A kind of preparation method of ultra-efficient sewage dephosphorization adsorbent

A phosphorus adsorbent, an ultra-efficient technology, applied in water/sewage treatment, chemical instruments and methods, adsorbed water/sewage treatment, etc., which can solve the problem of limiting phosphorus adsorption, reducing the effective contact area between MgO and solution, and low Mg loading and other problems, to achieve the effect of enhanced removal capacity, high MgO content, and fast adsorption kinetics

Active Publication Date: 2021-11-26
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology

The carbon matrix with larger particle size not only leads to lower Mg loading (molar ratio <20%), but also reduces the effective contact area between MgO and solution, thus limiting the further improvement of phosphorus adsorption by Mg-carbon composites. improve

Method used

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  • A kind of preparation method of ultra-efficient sewage dephosphorization adsorbent
  • A kind of preparation method of ultra-efficient sewage dephosphorization adsorbent
  • A kind of preparation method of ultra-efficient sewage dephosphorization adsorbent

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Embodiment 1

[0036] Will have 5g of magnesium bar Al 2 O 3 Ark is placed in the tube furnace, and the flow rate is 70cm in the furnace. 3 / min CO 2 The gas is heated to 680 ° C, and the magnesium strip is combined with the magnesium strip, after 1 h after 1 h, naturally cooled to room temperature, collect the solid product and washed with deionized water, and then placed in an oven at 80 ° C, drying, Ultra high-efficiency sewage is obtained.

[0037] figure 1 In the XRD map, the diffraction peaks located at 37.10 °, 43.08 °, 62.46 °, 74.86 ° and 78.78 ° correspond to the Six-sided structure (111), (200), (220), respectively. (311) and (222) crystal surface; there is a diffraction peak having a low intensity near 26 °, corresponding to the (002) crystal surface of C. This result indicates that the adsorbent containing MgO crystals and amorphous carbon (the prepared adsorbent)) is successfully prepared.

[0038] From figure 2 with image 3 In the SEM image of different magnification, the prepar...

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Abstract

The invention relates to a preparation method of an ultra-efficient sewage dephosphorization adsorbent, which belongs to the technical field of sewage treatment and adsorbent. This method utilizes the combustion reaction of metal magnesium in a carbon dioxide atmosphere to realize the simultaneous generation of MgO crystals and amorphous carbon in one step simply and quickly, and the two are uniformly combined at the nanometer scale, and the formed magnesium-based nanocomposite carbon material is ultra-efficient. Sewage phosphorus removal adsorbent, the adsorbent has extremely fast adsorption kinetics, wide pH range and strong anti-impurity anion interference performance, and the adsorption capacity of phosphorus in the solution is higher than 1000mg / g, and can be used in various The effect of efficient and rapid phosphorus removal can be achieved in the actual sewage with complex components. The method of the present invention has simple operation, short preparation cycle, abundant and cheap source of raw materials, and the adsorbent has environmental non-toxicity, does not cause secondary pollution during the preparation of the adsorbent and application of phosphorus removal, and has good application prospect.

Description

Technical field [0001] The present invention relates to a preparation method of ultra-efficient sewage in addition to phosphorization adaptives, which belongs to sewage treatment and adsorbent technology. Background technique [0002] With the increasing development and utilization of environmental resources, urbanization and industrialization of urbanization and industrialization, as well as a large number of agricultural fertilizers and phosphorus-containing detergents, the nitrogen and phosphorus nutrients in water, and phosphorus nutrients are increasing in the lake, reservoir and river. Causes a lot of algae to reproduce, thereby causing a large area of ​​hydraulic eutrophication. Eutrophication not only seriously destroys the ecological environment of the water, which reduces the use of the water body, accelerates the water failure, and will affect shipping and hinders economic development. At present, the problem of eutrophication in water in the river and lakes in my coun...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/20B01J20/04B01J20/30C02F1/28C02F101/10
CPCB01J20/041B01J20/20B01J20/3078C02F1/288C02F2101/105
Inventor 姚莹王美玲赵托张艳
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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