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Method for preparing polymeric silicic acid polymeric titanium chloride inorganic polymer composite flocculant through copolymerization method

An inorganic polymer and composite flocculant technology, applied in the field of environment and chemistry, can solve the problems of effluent pH drop, short storage time, affecting effluent treatment and subsequent utilization, etc., to improve effluent pH, enhance storage time, and avoid stability Reduced effect

Active Publication Date: 2015-06-10
SHANDONG UNIV
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Problems solved by technology

However, the titanium solution itself is highly acidic, and a large amount of H is released during hydrolysis. + , leading to a significant drop in the pH of the effluent after coagulation, seriously affecting the further treatment and subsequent utilization of the effluent
And titanium salt is very easy to hydrolyze, when the concentration is low, the storage time is short

Method used

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  • Method for preparing polymeric silicic acid polymeric titanium chloride inorganic polymer composite flocculant through copolymerization method
  • Method for preparing polymeric silicic acid polymeric titanium chloride inorganic polymer composite flocculant through copolymerization method
  • Method for preparing polymeric silicic acid polymeric titanium chloride inorganic polymer composite flocculant through copolymerization method

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Embodiment

[0033] (1) Weigh 13.6692g Na 2 SiO 3 9H 2 Dissolve the O solid in about 0 mL of water, add it dropwise to 0.5 mol concentration of dilute hydrochloric acid, adjust the pH to always be less than 2 with 0.5 mol / L dilute hydrochloric acid, and control the final pH to 1.5, and after aging for 2 hours, set the volume to 250mL, get 0.192375mol / L (as SiO 2 meter) of polymeric silicic acid solution;

[0034] (2) Measure four parts of 20% titanium tetrachloride solution, each part is 20mL, place them in a magnetic stirrer and stir respectively, and add the prepared fresh poly Silicic acid solution, stirred for 0.5h.

[0035] (3) Divide the mixed solution of different Si / Ti in step (2) into four parts, add the NaOH solution with a concentration of 10wt% dropwise at a rate of 0.3ml / min until the degree of alkalinity is 0.5, 1.0, 1.5 , 0.0 (for comparison), after the dropwise addition, continue to stir for 1h until the solution is colorless and transparent, and the polymeric silicic ...

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Abstract

The invention relates to a method for preparing a polymeric silicic acid polymeric titanium chloride inorganic polymer composite flocculant through a copolymerization method. The polymeric silicic acid polymeric titanium chloride inorganic polymer composite flocculant is prepared and obtained under the condition that chloride ions exist. The polymeric silicic acid polymeric titanium chloride inorganic polymer composite flocculant is prepared in the mode that titanium tetrachloride and sodium silicate serve as raw materials, and a titanium tetrachloride solution and polymeric silicic acid are o-polymerized. The method has the advantages that titanium tetrachloride serves as one of the raw materials, the chloride ions are introduced in the preparation process, excessive sulfate ions are avoided, product hydrolysis is avoided, product stability is improved under the high titanium ion concentration, the turbidity and the organic matter removal rate are high under the same dosing quantity, medicine stability is obviously enhanced, the adsorption bridging capacity for colloidal matter is high, the flocculation effect is good, the application range is wide, an outflow water pH value is close to the neutral value, and follow-up treatment is convenient.

Description

technical field [0001] The invention relates to a method for preparing polysilicic acid polytitanium chloride inorganic macromolecule composite flocculant by copolymerization, which belongs to the technical field of environment and chemistry. Background technique [0002] Coagulation-flocculation-sedimentation method has become a commonly used treatment process in water and wastewater treatment because of its simple operation, cost-effectiveness and high efficiency. Coagulant (flocculant) is an important factor to determine the coagulation effect. At present, the commonly used coagulants mainly include inorganic coagulants, organic coagulants, inorganic-organic polymer composite / compound coagulants and so on. Looking at the development direction of coagulants, it is basically from low molecular weight to high molecular weight, from single type to composite type. At present, most of the newly developed high-efficiency coagulants are a new high-molecular-weight polymer produ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/52
Inventor 高宝玉黄鑫岳钦艳王燕李倩
Owner SHANDONG UNIV
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