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(UN number no longer in use) Organometallic compound or Compound solution or Compound dispersion, water-reactive, flammable, n.o.s. (UN number no longer in use) [1] UN 3208 4.3
Toxic by inhalation liquid, water reactive, flammable, N.O.S. with an inhalation toxicity lower than or equal to 1000 ml/m3 and saturated vapour concentration greater than or equal to 10 LC50 UN 3492: 6.1
UN Number Class Proper Shipping Name UN 3001: 6.1 (UN No. no longer in use) Phenoxy pesticides, liquid, toxic, flammable (UN No. no longer in use) [1] UN 3002 (6.1) (UN No. no longer in use) Phenyl urea pesticides, liquid, toxic (UN No. no longer in use) [1] [2]
Different types of pumps are suitable for different applications, for example: a pump's maximum lift height also determines the applications it can be used for. Low-lift pumps are only suitable for the pumping of surface water (e.g., irrigation, drainage of lands, ...), while high-lift pumps allow deep water pumping (e.g., potable water pumping ...
The system may consist of a single pond or several ponds in a series, each pond playing a different role in the removal of pollutants. After treatment, the effluent may be returned to surface water or reused as irrigation water (or reclaimed water) if the effluent meets the required effluent standards (e.g. sufficiently low levels of pathogens).
Redundancy is built into the system so that in the event that any one pump is out of service, the remaining pump or pumps will handle the designed flow. The storage volume of the wet well between the "pump on" and "pump off" settings is designed to minimize pump starts and stops, but is not so long a retention time as to allow the sewage in the ...