Composite flocculant for municipal sewage treatment and use method thereof
A composite flocculant and urban sewage technology, applied in the field of composite flocculants for urban sewage treatment, can solve the problems of poor biodegradability, removal of heavy metal ions, secondary pollution, etc., and achieve the effect of enhanced adsorption performance and good adsorption effect
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Embodiment 1
[0024] A composite flocculant for urban sewage treatment, the composition of the composite flocculant includes the following raw materials in parts by weight: 12.5 parts of kaolin powder, 20 parts of hydroxyethyl cellulose, 5 parts of sodium hypochlorite, 12.5 parts of lignosulfonate, 1 part of ammonium sulfate, 15 parts of acrylamide, 10 parts of polyaluminum chloride, 1 part of ammonium thiosulfate, 32.5 parts of dilute hydrochloric acid, and 165 parts of deionized water.
[0025] The preparation method of the composite flocculant for urban sewage treatment comprises the following steps:
[0026] (1) Weigh the kaolin powder in proportion, add it to the roasting furnace, heat to 800° C., take it out, add the calcined kaolin powder into dilute hydrochloric acid, stir at a speed of 165 r / min for 30 min, and set aside;
[0027] (2) Weigh 1 / 4 of the total mass of hydroxyethyl cellulose, sodium hypochlorite and deionized water in proportion, add them into the reaction vessel toget...
Embodiment 2
[0032] A composite flocculant for urban sewage treatment, the composition of the composite flocculant includes the following raw materials in parts by weight: 10 parts of kaolin powder, 15 parts of hydroxyethyl cellulose, 3 parts of sodium hypochlorite, 10 parts of lignosulfonate, 0.5 parts of ammonium sulfate, 10 parts of acrylamide, 7 parts of polyaluminum chloride, 0.5 parts of sodium hydrosulfide, 30 parts of dilute hydrochloric acid, and 150 parts of deionized water.
[0033] The preparation method of the composite flocculant for urban sewage treatment comprises the following steps:
[0034] (1) Weigh the kaolin powder in proportion, add it to the roasting furnace, heat to 800°C, take it out, add the calcined kaolin powder into dilute hydrochloric acid, stir at a speed of 150r / min for 30min, and set aside;
[0035] (2) Weigh 1 / 4 of the total mass of hydroxyethyl cellulose, sodium hypochlorite and deionized water in proportion, add them into the reaction vessel together, s...
Embodiment 3
[0040] A composite flocculant for urban sewage treatment, the composition of the composite flocculant includes the following raw materials in parts by weight: 15 parts of kaolin powder, 25 parts of hydroxyethyl cellulose, 7 parts of sodium hypochlorite, 15 parts of lignosulfonate, 1.5 parts of ammonium sulfate, 20 parts of acrylamide, 13 parts of polyaluminum chloride, 1.5 parts of sodium hypophosphite, 35 parts of dilute hydrochloric acid, and 180 parts of deionized water.
[0041] The preparation method of the composite flocculant for urban sewage treatment comprises the following steps:
[0042](1) Weigh the kaolin powder in proportion, add it to the roasting furnace, heat to 800°C, take it out, add the calcined kaolin powder into dilute hydrochloric acid, stir at a speed of 180r / min for 30min, and set aside;
[0043] (2) Weigh 1 / 4 of the total mass of hydroxyethyl cellulose, sodium hypochlorite and deionized water in proportion, add them into the reaction vessel together, ...
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