Monitoring of rain events with a submersible UV/VIS spectrophotometer.
A submersible UV/VIS spectrophotometer has been implemented on the pre-treatment unit of a large-scale wastewater treatment plant (350,000 person-equivalent) to monitor the rapid changes in total Suspended Solids and total Chemical Oxygen Demand occurring during rain events as well as injections of reject water from the sludge treatment train or wasted activated sludge. Calibration has been proven to be difficult for fast composition-varying streams but the device is able to monitor qualitatively sudden quality changes, in spite of the noise affecting the signal.
Maribas
Aurélien
A
GEMCEA, 149 rue Gabriel Péri, F-54500, Vandoeuvre-les-Nancy, France philippe.battaglia@gemcea.u-nancy.fr.
Laurent
Nadège
N
Battaglia
Philippe
P
do Carmo Lourenço da Silva
Maria
M
Pons
Marie-Noële
MN
Loison
Bernard
B
D002138:Calibration; D011891:Rain; D012722:Sewage / Q000032:analysis*; D013053:Spectrophotometry; D013056:Spectrophotometry, Ultraviolet; D014865:Waste Disposal, Fluid / Q000295:instrumentation / Q000379:methods*; D014874:Water Pollutants, Chemical / Q000032:analysis; D018508:Water Purification / Q000295:instrumentation / Q000379:methods*
D012722:Sewage; D014874:Water Pollutants, Chemical