Factors affecting water treatment equipment performance

1 Temperature

During filtration, the suspension has low temperature, high viscosity, and slow filtration speed. The viscosity of a liquid is an exponential function of temperature, which decreases significantly with increasing temperature. Heating is a simple and effective measure to reduce the viscosity of the oil, but if the temperature is too high, it can easily oxidize the fat, and the filtering temperature generally does not exceed 70 degrees Celsius.water purification equipment

2. Work pressure

The impurities in wool oil are mainly incompressible impurities, with high working pressure and high filtration speed. If the suspended solids in the oil are composed of colloidal substances, as the pressure increases, the gaps in the filtrate decrease, the filtration resistance gradually increases, and the filtration rate rapidly decreases. Therefore, the pressure must be determined according to different situations.

3. Suspension concentration

High concentration and large filtration capacity result in a corresponding reduction in filtration time for each intermittent production cycle, which affects performance. For the operation of continuous vacuum filters, when the concentration is high, the resulting filter is more uniform, easy to clean in a timely manner, and has little impact on performance.

Filter media and filter media

The choice of filtering medium will affect the lightness of the filtered fat and the smoothness of cake unloading. The petroleum industry uses filter media, mainly fabric media. Generally, cotton fabrics such as 20 strands of 5-8 strands of drawing wire, diagonal fabric, and ordinary white fabric are used. The commonly used chemical fibers include 130 #, 240 #, 260 #, 261 # polyester filters and 828 # vinyl filters. More latitude and longitude are used for filtering crude oil, less for filtering essential oils. For some demanding filters, a layer of white thin cloth or down cloth needs to be covered outside the coarse filter. In addition, commonly used stainless steel fiber filters have 30-40 holes/cm for wool oil filtration and 140-180 holes/cm for color changing oil filtration.water purification equipment

For suspensions containing more colloidal particles, adding a filter can effectively improve the filtration speed. Especially for certain process limitations, suspension systems cannot be used to increase filtration temperature, and the application significance of filters is significant. If you want to use extracted oil to obtain edible phosphate, please add diatoms as a filter; During the dewaxing process, it is necessary to filter at a lower temperature, as the role of the filter becomes more apparent.