Cationic composite flocculating agent and preparation method thereof

A composite flocculant, cationic technology, applied in the direction of flocculation/sedimentation water/sewage treatment, etc., can solve the problems of difficult price reduction of residues, slow flocculation speed, and large dosage of drugs, and achieves easy molecular weight, less sludge, and molecular weight. high effect

Inactive Publication Date: 2012-06-06
GUANGZHOU YINGTIAN CHEM & MATERIALS +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Inorganic flocculants have the disadvantages of slow flocculation speed and large dosage, while organic flocculants have the disadvantages of high price and difficult price reduction of residues

Method used

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  • Cationic composite flocculating agent and preparation method thereof
  • Cationic composite flocculating agent and preparation method thereof
  • Cationic composite flocculating agent and preparation method thereof

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Embodiment Construction

[0019] In order to make the present invention easier to understand, the present invention will be further described below in conjunction with specific examples. It should be understood that these examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention. The specific experimental methods not mentioned in the following examples are generally carried out according to conventional experimental methods.

[0020] The first step of the preparation method example of a cationic composite flocculant provided by the present invention is as follows:

[0021] (1), the FeSO 4 ·7H 2 O and tap water are stirred and dissolved in the reactor according to the mass ratio of 3:1, and the FeSO 4 ·7H 2 The concentrated sulfuric acid (concentration is 98%) of O and technical grade is to add described concentrated sulfuric acid according to mass ratio as 100:6, then described FeSO 4 ·7H 2 O and industrial grade NaClO 3 (99.5% con...

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Abstract

The invention provides a cationic composite flocculating agent and a preparation method thereof. The method comprises steps of (1) preparing a polymerized iron sulfate solution; (2) preparing slaked poly dimethyl diallyl ammonium chloride; (3) mixing the slaked poly dimethyl diallyl ammonium chloride and the polymerized iron sulfate solution in a mass ratio of 5-10:100, stirring and dissolving in a reaction kettle; carrying out polymerization under a condition of 30-40 DEG C for 40-60 min to obtain the cationic composite flocculating agent. The novel efficient cationic composite flocculating agent developed by the invention can increase surface charge of ferric salt flocculating agent and reinforce charge neutrality effect, thereby enhancing flocculation capability of polymerized iron sulfate, and is an important invention in the field of water treatment medicament. The product of the invention has low cost, no toxicity and environment friendliness, and is suitable for large-scale popularization and usage.

Description

technical field [0001] The invention relates to the field of composite flocculants, in particular to cationic composite flocculants and a preparation method thereof. Background technique [0002] With the progress and development of human society, environmental problems have become the primary problem of human beings. Water treatment chemicals are the most widely used and the largest daily consumption in water treatment fields such as domestic water supply and drainage, industrial water, industrial sewage and reclaimed water reuse. In order to save water resources, improve water utilization, reduce and eliminate the harm caused by sewage to human beings and the environment, research on water treatment chemicals must be strengthened. In the water treatment process, coagulation and sedimentation are one of the most commonly used key technical links. It determines the operating conditions of the subsequent processes. Simplification and running costs. Therefore, the research a...

Claims

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Application Information

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IPC IPC(8): C02F1/52
Inventor 杨光
Owner GUANGZHOU YINGTIAN CHEM & MATERIALS
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