초록 ▼

A method for treating livestock wastewater includes directing screened wastewater to a hydrocyclone/separation tank system. The hydrocyclone directs the wastewater stream in a generally helical fashion to create bubble-particle aggregates. Activating chemicals can be added to the wastewater upstream

A method for treating livestock wastewater includes directing screened wastewater to a hydrocyclone/separation tank system. The hydrocyclone directs the wastewater stream in a generally helical fashion to create bubble-particle aggregates. Activating chemicals can be added to the wastewater upstream of the hydrocyclone or within the hydrocyclone itself. The wastewater is channeled from an outlet of the hydrocyclone through a diffuser to a separation tank, where the bubble-particle aggregates are separated as they rise and accumulate on a free liquid surface of the tank. The treated wastewater settles below the bubble-particle aggregate accumulation and is transferred to a reservoir for later use as irrigation water or barn wash water. Salts may also be removed from the wastewater by filtering the wastewater through salt-removing filters before the wastewater is transferred to the reservoir.

대표청구항 ▼

A method for treating livestock wastewater includes directing screened wastewater to a hydrocyclone/separation tank system. The hydrocyclone directs the wastewater stream in a generally helical fashion to create bubble-particle aggregates. Activating chemicals can be added to the wastewater upstream

A method for treating livestock wastewater includes directing screened wastewater to a hydrocyclone/separation tank system. The hydrocyclone directs the wastewater stream in a generally helical fashion to create bubble-particle aggregates. Activating chemicals can be added to the wastewater upstream of the hydrocyclone or within the hydrocyclone itself. The wastewater is channeled from an outlet of the hydrocyclone through a diffuser to a separation tank, where the bubble-particle aggregates are separated as they rise and accumulate on a free liquid surface of the tank. The treated wastewater settles below the bubble-particle aggregate accumulation and is transferred to a reservoir for later use as irrigation water or barn wash water. Salts may also be removed from the wastewater by filtering the wastewater through salt-removing filters before the wastewater is transferred to the reservoir. d material temperature immediately before said one of plural passes is from 380 to 420° C., and wherein said plate thickness immediately after said one of plural passes is 8 mm or less. 7. The method of manufacturing an Al--Mg--Si series alloy plate as recited in claim 1, wherein said rolling reduction of said cold rolling is 50% or more. 8. The method of manufacturing an Al--Mg--Si series alloy plate as recited in claim 1, wherein said material temperature immediately before said one of plural passes is from 380 to 420° C., and wherein said rolling reduction of said cold rolling is 50% or more. 9. The method of manufacturing an Al--Mg--Si series alloy plate as recited in claim 1, wherein said plate thickness immediately after said one of plural passes is 8 mm or less, and wherein said rolling reduction of said cold rolling is 50% or more. 10. The method of manufacturing an Al--Mg--Si series alloy plate as recited in claim 1, wherein said material temperature immediately before said one of plural passes is from 380 to 420° C., wherein said plate thickness immediately after said one of plural passes is 8 mm or less, and wherein said rolling reduction of said cold rolling is 50% or more.