Claims
- 1. A waste water treatment method comprising the steps of:
- mixing said waste water with a reaction filler through at least a first aerobic fluidization zone and a second aerobic fluidization zone wherein said reaction filler is more strongly fluidized in said first zone as compared to said second zone; and said waste water is chemically treated in said first zone and biochemically treated by aerobic microbial degradation in said second zone; said first aerobic fluidization zone being fluidized in an amount sufficient to separate said reaction filler from any microorganisms contained on said reaction filler.
- 2. The method of claim 1 wherein either
- i) said waste water contains fluorine and said reaction filler is calcium carbonate; or
- ii) said waste water contains hydrogen peroxide and said reaction filler is activated carbon.
- 3. The method of 2 further comprising either
- i) measuring fluorine concentration in said second zone when said waste water contains fluorine, and optionally increasing the amount of fluidization in said first zone if said fluorine concentration is greater than a set point; or
- ii) measuring oxidation-reduction potential in said second zone when said waste water contains hydrogen peroxide, and optionally increasing the amount of fluidization in said first zone if said oxidation-reduction potential is greater than a set point.
Priority Claims (1)
Number |
Date |
Country |
Kind |
7-342602 |
Dec 1995 |
JPX |
|
RELATED APPLICATIONS
This application is related to copending commonly assigned application Ser. No. 08/897,454, filed Jul. 22, 1997 naming Kazuyuki Yamasaki, Atsushi Yokotani, Kazuyuki Sakata, Hiroshi Makino and Masanori Sanada as inventors.
US Referenced Citations (8)
Foreign Referenced Citations (4)
Number |
Date |
Country |
54-107153 |
Aug 1979 |
JPX |
5-253576 |
Oct 1993 |
JPX |
5-254829 |
Oct 1993 |
JPX |
6091258 |
Apr 1994 |
JPX |
Non-Patent Literature Citations (2)
Entry |
Translution of Japanese Kokai 54-107153. |
U.S. Application No. 08/897,454, filed Jul. 22, 1997, "Method and Apparatus for Wastewater Treatment by Chemical Reaction of Reactive Filler and Propagated Microorganisms". |