Biological treatment system for urban domestic sludge

A technology for municipal domestic sludge and biological treatment, which is applied in biological sludge treatment, biological organic part treatment, water/sludge/sewage treatment, etc., to achieve the effects of environmental protection, water content reduction and retention time extension

CN107793004APending Publication Date: 2018-03-13庄云棠
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2018-03-13

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Abstract

The invention discloses a biological treatment system for urban domestic sludge. The biological treatment system comprises a sludge breaker, a leaf crusher, a stirrer, a loader, a container-type aerobic biological fermenter, a fan, a biological filter, a water storage tank, a leachate treatment device, a PLC (programmable logic control) center, an oxygen sensor, a temperature sensor and a signal cable. The container-type aerobic biological fermenter comprises a shell and an interior thereof, the shell is of an interlayer structure, the interior is provided with an isolation bed and a materialcolumn, and a first aerator pipeline, a second aerator pipeline, a third aerator pipeline, the oxygen sensor and the temperature sensor are distributed on the material column. According to the system,dewatered domestic sludge serves as a main material, greening abandoned leaves serve as auxiliary materials, aerobic fermentation conditions are sufficiently met by reasonable collocation of mechanical equipment and scientific design of key links, completely decomposed standards are met, and fermented products can be successfully applied to garden greening.
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Description

technical field

[0001] The invention relates to the field of environmental protection equipment for solid waste treatment, in particular to a biological treatment system for urban domestic sludge. Background technique

[0002] Municipal domestic sludge refers to the sediment produced in the sewage treatment plant in the process of purifying urban domestic sewage. It is a solid-liquid mixture. Municipal domestic sludge contains high organic matter, nitrogen and phosphorus, and has a relatively strong fertilizer supply capacity, so it is a good source of organic fertilizer.

[0003] At present, the sludge treatment and disposal technologies at home and abroad are mainly traditional sanitary landfill, incineration, building material utilization and farmland utilization. Sludge sanitary landfill is already a relatively mature sludge disposal technology. The advantage of this technology is less investment, large capacity, and quick results. However, the sludge landfill technol...

Examples

Embodiment Construction

[0032] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0033] see figure 1 , figure 2 , image 3 , Figure 4. A biological treatment system for municipal domestic sludge, including a sludge crusher, a leaf pulverizer, a mixer, a loader, a container-type aerobic biological fermenter, a fan, a biological filter 3, a water storage tank 9, and a leachate treatment device 18. PLC control center 21, oxygen sensor 12, temperature sensor 13, signal cable 20. The sludge crusher adopts a double-shaft shear crusher. The leaf shredder adopts hammer mill. . The mixer is used to fully mix the sludge crushed by the sludge crusher with the leaves crushed by the leaf crusher. Practice has proved that the structure of the concrete mixer is very suitable for the mixing of crushed mud and crushed leaves, and should be preferred. The loader is used to transfer the mixture of sludge and leaves to the containerized aerobic bioferment...