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Preparation method of source phosphorus adsorption material in water

An adsorption material and water body technology, applied in the field of environmental governance, can solve the problems of introducing chemical risks into water bodies, poor phosphorus release inhibition, and reduced phosphorus adsorption capacity, etc., and achieve simple and easy production, large adsorption capacity and strong phosphorus adsorption capacity Effect

Inactive Publication Date: 2016-03-23
SUZHOU UNIV OF SCI & TECH
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Problems solved by technology

Therefore, the inhibition of phosphorus release by physical covering materials is less than that of chemical covering materials
However, the chemical covering method also has many disadvantages. First, it may introduce chemical risks to the water body; second, once the pores of the material are blocked, the phosphorus adsorption capacity will be greatly reduced.
Therefore, the application of chemical coverage methods still has many limitations.

Method used

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Effect test

Embodiment 1

[0021] A method for preparing a water body source phosphorus adsorption material, the steps of the preparation method are as follows:

[0022] (1) Dredged sediment treatment

[0023] Firstly, the dredged bottom sludge of the water body is screened with a 1mm iron screen to remove large particles, then placed in an oven, dried at 110°C for 3.5 hours, then crushed, and screened with a 100-mesh screen to obtain the treated dredged bottom of the water body Mud, take by weighing 2kg of treated water body dredged bottom mud;

[0024] (2) Sludge treatment in water purification plants

[0025] Dewatered sludge from waterworks (Al 2 o 3 content of 23.6%) with a 1mm iron sieve to remove large particles, then placed in an oven, dried at 110°C for 3.5 hours, then crushed, sieved with a 100-mesh sieve to obtain the treated water purification plant sewage Mud, take 1kg treated water purification plant sludge;

[0026] (3) Preparation of phosphorus adsorption materials in water

[0027...

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Abstract

The invention provides a preparation method of source phosphorus adsorption material in water. The preparation method includes the following steps that dredged sediment in the water is dried for 2-4 hours at the temperature of 110 DEG C after being filtered with an iron mesh with the hole diameter being 1-2 mm, then ground and sieved with a 100-mesh sieve, and processed dredged sediment in the water is obtained; sludge in a water treatment plant is dried for 2-4 hours at the temperature of 110 DEG C after being filtered with an iron mesh with the hole diameter being 1-2 mm, then ground and sieved with a 100-mesh sieve, and processed sludge in the water treatment plant is obtained; the processed dredged sediment in the water and the processed sludge in the water treatment plant are mixed to be uniform with a stirrer, a mixed material is obtained, the weight ratio of the processed dredged sediment in the water to the processed sludge in the water treatment plant is (2-3):1, the stirring speed of the stirrer is 100 RPM, and the stirring time is 10 min; the mixed material is burnt for 2-4 hours at the temperature of 550 DEG C, and the source phosphorus adsorption material in water can be obtained. The adsorption material prepared through the method is high in adsorption capacity of phosphorus and large in adsorption volume.

Description

technical field [0001] The invention belongs to the technical field of environmental treatment, and in particular relates to a method for preparing an adsorption material for phosphorus in water. Background technique [0002] For water restoration, how to control endogenous release has become a key issue. As a limiting factor for the growth of phytoplankton, phosphorus has attracted much attention in the process of water body restoration, and endogenous phosphorus has become the main source of phosphorus in many water bodies. [0003] The control methods of endogenous phosphorus release mainly include covering method and sediment dredging. The former is to use some kind of material to isolate the water body from the sediment to avoid the release of endogenous sources; the latter is to directly dredge the water body sediment, that is, to directly remove the pollution source of the water body. Compared with the former, the coverage method is simple and easy to implement, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/02C02F1/28
CPCB01J20/02B01J2220/44B01J2220/4887C02F1/281C02F2101/105
Inventor 李大鹏朱培颖黄勇李勇
Owner SUZHOU UNIV OF SCI & TECH
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