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Refined fertilizer produced from sludge and producing method thereof

A technology of organic fertilizer and sludge, which is applied in the field of preparation of refined organic fertilizer, can solve the problems affecting the rapid reproduction of compost microorganisms, slow humification speed, ammonia volatilization loss, etc., to achieve good health, less nutrient loss, and pollution small effect

Inactive Publication Date: 2008-02-20
广东省农业科学院土壤肥料研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

One is to kill pathogenic microorganisms and parasites (eggs), and adjust the pH value to be equal to or greater than 12. Under alkaline conditions, it is easy to cause ammonia volatilization loss, produce stench, and pollute the environment
The second is that although it can effectively kill pathogenic microorganisms and parasites (eggs) in a strong alkaline environment, it also affects the rapid reproduction of compost microorganisms, resulting in slow humification, long composting cycles, and low treatment efficiency.

Method used

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  • Refined fertilizer produced from sludge and producing method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Concrete steps and process conditions of the preparation process of the present invention are as follows:

[0049] (1) Mix raw sludge with a moisture content of 78% and dried sludge with a moisture content of 14% at a volume ratio of 1:2.5, so that they are evenly mixed into mixed sludge with a moisture content of 32%.

[0050](2) Select 5000kg (60%, mass percentage, the same below) of the above-mentioned mixed sludge and 1750kg (21%) organic conditioner (60% mushroom dregs, 25% crop straw, 15% cow dung), 667kg (8% ) inorganic conditioner (fly ash 75%, phosphate rock powder 25%), 800kg (9.6%) decomposing accelerator (yeast waste liquid 40%, distiller's grains 50%, sugar refining waste liquid 8%, granulated sugar 2%) and 33kg (0.4%) Mix the microbial inoculant, enzyme and quick rot agent evenly. The water content is 40%, the C / N is 29:1, the organic matter content is 52%, and the pH value is about 7.

[0051] (3) The above-mentioned compost materials are piled up, the ...

Embodiment 2

[0055] Concrete steps and process conditions of the preparation process of the present invention are as follows:

[0056] (1) Mix the raw sludge with a moisture content of 80% and the dried sludge with a moisture content of 10% in a volume ratio of 1:1, so that they are uniformly mixed to form a mixed sludge with a moisture content of 45%.

[0057] (2) select 10000kg (69%) above-mentioned mixed sludge and 2899kg (20%) organic conditioner (litter 70%, soy sauce residue 15%, humic acid 15%), 725kg (5%) inorganic conditioner ( Fly ash 50%, phosphate rock powder 50%), 609kg (4.2%) decomposing accelerator (yeast waste liquid 60%, distiller's grains 20%, sugar refining waste liquid 8%, granulated sugar 1%, monosodium glutamate waste liquid 11%) and 87kg (0.6%) microbial inoculant VT-1000 bacterial agent was mixed evenly. The water content is 43%, the C / N is 26:1, the organic matter content is 45%, and the pH value is about 7.

[0058] (3) The above-mentioned compost materials are ...

Embodiment 3

[0062] Concrete steps and process conditions of the preparation process of the present invention are as follows:

[0063] (1) Mix the raw sludge with a moisture content of 80% and the dried sludge with a moisture content of 15% in a volume ratio of 1:3, so that they are uniformly mixed to form a mixed sludge with a moisture content of 31%.

[0064] (2) select 10000kg (60%) above-mentioned mixed sludge and 3333kg (20%) organic conditioner (litter 70%, soy sauce residue 15%, humic acid 15%), 2250kg (13.5%) inorganic conditioner ( Fly ash 50%, phosphate rock powder 50%), 833kg (5%) decomposing accelerator (yeast waste liquid 60%, distiller's grains 21%, sugar refining waste liquid 8%, granulated sugar 1%, monosodium glutamate waste liquid 10%) and 83kg (0.5%) of microbial inoculants (50% of enzyme bacteria quick-rot agent, 50% of VT-1000 bacterial agent) were mixed evenly. The water content is 43%, the C / N is 25:1, the organic matter content is 46%, and the pH value is about 7. ...

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Abstract

The invention discloses a refined organic fertilizer and preparing method of sludge, which comprises the following steps: compounding piled raw materials; piling; turning the pile; ripening; drying in the hot cavity; sieving to obtain the product. The refined organic fertilizer contains composite sludge, organic amendment, inorganic amendment, matured accelerant, microbe grafting agent and adsorbant, which are blended completely according to certain proportion, wherein these materials are fermented for the second time, which are prepared into refined organic fertilizer.

Description

technical field [0001] The invention relates to the technical field of municipal sludge treatment and fertilizer preparation, in particular to a method for preparing refined organic fertilizer prepared from sludge. Background technique [0002] Municipal sludge is the sediment produced by sewage treatment plants after various levels of treatment to purify sewage. Sludge is rich in N, P, K, a variety of micronutrients and organic matter, and is a natural organic fertilizer. However, because it contains various toxic and harmful pollutants such as pathogenic bacteria, parasites (eggs) and heavy metals, there are great risks of hygiene, safety, environmental pollution and other risks in direct application, and resource utilization is restricted. Therefore, how to effectively make municipal sludge harmless, reduce its volume and make resource utilization, turn waste into wealth, and realize resource recycling has become a hot and difficult point of current research. [0003] A...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05F7/00C05F17/00
CPCY02A40/20Y02W30/40
Inventor 徐培智张发宝解开治陈建生杨少海唐拴虎黄旭
Owner 广东省农业科学院土壤肥料研究所
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