CN107162264A - The minimizing technology of calcium ion in useless denitrating catalyst regeneration treatment waste water - Google Patents
The minimizing technology of calcium ion in useless denitrating catalyst regeneration treatment waste water Download PDFInfo
- Publication number
- CN107162264A CN107162264A CN201710424129.9A CN201710424129A CN107162264A CN 107162264 A CN107162264 A CN 107162264A CN 201710424129 A CN201710424129 A CN 201710424129A CN 107162264 A CN107162264 A CN 107162264A
- Authority
- CN
- China
- Prior art keywords
- waste water
- calcium ion
- catalyst regeneration
- denitrating catalyst
- regeneration treatment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- 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
- C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Removal Of Specific Substances (AREA)
- Processing Of Solid Wastes (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
The invention discloses a kind of minimizing technology of calcium ion in useless denitrating catalyst regeneration treatment waste water, comprise the following steps：1）Waste water after useless denitrating catalyst regeneration treatment is squeezed into buffer memory device, the pH value of waste water is controlled 7~9；2）Calcium ion concentration in waste water is determined using titration principle；3）Powdered sodium carbonate is added in waste water, the mol ratio of carbanion and calcium ion is controlled 1.2:1, calcium ion in waste water is removed, the clearance of calcium ion is reached 100%.The present invention can remove the calcium ion in useless denitrating catalyst regeneration treatment waste water, and the clearance of calcium ion is reached 100%.
Description
Technical field
The present invention relates to the minimizing technology of calcium ion in useless denitrating catalyst regeneration treatment waste water.
Background technology
The waste liquid produced in useless denitrating catalyst regenerative process contains substantial amounts of calcium ion, while the liquid waste processing mistake after regeneration
It is also required to add milk of lime in journey as precipitating reagent, therefore contains substantial amounts of calcium in the waste water after useless denitrating catalyst regeneration treatment
Salt.Because solubility of the calcium salt in water is relatively low and its solubility is influenced by temperature smaller, cause calcium ion can be at waste water
Crystallized during reuse after reason, cause the damage of operational outfit and RO films, this processing for seriously constraining waste water system is returned
With ability, influence of the calcium salt crystallization to equipment is reduced, it is necessary to which the calcium ion in waste water is removed to improve production efficiency.
The content of the invention
It is an object of the invention to provide a kind of minimizing technology of calcium ion in useless denitrating catalyst regeneration treatment waste water, its
Calcium ion in waste water can be removed, the clearance of calcium ion is reached 100%.
To achieve the above object, the technical scheme is that designing calcium in a kind of useless denitrating catalyst regeneration treatment waste water
The minimizing technology of ion, comprises the following steps：
1）Waste water after useless denitrating catalyst regeneration treatment is squeezed into buffer memory device, the pH value of waste water is controlled 7~9；
2）Calcium ion concentration in waste water is determined using titration principle；
3）Powdered sodium carbonate is added in waste water, the mol ratio of carbanion and calcium ion is controlled 1.2:1, by waste water
Calcium ion is removed, and the clearance of calcium ion is reached 100%.
The reaction mainly occurred after powdered sodium carbonate is added in the waste water to be included：Ca2++CO3 2-=CaCO3。
The advantages of the present invention are：A kind of removal of calcium ion in useless denitrating catalyst regeneration treatment waste water is provided
Method, it can remove calcium ion in waste water, the clearance of calcium ion is reached 100%.
The present invention combines to form stable deposit using calcium ion and carbonate, and the aqueous solution for adding carbonate is quiet
Precipitation is put, then by filter plant by the supernatant liquid filtering after standing, so as to eliminate the calcium ion in processing rear solution, is protected
The follow-up process equipment of card will not be damaged because of the crystallization of calcium salt.
Embodiment
With reference to embodiment, the embodiment to the present invention is further described.Following examples are only used for more
Plus technical scheme is clearly demonstrated, and can not be limited the scope of the invention with this.
The technical scheme that the present invention is embodied is：
The minimizing technology of calcium ion, comprises the following steps in a kind of useless denitrating catalyst regeneration treatment waste water：
1）Waste water after useless denitrating catalyst regeneration treatment is squeezed into buffer memory device, the pH value of waste water is controlled 7~9；
2）Calcium ion concentration in waste water is determined using titration principle；
3）Powdered sodium carbonate is added in waste water, the mol ratio of carbanion and calcium ion is controlled 1.2:1, by waste water
Calcium ion is removed, and the clearance of calcium ion is reached 100%.
The reaction mainly occurred after powdered sodium carbonate is added in the waste water to be included：Ca2++CO3 2-=CaCO3。
The present invention combines to form stable deposit using calcium ion and carbonate, and the aqueous solution for adding carbonate is quiet
Precipitation is put, then by filter plant by the supernatant liquid filtering after standing, so as to eliminate the calcium ion in processing rear solution, is protected
The follow-up process equipment of card will not be damaged because of the crystallization of calcium salt.
