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
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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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