CN107352681A - A kind of silicon removing method of high ammonium high salt high silicon catalyst waste water - Google Patents
A kind of silicon removing method of high ammonium high salt high silicon catalyst waste water Download PDFInfo
- Publication number
- CN107352681A CN107352681A CN201710612424.7A CN201710612424A CN107352681A CN 107352681 A CN107352681 A CN 107352681A CN 201710612424 A CN201710612424 A CN 201710612424A CN 107352681 A CN107352681 A CN 107352681A
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- Prior art keywords
- silicon
- waste water
- salt
- ammonium
- added
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Removal Of Specific Substances (AREA)
Abstract
The present invention relates to a kind of silicon removing method of high ammonium high salt high silicon catalyst waste water, optimum condition is adjusted to remove silicon polluter in high ammonium high-silicon high salt catalyst wastewater by using flocculant, magnesia mixture, soda ash, alkali, flocculation aid is added, it is higher to silicon removal efficiency, while also have preferable removal effect to hardness present in waste water, suspension etc..
Description
Technical field
The invention belongs to field of waste water treatment, and in particular to a kind of silicon removing method of high ammonium high salt high silicon catalyst waste water,
Realize the removal of the silicon polluter of the comprehensive wastewater with the high silicon characteristic of high ammonium high salt discharged in catalyst production process.
Background technology
Catalyst has in industries such as PETROLEUM PROCESSING, chemical fertilizer industry, chemicals synthesis, high polymer material preparation, environmental protection
Have important and be widely applied.But in oil refining catalyst production process, it will usually the substantial amounts of production waste water of discharge, it is such useless
Contain substantial amounts of silicon polluter in water, usual content reaches milligrams per liters up to a hundred, and also has in waste water hundreds of even thousands of
Ammonium of high concentration etc., certain difficulty is brought for the processing of waste water.
At present, for such waste water, generally use adds the technique removal silicon of simple precipitation after alkali and flocculant, however,
This method is bad to the removal effect of silicon, simultaneously because in containing wastewater from catalyst high content ammonium influence, often result in pH value of waste water
It is unstable, the final removal effect for causing silicon is less than 60%.Thus, the removal for high content silicon in such waste water must be sought
Preferable handling process is sought, to prevent the pollution of the devices such as subsequent film processing and evaporation.
The content of the invention
It is an object of the invention to solve prior art problem, there is provided a kind of high ammonium high salt high silicon catalyst waste water removes silicon
Method.
Present invention employs following scheme：A kind of silicon removing method of high ammonium high salt high silicon catalyst waste water, including following place
Manage step：
（1）1-3ppm soluble ferric iron salt will be added in the high high silicon waste water of ammonium high salt of Catalyst Production discharge, be stirred, gather
Close reaction 3-5min；
（2）Soluble magnesium salt is added according to Mg/Si=2.5-5.5 mol ratio, is stirred, reaction time 5-10min；
（3）According to CO3 2-/Ca2+=1.1-1.5 mol ratio adds sodium carbonate, while adds alkali regulation pH, is stirred, final pH
It is adjusted to 10.5-11；
（4）0.3-1mg/L PAM is added, stirs, reaction time 5-10min, staticly settles, carries out mud-water separation.
Preferably, step（1）In the soluble trivalent iron salt added be preferably poly ferric chloride flocculant agent.
Preferably, step（2）Described in soluble magnesium salt be preferably MgCl2。
Preferably, step（3）Middle selection NaOH regulation pH value of waste water is 10.5-11.
Preferably, step（4）The middle reaction time is preferably 8min.
Compared with prior art, silicon removing method of the invention has the advantages that：
（1）By using addition flocculant（PFC）, magnesia mixture（MgCl2）, soda ash, alkali, flocculation aid（PAM）Optimum condition is adjusted to come
Silicon polluter in efficient high ammonium high-silicon high salt catalyst wastewater is removed, overcomes such waste water during except silicon by ammonium shadow
Ring the shortcomings that larger so that silicon clearance is higher.
（2）It is preferred that adjusting pH value from sodium hydroxide, ensure that the operation of the follow-up high salt water treatment technology of such waste water is steady
It is qualitative.
（3）Except silicon simultaneously, method of the invention also have to hardness present in waste water, suspension etc. preferably remove effect
Fruit.
Embodiment
With reference to embodiment, the present invention will be further described：
Embodiment 1
1st, the raw water that the containing wastewater from catalyst discharged using certain Catalyst Production company is demonstrate,proved as the present embodiment, specific water quality data are shown in
Table 1.
The influent quality of table 1
2nd, raw water, which enters, removes system on silicon, and flocculant is separately added into according to corresponding concentration and reaction time in invention（PFC）, magnesia mixture
（MgCl2）, soda ash, alkali, flocculation aid（PAM）After medicament, pH value is adjusted to 10.8-11, the production after efficiently softening removes system on silicon
Water water quality is as shown in table 2, and the removal effect through repeated detection silica is shown in Table 3.
