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Excuse me: the filter core with a filtration accuracy of 40 microns can filter out the gypsum (calcium carbonate) in the well water? If the aperture of 40 microns, the filtering effect should be very unsatisfactory. 4 micron or 0.4 micron is about the same (but 0.4 micron may be too good for filtration, at the expense of very slow flow rate)
How scientific treatment of domestic sewage? A company is carrying out sewage treatment (sewage treatment, wastewater treatment): in order to make the sewage meet the water quality requirements of draining a certain water body or using it again,The process of purifying it.Classified by source of sewage,Sewage treatment is generally divided into production sewage treatment and domestic sewage treatment.Production sewage includes industrial sewage, agricultural sewage and medical sewage,Domestic sewage is the sewage produced in daily life.Sewage treatment is widely used in various fields such as construction, transportation, energy, petrochemical, environmental protection, urban landscape, medical care, catering, etc,More and more into the daily life of ordinary people.Modern sewage treatment technology,According to the degree of treatment,Can be divided into Level 1, Level 2 and Level 3 processing.First-level processin
