CN106830596A - A kind of electric osmose filter frame device for plate and frame filter press - Google Patents

Abstract

The invention discloses a kind of electric osmose filter frame device for plate and frame filter press, including polypropylene filter frame, polypropylene filter frame and be arranged on polypropylene filter frame two sides polypropylene filter plate constitute percolation chamber, the two sides of polypropylene filter plate is provided with filter membrane, polypropylene projection is provided between filter membrane and polypropylene filter plate, the anode fixing end that font anode one end is connected is fixed with and bends on polypropylene filter frame along frame, the lower of polypropylene filter frame is fixed with the negative electrode fixing end being connected with electric osmose filter negative electrode one end along frame, polypropylene filter frame top offers mud intercommunicating pore, the bottom inside of polypropylene filter plate is provided with draining intercommunicating pore.The present invention can effectively improve drainage efficiency and drainage effect.

Description

An electrodiafiltration frame device for a plate and frame filter press

technical field

The invention relates to the fields of geotechnical engineering, environmental science and engineering, and more specifically relates to an electrodiafiltration frame device used for a plate and frame filter press. Applicable but not limited to various types of silt, sludge dehydration solidification and solid-liquid separation of various suspensions.

Background technique

In urban construction and environmental protection, silt with high moisture content often needs to be treated. A large amount of silt and sludge often need to be set up in a storage yard and occupy the land for a long time, resulting in a great waste of land resources. At the same time, silt, sludge, Sludge soil also often contains more pollutants such as heavy metals, which can easily cause secondary pollution. At present, the water content standard of mud cake after sludge dewatering in most urban sewage treatment plants is gradually increasing, and the water content of sludge with ultra-high water content (often greater than 100%) needs to be quickly reached to 80% or lower. Increase the solid content. The dehydration effect of the traditional plate and frame filter press is often difficult to reach 50% or less, and the dehydration efficiency is not high. The reason is that after dehydration reaches a certain level, the permeability coefficient of the sludge near the filter membrane decreases, which affects the dehydration efficiency. , increasing energy consumption. Therefore, how to speed up the dehydration rate and improve the dehydration effect is a key issue in the treatment of silt and sludge.

Contents of the invention

The object of the present invention is to provide an electrodiafiltration frame device for a plate and frame filter press to solve the above problems in the prior art. An electroosmotic component is added to the electrodiafiltration frame, and when the permeability coefficient of sludge decreases, it can effectively improve the movement of water from the anode of the soil to the vicinity of the negative electrode, and then discharge through the drainage holes, effectively increasing the dehydration rate and achieving better The dehydration effect of the device is simple, the device is easy to operate, the application range is wide, the separation effect is good, and it has a wide application prospect.

Above-mentioned purpose of the present invention is achieved through the following technical solutions:

An electrodiafiltration frame device for a plate and frame filter press, comprising a polypropylene filter frame, the polypropylene filter frame and polypropylene filter plates arranged on both sides of the polypropylene filter frame to form a percolation chamber, the two sides of the polypropylene filter plate Both are equipped with filter membranes, and polypropylene bumps are arranged between the filter membrane and the polypropylene filter plate. The upper edge of the polypropylene filter frame is fixed with an anode fixed end connected to the bow-shaped anode end, and the lower edge of the polypropylene filter frame A cathode fixing end connected to one end of the electrodiafiltration cathode is fixed along the frame, a mud communication hole is provided on the top of the polypropylene filter frame, and a drainage communication hole is provided on the bottom inner side of the polypropylene filter plate.

The top of the polypropylene filter plate is provided with a mud inlet hole communicating with the mud communicating hole, and the bottom of the polypropylene filter plate is provided with a drainage outlet hole communicating with the drainage communicating hole.

The outlet hole is provided at the bottom of the polypropylene filter frame as described above, the outlet hole is connected to the drainage outlet hole, the anode fixed end is connected to one end of the anode wire, and the other end of the anode wire passes through the mud communication hole and the mud inlet hole in turn. It is connected to the anode of the rectifier, the cathode fixed end is connected to one end of the cathode wire, the other end of the cathode wire passes through the outlet hole in turn, and the drainage outlet hole is connected to the cathode of the rectifier, and the outlet hole is sealed by a sealant.

The lower border of the polypropylene filter frame as described above is in the shape of a raised slope in the middle, and the drainage communication holes are close to the slope bottom of the lower border.

The above-mentioned polypropylene bumps between the filter membrane and the polypropylene filter plate are distributed in an array, and the polypropylene bumps in adjacent rows are distributed in a staggered manner.

Compared with the prior art, the invention can effectively improve drainage efficiency and drainage effect.

