CN202237404U - Small-size sewage treatment boat form sedimentation tank device - Google Patents

Abstract

The utility model discloses a small-sized sewage treatment boat-type sedimentation tank device, which comprises a boat body, wherein the boat body comprises a water inlet area, a sedimentation area and a water outlet area, wherein the water inlet area is internally provided with at least one water inlet and a flow baffle plate, and the lower end of the flow baffle plate is positioned below the water inlet; a sludge discharge bottom plate communicated with the outside is arranged at the bottom of the hull of the settling zone, and an inclined plate assembly is arranged above the sludge discharge bottom plate; the water outlet area is provided with at least one water outlet. The utility model discloses do not produce the mud come-up, cooperation swash plate precipitation or pipe chute precipitation, the suspended solid concentration SS of play water is more stable. The SS of the effluent can be controlled within 15 mg/L. And no power equipment is needed, so that maintenance is not needed. The biological pond is arranged in, a secondary sedimentation pond is not required to be built, head loss is almost avoided, and the construction cost and the land area are greatly reduced by adopting a high-efficiency and small boat-type sedimentation device.

Description

A small sewage treatment ship type sedimentation tank device

technical field

The utility model relates to a sewage treatment device, in particular to a small sewage treatment ship-type settling tank device.

Background technique

The integrated oxidation ditch sewage treatment process is currently used for small-scale sewage treatment. The solid-liquid separation device of this process is mainly of the ship type, but the ship is generally large in size, large in floor space, high in construction and operation costs, long in residence time, and low in treatment capacity. , poor mud discharge from the mud hopper, and "mud running" in the outlet weir. Equipped with rotary brush aerators, there are problems such as high noise and low treatment efficiency. There is an urgent need for small, efficient, less equipment, low cost, and no need to manage mud-water separation facilities. It is especially suitable for the mud-water separation device of scattered rural sewage and various small and medium-sized enterprise sewage treatment stations.

Utility model content

The purpose of this utility model technology is to solve the problem of mud-water separation in small boat-shaped sedimentation devices for rural sewage and various small and medium-sized enterprises' sewage treatment, and to provide an efficient, economical, practical, reliable and small-scale rural sewage treatment boat-shaped sludge sedimentation device.

In order to achieve the above object, the utility model adopts the following technical solutions:

A small-scale sewage treatment ship-type sedimentation tank device includes a hull, and the hull includes a water inlet area, a sedimentation area and a water outlet area, and is characterized in that:

The water inlet area is provided with at least one water inlet and a baffle, wherein the lower end of the baffle is located below the water inlet;

The bottom of the hull in the settling area is provided with a mud discharge bottom plate connected to the outside, and a sloping plate assembly is arranged above the mud discharge bottom plate;

The water outlet area is provided with at least one water outlet.

In a preferred embodiment of the present utility model, the water inlet of the water inlet area is arranged below the water surface line.

In a preferred embodiment of the present utility model, the water inlet is in the shape of a round hole, which has one or more.

In a preferred embodiment of the present utility model, the distance between the lower end of the deflector and the bottom plate of the hull is greater than 30 cm.

In a preferred embodiment of the present invention, the front plate of the mud discharge bottom plate is under the rear plate, forming a staggered structure.

In a preferred embodiment of the present utility model, the gap between the mud discharge bottom plates is 2-5cm.

In a preferred embodiment of the present utility model, the slope of the mud discharge floor is 45-75 degrees.

In a preferred embodiment of the present utility model, the inclination angle of the inclined plate is 60-80 degrees.

In a preferred embodiment of the present utility model, the water outlet of the water outlet area adopts a triangular weir or a water pipe with holes 5 cm below the water surface.

In a preferred embodiment of the present invention, the device further includes a cover.

The principle of the sedimentation ship provided by the utility model: according to the characteristics of the water flow, different flow velocities are generated by changing the interception area of the flow channel, resulting in jet suction, accelerating sludge sedimentation and separation of mud and water, and the separated sludge returns directly to the oxidation ditch system without Adding power and adding a cover can avoid the phenomenon of green algae breeding on the surface of the boat-shaped sedimentation tank. It is a new mud-water separation technology.

Compared with the prior art, the beneficial effects of the utility model are:

1. There is no sludge floating, and with inclined plate sedimentation or inclined tube sedimentation, the SS concentration of suspended solids in the effluent is more stable. The effluent SS can be controlled within 15mg/L.

2. Since there is no power equipment, no maintenance is required.

3. Placed in the biological pool, there is no need to build a secondary sedimentation tank, and there is almost no head loss. The high-efficiency and small-scale boat-type sedimentation device is used to greatly reduce construction costs and land area.

4. The sludge is directly in the oxidation ditch, and the system does not need external reflux and does not need to be equipped with a reflux sludge pump. The sludge concentration of the biochemical pool can reach more than 10000mg/L, and the processing capacity and impact resistance are greatly improved.

