CN100413793C - Treatment and special treater of waste water in making salt and nitro-group - Google Patents
Treatment and special treater of waste water in making salt and nitro-group Download PDFInfo
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- CN100413793C CN100413793C CNB2006100080181A CN200610008018A CN100413793C CN 100413793 C CN100413793 C CN 100413793C CN B2006100080181 A CNB2006100080181 A CN B2006100080181A CN 200610008018 A CN200610008018 A CN 200610008018A CN 100413793 C CN100413793 C CN 100413793C
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- waste water
- tank body
- salt
- slurry
- nacl
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Abstract
The present invention provides a method and a special device thereof for treating waste water of nitre or salt preparation. The method for treating waste water of nitre or salt preparation comprises the following steps: step 1, heating: the waste water is heated to the temperature of 60 to 100 DEG C; step 2, salt addition: NaCl is added to the waste water to control Na2SO4 on a saturation point; step 3, thickening: the treated waste water of the step 2 is thickened to realize the separation by crystallization of the Na2SO4; and step 4, separation: Na2SO4 crystals and NaCl slurry are separated from the waste water treated in step 3. The special device used for treating waste water of nitre or salt preparation comprises a tank, a circulation pipe, a circulation pump, a waste water inlet, an opening used for adding salt, an outlet of Na2SO4 slurry, an overflow opening, etc., wherein one end of the circulation pipe is arranged at the upper part of the tank, the other end is arranged at the lower part of the tank, the circulation pipe is provided with the circulation pump, the waste water inlet and the opening used for adding salt, the outlet of Na2SO4 slurry is arranged at the lower part of the tank, and the overflow opening is arranged at the upper part of the tank. The method and a special device thereof for treating waste water of nitre or salt preparation have the advantages of simple processes, little device investment and good separation effect, all resources can be effectively recovered, and zero discharge of waste water is realized.
Description
Technical field
The present invention relates to a kind of method of wastewater treatment and specific equipment thereof, refer to especially contain lower concentration Na in system nitre or the salt-making process
2SO
4Wastewater treatment method and specific equipment thereof.
Background technology
Produce Na
2SO
4Waste water in contain usually＞NaCl of 60g/L, contain usually＞Na of 30g/L and produce in the waste water of NaCl
2SO
4Can adopt the salt made from earth containing a comparatively high percentage of sodium chloride co-production technology in Switzerland's Suhl longevity to handle the above-mentioned Na of containing at present
2SO
4Waste water from salt making, but this facility investment is more, Technology is complicated, separation costs is high, inferior separating effect.Still there is not at present the system nitre waste water that known technology can be used for handling the above-mentioned NaCl of containing.
Summary of the invention
The object of the present invention is to provide a kind of method of wastewater treatment and specific equipment thereof of making nitre or salt manufacturing, the Na in the efficient recovery waste water
2SO
4, the NaCl composition, and can reduce investment outlay, reduce cost, technology is easy.
A kind of method of wastewater treatment of making nitre or salt manufacturing of the present invention comprises the following steps:
(1) heats
Waste water is heated to 60～100 ℃, and keeps this temperature.
(2) with salt
In waste water, add NaCl, make the Na in the waste water
2SO
4Just in time be controlled on the saturation point.
(3) thickening
Handle for carry out thickening through waste water, make Na wherein with the salt step process
2SO
4Crystallization is separated out.
(4) separate
For waste water, utilize whizzer or other existing technology to separate Na through the thickening step process
2SO
4Crystal and NaCl slurry.
A kind of wastewater treatment specific equipment of making nitre or salt manufacturing of the present invention comprises tank body, circulation tube, recycle pump, waste water import, Jia Yankou, Na
2SO
4Slurry outlet, spillway etc., wherein be provided with heating unit and suspension bed in the tank body, described circulation tube one end is located at the top of tank body, the other end is located at the below of tank body bottom, suspension bed, be provided with recycle pump in this circulation tube pipeline, the liquid on tank body top is transported to the tank body bottom, waste water import and Jia Yankou are arranged on this circulation tube, be respectively applied for replenish jar intravital waste water and in waste water with salt, described Na
2SO
4The top of tank body bottom, suspension bed is located in the slurry outlet, and described spillway is located at tank body top.
