Living bacterial preparation as well as method for preparing and storing same
AssigneeSeiken Kai Foundation
InventorKosei Hata
Life of this patent
Estimating the term…
Abstract
A method for purifying water or a water-containing material which comprises using a single or a few bacterial strains whose growth(s) is or are enabled or promoted by the addition of one or more of S-, N- and C- compounds under a low nutritional condition. A living bacterial preparation, useful for the purification of water or water-containing material, comprising a single or a few bacterial strains whose growth(s) is or are enabled or promoted by addition of one or more of S-, N- and C- compounds under a low nutritional condition is also disclosed.
Claims8
A method for maintaining the water-purifying activity of bacterial strains of Thiobacillus having all the identifying characteristics of any one of F.R.I. Nos. 2546, 2823, 2929 or 4269, Nitrobacter having all the identifying characteristics of any one of F.R.I. Nos. 2545, 4700 or 4701 or Pseudomonas having all the identifying characteristics of any one of F.R.I. Nos. 2822, 2927, 2928, 4264 or 4265 or a mixture thereof, wherein
- (1) said bacteria can grow in an S-W medium consisting of 1 g of KH.sub.2 PO.sub.4, 0.7 g MgSO.sub.4.7H.sub.2 O, 1 g of NaCl, 4 g of (NH.sub.4).sub.2 HPO.sub.4, 0.03 g of FeSO.sub.4.7H.sub.2 O and 5 g of glucose
- (2) said bacteria exhibit(s) a .mu. value larger than that exhibited by coliform bacteria under environmental conditions, and
- (3) said bacteria exhibit(s) promoted growth by the addition of at least one of
- (i) a foul smelling S compound,
- (ii) a foul smelling N compound, or
- (III) a foul smelling C compound,
- which comprises subculturing said bacterial strain(s) in a subculturing medium comprising (A) at least one of a S-, N- and C-compound and/or (B) at least one S-containing amino acid.
Dependencies are inferred from the claim text.