Claims
- 1. A method of treating sludge comprising biological aggregate which comprises: adding to said sludge from 2 to 15 weight percent of a magnesium compound selected from the group consisting of magnesium hydroxide magnesium chloride, magnesium sulfate and magnesium carbonate and from 2 to 20 weight percent of an iron salt selected from the group consisting of ferrous chloride, ferric chloride, ferrous sulfate and ferric sulfate based on the solid component in said sludge; adding a base to maintain the pH of the sludge at greater than 10.5; and subsequently filtering said sludge.
Priority Claims (2)
Number |
Date |
Country |
Kind |
51-56114 |
May 1976 |
JPX |
|
51-56115 |
May 1976 |
JPX |
|
Parent Case Info
This is a continuation of application Ser. No. 798,171, filed May 18, 1977, now U.S. Pat. No. 4,125,466.
US Referenced Citations (7)
Foreign Referenced Citations (3)
Number |
Date |
Country |
50-103173 |
Aug 1975 |
JPX |
1318861 |
May 1973 |
GBX |
1361042 |
Jul 1974 |
GBX |
Continuations (1)
|
Number |
Date |
Country |
Parent |
798171 |
May 1977 |
|