Composite flocculation agent of modified rectorite with polysaccharase
A compound flocculant and polysaccharide compounding technology, which is applied in the direction of flocculation/sedimentation water/sewage treatment, etc., can solve the problems of limited adsorption performance and effect, and achieve the effect of reducing the cost of chemicals
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0016] 10 grams of sodium carbonate and 0.5 gram of sodium polyphosphate are added to 440 grams of hydrated pulpy natural rectorite slurry, and the mass ratio of natural rectorite and water in the slurry is 2:8. The mass content of rectorite is 70%, the fineness is ≤325 mesh, and the specific surface area is 260m 2 / g, density 2.77g / cm 3 , after stirring evenly, put it into a ceramic ball mill for rolling for 3 hours, take out and seal and age for 24 hours to obtain a sodium rectorite slurry for subsequent use; then sodium hydroxide and aluminum chloride are prepared into 1wt% and 2wt% respectively Aqueous solution, and then according to the mass ratio of 1wt% sodium hydroxide aqueous solution: 2wt% aluminum trichloride aqueous solution = 1: 100, mix the two evenly, stir at 70 ° C for 3 hours, and then seal and age for 24 hours to obtain aluminum crosslinked agent for later use; finally, mix the above-prepared aluminum crosslinking agent with the sodium rectorite slurry at a ...
Embodiment 2
[0020] 10 grams of sodium carbonate and 0.5 gram of sodium polyphosphate are added to 460 grams of hydrated pulpy natural rectorite slurry, the mass ratio of natural rectorite and water in the slurry is 2:8, the natural rectorite The mass content of rectorite is 70%, the fineness is ≤325 mesh, and the specific surface area is 260m 2 / g, density 2.77g / cm 3 , after stirring evenly, put it into a ceramic ball mill for rolling for 3 hours, take out and seal and age for 24 hours to obtain a sodium rectorite slurry for subsequent use; then sodium hydroxide and aluminum chloride are prepared into 1wt% and 2wt% respectively Aqueous solution, and then according to the mass ratio of 1wt% sodium hydroxide aqueous solution: 2wt% aluminum trichloride aqueous solution = 1: 100, mix the two evenly, stir at 70 ° C for 3 hours, and then seal and age for 24 hours to obtain aluminum crosslinked agent for later use; finally, mix the above-prepared aluminum crosslinking agent with the sodium rect...
Embodiment 3
[0024] Prepare modified rectorite and natural organic polymer polysaccharide according to the method of embodiment 2, take by weighing 98.8 grams of modified rectorite prepared and 1.2 grams of natural organic polymer polysaccharide, and join in the solid powder ball mill and grind and disperse, through After dispersing and grinding for 30 minutes, the powder fineness is ≤325 mesh, and the finished product of modified rectorite and polysaccharide composite flocculant is obtained.
[0025] Compared with the treatment of printing and dyeing wastewater with this flocculant and a single natural rectorite flocculant, the removal rate of organic pollutants (COD) in water by this flocculant has increased by 12-18%, and the removal rate of suspended solids (SS) in water has increased 16-22%, and the drug cost has dropped by 6-10%. The specific comparison results are shown in Table 1-Table 3.
[0026]
[0027]
[0028]
PUM
| Property | Measurement | Unit |
|---|---|---|
| viscosity | aaaaa | aaaaa |
| specific surface area | aaaaa | aaaaa |
| density | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More