Kitchen waste treatment method

A technology of food waste and treatment methods, which is applied in the direction of sedimentation treatment, special treatment targets, water/sewage treatment, etc., and can solve the problems of large power consumption in high-temperature composting treatment, large investment in biogas power generation treatment projects, and high salt and oil content in products. , to achieve excellent coagulation treatment effect, improve comprehensive management ability, and strong biological adhesion

Active Publication Date: 2021-07-27
HANGZHOU NAXI ECOLOGICAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Traditional food waste treatment methods have obvious disadvantages, such as sanitary landfill treatment that pollutes soil and groundwater, resulting in waste of available resources; incineration treatment due to the high water content of perishable garbage, incineration can easily produce air pollution such as dioxins; high-temperature composting The power consumption of the treatment is huge, and the product contains too much salt and oil, making it difficult to recycle; the biogas power generation treatment project has a large investment and is difficult to operate stably

Method used

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Experimental program
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Effect test

Embodiment 1

[0088] Embodiment 1: a kind of kitchen waste processing method:

[0089] This embodiment provides a kind of food waste processing method, its flow chart is as attached figure 1 shown, including:

[0090] Step 1. Sorting and crushing: Preliminary sorting of kitchen waste, the sorted large foreign matter is transferred to incineration or landfill, and the remaining matter is crushed;

[0091] Step 2. Microbial fermentation and decomposition: add polyurethane filler and composite microbial degradation bacteria to the kitchen waste, stir and ferment, separate and transport large-diameter impurities for incineration or landfill;

[0092] Step 3. Oil-water separation: The landfill leachate produced by microbial fermentation and decomposition is transported to the oil-water separation system for separation, and the separated oil phase is recycled and reused;

[0093] Step 4. Aeration and air flotation separation: use an air flotation machine to separate the leachate separated from ...

Embodiment 2

[0107] Embodiment 2: another kind of food waste processing method:

[0108] This embodiment provides another method for treating food waste, the steps of which are basically the same as in Embodiment 1, the difference is that in this embodiment, in the aeration and air flotation separation process, the flocculant includes: a weight ratio of 1 : 15:3 polyacrylamide, activated carbon, sodium palmitate; that is, the use of activated carbon instead of arbutin modified activated carbon;

[0109] The flocculant is prepared by the following method:

[0110] Mix polyacrylamide, activated carbon, and sodium palmitate into 90g of deionized water, raise the temperature to 70°C at a rate of 3°C / min, stir at 400r / min to make it fully mixed, and naturally cool to room temperature and place it for 6h; Then heat up to 90°C at a rate of 8°C / min and stir thoroughly until the water content of the mixture is lower than 5%, and cool naturally to obtain a flocculant.

Embodiment 3

[0111] Embodiment 3: another kind of food waste processing method:

[0112] This embodiment provides another method for treating kitchen waste, the steps of which are basically the same as in Embodiment 1, the difference is that in this embodiment, in the aeration and air flotation separation process, the arbutin in the flocculant is modified The amount of activated carbon and arbutin added during the preparation of activated carbon was 10 g and 1.55 g, respectively.

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Abstract

The invention discloses a kitchen waste treatment method. The kitchen waste treatment method comprises the steps of kitchen waste sorting and crushing, microbial fermentation decomposition, oil-water separation, aeration air flotation separation, hydrolysis-anaerobic fermentation, A/O tank treatment, hydrolysis-MBR treatment and disinfection treatment. The effluent quality reaches the discharge or reuse standard, the whole treatment process is carried out at normal temperature, high-temperature drying is not needed, the defects that in the prior art, kitchen waste treatment needs high-temperature treatment, energy consumption is high, and the decrement rate is low are overcome, kitchen waste treatment in the normal-temperature aerobic environment is achieved, energy consumption is low, the decrement rate reaches up to 99%, final products obtained after organic matter decomposition are carbon dioxide and water, no secondary pollutant is generated, environmental pollution is reduced, and the environmental comprehensive treatment capability of kitchen waste treatment is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of kitchen waste treatment, and in particular relates to a kitchen waste treatment method. Background technique [0002] With the rapid development of my country's economy and the gradual improvement of people's living standards, various catering service industries have gradually increased, and kitchen waste has increased. Food waste refers to the food waste and food waste produced by restaurants, hotels, various restaurants, government agencies, enterprises, institutions, schools and other public canteens, households, farmers' markets, and food processing enterprises. of organic waste. After being piled up, food waste will deteriorate, which not only emits rancid smell, but also causes waste water, waste oil, etc. to pollute the environment. After food waste decays, it will produce a large amount of harmful substances, including various bacteria that are harmful to humans and animals. , Food waste has bec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09B3/00C12N11/089C12N11/093C12N11/10C02F9/14C02F103/06
CPCB09B3/00C12N11/093C12N11/089C12N11/10C02F9/00C02F1/40C02F1/24C02F3/28C02F3/2846C02F1/66C02F2209/06C02F3/30C02F3/2853C02F3/1268C02F1/76C02F2303/04C02F1/56C02F1/5281C02F2001/007C02F2103/06C02F1/54
Inventor 徐坚麟付源张素
Owner HANGZHOU NAXI ECOLOGICAL TECH CO LTD
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