Sewage treatment agent and preparation method thereof

A sewage treatment agent and pretreatment technology, applied in water/sewage treatment, water/sludge/sewage treatment, flocculation/sedimentation water/sewage treatment, etc., can solve the problem of high input cost, achieve high safety, complex The effect of improved performance and convenient operation

Inactive Publication Date: 2019-01-18
曹布道
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  • Claims
  • Application Information

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Problems solved by technology

[0006] Prior art, such as the Chinese invention patent whose authorized announcement number is CN104211184B, discloses a microbial sewage treatment agent for livestock and poultry breeding wastewater treatment, which consists of the following active ingredients by weight: 10-20 parts of nitrifying bacteria, 15-30 parts Denitrifying bacteria, 10-50 parts of Bacillus, 5-20 parts of biological enzymes, 5-15 parts of lactic acid bacteria, 10-20 parts of yeast bacteria, 20-40 parts of photosynthetic bacteria, using microbial communities for joint purification, with Efficient treatment effect, but in actual production, the input cost of using a large amount of microbial reagents is high

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  • Sewage treatment agent and preparation method thereof

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Effect test

Embodiment 1

[0028] A sewage treatment agent, including oxidatively modified lignosulfonate in the sewage treatment agent, the above-mentioned oxidatively modified lignosulfonate is obtained by adding lignosulfonate to hydrogen peroxide in the presence of alkali The oxidant is obtained by oxidative modification with trimethylamine hydrochloride and 5-aminolevulinic acid as initiators. The oxidative modification products of lignosulfonate have functional groups such as phenolic hydroxyl group, alcoholic hydroxyl group, carboxyl group, carbonyl group, sulfonic acid group, etc., and carboxyl group and sulfonic acid group are flocculation functional groups; Cooperative function is a scale-inhibiting functional group; sulfonic acid group and phenolic hydroxyl group can be adsorbed on the metal surface to protect the metal, and the phenolic ether structure has the effect of stabilizing the protective film, so it has the effect of corrosion inhibition and rust prevention. The oxidative modificati...

Embodiment 2

[0039] A sewage treatment agent, comprising the following raw materials in parts by weight: 39 parts of lignosulfonate oxidation modification products, 25 parts of polyacrylamide and derivatives thereof, 12 parts of diatomite, 11 parts of sulfur Urea, 9 parts of acrolein, 27 parts of aminated attapulgite, 13 parts of propylene oxide.

[0040] A kind of preparation method of above-mentioned sewage treatment agent, its concrete steps are as follows:

[0041] 1) adding sodium sulfite to lignin at a weight ratio of 1:4.3, and reacting for 3.5 hours at a pH of 12 and a temperature of 98°C to obtain lignosulfonate;

[0042] 2) After the lignosulfonate is prepared into an aqueous solution with a concentration of 29%, the pH is adjusted to 8, heated to 80° C., and then 22% and 0.53% of the weight of the lignosulfonate are added respectively. Oxidant and initiator, Insulation and stirring reaction at a speed of 450r / min for 1.25h can obtain the oxidative modification product of lignos...

Embodiment 3

[0048] A sewage treatment agent, comprising the following raw materials in parts by weight: 38 parts of lignosulfonate oxidation modification products, 22 parts of polyacrylamide and derivatives thereof, 14 parts of diatomaceous earth, 12 parts of sulfur Urea, 7 parts of acrolein, 28 parts of aminated attapulgite, 15 parts of propylene oxide.

[0049] A kind of preparation method of above-mentioned sewage treatment agent, its concrete steps are as follows:

[0050] 1) adding sodium sulfite to lignin at a weight ratio of 1:4.8, and reacting for 3 hours at a pH of 11 and a temperature of 95°C to obtain lignosulfonate;

[0051] 2) After the lignosulfonate is prepared into an aqueous solution with a concentration of 28.5%, the pH is adjusted to 10, heated to 85° C., and then 20.5% and 0.42% of the weight of the lignosulfonate are added respectively. Oxidant and initiator, Insulate and react at a speed of 500r / min for 1h to obtain the oxidatively modified product of lignosulfonate...

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Abstract

The invention provides a sewage treatment agent and belongs to the technical field of sewage treatment. The sewage treatment agent comprises an oxidation modification product of lignosulfonate; the oxidation modification product of the lignosulfonate is obtained by taking hydrogen peroxide as an oxidant, and trimethylamine hydrochloride and 5-aminolevulinic acid as initiators under the environmentcontaining alkali and carrying out oxidation modification. A preparation method of the treatment agent comprises the following steps: preparing aminated attapulgite into a suspension solution; addingthe oxidation modification product of the lignosulfonate, polyacrylamide and a derivative thereof, diatomite, thiourea, acrylaldehyde and propylene oxide into the suspension solution; stirring, suction filtering and drying to obtain the treatment agent. The sewage treatment agent provided by the invention has the advantages of high flocculation strength, high stability and activity, good hydrophobic property, good chemical corrosion resistance and heat resistance, no corrosion, small dosage, high treatment efficiency and low treatment cost; the preparation method has the advantages of simplicity, great parameter controllability, high safety and low production cost.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to a sewage treatment agent and a preparation method thereof. Background technique [0002] Eutrophication refers to the phenomenon of water pollution caused by excessive plant nutrients such as nitrogen and phosphorus. Eutrophication restricts the sustainable economic and social development of lake basins, and has become one of the most serious ecological and environmental problems in the world. The discharge of livestock and poultry manure and flushing sewage is one of the main causes of eutrophication in water bodies. Most of the large amount of wastewater discharged from livestock and poultry breeding is directly discharged without proper recycling, treatment and disposal, causing serious pollution to the environment. However, livestock and poultry manure is not only a source of pollution, but also a resource that can be developed and utilized. Among live...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F5/10
CPCC02F1/288C02F1/56C02F5/10C02F2303/08
Inventor 曹布道
Owner 曹布道
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