CN1137856C - Process for reclaiming waste generated by grinding bearings - Google Patents
Process for reclaiming waste generated by grinding bearings Download PDFInfo
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- CN1137856C CN1137856C CNB001336533A CN00133653A CN1137856C CN 1137856 C CN1137856 C CN 1137856C CN B001336533 A CNB001336533 A CN B001336533A CN 00133653 A CN00133653 A CN 00133653A CN 1137856 C CN1137856 C CN 1137856C
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- stir
- accordance
- add
- inorganic coagulant
- coagulant
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Abstract
The present invention provides a method for reclaiming the waste water generated by grinding bearings. The method comprises that dimethylbiallyl ammonium chloride as a cationic organic coagulant is added with the stir speed of 150 to 300 rpm, and the concentration of the dimethylbiallyl ammonium chloride is 8 to 10 mg/L; an inorganic coagulant is added after 20 s, and a non-ionic organic high polymer flocculant is added after 20 s continuous stir; the stir speed is reduced to 80 to 120 rpm from 150 to 300 rpm, the stir lasts at least five min and stops, and water can flow out after more than 10 min standing deposition. The processing process of the present invention is mainly used for processing the bearing processing waste water.
Description
Technical field
The present invention relates to the treatment process of waste generated by grinding bearings.
Technical background
The chemical coagulation process is most widely used general in the domestic and international engineering of water treatment, the most general unit operation technology.No matter be city and various industrial water supply or various trade effluent and sludge dewatering treatment, often all coagulating treatment as indispensable preliminary processes key problem in technology link in numerous technical process.The quality of coagulating treatment effect depends on the character of used coagulating agent to a great extent.The coagulating agent that uses mainly can be divided into inorganic coagulant and organic polymer coargulator at present.In water treatment, the advantage of organic floculant is: consumption is few, and the sediment of generation is few, and water ratio is low, and aftertreatment is easier to.But the effect when handling low-cloudy water is not fine, and the water after the processing often clarity is not enough.Water after inorganic flocculating agent is handled is more clear, but consumption is big, and the mud of generation is many and thin, and water ratio is higher, and aftertreatment is difficult.If the two is mixed use, may reach flocculating effect preferably.
In the bearing bruting process, often use some agent of scraping, glitter and tensio-active agent, therefore in cleaning process, produce a large amount of waste water.This water mainly contains suspended particle (being mainly borax), tensio-active agent and a small amount of oil.Because the worsening shortages of water resources, these water need be handled the back reuse.Main in the past the employing used inorganic coagulant separately, as polymerize aluminum chloride, and FeCl
3Deng the method for coagulating sedimentation, or adopt and to add inorganic coagulant earlier, add the method for organic flocculation agent again, as: US patent 4,450,092, US patent 4,746,457, but, introduced a large amount of Cl because the medicament dosage is big
-, caused corrosion during reuse to equipment.Characteristics of the present invention are to have adopted various medicaments, comprise inorganic coagulant, cationic organic coagulating agent, nonionic organic polymer coargulator, have filtered out the best technology that adds, and not only treatment effect is good, and greatly reduces Cl
-The introducing amount, reduced the sludge quantity that produces simultaneously.
Summary of the invention
The object of the present invention is to provide a kind of method of handling waste generated by grinding bearings, adopt various medicaments, adopt the suitable technology that adds, make water outlet effective, reduce and introduce Cl
-Amount, to reach the reuse purpose.
The invention provides a kind of process for reclaiming of waste generated by grinding bearings, comprising:
Under the stirring velocity of 150-300rpm, add the cationic organic coagulating agent of Poly Dimethyl Diallyl Ammonium Chloride, concentration is 8～10mg/L; Add inorganic coagulant after at least 20 seconds; After continuing to stir at least 20 seconds, add the nonionic organic polymer coargulator; Stirring velocity is reduced to 80-120rpm by 150-300rpm then, after continuing to stir 5 minutes at least, stops to stir, and quiescent settling got final product water outlet more than 10 minutes.
In the method for the invention, described inorganic coagulant can be aluminium salt or iron salt coagulant, can be polymerize aluminum chloride, Tai-Ace S 150 and/or iron trichloride.Preferred polymeric aluminum chloride, its dosage is with Al
2O
3The content meter is at 6.0～7.5mg/L.
In the method for the invention, described non-ionic type organic polymer coargulator can be any neutral and organic polymer coargulator with certain molecular weight, and optimization polypropylene acid amides, its dosage are 3～5mg/L.
In the method for the invention, all medicaments preferably added in 1 minute.
Consumption according to test waste water can add quantitative cationic organic coagulating agent under the stirring velocity of 300rpm, add a spot of inorganic coagulant after 20 seconds, after continuing to stir for 20 seconds, adds quantitative nonionic organic polymer coargulator.All medicaments added in 1 minute, and stirring velocity is reduced to 100rpm by 300rpm then, continued to stir after 5 minutes, stopped to stir, and quiescent settling got final product water outlet in 15 minutes.
Treatment process as herein described is mainly used in the processing of bearing processing waste water, but also can be used for tap water, or process such as turbidity removal of other type trade effluent, oil removing, decolouring.
