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Magnetic flocculating agent and application method thereof

A magnetic flocculant and application method technology, applied in the direction of flocculation/sedimentation water/sewage treatment, etc., can solve problems such as secondary pollution, achieve the effects of saving operating costs, rapid settlement, and easy recycling

Active Publication Date: 2014-12-17
河南汇思原环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional flocculation and sedimentation method mostly uses flocculants to be added to the wastewater to form a large amount of sediment, which contains chemical agents, causing secondary pollution.

Method used

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  • Magnetic flocculating agent and application method thereof
  • Magnetic flocculating agent and application method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] This experiment adopts the method of comparison, and selects five groups of magnetic flocculant prepared by different ratio formulas. The wastewater treated in this experiment is urban wastewater. 25mg of magnetic flocculant is added to 1000mL of the wastewater, and the modified magnetic flocculant The optimal ratio formula in the agent.

[0019] Wastewater quality: The samples taken in this experiment come from urban sewage treatment plants. The indicators of wastewater pollutants are as follows: suspended solids 45mg / L, chroma 150 (times), turbidity 50 (degrees), phosphate 1.69mg / L.

[0020] The ratio of ferroferric oxide magnetic powder, γ-aminopropyltriethoxysilane and glutaraldehyde in No. 1 magnetic flocculant is 100:0.5:0.5;

[0021] The ratio of ferroferric oxide magnetic powder, γ-aminopropyltriethoxysilane and glutaraldehyde in No. 2 magnetic flocculant is 100:0.6:0.6;

[0022] The ratio of ferroferric oxide magnetic powder, γ-aminopropyltriethoxysilane and g...

Embodiment 2

[0030] This experiment adopts the comparative method, one is to use the flocculant prepared by the traditional reagent combination method to treat the fish processing wastewater, and the other is to treat the fish processing wastewater with the magnetic flocculant prepared by No. 4 scheme in Example 1, The treatment method adopts the beaker experiment, and the treatment volume of each fish processing wastewater is 1000mL. As shown in Table 2, three groups of flocculants with different addition amounts were selected for comparative experiments, and the COD content in the treated wastewater used was 3800 mg / L.

[0031] Table 2 Data table of three groups of different flocculants

[0032]

[0033] Take the traditional flocculant and magnetic flocculant with the addition amount of 150mg, 250mg and 350mg respectively, put the three groups of flocculants into the wastewater with COD content of 3800mg / L,

[0034] The COD content in the wastewater was measured respectively, and the...

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Abstract

The invention relates to a magnetic flocculating agent applied to the field of sewage treatment. The magnetic flocculating agent consists of ferroferric oxide magnetic powder, gamma-amino acid propyl triethoxy silane and glutaraldehyde. The ferroferric oxide magnetic powder surface of the prepared magnetic flocculating agent is coated with an organic functional film in a chemical monomolecular layer coating mode, and the magnetic flocculating agent removes pollutants by utilizing absorption, agglomeration, coprecipitation and other effects of functional groups and the pollutants. Fish protein is recovered by utilizing the magnetic flocculating agent, the protein recovery rate can be improved, recovered materials do not contain chemical agents, the used magnetic flocculating agent can be recycled, and operation cost is saved. The magnetic flocculating agent can be widely applied to treatment of inorganic waste water containing phosphorus, heavy metal ions and the like and treatment of high-turbidity organic waste water with suspended matter of enterprises in the industries of papermaking, food processing, cultivation, petrochemical engineering and the like.

Description

technical field [0001] The invention relates to a flocculant, in particular to a modified magnetic flocculant. Background technique [0002] Coagulation and sedimentation technology is a commonly used technology in sewage treatment process and deep water purification process. It is indispensable to be applied to various coagulants, coagulation aids and other chemical agents. After treatment, a large amount of solid waste is generated, causing secondary Pollution is the soft underbelly of this technology. How to avoid secondary damage to the environment and develop environmentally friendly technical products has become the common concern of experts and scholars at home and abroad. At present, many products that are non-toxic to the environment have been developed, such as starch graft copolymers and microbial flocculants. [0003] Because fish processing wastewater contains a large amount of recyclable fish protein (which can be processed into high value-added fish meal for...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/52
Inventor 王伟
Owner 河南汇思原环保科技有限公司
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