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Sludge organic fertilizer and preparation method thereof

A technology of organic fertilizer and sludge, applied in the field of fertilizers, can solve the problems of malodorous mosquitoes and flies, pollute the environment, etc., achieve the effects of improving yield and quality, solving environmental pollution problems, and high fertilizer utilization rate

Inactive Publication Date: 2015-04-01
马新亚
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, only 20% of the sludge has been harmlessly treated and stabilized, 10% of the sludge is directly used in farmland, 20% of the sludge is landfilled, and 50% of the sludge is piled up everywhere without any treatment. The stench and the breeding of mosquitoes and flies seriously pollute the environment

Method used

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  • Sludge organic fertilizer and preparation method thereof
  • Sludge organic fertilizer and preparation method thereof

Examples

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Effect test

Embodiment 1

[0023] A sludge organic fertilizer made of the following raw materials by weight: 100 parts of sludge, 2 parts of fly ash, 0.1 part of organic fertilizer starter, 0.5 part of quicklime, 20 parts of urea, 20 parts of monoammonium phosphate, chlorinated 15 parts of potassium, 20 parts of humic acid, 20 parts of clay.

[0024] The organic fertilizer starter comes from Kangyuan Oasis Biotechnology Co., Ltd. or Cangzhou Wang Biotechnology Research Institute Co., Ltd.

[0025] The humic acid comes from the lignite weathered coal humic acid organic matter provided by Zigong Huahao Industrial Co., Ltd.

[0026] The above-mentioned preparation method of sludge organic fertilizer includes the following steps:

[0027] (1) Mix 20kg of fly ash per ton of sludge, and then transport it to the sludge drying field for drying. When drying, use a turning and throwing machine for multiple times to reduce the moisture content of the sludge to 50%. When the rate is 50%, it is most suitable for the reprod...

Embodiment 2

[0032] A sludge organic fertilizer made of the following raw materials by weight: 90 parts of sludge, 2.5 parts of fly ash, 0.05 parts of organic fertilizer starter, 0.4 parts of quicklime, 10 parts of urea, 5 parts of monoammonium phosphate, chlorinated 4 parts of potassium, 40 parts of humic acid, 25 parts of clay.

[0033] The above-mentioned sludge organic fertilizer was prepared with reference to the method of Example 1, except that in step (2), forced ventilation was performed for 10 days for aerobic fermentation, and step (3) was for anaerobic fermentation for 12 days.

Embodiment 3

[0035] A sludge organic fertilizer, made of the following raw materials by weight: 110 parts of sludge, 1.5 parts of plant ash, 0.15 parts of organic fertilizer starter, 0.6 parts of quicklime, 30 parts of urea, 15 parts of monoammonium phosphate, and 10 parts of potassium chloride Parts, 30 parts of humic acid, 23 parts of clay.

[0036] The above-mentioned sludge organic fertilizer was prepared by referring to the method of Example 1, except that in step (2), forced ventilation was carried out for 12 days for aerobic fermentation, and in step (3), anaerobic fermentation was carried out for 8 days.

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Abstract

The invention provides a sludge organic fertilizer, belonging to the field of fertilizer. The sludge organic fertilizer is mainly prepared from the following raw materials in parts by weight: 90-110 parts of sludge, 1.5-2.5 parts of a dispersant, 0.05-0.15 part of an organic fertilizer fermenting agent and 0.4-0.6 part of quicklime. The invention further provides a preparation method of the sludge organic fertilizer. The preparation method comprises the following steps: (1) mixing and airing sludge and the dispersant; (2) mixing the organic fertilizer fermenting agent into the aired material and carrying out aerobic fermentation in a fermentation cabin for 10-15 days; (3) mixing the quicklime into the material after aerobic fermentation, covering and piling by using a plastic thin film, and carrying out anaerobic fermentation for 8-12 days; and (4) airing, crushing, granulating, drying, cooling and screening the material after anaerobic fermentation to obtain a finished product, wherein the grain size of granules after granulation is 2-5mm. By using sludge as the raw material, innocent treatment and cyclic utilization of sludge are achieved, and the problem of environmental pollution caused by sludge is solved.

Description

technical field [0001] The invention belongs to the field of fertilizers, and in particular relates to a sludge organic fertilizer and a preparation method. Background technique [0002] With the acceleration of urbanization and the improvement of industrialization in our country, urban domestic sludge has become the main pollution source of water environment. Some larger cities have built sludge treatment plants, using aerobic composting, incineration, dry landfill and other processes to treat sludge in a harmless, reduced and stabilized manner. However, at present, only 20% of the sludge has been harmlessly treated and stabilized, 10% of the sludge is directly used in farmland, 20% of the sludge is landfilled, and 50% of the sludge is piled up everywhere without any treatment. The stench and the breeding of mosquitoes and flies seriously pollute the environment. [0003] The water content of dewatered sludge produced by urban sewage treatment plants is about 75%~85%. The...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00C05F17/00
CPCC05B7/00C05F17/50C05G3/00C05G3/80C05C9/00C05D1/02C05D3/02C05F7/00C05F11/02Y02W30/40
Inventor 马新亚
Owner 马新亚
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