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Preparation method and application of magnetic biological flocculant

A biological flocculant and magnetic technology, applied in chemical instruments and methods, biological water/sewage treatment, water pollutants, etc., can solve problems such as complex heavy metal ion methods, secondary pollution costs, and difficult product separation, achieving simple and fast Effect of separation and recovery, reduction of flocculation cost and improvement of flocculation efficiency

Inactive Publication Date: 2018-12-18
江苏哈宜环保研究院有限公司
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  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to solve the problems of complex methods for removing heavy metal ions by existing flocculants, difficulty in separating residual flocculants from flocculated products, long separation time, secondary pollution and high cost, and to provide a magnetic biological flocculation The preparation method and application of the agent

Method used

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  • Preparation method and application of magnetic biological flocculant
  • Preparation method and application of magnetic biological flocculant
  • Preparation method and application of magnetic biological flocculant

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specific Embodiment approach 1

[0029] Specific implementation mode 1: This implementation mode is a preparation method of a magnetic bioflocculant, which is completed according to the following steps:

[0030] 1. Preparation of magnetic Fe 3 o 4 Particles:

[0031] FeCl 3 ·6H 2 O and FeSO 4 ·7H 2 Dissolve O into the solvent, heat it in a water bath to 85°C-95°C, then add ammonia water and distilled water with a mass fraction of 25% in sequence, stir and react at a temperature of 85°C-95°C for 20min-40min, then cool naturally to room temperature, and then Centrifuge to collect the black precipitate; use distilled water to wash the black precipitate until the washing solution is neutral to obtain the magnetic Fe 3 o 4 particles;

[0032] FeCl as described in step 1 3 ·6H 2 The volume ratio of the mass of O to the solvent is (6g~7g):100mL;

[0033] FeSO as described in step one 4 ·7H 2 The volume ratio of the mass of O to the solvent is (4g~5g):100mL;

[0034] The mass fraction described in step ...

specific Embodiment approach 2

[0058] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the solvent described in step 1 is distilled water. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0059] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is: in step one, FeCl 3 ·6H 2 O and FeSO 4 ·7H 2 Dissolve O into the solvent, heat in a water bath to 85°C-90°C, then add ammonia water and distilled water with a mass fraction of 25% in sequence, stir and react at a temperature of 85°C-90°C for 20min-30min, then cool naturally to room temperature, and then Centrifuge to collect the black precipitate; use distilled water to wash the black precipitate until the washing solution is neutral to obtain the magnetic Fe 3 o 4 particles. Others are the same as in the first or second embodiment.

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Abstract

The invention provides a preparation method and application of a magnetic biological flocculant, relates to a preparation method and application of a flocculant and aims to solve the problems of secondary pollution and high cost caused by difficult separation between the residual flocculant and the flocculated product and long separation time in the complicated method for removing heavy metal ionsthrough the existing flocculant. The method comprises the following steps: step one, preparing magnetic Fe3O4 particles; step two, preparing a biological flocculant MFX solution; and step three, compounding to obtain the magnetic biological flocculant. The prepared magnetic biological flocculant is used for removing Pb<2+> in the wastewater; the removal rate of the magnetic biological flocculanton the wastewater with low concentration being 5-15 mg / L of Pb<2+> reaches over 90% or more. The prepared magnetic biological flocculant is used for removing Pb<2+> in the wastewater.

Description

technical field [0001] The invention relates to a preparation method and application of a flocculant. Background technique [0002] The rapid development of industry and agriculture in recent years has led to an increase in heavy metal emissions from more and more industries such as metallurgy, electroplating, chemical industry, and tanning. In addition, the increased use of pesticides and fertilizers has led to frequent occurrence of heavy metal pollution incidents. Heavy metals cannot be biodegraded, and are easily accumulated in large quantities in organisms. Trace amounts of heavy metals in environmental media can be enriched hundreds of times or even hundreds of thousands of times in organisms, and then poison the human body through the food chain. Therefore, how to effectively control heavy metal pollution has become one of the problems to be solved in the field of environmental protection. [0003] There are many conventional methods for treating heavy metals, mainly...

Claims

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Application Information

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IPC IPC(8): C02F3/34C02F101/20
CPCC02F3/34C02F2101/20
Inventor 李昂马放郭海娟
Owner 江苏哈宜环保研究院有限公司
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