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Polymeric titanium sulfate-PDMDAAC (poly dimethyl diallyl ammonium chloride) composite coagulant as well as preparation and application methods thereof

A technology of polydimethyldiallyl ammonium chloride and polysulfuric acid is applied in the direction of flocculation/sedimentation water/sewage treatment to achieve the effects of high molecular weight, good flocculation effect and strong practicability

Inactive Publication Date: 2014-08-06
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

After searching, there is no relevant literature report on the polymeric titanium sulfate-polydimethyldiallylammonium chloride inorganic-organic composite flocculant

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  • Polymeric titanium sulfate-PDMDAAC (poly dimethyl diallyl ammonium chloride) composite coagulant as well as preparation and application methods thereof
  • Polymeric titanium sulfate-PDMDAAC (poly dimethyl diallyl ammonium chloride) composite coagulant as well as preparation and application methods thereof
  • Polymeric titanium sulfate-PDMDAAC (poly dimethyl diallyl ammonium chloride) composite coagulant as well as preparation and application methods thereof

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Embodiment

[0026] (1) Weigh 12.5g Ti(SO 4 ) 2 Dissolve in 150mL pure water, add NaOH with a concentration of 240g / L drop by drop under continuous stirring, the dropping volume is 4.34mL, 8.68mL, 13.02mL, 17.36mL, 26.04mL, and the dropping time is controlled at 20-40min , After the dropwise addition was completed, the stirring was continued for 1 h to obtain polymerized titanium sulfate solutions with alkalization degrees (B) of 0.5, 1.0, 1.5, 2.0, and 2.5.

[0027] (2) Divide the polymerized titanium sulfate solutions with different degrees of alkalinity into five parts, add a certain mass of PDMDAAC according to the mass ratio of Ti / PDMDAAC as 10, 8, 6, 4, 0 (for comparison), and continue stirring for 3 hours , filter out the insolubles, and prepare polymeric titanium sulfate-polydimethyldiallylammonium chloride organic polymer composite flocculants with different alkalization degrees and different mass ratios of Ti / PDMDAAC.

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Abstract

The invention discloses a polymeric titanium sulfate-PDMDAAC (poly dimethyl diallyl ammonium chloride) composite coagulant as well as preparation and application methods thereof. The preparation method comprises the following steps: 1, preparing a titanium sulfate solution with certain concentration by adding water, placing the titanium sulfate solution in a mixing kettle, dropwise adding a sodium hydroxide solution by controlling certain speed, performing polymerization reaction, stopping adding the materials when the basicity (B) is 0.5-2.5, and continuously stirring for 0.5-1.5h after finishing adding, so as to prepare a colorless and transparent polymeric titanium sulfate solution; 2, placing the prepared polymeric titanium sulfate solution in a mixing reaction kettle, matching according to the fact that the mass ratio of Ti to PDMDAAC is (4-10):1, adding branched-chain PDMDAAC colloid or dry powder under the normal temperature or heating condition; 3, stirring the mixed solution at the normal temperature for 2-4 h, and filtering away insoluble substances, so as to obtain the polymeric titanium sulfate-PDMDAAC inorganic composite coagulant and polymeric titanium sulfate-PDMDAAC organic composite coagulant. The polymeric titanium sulfate-PDMDAAC composite coagulant can be widely applied to fields such as water supply, waste water treatment, papermaking, textile dyeing and printing, and daily-use chemical industry, and has good water treatment effect.

Description

technical field [0001] The invention relates to a composite preparation technology of an inorganic polymer and an organic cationic polymer, that is, a polymerized titanium sulfate-polydimethyldiallylammonium chloride inorganic-organic composite coagulant and its preparation and application method. The invention belongs to the field of environmental chemical industry and environmental protection technology. Background technique [0002] In recent years, titanium salt has received widespread attention as a new type of water treatment agent. Titanium is known as a "biophilic metal" in medicine. It is safe and non-toxic to the human body. As a water treatment agent, it can effectively reduce the turbidity of the effluent and remove organic pollutants in the water. The flocs formed are large and dense, and the sedimentation speed is fast. And the coagulation effect under low temperature conditions is obviously better than that of traditional aluminum salt and iron salt coagulants...

Claims

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Application Information

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IPC IPC(8): C02F1/52
Inventor 高梦鸿高乃云肖雨亮李晓燕
Owner TONGJI UNIV
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