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Preparation method for producing organic fertilizer with sludge

A technology of organic fertilizer and silt, applied in the field of preparation of organic fertilizer using silt, which can solve the problems of transportation and application difficulties, rotten and smelly silt, etc., and achieve obvious effect of increasing production

Inactive Publication Date: 2018-10-02
湖北绿安生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such sludge is easy to rot and smell, and it is also very difficult to transport and apply.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0007] After preliminary treatment, 100 tons of sludge is put into a horizontal drum fermentation device. Under the condition of rotating speed of 0.08r / rain, natural ventilation is used to ferment for 5 days. The temperature in the drum can reach 55-65°C. During the aerobic fermentation process It can not only kill all kinds of worm eggs and pathogenic bacteria, but also reduce the moisture content of the sludge from 70% to 40%; then extrude the sludge through an extruder and then granulate it to obtain granular organic fertilizer.

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PUM

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Abstract

The invention relates to treatment for city water plant sludge, in particular to a preparation method of producing organic fertilizer with the sludge. In the method, the city water plant sludge whichis primarily treated is utilized, a horizontal roller fermenting device is adopted, the length of the roller is 10-12 m, the inner diameter of the roller is 1-1.2 m, the sludge is fermented for 5-8 days in the roller under the condition that the rotation speed is 0.08r / rain and in the three modes of natural ventilation, forced ventilation and intermittent forced ventilation, the temperature in theroller can reach 40-55 DEG C, and the content of water of the sludge is lowered to 40% from 70%; then granulating is performed after the sludge is extruded with an extruder, and the particular organic fertilizer is obtained.

Description

technical field [0001] The invention relates to a treatment of urban water plant sludge, in particular to a preparation method for producing organic fertilizer from sludge. Background technique [0002] At present, with the development of the city, domestic water and production water have increased greatly, and the cost of sewage treatment is very high. During the treatment of these sewage, 0.3%-0.5% of the total amount of sewage treatment is discharged. "Activated sludge". Although the discharge of silt is small, the treatment cost is very expensive, about 300-500 yuan per ton of silt. Not only the treatment cost of sludge is high, but also the existing treatment process can not meet the requirement of "safe and harmless". Incidents of sludge discharge and environmental pollution have occurred frequently. Therefore, seeking a safe and harmless treatment method has become an urgent problem to be solved in sewage treatment. However, it is very difficult to directly make f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05F7/00C05F17/00C05F17/02
CPCC05F7/00C05F17/00C05F17/90C05F17/979Y02A40/20Y02W30/40
Inventor 邹杰
Owner 湖北绿安生物科技有限公司