Composite organic and inorganic polymeric flocculant and preparation process and application of composite organic and inorganic polymeric flocculant

An inorganic polymer and flocculant technology, applied in the direction of flocculation/sedimentation water/sewage treatment, etc., can solve the problems of unsatisfactory wastewater treatment effect, achieve ideal effect, simple production process, and short production cycle

Active Publication Date: 2011-08-17
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing composite organic-inorganic polymer flocculant still has certain defects, and its wastewater treatment effect is not ideal.

Method used

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  • Composite organic and inorganic polymeric flocculant and preparation process and application of composite organic and inorganic polymeric flocculant
  • Composite organic and inorganic polymeric flocculant and preparation process and application of composite organic and inorganic polymeric flocculant
  • Composite organic and inorganic polymeric flocculant and preparation process and application of composite organic and inorganic polymeric flocculant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] 1. The raw materials and consumption thereof of the present embodiment:

[0057] Dimethylamine: 60 kg

[0058] Urea: 40kg

[0059] Epichlorohydrin: 200 kg

[0060] Catalyst (sodium hydroxide): 10 kg

[0061] Cross-linking agent (1,2-ethylenediamine): 90 kg

[0062] Solvent (ammonium chloride): 10 kg

[0063] Additive (polyacrylic acid): 5 kg

[0064] Aluminum salt (aluminum chloride): 180 kg

[0065] Water: 405 kg

[0066] 2. the process steps and process parameters of the present embodiment:

[0067] Add 40 kg of urea, 60 kg of dimethylamine, 10 kg of sodium hydroxide and water to the reactor in sequence at 50°C, stir until the urea is completely dissolved and mixed evenly, then add 200 kg of epichlorohydrin dropwise, add dropwise After completion, slowly raise the temperature of the reaction system to 75°C, add 90 kg of 1,2-ethylenediamine, react for 4 hours, then add 10 kg of ammonium chloride and 5 kg of polyacrylic acid with an average molecular weight of 5...

Embodiment 2

[0069] 1. The raw materials and consumption thereof of the present embodiment:

[0070] Dimethylamine: 130 kg

[0071] Urea: 85 kg

[0072] Epichlorohydrin: 216 kg

[0073] Catalyst (potassium hydroxide): 4 kg

[0074] Cross-linking agent (1,2-ethylenediamine / 1,3-propylenediamine, mass ratio 1:2): 60 kg

[0075] Solvent (ammonium chloride / ammonium sulfate, mass ratio 2:1): 24 kg

[0076] Additive (polyacrylic acid): 6 kg

[0077] Aluminum salt (aluminum sulfate): 120 kg

[0078] Water: 355 kg

[0079] 2. the process steps and process parameters of the present embodiment:

[0080] Add 85 kg of urea, 130 kg of dimethylamine, 4 kg of potassium hydroxide and a certain amount of water to the reactor in sequence at 55°C, stir until the urea is completely dissolved and mix evenly, then add 216 kg of epichlorohydrin dropwise, After the dropwise addition, slowly raise the temperature of the reaction system to 80°C, add 60 kg of 1,2-ethylenediamine / 1,3-propylenediamine mixture, ...

Embodiment 3

[0082] 1. The raw materials and consumption thereof of the present embodiment:

[0083] Dimethylamine: 78 kg

[0084] Urea: 102 kg

[0085] Epichlorohydrin: 126 kg

[0086] Catalyst (sodium carbonate): 8 kg

[0087] Cross-linking agent (1,4-butylene diamine): 52 kg

[0088] Solvent (ammonium nitrate): 16 kg

[0089] Additive (polyacrylic acid): 8 kg

[0090] Aluminum salt (potassium aluminum sulfate): 160 kg

[0091] Water: 450kg

[0092] 2. the process steps and process parameters of the present embodiment:

[0093] Add 102 kg of urea, 78 kg of dimethylamine, 8 kg of sodium carbonate and a certain amount of water to the reactor in sequence at 60°C, stir until the urea is completely dissolved and mix well, then add 126 kg of epichlorohydrin dropwise, After the addition, slowly raise the temperature of the reaction system to 85°C, add 52 kg of 1,4-butylene diamine, react for 5 hours, then add 16 kg of ammonium nitrate and 8 kg of polyacrylic acid with an average molecul...

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Abstract

The invention relates to a composite organic and inorganic polymeric flocculant and a preparation process and application of the composite organic and inorganic polymeric flocculant. The composite organic and inorganic polymeric flocculant is a primrose yellow liquid product. The relative molecular weight of the product is in the range of 100,000 to 1000,000. At a temperature of 20 DEG C, the density of the product is in the range of 1.05 to 1.36g/mL and the pH value of the product is in the range of 2.0 to 3.5. The flocculant is suitable for treating high-chromaticity and high-turbidity wastewater containing organisms difficult to degrade, is particularly suitable for treating pulp and paper making wastewater, printing and dying wastewater and organic wastewater containing active groups and has a simple preparation method and mild process conditions. Conventional equipment is adopted, the preparation process is carried out under normal pressure, the preparation cost is low and no three wastes are discharged.

Description

technical field [0001] The invention belongs to the fields of fine chemical industry and environmental protection, and more specifically relates to a composite organic-inorganic macromolecule flocculant and its preparation process and its application in pulping and papermaking wastewater, printing and dyeing wastewater, and organic wastewater containing active groups. Background technique [0002] With the rapid growth of my country's economy, the shortage of water resources has become increasingly prominent, and at the same time, the pollution of water environment has become more and more serious. Among them, the paper industry and the printing and dyeing industry are two major traditional water users, and they are also important sources of water pollution. According to statistics, my country's paper industry wastewater and printing and dyeing wastewater discharge and COD Cr Its discharge ranks first among other types of industrial discharge in China, and its pollution to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/56C08G59/10
Inventor 刘明华黄漂漂颜爱
Owner FUZHOU UNIV
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