CN204952365U - A subsider for water treatment solid -liquid separation - Google Patents

Abstract

The box body of this device is provided with a stirring area, a settling area and a sludge chamber in sequence from the water inlet to the water outlet. The settling zone is divided into an upper zone, a middle zone and a lower zone by horizontally arranged porous partitions and support plates, the upper zone, the middle zone and the lower zone are vertically arranged, and inclined plates or inclined tubes are arranged in the upper zone As a settling acceleration device, the inclined plate or inclined tube is fixed above the support plate, the outlet of the stirring zone is connected to the entrance of the lower zone of the settling zone, and the middle zone of the settling zone communicates with the sludge chamber through the overflow port, The upper area of the settling area communicates with the sludge chamber, and the box is provided with a water outlet on the side wall above the sludge chamber, and the box is provided with a water outlet on the side wall at the bottom of the sludge chamber. There is a sludge discharge port in the sludge chamber. The utility model has a compact structure, improves the settling performance of the suspended matter in the water, and reduces the suspended matter in the effluent.

Description

Settling tank for solid-liquid separation in water treatment

technical field

The utility model relates to a settling tank used for solid-liquid separation in water treatment.

Background technique

Sedimentation equipment with inclined plates or inclined tubes is widely used for solid-liquid separation in water supply and drainage treatment. It uses the principle of shallow sedimentation to separate suspended solids in water whose specific gravity is larger than that of water, thereby reducing the turbidity of water. It has the advantages of simple structure, no wearing parts, durable and easy maintenance. However, for some water quality or due to the poor flocculation performance of suspended solids in water, the suspended solids in water are very small, or the loose specific gravity of suspended solid flocs is small. Very slow, so that the suspended solids are not separated cleanly, resulting in high turbidity of the effluent.

Utility model content

The purpose of the utility model is to overcome the deficiencies of the prior art and provide a settling tank for solid-liquid separation of water treatment which has a compact structure, improves the settling performance of suspended matter in water, and reduces suspended matter in effluent water.

In order to achieve the above object, the technical solution adopted in the utility model is:

A settling tank for solid-liquid separation in water treatment, comprising a box, the box is sequentially provided with a stirring zone, a settling zone and a sludge chamber from a water inlet to a water outlet, and the water inlet of the box is set at the stirring Above the zone, the stirring part of the stirring device is arranged in the stirring zone, and the settling zone is divided into an upper zone, a middle zone and a lower zone by a horizontally arranged porous partition and a support plate, and the upper zone, the middle zone and the lower zone Arranged vertically, the upper area is arranged with inclined plates or inclined tubes as a settling acceleration device, the inclined plates or inclined tubes are fixed above the support plate, the outlet of the stirring area is connected with the entrance of the lower area of the settling area, and the The middle area of the settling area communicates with the sludge chamber through the overflow port, the upper area of the settling area communicates with the sludge chamber, and the box body is provided with a water outlet of the box body on the side wall above the sludge room, The box body is provided with a sludge chamber sludge outlet on the side wall of the bottom of the sludge chamber, and the box body is provided with a sedimentation area mud outlet at the bottom of the sedimentation area.

The porous separator is covered with permeable holes, and the diameter of the permeable holes is 5-20mm.

The stirring zone and the lower zone of the settling zone form an "L" shape.

The stirring area is provided with a flocculant feeding port.

Due to the adoption of the above scheme, the utility model uses the porous partition arranged in the settlement area. After the sewage is stirred by the stirring device, it needs to pass through the porous partition when it enters the inclined plate or the inclined pipe. A large amount of sludge will accumulate to form a sludge bed. Therefore, when water containing suspended matter passes through the sludge bed, due to the same-phase flocculation, the high-concentration sludge bed quickly accelerates the agglomeration of suspended particles in the influent. At the same time, due to the effect of particle capture, the fine particles in the water are gathered into large flocs. In this way, when the particles pass through the sludge bed, all the particles become larger, so that the sedimentation velocity of the suspended solids in the water becomes larger, which is conducive to the settlement on the subsequent inclined plate or inclined tube, which will greatly reduce the amount of water in the effluent. The content of suspended solids makes the effluent clearer. Since the settling performance of suspended solids in water is greatly improved, the occupied area of inclined plate or inclined tube sedimentation will be greatly reduced, and the equipment will be more compact.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is a top view of the utility model.

In the figure, 1. Water inlet; 2. Stirring device; 3. Porous partition; 4. Inclined plate or inclined pipe; 5. Support plate; 6. Overflow port; 7. Water outlet; 8. Sludge chamber discharge Mouth; 9, sedimentation zone mud outlet; 10, box; 11, permeable hole.

detailed description

Below in conjunction with accompanying drawing, the specific implementation manner of this patent is described in further detail.

