8 January
Shear membrane filters versus FOG
FOG disposal - landfill, biodiesel, soap manufactures, anaerobic digesters
anaerobic digesters produce biogas
Eastbay Mud in California has produced enough Biogasses to be net zero
They use the biogas to make CNG to power their vehicles, and burn it in a boiler to produce electricity
CNG is 99% methane, and is gaseous
Air to fuel ratio ideal air-to-cng is 30:1 (lean burn - burns a lot hotter)
burning hot produces more NOx, above 1400 Farenheitt, which burns the N2 in the atmosphere
Ideal burning temp for natural gas: 1100 to 1400 degrees (hot enough to burn CO)
CO has energy value
WAS - main reason to send to the lagoons to digest - purpose, reduce vector attraction, thereby reducing waterborne disease
Later goals:
- reducing fish kills
- reducing smells
Supreme court case: Ruling against Chevron, vs EPA trying to govern EPA (2024)
Rules defining "navigable waters" (Tom Bigby)
Propeller boats are very inefficient in terms of mpg - 150 gallons to go 60 miles
SARP10 - Chris Morrical
Menonites will level the sludge drying fields - to prevent ponding, to not attract mosquitoes.
They also level the rice fields in Arkansas.
They use lasers and tractors.