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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 itself has a high water content, and its demand for combustion-supporting substances (coal, fuel oil and other flammable substances) will cause energy consumption; 2. The secondary combustion products Low secondary use value; 3. It takes a long time to stack before entering the site for combustion, which generally takes 7-10 days; 4. After incineration, ash and flying substances are easy to be produced, and the physical dust reduction, desulfurization and denitrification systems required are complex

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
Comparison scheme
Effect test

Embodiment 1

[0050] Embodiment 1. Preparation of bacterial agent

[0051] The proportion of Bacillus subtilis, lactic acid bacteria, yeast, Bacillus megaterium, Bacillus mohaiwei, and Bacillus pumilus is 4-8:3-7:2-7:4-5:9-11:10-20, details as follows:

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

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

[0054] Cultivate yeast separately for 2-3 days under sterile conditions at 37°C until the number of bacteria per ml reaches 10 9 ;

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

[0056] Cultivate Bacillus Mohaiwei separately under sterile conditions at 37°C for 3-5 days until the number of bacteria per ml reaches...

Embodiment 2

[0066] 1. Organic waste treatment

[0067] a) After sorting and collecting the organic matter of municipal solid waste, it enters the crushing link, and some substances with large particle sizes are crushed. Generally, it goes through two levels of crushing. The first level is crushed to a particle size of 3-5cm; the second level is crushed Particle size of 1-1.5cm;

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

[0069] c) The body starts to stir automatically, 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 for aerobic fermentation; control the fermentation temperature as 66°C; the method of adding the bacterial agent for 3 seconds per minute can be used to promote the un...

Embodiment 3

[0086] Step is the same as embodiment 2, and difference is:

[0087] 1. Organic waste treatment

[0088] Control the fermentation temperature at 55°C, stir for 10 minutes at intervals of 15 minutes, add 0.3 liter of bacterial agent per ton of organic waste, and obtain organic liquid fertilizer after 48 hours of fermentation.

[0089] 2. Sludge pretreatment

[0090] Put 3 kilograms of quicklime into every ton of sludge, put 30% of dewatered sludge weight zeolite and bran in the primary mixing tank, and put 10% sludge weight of deodorant powder into the mixing process.

[0091] 3. Mixing of two materials

[0092] Mix the organic liquid fertilizer and sludge according to the 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 0.6 for 1 ton of mixed material. 1 ton of bran or 0.4 ton of crushed straw.

[0093] 4. Compost fermentation

[0094] According to the air supply e...

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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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