Filter Press Operation: Pretreatment for Slurry before Filtering from Leo Filter Press,Filter Press Manufacturer from China

Leo company's product prototype.

Filter Press Operation: Pretreatment for Slurry before Filtering from Leo Filter Press,Filter Press Manufacturer from China

Slurry Pretreatment with Flocculent Material Before Filtering,Get Better Filtering Efficiency

1.acid and alkali

the normal acid and alkali,such as H2SO4,HCL,NaOH,Ca(OH)2 etc,to adjust PH value

2. AlCl2.6H2O

20% Al2O3 water solution(AlCl3.6H2O)is the main resource for Al+

3.Al2(SO4)3.18H2O

4.(Al2(OH)nCl6-n)m PAM

5.FeCl3.6H2O

6.FeSO4.7H2O

Natural Flocculant Agent

1. starch

insoluble in water,it will trun to sticky,half clear colloid

2.osseocolla,gelatin

3.Guar gum

4.Tannic acid

5.Sodium alginate

How to choose flocculant agent

It is a hard work,and also very complicated,there are many factorrs will insult the sizing,such as solid content and mixing degree,price and its sales channels,application,dangerous,etc.

Other chemical and physical Method

1. adjust solution PH value

2.decrease viscocity

to decrease viscocity can increase filtering efficiency,to get less moisture content filter cakes and higher solid content for the cakes

3.degas

by filtering with high pressure,heating or filter by vaccum method to decrease operation cost

4. freezing

not economic,only for hazard wastes

5. super sonic