Method for preparation of granular organic fertilizer by industrial floc sludge

A granular organic fertilizer and flocculent sludge technology, which is applied in the preparation of organic fertilizers, organic fertilizers, sewage/sludge fertilizers, etc., can solve the problems of large equipment investment, high energy consumption, unfavorable granulation technology progress and popularization and application, etc. problem, to achieve the effect of low operating cost, high degree of automation and low cost

Inactive Publication Date: 2010-07-28
RIZHAO JINHE BOYUAN BIOCHEM
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, in the post-treatment granulation process of organic fertilizers, the common processes are drum granulation, extrusion granulation, and disk granulation, and then the granular organic fertilizer is prepared through multiple processing procedures such as particle polishing and shaping machine shaping, which consumes a lot of energy. High, large equipment investment is not conducive to the progress and popularization and application of the entire granulation technology, so changing the existing granulation technology has become a major trend

Method used

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  • Method for preparation of granular organic fertilizer by industrial floc sludge
  • Method for preparation of granular organic fertilizer by industrial floc sludge

Examples

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Comparison scheme
Effect test

Embodiment 1

[0023] About 10t of flocculent sludge with a moisture content of 88% produced during the biochemical treatment of citric acid industrial organic wastewater is uniformly mixed with 1.3t of peanut bran, the main auxiliary material, and then sent to the solar panel solar greenhouse, which is set on the top and side of the greenhouse There is a strong heat-absorbing sun board, high temperature drying, stirring twice during the drying, the sludge moisture 57.2% after drying, adding 1.8‰ Aspergillus niger in the mixing zone, mixing and placing it in a shallow fermentation tank, the fermentation cycle is 7 days , The sludge thickness is 65cm, and the bottom is ventilated by Roots blower. When the temperature rises above 60 degrees, the stacker is used to turn the stack, and the temperature drops to about 50 degrees after the stack is turned. After the fermentation, the water content of the clinker is 33.62%. After screening, magnetic separation and aging, the bentonite and high-concent...

Embodiment 2

[0025] After mixing about 20t of flocculent sludge with 87.2% moisture content and 2.6t of corn stalks as an auxiliary material during the biochemical treatment of citric acid industrial organic wastewater, the forklift is put into the shed for high-temperature drying, stirring 3 times during the period, and the sludge after drying. With a moisture content of 56.6%, add 2‰ strains in the mixing zone, remix 0.5t of fermented clinker in Example 1, and mix again, and the moisture content is 53.9%. The mixed raw materials are mixed into the shallow fermentation tank with a forklift. The fermentation cycle is 8 days and the stack height is 70cm. When the temperature rises above 60 degrees, the stacker is used to turn the stack. After the stack is turned, the temperature drops to 50-55 degrees. After the fermentation, the water content of the clinker is 34.5%. After sieving, magnetic separation and aging, the bentonite and high-concentration humus with a total weight of 5.0‰ of the cl...

Embodiment 3

[0027] After mixing about 10t of flocculent sludge with 85.4% moisture content and 1.2t of auxiliary material wheat bran produced during the biochemical treatment of citric acid industrial organic wastewater, the forklift is put into the shed, and the drying is carried out at high temperature. The sludge is stirred twice during the drying process. The water content is 57.1%, 2.2‰ strains are added to the mixing zone, 0.5t of fermented clinker in Example 2 is remixed, and the water content is 54.9%. The mixed raw materials are mixed into the shallow fermentation tank with a forklift. The fermentation cycle is 8 days and the stack height is 65cm. When the temperature rises above 60 degrees, the stacker is used to turn the stack. After the stack is turned, the temperature drops to 50-55 degrees. After the fermentation, the moisture content of the clinker is 32.8%. After screening, magnetic separation and aging, the bentonite and high-concentration humus of 5.5‰ of the total weight ...

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Abstract

The invention belongs to the comprehensive utilization of wastes in the field of environmental protection, more particularly to a technological method for the preparation of granular organic fertilizer by citric acid industrial floc sludge by means of high-temperature air-drying, fermentation of fermentation strain agent and granulation of a novel continuous granulator, the environmentally-friendly floc sludge is dehydrated, air-dried and added with fermentation strain, the water content of clinker is 25-35% after the fermentation for 7 to 8 days, a part of the sludge is back-admixed to finely adjust the water content of the sludge prior to fermentation technology, then the sludge is screened, magnetically separated and aged to enter a granulation area, powdery organic fertilizer is addedwith a fixed amount of bonding agent, followed by evenly mixing, the mixture is subject to continuous granulation of the novel granulator, drying, cooling and screening to produce the granular organic fertilizer. The fertilizer has the characteristics of abundant nutrition, lasting fertilizer effect and easy storage and simultaneously settles the current problem that the environmentally-friendly floc sludge is hardly treated.

Description

Technical field [0001] The invention belongs to the comprehensive utilization of waste in the field of environmental protection, and specifically relates to a process method for preparing granular organic fertilizer by using citric acid industrial flocculent sludge. Background technique [0002] The production of organic agriculture requires soil to provide nutrients and a bottom-up environment for crop growth and reproduction. However, the excessive development of agriculture, especially the long-term partial application of elemental fertilizers, has caused many problems. Although chemical fertilizers are easy to use and have quick results, most of them are inorganic fertilizers, which have many drawbacks, such as single nutrients and lack of some needed for plant growth. Trace elements, so the taste of cultivated crops, fruits and vegetables will deteriorate, and long-term use will harden the soil and destroy the soil structure. [0003] Organic fertilizers are rich in organic m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05F7/00C05F17/00
CPCY02A40/20Y02W30/40
Inventor 寇光智裴振洪于海彬周昊
Owner RIZHAO JINHE BOYUAN BIOCHEM
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