Home | | Aquaculture Engineering | pH of different water sources - Aquaculture Engineering

Chapter: Aquaculture Engineering - Adjustment of pH

Study Material, Lecturing Notes, Assignment, Reference, Wiki description explanation, brief detail

pH of different water sources - Aquaculture Engineering

The pH will of course vary with the water source. Seawater normally has pH value between 7.8 and 8.3 and has a good buffering capacity due to the available free bicarbonate.

pH of different water sources

The pH will of course vary with the water source. Seawater normally has pH value between 7.8 and 8.3 and has a good buffering capacity due to the available free bicarbonate. There is normally no need for pH adjustment. The only exception being when re-using water to a great extent.

 

For fresh surface water, whether river or lake, the pH will be highly dependent on the ground characteristics and whether the catchment area is exposed to acid rain. Normal pH values are between 4 and 8.5. Groundwater has a more stable pH, but the buffering capacity can be reduced and values between 5.5 and 8.5 are common. If there islimestone rock in the catchment area the pH will be high, while the pH of water coming from marshy areas can be low. The alkalinity of the different sources can vary from below 10 mg/l CaCO3 in soft freshwater to several hundred of mg/l CaCO3 in seawater and hard freshwater.10

 

It is important to be aware that there can be fluctuations in the pH of freshwater during the year. Floods during spring may result in dramatic reductions in pH, especially when snow is melting in the catchment area where acid has accumulated in the snow. Also dry weather may affect the pH of the water.

 

Study Material, Lecturing Notes, Assignment, Reference, Wiki description explanation, brief detail


Copyright © 2018-2020 BrainKart.com; All Rights Reserved. Developed by Therithal info, Chennai.