Dry deposition results when particles such as fly ash, sulphates, nitrates, and gases (such as SO2 and NOx), are either deposited or absorbed onto land surfaces. These gases can then be converted into acids when they contact water.
Deep groundwater is generally of very high bacteriological quality (i.e., a low concentration of pathogenic bacteria) but may be rich in dissolved solids, especially carbonates and sulphates of calcium and magnesium.
Climate models, driven by estimates of increasing carbon dioxide and to a lesser extent by generally decreasing sulphate aerosols, predict temperatures will increase by between 1.4 and 5.8 °C in the period 1990 to 2100 [7].
Ferric chloride or sulphate
iron-containing substances used to coagulate and flocculate in effluent treatment processes
Filter press
a device that dewaters sludge by compressing it between membranes or cloth-lined plates to produce a cake ...
Any form of precipitation that carries chemicals (mainly sulphur oxides, sulphates, nitrogen oxides and nitrates, and ammonium compounds) that may cause acidification of surface waters, soils and ecosystems.
Translations of "acid precipitation": ...
One of the major causes of well failure is the chemical and biological incrustation of well screen through precipitation of calcium and magnesium carbonates or sulphates.
The Intergovernmental Panel on Climate Change (IPCC) recently concluded that increased concentrations of greenhouse gases are causing an increase in the Earth's surface temperature and that increased concentrations of sulphate aerosols have led to ...
 See also: Water, Waste, Environment, Reduction, Environmental
  
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