Entrapping immobilization pellets and process for producing the same
Entrapping immobilization pellets in which anaerobic ammonium oxidizing bacteria are entrapped and immobilized in an immobilizing material, comprising: fine activated carbon powder and/or fine metal powder such as magnetite or iron powder.
1 . Entrapping immobilization pellets in which anaerobic ammonium oxidizing bacteria are entrapped and immobilized in an immobilizing material, comprising:
fine activated carbon powder and/or fine metal powder such as magnetite or iron powder.
2 . The entrapping immobilization pellets according to claim 1 , wherein there are cells of the anaerobic ammonium oxidizing bacteria at a VSS concentration of 100 mg/L to 3,000 mg/L.
3 . The entrapping immobilization pellets according to claim 1 , wherein there are the fine activated carbon powder and/or the fine metal powder such as magnetite or iron powder in an amount of 0.05 mass % to 5 mass % based on the entrapping immobilization pellets.
4 . The entrapping immobilization pellets according to claim 2 , wherein there are the fine activated carbon powder and/or the fine metal powder such as magnetite or iron powder in an amount of 0.05 mass % to 5 mass % based on the entrapping immobilization pellets.
5 . A process for producing entrapping immobilization pellets in which anaerobic ammonium oxidizing bacteria are entrapped and immobilized in an immobilizing material, comprising the steps of:
mixing the anaerobic ammonium oxidizing bacteria with fine activated carbon powder and/or fine metal powder such as magnetite or iron powder, and
mixing the immobilizing material with the mixture to form a gel.
6 . The process for producing entrapping immobilization pellets according to claim 5 , wherein the entrapping immobilization pellets comprise cells of the anaerobic ammonium oxidizing bacteria at a VSS concentration of 100 mg/L to 3,000 mg/L, and comprise the fine activated carbon powder and/or the fine metal powder such as magnetite or iron powder in an amount of 0.05 mass % to 5 mass % based on the entrapping immobilization pellets.
7 . Wastewater treatment equipment, comprising:
a biological treatment tank packed with the entrapping immobilization pellets according to claim 1 .
8 . Wastewater treatment equipment, comprising:
a biological treatment tank packed with the entrapping immobilization pellets according to claim 2 .
9 . Wastewater treatment equipment, comprising:
a biological treatment tank packed with the entrapping immobilization pellets according to claim 3 .
10 . Wastewater treatment equipment, comprising:
a biological treatment tank packed with the entrapping immobilization pellets according to claim 4.