Ultrafilter Conditions for High Level Waste Sludge Processing
An evaluation of the optimal filtration conditions was performed based on test data obtained from filtration of a High Level Waste Sludge sample from the Hanford tank farms. This evaluation was performed using the anticipated configuration for the Waste Treatment Plant at the Hanford site. Testing was performed to identify the optimal pressure drop and cross flow velocity for filtration at both high and low solids loading. However, this analysis indicates that the actual filtration rate achieved is relatively insensitive to these conditions under anticipated operating conditions. The maximum filter flux was obtained by adjusting the system control valve pressure from 400 to 650 kPa while the filter feed concentration increased from 5 to 20 wt%. However, operating the system with a constant control valve pressure drop of 500 kPa resulted in a less than 1% reduction in the average filter flux. Also note that allowing the control valve pressure to swing as much as +/- 20% resulted in less than a 5% decrease in filter flux.
- Research Organization:
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC05-76RL01830
- OSTI ID:
- 891410
- Report Number(s):
- PNWD-SA-7098; TRN: US0605354
- Journal Information:
- Separation Science and Technology, 41(11):2313-2324, Journal Name: Separation Science and Technology, 41(11):2313-2324
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
HIGH-LEVEL RADIOACTIVE WASTES
RADIOACTIVE WASTE PROCESSING
SLUDGES
HANFORD RESERVATION
PRESSURE DROP
ULTRAFILTRATION
FILTERS
FLOW RATE
Ultrafiltration
High Level Waste
Concentration polarization
Resistance in series
Optimization