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Preparation method and application of ecological modified bentonite phosphorus fixing agent

A soil phosphorus-fixing agent and modification technology, used in chemical instruments and methods, other chemical processes, biological sludge treatment, etc. Effect

Pending Publication Date: 2022-04-12
广东古匠环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Most of the existing modified bentonite phosphorus removal materials are in powder form, which can only be used once and can only treat phosphorus materials in water, and the treatment effect on phosphorus materials in sludge is not obvious

Method used

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Embodiment Construction

[0020] In the specific implementation process, the preparation method of the ecologically modified bentonite phosphorus-fixing agent comprises the following steps:

[0021] (1) adding a concentration of 1 mol / L NaOH solution to a concentration of 0.1 mol / L mol / L LaCl3 solution, adjusting the pH to 10, and then supersonicating for 10 minutes for sufficient ultrasonication to prepare a lanthanum solution;

[0022] (2) Mix and stir the bentonite and the lanthanum solution obtained in step (1) in a ratio of 6:4, and then ultrasonically perform sufficient ultrasonication for 30 minutes;

[0023] (3) Pour the mixture obtained in step (2) into a spherical mold and fire at a temperature of 150-200°C. By inflating the mixture in the spherical mold, the fired finished product has a porous structure, and the ecological Modified bentonite phosphorus fixative.

[0024] Among them, the mixture in the spherical mold is inflated in multiple directions to improve the porosity and uniformity o...

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Abstract

The invention provides a preparation method and application of an ecological modified bentonite phosphorus fixing agent. The preparation method of the ecological modified bentonite phosphorus fixing agent comprises the following steps: performing ultrasonic treatment on a lanthanum chloride solution in an alkaline environment, mixing and stirring the lanthanum chloride solution and bentonite in proportion, performing ultrasonic treatment, pouring an obtained mixture into a spherical mold, firing, inflating the mixture in the spherical mold to enable a fired finished product to be of a porous structure, and drying to obtain the ecological modified bentonite phosphorus fixing agent. The ecological modified bentonite phosphorus fixing agent is obtained. The fired ecological modified bentonite phosphorus fixing agent has a certain weight, can better sink at the bottom of a water body and continuously absorb phosphorus elements in bottom mud, and the ecological modified bentonite phosphorus fixing agent has a porous structure and is larger in contact area with water, so that the phosphorus fixing effect of the ecological modified bentonite phosphorus fixing agent is better, and the service life of the ecological modified bentonite phosphorus fixing agent is prolonged. Meanwhile, the porous structure can enable microorganisms to have an attached carrier, the water quality purification effect is improved, phosphorus materials in water and sludge can be continuously absorbed for a long time, and the long-acting effect on water quality purification of the whole body is achieved.

Description

technical field [0001] The invention relates to the field of environmental protection and treatment, in particular to a preparation method and application of an ecologically modified bentonite phosphorus-fixing agent. Background technique [0002] Environmental protection, the full name of environmental protection, refers to the general term of various actions taken by human beings to solve actual or potential environmental problems, coordinate the relationship between human beings and the environment, and ensure the sustainable development of economy and society. Its methods and means include engineering technology, administrative management, innovative research and development, as well as legal, economic, publicity and education, etc. A large amount of sewage containing phosphorus elements is discharged into the lake, which will cause water pollution problems such as algae blooms and red tides. Generally, bentonite is modified to have phosphorus removal function, and the m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/12B01J20/28B01J20/30C02F11/00C02F11/02C02F1/28C02F3/10C02F101/10
CPCY02W10/10
Inventor 龚佳林刘虹陈衍东蔡萍
Owner 广东古匠环保科技有限公司
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