Water treatment system for controlling ultrafiltration membrane pollution by catalyzing hydrogen persulfate through ultraviolet coupling ferrous ions and application of water treatment system

Abstract

The invention discloses a water treatment system for controlling ultrafiltration membrane pollution by catalyzing hydrogen persulfate through ultraviolet coupling ferrous ions and the application of the water treatment system. The system comprises a hydrogen persulfate adding device, a ferrous ion adding device, a raw water pipeline, an ultraviolet light emitting device, an advanced oxidation coagulation contact tank, a stirring device, a sedimentation tank and an ultrafiltration membrane device, the drinking water safety is guaranteed by combining advanced oxidation-coagulating sedimentationpretreatment and an ultrafiltration process, and the pollution of an ultrafiltration membrane is controlled by changing characteristics of organic matters and inorganic matters in water in a pretreatment mode. The system has the advantages of simple structure, easy and convenient operation and low treatment cost, Fe2+ ions and PMS can be utilized to the maximum extent, meanwhile, the excellent removal effect on organic pollution and inorganic pollution can be achieved, therefore, the drinking water quality is improved, the ultrafiltration membrane pollution is relieved, and the membrane filtration flux is increased.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and in particular relates to a water treatment system and an application thereof for controlling ultrafiltration membrane pollution by catalyzing bisulfate with ultraviolet coupling ferrous ions. Background technique [0002] Because the ultrafiltration membrane has a rich microporous structure, it can effectively separate certain high-molecular organic colloids, particulate matter, bacteria, etc. in the water body, so that the aqueous solution can pass through the ultrafiltration membrane, thereby achieving the purpose of purifying water. However, in the actual application process, membrane fouling is inevitable, which greatly reduces the operating efficiency of the ultrafiltration membrane system, shortens the service life of the membrane module, and increases the operating cost, which seriously restricts the large-scale development of ultrafiltration technology. Scale application and p...

AI Technical Summary

Problems solved by technology

Only under UV irradiation, the activation rate of PMS is slow, and the rate and number of free radicals generated are small, resulting in long pretreatment time, PMS cannot be fully utilized, and the effect of organic matter removal is not ideal; During raw water treatment, due to the high turbidity and high inorganic pollution of raw water, ultraviolet catalyzed persulfate (UV / PMS) can hardly remove turbidity and inorganic pollution

According to reports, Fe 2+ The catalytic rate of PMS is very fast, and most of them complete the oxidation degradation reaction within 10min, but the Fe 2+ will be generated with reaction, resulting in Fe 2+ and consumption, thus participating in the oxidative degradation of NOM reaction Fe 2+ and Utilization rate is not high

Images