General knowledge service for sewage treatment: Wu Sheng 13760177211
What are the common knowledge of the application of dewatering filter press in sewage treatment? The following content is the application content compiled by our company.
a. High-quality water: On the basis of municipal water supply (or standard water), coarse filtration, fine filtration and sterilization are used. High quality drinking water obtained by deep processing.
b. Mineral water: valuable water in nature, after simple treatment by sterilization and filtration, it is supplied to consumers as commercial drinking water.
c. Purified water: clean water with almost no impurities obtained by using a water treatment device with a high salt rejection rate, and the electrical conductivity is generally 1.0 to 0.1 uS/cm.
d. The molecular formula of water H2O has a relative molecular weight of 18.015. In water molecules, hydrogen accounts for 11.19% and oxygen accounts for 88.81%.
e. Salt content of water: It is also the degree of mineralization, which means the amount of salt in water, and it can also represent the combination of various anions and cations in water.
f. Hardness: The total concentration of metal ions after the cations in the water combine with anions to form scale.
e. Conductance and resistance: The purer the water, the less salt content, the higher the resistivity and the smaller the conductivity. Ultrapure water is almost impossible to conduct electricity. The size of the conductance is equal to the reciprocal of the resistance value.
g. PH value and pH, the pH value of water is the negative logarithm of the hydrogen ion concentration in water, also known as the hydrogen ion index. It can be known that the aqueous solution is alkaline, neutral and acidic.
h. Pure water: refers to the strong electrolyte in the water and weak electrolytes (such as SiO2, CO, etc.) to remove or reduce the water to a certain extent. Its conductivity is generally: 1.0 ~ 0.1uS / cm, resistivity 1.0 ~ 10.0 * 106.cm, salt content i. Ultrapure water: refers to the almost complete removal of electrolytes in water, while not decomposing gases, colloids and Organic substances (including bacteria, etc.) are also removed to a very low level of water. Its conductivity is generally 0.1 to 0.55 uS/cm, and the resistivity is (25) 18.3*106.cm. Salt content
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