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Series special fertilizer prepared by urban sludge and its preparation method

A technology of municipal sludge and special fertilizer, applied in the directions of sewage/sludge fertilizer, sludge treatment, chemical instruments and methods, etc., to achieve the effect of wide application, enhanced stress resistance and early maturity

Inactive Publication Date: 2005-03-16
李成义
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The patent application number for microbial fertilizers is 94118231.2, titled "A Production Method for Biological Fertilizer and the Microorganisms Used therein", and the application number is 00117587.4, titled "Biological Fertilizer Composition and Its Application", and the title is 97118994.3, titled It is "a kind of agricultural biological fertilizer and its preparation method", the application number is 00131249.9, and the name is "natural whole-element organic biological fertilizer for melons and fruits", etc. The technical solutions recorded in it are different and have their own advantages , but there are also deficiencies in the comprehensive effect

Method used

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  • Series special fertilizer prepared by urban sludge and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Embodiment 1: According to figure 1 The process shown

[0028] a. Do chemical deodorization treatment to the sludge first, and add 0.5% ferrous sulfate (FeSO 4 .7H2o) and 0.1% magnesium sulfate (MgSO 4 ), stir evenly after mixing, let stand for 1-2 hours, and then transport the odorless sludge to a dry site for precipitation drying.

[0029] b. Dehydration and drying: the drying field uses plastic greenhouses, spreads the deodorizing sludge into a 15cm thickness in the greenhouse, in a wave shape, and naturally dries at room temperature until the water content is 40-50%, and then becomes the deodorizing sludge for use;

[0030] c. Biological fermentation: Weigh 1000kg (200 parts) of deodorized sludge with a water content of 40-50%, 50kg (10 parts) of rice bran, 10kg (2 parts) of bran, 5kg (1 part) of brown sugar and enzyme strains (Commercially available) 5kg (1 part) mixed and stirred evenly, spread out on the cement floor into a long mountain shape with a width of ...

Embodiment 2

[0038] Embodiment 2, according to figure 1 The process shown

[0039] a. Chemical deodorization: Add ferrous sulfate (FeSO 4 .7H2o) and 0.3% magnesium sulfate (MgSO 4 ), stir evenly after mixing, and others are with embodiment 1;

[0040] B, dehydration drying: with embodiment 1;

[0041] c, biological fermentation: 1000kg of deodorized sludge with a water content of 40-50%, add 60kg (12 parts of straw powder, 6.5kg (1.3 parts) of white sugar and 7.5kg (1.5 parts) of enzyme bacteria (commercially available) , after fully stirring evenly, with embodiment 1;

[0042] D, dry crushing: with embodiment 1;

[0043] e, mixed ingredients: take 50kg of urea, 20kg of monoammonium phosphate, and 20kg of potassium sulfate to make mixed potassium sulfate for subsequent use;

[0044] Take by weighing 45kg of humic acid, 20kg of bentonite, 35kg of rice bran and mix the auxiliary materials prepared by stirring evenly for subsequent use;

[0045] Weigh 45kg of powdery fermented sludge, ...

Embodiment 3

[0048] Embodiment 3, according to figure 1 The process shown

[0049] a. Chemical deodorization: Add ferrous sulfate (FeSO 4 .7H2o) and 0.2% magnesium sulfate (MgSO 4 ), stir evenly after mixing, and others are with embodiment 1;

[0050] B, dehydration drying: with embodiment 1;

[0051] c, biological fermentation: be 40-50% deodorizing sludge 1000kg with water content, add 55kg (11 parts) cornmeal, 7.5kg (1.5 parts) starch and 7.5kg (1.5 parts) ferment bacterial classification (commercially available), Fully stir evenly, other is with embodiment 1;

[0052] D, dry crushing: with embodiment 1;

[0053] E, mixing ingredients: take by weighing 35kg of urea, 35kg of monoammonium phosphate, and 30kg of potassium sulfate to make mixed potassium sulfate for subsequent use;

[0054] Take by weighing 35kg of humic acid, 25kg of bentonite, 40kg of rice bran and stir the auxiliary material prepared evenly for subsequent use;

[0055] Weigh 55kg of powdery fermented sludge, add 3...

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Abstract

The invention discloses a series special fertilizers prepared by urban sludge and its preparation method which comprises the steps of, (1) preliminary treatment, (2) water elimination and drying, (3) fermenting, (4) drying and disintegrating, (5) mixing and proportioning, (6) squeezing and granulating.

Description

Technical field: [0001] The invention belongs to the treatment of urban sludge and the preparation method of biological fertilizers, in particular to a series of special fertilizers prepared from urban sludge and a preparation method thereof. Background technique: [0002] Municipal sludge is the sludge left in the sewage treatment tank after the urban sewage is purified and discharged. Only a medium-sized city can build a sewage treatment plant with a daily processing capacity of 100,000 tons, which can produce tens of thousands of tons of sludge every year. . This kind of sludge produced by sewage treatment plants has a large water content, generally 80-96%, in the form of colloid, high viscosity and unpleasant smell; its main components contain a certain amount of organic matter and nitrogen, phosphorus, and potassium and other elements, but also contains a certain amount of harmful bacteria, such as Escherichia coli and roundworm eggs and heavy metals. Such a large amo...

Claims

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Application Information

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IPC IPC(8): C02F11/00C05F7/00
CPCY02A40/20
Inventor 李成义
Owner 李成义
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