CN103351067A - Washing wastewater reuse method - Google Patents
Washing wastewater reuse method Download PDFInfo
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- CN103351067A CN103351067A CN2013103086531A CN201310308653A CN103351067A CN 103351067 A CN103351067 A CN 103351067A CN 2013103086531 A CN2013103086531 A CN 2013103086531A CN 201310308653 A CN201310308653 A CN 201310308653A CN 103351067 A CN103351067 A CN 103351067A
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- wash water
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- water recovery
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Abstract
The invention relates to a washing wastewater reuse method, and belongs to the technical field of environmental protection. The method comprises the following steps: a, filtering and separating: filtering and separating washing wastewater to obtain a first sediment and wastewater; b, collecting foams: adding air into the wastewater to collect the formed foams, then adding PAC (Poly Aluminium Chloride) and PAM (polyacrylamide), stirring, and performing solid-liquid separation to obtain clear liquid and a second sediment; c, filtering and disinfecting the clear liquid, and adjusting the pH value to be neutral to obtain clean water. The method has the benefits that the washing wastewater is effectively processed, the GB89782 emission standards can be met, and recycling and reusing can be realized.
Description
Technical field
The invention belongs to environmental technology field, be specifically related to a kind of wash water recovery and utilization method.
Background technology
Along with professional the developing rapidly of washing, wash water increases day by day.According to washing process, wash water mainly comprises laundrywastes, Cleaning Wastewater and drying waste water, and wherein laundrywastes accounts for 30%, Cleaning Wastewater accounts for 60%, dry waste water accounts for 10%.After testing, contain a large amount of staple fibres, detergent foam in the wash water, CODcr value and LAS are higher, sometimes also with very dark color.According to the first discharge standard among the GB89782, wash water does not obviously meet emission standard, if directly discharging will produce ill effect to environment.
The existing method of processing wash water mainly contains Physical, chemical method, biological process etc., exists treatment effect bad, and shortcoming that can not direct reuse also easily causes the further pollution of environment.
Summary of the invention
The purpose of this invention is to provide a kind of wash water recovery and utilization method, can effectively process wash water, reach emission standard, and can also do bath water by direct reuse.
The technical solution used in the present invention is a kind of wash water recovery and utilization method, may further comprise the steps:
A, filtration, separation: wash water is filtered, separate, get the first throw out and sewage;
B, collection foam: pass into air in described sewage, the foam that produces is collected, and then drop into PAC and PAM, stir, solid-liquid separation gets clear liquid and the second throw out;
C, described clear liquid are sterilized after filtration, regulate the pH value to neutral, get clear water.
As preferably, filter among the described step a that the grid that adopts with geomembrane carries out.
As preferably, the first throw out gets first and extrudes sewage and the first solid dirt through the press filtration of filter press device among the described step a; Described the first extrusion sewage merges to and carries out recycle in the described wash water.
As preferably, the consumption that passes into air among the described step b is that per 1 liter of described sewage needs 6～9 liters.
As preferably, the consumption that drops into PAC among the described step b is that per 1 liter of described sewage needs 700mg～1200mg; The consumption that drops into PAM is that per 1 liter of described sewage needs 700mg～1200mg.
As preferably, solid-liquid separation adopts deadweight anti-filter pipe to carry out among the described step b.
As preferably, in described deadweight anti-filter pipe, pass into pressurized air, be used for the inverted filter of cleaning deadweight anti-filter pipe.
As preferably, the second throw out gets second and extrudes sewage and the second solid dirt through the press filtration of filter press device among the described step b; Described the second extrusion sewage merges to and carries out recycle in the described wash water.
As preferably, sterilize among the described step c and adopt the interpolation dioxide peroxide to carry out.
Beneficial effect of the present invention is:
(1) can effectively process wash water, meet the emission standard of GB89782, wherein the average removal rate of LAS is about 90%;
(2) can make the water resources cycling and reutilization, effectively saving water resource reduces the enterprise operation cost;
(3) technique simple possible, easy handling is promoted, and convenient management, and operation is efficient.
Embodiment
For making those skilled in the art understand in detail production technique of the present invention and technique effect, the below further introduces application of the present invention and technique effect with concrete production instance.
Embodiment one:
Adopt the grid with geomembrane to filter wash water, separate, get the first throw out and sewage; The amount that passes into 6 litres of air by per 1 liter of sewage in described sewage passes into pressurized air, and the foam that contains LAS that produces is collected reuse, and then drops into PAC and PAM, stirs, and adopts deadweight anti-filter pipe to carry out solid-liquid separation, gets clear liquid and the second throw out; Described clear liquid adds the dioxide peroxide that accounts for whole clear liquid weight 0.01% and carries out disinfection after filtration, regulates the pH value to neutral, gets clear water.Wherein, the first throw out gets first and extrudes sewage and the first solid dirt through the press filtration of filter press device, and described the first extrusion sewage merges to and carries out recycle in the wash water; The second throw out gets second and extrudes sewage and the second solid dirt through the press filtration of filter press device, and described the second extrusion sewage merges to and carries out recycle in the wash water.The consumption that drops into PAC is that per 1 liter of described sewage needs 923mg; The consumption that drops into PAM is that per 1 liter of described sewage needs 923mg.
