Organic polymer flocculating agent and preparing process thereof

An organic polymer and flocculant technology, which is applied in the direction of flocculation/sedimentation water/sewage treatment, etc., can solve the problems of high treatment cost, large secondary pollution, and blocked pipes, etc., to reduce secondary pollution and input Less, the effect of saving processing costs

Inactive Publication Date: 2005-12-28
岳阳市云溪区泉井有机合成厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The above-mentioned types of cationic organic polymer flocculants must be prepared with inorganic substances in the process of treating oily wastewater in order to obtain better results. The addition of inorganic substances has brought problems of equipment corrosion and pipeline blockage; the addition amount is 15mg / L Only when the above conditions are suitable can the effect be achieved, the addition amount is large, the scum produced is large, the "three mud" treatment costs are high, and the secondary pollution is large, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Add 500 kg of dimethyldiallylamine chloride, 500 kg of acrylamide, and 100 kg of acrylic acid into the reaction kettle, use ammonium persulfate as the initiator, and react for 3 hours at a temperature of 70°C to obtain polymer A ;

[0023] Add 300 kg of dimethyl diallyl ammonium chloride, 700 kg of acrylamide, and 200 kg of diethyl diallyl ammonium chloride in another reaction kettle, and use ammonium persulfate as the initiator. Under the temperature, polymer B was obtained by reacting for 4.5 hours;

[0024] 1,000 kg of polymer A and 1,000 kg of polymer B were mixed, and then 200 kg of polydimethyldiallylamine chloride was added, and compounded at a temperature of 30° C. to obtain an organic polymer flocculant with a molecular weight of 2,500,000.

[0025] The organic macromolecule flocculant is applied to the treatment of oily wastewater, and its addition amount is 10 mg / L, and the oil removal rate reaches 97%.

Embodiment 2～8

[0027] The operation steps are the same as in Example 1. The addition amount of the reactant, the type of initiator, the reaction temperature, the reaction time, and the molecular weight of the product are shown in Table 1, Table 2, and Table 3 respectively.

[0028]

[0029]

[0030]

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PUM

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Abstract

The invention discloses an organic polymer flocculant and a preparation method thereof. The organic polymer flocculant is formed from dimethyl diallyl ammonium chloride, acrylamide, acrylic acid and diethyl diallyl ammonium chloride The polymer is compounded with polydimethyldiallylamine chloride. This product produces flocs quickly in the treatment of oily wastewater, and has high water quality transparency; less input, and the generated scum is black and dense, with less amount and high removal rate, which can save a lot of "three mud" treatment fees and reduce secondary pollution; There is no need to prepare inorganic substances, the pH of the water is 6-7, it does not corrode equipment and block pipelines, and can greatly reduce the number of equipment maintenance; the preparation process of the product is simple, the operation is safe, the product is stable, and it is not a dangerous chemical, so it is very safe.

Description

technical field [0001] The invention relates to an organic polymer flocculant and a preparation method thereof. Background technique [0002] In the past ten years, due to the change of crude oil materials and the increase of crude oil processing depth, the water quality of refinery sewage has been deteriorating day by day, and the situation of sewage treatment has become increasingly severe. It is imperative to improve the effect of current sewage treatment. Since the wastewater discharged from petroleum refining mainly contains dispersed oil and emulsified oil, certain additives are often added in the process of using oil or processing oil, and surfactants such as cleaning agents and emulsifiers are also contained in oily wastewater , the existence of these additives brings certain difficulties to the treatment of oily wastewater. There is an electric double layer on the surface of the emulsified oil or it is protected by the emulsifier and exists in a stable state for a ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/56
Inventor 乔异生
Owner 岳阳市云溪区泉井有机合成厂
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