As shown in Figures 1 and 2, a settling tank for solid-liquid separation in water treatment includes a box body 10, and the box body 10 is sequentially provided with a stirring zone, a settling zone and a sludge tank from the water inlet 1 to the water outlet 7 chamber, the water inlet 1 of the box 10 is set above the stirring zone, the stirring part of the stirring device 2 is arranged in the stirring zone, and the settling zone is divided into an upper zone by a horizontally arranged porous partition 3 and a support plate 5 , the middle area and the lower area, the upper area, the middle area and the lower area are vertically arranged, and the porous separator 3 is covered with water-permeable holes 11, and the diameter of the water-permeable holes 11 is 5-20mm. An inclined plate or inclined tube 4 is arranged as a settling acceleration device, and the inclined plate or inclined tube 4 is fixed on the support plate 5 above the porous partition, and the outlet of the stirring zone is connected with the lower zone inlet of the settling zone, and the The middle area of the settling area communicates with the sludge chamber through the overflow port 6, the upper area of the settling area communicates with the sludge chamber, and the box body 10 is provided with an outlet of the box body on the side wall above the sludge room. Water outlet 7, the box body 10 is provided with a sludge chamber sludge outlet 8 on the side wall of the bottom of the sludge chamber, and the box body 10 is provided with a sedimentation area mud outlet 9 at the bottom of the settlement area. The stirring area is provided with a flocculant feeding port.

The principle of this device is as follows:

When the treated water enters the inclined plate or inclined tube 4 sedimentation tank from the water inlet 1, after being stirred by the stirring device 2 by adding flocculant, it enters through the porous partition 3, because a large amount of water is accumulated in the porous partition 3 Sludge forms a sludge bed. When water containing suspended matter passes through the sludge bed, due to the action of flocculants, the high-concentration sludge bed rapidly accelerates the agglomeration speed of suspended particles in the influent, and at the same time due to the The effect of capture is to gather the fine particles in the water into large flocs. In this way, when the particles pass through the sludge bed, all the particles become larger, so that the sedimentation speed of the suspended solids in the water becomes larger, which is conducive to the settlement on the subsequent inclined plate or inclined tube.

When there is a lot of sludge in the sludge bed in the inclined plate or inclined tube settling tank, which is higher than the height of the overflow port 6, it will automatically overflow into the chamber on the right, and the sludge chamber discharge port 8 will be opened regularly to discharge the sludge. Get rid of it in time. In order to avoid the long-term deposition of sludge in the lower chamber of the porous partition 3 to block the flow channel, it is necessary to periodically open the sludge discharge port 9 in the settling area to discharge part of the sludge in time. The water settled by the sloping plate or the inclined tube becomes clear liquid, which is then discharged from the running water outlet 7.

Claims (5)

1. A settling tank for solid-liquid separation in water treatment, comprising a casing, characterized in that: the casing is sequentially provided with a stirring zone, a settling zone and a sludge chamber from the water inlet to the water outlet, and the casing The water inlet is set above the stirring zone, and the stirring part of the stirring device is arranged in the stirring zone, and the settling zone is divided into an upper zone, a middle zone and a lower zone by a horizontally arranged porous partition and a support plate, and the upper zone , the middle area and the lower area are vertically arranged, and the upper area is arranged with inclined plates or inclined tubes as the sedimentation acceleration device, and the inclined plates or inclined tubes are fixed above the support plate, and the outlet of the stirring area is connected with the lower part of the settling area. zone entrance, the middle zone of the settling zone communicates with the sludge chamber through the overflow port, the upper zone of the settling zone communicates with the sludge chamber, and the box body is provided with a The water outlet of the box body, the box body is provided with a sludge room sludge discharge port on the side wall of the bottom of the sludge room. 2 . The settling tank for solid-liquid separation in water treatment according to claim 1 , characterized in that: the tank body is provided with a settling area sludge outlet at the bottom of the settling area. 3 . 3. The settling tank for solid-liquid separation in water treatment according to claim 1 or 2, characterized in that: the porous separator is covered with permeable holes, and the diameter of the permeable holes is 5-20 mm. 4. The settling tank for solid-liquid separation in water treatment according to claim 3, characterized in that: the stirring zone and the lower zone of the settling zone form an "L" shape. 5 . The settling tank for solid-liquid separation in water treatment according to claim 4 , characterized in that: the stirring zone is provided with a flocculant inlet. 5 .