Description of drawings

Fig. 1 is the front structural schematic diagram of the present invention;

Fig. 2 is a side view sectional structure schematic diagram of the present invention;

Figure 3 is a schematic diagram of the front view of the polypropylene filter plate

In the figure: 1-polypropylene filter frame, 1a-bottom frame, 1b-upper frame, 2-drain outlet hole, 3-bottom harness tube, 4-cathode wire, 5-sealant, 6-electrodiafiltration Cathode, 7-cathode fixed end, 8-half ear plate, 9-mud connecting hole, 10-mud inlet hole, 11-bow-shaped anode, 12-anode fixed end, 13-filtration chamber, 14-anode wire, 15 - Upper harness tube, 16- Rectifier, 17- Polypropylene filter plate, 18- Drainage communication hole, 19- Filter membrane, 20- Polypropylene bump, 21- Bump gap, 22- Silt sludge, 23- Outlet hole.

detailed description

The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings.

Example 1:

As shown in Figures 1 to 3, an electrodiafiltration frame device for a plate and frame filter press includes a polypropylene filter frame 1, a polypropylene filter frame 1 and polypropylene filter plates arranged on both sides of the polypropylene filter frame 1 17 constitutes the percolation chamber 13, the two sides of the polypropylene filter plate 17 are all provided with filter membranes 19, the polypropylene bumps 20 are arranged between the filter membrane 19 and the polypropylene filter plate 17, and the upper border of the polypropylene filter frame 1 1b is fixed with an anode fixed end 12 connected to one end of the bow-shaped anode 11, the lower edge frame 1a of the polypropylene filter frame 1 is fixed with a cathode fixed end 7 connected with one end of the electrodiafiltration cathode 6, and the top of the polypropylene filter frame 1 is provided with The mud communication hole 9 and the bottom inner side of the polypropylene filter plate 17 are provided with a drainage communication hole 18 .

The top of the polypropylene filter plate 17 is provided with a mud inlet hole 10 communicated with the mud communication hole 9 , and the bottom of the polypropylene filter plate 17 is provided with a drainage outlet hole 2 communicated with the drainage communication hole 18 .

The bottom of the polypropylene filter frame 1 is provided with an outlet hole 23, the outlet hole 23 communicates with the drainage outlet hole 2, the anode fixed end 12 is connected to one end of the anode wire 14, and the other end of the anode wire 14 passes through the mud communication hole 9, After the mud enters the hole 10, it is connected to the anode of the rectifier 16, the cathode fixed end 7 is connected to one end of the cathode wire 4, and the other end of the cathode wire 4 passes through the outlet hole 23 in turn, and the drainage outlet hole 2 is connected to the cathode of the rectifier 16, and the outlet hole 23 passes through Sealant 5 is sealed.

The lower edge frame 1a of the polypropylene filter frame 1 is in the shape of a raised slope in the middle, and the drainage communication hole 18 is close to the slope bottom of the lower edge frame 1a.

The polypropylene bumps 20 between the filter membrane 19 and the polypropylene filter plate 17 are distributed in an array, and the polypropylene bumps 20 in adjacent rows are distributed in a staggered manner.

The function of the outlet hole 23 is to pass through the cathode wire 4, and seal the outlet hole 23 with a sealant 5 after the cathode wire 4 passes through, so as to prevent the particles of sludge 22 from passing through.

As shown in Figure 2, the sludge 22 enters the percolation chamber 13 through the mud communication hole 9 and the mud inlet hole 10, and then enters the bump of the polypropylene bump 20 through the filter membrane 19 on the polypropylene filter plate 17. In the gap 21 , the water in the gap 21 of the protrusion gathers in the drainage communication hole 18 on the polypropylene filter plate 17 and is discharged through the drainage hole 2 . Both sides of the polypropylene filter plate 17 are provided with a plurality of polypropylene bumps 20 and filter membranes 19, the filter membrane 19 is attached to the polypropylene bumps 20, and the upper and lower ends of the filter membrane 19 are bonded to the polypropylene filter plate 17 top and bottom of .

As shown in Figure 3, the polypropylene bumps 20 are arranged in a staggered manner, so that the bump gaps 21 are connected to each other, and the pore water penetrates the filter membrane 19 and enters the bump gaps 21, and gathers at the drainage communication hole 18, and passes through the drainage hole 2 discharge.

Preferably, the electrodiafiltration cathode 6 is connected to one end of the cathode wire 4, and the other end of the cathode wire 4 passes through the outlet hole 23 and the drainage outlet hole 2 successively and then gathers in the lower beam tube 3; the anode fixed end 12 is connected to the anode wire 14 at one end, The other end of the anode wire 14 passes through the mud communication hole 9 and the mud inlet hole 10 in sequence and then gathers in the upper beam pipe 15 .

Preferably, there are two mud inlet holes 10, and they are distributed on both sides of the top of the polypropylene filter plate 17, and the number and position of the mud communication holes 9 correspond to the mud inlet holes 10; there are two drainage outlet holes 2, and they are distributed in On both sides of the bottom of the polypropylene filter plate 17, the number and position of the drainage communication holes 18 correspond to the drainage outlet holes 2.