A kind of working process of making the wastewater treatment specific equipment of nitre or salt manufacturing of the present invention is: at first inject pending waste water and make jar intravital liquid level arrive the position of spillway in tank body from the waste water import, utilize heating unit to make it remain on 60～100 ℃ simultaneously.Subsequently, recycle pump continues the liquid on tank body top is transported to the below of tank body bottom, suspension bed, from adding an amount of NaCl with the salt mouth, makes the Na in the waste water simultaneously
2SO
4Be controlled on the saturation point.In working cycle, saturated Na
2SO
4Slurry is from Na
2SO
4The slurry outlet is flowed out.Utilize existing technological processs such as thickener, whizzer again, realize Na
2SO
4Crystal separates with the NaCl slurry.NaCl slurry after separating can be used to extract NaCl once more.
The advantage of a kind of system nitre (salt manufacturing) method of wastewater treatment of the present invention and specific equipment thereof is: technology is simple, equipment less investment, good separating effect, can reclaim whole resources effectively, realizes the zero release of waste water simultaneously.
The present invention will be further described below in conjunction with drawings and Examples.
Description of drawings
Fig. 1 is the structural representation of a kind of system nitre of the present invention (salt manufacturing) wastewater treatment specific equipment.
Embodiment
Embodiment 1:
The described a kind of system nitre of present embodiment (salt manufacturing) method of wastewater treatment comprises the following steps:
1, heats
Waste water is heated to 60 ℃, and keeps this temperature.
2, with salt
In waste water, add NaCl, make the Na in the waste water
2SO
4Just in time be controlled on the saturation point.
3, thickening
Carry out thickening for the waste water of handling through step 2 and handle, make Na wherein
2SO
4Crystallization is separated out.
4, separate
For the waste water of handling through step 3, utilize whizzer or other existing technology to separate Na
2SO
4Crystal and NaCl slurry.
Embodiment 2:
The described a kind of system nitre of present embodiment (salt manufacturing) method of wastewater treatment comprises the following steps:
1, heats
Waste water is heated to 100 ℃, and keeps this temperature.
2, with salt
In waste water, add NaCl, make the Na in the waste water
2SO
4Just in time be controlled on the saturation point.
3, thickening
Adopting thickener or other existing thickening apparatus to carry out thickening for the waste water of handling through step 2 handles, makes the Na in the waste water
2SO
4Crystallization is separated out.
4, separate
For the waste water of handling through step 3, utilize whizzer or other existing technology to separate Na
2SO
4Crystal and NaCl slurry.
Embodiment 3:
The described a kind of wastewater treatment specific equipment of making nitre or salt manufacturing of present embodiment comprises tank body 2, circulation tube 7, recycle pump 8, waste water import 5, with salt mouth 6, Na
2SO
4Slurry outlet 4, spillway 1 and suspension bed 3 etc., wherein tank body 2 is a cylindrical vessel, be provided with heating unit in the tank body 2, tank body 2 bottoms are provided with suspension bed 3, described circulation tube 7 one ends are located at the top of tank body 2, the other end is located at tank body 2 bottoms, the below of suspension bed 3, this follows in the bad pipe 7 and is provided with recycle pump 8, the liquid on tank body 2 tops is transported to tank body 2 bottoms, also be provided with waste water import 5 on this circulation tube 7 and with salt mouth 6, be respectively applied for the waste water that replenishes in the tank body 2 and in waste water with salt, tank body 2 bottoms are located in described Na2SO4 slurry outlet 4, the top of suspension bed 3, described spillway 1 is located at tank body top, and valve is installed.
Claims (2)
1. a waste water from salt making treatment process specific equipment is characterized in that: comprise tank body, circulation tube, recycle pump, waste water import, Jia Yankou, Na
2SO
4Slurry outlet and spillway wherein are provided with heating unit and suspension bed in the tank body, described circulation tube one end is connected the top of tank body, the other end is connected in the below of tank body bottom suspension bed, be provided with recycle pump in the circulation tube pipeline, waste water import and Jia Yankou are arranged on the circulation tube, described Na
2SO
4The top of tank body bottom suspension bed is located in the slurry outlet, and described spillway is located at tank body top.
