CN105271493A - Production method for ferric oxide water purifying agent - Google Patents
Production method for ferric oxide water purifying agent Download PDFInfo
- Publication number
- CN105271493A CN105271493A CN201410343274.0A CN201410343274A CN105271493A CN 105271493 A CN105271493 A CN 105271493A CN 201410343274 A CN201410343274 A CN 201410343274A CN 105271493 A CN105271493 A CN 105271493A
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- CN
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- purifying agent
- water purifying
- production method
- ferric oxide
- water
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- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention relates to a production method for a water purifying agent. The production method includes the steps: adding iron filings and sulfuric acid into a circuit board waste liquid, to obtain ferric oxide; adding silica sand into sodium hydroxide, and calcining in a reflection furnace, to obtain sodium silicate; and mixing ferric oxide with sodium silicate according to a certain proportion, and thus obtaining the water purifying agent. The water purifying agent has relatively good treatment effect on printing and dyeing wastewater and electroplating wastewater, the transparency of the wastewater after treatment and chromium contained in water reach emission standards, and the water purifying agent has the characteristics of convenient use, simple production and low cost.
Description
Technical field: the production method that the present invention relates to a kind of water purification agent, is especially applicable to the water purification agent of dyeing waste water, electroplating wastewater.
Background technology: existing water purification agent is based on poly-aluminium, ferrous sulfate, the former is not because have reductibility, therefore waste water can not be decoloured, and the latter can only process electroplating wastewater, can not treatment of dyeing and printing, and the rate of fading only has 50%.
Summary of the invention: object of the present invention solves the deficiencies in the prior art exactly, and the water purification agent providing a kind for the treatment of of dyeing and printing, electroplating wastewater effective.
Production method of the present invention is as follows:
1. add in wiring board waste liquid with iron filings, sulfuric acid, heat to 60 ~ 70 DEG C, after 24 hours, namely separate out copper, with separating centrifuge, copper powder and ferrous sulfate separated, in the solution be ferrous sulfate, when temperature is cooled to room temperature, namely separate out Indian red (FeSO
4-7H
2o).
Reaction formula: Fe+CuCl
2+ H
2sO
4=Cul+FeSO
4+ 2HCl
2. silica sand is mixed with sodium hydroxide in proportion, put cast iron pan inherence reflection kiln roasting into, in order to avoid run off, temperature thermocouple wire controls, and connects automatic moisture meter, and when temperature reaches 650 ~ 700 DEG C, constant temperature 30 minutes, i.e. solubilized, generates water glass.
3. Indian red and water glass are mixed evenly by 3:1, obtain water purification agent.
The present invention has good regulation effect to dyeing waste water, electroplating wastewater, and after process, the transparency of waste water, reaches emission standard containing chromium in water, have easy to use, simple for production, feature with low cost.
Case study on implementation:
Get wiring board corrosive fluid 10 liters (copper content about 10%) and add vitriol oil 1.54kg, iron filings 0.88kg, heat to 68 DEG C, react completely after 24 hours, separate out copper powder 1.0kg, after being separated copper powder, solution being cooled to 25 DEG C, Indian red 4.28kg can be obtained.Take silica sand (content 95%) 1.0kg, add excessive ferrous sulfate 1.67kg, mixed, put in people's cast iron pan, at reflection kiln roasting, when heating to 680 DEG C, constant temperature 30 minutes, water glass 2.54kg.Get Indian red 4.28kg, add 1.43kg water glass, mix, obtain 5.7lkg water purification agent.
When treatment of dyeing and printing, when PH is 9 ~ 10, add the water purification agent of 2 ‰, be 300 ~ 400 to colourity, extension rate method waste water clearance is greater than 90%, is greater than 90% to the waste water clearance that COD is 300 ~ 400mg/L, is greater than 90% to the waste water clearance that turbidity is 200.
When processing electroplating wastewater, add the water purification agent of 2 grams in often liter of waste water, the pH value of waste water is adjusted to 8 ~ 9, water quality just can reach standard, and transparency reaches more than 90%, reaches emission standard in water containing chromium ion.
Claims (1)
1. a production method for Indian red water purification agent, is characterized in that:
1. iron filings, sulfuric acid are added wiring board waste liquid, heat to 60 ~ 70 DEG C, after 24 hours, separate out copper powder, be first separated copper powder, solution be chilled to room temperature and can obtain Indian red;
2. add in sodium hydroxid by silica sand, heat to 650 ~ 700 DEG C in reverberatory furnace, constant temperature 30 minutes, can obtain water glass;
3. seven aqueous sodium persulfates and water glass are pressed 3:1 mixed after.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410343274.0A CN105271493A (en) | 2014-07-18 | 2014-07-18 | Production method for ferric oxide water purifying agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410343274.0A CN105271493A (en) | 2014-07-18 | 2014-07-18 | Production method for ferric oxide water purifying agent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105271493A true CN105271493A (en) | 2016-01-27 |
Family
ID=55141431
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410343274.0A Pending CN105271493A (en) | 2014-07-18 | 2014-07-18 | Production method for ferric oxide water purifying agent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105271493A (en) |
-
2014
- 2014-07-18 CN CN201410343274.0A patent/CN105271493A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160127 |
|
| WD01 | Invention patent application deemed withdrawn after publication |