CN1085190A - The production method of solution of ferrous chloride and application - Google Patents
The production method of solution of ferrous chloride and application Download PDFInfo
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- CN1085190A CN1085190A CN 93112175 CN93112175A CN1085190A CN 1085190 A CN1085190 A CN 1085190A CN 93112175 CN93112175 CN 93112175 CN 93112175 A CN93112175 A CN 93112175A CN 1085190 A CN1085190 A CN 1085190A
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- ferrous chloride
- sewage
- hydrochloric acid
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Abstract
A kind of production method of solution of ferrous chloride, processing step is: (one) dilute hydrochloric acid and capacity iron nitre, react under agitation condition; (2) precipitate after the reaction; (3) extraction clear liquid, can promptly get the iron protochloride finished product.Technology is simple, and production cost is low.The solution of ferrous chloride that produces as the water purification agent of sewage, easy to use, the soil removal efficiency height, coagulating is rapid, the precipitating sludge dewatering is good, also is very suitable for using the purifying treatment of hydrophilic dye dyeing and printing sewage.
Description
The invention belongs to a kind of metal compound solution, particularly a kind of production method of iron salt solutions and as the application of water purification agent.
At present, as water purification agent, particularly the water purification agent of weaving, dyeing and printing sewage mainly is that polymerize aluminum chloride and iron(ic) chloride activated carbon etc. are arranged.This water purification agent of two types, can be to sewage realization purification to a certain degree, though to handling the early stage of dyeing and printing sewage and using the dyeing and printing sewage treatment effect of hydrophobic dye better, but, treating water still has certain colourity, especially to using the dyeing and printing sewage of hydrophilic dye, then treatment effect extreme difference, even increase the medicine input amount, effect is also still very undesirable; And, such water purification agent, cost is higher, has stronger corrodibility, and it is convenient inadequately to use.
Task of the present invention provides a kind of production method of solution of ferrous chloride, produce solution of ferrous chloride, and as water purification agent, make it the turbid rate height that goes to sewage, treatment effect is good, cost is low, particularly can solve the decolouring problem of hydrophilic dye dyeing and printing sewage effectively, to overcome the existing above-mentioned deficiency of prior art water purification agent.
Task of the present invention realizes with following technical scheme:
One, the production method of solution of ferrous chloride, the step of its technology is:
(1) hydrochloric acid and capacity iron filings are dropped into aerobic fermentation tank, the time and stir and react, reaction equation is:
(2) treat that hydrochloric acid and iron filings fully react after, quiescent setting;
(3) extract clear liquid, can, promptly get the solution of ferrous chloride finished product.
Said hydrochloric acid can be dilute hydrochloric acid in the inventive method, and its concentration is comparatively suitable with 4-20%, is preferably 8-12%, can be with common hydrochloric acid thin up.
Quiescent setting in the said processing step (two), the time generally should not be less than 6 hours, preferably grasps at 8-12 hour, and reaction solution is fully precipitated, and increases clarity, improves the quality of products; For reaching this purpose, can also after fully reacting, once filter earlier, filtrate is sent into the settling tank of establishing in addition, carry out quiescent setting again, and filter residue is returned aerobic fermentation tank, make the row utilization again of excessive iron filings.
In processing step (two), for understanding and grasping the situation of reaction solution, prevent that iron filings from adding quantity not sufficient, after the reaction, can also the potential of hydrogen and the proportion of reaction solution be detected, carry out intermediate controlled.
Two, the application of solution of ferrous chloride is the water purification agent as sewage, and especially for the water purification agent of dyeing and printing sewage, using method is:
At first detect the pH value of sewage, when pH value is lower than 9.5, adds liming and regulate, make the PH of sewage be not less than 9.5; Under discharge condition, solution of ferrous chloride is dropped in the sewage then by ton sewage 100-150 gram, thus the purpose of realization sewage purification.
The inventive method, processing step are simple, and production cost is low.The solution of ferrous chloride of being produced is as water purification agent, and is easy to use, and sewage is removed turbid rate height, and coagulating is rapid, and the reaction precipitation thing is tight, and the precipitating sludge dewatering is good.After testing, sewage by suspended thing clearance 95%, chroma removal rate 98%, COD clearance 60-70%, removal of heavy metal ions 60-70%, BOD and CN
-Clearance is more than 60%.
Claims (7)
1, a kind of production method of solution of ferrous chloride is characterized in that processing step is: (one) drops into aerobic fermentation tank with dilute hydrochloric acid and capacity iron filings, the time and stir, react, reaction formula is:
(2) treat that hydrochloric acid and iron filings fully react after, quiescent setting;
(3) extract clear liquid, can, promptly get the solution of ferrous chloride finished product.
2, method according to claim 1 is characterized in that said dilute hydrochloric acid, and its concentration is 4-20%.
3, method according to claim 2 is characterized in that said concentration is 8-12%.
4, method according to claim 1 is characterized in that the quiescent setting in the said step (two), at least 6 hours its time.
5, method according to claim 4 is characterized in that at least 6 hours said time, is 8-12 hour.
6, method according to claim 1 is characterized in that abundant reaction and quiescent setting in the said step (two), once filters therebetween.
7, a kind of application of solution of ferrous chloride is characterized in that it being the water purification agent that is used as sewage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93112175 CN1085190A (en) | 1993-09-22 | 1993-09-22 | The production method of solution of ferrous chloride and application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93112175 CN1085190A (en) | 1993-09-22 | 1993-09-22 | The production method of solution of ferrous chloride and application |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1085190A true CN1085190A (en) | 1994-04-13 |
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ID=4989903
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93112175 Pending CN1085190A (en) | 1993-09-22 | 1993-09-22 | The production method of solution of ferrous chloride and application |
Country Status (1)
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| CN (1) | CN1085190A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107585792A (en) * | 2017-09-28 | 2018-01-16 | 唐山市斯瑞尔化工有限公司 | The preparation method and Ferrous dichloride dihydrate solid of Ferrous dichloride dihydrate solid |
| WO2021072635A1 (en) * | 2019-10-15 | 2021-04-22 | 诸暨易联众创企业管理服务有限公司 | Method for preparing rod-shaped ferrous chloride nano-material |
| RU2759099C1 (en) * | 2021-03-26 | 2021-11-09 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Российский химико-технологический университет имени Д.И. Менделеева (РХТУ им. Д.И. Менделеева) | Method for preparing iron-containing coagulant for water purification |
-
1993
- 1993-09-22 CN CN 93112175 patent/CN1085190A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107585792A (en) * | 2017-09-28 | 2018-01-16 | 唐山市斯瑞尔化工有限公司 | The preparation method and Ferrous dichloride dihydrate solid of Ferrous dichloride dihydrate solid |
| CN107585792B (en) * | 2017-09-28 | 2021-07-27 | 唐山市斯瑞尔化工有限公司 | Preparation method of ferrous chloride dihydrate solid and ferrous chloride dihydrate solid |
| WO2021072635A1 (en) * | 2019-10-15 | 2021-04-22 | 诸暨易联众创企业管理服务有限公司 | Method for preparing rod-shaped ferrous chloride nano-material |
| RU2759099C1 (en) * | 2021-03-26 | 2021-11-09 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Российский химико-технологический университет имени Д.И. Менделеева (РХТУ им. Д.И. Менделеева) | Method for preparing iron-containing coagulant for water purification |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |