CN106145289A - A kind of novel composite flocculating agent to fluoride wastewater treatment and preparation method thereof - Google Patents
A kind of novel composite flocculating agent to fluoride wastewater treatment and preparation method thereof Download PDFInfo
- Publication number
- CN106145289A CN106145289A CN201610680680.5A CN201610680680A CN106145289A CN 106145289 A CN106145289 A CN 106145289A CN 201610680680 A CN201610680680 A CN 201610680680A CN 106145289 A CN106145289 A CN 106145289A
- Authority
- CN
- China
- Prior art keywords
- flocculating agent
- novel composite
- wastewater treatment
- composite flocculating
- fluoride wastewater
- 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.)
- Pending
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Classifications
-
- 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
-
- 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
- C02F2101/12—Halogens or halogen-containing compounds
- C02F2101/14—Fluorine or fluorine-containing compounds
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- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (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)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Removal Of Specific Substances (AREA)
Abstract
A kind of novel composite flocculating agent to fluoride wastewater treatment of offer is provided, meet following condition: the mass content of aluminium oxide is 10%, basicity 8.6, corrosion inhibiter 0.5～33%, when above-mentioned novel composite flocculating agent makes the aqueous solution that mass concentration is 1% of aluminium polychlorid, its pH value is 3～4.When this kind of novel composite flocculating agent to fluoride wastewater treatment uses, producing flco speed fast in flocculation process, sedimentation velocity is fast, and corrosivity is little.
Description
Technical field
The invention belongs to water-treatment technology field, be specifically related to a kind of novel composite flocculating agent to fluoride wastewater treatment and
Its preparation method.
Background technology
During fluoride wastewater treatment, having a kind of technique is to add a certain amount of calcium ion in fluorine waste water, with calcium from
Son combines fluorion, forms the calcium fluoride precipitate of indissoluble type, the most again with certain concentration, the polymerization chlorine of specific basicity in water
Changing aluminum (PAC) solution and accelerate the precipitation of calcium fluoride, cooperation processes the fluorion in water.But adjusting certain concentration, alkali
During aluminium polychlorid (PAC) solution spent, it is necessary to use certain acid and be modulated, aluminium polychlorid (PAC) aqueous solution itself
For acidity, then adjust concentration with substantial amounts of acid and basicity will make system acidity very big, to canister and conveying pipe
Road can produce the biggest corrosion.
Summary of the invention
The technical problem to be solved is for above-mentioned the deficiencies in the prior art, it is provided that in a kind of flocculation process
Producing flco speed fast, sedimentation velocity is fast, the novel composite flocculating agent to fluoride wastewater treatment that corrosivity is little and preparation side thereof
Method.
For solving above-mentioned technical problem, the technical solution used in the present invention is, a kind of novel multiple to fluoride wastewater treatment
Closing flocculant, meet following condition: the mass content of aluminium oxide is 10%, basicity 8.6, corrosion inhibiter 0.5～33%, when above-mentioned
When novel composite flocculating agent makes the aqueous solution that mass concentration is 1% of aluminium polychlorid, its pH value is 3～4.
Further, the raw material including following mass content is prepared from: aluminium polychlorid 35%, corrosion inhibiter 0.5～
33% and hydrochloric acid 27.2%, surplus is water, and total amount is 100%；The mass concentration of described hydrochloric acid is 31%.
Further, one or two during this corrosion inhibiter is molybdate, tungstates, silicate, thiourea, hexamethylenetetramine
Kind.
The invention discloses the preparation method of above-mentioned a kind of novel composite flocculating agent to fluoride wastewater treatment, the method
As follows: to weigh above-mentioned each raw material, aluminium polychlorid, corrosion inhibiter and hydrochloric acid are added to the water mixing, stir at a temperature of 50～80 DEG C
Mix 30～50min, be down to room temperature and get final product.
A kind of novel composite flocculating agent to fluoride wastewater treatment of the present invention and preparation method thereof has the advantage that coagulation
Performance is good, flco is big, consumption is few, efficiency is high, precipitate the advantages such as fast, applied widely, and this novel composite flocculating agent is with traditional
Flocculant is compared, and has been newly added the inhibition composition of protection metal, thus has reduced the corruption to hardware and other metal parts
Erosion, improves the service life of metal part.The life-span of metal parts 1/3～1/2 can be extended compared with traditional flocculant, can
Save maintenance cost more than 40%.
