CN104209101A - Modified attapulgite used for treating heavy-metal-containing sewage and preparation method thereof - Google Patents

Abstract

A modified attapulgite used for treating heavy-metal-containing sewage is prepared from following raw materials comprising, by weight, 2-3 parts of glycerol ester of rosin, 3-5 parts of ferric oxide, 2-3 parts of sodium acetate, 0.3-0.5 parts of sodium carboxymethylcellulose, 2-3 parts of acrylate of hydroxyl ketal ester, 0.1-0.2 parts of potassium peroxodisulfate, 0.4-0.7 parts of hydrogen peroxide, 0.2-0.3 parts of coconut diethanolamide, 2-3 parts of chitosan, 2-3 parts of propolylated trimethylolpropane triacrylate, 3-5 parts of acrylamide, 3-5 parts of neopentyl glycol, 100-120 parts of attapulgite, a proper amount of water, 5-10 parts of additives, and 30-40 parts of a 8-10% hydrochloric acid solution. The attapulgite is modified with the ferric oxide, the chitosan and the acrylamide, is good in flocculation effect, has excellent adsorption and chelating performance to heave metal ions, such as copper and the like, and has a removing ratio reaching 75%.

Description

A kind of attapulgite modified and preparation method thereof for the treatment of containing heavy metal containing sewage

Technical field

The invention belongs to attapulgite manufacture field, particularly a kind of attapulgite modified and preparation method thereof for the treatment of containing heavy metal containing sewage.

Background technology

Attapulgite is a kind of crystalloid hydrous magnesium aluminium silicate mineral, has unique layer chain structure feature, in its structure, there is crystal lattice, Na+, Ca2+, Fe3+, Al3+ containing non-quantitative in side crystal, and crystal is needle-like, threadiness or fiber collection shape.Attapulgite has unique dispersion, high temperature resistant, anti-good colloidal nature and the higher adsorption bleaching ability such as saline and alkaline.And there is certain plasticity and cohesive force, water imbibition is strong, tool viscosity and plasticity time wet, and dry after-contraction is little, and not quite aobvious crackle, water soaking collapses loose, and suspension meets dielectric not flocculation sediment.Therefore attapulgite is widely used in the numerous areas such as sewage disposal, adsorption cleaning, washing agent, rubber, coating, papermaking, light industry, agricultural, cosmetics, is a kind of important nonmetallic minerals, the part but attapulgite also comes with some shortcomings.

In order to improve the result of use of attapulgite further, strengthening the physical and chemical performance of its entirety, usually before use modification being carried out to it, improve the dispersive property of attapulgite, gel viscosity, colloidity, rheological property.And along with the development of industrial technology, also need some other performances improving attapulgite, as performances such as antibiotic property, thixotropy, lubricity, viscosity, suspension, adsorptivities, to meet the needs of different field development.

Summary of the invention

The object of the present invention is to provide a kind of attapulgite modified and preparation method thereof for the treatment of containing heavy metal containing sewage, this attapulgite flocculating effect is good, and have good absorption and sequestering power to heavy metal ion such as the copper in water, clearance can reach 75%.

Technical scheme of the present invention is as follows:

A kind of attapulgite modified for the treatment of containing heavy metal containing sewage, is characterized in that being made up of the raw material of following weight portion: acrylate 2-3, the potassium peroxydisulfate 0.1-0.2 of ester gum 2-3, di-iron trioxide 3-5, sodium acetate 2-3, sodium carboxymethylcellulose 0.3-0.5, hydroxyl ketal ester, hydrogen peroxidase 10 .4-0.7, cocounut oil acyl diethanol amine 0.2-0.3, shitosan 2-3, propoxylation trimethylolpropane triacrylate 2-3, acrylamide 3-5, neopentyl glycol 3-5, attapulgite 100-120, water are appropriate, auxiliary agent 5-10,8-10% hydrochloric acid solution 30-40;