Embodiment two:
Adopt the grid with geomembrane to filter wash water, separate, get the first throw out and sewage; The amount that passes into 9 litres of air by per 1 liter of sewage in described sewage passes into pressurized air, and the foam that contains LAS that produces is collected reuse, and then drops into PAC and PAM, stirs, and adopts deadweight anti-filter pipe to carry out solid-liquid separation, gets clear liquid and the second throw out; Described clear liquid adds the dioxide peroxide that accounts for whole clear liquid weight 0.003% and carries out disinfection after filtration, regulates the pH value to neutral, gets clear water.Wherein, the first throw out gets first and extrudes sewage and the first solid dirt through the press filtration of filter press device, and described the first extrusion sewage merges to and carries out recycle in the wash water; The second throw out gets second and extrudes sewage and the second solid dirt through the press filtration of filter press device, and described the second extrusion sewage merges to and carries out recycle in the wash water.The consumption that drops into PAC is that per 1 liter of described sewage needs 1000mg; The consumption that drops into PAM is that per 1 liter of described sewage needs 1000mg.
In addition, in described deadweight anti-filter pipe, pass into pressurized air, be used for the inverted filter of cleaning deadweight anti-filter pipe.Wherein, inverted filter can be made by geomembrane.
Embodiment three:
Adopt the grid with geomembrane to filter wash water, separate, get the first throw out and sewage; The amount that passes into 7 litres of air by per 1 liter of sewage in described sewage passes into pressurized air, and the foam that contains LAS that produces is collected reuse, and then drops into PAC and PAM, stirs, and adopts deadweight anti-filter pipe to carry out solid-liquid separation, gets clear liquid and the second throw out; Described clear liquid adds the dioxide peroxide that accounts for whole clear liquid weight 0.02% and carries out disinfection after filtration, regulates the pH value to neutral, gets clear water.Wherein, the first throw out gets first and extrudes sewage and the first solid dirt through the press filtration of filter press device, and described the first extrusion sewage merges to and carries out recycle in the wash water; The second throw out gets second and extrudes sewage and the second solid dirt through the press filtration of filter press device, and described the second extrusion sewage merges to and carries out recycle in the wash water.The consumption that drops into PAC is that per 1 liter of described sewage needs 1100mg; The consumption that drops into PAM is that per 1 liter of described sewage needs 900mg.
In addition, in described deadweight anti-filter pipe, pass into pressurized air, be used for the inverted filter of cleaning deadweight anti-filter pipe.Wherein, inverted filter can be made by geomembrane.
Embodiment four:
Adopt the grid with geomembrane to filter wash water, separate, get the first throw out and sewage; The amount that passes into 8 litres of air by per 1 liter of sewage in described sewage passes into pressurized air, and the foam that contains LAS that produces is collected reuse, and then drops into PAC and PAM, stirs, and adopts deadweight anti-filter pipe to carry out solid-liquid separation, gets clear liquid and the second throw out; Described clear liquid adds the dioxide peroxide that accounts for whole clear liquid weight 0.008% and carries out disinfection after filtration, regulates the pH value to neutral, gets clear water.Wherein, the first throw out gets first and extrudes sewage and the first solid dirt through the press filtration of filter press device, and described the first extrusion sewage merges to and carries out recycle in the wash water; The second throw out gets second and extrudes sewage and the second solid dirt through the press filtration of filter press device, and described the second extrusion sewage merges to and carries out recycle in the wash water.The consumption that drops into PAC is that per 1 liter of described sewage needs 700mg; The consumption that drops into PAM is that per 1 liter of described sewage needs 1200mg.
In addition, in described deadweight anti-filter pipe, pass into pressurized air, be used for the inverted filter of cleaning deadweight anti-filter pipe.Wherein, inverted filter can be made by geomembrane.
For showing technique effect of the present invention, the water quality situation of wash water, several coagulating agent are processed the situation of wash water to the spy and the water quality situation of above-described embodiment gained clear water is done following check, sees table 1, table 2 and table 3 for details.
The water quality information slip of table 1 wash water
Several coagulating agent of table 2 are processed the as a result synopsis of wash water
The water quality information slip of table 3 clear water
| Index name | Unit | Embodiment one | Embodiment two | Embodiment three | Embodiment four |
| pH | ? | 7.3 | 7.5 | 7.4 | 7.3 |
| CODcr | (mg/L) | 42 | 37 | 44 | 38 |
| BOD 5 | (mg/L) | 5.3 | 4.6 | 5.1 | 4.8 |
| S?S | (mg/L) | 15.3 | 14.2 | 15.7 | 14.3 |
| Colourity | ? | 12 | 10 | 12 | 11 |
| Phosphorus | (mg/L) | 0.0043 | 0.0052 | 0.0038 | 0.0045 |
| LAS | (mg/L) | 9.5 | 9.7 | 9.6 | 9.0 |
As can be seen from the above table, the wash water that adopts the inventive method to process, effect is remarkable, and the gained clear water meets discharging standards, and can directly be re-used as bath water and recycle, and has effectively saved water resources.
