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In-situ reduction method for kitchen wastes in residential communities

A kitchen waste reduction technology, applied in the direction of climate change adaptation, organic fertilizer, etc., can solve the problems of high operating cost, long process flow, and complicated operation, and achieve secondary degradation fermentation, high processing efficiency, and low energy consumption. consumption effect

Inactive Publication Date: 2012-10-24
东莞市环境科学研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there are many kitchen waste treatment methods on the market, but they generally encounter problems such as high operating costs and secondary pollution during the operation process.
For example, if anaerobic fermentation is used to treat kitchen waste, although biomass energy can be recovered, there are also disadvantages such as large investment, complicated operation, need for pretreatment, and long process flow.

Method used

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  • In-situ reduction method for kitchen wastes in residential communities
  • In-situ reduction method for kitchen wastes in residential communities
  • In-situ reduction method for kitchen wastes in residential communities

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Follow the steps below to dispose of kitchen waste:

[0029] (1) Take kitchen waste and landscaping waste at a volume ratio of 1:1 for composting and reduction treatment.

[0030] (2) Use the domesticated microbial active substrate as the microbial source for composting. The microbial active substrate is about 500 liters (L), and 40 liters (L) of kitchen waste is added every day. After 3 days, the temperature of the reaction system is raised to 50°C. After that, Start feeding normally.

[0031] (3) Feeding operation, put kitchen waste (360L) and landscaping waste (360L) into the closed composting reactor at a volume ratio of 1:1 every day and mix them evenly; adjust the moisture content of the mixed materials to 65%, the carbon-to-nitrogen ratio (C / N) was adjusted to 20:1, and the pH was adjusted to 6.5. In the operation process, after feeding the materials every day, manually start the rotary machine, let the reactor rotate for 0.5 hours (h), so that the materials ca...

Embodiment 2

[0042] Follow the steps below to dispose of kitchen waste:

[0043] (1) Take kitchen waste and landscaping waste at a volume ratio of 1:1.5 for composting reduction treatment;

[0044] (2) Use the domesticated microbial active substrate as the microbial source for composting. The microbial active substrate is about 500 liters (L), and 40 liters (L) of kitchen waste is added every day. After 3 days, the temperature of the reaction system is raised to 50°C. After that, Start feeding normally.

[0045] (3) Feeding operation, put kitchen waste (360L) and landscaping waste (540L) into the closed composting reactor at a volume ratio of 1:1.5 every day and mix them evenly; adjust the moisture content of the mixed materials to 60%, the carbon-to-nitrogen ratio (C / N) was adjusted to 25:1, and the pH was adjusted to 7.0. In the operation process, after feeding the materials every day, manually start the rotating machine, let the reactor rotate for 0.5h, so that the materials can be dyna...

Embodiment 3

[0056] Follow the steps below to dispose of kitchen waste:

[0057] (1) Take kitchen waste and landscaping waste at a volume ratio of 1:2 for composting reduction treatment;

[0058] (2) The domesticated microbial active substrate is used as the microbial source for composting. The microbial active substrate is about 500L, and 40L of kitchen waste is added every day. After 3 days, the temperature of the reaction system rises to 50°C, and then normal feeding begins.

[0059] (3) Feeding operation, put kitchen waste (360L) and landscaping waste (720L) into the closed composting reactor at a volume ratio of 1:2 every day and mix them evenly; adjust the moisture content of the mixed materials to 55%, the carbon-nitrogen ratio (C / N) was adjusted to 30:1, and the pH was adjusted to 7.5. In the operation process, after feeding the materials every day, manually start the rotating machine, let the reactor rotate for 0.5h, so that the materials can be dynamically stirred, and the venti...

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Abstract

The invention belongs to the technical field of waste recycling in the field of environment, and particularly relates to an in-situ reduction method for kitchen wastes in residential communities. The method includes the steps: using landscaping wastes in the residential communities as dry basis auxiliary materials, using kitchen wastes in the residential communities as treatment materials, and feeding the landscaping wastes and the kitchen wastes into a closed compost reactor for well mixing; conditioning the mixed materials; adding microbial activity matrix used as a microorganism source for starting of composting, and performing reduction treatment by means of intermittent aerobic dynamic compost; using a draft fan for air drafting of the closed compost reactor to realize ventilation and aeration of materials; and regularly feeding and discharging every day, sieving the discharged materials, and on-sieve materials rich in microorganism floras flows back to the compost reactor, so that continuous and efficient composting reduction of kitchen wastes is realized. The method has the advantages of low energy consumption, low cost, high treatment efficiency, small occupied area and evident reduction, waste recycling is realized, and domestic garbage treatment pressure can be relieved.

Description

technical field [0001] The invention belongs to the technical field of resource utilization of waste in the field of environment, and in particular relates to a method for treating kitchen waste in a residential area. Background technique [0002] At present, the city is facing the predicament of "garbage besieging the city". Domestic waste disposal is a major problem in urban management. These problems are mainly reflected in: first, the huge amount of domestic waste; second, the large proportion of perishable waste in domestic waste. Mixed waste has low calorific value and high water content; third, it is difficult to select a site for domestic waste incineration, and secondary pollution has attracted much attention; fourth, the landfill facilities for domestic waste are simple and occupy a large amount of land; fifth, the classified collection and classification of waste are not synchronized , urgently need to build supporting waste sorting and processing equipment. Unde...

Claims

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Application Information

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IPC IPC(8): C05F9/04
CPCY02A40/20
Inventor 曾彩明李美敏张国斐黄奂彦谭晓辉蔡勋江李娴
Owner 东莞市环境科学研究所
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