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Device and treatment method for digesting sludge with microorganism and microfauna

A treatment method and microbial technology, applied in the direction of biological sludge treatment, sludge treatment, etc., can solve the problem of reduced apparent yield of sludge, and achieve the effects of low cost, strong sewage discharge capacity, and low energy consumption

Inactive Publication Date: 2012-06-13
FUDAN UNIV
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  • Application Information

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Problems solved by technology

Increasing the energy (ATP) difference between catabolism and anabolism, the excess energy is released into the environment in the form of ineffective heat energy, resulting in a significant reduction in the apparent yield of sludge

Method used

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  • Device and treatment method for digesting sludge with microorganism and microfauna
  • Device and treatment method for digesting sludge with microorganism and microfauna

Examples

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Embodiment Construction

[0020] The device for digesting sludge by using microorganisms and micro-animals mainly has three parts, which are sewage degradation reactor, sludge digestion reactor and sedimentation tank. This device is used for sewage biological treatment to reduce the output of excess sludge. The reaction device is made of plexiglass, and its dimensions are: the sewage degradation reactor and the sludge digestion reactor are 40ⅹ60ⅹ30cm, and the sedimentation tank is 12ⅹ12ⅹ30cm in size. The amount is 0.35Kg (wet weight) / L.

[0021] The sewage is lifted from the sewage tank into the sewage degradation reactor inoculated with activated sludge, and after being aerated for 10 hours, it is discharged into the sludge digestion reactor, and then discharged into the sedimentation tank after being fed and digested by water worms. The water temperature in the volume reactor is 20°, the Ph value is 6-9, and the micro-animals and activated sludge in the sludge digestion reactor are supplied with oxyg...

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Abstract

The invention belongs to the technical field of environmental protection, and particularly relates to a device and a treatment method for digesting sludge with microorganism and microfauna. The device mainly comprises a sewage degradation reactor, a sludge digestion reactor, a sludge settling pond and the like. Microorganism combined packing and a plurality of deflection baffles are fixed in the sludge digestion reactor, and tubificidaes are inoculated on the surface of the combined packing. Sewage and sludge generated in the sewage degradation reactor enter the sludge digestion reactor, the tubificidaes in the reactor utilize the sludge as a growing substrate to maintain metabolism, and the deflection baffles are used for increasing flow paths, so that the sludge is reduced. The undigested sludge subjected to settling flows to the sewage degradation reactor or the sludge digestion reactor, the excess sludge is drained from a sludge discharging port, and water which is up to the standard by means of treatment is drained via the drainage port. The device has the advantages of low energy consumption, low cost, no secondary pollution and high pollution discharge capacity.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and in particular relates to a device and a treatment method for treating sludge using biological technology, in particular to a device and a treatment method for using microorganisms and micro-animals to digest sludge. Background technique [0002] At present, more than 90% of the municipal sewage treatment in the world adopts the activated sludge method. The large amount of excess sludge usually contains a certain amount of toxic and harmful substances and unstabilized organic matter. If it is not properly treated and disposed of, Will cause direct or potential pollution to the environment. Moreover, the treatment cost of these remaining sludge accounts for 40-60% of the operating cost of the sewage plant. Therefore, an effective way is to reduce the output of excess sludge from the source. [0003] Sludge reduction was proposed in the 1990s to minimize the biomass discharged...

Claims

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Application Information

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IPC IPC(8): C02F11/02
CPCY02W10/20
Inventor 郑正胡海龙张继彪王家齐周亮李继华
Owner FUDAN UNIV
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