Spheroidal composite adsorbent for sewage treatment
A composite adsorption and sewage treatment technology, applied in water/sewage treatment, adsorption water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of poor heavy metal adsorption capacity, single function, slow sedimentation rate, etc., to achieve Improve chelation adsorption capacity, increase sedimentation rate, and prevent secondary pollution
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Embodiment 1
[0038] A spherical composite adsorbent for sewage treatment, which is prepared from the following raw materials in parts by weight: 8 parts of lignin, 6 parts of mercapto-modified polyacrylamide, 2 parts of sodium alginate, and 30 parts of mercapto-modified quartz sand With 30 parts of sepiolite, its concrete preparation steps are as follows:
[0039] 1) dissolving the lignin in the above parts by weight in deionized water to prepare a lignin solution with a concentration of 15% by mass;
[0040] 2) Mix and stir the mercapto-modified polyacrylamide aqueous solution and the sodium alginate aqueous solution evenly, raise the temperature to 50° C. for 1 hour, and then cool to room temperature;
[0041] 3) Mix and stir the solutions in step 1) and step 2) evenly to obtain a mixed solution A, add a mixture of sepiolite and mercapto-modified quartz sand to the mixed solution A, stir evenly, and obtain a semi-solid mixed product;
[0042] 4) Extrude the semi-solid mixed product of ste...
Embodiment 2
[0055] A spherical composite adsorbent for sewage treatment is prepared from the following raw materials in parts by weight: 9 parts of lignin, 7.5 parts of mercapto-modified polyacrylamide, 2.5 parts of sodium alginate, 35 parts of mercapto-modified quartz and 25 parts of sepiolite, the specific preparation steps are as follows:
[0056] 1) dissolving the lignin in the above parts by weight in deionized water to form a lignin solution with a concentration of 18% by mass;
[0057] 2) Mix and stir the mercapto-modified polyacrylamide aqueous solution and the sodium alginate aqueous solution evenly, raise the temperature to 50° C. for 2 hours, and then cool to room temperature;
[0058] 3) Mix and stir the solutions in step 1) and step 2) evenly to obtain a mixed solution A, add a mixture of sepiolite and modified quartz sand to the mixed solution A, stir evenly, and obtain a semi-solid mixed product;
[0059] 4) Extrude the semi-solid mixed product of step 3) to produce spheri...
Embodiment 3
[0073] A spherical composite adsorbent for sewage treatment, which is prepared from the following raw materials in parts by weight: 10 parts of lignin, 9 parts of mercapto-modified polyacrylamide, 3 parts of sodium alginate, and 40 parts of mercapto-modified quartz sand With 20 parts of sepiolite, the concrete preparation steps are as follows:
[0074] 1) dissolving the lignin in the above parts by weight in deionized water to prepare a lignin solution with a concentration of 20% by mass;
[0075] 2) Mix and stir the mercapto-modified polyacrylamide aqueous solution and the sodium alginate aqueous solution evenly, raise the temperature to 80° C. for 1 hour, and then cool to room temperature;
[0076] 3) Mix and stir the solutions in step 1) and step 2) evenly to obtain a mixed solution A, add a mixture of sepiolite and mercapto-modified quartz sand to the mixed solution A, stir evenly, and obtain a semi-solid mixed product;
[0077] 4) Extrude the semi-solid mixed product of ...
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