Described auxiliary agent is made up of the raw material of following weight portion: nano-calcium carbonate 4-5, agilawood essential oil 0.1-0.2, amino resins 0.2-0.3, Hydroxylated acrylic resin 0.4-0.5, terminal carboxyl polyester resin 0.3-0.4, alchlor 3-4, nano zeolite powder 1-2, silicone oil 0.1-0.2, molybdenum bisuphide 0.3-0.5, strontium carbonate 0.1-0.2, boron nitride 0.1-0.2, winnofil 1-2, cellulose diacetate 0.1-0.2, bamboo fibre 2-3; Preparation method is: by nano-calcium carbonate, winnofil, nano zeolite powder, molybdenum bisuphide, strontium carbonate, boron nitride, cellulose diacetate, bamboo fibre mixed grinding evenly, obtain mixed-powder; Again by other residual components mixing and stirring, with gained powder mixed grinding 20-30 minute, then be heated to 60-70 DEG C, griding reaction 30-40 minute, to obtain final product.

Described for the treatment of the attapulgite modified preparation method containing heavy metal containing sewage, it is characterized in that comprising the following steps:

(1) attapulgite is sent into calcining furnace, at 300-400 DEG C, calcine 3-4 hour, take out and pulverize, cross 20 mesh sieves, add in the water of 340-360 weight portion, under 100-200 rev/min, stir 10-12 hour, obtain attapulgite suspension, add 8-10% hydrochloric acid solution, be heated to 50-60 DEG C, stir 1-2 hour, then add di-iron trioxide continuation stirring 1-2 hour while stirring, filter, being washed to pH value is 6-8, refilter, dry, obtain activation attapulgite powder;

(2) other residual components are added in residue water, stir, obtain slurry;

(3) hot-air blowing 50-60 DEG C to attapulgite powder makes it seethe, then in the powder seethed, spray into the slurry that (2) vaporific step obtains, and make the two fully after mixing, maintenance temperature is 50-60 DEG C, continues to seethe 30-40 minute;

(4) mixed material (3) step obtained is dried, and grinds to form the particle of 5-80 μm, to obtain final product.

Beneficial effect of the present invention

Attapulgite of the present invention is modified by using di-iron trioxide, shitosan, acrylamide, and flocculating effect is good, and have good absorption and sequestering power to heavy metal ion such as the copper in water, clearance can reach 75%; Reacted by organic polymer, easy disintegrating is not defeated and dispersed to make attapulgite, and consumption matters, does not affect its absorption property.

Detailed description of the invention

A kind of for the treatment of containing the attapulgite modified of heavy metal containing sewage, be made up of the raw material of following weight portion (kilogram): the acrylate 2.4 of ester gum 2.5, di-iron trioxide 4, sodium acetate 2.5, sodium carboxymethylcellulose 0.4, hydroxyl ketal ester, potassium peroxydisulfate 0.1, hydrogen peroxidase 10 .6, cocounut oil acyl diethanol amine 0.2, shitosan 2.5, propoxylation trimethylolpropane triacrylate 2.5, acrylamide 4, neopentyl glycol 4, attapulgite 110, water are appropriate, auxiliary agent 8,9% hydrochloric acid solution 35;

Described auxiliary agent is made up of the raw material of following weight portion (kilogram): nano-calcium carbonate 4.5, agilawood essential oil 0.1, amino resins 0.2, Hydroxylated acrylic resin 0.5, terminal carboxyl polyester resin 0.3, alchlor 3.5, nano zeolite powder 1.5, silicone oil 0.1, molybdenum bisuphide 0.4, strontium carbonate 0.2, boron nitride 0.1, winnofil 1.5, cellulose diacetate 0.1, bamboo fibre 2.5; Preparation method is: by nano-calcium carbonate, winnofil, nano zeolite powder, molybdenum bisuphide, strontium carbonate, boron nitride, cellulose diacetate, bamboo fibre mixed grinding evenly, obtain mixed-powder; Again by other residual components mixing and stirring, with gained powder mixed grinding 25 minutes, then be heated to 65 DEG C, griding reaction 35 minutes, to obtain final product.

