Quartz sand filter for purifying water and filtration method of quartz sand filter

Abstract

The invention discloses a quartz sand filter for purifying water. The quartz sand filter comprises a flushing water inlet valve, an emptying air valve, a back-flushing water inlet valve, a compressedair introducing valve, a flushing draining valve, a draining valve, a flushing draining hole and a back-flushing draining valve. The invention further discloses a filtration method of the quartz sandfilter. The quartz sand filter has the beneficial effects that the quartz sand filter is provided with complete protection devices and monitoring instruments, has a back-flushing function, is capableof rapidly flushing pollutants such as dirt away and is low in water consumption; by virtue of contact flocculation, adsorption and entrapment of a medium on a stock solution under a certain pressure,impurities are removed, and the aim of filtration is achieved; the quartz sand filter is filled with fillings such as quartz sand, anthracite, granular porous ceramic and manganese sand, the fillingscan be selectively used by a user according to actual conditions, the filtration precision is 0.005m-0.01m, and colloidal particles and macromolecule compounds can be effectively removed; and quartzsand has strong dirt entrapment capacity, the removal rate of fine particulate matters such as slit is relatively high, and the quartz sand filter is low in price.

Description

technical field [0001] The invention belongs to the technical field of water purification pretreatment, and in particular relates to a quartz sand filter for water purification and a filtering method thereof. Background technique [0002] With the continuous improvement of human life, the eutrophication of water bodies, ammonia nitrogen, phosphorus and other nutrient salts, and the step-by-step improvement of the National Environmental Protection Agency's sewage discharge standards, the traditional "primary treatment" and "secondary treatment" water treatment technology has been used for many years. And equipment, it has been difficult to adapt to the treatment requirements of today's high turbidity and high concentration sewage, and the treatment process is long, the system is huge, and it also emits a lot of odor. If operators want to meet the latest discharge standards, they need to re-invest high funds to expand the original sewage treatment system, increase the use of l...

AI Technical Summary

Problems solved by technology

[0002] With the continuous improvement of human life, the eutrophication of water bodies, ammonia nitrogen, phosphorus and other nutrient salts, and the step-by-step improvement of the National Environmental Protection Agency's sewage discharge standards, the traditional "primary treatment" and "secondary treatment" water treatment technology has been used for many years. And equipment, it has been difficult to adapt to the treatment requirements of today's high turbidity and high concentration sewage, and the treatment process is long, the system is huge, and it also emits a lot of odor

If operators want to meet the latest discharge standards, they need to invest a lot of money to expand the original sewage treatment system, increase the use of land area, high sewage treatment equipment and high post-maintenance costs. However, the traditional sewage depth Treatment of regeneration and reuse technology systems (such as activated carbon filtration, microporous filtration, permeable membrane purification and other technical systems) requires high investment and high post-maintenance and operation costs, which are unaffordable for too many operators

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