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Flocculating agent for sewage and preparation method thereof

A flocculant and sewage technology, applied in water/sewage treatment, chemical instruments and methods, water/sludge/sewage treatment, etc., can solve the good conditions that cannot form particle aggregation, low solid-liquid separation efficiency, and cannot form Aggregate flocs and other problems, to achieve the effect of increased volume and density, easy separation, ammonia nitrogen and chromaticity reduction

Inactive Publication Date: 2016-09-28
张能力
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the traditional sewage treatment system, the sedimentation tank is used for sewage coagulation and sedimentation, which cannot form good conditions for particle aggregation, and cannot generate aggregate-type flocs, making the solid-liquid separation efficiency very low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A flocculant for sewage, raw materials according to parts by weight include: 0.01 part of dimethyl diallyl ammonium chloride, 0.3 part of sodium silicate, 3 parts of acrylamide, 0.1 part of dibenzoyl peroxide, tert-butanol 30 parts, 0.6 parts of ferric chloride, 4 parts of aluminum sulfate octadecahydrate, 6 parts of polyaluminum chloride, 10 parts of ferrous sulfate, 3 parts of polyphosphorus ferric chloride, 5 parts of chitosan, 10 parts of sodium alginate 10 parts of polyvinylpyridinium salt, 14 parts of porous adsorbent, 1 part of sodium bicarbonate, 60 parts of lignin, 20 parts of triethylenetriamine, 15 parts of sodium hydroxymethanesulfonate, 6 parts of propionaldehyde, 10 parts of alum .

[0021] The preparation method of described sewage flocculant, concrete steps are as follows:

[0022] (1) take each raw material according to parts by weight;

[0023] (2) Dissolve acrylamide and ferric chloride in tert-butanol, add dibenzoyl peroxide, carry out nitrogen rep...

Embodiment 2

[0029] A flocculant for sewage, raw materials according to parts by weight include: 0.02 parts of dimethyl diallyl ammonium chloride, 0.4 parts of sodium silicate, 3.5 parts of acrylamide, 0.15 parts of dibenzoyl peroxide, tert-butanol 35 parts, 0.7 parts of ferric chloride, 4.5 parts of aluminum sulfate octadecahydrate, 6.5 parts of polyaluminum chloride, 11 parts of ferrous sulfate, 3.5 parts of polyphosphorus ferric chloride, 6 parts of chitosan, 11 parts of sodium alginate 11 parts of polyvinylpyridinium salt, 15 parts of porous adsorbent, 1.2 parts of sodium bicarbonate, 65 parts of lignin, 22 parts of triethylenetriamine, 18 parts of sodium hydroxymethanesulfonate, 6.5 parts of propionaldehyde, 11 parts of alum .

[0030] The preparation method of described sewage flocculant, concrete steps are as follows:

[0031] (1) take each raw material according to parts by weight;

[0032] (2) Dissolve acrylamide and ferric chloride in tert-butanol, add dibenzoyl peroxide, carry...

Embodiment 3

[0038] A flocculant for sewage, raw materials according to parts by weight include: 0.03 parts of dimethyl diallyl ammonium chloride, 0.5 parts of sodium silicate, 4 parts of acrylamide, 0.2 parts of dibenzoyl peroxide, tert-butanol 40 parts, 0.8 parts of ferric chloride, 5 parts of aluminum sulfate octadecahydrate, 7 parts of polyaluminum chloride, 12 parts of ferrous sulfate, 4 parts of polyphosphorus ferric chloride, 8 parts of chitosan, 12 parts of sodium alginate 12 parts of polyvinylpyridinium salt, 16 parts of porous adsorbent, 1.5 parts of sodium bicarbonate, 70 parts of lignin, 25 parts of triethylenetriamine, 20 parts of sodium hydroxymethanesulfonate, 7 parts of propionaldehyde, 12 parts of alum .

[0039] The preparation method of described sewage flocculant, concrete steps are as follows:

[0040] (1) take each raw material according to parts by weight;

[0041] (2) Dissolve acrylamide and ferric chloride in tert-butanol, add dibenzoyl peroxide, carry out nitrog...

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Abstract

The invention discloses a flocculating agent for sewage and a preparation method thereof. The flocculating agent for the sewage is prepared from the following raw materials in parts by weight: dimethyl diallyl ammonium chloride, sodium silicate, acrylamide, dibenzoyl beroxide, tert-butyl alcohol, ferric chloride, aluminum sulfate octadecahydrate, polyaluminum chloride, ferrous sulfate, polyphosphorus ferric chloride, chitosan, sodium alginate, polyvinyl pyridine salt, a porous adsorbent, sodium bicarbonate, lignin, triethylenetriamide, formaldehyde sodium bisulfite, propionic aldehyde and alums. The capacity and density of the flocculating agent are increased and the flocculating effect is improved; suspension substances in the sewage can be effectively and rapidly flocculated and are gathered into clustered substances which are not easy to disperse and convenient to separate; meanwhile, the corrosion of the flocculating agent to pipeline equipment is lower than that of other similar flocculating agents; the chemical oxygen demand COD, the biochemical oxygen demand BOD and the suspension substances SS of the treated sewage are obviously reduced, and the total nitrogen, ammonia nitrogen and chroma are also reduced.

Description

technical field [0001] The invention relates to a sewage treatment agent, in particular to a sewage flocculant and a preparation method thereof. Background technique [0002] With the acceleration of urbanization in our country, at present, the sewage discharge of small and medium-sized cities (towns) accounts for more than half of the total sewage discharge in the country. With the rapid development of urban construction in the next 50 years, the discharge of domestic sewage and industrial wastewater It will increase several times, even more than ten times, which will certainly aggravate the deterioration of the water environment. Combined with the development status and problems faced by my country's current sewage treatment industry, it is pointed out that the development trend of my country's sewage treatment technology is still based on the development of simple, high-efficiency, and low-energy sewage treatment technology. In the traditional sewage treatment system, th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/52C02F1/54C02F1/56
CPCC02F1/5236C02F1/5263C02F1/54C02F1/56
Inventor 张能力
Owner 张能力
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