Sewage treatment flocculant and preparation method thereof

Abstract

The invention discloses a sewage treatment flocculant and a preparation method thereof. The sewage treatment flocculant is prepared from, by weight, 10-20 parts of lignin, 20-40 parts of polyacrylamide, 40-80 parts of trimethylolpropane, 5-15 parts of chitosan quaternary ammonium salt, 5-15 parts of cationic etherified starch, 6-8 parts of polyaluminum ferric sulfate, 8-12 parts of polyphosphoricferric chloride, 10-15 parts of polyaluminum chloride, 8-12 parts of sodium polyacrylate, 8-12 parts of nano silicon dioxide, 1-3 parts of sodium silicate, 2-4 parts of calcium hypochlorite, 10-15 parts of activated carbon and 500-1000 parts of water. The flocculant is good in flocculating performance, small in temperature influence, good in heavy metal removal effect and short in flocculating time, has a certain cleaning effect on organic and inorganic wastes, and can prevent scaling.

Description

technical field

[0001] The invention relates to the technical field of sewage treatment, in particular to a sewage treatment flocculant and a preparation method thereof. Background technique

[0002] Water resource pollution is already one of the most serious social problems. Water pollutants mainly include suspended solids, organic matter, and heavy metal ions. Flocculation is a simple, efficient, low-cost, and widely adaptable treatment method in the process of sewage treatment. By adding flocculants to the water body, the particles that are difficult to separate in the water are in an unstable state, and macromolecular polymers are precipitated. It can be widely used to remove water turbidity and color, organic pollutants, heavy metal ions, etc.

[0003] Flocculants can be roughly divided into three categories: inorganic flocculants, organic flocculants, and microbial flocculants. Specifically: 1) The widely used inorganic flocculants are mainly aluminum salts (aluminum...

Examples

Embodiment 1

[0026] A kind of sewage treatment flocculant, its raw material comprises by weight: 10 parts of lignin, 20 parts of polyacrylamide, 40 parts of trimethylolpropane, 5 parts of chitosan quaternary ammonium salt, 5 parts of cationic etherified starch, polymerized 6 parts of ferric aluminum sulfate, 8 parts of polyphosphorus ferric chloride, 10 parts of polyaluminum chloride, 8 parts of sodium polyacrylate, 8 parts of nano silicon dioxide, 1 part of sodium silicate, 2 parts of calcium hypochlorite, 10 parts of activated carbon , 500 parts of water.

[0027] Polyaluminum ferric chloride is composed of powders with three particle sizes and meshes, the particle sizes and meshes are 30 mesh, 50 mesh and 80 mesh respectively, and the mass ratio of the above three kinds of powders is 7:5:3.

[0028] Nano-silica has a three-dimensional flower-like structure, and its specific surface area is 1000-1200㎡ / g.

[0029] The invention also discloses a preparation method of a flocculant for sewa...

Embodiment 2

[0037] 15 parts of lignin, 30 parts of polyacrylamide, 60 parts of trimethylolpropane, 10 parts of chitosan quaternary ammonium salt, 10 parts of cationic etherified starch, 7 parts of polyaluminum ferric sulfate, 10 parts of polyphosphorus ferric chloride, 13 parts of polyaluminum chloride, 10 parts of sodium polyacrylate, 10 parts of nano silicon dioxide, 2 parts of sodium silicate, 3 parts of calcium hypochlorite, 13 parts of activated carbon, and 750 parts of water.

[0038] Polyaluminum ferric chloride is composed of powders with three particle sizes and meshes, the particle sizes and meshes are 40 mesh, 60 mesh and 90 mesh respectively, and the mass ratio of the above three powders is 8:7:3.

[0039] Nano-silica has a three-dimensional flower-like structure, and its specific surface area is 1000-1200㎡ / g.

[0040] The preparation method of sewage treatment flocculant comprises the following steps:

[0041] (1) preparing nano-silica suspension;

[0042] (2) Polyacrylamid...

Embodiment 3

[0048] A kind of sewage treatment flocculant, its raw material comprises by weight: 20 parts of lignin, 40 parts of polyacrylamide, 80 parts of trimethylolpropane, 15 parts of chitosan quaternary ammonium salt, 15 parts of cationic etherified starch, polymerized 8 parts of ferric aluminum sulfate, 12 parts of polyphosphorus ferric chloride, 15 parts of polyaluminum chloride, 12 parts of sodium polyacrylate, 12 parts of nano silicon dioxide, 3 parts of sodium silicate, 4 parts of calcium hypochlorite, 15 parts of activated carbon , 1000 parts of water.

