CN103553194A

CN103553194A - Rear-earth poly aluminum ferric sulfate and preparation method thereof

Info

Publication number: CN103553194A
Application number: CN201310561665.5A
Authority: CN
Inventors: 乔占印; 乔宇
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-07-31
Filing date: 2013-11-13
Publication date: 2014-02-05

Abstract

The invention discloses rear-earth poly aluminum ferric sulfate. The rear-earth poly aluminum ferric sulfate comprises poly aluminum ferric sulfate, and the rear earth is one or a mixture of lanthanum oxide, lanthanum chloride and lanthanum sulfate. A method of preparing the rear-earth poly aluminum ferric sulfate according to the claims comprises the following steps: (1), reacting 2-3 tons of 30-50wt% food-grade dilute sulfuric acid and 0.1-0.5 ton of ferrous powder as well as 100kg of hydrogen peroxide for 1-5 hours at a normal temperature; (2), heating up to 60-80 DEG C, adding 3-8 kg of lanthanum rear earth and 0.2-0.6 ton of aluminum hydroxide powder, and heating up to 100 DEG C-120 DEG C to react for 2-5 hours; (3), cooling to 60 DEG C, adding 50-100 kg of 5-10wt% bone glue liquor, adjusting the pH value to 3.5-4.0 by use of alkaline liquor, and standing for 3-5 hours to prepare lanthanum rear-earth poly aluminum ferric sulfate liquor. The lanthanum rear earth is one or a mixture of lanthanum oxide, lanthanum chloride and lanthanum sulfate. The rear-earth poly aluminum ferric sulfate disclosed by the invention has the remarkable advantage of being high in turbidity removing rate.

Description

A kind of rare earth PAFS and preparation method thereof

Technical field:

The present invention relates to a kind of sewage-treating agent, especially for a kind of rare earth PAFS of low temperature and low turbidity water tap water and the water treatment of industrial earth's surface and preparation method thereof.

Background technology:

PAFS is a kind of sewage-treating agent, and when low temperature and low turbidity water or high turbidity water treatment, it removes turbidity rate and only has 50% left and right.

Summary of the invention:

The object of the invention is to provide a kind of a kind of rare earth PAFS that turbidity rate is high and preparation method thereof of removing.

The technical scheme that realizes the object of the invention is that a kind of rare earth PAFS, comprises PAFS, it is characterized in that: described rare earth is a kind of of lanthanum trioxide, Lanthanum trichloride and lanthanum sulfat or its mixture.A kind of method of preparing the rare earth PAFS of claim, it is characterized in that there are following steps: (1), by mass concentration, be that 30-50%2-3 ton food grade dilute sulphuric acid and 0.1-0.5 ton iron powder and 100 ㎏ hydrogen peroxide react after 1-5 hour at normal temperatures, (2), be warming up to 60 ℃-80 ℃ and add lanthanum rare earth 3-8 ㎏ and 0.2-0.6 ton aluminium hydrate powder, be warming up to 100-120 ℃, react after 2-5 hour, (3), be cooled to 60 ℃, add the gelatine solution that 50-100 ㎏ mass concentration is 5-10%, by lye pH adjustment value to 3.5-4.0, standing 3-5 hour, make lanthanum rare earth PAFS liquid.Described billows rare earth is a kind of of lanthanum trioxide, Lanthanum trichloride and lanthanum sulfat or its mixture.

The present invention has the high remarkable advantage of the turbidity rate of removal compared with the prior art.

Embodiment:

The present invention has following examples:

Embodiment 1,

(1) by mass concentration, be, that 30-50%2 ton food grade dilute sulphuric acid and 0.1 ton of iron powder and 100 ㎏ hydrogen peroxide react after 1-5 hour at normal temperatures, (2), be warming up to 60 ℃-80 ℃ and add lanthanum trioxide 3 ㎏ and 0.2 ton of aluminium hydrate powder, be warming up to 100-120 ℃, react after 2-5 hour,, be cooled to 60 ℃, add the gelatine solution that 50 ㎏ mass concentrations are 5-10%, by lye pH adjustment value to 3.5-4.0, standing 3-5 hour, makes lanthanum rare earth PAFS liquid.

Embodiment 2,

(1) by mass concentration, be, that 30-50%2 ton food grade dilute sulphuric acid and 0.3 ton of iron powder and 100 ㎏ hydrogen peroxide react after 1-5 hour at normal temperatures, (2), be warming up to 60 ℃-80 ℃ and add Lanthanum trichloride 5 ㎏ and 0.4 ton of aluminium hydrate powder, be warming up to 100-120 ℃, react after 2-5 hour,, be cooled to 60 ℃, add the gelatine solution that 80 ㎏ mass concentrations are 5-10%, by lye pH adjustment value to 3.5-4.0, standing 3-5 hour, makes lanthanum rare earth PAFS liquid.

Embodiment 3,

(1) by mass concentration, be, that 30-50%2 ton food grade dilute sulphuric acid and 0.5 ton of iron powder and 100 ㎏ hydrogen peroxide react after 1-5 hour at normal temperatures, (2), be warming up to 60 ℃-80 ℃ and add lanthanum sulfat 8 ㎏ and 0.2 ton of aluminium hydrate powder, be warming up to 100-120 ℃, react after 2-5 hour,, be cooled to 60 ℃, add the gelatine solution that 100 ㎏ mass concentrations are 5-10%, by lye pH adjustment value to 3.5-4.0, standing 3-5 hour, makes lanthanum rare earth PAFS liquid.

With above-described embodiment, to the method for processing under low temperature and low turbidity water tap water or industrial earth's surface water low temperature, be, with the clear water of 20-30 ℃, lanthanum rare earth PAFS liquid obtained above being diluted to mass concentration is 10-20%, according to the turbidity degree of processed tap water or industrial tap water, by thousand of processed water/0. 3 to 5/1000ths add lanthanum rare earth PAFS liquid, heavy Lake after stirring, removes turbidity rate at 80-90%.

Claims

1. a rare earth PAFS, comprises PAFS, it is characterized in that: described rare earth is a kind of of lanthanum trioxide, Lanthanum trichloride and lanthanum sulfat or its mixture.

2. a method of preparing the rare earth PAFS of claim, it is characterized in that there are following steps: (1), by mass concentration, be that 30-50%2-3 ton food grade dilute sulphuric acid and 0.1-0.5 ton iron powder and 100 ㎏ hydrogen peroxide react after 1-5 hour at normal temperatures, (2), be warming up to 60 ℃-80 ℃ and add lanthanum rare earth 3-8 ㎏ and 0.2-0.6 ton aluminium hydrate powder, be warming up to 100-120 ℃, react after 2-5 hour, (3), be cooled to 60 ℃, add the gelatine solution that 50-100 ㎏ mass concentration is 5-10%, by lye pH adjustment value to 3.5-4.0, standing 3-5 hour, make lanthanum rare earth PAFS liquid.

3. the method for preparing rare earth PAFS as claimed in claim 2, is characterized in that: described billows rare earth is a kind of of lanthanum trioxide, Lanthanum trichloride and lanthanum sulfat or its mixture.