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Method for making organic-inorganic compound fertilizer by composting municipal sludge

A technology of municipal sludge and compound fertilizer, applied in fertilizer mixture, application, fertilization device and other directions, can solve the problems of uneven product quality, large difference in nutrient content, large difference in humic acid content, large difference in organic fertilizer effect, etc. Achieving the effect of nutrient balance, less material return and convenient application

Active Publication Date: 2011-12-21
SOUND ENVIRONMENTAL RESOURCES
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In the prior art, the effects of organic fertilizers from different sources are quite different, the main reason is that the nutrient content and humic acid content in the raw materials are quite different, and some raw materials are made into organic fertilizer and organic-inorganic compound without decomposing. fat, resulting in uneven product quality

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  • Method for making organic-inorganic compound fertilizer by composting municipal sludge
  • Method for making organic-inorganic compound fertilizer by composting municipal sludge

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specific Embodiment

[0039] Specific examples, such as figure 1 shown, including:

[0040] Step 1, pulverization: pulverize the urban sludge compost and weathered coal with a pulverizer respectively, pass through a 60-mesh sieve, and use the sieve for standby;

[0041] The crushing step in the above-mentioned step 1 specifically includes:

[0042] Municipal sludge compost and weathered coal with a water content lower than 20% are ground separately by a ball mill, and passed through a 60-mesh sieve for later use.

[0043] Step 2, mixing: mix 21 kg of ammonium bicarbonate, 60 kg of weathered coal, 140 kg of urea, 55 kg of ammonium monohydrogen phosphate (powder), 175 kg of potassium sulfate (powder), and 550 kg of sludge compost evenly , made into mixed materials;

[0044] The mixing step in the above-mentioned step 2 specifically includes:

[0045] First mix 21 kg of ammonium bicarbonate with 60 kg of weathered coal evenly, then mix with 140 kg of urea, 55 kg of ammonium monohydrogen phosphate ...

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Abstract

The invention discloses a method for preparing an organic and inorganic compound fertilizer by using urban sludge compost, which prepares the organic and inorganic compound fertilizer by using urban sludge compost as a main raw material and weathered coal, ammonium bicarbonate, urea, ammonium hydrogen phosphate, potassium sulfate and modified corn flour binding agent as auxiliary materials and byan ammoniation granulation process. The method has the advantages that: the nutrient utilization rate is high; the fertilizer effect is lasting; less material is returned; the granulation rate is high; and the product has high storage performance. The method is suitable for large-scale treatment of sludge compost. The prepared organic and inorganic compound fertilizer can be applied conveniently and keep nutrient balance and has lasting fertilizer effect.

Description

technical field [0001] The invention relates to a waste resource utilization and fertilizer production method, in particular to a method for producing organic-inorganic compound fertilizer by composting urban sludge. Background technique [0002] In agricultural production, the consumption of chemical fertilizers is huge, but due to a series of reactions such as fixation, decomposition, and volatilization of chemical fertilizers after they are applied to the soil, the nutrient utilization efficiency of fertilizers only accounts for about 30% of the total nutrients. This not only causes a serious waste of nutrient resources, but also causes a series of environmental problems such as soil compaction, secondary salinization, and groundwater pollution. [0003] At present, humic acid-containing fertilizers such as organic fertilizers and organic-inorganic compound fertilizers are gradually accepted and recognized by the agricultural materials market, and are widely used in produ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G1/00
Inventor 蔡红
Owner SOUND ENVIRONMENTAL RESOURCES
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