Wastewater treatment for the production of microbial biomass
AssigneeOberon Fmr, Inc.
InventorsAndrew J. LOGAN, Kathryn R. SPANGLER
Life of this patent
Estimating the term…
Abstract
A method of producing microbial biomass include providing a wastewater stream and determining the concentration of micronutrients selected from the group consisting of aluminum, boron, cobalt, magnesium, manganese, and zinc, and any combination thereof, in the wastewater stream. The method also includes determining the biological oxygen demand (BOD) normalized dose of the micronutrients, and modulating the concentration of at least one micronutrient in the wastewater stream to provide a micronutrient-modulated wastewater stream. The method further includes growing microbial biomass in the micronutrient-modulated wastewater stream.
Claims23
A method for growing microbial biomass comprising:
- (a) providing a wastewater stream;
- (b) determining the concentration of micronutrients selected from the group consisting of aluminum, boron, cobalt, magnesium, manganese, and zinc, and any combination thereof, in the wastewater stream;
- (c) determining the biological oxygen demand (BOD) normalized dose of the micronutrients;
- (d) modulating the concentration of at least one micronutrient in the wastewater stream to provide a micronutrient-modulated wastewater stream, whereby said micronutrient-modulated wastewater stream has (i) a BOD normalized dose of aluminum between about 60 mg/day/lb BOD/day and about 285 mg/day/lb BOD/day;
- (ii) a BOD normalized dose of boron between about 115 mg/day/lb BOD/day and about 300 mg/day/lb BOD/day;
- (iii) a BOD normalized dose of cobalt between about 50 mg/day/lb BOD/day and about 500 mg/day/lb BOD/day;
- (iv) a BOD normalized dose of magnesium of at least about 100 mg/day/lb BOD/day;
- (v) a BOD normalized dose of manganese between about 65 mg/day/lb BOD/day and about 220 mg/day/lb BOD/day;
- and (vi) a BOD normalized dose of zinc between about 115 mg/day/lb BOD/day and about 275 mg/day/lb BOD/day;
- and
- (e) growing microbial biomass in the micronutrient-modulated wastewater stream.
17-21. (canceled)
A method for growing microbial mass comprising:
- (a) providing a wastewater stream;
- (b) determining the concentration of a plurality of micronutrients in the wastewater stream, the micronutrients including aluminum, boron, calcium, cobalt, magnesium, manganese, and zinc, and determining the concentration of the macronutrients nitrogen and phosphorus in the wastewater stream;
- (c) determining the biological oxygen demand (BOD) normalized dose of one or more of the micronutrients in the wastewater stream;
- (d) modulating the concentration of at least one of the one or more micronutrients in the wastewater stream to provide a micronutrient-modulated wastewater stream, whereby said micronutrient-modulated wastewater stream has (i) a BOD normalized dose of aluminum of between about 60 mg/day/lb BOD/day and about 285 mg/day/lb BOD/day;
- (ii) a BOD normalized dose of boron of between about 115 mg/day/lb BOD/day and about 300 mg/day/lb BOD/day;
- (iii) a BOD normalized dose of cobalt varies of between about 50 mg/day/lb BOD/day and about 500 mg/day/lb BOD/day;
- (iv) a BOD normalized dose of magnesium of at least about 100 mg/day/lb BOD/day;
- (v) a BOD normalized dose of manganese of between about 65 mg/day/lb BOD/day and about 220 mg/day/lb BOD/day;
- and (vi) a BOD normalized dose of zinc of between about 115 mg/day/lb BOD/day and about 275 mg/day/lb BOD/day;
- (e) modulating the concentration of at least one macronutrient in the wastewater stream to provide a macronutrient-modulated wastewater stream that has (i) a BOD:nitrogen ratio of at least about 100 mg/liter BOD:6-20 mg/liter nitrogen;
- and (ii) a BOD:phosphorus ratio of at least about 100 mg/liter BOD:0.5-2 mg/liter phosphorus;
- and
- (f) growing microbial biomass in the macronutrient-modulated and micronutrient-modulated wastewater stream.
25-50. (canceled)
A micronutrient composition for growing bacterial mass comprising a mixture of micronutrients, the micronutrients comprising:
- aluminum;
- boron;
- calcium;
- cobalt;
- magnesium;
- manganese;
- and zinc, wherein the micronutrient composition is used to modulate the concentration of the micronutrients in an wastewater stream, wherein adding the micronutrient composition to the wastewater stream, the micronutrient-modulated wastewater stream has (i) a biological oxygen demand (BOD) normalized dose of aluminum of between about 60 mg/day/lb BOD/day and about 285 mg/day/lb BOD/day;
- (ii) a BOD normalized dose of boron of between about 115 mg/day/lb BOD/day and about 300 mg/day/lb BOD/day:
- (iii) a BOD normalized dose of cobalt of between about 50 mg/day/lb BOD/day and about 500 mg/day/lb BOD/day;
- (iv) a BOD normalized dose of magnesium of at least about 100 mg/day/lb BOD/day;
- (v) a BOD normalized dose of manganese of between about 65 mg/day/lb BOD/day and about 220 mg/day/lb BOD/day;
- and (vi) a BOD normalized dose of zinc of between about 115 mg/day/lb BOD/day and about 275 mg/day/lb BOD/day.
(canceled)
Dependencies are inferred from the claim text.