Suspended solids

Suspended solids refers to small solid particles which remain in suspension in water as a colloid or due to the motion of the water. It is used as one indicator of water quality. Suspended solids are important as pollutants and pathogens are carried on the surface of particles. The smaller the particle size, the greater the total surface area per unit mass of particle in grams, and so the higher the pollutant load that is likely to be carried.

Suspended Solids is determined in a laboratory by gravimetric measurement of a discrete sample reporting weight by volume, the amount of suspended solids to categories physical water quality. Turbidity instrumentation is used to predict suspended solids and some on-line instrumentation infer suspended solids concentration from a user calibration. Suspended solids is installed to monitor liquors and for final effluent monitoring to report water quality.