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Urban waste mud and organic waste combined resource utilization method and application

A technology of organic waste and urban waste, which is applied in the field of resource utilization of solid waste, can solve the problems of incapability of resource utilization and direct agricultural use, and achieve good application results

Pending Publication Date: 2020-11-06
ZHEJIANG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the limitation of its own characteristics, single-type waste often cannot be used as a resource. For example, food waste cannot be directly used in agriculture due to its high salt and high fat characteristics.

Method used

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  • Urban waste mud and organic waste combined resource utilization method and application
  • Urban waste mud and organic waste combined resource utilization method and application
  • Urban waste mud and organic waste combined resource utilization method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Mix the dehydrated bottom mud of river reservoirs and ponds in urban waste mud with the traditional Chinese medicine residue of organic waste in a volume ratio of 4:1, and then use a mobile turner to stir and break the two, keeping the moisture content at 70 %, using aerobic fermentation technology for composting, turn the compost every 7 days in the heating stage, and turn it every 2 days in the high temperature stage (above 60°C), and transport it directly to the landscaping project after 3 weeks of fermentation Construction site, used as planting soil. Compared with yellow soil commonly used in landscaping projects, the nutrient content of the planting soil is significantly improved, and the organic matter content of nitrogen, phosphorus and potassium is increased by more than 80%. The growth, leaf color, and biomass of the planted landscaping plants are significantly better than those planted in yellow soil. Such as figure 1 shown.

Embodiment 2

[0022] Mix the construction dregs in the urban waste mud with the pretreated meal waste in the organic waste according to the volume ratio of 5:1, and then use a mobile turner to mix the two evenly and crush them, keeping the moisture content at 75 %, using aerobic fermentation technology for composting, turn the compost once every 8 days during the heating stage, and turn the compost once every 3 days during the high temperature stage (above 60°C). After 3 weeks of fermentation, add 0.5 kg of urea to each side evenly , transport it directly to the landscaping project construction site, and use it as planting soil. Compared with yellow soil commonly used in landscaping projects, the nutrient content of the planting soil is significantly improved, and the organic matter content of nitrogen, phosphorus and potassium is increased by more than 50%. The growth, leaf color, and biomass of the planted landscaping plants are significantly better than those planted in yellow soil. Suc...

Embodiment 3

[0024] Mix the construction dregs in the urban waste mud, the dehydrated river reservoir pond bottom mud and the pretreated meal waste in the organic waste according to the volume ratio of 2:3:1, and then use a mobile turner to throw The two are stirred evenly and broken, and the moisture content is kept at 70%. The aerobic fermentation technology is used for composting, and the compost is turned every 7 days in the heating stage, and turned every 2 days in the high temperature stage (higher than 60°C). Fermentation 3 After one week, 1.0 kg of urea was evenly added to each side, and it was directly transported to the landscaping project construction site for use as planting soil. Compared with yellow soil commonly used in landscaping projects, the nutrient content of the planting soil is significantly improved, and the organic matter content of nitrogen, phosphorus and potassium is increased by more than 60%. The growth, leaf color, and biomass of the planted landscaping plant...

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Abstract

The invention provides an urban waste mud and organic waste combined resource utilization method and application. Solid wastes are divided into two types: urban waste mud and organic wastes. Accordingto physical and chemical properties of the urban waste mud and the organic wastes, one or more of the urban waste mud and one or more of the organic wastes are mixed, blended, turned and aerated, anaerobic or anaerobic fermentation technology is applied, an organic and inorganic formula fertilizer is added for conditioning product characteristics after combined fermentation of the urban waste mud and the organic wastes, and planting substitute soil for landscaping engineering or ecological restoration engineering is produced. The method and application thereof break through technical bottleneck that single waste cannot be recycled due to limitation of physicochemical properties of the single waste. The planting substitute soil serving as landscaping engineering or ecological restorationengineering is produced and applied to landscaping engineering, has good application effect, and effectively meets the requirement for planting soil of the landscaping engineering.

Description

technical field [0001] The invention belongs to the field of resource utilization of solid waste, and in particular relates to a combined resource utilization method and application of urban waste sludge and organic waste. Background technique [0002] With the development of social economy and the advancement of urbanization, a huge amount of solid waste is produced along with people's production and life. Including urban waste sludge, such as river, lake, reservoir and pond dredging sediment, urban sewage sludge, construction debris, dried construction mud, construction waste, etc.; organic waste, such as traditional Chinese medicine residue, straw, mushroom residue, rush grass clippings, garden Clippings, septic tank sediment, food waste, etc. At present, the proportion of solid waste resource utilization in my country is extremely low, and landfill and incineration are still the main disposal methods of solid waste. Therefore, it is of great significance to improve the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G24/00A01G24/12A01G24/10A01G24/22A01G24/25A01G24/27A01G24/20C05F15/00C05F17/00C05G1/00
CPCA01G24/00A01G24/12A01G24/10A01G24/22A01G24/25A01G24/27A01G24/20C05C9/00C05F7/00C05F17/00Y02W30/40
Inventor 吴良欢胡浩南王忠强
Owner ZHEJIANG UNIV
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