The present invention will be further described below in conjunction with example:
Embodiment 1:
Get above-mentioned waste water 1L, according to above-mentioned experimental technique, under the stirring velocity of 300rpm, add the cationic organic coagulating agent 1g of this laboratory synthetic of 1% (in effective ingredient) successively, 1.5% (with Al
2O
3The content meter) polymerize aluminum chloride 0.5g, the polyacrylamide 2g of 0.2% (in effective ingredient).All medicaments add in 1min, and stirring velocity is reduced to 100rpm by 300rpm then, continue to stir after 5 minutes, stop to stir, and quiescent settling 15min gets final product water outlet.
Embodiment 2:
Get above-mentioned waste water 1L, according to above-mentioned experimental technique, add organic coagulating agent 1g of 1% (in effective ingredient) successively, 1.5% Tai-Ace S 150 0.5g, the polyacrylamide 2g of 0.2% (in effective ingredient).Other step is undertaken by example 1.
Embodiment 3:
Get above-mentioned waste water 1L,, add 1.5% successively (with Al according to above-mentioned experimental technique
2O
3The content meter) polymerize aluminum chloride 0.5g, organic coagulating agent 1g of 1% (in effective ingredient), the polyacrylamide 2g of 0.2% (in effective ingredient).Other step is undertaken by example 1.
Embodiment 4:
Get above-mentioned waste water 1L,, add 1.5% (with Al according to above-mentioned experimental technique
2O
3The content meter) polymerize aluminum chloride 6g.Other step is undertaken by example 1.
Experimental result is as shown in the table:
| Turbidity (NTU) | COD (mg/L) | Cl -(mg/L) | Mud | |
| Former water | 760.5 | 331.0 | 13.97 | - |
| Example 1 | 3.1 | 117.4 | 23.80 | Few |
| Example 2 | 5.3 | 122.3 | 17.26 | More |
| Example 3 | 11.6 | 149.3 | 25.29 | Few |
| Example 4 | 4.0 | 106.7 | 138.32 | A lot |
By The above results as can be seen, the effect of three kinds of composite reagents is best in the example 1, and COD reduces more, is guaranteeing under the effluent quality situation Cl
-The introducing amount is very little, reaches the purpose of mechanical workout reuse substantially.This is because formerly add organic coagulating agent and removed after the suspended particle of most of greater particle size, and remaining less fine colloidal solid only need be can flocculation sediment complete with very a spot of inorganic coagulant, introduced less Cl simultaneously
-, and the sludge quantity that produces is seldom.
Claims (6)
1. the process for reclaiming of a waste generated by grinding bearings comprises:
Under the stirring velocity of 150-300rpm, add Poly Dimethyl Diallyl Ammonium Chloride, concentration is 8～10mg/L;
Add inorganic coagulant after at least 20 seconds;
After continuing to stir at least 20 seconds, add the nonionic organic polymer coargulator;
Stirring velocity is reduced to 80-120rpm by 150-300rpm then, after continuing to stir 5 minutes at least, stops to stir, and quiescent settling got final product water outlet more than 10 minutes.
2. in accordance with the method for claim 1, wherein, described inorganic coagulant is aluminium salt or iron salt coagulant.
3. in accordance with the method for claim 1, wherein, described inorganic coagulant is polymerize aluminum chloride, Tai-Ace S 150 and/or iron trichloride.
4. in accordance with the method for claim 1, wherein, described non-ionic type organic polymer coargulator is a polyacrylamide, and its dosage is 3～5mg/L.
5. in accordance with the method for claim 1, wherein, all medicaments added in 1 minute.
6. in accordance with the method for claim 1, wherein, described inorganic coagulant is a polymerize aluminum chloride, and its dosage is with Al
2O
3The content meter is at 6.0～7.5mg/L.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001336533A CN1137856C (en) | 2000-11-30 | 2000-11-30 | Process for reclaiming waste generated by grinding bearings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001336533A CN1137856C (en) | 2000-11-30 | 2000-11-30 | Process for reclaiming waste generated by grinding bearings |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1355142A CN1355142A (en) | 2002-06-26 |
| CN1137856C true CN1137856C (en) | 2004-02-11 |
Family
ID=4595878
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB001336533A Expired - Fee Related CN1137856C (en) | 2000-11-30 | 2000-11-30 | Process for reclaiming waste generated by grinding bearings |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1137856C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100500255C (en) * | 2005-11-10 | 2009-06-17 | 财团法人工业技术研究院 | Apparatus and method for removing particle from water |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102583817B (en) * | 2012-02-02 | 2014-06-18 | 南京大学 | Printing and dyeing tail water deep treatment and reuse process |
| CN104709989B (en) * | 2015-03-19 | 2017-05-31 | 韩山师范学院 | A kind of coagulant of wastewater treatment and preparation method thereof |
-
2000
- 2000-11-30 CN CNB001336533A patent/CN1137856C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100500255C (en) * | 2005-11-10 | 2009-06-17 | 财团法人工业技术研究院 | Apparatus and method for removing particle from water |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1355142A (en) | 2002-06-26 |
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