Method of treating wastewater containing organic compound

A method of treating an organic substance containing waste liquid, comprising:

• contacting an organic substance containing waste liquid and an activated sludge to produce a mixture, wherein said activated sludge comprises bacteria from
• (i) an Alcaligenes selected from the group consisting of Alcaligenes faecalis, Alcaligenes pacifica, Alcaligenes aquamarina and Alcaligenes venustus,
• (ii) a Sphingobacterium selected from the group consisting of Sphingobacterium faecium, Sphingobacterium spiritivorum, Sphingobacterium multivorum, and Sphingobacterium mizutae,
• (iii) Shewanella algae,
• (iv) a Rhodobacter selected from the group consisting of Rhodobacter litoralis, Rhodobacter veldkampii, Rhodobacter massiliensis, Rhodobacter sphaeroides, and Rhodobacter azotoformans,
• (v) Micrococcus luteus,
• (vi) a Paracoccus selected from the group consisting of Paracoccus denitrificans, Paracoccus pantotrophus, and Paracoccus thiophilus,
• (vii) Bosea thiooxidans, and
• (viii) Paracoccus verustus, wherein the Alcaligenes is bacterial strain IBI-2P, Accession No. FERM BP-10565, the Sphingobacterium is bacterial strain IBI-3P, Accession No. FERM BP-10566, the Shewanella algae is bacterial strain IBI-6P, Accession No. FERM BP-10568, the Rhodobacter is bacterial strain IBI-15P, Accession No. FERM BP-10570, the Micrococcus luteus is bacterial strain IBI-40P, Accession No. FERM BP-10571, the Paracoccu is bacterial strain IBI-6, Accession No. FERM BP-10567, the Bosea thiooxidans is bacterial strain IBI-13 designated as Accession No. FERM BP-10569, and the Paracoccus verustus is bacterial strain IBI-2, Accession No. FERM BP-10564.