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Polymeric silicic acid-polyferric sulfate titanium inorganic macromolecular composite flocculant and preparation method and application thereof

A composite flocculant and inorganic polymer technology, applied in the field of environment and chemistry, can solve the problems of effluent pH drop, affecting effluent treatment and subsequent utilization, etc., achieving strong adsorption and bridging ability, good bridging net capture and complexation. , the effect of convenient subsequent processing

Active Publication Date: 2013-10-09
SHANDONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the titanium sulfate 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

Method used

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  • Polymeric silicic acid-polyferric sulfate titanium inorganic macromolecular composite flocculant and preparation method and application thereof

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Embodiment

[0026] (1) Weigh 7.4039g Na 2 SiO 3 9H 2 The O solid is dissolved in about 30 mL of water, and it is added dropwise to 0.25 mol concentration of dilute sulfuric acid, and the pH is always adjusted to be less than 2 with 0.5 mol / L dilute sulfuric acid, and the final pH is controlled to be 1.5. 250mL, 0.1042mol / L (as SiO 2 meter) polymeric silicic acid solution;

[0027] (2) Weigh four parts of Ti(SO 4 ) 2 Solids, 12.5g each, were dissolved in about 150mL of water and stirred until the solution was colorless and transparent, and the NaOH solution with a concentration of 10wt% was added dropwise at a rate of 0.3ml / min until the alkalization degrees were 0.5, 1.0, 1.5, 0.0 (for comparison), after the dropwise addition, continue to stir for 1 hour until the solution is colorless and transparent, to obtain a polymerized titanium sulfate solution;

[0028] (3) Divide the polymeric titanium sulfate solutions with different degrees of alkalization into five parts, and add them to...

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Abstract

The invention relates to a polymeric silicic acid-polyferric sulfate titanium inorganic macromolecular composite flocculant and a preparation method and an application thereof. The alkalinity (B) of the composite flocculant is 0.5-1.5, and the composite flocculant is prepared by mixing a polymeric silicic acid solution with concentration of 0.08-0.12 mol / L with a polyferric sulfate titanium solution with concentration of 8-15 g / L according to a Si / Ti mol ratio of (0.02-0.1):1. The composite flocculant has the advantages of strong adsorption bridging ability on colloid matters, good flocculation effect, wide application range, less sludge generation amount and the like, thereby being capable of being extensively applied in such fields as water supply, waste water treatment, papermaking, textile dyeing and finishing and daily-use chemical industry, and the water treatment effect is good.

Description

(1) Technical field [0001] The invention relates to polysilicic acid polytitanium sulfate inorganic polymer composite flocculant (PTSS) and its preparation method and application, belonging to the field of environment and chemical technology. (2) Background technology [0002] The coagulation-sedimentation method is widely used in water and wastewater treatment because of its simple process, cost-effectiveness, and convenient operation. The development of new and efficient water treatment chemicals is one of the most important links in the research of coagulation treatment process. Composite inorganic polymer polysilicate metal salt coagulant has become a research hotspot in recent years because of its high flocculation efficiency, wide pH range, low cost, and simple synthesis process. At present, the research on polymeric aluminum silicate, polymeric iron silicate, polymeric aluminum iron silicate and other composite flocculants has achieved rapid development. However, th...

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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