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Phosphorus control and oxygen slow release integrated treatment agent and preparation and application thereof

A treatment agent and slow-release oxygen technology, applied in the field of water treatment, can solve the problems of inconvenient recycling process and harm to health, and achieve the effect of preventing algae outbreaks, improving water quality, and promoting transformation.

Inactive Publication Date: 2021-06-22
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the patent CN102408151A, more colorless and toxic carbon tetrachloride is used as a solvent, and the standard limit of carbon tetrachloride in the surface water source of centralized drinking water is 0.002mg L -1 , volatile carbon tetrachloride may be harmful to health during the preparation process and the recovery process is inconvenient

Method used

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  • Phosphorus control and oxygen slow release integrated treatment agent and preparation and application thereof
  • Phosphorus control and oxygen slow release integrated treatment agent and preparation and application thereof
  • Phosphorus control and oxygen slow release integrated treatment agent and preparation and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0048] An integrated treatment agent for concentrated phosphorus control and slow-release oxygen, including stearic acid, water, calcium peroxide, bentonite, cement, fine sand and small molecular organic acids, stearic acid as embedding agent, and cement as embedding at the same time agent and plasticizer, fine sand as a pore-forming agent, small molecular organic acid as a buffer, stearic acid and cement to mix and embed calcium peroxide, bentonite, fine sand and small molecular organic acid, the mass fraction of stearic acid The mass fraction of calcium peroxide is 19.8%, the mass fraction of bentonite is 4.2%, the mass fraction of cement is 39.5%, the mass fraction of fine sand is 28.2%, and the mass fraction of small molecule organic acid is 1.7%.

[0049] The treatment agent is prepared by the following preparation method: at a temperature of 50°C, add 2.34g of stearic acid powder and 10mL of water to 5mL of absolute ethanol, stir for 5min until homogeneous and transparent...

Embodiment 2

[0077] An integrated treatment agent for centralized phosphorus control and slow-release oxygen, except that the mass fraction of calcium peroxide is 8%, that is, the quality of calcium peroxide powder added is 2.5g, all the other are the same as in Example 1.

Embodiment 3

[0079] An integrated treatment agent for centralized phosphorus control and slow-release oxygen, except that the mass fraction of calcium peroxide is 13%, that is, the quality of the added calcium peroxide powder is 4.3g, all the other are the same as in Example 1.

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Abstract

The invention relates to a phosphorus control and oxygen slow release integrated treatment agent and preparation and application thereof, the treatment agent comprises stearic acid, calcium peroxide, bentonite, cement, fine sand and small molecular organic acid, the stearic acid is used as an embedding agent, the calcium peroxide and the bentonite are mixed and embedded by the stearic acid, and the cement is used as a plasticizer. The preparation method specifically comprises the following steps: (1) adding stearic acid and water into ethanol, and heating and stirring until stearic acid is completely dissolved to obtain a homogeneous transparent solution containing stearic acid; (2) adding calcium peroxide into the transparent solution, and uniformly stirring; (3) continuously adding bentonite, cement and fine sand into the solution, and uniformly stirring; and (4) adding small molecular organic acid into the solution, uniformly stirring until the solution is viscous, then taking out the solution, carrying out compression molding, and drying and dewatering to obtain the integrated treatment agent. Compared with the prior art, the treatment agent disclosed by the invention has long-acting and slow-release effects, and can continuously adsorb and treat pollutants, control phosphorus in bottom mud to be released to a water body and slowly release oxygen.

Description

technical field [0001] The invention relates to the technical field of water treatment, in particular to an integrated treatment agent for centralized control of phosphorus and slow-release oxygen and its preparation and application. Background technique [0002] With the rapid development of my country's urban economy and the improvement of people's daily life, people have higher and higher requirements for the quality of urban river landscape. However, due to the imperfect rain and sewage diversion system in the old city, some industrial wastewater or domestic sewage and plant nutrients in surface runoff still exist in the city and are discharged to natural water bodies without treatment, which leads to the accumulation of nutrients in water bodies , the dissolved oxygen drops sharply, and the transparency decreases, so that the eutrophication degree of the water body is still very serious, which in turn triggers the algal blooms in the water body; for the river water body...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F1/28C02F1/42C02F3/02C02F11/02C02F101/10C02F1/66
CPCC02F1/281C02F1/42C02F1/66C02F3/025C02F9/00C02F11/02C02F2101/105C02F2103/007C02F2209/18C02F2209/22C02F2303/02Y02W10/10
Inventor 吕树光周志康杨儒民曾贵禄刘玉龙
Owner EAST CHINA UNIV OF SCI & TECH
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