Preparation method and device of organic soil conditioner

A preparation device, a technology of organic soil, applied in the field of agricultural soil and fertilizer, to achieve the effect of fertilizing soil fertility and promoting plant growth
CN101921595BInactive Publication Date: 2014-01-01张大伟 +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
张大伟
Publication Date
2014-01-01
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a preparation method of an organic soil conditioner. The method comprises the following steps: placing sludge in an intermittently rotary preparation device to dewater at 200-300 DEG C, then conveying the obtained sludge in the intermittently rotary preparation device to dewater at 200-300 DEG C, performing dry distillation at 700-850 DEG C when the volume of the dewatered sludge accounts for 25-35% of that of the intermittently rotary preparation device; cooling the product of dry distillation to below 100 DEG C, and discharging. By using the method of the invention, harmful bacteria, parasite eggs, viruses and the like in sludge can be killed under a high temperature; and the obtained sludge contains carbon element and organic nutrients such as nitrogen, phosphorus pentoxide and potassium oxide and has the functions of improving soil, increasing soil fertility and promoting plant growth.
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Description

technical field

[0001] The invention belongs to the field of agricultural soil and fertilizer, and in particular relates to a preparation method of an organic soil improver.

[0002] The invention also relates to a device for carrying out the method described above. Background technique

[0003] Sewage treatment plants of cities or enterprises produce a certain amount of sludge during the process of sewage treatment; a certain amount of sludge or / and algal organisms are also produced during the dredging process of rivers and lakes; the composition of these sludges is very complex , is a collection of bacteria gelatin formed by various microorganisms or / and organic matter and inorganic matter. In addition to containing a large amount of water (up to 99%), it also contains pathogenic microorganisms and parasite eggs. The organic content in the sludge is high, it is easy to be corrupted, and it produces a bad smell. A large amount of untreated sludge is piled up and discharged...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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