The above technical scheme that the embodiment of the invention is provided is described in detail, used specific case herein principle and the embodiment of the embodiment of the invention are set forth, the explanation of above embodiment is only applicable to help to understand the principle of the embodiment of the invention; Simultaneously, for one of ordinary skill in the art, according to the embodiment of the invention, all will change on embodiment and range of application, in sum, this description should not be construed as limitation of the present invention.
Claims (9)
1. wash water recovery and utilization method is characterized in that: may further comprise the steps:
A, filtration, separation: wash water is filtered, separate, get the first throw out and sewage;
B, collection foam: pass into air in described sewage, the foam that produces is collected, and then drop into PAC and PAM, stir, solid-liquid separation gets clear liquid and the second throw out;
C, described clear liquid are sterilized after filtration, regulate the pH value to neutral, get clear water.
2. wash water recovery and utilization method according to claim 1 is characterized in that: filter among the described step a that the grid that adopts with geomembrane carries out.
3. wash water recovery and utilization method according to claim 1 is characterized in that: the first throw out gets first and extrudes sewage and the first solid dirt through the press filtration of filter press device among the described step a; Described the first extrusion sewage merges to and carries out recycle in the described wash water.
4. wash water recovery and utilization method according to claim 1 is characterized in that: the consumption that passes into air among the described step b is that per 1 liter of described sewage needs 6～9 liters.
5. wash water recovery and utilization method according to claim 1 is characterized in that: the consumption that drops into PAC among the described step b is that per 1 liter of described sewage needs 700mg～1200mg; The consumption that drops into PAM is that per 1 liter of described sewage needs 700mg～1200mg.
6. wash water recovery and utilization method according to claim 1 is characterized in that: solid-liquid separation adopts deadweight anti-filter pipe to carry out among the described step b.
7. wash water recovery and utilization method according to claim 6 is characterized in that: pass into pressurized air in described deadweight anti-filter pipe.
8. wash water recovery and utilization method according to claim 1 is characterized in that: the second throw out gets second and extrudes sewage and the second solid dirt through the press filtration of filter press device among the described step b; Described the second extrusion sewage merges to and carries out recycle in the described wash water.
9. wash water recovery and utilization method according to claim 1 is characterized in that: sterilize among the described step c and adopt the interpolation dioxide peroxide to carry out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103086531A CN103351067A (en) | 2013-07-22 | 2013-07-22 | Washing wastewater reuse method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103086531A CN103351067A (en) | 2013-07-22 | 2013-07-22 | Washing wastewater reuse method |
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| CN103351067A true CN103351067A (en) | 2013-10-16 |
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| CN2013103086531A Pending CN103351067A (en) | 2013-07-22 | 2013-07-22 | Washing wastewater reuse method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109133424A (en) * | 2018-09-25 | 2019-01-04 | 安顺市永烁科技有限公司 | A kind of processing equipment of hotel's cloth grass wash water |
| CN109231642A (en) * | 2018-09-25 | 2019-01-18 | 安顺优品洗涤有限公司 | A kind of purification method of wash water |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1073663A (en) * | 1992-10-15 | 1993-06-30 | 天津市经纬针织厂 | Washing and dyeing wastewater treatment and renovation |
| KR20050100582A (en) * | 2005-09-28 | 2005-10-19 | 삼영이엔테크 주식회사 | Recycling system and the method of wastewater |
| CN103073119A (en) * | 2012-09-14 | 2013-05-01 | 大连格兰清水环境工程有限公司 | Oil-containing emulsion wastewater treatment method and apparatus thereof |
-
2013
- 2013-07-22 CN CN2013103086531A patent/CN103351067A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1073663A (en) * | 1992-10-15 | 1993-06-30 | 天津市经纬针织厂 | Washing and dyeing wastewater treatment and renovation |
| KR20050100582A (en) * | 2005-09-28 | 2005-10-19 | 삼영이엔테크 주식회사 | Recycling system and the method of wastewater |
| CN103073119A (en) * | 2012-09-14 | 2013-05-01 | 大连格兰清水环境工程有限公司 | Oil-containing emulsion wastewater treatment method and apparatus thereof |
Non-Patent Citations (1)
| Title |
|---|
| 朱健 等: "洗衣废水处理工程实践", 《工业水处理》, vol. 29, no. 5, 30 May 2009 (2009-05-30) * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109133424A (en) * | 2018-09-25 | 2019-01-04 | 安顺市永烁科技有限公司 | A kind of processing equipment of hotel's cloth grass wash water |
| CN109231642A (en) * | 2018-09-25 | 2019-01-18 | 安顺优品洗涤有限公司 | A kind of purification method of wash water |
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