Detailed description of the invention
A kind of novel composite flocculating agent to fluoride wastewater treatment of the present invention, the material content in each embodiment is respectively such as table
Shown in 1, weigh each raw material as described in Table 1, aluminium polychlorid, corrosion inhibiter and hydrochloric acid are added to the water mixing, at 50～80 DEG C
In temperature range, stirring 30～50min, is down to room temperature and get final product.Each embodiment is as shown in table 1:
The control experiment of the finished product prepared by different corrosion inhibiter selected by table 1
" static uniformly corrosion inhibition rate and spot corrosion are delayed according in petroleum industry standard SY/T5273-2014 4.7 in experiment in table 1
Erosion rate measure " regulation test.
In above-mentioned experiment, after corrosive liquid used is for coordinating with calcium ion processed fluorion with aluminium polychlorid (PAC)
Sewage.Lacing film used is the A of the regulation meeting SY/T53293Steel standard lacing film.Judge according to economic benefit, experimental result, when
When hexamethylenetetramine consumption accounts for aluminium polychlorid (PAC) content 10%, i.e. can reach to protect the effect of hardware, continue
Continuous increase, corrosion inhibition rate can improve, but cost performance is substantially reduced.Therefore the consumption of 10% is most economical rational consumption.
Use the novel composite flocculating agent to fluoride wastewater treatment in the present invention to process fluoride waste, process fluorion
After water the corrosion of metal such as carbon steel, rustless steel is greatly reduced, metal surface is had anti-corrosion protection effect.To A3 steel 35
DEG C time corrosion inhibition rate >=80%.
Claims (4)
1. the novel composite flocculating agent to fluoride wastewater treatment, it is characterised in that meet following condition: the quality of aluminium oxide
Content is 10%, basicity 8.6, corrosion inhibiter 0.5～33%, when above-mentioned novel composite flocculating agent makes the quality of aluminium polychlorid
When concentration is the aqueous solution of 1%, its pH value is 3～4.
2. require a kind of novel composite flocculating agent to fluoride wastewater treatment described in 1 according to claim, it is characterised in that bag
The raw material including following mass content is prepared from: aluminium polychlorid 35%, corrosion inhibiter 0.5～33% and hydrochloric acid 27.2%, surplus
For water, total amount is 100%；The mass concentration of described hydrochloric acid is 31%.
3. require a kind of novel composite flocculating agent to fluoride wastewater treatment described in 2 according to claim, it is characterised in that institute
State corrosion inhibiter be in molybdate, tungstates, silicate, thiourea, hexamethylenetetramine one or both.
4. the preparation method of a kind of novel composite flocculating agent to fluoride wastewater treatment as described in claim 1,2 or 3, it is special
Levying and be, the method is as follows: weigh above-mentioned each raw material, aluminium polychlorid, corrosion inhibiter and hydrochloric acid are added to the water mixing, 50～
Stir 30～50min at a temperature of 80 DEG C, be down to room temperature and get final product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610680680.5A CN106145289A (en) | 2016-08-17 | 2016-08-17 | A kind of novel composite flocculating agent to fluoride wastewater treatment and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610680680.5A CN106145289A (en) | 2016-08-17 | 2016-08-17 | A kind of novel composite flocculating agent to fluoride wastewater treatment and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106145289A true CN106145289A (en) | 2016-11-23 |
Family
ID=57331393
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610680680.5A Pending CN106145289A (en) | 2016-08-17 | 2016-08-17 | A kind of novel composite flocculating agent to fluoride wastewater treatment and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106145289A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10286577A (en) * | 1997-04-14 | 1998-10-27 | Japan Organo Co Ltd | Apparatus for treating fluorine-containing wastewater and abrasion wastewater and method therefor |
| CN1445173A (en) * | 2002-03-16 | 2003-10-01 | 张春海 | Method for removing fluoride in water |
| CN103373775A (en) * | 2012-04-17 | 2013-10-30 | 上海晶宇环境工程有限公司 | Membrane method treatment process of circulation cooling water raw water and special system for membrane method treatment process |
-
2016
- 2016-08-17 CN CN201610680680.5A patent/CN106145289A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10286577A (en) * | 1997-04-14 | 1998-10-27 | Japan Organo Co Ltd | Apparatus for treating fluorine-containing wastewater and abrasion wastewater and method therefor |
| CN1445173A (en) * | 2002-03-16 | 2003-10-01 | 张春海 | Method for removing fluoride in water |
| CN103373775A (en) * | 2012-04-17 | 2013-10-30 | 上海晶宇环境工程有限公司 | Membrane method treatment process of circulation cooling water raw water and special system for membrane method treatment process |
Non-Patent Citations (3)
| Title |
|---|
| 兰文艺等: "《实用环境工程手册 水处理材料与药剂》", 31 January 2002, 化学工业出版社 * |
| 陈旭俊: "《工业清洗剂及清洗技术》", 31 March 2002, 化学工业出版社 * |
| 高英: "复合混凝法处理高炉煤气冷凝水及设备腐蚀影响的研究", 《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑》 * |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20161123 |