[0049] Polyaluminum ferric chloride is composed of powders with three particle sizes and meshes, the particle sizes and meshes are 50 mesh, 80 mesh and 100 mesh respectively, and the mass ratio of the above three kinds of powders is 7:9:3.

[0050] Nano-silica has a three-dimensional flower-like structure, and its specific surface area is 1000-1200㎡ / g.

[0051] The preparation method of sewage treatment flocculant comprises th...

technical field

[0001] The invention relates to the technical field of sewage treatment, in particular to a sewage treatment flocculant and a preparation method thereof. Background technique

[0002] Water resource pollution is already one of the most serious social problems. Water pollutants mainly include suspended solids, organic matter, and heavy metal ions. Flocculation is a simple, efficient, low-cost, and widely adaptable treatment method in the process of sewage treatment. By adding flocculants to the water body, the particles that are difficult to separate in the water are in an unstable state, and macromolecular polymers are precipitated. It can be widely used to remove water turbidity and color, organic pollutants, heavy metal ions, etc.

[0003] Flocculants can be roughly divided into three categories: inorganic flocculants, organic flocculants, and microbial flocculants. Specifically: 1) The widely used inorganic flocculants are mainly aluminum salts (aluminum...

Examples

Embodiment 1

[0026] A kind of sewage treatment flocculant, its raw material comprises by weight: 10 parts of lignin, 20 parts of polyacrylamide, 40 parts of trimethylolpropane, 5 parts of chitosan quaternary ammonium salt, 5 parts of cationic etherified starch, polymerized 6 parts of ferric aluminum sulfate, 8 parts of polyphosphorus ferric chloride, 10 parts of polyaluminum chloride, 8 parts of sodium polyacrylate, 8 parts of nano silicon dioxide, 1 part of sodium silicate, 2 parts of calcium hypochlorite, 10 parts of activated carbon , 500 parts of water.

[0027] Polyaluminum ferric chloride is composed of powders with three particle sizes and meshes, the particle sizes and meshes are 30 mesh, 50 mesh and 80 mesh respectively, and the mass ratio of the above three kinds of powders is 7:5:3.

[0028] Nano-silica has a three-dimensional flower-like structure, and its specific surface area is 1000-1200㎡ / g.

[0029] The invention also discloses a preparation method of a flocculant for sewa...

Embodiment 2

[0037] 15 parts of lignin, 30 parts of polyacrylamide, 60 parts of trimethylolpropane, 10 parts of chitosan quaternary ammonium salt, 10 parts of cationic etherified starch, 7 parts of polyaluminum ferric sulfate, 10 parts of polyphosphorus ferric chloride, 13 parts of polyaluminum chloride, 10 parts of sodium polyacrylate, 10 parts of nano silicon dioxide, 2 parts of sodium silicate, 3 parts of calcium hypochlorite, 13 parts of activated carbon, and 750 parts of water.

[0038] Polyaluminum ferric chloride is composed of powders with three particle sizes and meshes, the particle sizes and meshes are 40 mesh, 60 mesh and 90 mesh respectively, and the mass ratio of the above three powders is 8:7:3.

[0039] Nano-silica has a three-dimensional flower-like structure, and its specific surface area is 1000-1200㎡ / g.

[0040] The preparation method of sewage treatment flocculant comprises the following steps:

[0041] (1) preparing nano-silica suspension;

[0042] (2) Polyacrylamid...

Embodiment 3

[0048] A kind of sewage treatment flocculant, its raw material comprises by weight: 20 parts of lignin, 40 parts of polyacrylamide, 80 parts of trimethylolpropane, 15 parts of chitosan quaternary ammonium salt, 15 parts of cationic etherified starch, polymerized 8 parts of ferric aluminum sulfate, 12 parts of polyphosphorus ferric chloride, 15 parts of polyaluminum chloride, 12 parts of sodium polyacrylate, 12 parts of nano silicon dioxide, 3 parts of sodium silicate, 4 parts of calcium hypochlorite, 15 parts of activated carbon , 1000 parts of water.

[0049] Polyaluminum ferric chloride is composed of powders with three particle sizes and meshes, the particle sizes and meshes are 50 mesh, 80 mesh and 100 mesh respectively, and the mass ratio of the above three kinds of powders is 7:9:3.

[0050] Nano-silica has a three-dimensional flower-like structure, and its specific surface area is 1000-1200㎡ / g.

[0051] The preparation method of sewage treatment flocculant comprises th...