Term
justification for silver recovery program |
|
Definition
dwindling worldwide supply of silver monetary return compliance with fed and state pollution laws |
|
|
Term
bans the replacement of toxic substances in public waterways and SEWER SYSTEMS |
|
Definition
water control act of 1972 |
|
|
Term
requires that AVAILABLE DEVICES must remove toxic substances from waste water |
|
Definition
Resources Conservation/ Hazardous Waste Act of 1976 |
|
|
Term
requires the best available methods be used to remove toxic substances from WASTE WATER |
|
Definition
|
|
Term
contains many guidelines affecting film processing and silver recovery methods requires a PERMIT TO DUMP more than 27 gallons of waste per month in public sewers SHIPPING MANIFESTS are required |
|
Definition
Resource Conservation and Recovery Act of 1987 |
|
|
Term
operates by having the fixer drain into the top of a plastic bucket, filter through steel wool, and overflow through a tube connected to bottom of the container |
|
Definition
|
|
Term
no operating costs low initial expense no moving parts/electricity required relatively high efficiency rating |
|
Definition
advantages of metallic replacement |
|
|
Term
not as efficient as other methods silver recovered is in form of sludge unit must be replaced each recovery cycle payments are delayed |
|
Definition
disadvantages of metallic replacement |
|
|
Term
__% of recoverable silver is removed with metallic replacement |
|
Definition
|
|
Term
uses electric current to reclaim silver two types of units used |
|
Definition
electrolytic silver recovery |
|
|
Term
connected to fixer overflow line from processor replenishment system once unit recovers silver, fixer is flushed down the drain |
|
Definition
|
|
Term
designed to recover silver from used fixer and then recirculate fixer back into processor |
|
Definition
recirculating electrolytic |
|
|
Term
silver is recovered in form of silver flake, which ____ pure |
|
Definition
|
|
Term
sludge is only ___ to ___% pure |
|
Definition
|
|
Term
dwell time fixer pH amperage maintenance |
|
Definition
factors affecting silver recovery |
|
|
Term
time that fixer remains in recovery device |
|
Definition
|
|
Term
longer the dwell time, ___ the efficiency |
|
Definition
|
|
Term
fixer pH must be kept below |
|
Definition
|
|