Mud-water separator of secondary sedimentation tank

Abstract

The mud-water separator comprises a box body, the upper end and the lower end of the box body are open, more than two mud baffles are hinged to the interior of the box body from bottom to top, the mud baffles are arranged on the two opposite sides of the box body in a staggered mode, a first fixed pulley is arranged on the side wall of the box body, and a second fixed pulley is arranged on the side wall of the box body. A second fixed pulley and a stranding disc are arranged at the opening part of the box body, a steel wire rope is fixed at one end of the mud guard, and one end of the steel wire rope sequentially penetrates through the first fixed pulley and the second fixed pulley and then is connected with the stranding disc; a cover plate is arranged at the opening part of the box body, and a water outlet is formed in the side wall of the box body. Bubbles carrying sludge in the secondary sedimentation tank enter from the bottom of the box body and are broken after impacting the mud baffle, sludge slides to the bottom of the secondary sedimentation tank along the mud baffle, and supernatant liquid is discharged through the water outlet, so that mud-water separation is realized, and the sewage purification effect is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to secondary sedimentation tank mud water separator belongs to sewage treatment equipment technical field. BACKGROUND

[0002] The effluent scheme of the sedimentation tank in the sewage treatment field of the sewage plant currently is the weir outlet water mode such as triangular weir or rectangular weir for reducing the suspended matter concentration carried by the effluent, but when the sludge in the sedimentation tank has biochemical reaction, gas is produced, and the gas entrains sludge to cause serious floating problem, which often occurs in the secondary sedimentation tank, after the sludge floats, it flows out through the weir plate, and the active sludge suspended matter in the effluent is increased, so that the BOD mass concentration of the effluent is increased, and at the same time, the return sludge concentration is also reduced, so that the mixed liquid concentration in the aeration tank is reduced, and the purification effect is affected. SUMMARY

[0003] The utility model solves the technical problems in the prior art.

[0004] The utility model discloses a secondary sedimentation tank mud water separator, including the cuboid box body, the upper and lower ends of the box body are open, the inside of the box body is hinged with 2 more than one fender from below to above, the fender is staggered and arranged on the opposite two sides of the box body, the first fixed pulley is provided on the side wall of the box body and is located the position above the fender, the second fixed pulley and the winch are provided at the mouth of the box body, the end of the fender away from the side wall of the box body is fixed with the steel wire rope, the end of the steel wire rope away from the fender is connected with the winch after passing the first fixed pulley and the second fixed pulley in proper order, the number of the winch is 2 and is arranged on the opposite two sides of the mouth of the box body, the mouth of the box body is provided with the cover plate, the side wall of the box body is provided with the water outlet and is located the position above the uppermost fender, the fender is provided with the through -hole.

[0005] Preferably, the fender is a stainless steel plate, and the fender is hinged to the box body through a rotating shaft.

[0006] Preferably, the middle part of the cover plate is provided with a transparent observation window.

[0007] Preferably, the observation window is strip-shaped.

[0008] Preferably, the cover body and the box body are detachably connected.

[0009] The utility model has the advantages of the following:

[0010] 1. Compared with the prior art, this utility model achieves sludge-water separation by allowing air bubbles carrying sludge in the secondary sedimentation tank to enter from the bottom of the box. After impacting the baffle plate, the air bubbles burst, and the sludge slides down the baffle plate to the bottom of the secondary sedimentation tank. The air bubbles are discharged upward through the through holes in the baffle plate, and the upper clear liquid is discharged through the outlet. This reduces the suspended solids of activated sludge in the effluent, thereby reducing the BOD concentration of the effluent. At the same time, the concentration of returned sludge increases, thereby increasing the concentration of mixed liquor in the aeration tank and improving the wastewater purification effect.

[0011] 2. Compared with the prior art, the angle of the mudguard is adjusted by the two left and right twisted discs on the top of the box. The angle of the mudguard can be adjusted as a whole according to the actual situation, thereby adjusting the mud-water separation effect. Moreover, it can be operated only at the inlet of the secondary sedimentation tank, which is convenient for adjusting the angle of the mudguard.

