CN106477759A - The method that ozone, activated carbon combination process the Organic substance in high slat-containing wastewater - Google Patents
The method that ozone, activated carbon combination process the Organic substance in high slat-containing wastewater Download PDFInfo
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- CN106477759A CN106477759A CN201510548775.7A CN201510548775A CN106477759A CN 106477759 A CN106477759 A CN 106477759A CN 201510548775 A CN201510548775 A CN 201510548775A CN 106477759 A CN106477759 A CN 106477759A
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- activated carbon
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- containing wastewater
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Abstract
The invention discloses a kind of ozone, activated carbon are combined the method processing the Organic substance in high slat-containing wastewater, the method comprises the following steps：After raw wastewater is aoxidized by ozone bubbling form, the amount according to the Organic substance of residual in waste water, using the Organic substance in suitably excessive activated carbon adsorption waste water, carries out auxiliary heating during activated carbon adsorption.The inventive method can effectively remove the Organic substance in high slat-containing wastewater, and the clearance of COD may be up to 99.6%, obvious to water quality decolorizing effect, and can significantly reduce the consumption of activated carbon, reduces secondary pollution.
Description
Technical field
The invention belongs to chemical technology field and in particular to a kind of ozone, activated carbon combination process high slat-containing wastewater in organic
The method of thing.
Background technology
Organic substance intractability in high slat-containing wastewater is larger, and especially resource saline (as potassium chloride, lithium chloride etc.) is processed
Need to recycle its salt, if processed with biological degradation method swallowing salt therein firstly the need of with halophilic bacteria, but therein
Organic substance can affect the growth of halophilic bacteria again, if especially as potassium chloride, lithium chloride etc. are worth relatively high waste water with thermophilic
Salt bacterium process if, potassium salt, lithium salts loss amount very big, be unfavorable for the recycling of salt resource.Reclaim salt resource waste water first
First the Organic substance in waste water should be eliminated the quality that guarantee reclaims salt.
Also technology is had to adopt the Organic substance in ferrum carbon filler pretreatment saline, its pretreatment degree is relatively low, can only process 50%
Organic substance, and produce substantial amounts of ferrum carbon slag mud, form secondary pollution, and ferrum oxidation of coal needs first by the pH value of saline
Adjust to 2-3, technical process is relatively complicated, equipment, technological requirement are all higher.
Content of the invention
The purpose of the present invention is to overcome above-mentioned weak point, provides a kind of ozone, activated carbon combination to process in high slat-containing wastewater
The method of Organic substance.The present invention is combined with activated carbon using ozone, and the Organic substance in saline is eliminated as far as possible.
The purpose of the present invention is achieved in the following ways：
A kind of method that ozone, activated carbon combination process the Organic substance in high slat-containing wastewater, the method comprises the following steps：Will
Raw wastewater is aoxidized by ozone bubbling form, and the amount according to the Organic substance of residual in waste water is using suitably excessive activated carbon
Organic substance in absorption waste water, carries out auxiliary heating during activated carbon adsorption.
In above-mentioned waste water, in 2000ppm, the consumption of activated carbon is the 0.05%-0.2% of waste water weight to COD content.(give up
Every mg/lCOD in water, needs the 0.000025%-0.0001% for waste water weight for the amount of activated carbon)
4 meters of the bubbling tower height degree that above-mentioned ozone bubbling adopts, 80 millimeters of tower internal diameter, waste water static state holds 3 meters of liquid height.
The ozone that ozone used produces for oxygen source ozone generator, its ozone concentration reaches 50-80mg/l.
The ozone oxidation time is preferably 210 minutes -480 minutes, and most preferably oxidization time is 480 minutes.
In waste water raw water during COD concentration 8160mg/l, the oxygen source ozone generator the use of specification being 30 Grams Per Hours.
The activated carbon particle size using is 200-800 mesh, and preferable particle size is 500 mesh.The activated carbon adsorption time is 6 hours.