Described for the treatment of the attapulgite modified preparation method containing heavy metal containing sewage, comprise the following steps:

(1) attapulgite is sent into calcining furnace, calcine 3.5 hours at 350 DEG C, take out and pulverize, cross 20 mesh sieves, add in the water of 350 weight portions, stir 11 hours under 150 revs/min, obtain attapulgite suspension, add 9% hydrochloric acid solution, be heated to 55 DEG C, stir 1.5 hours, then add di-iron trioxide continuation stirring 1.5 hours while stirring, filter, being washed to pH value is 6.5, refilter, dry, obtain activation attapulgite powder;

(2) other residual components are added in residue water, stir, obtain slurry;

(3) hot-air blowing 55 DEG C to attapulgite powder makes it seethe, then in the powder seethed, spray into the slurry that (2) vaporific step obtains, and makes the two fully after mixing, keeps temperature to be 55 DEG C, continue to seethe 35 minutes;

(4) mixed material (3) step obtained is dried, and grinds to form the particle of 5-80 μm, to obtain final product.

Experimental data:

The attapulgite modified specific area of the present embodiment is 276 ㎡/g, is added to the water by 4%, and tested viscosity is 11820.4mPa.s, dissolution time≤6min, degree of discoloring >=26%, is 75% to copper ion clearance.As can be seen from the above data, the excellent adsorption of this attapulgite, heavy metal ion remaval is effective, and thickening property is good.

Claims (2)

1. attapulgite modified for the treatment of containing heavy metal containing sewage, is characterized in that being made up of the raw material of following weight portion: acrylate 2-3, the potassium peroxydisulfate 0.1-0.2 of ester gum 2-3, di-iron trioxide 3-5, sodium acetate 2-3, sodium carboxymethylcellulose 0.3-0.5, hydroxyl ketal ester, hydrogen peroxidase 10 .4-0.7, cocounut oil acyl diethanol amine 0.2-0.3, shitosan 2-3, propoxylation trimethylolpropane triacrylate 2-3, acrylamide 3-5, neopentyl glycol 3-5, attapulgite 100-120, water are appropriate, auxiliary agent 5-10,8-10% hydrochloric acid solution 30-40;

Described auxiliary agent is made up of the raw material of following weight portion: nano-calcium carbonate 4-5, agilawood essential oil 0.1-0.2, amino resins 0.2-0.3, Hydroxylated acrylic resin 0.4-0.5, terminal carboxyl polyester resin 0.3-0.4, alchlor 3-4, nano zeolite powder 1-2, silicone oil 0.1-0.2, molybdenum bisuphide 0.3-0.5, strontium carbonate 0.1-0.2, boron nitride 0.1-0.2, winnofil 1-2, cellulose diacetate 0.1-0.2, bamboo fibre 2-3; Preparation method is: by nano-calcium carbonate, winnofil, nano zeolite powder, molybdenum bisuphide, strontium carbonate, boron nitride, cellulose diacetate, bamboo fibre mixed grinding evenly, obtain mixed-powder; Again by other residual components mixing and stirring, with gained powder mixed grinding 20-30 minute, then be heated to 60-70 DEG C, griding reaction 30-40 minute, to obtain final product.

2. according to claim 1 for the treatment of the attapulgite modified preparation method containing heavy metal containing sewage, it is characterized in that comprising the following steps:

(1) attapulgite is sent into calcining furnace, at 300-400 DEG C, calcine 3-4 hour, take out and pulverize, cross 20 mesh sieves, add in the water of 340-360 weight portion, under 100-200 rev/min, stir 10-12 hour, obtain attapulgite suspension, add 8-10% hydrochloric acid solution, be heated to 50-60 DEG C, stir 1-2 hour, then add di-iron trioxide continuation stirring 1-2 hour while stirring, filter, being washed to pH value is 6-8, refilter, dry, obtain activation attapulgite powder;

(2) other residual components are added in residue water, stir, obtain slurry;

(3) hot-air blowing 50-60 DEG C to attapulgite powder makes it seethe, then in the powder seethed, spray into the slurry that (2) vaporific step obtains, and make the two fully after mixing, maintenance temperature is 50-60 DEG C, continues to seethe 30-40 minute;

(4) mixed material (3) step obtained is dried, and grinds to form the particle of 5-80 μm, to obtain final product.