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Sludge treatment method and its artificial wetland treatment pool

A technology for constructed wetland and sludge treatment, applied in the field of sewage and sludge treatment, can solve the problems of high price, fragile and disproportionate sewage treatment cost of plate filter press.

Inactive Publication Date: 2004-03-03
UNIV OF SCI & TECH BEIJING
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  • Abstract
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  • Application Information

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Problems solved by technology

At present, the treatment of sludge in my country mostly adopts the methods of concentration, dehydration, pressing with a plate filter press, drying, transporting to other places for reprocessing, and producing biogas. The plate filter press used in this method is expensive and easy to use. This method is bad, and the capital construction and operation costs of this method are very high, so that the sludge treatment cost accounts for a large proportion in the sewage treatment plant, which is not commensurate with the sewage treatment cost; and as the most promising land use system, often due to sludge Contains a large amount of heavy metals, pathogenic bacteria and refractory organic matter, which greatly restricts its utilization

Method used

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  • Sludge treatment method and its artificial wetland treatment pool
  • Sludge treatment method and its artificial wetland treatment pool
  • Sludge treatment method and its artificial wetland treatment pool

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Embodiment Construction

[0021] For a small sewage treatment plant that processes 2,000 tons of domestic sewage per day, it produces 10 tons of sludge per day (with a moisture content of more than 99%). The unconcentrated and dehydrated sludge from the sewage plant flows into the biological reaction tank with the bacterial solution of Thiobacillus as the dominant species to remove part of the heavy metals in the sludge; then the reacted sludge flows into the treatment tank body and The sludge artificial wetland treatment pool composed of artificial matrix, according to the amount of sludge, the pool body is designed to be 200m 2 A square rectangular pool, the ratio of the length to width of the pool body is 3:1, the bottom surface of the pool body is a slope bottom surface with a slope of 0.03, and a layer of artificial substrate is laid on the bottom surface of the pool body. The artificial substrate is crushed stone with a thickness of 0.5 meters, and the artificial matrix is ​​divided into two laye...

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Abstract

A method for treating mud by artificial nunja as treating pool features that said artificial nunja has a slope bottom made of artifial matrix and the emerging plant is planted in the artificial nunja formed by loading the mud in the treating pool. The cooperation of plant, mud and microbes can decompose the organic substances, N, P, heavy metals and pathogenic bacteria in mud.

Description

technical field [0001] The invention relates to a sludge treatment method of a sewage treatment plant and an artificial wetland treatment pool thereof, belonging to the field of sewage and sludge treatment. Background technique [0002] In my country, the amount of domestic sewage and industrial wastewater treatment is increasing, and the resulting sewage and sludge are also increasing. According to my country's 2010 long-term goal plan, my country's urban sewage treatment rate will increase to 25% by the end of this century, and the sludge generated accordingly will inevitably become larger and larger. At present, my country's annual output of sludge is nearly 300,000 tons (in terms of dry matter), and more than 50% of the sludge is directly discharged without any treatment. At present, the treatment of sludge in our country mostly adopts the methods of concentration, dehydration, pressing with a plate filter press, drying, transporting to other places for reprocessing, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/02
Inventor 汪莉宋存义常冠钦孙文亮钱大益
Owner UNIV OF SCI & TECH BEIJING
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