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Method for preparing fertilizer from activated sludge

A technology for activated sludge and fertilizer preparation, which is applied in fertilizer mixture, application, fertilization device and other directions, can solve problems such as poor effect, and achieve the effect of improving soil quality, improving economic and social benefits, and rapid and lasting fertilizer efficiency.

Active Publication Date: 2015-06-10
铜陵精华高新科创有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the remaining activated sludge after wastewater treatment still contains a lot of harmful substances, and it is directly used as fertilizer, and the effect is poor.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] A kind of method of preparing fertilizer with activated sludge of the present invention, comprises the following steps:

[0015] (1) Mix activated sludge and water at a mass ratio of 1:150 and pass through a 20-mesh sieve to obtain a suspension;

[0016] (2) Add iron sulfate 150-200r / min to the sieved suspension and stir for 5 hours, centrifuge, discard the filtrate, and keep the solid mixture;

[0017] (3) Add the solid mixture obtained in step (2) into polyacrylamide, diethyl ethyl ethyl ethylate, and polyaspartic acid, stir evenly, and then enter the granulator for granulation.

[0018] The components by mass ratio are: 100 parts of activated sludge, 4 parts of iron sulfate, 16 parts of polyacrylamide, 8 parts of diethyl diethylhexanoate, and 7 parts of polyaspartic acid.

[0019] After being granulated by a granulator, the particle diameter is 0.01-1mm.

[0020] Compared with common chemical fertilizers, the activated sludge fertilizer prepared by using the method...

Embodiment 2

[0022] A kind of method of preparing fertilizer with activated sludge of the present invention, comprises the following steps:

[0023] (1) Mix the activated sludge and water at a mass ratio of 1:200 and pass through a 20-mesh sieve to obtain a suspension;

[0024] (2) Add iron sulfate 150-200r / min to the sieved suspension and stir for 5 hours, centrifuge, discard the filtrate, and keep the solid mixture;

[0025] (3) Add the solid mixture obtained in step (2) into polyacrylamide, diethyl ethyl ethyl ethylate, and polyaspartic acid, stir evenly, and then enter the granulator for granulation.

[0026] The components by mass ratio are: 100 parts of activated sludge, 5 parts of ferric sulfate, 20 parts of polyacrylamide, 10 parts of diethyl diethylhexanoate, and 8 parts of polyaspartic acid.

[0027] After being granulated by a granulator, the particle diameter is 0.01-1mm.

[0028] Compared with common chemical fertilizers, the activated sludge fertilizer prepared by using the...

Embodiment 3

[0030] A kind of method of preparing fertilizer with activated sludge of the present invention, comprises the following steps:

[0031] (1) Mix the activated sludge and water at a mass ratio of 1:100 and pass through a 20-mesh sieve to obtain a suspension;

[0032] (2) Add iron sulfate 150-200r / min to the sieved suspension and stir for 5 hours, centrifuge, discard the filtrate, and keep the solid mixture;

[0033] (3) Add the solid mixture obtained in step (2) into polyacrylamide, diethyl ethyl ethyl ethylate, and polyaspartic acid, stir evenly, and then enter the granulator for granulation.

[0034] The components by mass ratio are: 100 parts of activated sludge, 2 parts of iron sulfate, 10 parts of polyacrylamide, 5 parts of diethylhexanoate, and 5 parts of polyaspartic acid.

[0035] After being granulated by a granulator, the particle diameter is 0.01-1mm.

[0036] Compared with common chemical fertilizers, the activated sludge fertilizer prepared by using the method of ...

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Abstract

The invention discloses a method for preparing a fertilizer from activated sludge, which comprises the following steps: mixing activated sludge and water, screening, adding ferric sulfate, stirring, centrifuging to obtain a solid mixture, adding polyacrylamide, diethyl aminoethyl hexanoate and polyaspartic acid, stirring uniformly, and sending into a granulator for granulation. The fertilizer prepared by the method can provide crops with multiple nutrient elements for by using the key actions of the contained microbes, and can also provide the crops with abundant biotin amino acids, vitamins, growth hormones, antibiotics and many other biologically active substances which are essential for growth.

Description

technical field [0001] The invention relates to the technical field of organic fertilizers, in particular to a method for preparing fertilizers from activated sludge. Background technique [0002] After the treatment capacity of the activated sludge in the sewage treatment plant decreases, the utilization value of the remaining activated sludge will decrease. The treatment of the remaining activated sludge is also an important problem faced by the sewage treatment plant. The remaining sludge mainly contains microorganisms, which are adsorbed by microorganisms. Organic matter and microbial metabolic activity products also contain a large amount of polysaccharides, proteins, and cellulose substances. Some use activated sludge directly as farmland fertilizer after dehydration. However, the residual activated sludge after wastewater treatment still contains a lot of harmful substances, so it is directly used as fertilizer, and the effect is poor. How to process activated sludg...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05G3/00
Inventor 徐茂航
Owner 铜陵精华高新科创有限责任公司