2. waste water from salt making treatment process is characterized in that: adopt the described waste water from salt making treatment process of claim 1 specific equipment to carry out wastewater treatment,
(1) waste water of salt manufacturing is injected in tank body by the waste water import of this equipment, and makes jar intravital liquid level arrive the position of spillway; Utilize heating unit to make its temperature remain on 60～100 ℃ simultaneously;
(2) by the lasting below that the liquid on tank body top is transported to tank body bottom, suspension bed by circulation tube of recycle pump; From adding an amount of NaCl, make the Na in the waste water simultaneously with the salt mouth
2SO
4Be controlled on the saturation point;
(3) saturated Na
2SO
4Slurry is through Na
2SO
4The slurry outlet is flowed out and through conventional thickener its crystallization is separated out;
(4) the process whizzer is with Na
2SO
4Crystal separates with the NaCl slurry.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100080181A CN100413793C (en) | 2006-02-23 | 2006-02-23 | Treatment and special treater of waste water in making salt and nitro-group |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100080181A CN100413793C (en) | 2006-02-23 | 2006-02-23 | Treatment and special treater of waste water in making salt and nitro-group |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1817808A CN1817808A (en) | 2006-08-16 |
| CN100413793C true CN100413793C (en) | 2008-08-27 |
Family
ID=36918051
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100080181A Expired - Fee Related CN100413793C (en) | 2006-02-23 | 2006-02-23 | Treatment and special treater of waste water in making salt and nitro-group |
Country Status (1)
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| CN (1) | CN100413793C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105967208A (en) * | 2016-05-05 | 2016-09-28 | 上海弘佳能源科技有限公司 | Sodium sulfate and sodium chloride mixed wastewater separation method and separation apparatus thereof |
Citations (9)
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|---|---|---|---|---|
| JPS51107280A (en) * | 1975-03-19 | 1976-09-22 | Ebara Infilco | |
| CN85100373A (en) * | 1985-04-01 | 1986-01-10 | 轻工业部长沙市设计院 | Rock salt molten halogen coproduction refined salt and sodium sulfate |
| JPS6150692A (en) * | 1985-01-21 | 1986-03-12 | Toyobo Co Ltd | Photosensitive resin solution containing water-soluble polyamide |
| EP0301452A1 (en) * | 1987-07-31 | 1989-02-01 | Balcke-Dürr AG | Method for treating waste water from flue gas purifying plants |
| CN1119625A (en) * | 1995-04-20 | 1996-04-03 | 化学工业部长沙化学矿山设计研究院 | Method for preparation of potassium sulfate by sodium sulfate method |
| CN1182406A (en) * | 1995-02-28 | 1998-05-20 | 玉城佑春 | Salt making method and apparatus |
| US6235203B1 (en) * | 1998-06-23 | 2001-05-22 | Industrial Technology Research Institute | Crystallization process for removing fluoride from waste water |
| CN1362370A (en) * | 2000-12-31 | 2002-08-07 | 中国科学院青海盐湖研究所 | Sulfuric acid and potassium salting-out process to prepare potassium sulfate and composition fertilizer |
| JP2004283736A (en) * | 2003-03-24 | 2004-10-14 | Nishiyama Stainless Chem Kk | Treating method of waste solution |
-
2006
- 2006-02-23 CN CNB2006100080181A patent/CN100413793C/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51107280A (en) * | 1975-03-19 | 1976-09-22 | Ebara Infilco | |
| JPS6150692A (en) * | 1985-01-21 | 1986-03-12 | Toyobo Co Ltd | Photosensitive resin solution containing water-soluble polyamide |
| CN85100373A (en) * | 1985-04-01 | 1986-01-10 | 轻工业部长沙市设计院 | Rock salt molten halogen coproduction refined salt and sodium sulfate |
| EP0301452A1 (en) * | 1987-07-31 | 1989-02-01 | Balcke-Dürr AG | Method for treating waste water from flue gas purifying plants |
| CN1182406A (en) * | 1995-02-28 | 1998-05-20 | 玉城佑春 | Salt making method and apparatus |
| CN1119625A (en) * | 1995-04-20 | 1996-04-03 | 化学工业部长沙化学矿山设计研究院 | Method for preparation of potassium sulfate by sodium sulfate method |
| US6235203B1 (en) * | 1998-06-23 | 2001-05-22 | Industrial Technology Research Institute | Crystallization process for removing fluoride from waste water |
| CN1362370A (en) * | 2000-12-31 | 2002-08-07 | 中国科学院青海盐湖研究所 | Sulfuric acid and potassium salting-out process to prepare potassium sulfate and composition fertilizer |
| JP2004283736A (en) * | 2003-03-24 | 2004-10-14 | Nishiyama Stainless Chem Kk | Treating method of waste solution |
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| Title |
|---|
| AC废水中硫酸钠的回收及其纯化. 陈家华等.同济大学学报，第14卷第1期. 1986 |
| AC废水中硫酸钠的回收及其纯化. 陈家华等.同济大学学报，第14卷第1期. 1986 * |
| 含硝制盐废水循环使用探讨. 谢雪源.环境科学与技术，第3期. 1996 |
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| Publication number | Publication date |
|---|---|
| CN1817808A (en) | 2006-08-16 |
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