High-purity high-basicity nanoscale PACS flocculating agent and preparation method thereof

A nano-scale flocculant technology, which is applied in the field of high-purity and high-salinity nano-scale PACS flocculant and its preparation, and PACS flocculant for water purification, which can solve the problem of molecular weight drop, influence on colloidal chemical electrical neutralization, and alkalization It can achieve the effect of good polymerization degree, high basicity degree and improved application prospect
CN106517463AActive Publication Date: 2017-03-22广西继禹环保科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
广西继禹环保科技有限公司
Publication Date
2017-03-22

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Abstract

The invention relates to a preparation method of a high-purity high-basicity nanoscale PACS flocculating agent. The method comprises the following steps: (1) generating a first-stage PAC material; (2) generating a second-stage high-purity PAC material; (3) performing primary separation on the materials; (4) performing secondary separation on the materials. The PACS flocculating agent prepared by the preparation method has a nanoscale crystal structural form, and the hydroxyl polymerization degree and basicity are increased remarkably, so that the organic high molecular weight is increased, and a very good water purifying effect is achieved.
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Description

technical field

[0001] The invention belongs to the technical field of water environmental protection, and relates to a PACS flocculant for water purification, in particular to a high-purity and high-basicity nano-scale PACS flocculant and a preparation method thereof. Background technique

[0002] PACS products are high-efficiency composite products that introduce sulfate ions into high-purity polyaluminum chloride. Its existing production method is to heat and pressurize in the reactor, and will contain Al 2 o 3 About 64% of the aluminum hydroxide gel is dissolved in the reaction kettle with hydrochloric acid lower than the aluminum equivalent under the condition of heating and pressure, and the clear and translucent polyaluminum chloride liquid is obtained by one-step synthesis after separation. Its response is:

[0003] Al(OH) 3 +HCl→Al(OH) 2 Cl+H 2 o

[0004] 2Al(OH) 2 Cl+HCl→Al 2 (OH) 3 Cl 3 +H 2 o

[0005] Al 2 (OH) 3 Cl 3 →〔Al 2 (OH) n Cl 6-n 〕 M ...

Claims

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