Study On Particle Monitoring Technique In Water

Several particle monitoring techniques used commonly in drinking water and main application conditions of the particle monitoring techniques in water treatment process are introduced in this paper.It discusses the replaceale parameter of particles in water—turbidity which have problem in detecting bigger particles in water and detecting low turbidity water,turbidity also can't meet the requirement of high accuracy monitoring water and process pontrol.This paper introduces technique of transmitted light fluctuation what eked out turbidity.We discusse and draw a comparison of these technique through research,so as to choose and apply.Online turbidimeter,transmitted light fluctuation instrument and particle counting instrument are used to monitor the particles in Diatomite solution,Kaolin solution and mixed solution in experiments,we discusse the correlation of them.In the experimentation of homology particle distribution,there are good correlations between turbidimeter and particle counting instrument,turbidity can double for particle in water.Each distribution particle increases are proportionate to the increases in the particle concentration.In the experimentation of different particle distribution,there are no correlations among turbidimeter,particle counting instrument and transmitted light fluctuation instrument.The water which turbidity is higher,particle count and particle index are low.The water which particle and particle index are lower,turbid ity is high.Monitoring results of filtered water by micro-flocculation and direct-filtration process indicate that these instrument can effectual detect change of particle in water, but different detect elements,different effective particle size monitoring ranges and different sensitivity result in different curve of filtration.Transmitted light fluctuation instrument and particle counting instrument can more early and sensitive show paticle changed than turbidimeter.Monitoring filtration process results of different filtrable parameter indicate that turbidimeter can't effective show small changed of particle in water.But transmitted light fluctuation instrument and particle counting instrument can do it,they can help us to know and control treatment efficiency and water quality changed in water trement process,and they also can help us to optimize technics parameter and improve water quality.