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Method and device for preparing ecological cultivation substrate from urban waste

A cultivation substrate and waste technology, which is applied in the field of urban waste recycling and preparation of new ecological cultivation substrates, can solve problems such as environmental pollution and short fermentation cycle, and achieve shortened fermentation time, short required time, and energy saving in the production process Effect

Active Publication Date: 2018-01-16
杨健
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The method has a short fermentation period, can be produced continuously, can prevent odor pollution, and can solve environmental pollution problems including urban domestic sludge and garden waste, and the organic cultivation substrate produced can be used as cultivation soil for landscaping, flower planting, etc.

Method used

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  • Method and device for preparing ecological cultivation substrate from urban waste
  • Method and device for preparing ecological cultivation substrate from urban waste

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Start the steam generator 8, open the outlet valve of the steam generator 8 and the inlet valve of the steam buffer tank 7. Simultaneously the garden waste that contains the tree branch pruning thing that water content is 10% joins in the garden waste storage tank 1, and the water content of municipal domestic sludge that water content is 96% is reduced to 90% after being dried, and then cut Add to the sludge storage tank 2 after cutting. Open the discharge valve of garden waste storage tank 1, make garden waste enter in the crusher 3, its particle diameter after crushing is 3cm. Open the valves of the crusher 3 and the sludge storage tank 2, transport the material to the mixing tank 4 according to the mass ratio of urban domestic sludge and garden waste mixed at 1:0.3, and mix the mixed material for 5 minutes. Delivered to the distribution trough 6 by the auger conveyor 5.

[0047] The distribution trough 6 distributes materials to each steam explosion tank in turn, ...

Embodiment 2

[0050] Start the steam generator 8, open the outlet valve of the steam generator 8 and the inlet valve of the steam buffer tank 7. At the same time, the garden waste containing plant litter and branch clippings with a moisture content of 15% is added to the garden waste storage tank 1, and the urban domestic sludge with a moisture content of 95% is dried and the moisture content is reduced to 85%. , then join in the sludge storage tank 2 after shearing, open the discharge valve of the garden waste storage tank 1, make the garden waste enter in the crusher 3, its particle diameter after crushing is 2cm. Open the valves of the crusher 3 and the sludge storage tank 2, and make the material enter the mixing tank 4 according to the mass ratio of municipal domestic sludge and garden waste mixed at 1:2. After stirring and mixing for 5 minutes, pass the mixed material through The auger conveyor 5 is delivered to the distribution chute 6.

[0051] The distributing chute 6 distributes ...

Embodiment 3

[0054] Start the steam generator 8, open the outlet valve of the steam generator 8 and the inlet valve of the steam buffer tank 7. At the same time, lawn clippings, weeds, seeds or residual garden wastes with a water content of 35% are added to the garden waste storage tank 1, and the water content of municipal domestic sludge with a water content of 95% is reduced to 60% after being dried. %, add in the sludge storage tank 2 after shearing again, open the discharge valve of the garden waste storage tank 1, make the garden waste enter in the crusher 3, its particle diameter after crushing is 2cm. Open the valve of the crusher 3 and the sludge storage tank 2, and make the material enter the mixing tank 4 according to the mass ratio of urban domestic sludge and garden waste mixed at 1:0.8, and after mixing for 5 minutes, pass the mixed material through The auger conveyor 5 is delivered to the distribution chute 6.

[0055]The distributing chute 6 distributes materials to each s...

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Abstract

The invention relates to a municipal waste recycling technology and aims to provide a method and a device for preparing a novel ecological culture medium from municipal waste. The method comprises the following steps: mixing garden waste with municipal sewage sludge to obtain a raw material mixture, wherein the moisture content of the dried municipal sewage sludge is 60%-90%; blasting the municipal sewage sludge with post steam, adding an inoculant into the processed material to perform aerobic fermentation; screening, drying and pelletizing the fermented material to obtain the ecological culture medium. The method has the beneficial effects that the time required for a fermentation process is short, the fermentation efficiency is high, the production process is energy-saving, and various pathogenic bacteria, parasitic ovum and the like in the raw material can be completely killed due to high-temperature high-process treatment, so that a harmless environment is realized, and continuous and automatic production can be realized. Moreover, secondary pollution can be prevented, the production efficiency is improved, and harmlessness, reduction and recycling of municipal sewage sludge and garden waste can be truly realized.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and in particular relates to an urban waste recycling technology, in particular to a method and a device for preparing a new type of ecological cultivation substrate by using urban waste. Background technique [0002] In the process of my country's economic and urbanization development, the domestic water consumption of urban residents has increased sharply and a large amount of sludge has been produced. At the same time, the amount of garden waste in urban gardens and green areas has also increased. Both of them have become the main source of urban solid waste. One of the main components. These two types of solid organic waste are usually disposed of by landfill or incineration, which not only increases the government's cost of waste disposal, but also wastes valuable land resources and pollutes the environment. At the same time, urban domestic sludge and garden wastes contain a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05F17/00C05F15/00
CPCY02W30/40
Inventor 杨健范刚王奕沈建
Owner 杨健
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