backwashing การใช้

• A typical grain distribution exits due to the frequent backwashing.
• Backwashing involves inverting the direction of liquid flow while using clean liquid.
• Ineffective backwashing is one of the main reasons that water treatment filters fail.
• Extremely high iron concentrations may require inconvenient frequent backwashing and / or regeneration.
• Effective backwashing occurs when the filter medium is fluidized.
• It closes automatically, keeping fuel from backwashing.
• Eminem is backwashing poison into my soda and then patting me on the rear.
• Backwashing of granular media filters involves several steps.
• Unfortunately, the backwashing operation wastes water.
• During backwashing, water ( and air ) is pumped backwards through the filter system.
• Maintenance means backwashing where the flow of clean water is reversed back into the filter.
• :: : Recent studies have assessed to combine relaxation and backwashing for optimum results,.
• Slow sand filters and self-cleaning screen filters employ mechanisms other than backwashing to remove trapped particles.
• Relaxation and backwashing effectiveness will decrease with operation time as more irreversible fouling accumulates on the membrane surface.
• A typical backwashing session can waste a few hundred gallons of water  water that must be replaced.
• Alternatively, in engineering applications, such as swimming pool water treatment plants, they may be cleaned by backwashing.
• Self-cleaning screen filters utilize point-of-suction backwashing to clean the screen without interrupting system flow.
• Finally, iron filter media requires high flow rates for proper backwashing and such water flows are not always available.
• Small amounts of sand can be lost in the backwashing process and the bed may need to be topped up periodically.
• Backwashing is an important operation employed to remove filtered solids as this build up causes resistance to filtration to increase with time.