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High-dryness sludge dewatering and filter pressing device, system and method

A technology for sludge dehydration and high dryness, applied in chemical instruments and methods, water/sludge/sewage treatment, dehydration/drying/thickened sludge treatment, etc., can solve the problem of not being able to improve sewage filtration efficiency and high sludge Dryness dehydration, poor energy saving effect, interference data instability and other issues

Active Publication Date: 2021-05-18
SHANDONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The common high-pressure sludge filter press generally focuses on setting a fixed action time control method when filtering sludge and dewatering treatment, which cannot improve the sewage filtration efficiency and high-dryness dehydration of sludge. At the same time, the energy-saving effect poor
In addition, the common filter press system relies on a single detection of the flow meter module, and the system faces instability caused by interference data

Method used

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  • High-dryness sludge dewatering and filter pressing device, system and method
  • High-dryness sludge dewatering and filter pressing device, system and method
  • High-dryness sludge dewatering and filter pressing device, system and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0083] Such as image 3 As shown in Figure a and Figure B, it is a structural diagram of a high-dryness sludge dewatering filter press device, including an outer cylinder, a cylindrical cavity structure with one end open, and several filter plates inside; the front baffle, Located on the side opposite to the open end of the outer cylinder, the outer cylinder cooperates with the front baffle to form a sealed filter chamber; the main hydraulic cylinder is connected with several filter plates inside the outer cylinder; the auxiliary hydraulic cylinder is located on one side of the outer cylinder, Connect with the outer wall of the outer cylinder.

[0084] The front baffle is used to limit the position of the outer cylinder when it moves forward. When the outer cylinder advances to the position of the front baffle, the outer cylinder and the front baffle are combined into a closed space, and the system injects sewage into this space to realize the solid-liquid separation of sewage...

Embodiment 2

[0094] Such as figure 2 Shown is the running structure diagram, Figure 4 Shown is the control connection structure diagram of the dehydration filter press system, such as Figure 8 Shown is a structural diagram of the filter press system, including the filter press device of embodiment 1, information detection module, transmission module, and main control module, and the filter press device is connected with the information detection module, transmission module, and main control module in turn; the information detection module It is suitable for reading the information of flow data, position limit and pressure limit, and transmits the information to the transmission module; the transmission module is suitable for transmitting the information to the main control module; the main control module receives the information, processes the information, and obtains As a result, an order is issued.

[0095] After the sewage enters the filter press device, the information detection m...

Embodiment 3

[0115] The method of high-dryness sludge dewatering and pressure filtration, the process is as follows Figure 7 shown. It specifically includes the process of feeding, filtering, dehydrating, removing residual water, and unloading.

[0116] Feeding process:

[0117] Such as Figure 9 As shown in the feeding work flow chart, it is judged whether the outer cylinder of the filter press is closely connected with the front baffle before the feeding action starts, and it is judged by detecting the pressure value of the auxiliary hydraulic cylinder. If the detected pressure is lower than the set lower limit, the system needs to control the outer cylinder to advance to make it higher than the set pressure upper limit, then open the inlet valve and outlet valve, and turn on the timer at the same time. At this time, the valve has been fully opened, the timer is turned off, and the feed pump is turned on at the same time, and sewage is started to be injected into the filter press at ...

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Abstract

The invention belongs to the technical field of filter pressing and sewage treatment, and relates to a high-dryness sludge dewatering and filter pressing device, system and method. The filter pressing device comprises: an outer cylinder having a cylindrical cavity structure with an opening at one end and internally provided with a plurality of filter plates; a front baffle which is positioned on one side opposite to the open end of the outer cylinder, wherein the outer cylinder is matched with the front baffle to form a sealed filter chamber; a main hydraulic cylinder which is connected with a plurality of filter plates in the outer cylinder; an auxiliary hydraulic cylinder, which is located on one side of the outer cylinder and connected with the outer side wall of the outer cylinder. The filter pressing system comprises a filter pressing device, an information detection module, a transmission module and a main control module, the main control module processes water flow data through a moving average filtering algorithm; in addition, a self-adaptive threshold value control algorithm is introduced to determine filtering and filter pressing action time, so that the purposes of purifying sewage, protecting the environment, saving energy, reducing consumption and recycling resources are achieved.

Description

technical field [0001] The invention belongs to the technical field of filter press and sewage treatment, and in particular relates to a high-dryness sludge dewatering filter press device, system and method. Background technique [0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily taken as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] In recent years, with the rapid development of my country's industrial economy, all regions are facing different degrees of water pollution and sewage treatment problems. After sewage treatment, a large amount of sludge will be deposited. If the sludge is not properly treated, it will cause secondary pollution to the environment and have a negative impact on economic development. The task of sludge treatment in our coun...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/12
CPCC02F11/122
Inventor 陈桂友张林川席斌
Owner SHANDONG UNIV
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