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Residual sludge cell wall breaking system and method

A technology of excess sludge and cells, which is applied in sludge treatment, chemical instruments and methods, water/sludge/sewage treatment, etc., can solve the problems of long sludge residence time, complicated operation and management, and large pool volume. Achieve the effect of reducing digestion reaction time, improving dehydration performance, and low processing cost

Inactive Publication Date: 2012-07-11
SCIMEE TECH & SCI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its treatment cost accounts for 25% to 40% of the total operating cost of the sewage treatment plant, even as high as 60%; the mesothermic anaerobic digestion process for sludge commonly used has the disadvantages of slow reaction speed and too long residence time of sludge in the tank. Disadvantages such as large pool volume, complex operation and management, and low methane content in gas production

Method used

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  • Residual sludge cell wall breaking system and method
  • Residual sludge cell wall breaking system and method
  • Residual sludge cell wall breaking system and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The embodiment of the present invention provides a system for breaking the cell wall of excess sewage. The mixer and the bead mill are in a split structure, and the sludge outlet end of the mixer is connected with the bead mill through a pipeline, such as figure 1 As shown, the system includes:

[0032] Mixer 1; Dosing pump 2; PH value adjustment device 3; Bead mill 4 and pipeline;

[0033] in,

[0034] A. Sludge inlet; B. Magnetic powder input inlet; C. PH adjustment inlet; D. Broken sludge outlet;

[0035] The mixer 1 is provided with a sludge inlet A and a magnetic powder feeding inlet B, and the sludge outlet of the mixer is connected with the bead mill 4 ; the mixer 1 is connected with the pH adjusting device 3 through the dosing pump 2 .

[0036] The method of using the above-mentioned system to deal with the broken cell wall of excess sludge is:

[0037] The remaining sludge with a water content of 95% enters the mixer, and the pH value is adjusted to 8 by the...

Embodiment 2

[0040] The embodiment of the present invention provides a system for breaking the cell wall of excess dirt. The magnetic powder feeding inlet is connected with the magnetic powder recovery circulation system. The magnetic powder recovery circulation system is composed of a magnetic separation device and a magnetic powder buffer box; the magnetic separation device consists of a magnetic drum and a slag scraping bar. It is composed of a slag unloading tank; the mixer and the bead mill are of a split structure, and the sludge outlet of the mixer is connected to the bead mill through a pipeline; there is an isolation plate inside the mixer, and the isolation plate divides the mixer into two parts. The sludge inlet side part of the mixer is mixer one, and the sludge outlet side part of the mixer is mixer two, and a communication port is provided on the isolation plate to connect mixer one and mixer two; the mixer is equipped with an agitator. Such as figure 2 As shown, the system ...

Embodiment 3

[0049] The embodiment of the present invention provides a system for breaking the cell wall of excess dirt. The magnetic powder feeding inlet is connected with the magnetic powder recovery circulation system. The magnetic powder recovery circulation system is composed of a magnetic separation device and a magnetic powder buffer box; the magnetic separation device consists of a magnetic drum and a slag scraping bar. It is composed of a slag unloading tank; the mixer and the bead mill are integrally structured, and the interior is divided into two parts by setting a partition plate, and a communication port is provided on the partition plate to connect the mixer and the bead mill. like image 3 As shown, the system includes:

[0050] Mixer 1; dosing pump 2; pH value adjustment device 3; bead mill 4; magnetic drum 7; slag scraping bar 8; slag discharge tank 9; magnetic powder buffer box 10 and pipeline;

[0051] in,

[0052] A. Sludge import; B. Magnetic powder input inlet; C. ...

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Abstract

The invention belongs to the field of sewage treatment and in particular relates to a novel residual sludge cell wall breaking system and method. The system comprises a mixer, a bead mill and a pH adjusting device, wherein the mixer is provided with a sludge inlet and a magnetic powder feeding port; a sludge outlet of the mixer is communicated with the bead mill; and the mixer is connected with the pH adjusting device by a dosing pump. The system is small in covering area, convenient to run, low in processing cost and the like.

Description

technical field [0001] The invention belongs to the field of sewage treatment, and in particular relates to a novel excess sludge cell wall breaking system and a method thereof. Background technique [0002] Activated sludge method is currently the most widely used sewage biological treatment technology in the world, but its disadvantage is that it will produce a large amount of surplus activated sludge. These excess activated sludge usually contain a certain amount of toxic and harmful substances (such as parasite eggs, pathogenic microorganisms, heavy metals) and unstabilized organic matter. If not properly treated and disposed of, it will cause direct or potential pollution to the environment. . [0003] Activated sludge is a general term for microbial groups and the organic and inorganic substances they are attached to. Microbial groups mainly include bacteria, protozoa and algae. Among them, bacteria and protozoa are the two main categories. From the appearance, act...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/00
Inventor 倪明亮黄光华张科
Owner SCIMEE TECH & SCI CO LTD
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