Method for producing fertilizer with papermaking sewage sludge

A papermaking sludge and organic fertilizer technology, which is applied in the preparation of organic fertilizers, organic fertilizers, and the treatment of biological organic parts, can solve the problems that affect the rapid reproduction of composting microorganisms, slow humification speed, and low processing efficiency, and achieve Harmless, less nutrient loss, good taste effect

Inactive Publication Date: 2009-05-13
SHOUGUANG CAILUN ZHONGKE FERTILIZER
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0006] At present, there are many patent documents and reports on the use of municipal sludge to manufacture organic fertilizers. Although these technologies have their own different characteristics, they all have the following problems in varying degrees: one is all for municipal sludge, and papermaking There is a big difference between sludge and urban sludge in terms of rationality; the second is to kill pathogenic microorganisms and parasites (eggs), adjust the pH value to be equal to or greater than 12, and easily cause ammonia volatilization loss under alkaline conditions, resulting in stench, pollution
Third, although it can effectively kill pathogenic microorganisms and parasites (eggs) in a strong alkaline environment, it also affects the rapid reproduction of composting microorganisms, resulting in slow humification, long composting cycles, and low treatment efficiency. Compost products are strongly alkaline
Fourth, only simple stacking and sieving, without subsequent processing such as formula granulation for easy use and more comprehensive and scientific nutrients

Method used

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  • Method for producing fertilizer with papermaking sewage sludge

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Effect test

Embodiment 1

[0027] As shown in the accompanying drawing, the method for utilizing papermaking sludge to prepare organic fertilizer comprises the following steps and process conditions:

[0028] a) Fermentation Mix papermaking sludge with a moisture content of 80% and papermaking dedusting at a volume ratio of 2:1 to prepare a mixed sludge with a moisture content of 60%, a carbon-to-nitrogen mass ratio of 35:1, and an organic matter content of 60%. , according to the proportion of 1% relative to the mixed sludge mass, spray the spoilage yeast waste liquid and put it into the fermentation tank for fermentation. And maintain the temperature for 6 days, start to cool down, and the temperature will drop to 40 ℃ after 2 days;

[0029] b) Post-ripening Put the above-mentioned materials into post-ripening ponds, pile them up to a height of 1.2m for post-ripening, and turn over the stack once a day from the next day to make the stack ferment thoroughly and further reduce the water content. After 5...

Embodiment 2

[0033] As shown in the accompanying drawing, the method for utilizing papermaking sludge to prepare organic fertilizer comprises the following steps and process conditions:

[0034] a) Fermentation Mix papermaking sludge with bark and crop straw mixture (bark and crop straw are mixed in a mass ratio of 1:1) in a volume ratio of 2.5:1 to prepare a moisture content of 55% and a carbon-to-nitrogen mass ratio of 25: 1. For the mixed sludge with 50% organic matter mass content, spray the putrefaction agent wood vinegar in the proportion of 0.8% relative to the mixed sludge mass, and put it into the fermentation tank for fermentation. The height of the fermentation tank is 2m, and the ventilation volume and ventilation are controlled by the computer control system Frequency, reach 60°C within 2 days, and maintain this temperature for 7 days, start to cool down, and the temperature will drop to 35°C after 2 days;

[0035] b) Post-ripening Put the above-mentioned materials into post-r...

Embodiment 3

[0039] As shown in the accompanying drawing, the method for utilizing papermaking sludge to prepare organic fertilizer comprises the following steps and process conditions:

[0040] a) Fermentation Mix papermaking sludge with papermaking dust removal and bark mixture (papermaking dust removal and bark are mixed in a mass ratio of 0.5:1) in a volume ratio of 1.5:1 to prepare a moisture content of 50-55%, carbon and nitrogen mass The mixed sludge with a ratio of 30:1 and an organic matter content of 55% is sprayed with putrefactive yeast waste liquid at a ratio of 1.2% of the mixed sludge mass, and then put into a fermentation tank for fermentation. The fermentation tank is 2m high and controlled by a computer control system. Ventilation volume and ventilation frequency, reach 65°C within 1.5 days, and maintain this temperature for 5 days, then start to cool down, and the temperature will drop to 45°C after 2.5 days;

[0041] b) Post-ripening Put the above-mentioned materials in...

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Abstract

The invention discloses a method for preparing organic fertilizer from paper-making sludge. The materials such as paper-making sludge, amendment are mixed, subjected to high-temperature aerobic fermentation, post maturation and crushing, screened, and mixed with fertilizer of nitrogen, phosphorus, potassium and the like and medium and micro elements to prepare the organic fertilizer. The method has the advantages of simple process, easy operation, obvious innocuous effect, no environmental pollution and little nutrient loss; and the organic fertilizer prepared by the method is widely applied to industrial crops such as vegetables, fruit trees, Chinese herbal medicines, flowers and field crops such as wheat, corn, paddy rice.

Description

technical field [0001] The invention relates to a method for preparing organic fertilizer by using industrial waste, in particular to a method for preparing organic fertilizer by using papermaking sludge. Background technique [0002] The traditional international papermaking sludge treatment and disposal methods mainly include ocean dumping, incineration, landfill, land utilization, etc. The comparison of various processing methods is shown in the table below: [0003] solving method advantage shortcoming Throw into the sea low cost Secondary pollution, destroying the ecological balance of the ocean (has been Foreign law prohibits) incinerate Kill pathogenic microorganisms Complete harmless reduction heat recovery High investment cost and high operating cost Exhaust gas causes secondary pollution waste of nutrients landfill Helps restore damaged landscapes Maintain the ecological environ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G1/00C05F17/00C05F11/02C05C9/00
CPCY02W30/40
Inventor 赵仕明桑杰儒张耿文
Owner SHOUGUANG CAILUN ZHONGKE FERTILIZER
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