Polyaluminum silicate-acrylamide copolymer composite flocculant and preparation method thereof

A technology of acrylamide copolymerization and polyaluminum iron silicate, applied in the direction of flocculation/sedimentation water/sewage treatment, etc., can solve the problems of secondary pollution, improvement of water treatment effect, etc., achieve cost saving, strong coagulation ability, and low consumption Effect
CN105152291BInactive Publication Date: 2017-09-22CHENGDU UNIVERSITY OF TECHNOLOGY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHENGDU UNIVERSITY OF TECHNOLOGY
Publication Date
2017-09-22
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a polyaluminum silicate iron-acrylamide copolymer composite flocculant and a preparation method thereof, which is characterized in that 20 parts of Na2SiO3 are added to 250 parts of deionized water, the pH value is 2 to 5, and the reaction is carried out at room temperature for 2 to 3 hours. Prepare activated silicic acid; use aluminum-containing waste, iron-containing waste hydrochloric acid and industrial hydrochloric acid to obtain mixed crystals of AlCl3 and FeCl2; add 1.2 to 25.0 parts of mixed crystals to 25 parts of activated silicic acid, react, stand and mature, and obtain poly Aluminum iron silicate PAFSI; add 20 parts of acrylamide, 75-450 parts of deionized water, 5-20 parts of ionic monomer, and 0.3-6 parts of macromonomer into the reaction bottle, stir, pH value 5-9, pass N2 , add 0.008-0.4 parts of potassium persulfate at 40-70°C, react for 12-36 hours, and prepare the copolymer PAME; add 100 parts of 5 g / L PAME solution into the reaction bottle, and add 12-350 parts under rapid stirring 100 g / L PAFSI solution, pH value 1-4, react at 30-40°C for 2-3 hours, then react at 50-75°C for 2-4 hours, and mature for 24 hours to prepare PAFSI-PAME composite flocculant.
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Description

1. Technical field

[0001] The invention relates to a polyaluminum silicate-acrylamide copolymer composite flocculant and a preparation method thereof. The flocculant can be used for oil and gas field fracturing flowback fluid, oil and gas field produced water, printing and dyeing, papermaking, textile, steel, brewing, The water treatment of petrochemical, metallurgical and food waste water belongs to the fields of environmental engineering, inorganic chemistry, polymer materials and oilfield chemistry. 2. Technical Background

[0002] my country's water resources are short, especially in the northwest region, and all walks of life have serious water pollution due to economic development. Therefore, the protection of water resources and wastewater treatment are major issues of environmental protection in our country. In the process of wastewater treatment, it is divided into primary, secondary and tertiary treatment according to the degree of treatment. The primary treatment ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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