Preferably, the slope of the lower border 1a can be set at 2%~8%.

Preferably, the rectifier 16 is used to convert alternating current into direct current, and the working voltage is 12V~36V;

The working principle of the present invention is that an electric field is constructed in the sludge mud 22 through the bow-shaped anode 11 and the electrodiafiltration cathode 6, so that electroosmosis occurs, and the water in the soil is driven by the bow-shaped anode 11 to the electrodiafiltration The cathode 6 flows, and the lower edge frame 1a of the polypropylene filter frame 1 is also provided with a slope, thereby accelerating the discharge of pore water from the drainage communication hole 18.

Example 2:

Using an electrodiafiltration frame device for a plate and frame filter press described in Embodiment 1, the silt sludge 22 with a moisture content of up to 300% enters the percolation chamber 13 through the mud inlet hole 10 and the mud communication hole 9 , keep the input pressure of the sludge 22 at 0.25 MPa, and at the same time, make the rectifier 16 in a closed state, at this time, the electrodiafiltration cathode 6 and the bow-shaped anode 11 do not participate in the work, and the moisture content of the sludge 22 reaches 65%. The time is about 73 minutes.

Example 3:

Using an electrodiafiltration frame device for a plate and frame filter press described in Embodiment 1, the silt sludge 22 with a moisture content of up to 300% enters the percolation chamber 13 through the mud inlet hole 10 and the mud communication hole 9 , keep the input pressure of the sludge 22 at 0.25 MPa, make the rectifier 16 in the closed state in the first 15 minutes, and turn on the rectifier 16 after 15 minutes, at this time, the electrodiafiltration cathode 6 and the bow-shaped anode 11 generate an electric field in the sludge 22 , to accelerate the removal of pore water, the time required for the water content of the sludge 22 to reach 44% is about 38 minutes.

Effect: the invention can increase the reinforcement efficiency by 47.9%, and the reinforcement effect (moisture content) can be increased by 32.3%.

The specific embodiments described herein are merely illustrative of the invention. Those skilled in the art to which the present invention belongs may make various modifications, supplements or substitutions to the described specific embodiments without departing from the essence of the present invention or exceeding the scope defined in the appended claims.

Claims (5)

1. An electrodiafiltration frame device for a plate and frame filter press, comprising a polypropylene filter frame (1), characterized in that the polypropylene filter frame (1) and the two sides of the polypropylene filter frame (1) The polypropylene filter plate (17) constitutes the percolation chamber (13), the two sides of the polypropylene filter plate (17) are provided with filter membranes (19), and the filter membrane (19) and the polypropylene filter plate (17) are provided with There are polypropylene bumps (20), the upper frame (1b) of the polypropylene filter frame (1) is fixed with an anode fixing end (12) connected to one end of the bow-shaped anode (11), and the polypropylene filter frame (1) The lower edge frame (1a) is fixed with a cathode fixed end (7) connected to one end of the electrodiafiltration cathode (6), the top of the polypropylene filter frame (1) is provided with a mud communication hole (9), and the polypropylene filter plate (17) The inner side of the bottom is provided with drainage communication holes (18). 2. An electrodiafiltration frame device for a plate and frame filter press according to claim 1, characterized in that, the top of the polypropylene filter plate (17) is provided with a communication hole (9) for communicating with the mud The mud inlet hole (10), the bottom of the polypropylene filter plate (17) is provided with a drainage outlet hole (2) communicated with the drainage communication hole (18). 3. An electrodiafiltration frame device for a plate and frame filter press according to claim 2, characterized in that, the bottom of the polypropylene filter frame (1) is provided with an outlet hole (23), and the outlet The hole (23) communicates with the drainage outlet hole (2), the anode fixed end (12) is connected to one end of the anode wire (14), and the other end of the anode wire (14) passes through the mud communication hole (9), mud inlet The hole (10) is connected to the anode of the rectifier (16), the cathode fixed end (7) is connected to one end of the cathode wire (4), and the other end of the cathode wire (4) passes through the outlet hole (23) and the drainage outlet hole (2 ) is connected to the cathode of the rectifier (16), and the outlet hole (23) is sealed with a sealant (5). 4. An electrodiafiltration frame device for a plate-and-frame filter press according to claim 3, characterized in that the lower border (1a) of the polypropylene filter frame (1) is raised in the middle Slope-like, the drainage communication hole (18) is close to the bottom of the slope along the frame (1a). 5. An electrodiafiltration frame device for a plate and frame filter press according to claim 3, characterized in that the polypropylene filter between the filter membrane (19) and the polypropylene filter plate (17) The bumps (20) are distributed in an array, and the polypropylene bumps (20) in adjacent rows are distributed in a staggered manner.