Efficient sewage treatment precipitant and a preparation method thereof

A technology for sewage treatment and precipitant, which is applied in water/sewage treatment, water/sludge/sewage treatment, flocculation/sedimentation water/sewage treatment, etc. It can solve the problems of high synthesis price, low sedimentation efficiency and small flocs. , to achieve the effect of low synthesis price, high precipitation efficiency and low price

Inactive Publication Date: 2019-01-04
浙江德清金开水务有限公司
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  • Abstract
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Problems solved by technology

[0003] Therefore, the existing precipitants for sewage treatment have the problems of small flocs, large dosage, toxicity, high synthesis price and low sedimentation efficiency.

Method used

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Examples

Experimental program
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Embodiment 1

[0015] Embodiment 1: Precipitating agent for efficient sewage treatment, described precipitating agent comprises polydimethyl diallyl ammonium chloride, sodium hydroxyethyl cellulose aqueous solution, sodium silicate aqueous solution, wherein, sodium carboxyethyl cellulose and The mass ratio of sodium silicate is 1:9, and the mass ratio of polydimethyldiallylammonium chloride to hydroxyethyl cellulose sodium is 1:1.8. The dissolving ratio of the sodium silicate to water is 1:45. The dissolving ratio of described sodium carboxyethyl cellulose and water is 1:75.

Embodiment 2

[0016] Embodiment 2: the preparation method of high-efficiency sewage treatment precipitating agent, comprises the following steps, after polydimethyldiallyl ammonium chloride and carboxyethyl cellulose sodium aqueous solution are mixed, be 18 ℃ with constant temperature water bath bed Stir and heat under the conditions for 2.5h, then add sodium silicate aqueous solution, and stir at room temperature for 1h to obtain a precipitant.

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Abstract

The invention relates to the technical field of sewage treatment, and particularly discloses an efficient sewage treatment precipitant and a preparation method thereof. The precipitant is prepared from poly(diallyldimethylammonium chloride), a sodium hydroxyethyl cellulose aqueous solution and a sodium silicate aqueous solution, wherein the mass ratio of sodium hydroxyethyl cellulose to sodium silicate is 1:8-1:10, and the mass ratio of poly(diallyldimethylammonium chloride) to sodium hydroxyethyl cellulose is 1:1.7-1:2. The precipitant has the characteristics of larger flocs, lower dosage, notoxicity, lower synthesis price and higher precipitation efficiency.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a precipitant for high-efficiency sewage treatment and a preparation method thereof. Background technique [0002] Generally speaking, in terms of floc size, compactness, settling velocity and final flocculation effect, inorganic low-molecular and high-molecular-weight flocculants are not as good as inorganic-organic high-molecular composite flocculants, and the dosage of the former is also significantly more than the latter. Anionic organic polymer flocculants cannot provide neutralization for negatively charged colloidal particles, and the effect is very poor when used alone as a flocculant. Inorganic flocculants have strong practicability for water treatment of various complex components, and can effectively remove micro-nano particles, but the flocs formed are small and the dosage is large. The amount of organic flocculants is small, the flocculation speed is fast,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/56C02F1/52
CPCC02F1/56C02F1/5236
Inventor 盛少行张险峰谢水良杨甬强
Owner 浙江德清金开水务有限公司
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