TMA test 2017 (UPNA)

Natural waters do not have to be treated before consumption. T. F.

The limitation of BOD measurement is that it is a slow analysis and only determines biodegradable OM. T. F.

The main objective of primary treatment of a WW is to reduce dissolved Inorganic Matter (IM). T. F.

The absence of coliform bacteria in a WW ensures that there is no bacterial contamination. T. F.

Sludge generated in a wastewater treatment plant can be used to produce compost. T. F.

The pH of wastewater depends on the concentration of ions it contains. T. F.

The biodegradability of wastewater depends on the chemical structure of the OM it contains. T. F.

A river with eutrophication problems has high concentrations of metal cations. T. F.

In grit removal, the WW velocity must be increased above the precipitation limits of sand grains but below the sedimentation limits of OM. T. F.

Aerated lagoons are suspended culture aerobic treatments that occupy land areas of up to 5000m2. T. F.

Chlorine (Cl2) is one of the most used reagents in WW disinfection because it is cheaper and more stable than other derivatives of its family. T. F.

The use of rotating contact reactors in the treatment of WW with biodegradable OM reduces sludge production and energy consumption. T. F.

Greenhouse gases contribute to global warming through absorption of infrared radiation. T. F.

Secondary gaseous pollutants produce more severe effects than primary ones. T. F.

Tropospheric ozone is a pollutant that, if it exceeds certain levels, can be very dangerous. T. F.

Nitrogen oxides are removed from the atmosphere by particle formation. T. F.

The use of bag filters is not recommended to treat flammable or explosive particles. T. F.

It is necessary to know the size and composition of particles to correctly select the type of equipment for particle removal. T. F.

One of the most common configurations is using a cyclone followed by an electrostatic precipitator. T. F.

Packed columns can simultaneously remove particles and pollutant gases. T. F.

To properly manage waste, it is important to know its chemical composition. T. F.

Low-density landfills require stored waste to be covered daily. T. F.

In composting organic waste, the process temperature is a controlled parameter. T. F.

Automotive industries only generate hazardous waste. T. F.

The lower geological barrier of an HW landfill has a minimum thickness of 5m. T. F.

An HW landfill must be located near an underground aquifer to discharge and manage leachates. T. F.

It is not necessary to consider the distance to population centers when placing an HW landfill; proximity to industry is most important. T. F.

Landfills should be considered as the last and necessary option in waste management. T. F.