The present invention can remove the calcium ion in useless denitrating catalyst regeneration treatment waste water, and reach the clearance of calcium ion
To 100%.
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, some improvements and modifications can also be made, these improvements and modifications
Also it should be regarded as protection scope of the present invention.
Claims (2)
1. the minimizing technology of calcium ion in useless denitrating catalyst regeneration treatment waste water, it is characterised in that comprise the following steps：
1）Waste water after useless denitrating catalyst regeneration treatment is squeezed into buffer memory device, the pH value of waste water is controlled 7~9；
2）Calcium ion concentration in waste water is determined using titration principle；
3）Powdered sodium carbonate is added in waste water, the mol ratio of carbanion and calcium ion is controlled 1.2:1, by waste water
Calcium ion is removed, and the clearance of calcium ion is reached 100%.
2. the minimizing technology of calcium ion, the waste water in useless denitrating catalyst regeneration treatment waste water according to claim 1
The reaction mainly occurred after middle addition powdered sodium carbonate includes：Ca2++CO3 2-=CaCO3。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710424129.9A CN107162264A (en) | 2017-06-07 | 2017-06-07 | The minimizing technology of calcium ion in useless denitrating catalyst regeneration treatment waste water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710424129.9A CN107162264A (en) | 2017-06-07 | 2017-06-07 | The minimizing technology of calcium ion in useless denitrating catalyst regeneration treatment waste water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107162264A true CN107162264A (en) | 2017-09-15 |
Family
ID=59825373
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710424129.9A Pending CN107162264A (en) | 2017-06-07 | 2017-06-07 | The minimizing technology of calcium ion in useless denitrating catalyst regeneration treatment waste water |
Country Status (1)
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| CN (1) | CN107162264A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108168988A (en) * | 2017-11-15 | 2018-06-15 | 浙江海拓环境技术有限公司 | The assay method of ammonia nitrogen in a kind of high calcium waste water |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013231217A (en) * | 2012-04-27 | 2013-11-14 | Mitsubishi Heavy Ind Ltd | Method of separating and recovering metal element |
| CN203999220U (en) * | 2014-08-19 | 2014-12-10 | 李灏呈 | SCR denitrating catalyst cleaning and regeneration Waste Water Treatment |
| CN104591460A (en) * | 2015-01-07 | 2015-05-06 | 华电电力科学研究院 | Treatment device and treatment technology for denitration catalyst cleaning regeneration wastewater and waste residue |
| CN205821058U (en) * | 2016-07-14 | 2016-12-21 | 江苏龙净科杰催化剂再生有限公司 | The processing system of SCR denitration regeneration washing waste water |
| CN106756054A (en) * | 2017-02-10 | 2017-05-31 | 北京恺岚方科技发展有限公司 | It is a kind of that titanium, tungsten, the method for vanadium are separated and recovered from discarded SCR denitration |
-
2017
- 2017-06-07 CN CN201710424129.9A patent/CN107162264A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013231217A (en) * | 2012-04-27 | 2013-11-14 | Mitsubishi Heavy Ind Ltd | Method of separating and recovering metal element |
| CN203999220U (en) * | 2014-08-19 | 2014-12-10 | 李灏呈 | SCR denitrating catalyst cleaning and regeneration Waste Water Treatment |
| CN104591460A (en) * | 2015-01-07 | 2015-05-06 | 华电电力科学研究院 | Treatment device and treatment technology for denitration catalyst cleaning regeneration wastewater and waste residue |
| CN205821058U (en) * | 2016-07-14 | 2016-12-21 | 江苏龙净科杰催化剂再生有限公司 | The processing system of SCR denitration regeneration washing waste water |
| CN106756054A (en) * | 2017-02-10 | 2017-05-31 | 北京恺岚方科技发展有限公司 | It is a kind of that titanium, tungsten, the method for vanadium are separated and recovered from discarded SCR denitration |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108168988A (en) * | 2017-11-15 | 2018-06-15 | 浙江海拓环境技术有限公司 | The assay method of ammonia nitrogen in a kind of high calcium waste water |
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| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 224000 Jiangsu Yancheng City Ting Hu District Environmental Protection Science and technology city Fengxiang Road No. 198 Applicant after: Jiangsu Long Jing kjie Environmental Protection Technology Co., Ltd. Address before: 224000 Jiangsu Yancheng City Ting Hu District Environmental Protection Science and technology city Fengxiang Road No. 198 Applicant before: JIANGSU LONGKING COALOGIX CATALYST REGENERATION CO., LTD. |
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170915 |