This powerpoint presentation presents AwwaRF Project #3056 - Evaluation of Dynamic
Energy Consumption of Advanced Water and
Wastewater Treatment Technologies. It is
sponsored by AwwaRF and California Energy
Commission, and its stated purpose includes:
quantify actual and theoretical energy
consumption of new treatment technologies;
evaluate factors that affect energy consumption; and,
identify energy optimization opportunities while
maintaining treatment performance. Ultrafiltration practices at two WTPs are summarized, and include: strong correlation between energy consumption
with water production;
increasing efficiency at higher production rates;
no correlation between energy consumption and
water temperature; and,
not enough data between energy consumption
and turbidity. Reverse osmosis (RO) treatment practices at three WTPs are summarized and include: TDS has the largest general impact for energy
consumption;
higher TDS = higher operating pressures = higher
energy use;
other factors, such as organic fouling, have a major
impact;
RO has the highest energy consumption; and,
well and distribution pumping is the largest overall
energy use. Ozonation treatment practices at three WTPs are summarized and include: specific energy consumption can be lowered by
operating at higher ozone concentrations;
increasing by 1 - 2% ozone (by wt) = 2 - 10% energy
savings; and,
restrictions due to gas flow or dosing requirements.
CLCJAWA's purpose for ozonation changed because
facility operating at much lower output than designed, and
result is typical of any system with too much unused
capacity. Other general optimization steps include:
develop a culture of identifying energy savings;
at a minimum, review and compare electricity bills
against water quality and quantity;
inventory your equipment and determine efficiencies;
consider using VFDs instead of pumping against
control valves; and,
incorporate energy data logging capabilities into
SCADA system. Includes tables, figures.
| Edition : | Vol. - No. |
| File Size : | 1
file
, 1.2 MB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 26 |
| Published : | 11/01/2008 |
