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A kind of preparation method and application of polyaluminum titanium sulfate

A technology of polyaluminum sulfate and aluminum sulfate, which is applied in chemical instruments and methods, flocculation/precipitation water/sewage treatment, process wastewater treatment, etc. It can solve the problems of ineffective sewage treatment, large dosage of chemicals, and threats to human health. and other problems, to achieve the effect of improving the coagulation effect, strong adsorption and bridging ability, and good coagulation effect

Active Publication Date: 2020-08-28
HUNAN UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The present invention aims at that when the existing aluminum sulfate (SA) inorganic coagulant is used as a sewage treatment agent, the dosage of the agent is large, the effect of sewage treatment is not obvious, and the flocs produced are relatively fragile, and are easily broken and settled when the water body is disturbed. To deal with problems such as low speed and great threat of residual aluminum to human health, provide a polyaluminum titanium sulfate (PTAS) inorganic composite polymer coagulant and its preparation and application, and prepare inorganic composite polymers with good coagulation effect coagulant

Method used

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  • A kind of preparation method and application of polyaluminum titanium sulfate
  • A kind of preparation method and application of polyaluminum titanium sulfate
  • A kind of preparation method and application of polyaluminum titanium sulfate

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preparation example Construction

[0024] A kind of preparation method of polyaluminum titanium sulfate, it is the following steps:

[0025] (1) Weigh a certain quality of aluminum sulfate and add deionized water to fully stir and dissolve to obtain a colorless and transparent solution. Dissolve to obtain a colorless and transparent solution, and control the concentration of the titanium sulfate solution to 0.001-0.01mol / L;

[0026] (2) According to the molar ratio of Ti / Al being 0.1 to 0.6, mix the aluminum sulfate and titanium sulfate solution obtained in step (1), stir in a constant temperature water bath for 1 to 2 hours, and keep the constant temperature at 30-80°C to obtain an aluminum titanium sulfate solution ;

[0027] (3) According to the molar ratio of n(OH) / n(Al+Ti) being 0.1 to 1.0, add sodium hydroxide (NaOH) solution or sodium carbonate (Na 2 CO 3 ) solution, after the dropwise addition, the constant temperature water bath continued to stir for 1 to 2 hours, and the constant temperature was 30...

Embodiment 1

[0034] (1) Weigh 3.3321g of aluminum sulfate (SA) white crystals and dissolve it in about 20mL of deionized water, stir well to dissolve it to obtain a colorless and transparent aluminum sulfate (SA) solution.

[0035] (2) Weigh 0.9600g of titanium sulfate (ST) white crystals and dissolve it in about 20mL of deionized water, stir well to dissolve it to obtain a colorless and transparent titanium sulfate (ST) solution.

[0036] (3) Mix the solutions in (1) and (2) according to the molar ratio of Ti / Al to 0.4, and then place them in a constant temperature water bath at 60°C and stir for 1.0 h to obtain titanium aluminum sulfate with a molar ratio of Ti / Al of 0.4 solution (SAT).

[0037] (4) According to the molar ratio of n(OH) / n(Al+Ti) being 0.3, adding sodium hydroxide (NaOH) or sodium carbonate (NaOH) with a concentration of 1mol / L to the mixed solution in (3) dropwise 2 CO 3 ) solution, after the dropwise addition, the 60°C constant temperature water bath continued to stir...

Embodiment 2

[0040] A kind of preparation method of polyaluminum titanium sulfate, it is the following steps:

[0041] (1) Take a certain quality of aluminum sulfate and add deionized water to fully stir and dissolve to obtain an aluminum sulfate solution with a concentration of 0.03mol / L. Take a certain quality of titanium sulfate and add deionized water to fully stir and dissolve to obtain a concentration of 0.004mol / L Titanium sulfate solution;

[0042] (2) According to the molar ratio of Ti / Al being 0.35, the aluminum sulfate and titanium sulfate solution obtained in step (1) were mixed, stirred in a constant temperature water bath for 1.5 hours, and the constant temperature was 60° C. to obtain an aluminum titanium sulfate solution;

[0043] (3) According to the molar ratio of n(OH) / n(Al+Ti) being 0.4, sodium hydroxide (NaOH) or sodium carbonate (NaOH) or sodium carbonate (Na 2 CO 3 ) solution, after the dropwise addition, the constant temperature water bath continued to stir for 1....

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Abstract

The invention discloses a preparation method for polymerized aluminum titanium sulfate and an application. The method comprises the following steps: mixing an aluminum sulfate solution in concentration of 0.01-0.05mol / L with a titanous sulfate solution in concentration of 0.001-0.01mol / L in a Ti / Al mole ratio of (0.1-0.6):1 and stirring in thermostatic water bath, thereby acquiring a mixed solution of titanous sulfate and aluminum sulfate; mixing the mixed solution of titanous sulfate and aluminum sulfate in a mole ratio of n(OH) / n(Al+Ti) and stirring in thermostatic water bath, thereby acquiring an inorganic compound macromolecule coagulant of polymerized aluminum titanium sulfate, wherein the mole ratio of n(OH) / n(Al+Ti) of the inorganic compound macromolecule coagulant of polymerized aluminum titanium sulfate (PTAS) is 0.1-1.0; adding 1mol / L sodium hydroxide or sodium carbonate, stirring in thermostatic water bath and then curing, thereby acquiring the polymerized aluminum titanium sulfate. The inorganic compound macromolecule coagulant prepared according to the invention has an excellent coagulating effect, simple technology, low cost, less dosage and wide application.

Description

technical field [0001] The invention relates to a preparation method and application of polymerized aluminum titanium sulfate, belonging to the technical field of water treatment. Background technique [0002] With the rapid development of industry and agriculture, the population has increased rapidly, the water resources that human beings depend on are becoming increasingly scarce, the water resource crisis is becoming more and more serious, water pollution and water shortage have become important factors restricting economic development. In order to save water resources, improve water utilization, reduce and eliminate the harm caused by water pollution to human beings and the environment, water treatment must be strengthened. Coagulation technology is the most commonly used treatment technology unit in water pollution control, water purification treatment, sewage (waste) water advanced treatment and reuse, and sludge dehydration treatment technology. The behavior and effe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/52
CPCC02F1/5245C02F1/66C02F2103/28
Inventor 张鹏王雨露张艳君廖为雄赵冬琴
Owner HUNAN UNIV OF SCI & TECH
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