Claims
- 1. A method for the treatment of impure aqueous media, comprising coagulating the impurities therefrom with a basic aluminum chlorosulfate of the formula:
- Al.sub.n OH.sub.m (SO.sub.4).sub.k Cl.sub.3n-m-2k
- having a basicity, or ratio m/3n.times.100, of from about 40% to about 60%, and a ratio of Al equivalent /Cl equivalent, or ratio of 3n-3n-m-2k, of from 2.8 to 5.
- 2. The method as defined by claim 1, wherein said basic aluminum chlorosulfate has the following apparent molecular weight and apparent hydrodynamic diameters:
- MA=22,000 to 32,000;
- .phi.Z=1,500 to 2,200 .ANG.;
- .phi.W=800 to 1,100 .ANG..
- 3. The method as defined by claim 1, wherein said basic aluminum chlorosulfate has the following average molecular weight M.sub.w and average real hydrodynamic diameters .phi.Z and .phi.W:
- M.sub.w =10,000 to 30,000;
- .phi.Z=90 to 450 .ANG.;
- .phi.W=50 to 300 .ANG..
- 4. The method as defined by claim 1, wherein said basic aluminum chlorosulfate has the following average molecular weight and average real hydrodynamic diameters:
- M.sub.w =19,000 to30,000;
- .phi.Z=100 to 150 .ANG.;
- .phi.W=60 to 80 .ANG..
- 5. The method as defined by claim 1, wherein said basic aluminum chlorosulfate has a basicity, or ratio m/3n.times.100, ranging from about 45% to about 56%.
- 6. The method as defined by claim 1, wherein said basic aluminum chlorosulfate has from 15 to 25% of the aluminum content thereof being in monomeric form.
- 7. The method as defined by claim 1, wherein said basic aluminum chlorosulfate comprises an aqueous filtrate.
- 8. The method as defined by claim 1, wherein said basic aluminum chlorosulfate has a ratio of Al equivalent/Cl equivalent ranging from above 3.2 to 5.
- 9. The method as defined by claim 1, wherein said basic aluminum chlorosulfate has an average molecular weight M.sub.w of at least 10,000.
- 10. The method as defined by claim 1, wherein said basic aluminum chlorosulfate has the following apparent molecular weight MA and apparent hydrodynamic diameters .phi.Z and .phi.W:
- MA=7,000 to 35,000;
- .phi.Z=350 to 2,500 .ANG.;
- .phi.W=200 to 1,200 .ANG..
Priority Claims (3)
Number |
Date |
Country |
Kind |
85 10708 |
Jul 1985 |
FRX |
|
86 09005 |
Jun 1986 |
FRX |
|
86 09006 |
Jun 1986 |
FRX |
|
Parent Case Info
This application is a divisional, of application Ser. No. 242,608, filed Sept. 8, 1988, now U.S. Pat. No. 4,981,673 which is a divisional of application Ser. No. 884,964 filed July 14, 1986 abandoned.
US Referenced Citations (5)
Foreign Referenced Citations (4)
Number |
Date |
Country |
0218487 |
Apr 1987 |
EPX |
2547695 |
Oct 1974 |
DEX |
2559143 |
Aug 1985 |
FRX |
509981973 |
Jul 1971 |
JPX |
Divisions (2)
|
Number |
Date |
Country |
Parent |
242608 |
Sep 1988 |
|
Parent |
884964 |
Jul 1986 |
|