Special sludge compound fertilizer for gardens

A compound fertilizer and sludge technology, applied in the direction of sewage/sludge fertilizer, inorganic fertilizer, organic fertilizer, etc., can solve secondary pollution and other problems, and achieve the effect of sufficient fertility, good nutritional effect, and coordinated nutritional ratio

Inactive Publication Date: 2017-05-31
ZHEJIANG ACADEMY OF AGRICULTURE SCIENCES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Sludge contains organic matter, nitrogen (N), phosphorus (P), potassium (K) and various trace elements with potential utilization value, but also contains parasite eggs, pathogenic microorganisms and heavy metals such as copper, zinc, chromium and mercury As well as salts, polychlorinated biphenyls, dioxins, radionuclides and other toxic and harmful substances that are difficult to degrade, if they are not properly treated and discharged randomly, it will cause secondary pollution

Method used

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  • Special sludge compound fertilizer for gardens
  • Special sludge compound fertilizer for gardens

Examples

Experimental program
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Effect test

Embodiment 1

[0028] Special sludge compound fertilizer for gardens. The fertilizer is composed of dewatered sludge, mushroom residue, peat, urea, superphosphate, and potassium sulfate.

[0029] Fertilizers include by volume: 15-35% of dewatered sludge, 13-18% of mushroom residue, 10% of peat, 15-25% of urea, 7-12% of superphosphate, and 15-25% of potassium sulfate.

[0030] Fertilizer by volume is 35% of dewatered sludge, 18% of mushroom residue, 10% of peat, 15% of urea, 7% of superphosphate, and 15% of potassium sulfate.

[0031] The moisture content of dewatered sludge is 15-25%.

[0032] The pH value of the fertilizer is 6.87~7.44.

[0033] The total porosity of the fertilizer is ≥60%.

[0034] The water-holding porosity in the fertilizer is ≥50%.

[0035] The ventilation porosity of the fertilizer is ≥10%.

Embodiment 2

[0037] Fertilizer by volume is 15% of dewatered sludge, 13% of mushroom residue, 10% of peat, 25% of urea, 12% of superphosphate, and 25% of potassium sulfate.

[0038] The moisture content of dewatered sludge is 15-25%.

[0039] The pH value of the fertilizer is 6.87~7.44.

[0040] The total porosity of the fertilizer is ≥60%.

[0041] The water-holding porosity in the fertilizer is ≥50%.

[0042] The ventilation porosity of the fertilizer is ≥10%.

[0043] 1%-3% of earthworm egg capsules, composite living bacteria capsules, and sintered vitrified carbon mud mixture are also added to the above dewatered sludge;

[0044] 3-18 portions of earthworm egg capsules, the earthworm egg capsules are obtained by first preparing earthworm eggs and then encapsulating the earthworm eggs, which include soluble starch outer membrane 1 and earthworm eggs 2 protected by the outer membrane. Use starch or other degradable or soluble outer membranes to make earthworm egg capsules from multip...

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Abstract

The invention discloses a special sludge compound fertilizer for gardens. The fertilizer is prepared from the following raw materials in percentage by volume: 15-35% of dewatered sludge, 13-18% of mushroom residue, 10% of turf, 15-25% of urea, 7-12% of calcium superphosphate and 15-25% of potassium sulphate. The special sludge compound fertilizer for the gardens is capable of executing volume reduction and amount reduction on sludge, and has relatively high social application value.

Description

technical field [0001] The invention relates to the technical field of garden fertilizers, in particular to a special sludge compound fertilizer for gardens. Background technique [0002] The sludge produced by urban sewage treatment plants is a mixture of complex components: high water content (75%-99%), high organic matter content, perishable, strong odor, and its solid components are mainly organic debris, bacteria Bacteria, inorganic particles, colloids and agents used for flocculation, etc. Sludge contains organic matter, nitrogen (N), phosphorus (P), potassium (K) and various trace elements with potential utilization value, but also contains parasite eggs, pathogenic microorganisms and heavy metals such as copper, zinc, chromium and mercury As well as salts, polychlorinated biphenyls, dioxins, radionuclides and other toxic and harmful substances that are difficult to degrade, if they are not properly treated and discharged arbitrarily, they will cause secondary pollut...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00A01K67/033
CPCA01K67/0332C05B1/02C05G3/00C05C9/00C05D1/02C05F5/00C05F7/00C05F11/02C05D9/00C05F11/08
Inventor 苏瑶陈柏校喻曼王云龙王成沈阿林陈喜靖
Owner ZHEJIANG ACADEMY OF AGRICULTURE SCIENCES
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