Auxiliary heating-up temperature is 25-100 DEG C, and preferable temperature is 60 DEG C -100 DEG C, and preferably temperature is 100 DEG C.
Useless Organic substance in water after activated carbon adsorption reaches below 40PPM, can enter back into concentration crystallizer, prepares pure
Spend higher solid crystal salt.
The ozone that ozone used by the present invention produces for oxygen source ozone generator, its ozone concentration reaches 50-80mg/l, once
Carry out oxidation experiment using the ozone that air source ozone generator produces, because its ozone content is relatively low, highest only has 20mg/l,
Its oxidation effectiveness is substantially not so good as oxygen source generator.
Organic substance in brine waste is more complicated, the large usage quantity of alone activated carbon, and substantial amounts of waste active carbon can cause secondary
Pollution, production cost is also higher.The present invention can preferably be processed saliferous and be given up using first ozone, the process route of rear activated carbon
Organic substance in water, the substantial amounts of consumption reducing activated carbon, reduces secondary pollution.
Beneficial effects of the present invention compared with the prior art：The inventive method can effectively remove the Organic substance in high slat-containing wastewater,
The clearance of COD may be up to 99.6%, obvious to water quality decolorizing effect, and can significantly reduce the consumption of activated carbon, reduces
Secondary pollution.
Specific embodiment
By the following examples the present invention is further described：
Embodiment 1
By raw wastewater after the oxidation of ozone bubbling, the amount according to the Organic substance of residual in waste water is using suitably excessive activated carbon
Absorption waste water in Organic substance, carry out during activated carbon adsorption auxiliary heating, make content of organics in waste water reach 30PPM with
Carry out concentration crystallization again after lower, prepare solid crystal salt.
Specific as follows：
Using 4 meters of bubbling tower height degree, 80 millimeters of tower internal diameter, waste water static state holds 3 meters of liquid height, and in waste water raw water, COD is dense
Degree 8160mg/l, is tested with the source of oxygen of 30 Grams Per Hours, air source ozone generator, result of the test such as table 1 respectively：
Table 1
As can be seen from the above table, the concentration of oxygen source ozone is high, compares air source ozone, and it is short to have an oxidation responding time, oxygen
The high advantage of change degree.
Waste water (COD content about 2000mg/l) after ozone oxidation, adopts active carbon absorption technology to remove wherein further
Organic substance.Test adopts 200-800 mesh activated carbon, tests respectively, press respectively under the conditions of 25 DEG C, 60 DEG C, 100 DEG C
Usage amount according to the 0.05% of waste water weight, 0.1%, 0.15%, 0.2% has carried out charcoal test, and test period is equal
For 6 hours, in waste water after adsorption filtration, residual COD (mg/l) was respectively shown in Table 2：
Table 2
As can be seen from the above table, add the 500-800 mesh activated carbon effect of 0.15%-0.2% preferably, add the 800 of 0.15%
Mesh activated carbon best results, 500 contents it.
May be up to 99.6% using the clearance of the inventive method COD, and obvious to water quality decolorizing effect.
In high slat-containing wastewater content of organics reach 30PPM about after further concentration knot is carried out using condensing crystallizing equipment
Crystalline substance, extracts highly purified anhydrous salt, can prepare solid crystal salt.
Claims (10)
1. a kind of ozone, activated carbon combination process high slat-containing wastewater in Organic substance method it is characterised in that the method include with
Lower step：After raw wastewater is aoxidized by ozone bubbling form, the amount according to the Organic substance of residual in waste water is using suitably
Organic substance in excessive activated carbon adsorption waste water, carries out auxiliary heating during activated carbon adsorption.
2. the method that ozone according to claim 1, activated carbon combination process the Organic substance in high slat-containing wastewater, its feature
It is that in waste water, COD content is in 2000mg/l, the consumption of activated carbon is the 0.05%-0.2% of waste water weight.
3. the method that ozone according to claim 2, activated carbon combination process the Organic substance in high slat-containing wastewater,
It is characterized in that 4 meters of the bubbling tower height degree that ozone bubbling adopts, 80 millimeters of tower internal diameter, waste water static state holds 3 meters of liquid height.
