Other types of filters For filter performance test bench, this test bench must strictly purify the system before testing, so the test system and the pollution injection system serving the test system need to be equipped with a filter, in this, the filter and the tested filter are two different things. its accuracy requirements, the dirt tolerance requirements are higher than the tested filter accuracy, in order to distinguish the two types of filters in the same test system, this filter is called a test bed filter, and the filter being tested is called a test filter. The most commonly used method of mechanical filtration sewage treatment is that according to the different filter media, the mechanical filtration equipment is divided into two categories: Particle Media filtration and fiber filtration. Particle Media filtration is mainly used as filter media such as sand and gravel, through the adsorption effect of particle filter material and the interception effect of pores between sand particles on solid susp
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Why can air conditioning reduce negative ions in air? The reason for the decrease of air negative ion concentration in air-conditioned rooms is many aspects,First,Fresh air enters the room through air conditioning duct,Will consume some of the Air ions,The influence of metal air duct is obvious.When air flows through the air duct,The 'brown' movement caused some ions to collide with the pipe wall,Due to the good electrical conductivity of the metal,The chances of ion being adsorbed or compounded during collision are greatly increased,Resulting in a decrease in ion concentration.Secondly,Air filters also have varying degrees of influence on ion concentration.Dry fiber filters are generally used in air conditioning systems,The filter material has fiberglass, synthetic fiber, asbestos fiber and filter paper or filter cloth made of these fibers.The diameter of the dust particles effectively captured by the general coarse filter is ≥ 5 μm,Medium efficiency filter ≥ 1 μm,Efficient filter
