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Preparation method of sewage treatment flocculating agent

A technology for sewage treatment and flocculant, which is applied in water/sewage treatment, water/sludge/sewage treatment, flocculation/sedimentation water/sewage treatment, etc. It can solve the problem that the development, production and application of organic polymer flocculants are still in the development stage. , The overall quality level is not high, the economic scale has not been formed, etc., to achieve the effects of large flocs, low wear value, and simple and convenient preparation

Active Publication Date: 2019-03-08
湖南凌辉环保新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the research on organic polymer flocculants is mainly natural polymer compounds, and more studies are on starch, chitosan and microbial extracellular polymer compounds. However, the research, production and application of organic polymer flocculants in my country are still under development. stage, still a weak link
The technical gap is relatively large, mainly manifested in: low level of serialization, few special varieties, only two types of commercialized products: polyacrylamide and polyacrylic acid; low output, no economic scale, some varieties that have been industrialized abroad So far, it is still not qualified in our country; the production is backward, and the overall quality level is not high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Add 0.15mol diallylamine and 70mL mass fraction of 40% K in the reaction kettle 2 CO 3solution, and then respectively add 0.1mol of 1,4-dibromobutane and 20mL of NaOH solution with a concentration of 1mol / L into two constant pressure dropping funnels, and alternately drop 1,4-dibromobutane at intervals of 60s. Butyl bromide and NaOH solution. Keep the reaction temperature at 65°C, and continue the reaction for 4 hours after adding the materials. The reaction solution was transferred to a separatory funnel, and after standing for 15 min, the liquid was separated. Concentrate the separated water phase by rotary evaporation. After the water in the solution is spin-dried, add absolute ethanol to dissolve and filter until the inorganic salt is white. Recover the filtered inorganic salt crystals, and the filtrate is again concentrated by rotary evaporation. Absolute ethanol was essentially spin-dried. Then add acetone to the solution after rotary evaporation, and crystall...

Embodiment 2

[0050] Add 0.15mol diallylamine and 70mL mass fraction of 40% K in the reaction kettle 2 CO 3 solution, and then respectively add 0.1mol of 1,4-dibromobutane and 20mL of NaOH solution with a concentration of 1mol / L into two constant pressure dropping funnels, and alternately drop 1,4-dibromobutane at intervals of 30s. Butyl bromide and NaOH solution. Keep the reaction temperature at 60°C, and continue the reaction for 4 hours after adding the materials. The reaction solution was transferred to a separatory funnel, and after standing for 15 min, the liquid was separated. Concentrate the separated water phase by rotary evaporation. After the water in the solution is spin-dried, add absolute ethanol to dissolve and filter until the inorganic salt is white. Recover the filtered inorganic salt crystals, and the filtrate is again concentrated by rotary evaporation. Absolute ethanol was essentially spin-dried. Then add acetone to the solution after rotary evaporation, and crystal...

Embodiment 3

[0055] Add 0.15mol diallylamine and 70mL mass fraction of 40% K in the reaction kettle 2 CO 3 solution, and then respectively add 0.15mol of 1,4-dibromobutane and 30mL of NaOH solution with a concentration of 1mol / L into two constant pressure dropping funnels, and alternately drop 1,4-dibromobutane at intervals of 90s. Butyl bromide and NaOH solution. Keep the reaction temperature at 70°C, and continue the reaction for 4 hours after adding the materials. The reaction solution was transferred to a separatory funnel, and after standing for 15 min, the liquid was separated. Concentrate the separated water phase by rotary evaporation. After the water in the solution is spin-dried, add absolute ethanol to dissolve and filter until the inorganic salt is white. Recover the filtered inorganic salt crystals, and the filtrate is again concentrated by rotary evaporation. Absolute ethanol was essentially spin-dried. Then add acetone to the solution after rotary evaporation, and crysta...

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Abstract

The invention provides a preparation method of a sewage treatment flocculating agent. The method comprises the steps of mixing onium diallyl pyrrole bromide and onium diallyl piperidine bromide uniformly to obtain a mixture, then adding a certain amount of calcium silicate and kieselguhr into the mixture, and mixing uniformly to obtain the sewage treatment flocculating agent. The sewage treatmentflocculating agent has many functional groups, the floc formed is large, the flocculation speed is fast, the time required for treatment is short, the treatment effect is good, the dosage is small, the sludge production amount is small, the turbidity removal rate of domestic sewage reaches 90%, and the COD removal rate reaches 80%.

Description

technical field [0001] The invention belongs to the field of sewage purification, and in particular relates to a preparation method of a sewage treatment flocculant. Background technique [0002] With the rapid increase of population and the development of modern industry and agriculture, water consumption has increased sharply in recent years, especially the development of industry, which requires a large amount of industrial water, and the resulting industrial waste water is also increasing day by day, thus accelerating water pollution. Therefore, how to be cheap and effective? Sewage treatment has become a top priority. [0003] The flocculation-sedimentation method refers to adding a certain amount of flocculant to the wastewater to make it undergo physical and chemical reactions, so as to achieve the purpose of water purification. It is an economical and simple water quality treatment method commonly used at home and abroad. The core and key of the flocculation-sedimen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/52C02F1/54
CPCC02F1/5236C02F1/5263C02F1/54
Inventor 陈伟陈建平
Owner 湖南凌辉环保新材料科技有限公司
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