4. the method that ozone according to claim 1, activated carbon combination process the Organic substance in high slat-containing wastewater,
It is characterized in that the ozone that ozone used produces for oxygen source ozone generator, its ozone concentration reaches 50-80mg/l.
5. the method that ozone according to claim 5, activated carbon combination process the Organic substance in high slat-containing wastewater,
It is characterized in that in waste water raw water during COD concentration 8160mg/l, using the oxygen source ozone generator of 30 Grams Per Hours.
6. the method that ozone according to claim 1, activated carbon combination process the Organic substance in high slat-containing wastewater,
It is characterized in that the activated carbon particle size using is 200-800 mesh.
7. the method that ozone according to claim 1, activated carbon combination process the Organic substance in high slat-containing wastewater,
It is characterized in that auxiliary heating-up temperature is 25-100 DEG C.
8. the method that ozone according to claim 1, activated carbon combination process the Organic substance in high slat-containing wastewater, its feature
It is that the activated carbon adsorption time is 6 hours.
9. the method that ozone according to claim 1, activated carbon combination process the Organic substance in high slat-containing wastewater, its feature
It is that the ozone oxidation time is 210 minutes -480 minutes.
10. the method that ozone according to claim 1, activated carbon combination process the Organic substance in high slat-containing wastewater, its feature
It is that in waste water, content of organics carries out concentration crystallization after reaching below 40PPM again, prepare solid crystal salt.
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| CN201510548775.7A CN106477759A (en) | 2015-08-31 | 2015-08-31 | The method that ozone, activated carbon combination process the Organic substance in high slat-containing wastewater |
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| CN201510548775.7A CN106477759A (en) | 2015-08-31 | 2015-08-31 | The method that ozone, activated carbon combination process the Organic substance in high slat-containing wastewater |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108178364A (en) * | 2017-11-27 | 2018-06-19 | 上海化学工业区中法水务发展有限公司 | The method handled organic matter in high salinity industrial wastewater |
| CN109879481A (en) * | 2019-04-07 | 2019-06-14 | 苏州金渠环保科技有限公司 | Ozone and activated carbon adsorption sewerage advanced treatment process |
| CN113336243A (en) * | 2021-05-08 | 2021-09-03 | 江苏杰林环保科技有限公司 | Method for recovering chemical waste salt |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103342432A (en) * | 2013-07-23 | 2013-10-09 | 南京工业大学 | Near zero emission process of salt-containing waste water |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103342432A (en) * | 2013-07-23 | 2013-10-09 | 南京工业大学 | Near zero emission process of salt-containing waste water |
Non-Patent Citations (3)
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| 李培元，周柏青: "《发电厂水处理及水质控制》", 30 November 2011, 中国电力出版社 * |
| 王建兵等: "《煤化工高浓度有机废水处理技术及工程实例》", 31 July 2015, 冶金工业出版社 * |
| 金鹏康等: "臭氧氧化处理高盐量水中有机物过程中镁离子的损失", 《环境化学》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108178364A (en) * | 2017-11-27 | 2018-06-19 | 上海化学工业区中法水务发展有限公司 | The method handled organic matter in high salinity industrial wastewater |
| CN109879481A (en) * | 2019-04-07 | 2019-06-14 | 苏州金渠环保科技有限公司 | Ozone and activated carbon adsorption sewerage advanced treatment process |
| CN113336243A (en) * | 2021-05-08 | 2021-09-03 | 江苏杰林环保科技有限公司 | Method for recovering chemical waste salt |
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Address after: 214253 Wuxi, Jiangsu, Yixing new town, Xinfeng Road, No. 140 Applicant after: Jiangsu Geely Amperex Technology Limited Address before: 214253 Wuxi, Jiangsu, Yixing new town, Xinfeng Road, No. 140 Applicant before: Yixing Changjili Chemicals Co., Ltd. |
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Application publication date: 20170308 |
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