South Carolina Code of Regulations › Chapter 61 - DEPARTMENT OF HEALTH AND ENVIRONMENTAL CONTROL › Subchapter 61-9 - Water Pollution Control Permits › Subchapter 61-9.503 - STANDARDS FOR THE USE OR DISPOSAL OF SEWAGE SLUDGE › Part E - INCINERATION › Section 61-9.503.E.41 - Special definitions

Current through Register Vol. 48, No. 6, June 28, 2024
(a) "Air
				  pollution control device" is one or more processes used to treat the exit gas
				  from a sewage sludge incinerator stack.
(b) "Auxiliary fuel" is fuel used to augment
				  the fuel value of sewage sludge. This includes, but is not limited to, natural
				  gas, fuel oil, coal, gas generated during anaerobic digestion of sewage sludge,
				  and municipal solid waste (not to exceed 30 percent of the dry weight of sewage
				  sludge and auxiliary fuel together). Hazardous wastes are not auxiliary
				  fuel.
(c) "Average daily
				  concentration" is the arithmetic mean of the concentrations of a pollutant in
				  milligrams per kilogram of sewage sludge (dry weight basis) in the samples
				  collected and analyzed in a month.
(d) "Control efficiency" is the mass of a
				  pollutant in the sewage sludge fed to an incinerator minus the mass of that
				  pollutant in the exit gas from the incinerator stack divided by the mass of the
				  pollutant in the sewage sludge fed to the incinerator.
(e) "Dispersion factor" is the ratio of the
				  increase in the ground level ambient air concentration for a pollutant at or
				  beyond the property line of the site where the sewage sludge incinerator is
				  located to the mass emission rate for the pollutant from the incinerator
				  stack.
(f) "Fluidized bed
				  incinerator" is an enclosed device in which organic matter and inorganic matter
				  in sewage sludge are combusted in a bed of particles suspended in the
				  combustion chamber gas.
(g) "Hourly
				  average" is the arithmetic mean of all measurements taken during an hour. At
				  least two measurements must be taken during the hour.
(h) "Incineration" is the combustion of
				  organic matter and inorganic matter in sewage sludge by high temperatures in an
				  enclosed device.
(i) "Incinerator
				  operating combustion temperature" is the arithmetic mean of the temperature
				  readings in the hottest zone of the furnace recorded in a day (24 hours) when
				  the temperature is averaged and recorded at least hourly during the hours the
				  incinerator operates in a day.
(j)
				  "Monthly average" is the arithmetic mean of the hourly averages for the hours a
				  sewage sludge incinerator operates during the month.
(k) "Performance test combustion temperature"
				  is the arithmetic mean of the average combustion temperatures in the hottest
				  zone of the furnace for each of the runs in a performance test.
(l) "Risk specific concentration" is the
				  allowable increase in the average daily ground level ambient air concentration
				  for a pollutant from the incineration of sewage sludge at or beyond the
				  property line of the site where the sewage sludge incinerator is
				  located.
(m) "Sewage sludge feed
				  rate" is either the average daily amount of sewage sludge fired in all sewage
				  sludge incinerators within the property line of the site where the sewage
				  sludge incinerators are located for the number of days in a 365 day period that
				  each sewage sludge incinerator operates, or the average daily design capacity
				  for all sewage sludge incinerators within the property line of the site where
				  the sewage sludge incinerators are located.
(n) "Sewage sludge incinerator" is an
				  enclosed device in which only sewage sludge and auxiliary fuel are
				  fired.
(o) "Stack height" is the
				  difference between the elevation of the top of a sewage sludge incinerator
				  stack and the elevation of the ground at the base of the stack when the
				  difference is equal to or less than 65 meters. When the difference is greater
				  than 65 meters, stack height is the creditable stack height determined in
				  accordance with
				  40
				  CFR 51.100(ii).
(p) "Total hydrocarbons" means the organic
				  compounds in the exit gas from a sewage sludge incinerator stack measured using
				  a flame ionization detection instrument referenced to propane.
(q) "Wet electrostatic precipitator" is an
				  air pollution control device that uses both electrical forces and water to
				  remove pollutants in the exit gas from a sewage sludge incinerator
				  stack.
(r) "Wet scrubber" is an air
				  pollution control device that uses water to remove pollutants in the exit gas
				  from a sewage sludge incinerator stack.