A: Vacuum filtration, also known as “suction filtration,” is an application that uses vacuum-generating equipment, such as vacuum pumps, to accelerate the separation of solid-liquid mixtures. The equipment used typically includes a Buchner funnel, a filtration flask, and a vacuum pump. When selecting an appropriate micro vacuum pump, two main factors should be considered:(1) Consider the pressure resistance of the funnel and filter paper to determine the required vacuum level for the pump.(2) Consider the power supply for the application scenario. For example, when used in the field without mains power, a low-power micro vacuum pump powered by batteries can

A: In the field of chemical analysis, gas washing typically involves bubbling gas through a washing bottle filled with liquid to remove impurities soluble in the liquid or to remove or convert specific components through reaction with the liquid. In aquaculture, aeration increases the dissolved oxygen levels in the water. In wastewater treatment, the purpose of aeration is to prevent solids from settling in the tank, enhancing contact between organic matter, microorganisms, and dissolved oxygen, thus ensuring the oxidation and decomposition of organic pollutants by microorganisms under sufficient oxygen conditions. Both aeration and gas washing usually require the exhaust tube