Sludge treatment method of artificial wetland treatment pool
A technology for artificial wetland and sludge treatment, which is applied in the field of sludge treatment and sewage, which can solve the problems of limited utilization, disproportionate sewage treatment costs, perishability, etc., and achieve the effect of convenient management
Inactive Publication Date: 2012-05-30
DALIAN CHUANGDA TECH TRADE MARKET
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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
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[0023] For a small-scale sewage treatment plant that processes 2,000 tons of domestic sewage, 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 constructed wetland treatment pool composed of artificial matrix is designed to be 200m according to the amount of sludge. For a square rectangular pool, the ratio of the length to width of the pool body is 3:1, and the bottom surface of the pool body has a slope of O. 03 slopes
[0024] On the bottom surface, a layer of artificial matrix is laid on the bottom surface of the pool body. The artificial matrix is gravel with a thickness of 0.5 meters, and the artificial matrix is divided into two layers. ...
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The invention discloses a sludge treatment method of an artificial wetland treatment pool, belonging to the field of sewage and sludge treatment. The sludge treatment method comprises the steps of: forming an artificial wetland by using an artificial wetland treatment pool which is internally provided with artificial substrates and has a slope at the bottom surface and sludge to be treated; planting emerged plants in the wetland; and decomposing and removing organics, N, P, heavy metals and pathogenic bacteria in the sludge by utilizing synergistic effect of plants, soil and microorganisms so as to enable the sludge treatment to reach the purpose of volume reduction, stabilization, harmlessness and resource recovery. The method can greatly save infrastructure cost and operation cost of the sewage treatment plant and realize soil formation of the sludge.
Description
technical field [0001] The invention relates to a sludge treatment method of an artificial wetland treatment pool, 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, and producing biogas. The plate filter ...
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Inventor 陈洋
Owner DALIAN CHUANGDA TECH TRADE MARKET