The suspended particles in the water are particles of about 0.1 microns in diameter and can be seen by the naked eye.. These particles are mainly composed of sediment, water, bacteria, bacteria, viruses and polymer organic matters, often suspended in the water, resulting in the turbidity of water. The particles are unstable and can be removed by sedimentation and filtration.. When the water is standing, the heavy particles (mainly the inorganic substances of the sand and clay) will precipitate.. The light particles (the main organic substances of the animal and animal and debris) will float on the water surface and can be removed by filtration and other separation.. Suspended matter is the main source of turbidity, color and smell.. Their content in the water is also unstable, often with the seasons and regions of different and different.