Nanofiltration water-purification method for purifier

Abstract

The invention discloses a nanofiltration water-purification method for a purifier. The nanofiltration water-purification method comprises the following steps: step 1, filtering via a primary filter screen and active carbon filtering; step 2, filtering via a PP filter core; step 3, filtering via an active carbon filter core; step 4, filtering via a PP filter core; and step 5, filtering via a nanofiltration membrane filter core. According to the method, after basic filtering and adsorption, filtering via the nanofiltration membrane filter core is carried out; after filtering via the nanofiltration membrane filter core, high-voltage static filtering is employed for filtering and disinfection; and each performance index of treated water can reach usage requirements according to testing and probation results.

Description

technical field [0001] The invention relates to a water purifier assembly, in particular to a nanofiltration water purification method for a purifier, belonging to the technical field of water purifiers. Background technique [0002] Water pollution not only aggravates the shortage of water resources, but the deterioration of water quality seriously threatens the physical and mental health of the people; therefore, it needs to be purified according to the characteristics of water pollution. The methods used to remove or reduce organic pollutants in source water include: chemical oxidation, mainly ozone oxidation, hydrogen peroxide oxidation, potassium permanganate oxidation, photocatalytic oxidation and their combined processes, etc.; physical adsorption method , including granular activated carbon adsorption (GAC) and powdered activated carbon adsorption (PAC), etc.; biological oxidation methods, such as biological contact oxidation, aerobic biological filter, biological tu...

AI Technical Summary

Problems solved by technology

[0002] Water pollution not only aggravates the shortage of water resources, but the deterioration of water quality seriously threatens the physical and mental health of the people; therefore, it needs to be purified according to the characteristics of water pollution. The methods used to remove or reduce organic pollutants in source water include: chemical oxidation, mainly ozone oxidation, hydrogen peroxide oxidation, potassium permanganate oxidation, photocatalytic oxidation and their combined processes, etc.; physical adsorption method , including granular activated carbon adsorption (GAC) and powdered activated carbon adsorption (PAC), etc.; biological oxidation methods, such as biological contact oxidation, aerobic biological filter, biological turntable, biological fluidized bed and bio-ceramic technology; Enhanced coagulation method, such as changing the pH value of water, increasing the dosage of coagulant, or rationally adding new organic and inorganic polymer coagulants, etc., to improve coagulation conditions and improve the removal effect of organic matter; Filtration technology, such as ultrafiltration, microfiltration and nanofiltration technology, etc.; according to the characteristics of water source water quality and the water quality requirements for effluent, sometimes several technologies need to be combined to ensure the safety of drinking water; the filter element of the purifier is a water purifier It removes impurities and bacteria in water through physical methods such as filtration and adsorption, and turns tap water into purified water without secondary pollution; existing water purifiers have not yet done a good job of nanofiltration filter elements. well applied