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Sewage treatment sludge recycling device and method

A sludge recycling and sewage treatment technology, applied in biological sludge treatment, fertilization devices, invertebrate treatment, etc. The effect of increasing the heating area and eliminating peculiar smell

Active Publication Date: 2019-01-15
NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the development of my country's social economy and the improvement of urbanization level, the sludge output of urban sewage plants in my country has increased rapidly. It is estimated that the sludge output (80% moisture content) in my country in 2011 exceeded 30 million tons, and the disposal of sludge should follow the " According to the four principles of reduction, harmlessness, stabilization, and resource utilization, the main methods of sludge disposal at home and abroad include landfill, incineration, composting, and resource utilization, etc. Landfill technology has low treatment costs, but It occupies a large area, and the landfill gas and leachate are large and difficult to deal with
The incineration technology has a significant capacity reduction effect, and the calorific value of the sludge can be utilized, but the operating cost is high, and there is a problem of secondary air pollution

Method used

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  • Sewage treatment sludge recycling device and method
  • Sewage treatment sludge recycling device and method
  • Sewage treatment sludge recycling device and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Such as Figure 1 to Figure 7 As shown, a device for recycling sludge after sewage treatment includes a support frame 15 and an earthworm breeding bin fixed above the support frame 15. The earthworm breeding bin includes a bin body 2, a bin cover 22, a lighting assembly and a discharge Assemblies, ventilation holes 3 are evenly arranged on the sides of the warehouse body 2, and the warehouse cover 22 is covered to the top of the warehouse body 2 to provide a cool environment, which is suitable for the growth of earthworms; the lighting assembly includes a light source 4 and a light source for powering the light source 4 A controller 5, the light source 4 is fixed to the upper side of the side wall of the bin body 2;

[0038]The discharge assembly includes a metal screen 10, a vibrating motor 1 for driving the metal screen 10 to swing (the vibrating motor 1 drives the metal screen 10 to swing using the existing technology) and a discharge bottom plate 13. A gap of 10 cm...

Embodiment 2

[0041] It is basically the same as Embodiment 1, except that the two moving rods 6 on one side of the discharge bottom plate 13 are connected by a connecting rod 14 . The light source 4 is a cold light source without temperature, and the intensity of the light source 4 is adjusted by the light source controller 5 . The bin body 2 is made of light-shielding material. Described stirring paddle 18 comprises four uniformly arranged blades, and described blade comprises first segment blade 181 and second segment blade 182, and one end of described first segment blade 181 is connected to the shaft of stirring paddle 18, and the other end is connected to The second section of blade 182, the first section of blade 181 is 25 degrees to the horizontal plane, the distance between the second section of blade 182 and the first section of blade 181 is 130 degrees, and the cross sections of the first section of blade 181 and the second section of blade 182 are diamond-shaped . The height o...

Embodiment 3

[0043] According to implementation 1, a method for treating sludge with a device for recycling sludge after sewage treatment includes the following steps: placing the device in a dark environment when in use;

[0044] Step 1: Preparatory work: Position the moving rod 6 to the upper end of the waist-shaped hole on the side wall of the bin body 2, insert the cylinder 12 into the round hole of the discharge bottom plate 13, and at this time, the bottom of the bin body 2 is sealed;

[0045] Step 2: Add sludge after sewage treatment into the bin body 2, and then add earthworms, the amount of earthworms added is 10g of earthworms per kilogram of sludge, cover the bin cover 22, turn on the light source 4, and use the light source controller 5 Adjust the intensity of the light source 4, and the earthworms enter the sludge to process the sludge, and the treatment time is 15 days;

[0046] Step 3: Turn off the light source 4, pass steam into the discharge bottom plate 13 to heat the dis...

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Abstract

The invention provides a sewage treatment sludge recycling device and method. The device comprises a supporting frame and an earthworm breeding cabin, wherein the earthworm breeding cabin is fixed above the supporting frame; the earthworm breeding cabin comprises a cabin body, a cabin cover, a lighting assembly and a discharging assembly; the discharging assembly comprises a metal screen, a vibrating motor used for driving the metal screen to swing and a discharging bottom plate; nail-shaped protrusions are evenly distributed on the upper surface of the metal screen, cylinders are evenly distributed on the lower surface of the metal screen, round holes for the cylinders to be inserted into are evenly distributed on the discharging bottom plate, a steam channel is arranged in the discharging bottom plate, and a stirring device is arranged below the earthworm breeding cabin. According to the sewage treatment sludge recycling device disclosed by the invention, the characteristics of photophoby and heat intolerance of earthworms are utilized, and the earthworms are utilized to treat sludge and heavy metal in the sludge; furthermore, heating of the discharging bottom plate is utilized to kill germs and eliminate peculiar smell; after the sludge is treated by the earthworms, the sludge is mixed with other useable waste to be applied to agricultural fertilizers; thus, sludge resourcesare recycled, environmental protection is achieved, and the cost is low.

Description

technical field [0001] The invention relates to the technical field of sludge utilization, in particular to a device and method for recycling sludge after sewage treatment. Background technique [0002] With the development of my country's social economy and the improvement of urbanization level, the sludge output of urban sewage plants in my country has increased rapidly. It is estimated that the sludge output (80% moisture content) in my country in 2011 exceeded 30 million tons, and the disposal of sludge should follow the " According to the four principles of reduction, harmlessness, stabilization, and resource utilization, the main methods of sludge disposal at home and abroad include landfill, incineration, composting, and resource utilization, etc. Landfill technology has low treatment costs, but It occupies a large area, and the landfill gas and leachate are large and difficult to deal with. The incineration technology has a significant capacity reduction effect, and t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/02A01K67/033C05F15/00
CPCA01K67/0332C02F11/02C05F3/00C05F11/02C05F17/05
Inventor 刘秉涛杨小丽魏明华范振强刘京
Owner NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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