CONVERTING FOOD WASTE INTO ENERGY AND FERTILIZER

heehawultraMechanics

Feb 22, 2014 (3 years and 6 months ago)

70 views

CONVERTING FOOD WASTE INTO

ENERGY AND FERTILIZER


How using an
InSinkErator
®

disposer allows capable wastewater treatment
plants to recycle food waste into renewable energy and fertilizer

COLLECTION

Food waste disposers grind food
scraps into fine particles, which flow
through the sewer system to a
wastewater treatment facility.

BAR SCREEN

Screens and grates remove large
objects before the wastewater
moves to settling tanks.

SEDIMENTATION

Material that floats is skimmed from
the surface and material that
settles is scraped from the tank
bottom.

AERATION

Microscopic organisms break down
the remaining organic material in
the water.

CLARIFICATION

Secondary sedimentation separates
clean water from the remaining
solids which are either digested or
returned to the aeration tanks to
further continue the process.

DISCHARGE

Treated and disinfected wastewater
is discharged into nearby waters.

DIGESTERS

Anaerobic digesters use
microorganisms that digest the solids
and release methane gas which can
be used to generate power.

POWER GENERATION

Methane from the treatment
process is used to power the facility.

BIOSOLIDS

A product of the digestion process
are
biosolids
, which can be
converted into fertilizer or soil
conditioner used in agriculture and
home gardening.