Efficiently softening removes system on silicon effluent quality to table 2
The silica removal effect of table 3
It can be seen that the silicon removing method by the present invention is taken out to silicon polluter in high ammonium high-silicon high salt catalyst wastewater, gram
Such waste water has been taken had a great influence during except silicon by ammonium the shortcomings that so that silicon clearance increases substantially, reach 70% with
On, even as high as 88%, far above the handling process of prior art（60% or so）.Meanwhile the calcium-magnesium content of effluent quality and
Total alkalinity is also very low, it is seen that except silicon, simultaneously, method of the invention also has preferably to hardness present in waste water, suspension etc.
Removal effect.
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited thereto, any
The change or replacement expected without creative work, it should all be included within the scope of the present invention.Therefore, it is of the invention
Protection domain should be determined by the scope of protection defined in the claims.
Claims (5)
1. a kind of silicon removing method of high ammonium high salt high silicon catalyst waste water, it is characterised in that including following processing step：
（1）1-3ppm soluble ferric iron salt will be added in the high high silicon waste water of ammonium high salt of Catalyst Production discharge, be stirred, gather
Close reaction 3-5min；
（2）Soluble magnesium salt is added according to Mg/Si=2.5-5.5 mol ratio, is stirred, reaction time 5-10min；
（3）According to CO3 2-/Ca2+=1.1-1.5 mol ratio adds sodium carbonate, while adds alkali regulation pH, is stirred, final pH
It is adjusted to 10.5-11；
（4）0.3-1mg/L PAM is added, stirs, reaction time 5-10min, staticly settles, carries out mud-water separation.
2. handling process according to claim 1, it is characterised in that step（1）In the soluble ferric iron salt added it is preferred
For poly ferric chloride flocculant agent.
3. handling process according to claim 1, it is characterised in that step（2）Described in soluble magnesium salt be preferably
MgCl2。
4. handling process according to claim 1, it is characterised in that step（3）It is middle to be from NaOH regulation pH value of waste water
10.5-11。
5. handling process according to claim 1, it is characterised in that step（4）The middle reaction time is preferably 8min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710612424.7A CN107352681A (en) | 2017-07-25 | 2017-07-25 | A kind of silicon removing method of high ammonium high salt high silicon catalyst waste water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710612424.7A CN107352681A (en) | 2017-07-25 | 2017-07-25 | A kind of silicon removing method of high ammonium high salt high silicon catalyst waste water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107352681A true CN107352681A (en) | 2017-11-17 |
Family
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710612424.7A Pending CN107352681A (en) | 2017-07-25 | 2017-07-25 | A kind of silicon removing method of high ammonium high salt high silicon catalyst waste water |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114573141A (en) * | 2022-03-11 | 2022-06-03 | 佛山市佳利达环保科技股份有限公司 | Method for removing silicon dioxide from high-salt printing and dyeing wastewater |
Citations (5)
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|---|---|---|---|---|
| CN104176870A (en) * | 2014-08-25 | 2014-12-03 | 西安热工研究院有限公司 | Viscous oil wastewater pretreatment and evaporation desalting system and method |
| CN104556475A (en) * | 2014-12-23 | 2015-04-29 | 北京赛诺水务科技有限公司 | Pretreatment technology of high-salinity wastewater |
| CN105417826A (en) * | 2015-12-30 | 2016-03-23 | 北京清大国华环境股份有限公司 | Catalyst waste water zero discharge method and device |
| CN105541017A (en) * | 2015-12-30 | 2016-05-04 | 北京清大国华环境股份有限公司 | Method and device for realizing zero emission of strong brine |
| CN105800820A (en) * | 2014-12-31 | 2016-07-27 | 北京清大国华环境股份有限公司 | Treatment method and device for silicon containing wastewater |
-
2017
- 2017-07-25 CN CN201710612424.7A patent/CN107352681A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104176870A (en) * | 2014-08-25 | 2014-12-03 | 西安热工研究院有限公司 | Viscous oil wastewater pretreatment and evaporation desalting system and method |
| CN104556475A (en) * | 2014-12-23 | 2015-04-29 | 北京赛诺水务科技有限公司 | Pretreatment technology of high-salinity wastewater |
| CN105800820A (en) * | 2014-12-31 | 2016-07-27 | 北京清大国华环境股份有限公司 | Treatment method and device for silicon containing wastewater |
| CN105417826A (en) * | 2015-12-30 | 2016-03-23 | 北京清大国华环境股份有限公司 | Catalyst waste water zero discharge method and device |
| CN105541017A (en) * | 2015-12-30 | 2016-05-04 | 北京清大国华环境股份有限公司 | Method and device for realizing zero emission of strong brine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114573141A (en) * | 2022-03-11 | 2022-06-03 | 佛山市佳利达环保科技股份有限公司 | Method for removing silicon dioxide from high-salt printing and dyeing wastewater |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171117 |
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| RJ01 | Rejection of invention patent application after publication |