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Method for producing organic fertilizer from sludge

A technology of organic fertilizer and sludge, applied in the direction of organic fertilizer, sewage/sludge fertilizer, fertilization equipment, etc., can solve the problems of land occupation, groundwater pollution, secondary pollution, etc., achieve low cost, improve acidic soil, and production equipment simple effect

Inactive Publication Date: 2008-05-28
FANGXIA ENTERPRISE INFORMATION CONSULTING WUJIANG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the sludge disposal methods of urban sewage treatment plants are mainly sanitary landfill or dump filling pits. Sewage treatment plants generally concentrate sludge and fill pits without taking any pollution prevention measures, resulting in harmful substances in sludge being eroded and infiltrated by rainwater. Leakage pollutes the groundwater to varying degrees, causing serious secondary pollution, and some sludge and domestic waste are disposed of in sanitary landfills, occupying a large amount of land

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0008] The preparation method of the present invention is the following steps:

[0009] Since the water collecting pipes and channels adopt underground channels, no foreign impurities enter during the transportation process, and large impurities such as plastic bags, branches, leaves, etc. in the wastewater are less. 10mm, the inclined net pulp collection system is installed at the front end of the process, and the filter screen adopts 60-mesh nylon mesh to recycle the fibers in the wastewater and reduce the SS content in the wastewater, so as to ensure the recovery of pulp and the quality of effluent water, and reduce the load of subsequent processes , the sludge is pretreated by an organic fertilizer mixer, and an appropriate amount of alkaline conditioner and expansion agent are added during the mixing process, and the pretreated sludge is stacked for oxidative fermentation and enters an industrialized linkage production process. Including material drying, crushing, mixing ...

Embodiment 1

[0012] Ingredients: Sludge

[0013] Preparation:

[0014] Since the water collecting pipes and channels adopt underground channels, no foreign impurities enter during the transportation process, and large impurities such as plastic bags, branches, leaves, etc. in the wastewater are less. 10mm, the inclined net pulp collection system is installed at the front end of the process, and the filter screen adopts 60-mesh nylon mesh to recycle the fibers in the wastewater and reduce the SS content in the wastewater, so as to ensure the recovery of pulp and the quality of effluent water, and reduce the load of subsequent processes , the sludge is pretreated by an organic fertilizer mixer, and an appropriate amount of alkaline conditioner and expansion agent are added during the mixing process, and the pretreated sludge is stacked for oxidative fermentation and enters an industrialized linkage production process. Including material drying, crushing, mixing and granulation, quantitative...

Embodiment 2

[0016] Ingredients: sludge, waste water fiber, and its preparation method is the same as in Example 1.

[0017] In summary, the farmyard manure produced from sludge of the present invention can be widely used in upland crops, seedlings, flowers, and lawns, and has simple production equipment, low cost, easy use, and can effectively improve acidic soil and the like.

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Abstract

The invention provides a novel fabricating concept of producing farmyard manure with filthy mud and a method thereof, comprising steps that: an artificial grid is used for deslag, and an inclined wire slurry collection system is used and is arranged at the front part of a technique; a nylon wire of 60 meshes is used by a trap valve; pretreatment is conducted through an organic fertilizer mixing roll, a certain content of alkalescent conditioner and expanding agent are added in a mixing process, and a stacking oxygen enrichment fermentation is carried out on the filthy mud which is mixed and pretreated; then the filthy mud enters an industrial integrating production process which comprises material drying, grinding, mixing and stirring and granulating. The invention has the advantages that: atmospheric pollution caused by filthy mud incineration is avoided, and oil fuel energy is saved, meanwhile, virtuous circle utilization of waste water and filthy mud is realized, and nitrogen, phosphorus and potassium, etc., can be added, thus being widely applied to dry land crops, nursery stock, flowers and lawn; in addition, production equipment is simple; cost is low, usage is convenient, and acid soil can be effectively improved.

Description

technical field [0001] The invention relates to a method for harmless utilization of sludge, in particular to a method for producing farmyard manure from sludge. Background technique [0002] At present, the sludge disposal methods of urban sewage treatment plants are mainly sanitary landfill or dump filling pits. Sewage treatment plants generally concentrate sludge and fill pits without taking any pollution prevention measures, resulting in harmful substances in sludge being eroded and infiltrated by rainwater. Leakage pollutes the groundwater to varying degrees, causing serious secondary pollution, and some sludge is disposed of in sanitary landfills together with domestic waste, occupying a large amount of land. Contents of the invention [0003] The purpose of the invention is to provide a method for producing agricultural organic fertilizer after the sludge is harmlessly treated. [0004] The technical scheme provided for realizing the present invention is: [0005]...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05F7/00
CPCY02A40/20
Inventor 韩国庆
Owner FANGXIA ENTERPRISE INFORMATION CONSULTING WUJIANG
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