusion material or sintered material, remove wherein water glass and unnecessary caustic soda, therefore produce a large amount of alkaline sewages.To the also not effective no sewage of above-mentioned alkaline sewage, discharge of wastewater treating method, majority is direct discharge, and is very serious to the pollution of environment at present, and relevant producer is also ordered stopping production because of the direct blowdown of alkaline sewage.
Summary of the invention
The purpose of this invention is to provide can the alkaline sewage that alkali fusion material in the zirconium chemical industry series product or sintered material washing produce be handled to producing, a kind of sewage water treatment method of decontamination and utilization of waste material.
The object of the present invention is achieved like this:
A kind ofly produce the sewage water treatment method that alkali fusion material in the serial zirconium products or sintered material washing produce, it is characterized in that taking following steps: 1. alkali fusion material or sintered material were mixed by water material weight ratio with water in about 2: 1, isolate alkaline sewage, and remove impurity wherein; 2. with the alkaline sewage crystallization, Tc remains on-20 ℃～50 ℃; 3. crystallized stock is separated, solid is a Starso.Wherein isolate alkaline sewage and remove wherein that the method for impurity can adopt physical method, also can adopt physics, chemically combined method.
The sewage water treatment method that the washing of alkali fusion material or sintered material produces in the described production serial zirconium products, Starso is the Starso that contains crystal water, as metasilicate pentahydrate sodium, non-hydrate sodium metasilicate etc.
The sewage water treatment method that the washing of alkali fusion material or sintered material produces in the described production serial zirconium products, can be before crystallization, analyze the content of silicon-dioxide in the alkaline sewage, add bubble flower alkali as auxiliary material, make fluid,matching, with fluid,matching directly or be dewatered to proper concn, the control certain temperature is brought out and is made its sufficient crystallising, solid-liquid separation, drying and crushing, promptly obtains the sodium silicate solid of various forms.
The sewage water treatment method that the washing of alkali fusion material or sintered material produces in the described production serial zirconium products, sodium silicate solid are anhydrous, moisture, crystal, the Starso of noncrystal different degree of dryings, sodium polysilicate.
The sewage water treatment method that the washing of alkali fusion material or sintered material produces in the described production serial zirconium products, fluid,matching the modulus scope be 0.9～2.2.
The present invention can handle a large amount of alkaline sewages of alkali fusion material in the production serial zirconium products or sintered material washing generation, produce Starso, sodium polysilicate, also recyclable caustic soda, the change alkaline sewage is product of higher value, make sewage obtain handling and utilizing, not having sewage discharge, fundamentally eliminated the pollution to environment, is a kind of effective sewage water treatment method.
Embodiment
Embodiment 1:
1. alkali fusion material or sintered material are pressed water material weight ratio and mixed at 2: 1, isolate alkaline sewage and remove wherein impurity with whizzer;
2. alkaline sewage is put into the crystallizer stir about 48 hours of lowering the temperature gradually and remaining on 5 ℃ of scopes, allowed its sufficient crystallising;
3. the material in the crystallizer is taken out, put into whizzer and carry out centrifugation, isolating mother liquor is industrial alkali lye, and the solid material is non-hydrate sodium metasilicate.
Embodiment 2:
1. alkali fusion material or sintered material are pressed water material weight ratio and mixed at 2: 1, isolate alkaline sewage and remove wherein impurity with whizzer;
2. analyzing the content of silicon-dioxide in the alkaline sewage, is that about 3 bubble flower alkali adds in the alkaline sewage as auxiliary material with modulus, makes fluid,matching, and the content of control bubble flower alkali to make the fluid,matching modulus be 0.9～1.1.
3. fluid,matching is put into concentration tank, it is about 58% that indirect heating is concentrated to solid content, puts into the crystallization granulation device again, and the crystallization control temperature just obtains metasilicate pentahydrate sodium at 5 ℃～20 ℃.
Claims (7)
1, a kind ofly produces the sewage water treatment method that alkali fusion material in the serial zirconium products or sintered material washing produce, it is characterized in that taking following steps: 1. alkali fusion material or sintered material are mixed by water material weight ratio with water at 2: 1, isolate alkaline sewage, and remove impurity wherein; 2. with the alkaline sewage crystallization, Tc remains on-20 ℃～50 ℃; 3. crystallized stock is separated, solid is a Starso.
2, the sewage water treatment method that the washing of alkali fusion material or sintered material produces in the production serial zirconium products as claimed in claim 1 is characterized in that: the alkaline sewage that 1. step is obtained directly or be concentrated to the finite concentration post crystallization.
3, the sewage water treatment method that the washing of alkali fusion material or sintered material produces in the production serial zirconium products as claimed in claim 1, it is characterized in that: Starso is the Starso that contains crystal water.
4, the sewage water treatment method that the washing of alkali fusion material or sintered material produces in the production serial zirconium products as claimed in claim 3, it is characterized in that: Starso is metasilicate pentahydrate sodium, non-hydrate sodium metasilicate.
5, the sewage water treatment method that the washing of alkali fusion material or sintered material produces in the production serial zirconium products as claimed in claim 1, it is characterized in that: before crystallization, analyze the content of silicon-dioxide in the alkaline sewage, add bubble flower alkali as auxiliary material, make fluid,matching, with fluid,matching directly or be dewatered to proper concn, the control certain temperature is brought out and is made its sufficient crystallising, solid-liquid separation, drying and crushing, promptly obtains the sodium silicate solid of various forms.
6, the sewage water treatment method that the washing of alkali fusion material or sintered material produces in the production serial zirconium products as claimed in claim 5 is characterized in that: sodium silicate solid is anhydrous, moisture, crystal, the Starso of noncrystal different degree of dryings, sodium polysilicate.
7, the sewage water treatment method that produces as alkali fusion material or sintered material washing in the right 5 described production serial zirconium products is characterized in that: fluid,matching the optimal modulus scope be 0.9～2.2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011222778A CN1157336C (en) | 2001-04-03 | 2001-07-05 | Treating process for effluent from washing alkaline melt materials or sintered material in production of serial zirconium products |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN011079460 | 2001-04-03 | ||
| CN01107946 | 2001-04-03 | ||
| CN01107946.0 | 2001-04-03 | ||
| CNB011222778A CN1157336C (en) | 2001-04-03 | 2001-07-05 | Treating process for effluent from washing alkaline melt materials or sintered material in production of serial zirconium products |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1336329A CN1336329A (en) | 2002-02-20 |
| CN1157336C true CN1157336C (en) | 2004-07-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011222778A Expired - Fee Related CN1157336C (en) | 2001-04-03 | 2001-07-05 | Treating process for effluent from washing alkaline melt materials or sintered material in production of serial zirconium products |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1157336C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103011463B (en) * | 2012-12-07 | 2014-01-08 | 常州大学 | Method for removing zirconium in sewage |
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2001
- 2001-07-05 CN CNB011222778A patent/CN1157336C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN1336329A (en) | 2002-02-20 |
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