Lanthanum-carbon composite adsorbent doped polyvinylidene fluoride phosphorus removal film as well as preparation method and application thereof

A polyvinylidene fluoride and carbon composite technology, which is applied in chemical instruments and methods, adsorption water/sewage treatment, membranes, etc., can solve the problems of lanthanum leakage of lanthanum-carbon composite adsorbents, improve surface properties, avoid agglomeration, The effect of improving dispersion
CN111389243AActive Publication Date: 2020-07-10HANGZHOU NORMAL UNIVERSITY
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
HANGZHOU NORMAL UNIVERSITY
Publication Date
2020-07-10

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Abstract

The invention discloses a lanthanum-carbon composite adsorbent doped polyvinylidene fluoride phosphorus removal film, which is suitable for the field of water treatment, and comprises a lanthanum-carbon composite adsorbent with the mass percent of X and polyvinylidene fluoride with the mass percent of Y, X is more than 0 and less than or equal to 30 percent, and Y is more than or equal to 70 percent and less than 100 percent. The preparation method of the polyvinylidene fluoride phosphorus removal membrane comprises the following steps: (a) adding polyvinylidene fluoride and a lanthanum-carboncomposite adsorbent into N-methyl pyrrolidone, and fully stirring to obtain a uniform membrane casting solution; and (b) performing standing on the membrane casting solution, removing bubbles in vacuum, blade-coating a glass plate with the membrane casting solution, placing the glass plate in air for 25-35 seconds, immersing the glass plate in an ethanol solution, curing to form a membrane, and removing the membrane from the glass plate.
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Description

technical field

[0001] The invention relates to the technical field of water treatment, in particular to a polyvinylidene fluoride phosphorus removal membrane doped with a lanthanum-carbon composite adsorbent and a preparation method and application thereof. Background technique

[0002] Excessive concentration of nitrogen and phosphorus nutrients in the water body will lead to eutrophication of the water body, promote the proliferation of harmful algae, and form algal blooms. The occurrence of algal blooms poses a serious threat to drinking water supplies and the conservation of aquatic ecosystems. Reducing the input of nutrients, especially phosphorus, is an important part of eutrophication management. Among them, controlling the concentration of total phosphorus in sewage is an effective method.

[0003] At present, sewage biological phosphorus removal technology is sensitive to changes in organic loads, toxic substances, and reactor operating parameters, and its phospho...

Claims

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