A kind of polyvinylidene fluoride phosphorus removal film doped with lanthanum carbon composite adsorbent and its preparation method and application

A polyvinylidene fluoride and carbon composite technology, used in chemical instruments and methods, adsorbed water/sewage treatment, membranes, etc., can solve the problems of lanthanum leakage of lanthanum-carbon composite adsorbents, improve surface characteristics, and reduce dissolution loss. , to avoid the effect of agglomeration
CN111389243BActive Publication Date: 2022-03-08HANGZHOU NORMAL UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HANGZHOU NORMAL UNIVERSITY
Publication Date
2022-03-08

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Abstract

The invention discloses a polyvinylidene fluoride phosphorus removal membrane doped with a lanthanum-carbon composite adsorbent suitable for the field of water treatment. The composition includes a lanthanum-carbon composite adsorbent with a mass percentage of X and a polyvinylidene fluoride with a mass percentage of Y , 0<X≤30%, 70%≤Y<100%. The preparation method of the polyvinylidene fluoride phosphorus removal membrane comprises the steps: (a) adding polyvinylidene fluoride and lanthanum carbon composite adsorbent into N-methylpyrrolidone and fully stirring to obtain a uniform casting solution; (b) adding the polyvinylidene fluoride The casting solution is left to stand in a vacuum to remove air bubbles, and then scraped and coated on a glass plate, then placed in the air for 25-35 seconds, then immersed in an ethanol solution, solidified to form a film, and then peeled off 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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