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Sludge dewatering device

A sludge dehydration and dewatering hole technology, which is applied in the direction of dehydration/drying/concentrated sludge treatment, can solve the problems of high energy consumption for water evaporation, low work efficiency, secondary pollution, etc., and achieve low-cost sludge treatment and increase High dehydration efficiency and dehydration degree

Active Publication Date: 2012-10-03
徐凌
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

They respectively have the following defects: belt filter press dehydrator, centrifugal dehydrator, difficult sludge post-processing, large transportation volume, and easy leakage, occupying a large area during landfill, and easy to produce secondary pollution , if it is used for incineration, a large amount of water in the sludge evaporates in the furnace, the flue gas is large, the pollutant discharge is also large, the tail of the boiler is corroded seriously, and the evaporation of a large amount of water consumes a lot of energy, and the treatment cost is high. Sludge treatment Ability is also limited
The sludge dehydration rate of the plate and frame dehydrator can be 50%~60%, and the working efficiency is low. The general pressing time is about 2~4 hours, and the single treatment time is long. The sludge treatment capacity cannot meet the urban sewage treatment. Factory use requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Such as figure 1 and Figure 8 As shown, this embodiment discloses a sludge dewatering device, which includes a cavity side wall 4, a movable plunger 7 that can reciprocate and slide in the cavity side wall 4, and a movable plunger driver 17. A set of dewatering holes 7c is provided; a mud pushing assembly for preventing the dewatering holes from being blocked is provided at the rear end of the movable plunger 7, and the rear end refers to the end of the movable plunger 7 that does not directly contact with the sludge. The mud pushing assembly includes a set of ejector rods 8, ejector rod fixing plates 9 and ejector rod drivers 11; each ejector rod 8 is located in the corresponding dewatering hole 7c, and the ejector rod fixing plate 9 is used to fix the ejector rods 8, And driven by the push rod driver 11, the push rod is driven to reciprocate in the dewatering hole. The movable plunger driver 17 and the ejector rod driver 11 can move separately according to their wo...

Embodiment 2

[0036] Such as figure 2 As shown, the difference between this embodiment and Embodiment 1 is that the cavity side wall 4 is divided into two parts: a fixed part 4a and a movable part 4b, and a fixed plunger 2 located opposite to the movable plunger is arranged in the fixed part 4a. , There is also a set of dehydration holes on the fixed plunger. One side of the movable part 4 b is provided with a water outlet hole 19 , and the movable part 4 b is connected to the cavity driver 16 through the cavity connecting plate 6 . Thus, the fixed plunger 2 is added as a dewatering part, which improves the dehydration efficiency. The dehydration hole of the fixed plunger can be set to correspond to the position of the dehydration hole of the movable plunger. The mud pushing assembly behind the movable plunger can be the same, yes The push rod extends into the dewatering hole of the fixed plunger, thereby realizing the dredging of the dewatering hole of the fixed plunger. Dividing the si...

Embodiment 3

[0040] Such as image 3 As shown, the difference between this embodiment and Embodiment 1 is that the chamber driver 16 and the chamber connecting plate 6 in Embodiment 1 are omitted, and the structure of the fixed chamber side wall 4 is adopted. Further, a sludge discharge port and a sludge discharge valve 21 are provided on the side wall 4 of the cavity, and the treated sludge block 22 is taken out by opening the sludge discharge valve 21 .

[0041] Furthermore, in this embodiment, in the side wall 4 of the cavity, a fixed plunger 2 connected to the front fixed plate 1 is provided on the opposite side to the movable plunger, and a group of dehydration holes are also provided on the fixed plunger. After the plunger is fixed, a ejector rod fixing plate 5 is provided, and a group of ejector rods 12 corresponding to the dewatering holes of the fixed plunger are arranged on the ejector rod fixing plate 5, and the ejector rods 12 are located in the dehydration holes. The number o...

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Abstract

The invention discloses a sludge dewatering device which comprises a cavity body, a movable plunger and a movable plunger driver, wherein the movable plunger is capable of sliding in the cavity body to and fro; a group of dewatering holes are arranged on the movable plunger; a sludge pushing component which is used for preventing the dewatering holes from being blocked is arranged at the rear end of the movable plunger and the rear end is far away from the sludge; the sludge component comprises a group of ejector pins, ejector pin fixing plates and ejector pin drivers; each ejector pin is located in a corresponding dewatering hole; and the ejector pin fixing plates are used for fixing the ejector pins and driving the ejector pins to reciprocate in the dewatering holes under the driving of the ejector pin drivers. The efficient sludge dewatering device disclosed by the invention combines the advantages of plate frame type and belt type filter presses, has the advantages of rapid sludge dewatering efficiency and high dewatering degree, and is capable of finishing the circular dewatering of sludge within 2 minutes.

Description

technical field [0001] The invention relates to an environmental protection treatment device, in particular to a sludge dewatering device used for treating sewage in cities and industrial enterprises. Background technique [0002] As a regular product of urban treatment plants and sewage treatment stations of industrial enterprises, sludge plays an important role in the process of energy saving, emission reduction and ecological construction. It is composed of microbial cell groups and their disintegration products. In addition to high organic matter content, It also contains a large amount of heavy metal ions, pathogenic bacteria and other harmful substances, and has the characteristics of high water content, large volume, complex shape, and difficult transportation. If the sludge is not treated and disposed of in time, it will threaten human life from three aspects: air, groundwater and the food chain. The original serious water pollution problem has not been solved, but h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/12
Inventor 于国强
Owner 徐凌
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