Use of rare-earth element in cultivating aerobic particle mud and controlling mud expansion

A technology of aerobic granular sludge and rare earth elements, applied in water/sludge/sewage treatment, rare earth metal compounds, biological water/sewage treatment, etc., can solve the problems of aerobic granular sludge and no in-depth research.
CN100393869CInactive Publication Date: 2008-06-11SHANDONG UNIV
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
SHANDONG UNIV
Publication Date
2008-06-11
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The present invention discloses the application of RE element in cultivating aerobic sludge particle and controlling sludge expansion. During cultivating aerobic sludge particle, RE element solution of concentration below 30 mg / L is thrown into the biochemical reactor once every three days. Thus cultivated aerobic sludge particle with RE element has short forming period, large particle, low water content, high deposition rate, low SVI, high COD load and other advantages.
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Description

technical field

[0001] The invention relates to the fields of biological effects of rare earths and environmental microorganisms, and in particular to utilizing the unique biological characteristics of rare earth elements in microorganisms and applying them to the rapid cultivation of aerobic granular sludge and the control of sludge bulking. Background technique

[0002] 1. Rare earth

[0003] China is a country with a large amount of rare earth resources, and it ranks among the world's leading countries in terms of rare earth mineral products, total resources and industrial reserves. The application of rare earths is becoming more and more extensive. It is known that rare earths are used in metallurgical industry, petrochemical industry, agriculture, medicine and other fields. The research on the biological activity of rare earth elements began in the early 20th century. From a large number of documents, it is known that rare earth elements have a wide range of biological...

Claims

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