Mining rehabilitation nutrient soil production method using organic waste and sludge

A technology of organic waste and nutrient soil, applied in the preparation of organic fertilizers, botany equipment and methods, organic fertilizers, etc., can solve the problems of adverse health effects of operators, environmental pollution, long stacking time, etc., to ensure high efficiency Performance and stability, avoid secondary pollution, improve the effect of degradation rate

Inactive Publication Date: 2017-11-17
中林山水(北京)生态科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The method of composting mainly adopts open-air or semi-enclosed workshops for processing, and its disadvantages are: 1. It occupies a large area; 2. The hydrogen sulfide, ammonia and other odorous gases produced by composting cause serious pollution to the environment; 3. The treatment cycle is long, It usually takes 15-28 days; 4. The temperature control is unstable; 5. It is easy to have adverse effects on the health of operators
The main disadvantages of sludge incineration are: 1. The sludge i

Method used

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  • Mining rehabilitation nutrient soil production method using organic waste and sludge
  • Mining rehabilitation nutrient soil production method using organic waste and sludge
  • Mining rehabilitation nutrient soil production method using organic waste and sludge

Examples

Experimental program
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Example Embodiment

[0050] Example 1. Preparation of inoculum

[0051] Bacillus subtilis, lactic acid bacteria, yeast, Bacillus megaterium, Bacillus mohewei, Bacillus pumilus are proportioned according to 4-8:3-7:2-7:4-5:9-11:10-20, details as follows:

[0052] Cultivate Bacillus subtilis alone for 3-5 days under sterile conditions at 37°C until the number of cells per milliliter reaches 10 9 ;

[0053] Cultivate lactic acid bacteria alone for 2-3 days under sterile conditions at 37°C, until the number of cells per milliliter reaches 10 9 ;

[0054] Incubate yeast alone for 2-3 days under sterile conditions at 37°C, until the number of cells per milliliter reaches 10 9 ;

[0055] Cultivate Bacillus megaterium alone for 3-4 days under sterile conditions at 37°C until the number of cells per milliliter reaches 10 9 ;

[0056] Cultivate Bacillus mohewei individually for 3-5 days under sterile conditions at 37°C, until the number of cells per milliliter reaches 10 9 ;

[0057] Cultivate Baci...

Example Embodiment

[0065] Example 2

[0066] 1. Organic waste treatment

[0067] a) The municipal solid waste organic matter after classification and collection enters the pulverization process, and pulverizes some substances with large particle size. Generally, after two stages of pulverization, the first stage is pulverized to a particle size of 3-5cm; the second stage pulverization For the particle size of 1-1.5cm;

[0068] b) Put the crushed organic waste into the fermentation box, add zeolite or bran and mix well. The main function of zeolite or bran is to provide a space between materials to promote air flow between materials;

[0069] c) The body starts to automatically stir, stirring once every 10 minutes, stirring for 10 minutes each time, heating the material while stirring, adding 1 liter of bacterial agent per ton of organic waste and supplying oxygen to carry out aerobic fermentation; control the fermentation temperature to be 66℃; the method of adding the bacterial agent for 3 se...

Example Embodiment

[0085] Example 3

[0086] The steps are the same as in Example 2, except that:

[0087] 1. Organic waste treatment

[0088] The fermentation temperature was controlled to be 55°C, and the mixture was stirred at intervals of 15 minutes for 10 minutes, and 0.3 liter of bacterial agent was added per ton of organic waste, and the organic liquid fertilizer was obtained after 48 hours of fermentation.

[0089] 2. Sludge pretreatment

[0090] Put 3 kg of quicklime per ton of sludge, put zeolite and bran with a weight of 30% of the dewatered sludge in the first-stage mixing tank, and put a deodorant powder with a weight of 10% of the sludge in the mixing process.

[0091] 3. Mixing of two materials

[0092] Mix the organic liquid fertilizer and sludge in a mass ratio of 0.2:1, adjust the pH value to 7 after mixing, and use bran or straw to adjust the moisture content of the material to 40%, and the input ratio is 1 ton of mixed material input 0.6 tons of bran or 0.4 tons of comminut...

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Abstract

The invention relates to the field of bio-organic fertilizer, in particular to a mining rehabilitation nutrient soil production method using organic waste and sludge. The method comprises the following steps that 1, the organic waste is collected and crashed, a supporting substance is added for evenly mixing, stirring is conducted in a batch mode, a microbial agent is put into the material, oxygen is provided, and aerobic fermentation is conducted to obtain organic liquid fertilizer; 2, dehydrated sludge is collected, quicklime, deodorant and the supporting substance are put into the sludge for evenly mixing; 3, the organic liquid fertilizer and the sludge are mixed evenly, the PH value is adjusted to 6.5-7, the water content is adjusted to 35-40%, and a fermentation substrate is obtained; 4, high-temperature aerobic fermentation is conducted on the fermentation substrate with the maintained fermentation temperature of 110-120 DEG C for 5-10 hours, sorting is conducted to obtain the mining rehabilitation nutrient soil. By means of the method, the nutrient soil with a low content of heavy metals, long fertilizer efficiency and no secondary pollution is obtained, fast, stable, efficient and harmless treatment of the organic waste and the sludge is achieved.

Description

technical field [0001] The invention relates to the field of bio-organic fertilizers, in particular to a method for producing nutrient soil for mine restoration by using organic waste and sludge. Background technique [0002] With the acceleration of urbanization in my country and the increase of urban population, the discharge of urban domestic sewage and organic waste is increasing, which is characterized by unpleasant odor, high water content, high corruption, fast corruption, and high complexity. How to safely and effectively treat sludge and organic waste has become an urgent problem to be solved. [0003] At present, composting or incineration are mainly used for disposal. The method of composting mainly adopts open-air or semi-enclosed workshops for processing, and its disadvantages are: 1. It occupies a large area; 2. The hydrogen sulfide, ammonia and other odorous gases produced by composting cause serious pollution to the environment; 3. The treatment cycle is lon...

Claims

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Application Information

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IPC IPC(8): A01G9/10C05F15/00C05F17/00
CPCA01G24/00C05F7/00C05F9/00C05F17/00C05F11/08C05F9/04Y02W30/40
Inventor 李楠任瑞霞
Owner 中林山水(北京)生态科技有限公司
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