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What are the filter classification? The filter is different according to the method of obtaining the filter driving force,It is divided into three categories: gravity filter, vacuum filter and pressure filter.With the help of the gravity and position difference of the suspension, the pressure formed on the filter medium is used as the driving force of the filter,Generally intermittent operation,Such as sand.Negative pressure is formed at the outlet of the filter as the driving force for filtration.The absolute pressure of the industrial vacuum filter to operate the vacuum is (2.5 ~ 8.0) x 105 Pa.The temperature of the suspension should be lower when filtering than the vaporizing temperature of the filter under the operating vacuum.This filter is divided into two types: intermittent operation and continuous operation.A vacuum filter operated intermittently filters suspension at various concentrations.The vacuum filter is filled with suspension in the container housing.The filter leave

What is the main purpose of the pre-filter of the zebra fish ultra-filtration water purifier? At the front end of the home tap water pipeline (behind the water meter), filter the sediment, rust and large particles in the tap water to prevent a large number of precipitated impurities in the water network from causing harm to the human body, and it plays a pre-protection role for household appliances with water.

How can the domestic sewage of the hotel be filtered and purified again without sewage discharge? Domestic sewage is the wastewater discharged from residents' daily life,Mainly from residential buildings and public buildings,Such as housing, institutions, schools, hospitals, shops, public places and industrial enterprise toilets.The pollutants contained in domestic sewage are mainly organic matter (such as protein, carbohydrates, fat, urea, ammonia nitrogen, etc.) and a large number of pathogenic microorganisms (such as parasite eggs and intestinal infectious diseases, etc ).The organic matter existing in domestic sewage is extremely unstable,It is easy to corrupt and stink.Bacteria and agents breed in large quantities with organic matter in domestic sewage as nutrients,Can lead to the spread of infectious diseases.So,Domestic sewage must be treated before discharge.[1] The most important domestic sewage is PH,Suspended matter,Chemical oxygen demand,Ammonia nitrogen,Total phosphorus,These values of residual c