Test anglo 4

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

The main objective of primary treatment of wastewater is to reduce dissolved organic matter. T. F.

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

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

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

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

The BOD measurement has limitations in that it is a slow analysis and only determines biodegradable organic matter. T. F.

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

In grit removal, the flow rate should be increased above the sand grain settling limits, but below the organic matter settling limits. T. F.

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

The use of rotary contact reactors in the treatment of hazardous waste with the presence of biodegradable organic matter reduces sludge production and energy consumption. T. F.

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

The characteristics that make Cl₂ one of the most widely used chlorine reagents in wastewater disinfection are that it is cheaper and more stable than other derivatives in its family. T. F.

Greenhouse gases contribute to global warming by absorbing infrared radiation. T. F.

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

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

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

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

Low-density landfills require that the waste stored in them be covered daily. T. F.

The automotive industry only generates hazardous waste. F. T.

Bag filters are not recommended for treating flammable or explosive particles. T. F.

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

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

In the composting of organic waste, the temperature at which the biological process occurs is a controlled parameter. T. F.

A hazardous waste landfill must be located near an underground aquifer to be able to dispose of and manage leachate. T. F.

It is not necessary to consider the distance to population centers when locating a hazardous waste landfill. The most important thing is that it is located near the industrial area. T. F.

The lower geological barrier of a hazardous waste landfill has a minimum thickness of 5 m. T. F.

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