[0012] 3. Compared with the prior art, in this utility model, the cover is installed on the cover of the secondary sedimentation tank, eliminating the need to enter the interior of the secondary sedimentation tank to install this utility model, making installation convenient. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0014] The reference numerals in the accompanying drawings of the instruction manual include: 1. Box body; 2. Mudguard; 3. Steel wire rope; 4. First fixed pulley; 5. Second fixed pulley; 6. Winding reel; 7. Handle; 8. Cover plate; 9. Observation window; 10. Water outlet. Detailed Implementation

[0015] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0016] Example 1:

[0017] Secondary sedimentation tank sludge-water separator, such as Figure 1 As shown, the device includes a rectangular box 1 with openings at both the top and bottom. Inside the box 1, seven mudguards 2 are arranged from bottom to top, staggered on the left and right sides to form baffles. The mudguards 2 are hinged to the box 1 via pivots. The mudguards 2 are made of stainless steel and have 1mm diameter through holes. A first fixed pulley 4 is located above each mudguard 2 on the side wall of the box 1. A second fixed pulley 5 and a winch 6 are located at the left and right ends of the opening of the box 1, respectively. The winch 6 has a backflow prevention mechanism. A steel wire rope 3 is fixed to the end of each mudguard 2 away from the side wall of the box 1. The end of the steel wire rope 3 passes through the first fixed pulley 4 and the second fixed pulley 5 before connecting to the winch 6. An outlet 10 is located above the topmost mudguard 2 on the side wall of the box 1.

[0018] The air bubbles carrying sludge in the secondary sedimentation tank enter from the bottom of the box 1, and after hitting the baffle 2, the air bubbles burst. The sludge slides down the baffle 2 to the bottom of the secondary sedimentation tank, and the air bubbles are discharged upward through the through holes on the baffle 2. The upper clear liquid is discharged through the outlet 10, thus achieving mud-water separation.

[0019] The mudguard 2 tilts downwards under its own weight, and is pulled upwards by the steel wire rope 3. The angle of the left mudguard 2 is adjusted synchronously by rotating the handle 7 of the left winch 6, and the angle of the right mudguard 2 is adjusted synchronously by rotating the handle 7 of the right winch 6. The overall angle of the mudguard 2 is adjusted according to the actual situation, thereby regulating the mud-water separation effect. This adjustment can be easily performed at the inlet of the secondary sedimentation tank.

[0020] The opening of the box body 1 is provided with a rectangular cover plate 8, which is connected to the box body 1 by bolts, making it easy to open the cover for internal installation and maintenance. A transparent observation window 9 is provided in the middle of the cover plate 8. The observation window 9 is long and narrow, allowing staff to easily observe the contents.

[0021] The cover is installed on the cover of the secondary sedimentation tank, eliminating the need to enter the interior of the secondary sedimentation tank for installation, making it easy to install.

[0022] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A sludge-water separator for a secondary sedimentation tank, characterized in that: The device includes a rectangular box with openings at both the top and bottom. Inside the box, two or more mudguards are hinged from bottom to top, staggered on opposite sides of the box. A first fixed pulley is located on the side wall of the box above the mudguards. A second fixed pulley and a winch reel are located at the opening of the box. A steel wire rope is fixed to the end of each mudguard away from the side wall of the box. The end of the steel wire rope away from the mudguard passes through the first and second fixed pulleys and connects to the winch reel. Two winches are located on opposite sides of the opening of the box. A cover plate is provided at the opening of the box. A water outlet is located on the side wall of the box above the uppermost mudguard. Through holes are provided on the mudguards.

2. The secondary sedimentation tank sludge-water separator according to claim 1, characterized in that: The mudguard is made of stainless steel and is hinged to the box body via a pivot.

3. The secondary sedimentation tank sludge-water separator according to claim 1, characterized in that: A transparent observation window is provided in the middle of the cover plate.

4. The secondary sedimentation tank sludge-water separator according to claim 3, characterized in that: The observation window is elongated.

5. The secondary sedimentation tank sludge-water separator according to claim 1, characterized in that: The cover plate is detachably connected to the box body.

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