Types of slime in P-TRAP DWV CP C*C
1. Mud can be divided into two types: adhesion type slime and accumulation type sludge. Generally speaking, adhesion-type slime has a burning loss of more than 25% and contains a large amount of organic matter (mainly microorganisms). Accumulated silt, its ignition loss is less than 25%, the relative microbial content is relatively low, and there are more inorganic components such as mud and sand. Of course, the ignition loss also includes the amount of organic matter other than microorganisms. Therefore, to accurately distinguish, the quality of the sufficient protein (only microorganisms) should be measured.
2. Mud attachment mechanism: It is generally believed that microorganisms in water attach to a solid surface, which is beneficial to the use of nutrients, so microorganisms have a tendency to grow on solid surfaces. This form of adhesion also progresses on the surface of suspended solids in the water, generating microbial flocs, which adhere to the metal surface and accelerate the adhesion of slime.
The adhesion process of slime is divided into three periods, namely the initial adhesion period, the logarithmic adhesion period and the stable adhesion period. The stable adhesion period means that the adhesion speed of slime and the peeling speed of slime caused by water flow are in equilibrium.
3. The mechanism of sludge accumulation: the suspended matter in the cooling water is flocculated due to the action of the mucilage produced by microorganisms. In the production of flocs, it will settle to form sludge at low flow rates. People call the flocculation phenomenon involving microorganisms as biological flocculation. In addition, the flocculation of inorganic substances is also the cause of sludge accumulation.