5. The sedimentation vessel is small in size, far smaller than the length and various technical requirements of the existing advection sedimentation tank, simple in structure, easy to manufacture and low in cost.

6. Jet aeration can be installed under the sedimentation vessel, which does not affect the sedimentation effect; when aeration is not performed, it is an anoxic zone to use the system to remove nitrogen and phosphorus. In addition, due to the rapid discharge of mud, phosphorus is basically not released in the sedimentation tank, which is conducive to the total phosphorus in the effluent reaching the standard.

7. Equipped with an automatic slag discharge device, there is basically no need to manually clean up the scum, and the pool surface is clean.

8. It can be fully covered, the facilities are safe, and the landscape is beautiful.

Description of drawings

Fig. 1 is the top view structure schematic diagram of the small sewage treatment ship-type settling tank device of the present utility model;

Fig. 2 is a schematic cross-sectional structure diagram of a small sewage treatment ship-type sedimentation tank device of the present invention.

In the figure, arrow b indicates the direction of water flow, and a-a indicates the water surface line.

Detailed ways

Referring to Fig. 1 and Fig. 2, a kind of small sewage treatment ship-type sedimentation tank device of the utility model comprises a hull, and this hull is successively divided into water inlet area A, sedimentation area B and water outlet area C along the direction of water flow. Water inlet 1 and deflector 2 are set in water inlet area A; bottom mud discharge plate 3, inclined plate assembly 4 and cover plate 8 are set in sedimentation area B; slag retaining plate 7, slag discharge pipe 5 and water outlet pipe are set in water outlet area C 6.

The entire hull is 32 meters long, 12 meters wide and 0.7 meters high. The water inlet 1 is located at the bow of the ship, which is consistent with the direction of water flow in the oxidation ditch. The supernatant overflows into the effluent area, and the effluent is discharged into the disinfection tank through the pipeline or can be built together with the biological filter cloth filter, activated carbon filter, ultrafiltration membrane filter, etc., for further advanced treatment, small boat type sedimentation tank treatment The capacity reaches 100 tons/day. The material of the small sewage treatment ship-type sedimentation tank is generally steel plate: because the hull is not stressed, it can be welded with 1-2mm stainless steel plate and stainless steel angle steel or 2-3mm glass fiber reinforced plastic; it can also be made of ordinary angle steel plus iron plate , but it should be well preserved.

The water inlet 1 is arranged on one side of the hull, underwater, mainly in order to reduce the garbage entering the sedimentation ship. In the present embodiment, a uniform punching pattern is adopted, and the diameter of the hole is 2 cm, so as to reduce the floating garbage entering the ship. The oxidation ditch adopts the runway type to minimize disturbance to the hull except for the water flow direction; the water inlet direction is the same as the water flow direction of the oxidation ditch.

The deflector 2 is located inside the hull, about 20 centimeters away from the water inlet 1. According to the characteristics of the water flow, it is designed along the flow to reduce the agitation as much as possible. Agitation of the supernatant and agitation of the settled sludge. In this embodiment, it is more than 35 centimeters.

Mud-discharging floor 3, the mud-discharging plate at the bottom of the lower part of the hull should pay attention to water and air vibrations. The previous plate must be under the rear plate to form a staggered structure. The gap should be as small as possible, generally controlled at 2-5 cm. In an example, the distance between the front board 31 and the rear board 32 is 4 cm. The bottom of the ship in the sedimentation area is composed of 10 mud discharge bottom plates 3 communicating with the oxidation ditch. Each bottom plate 3 is in a bent shape, including the front half and the back half. The slope of the mud discharge bottom plate is 60 degrees, and the mud discharge plate should be designed to extend to the outside of the ship, otherwise disturbance will easily occur, and in serious cases, the gas will overflow from the ship and cannot be deposited.

The design of the inclined plate 4 basically eliminates the "bubbling" area in the sedimentation vessel, so that the water flow in the sedimentation vessel remains stable. In this embodiment, the length of the inclined plate is 50 cm, and the inclination angle is 75 degrees. The components of the inclined plate 4 are fixed on the bottom row On clay tablet 3. In another embodiment, the slant plate 4 can also be designed as a slant tube.

The slag discharge pipe 5, because it is only considered for slag discharge, it is ideal to use a triangular or rectangular mouth design (the mouth should not be large or the water output will be too large, which will affect the processing capacity) to receive the floating sediment or debris on the sedimentation surface, which needs to form a drop. In order to ensure the slag removal effect. In this embodiment, the slag discharge pipe 5 has two rectangular openings.

Outlet pipe 6 adopts porous water pipe to directly take 5cm water outlet under the water surface, which can guarantee the water quality of outlet water. In another embodiment, triangular weirs may be used. Near the outlet pipe 6, a slag retaining plate 7 is also provided.

The boat-type sedimentation process of the utility model is as follows: the activated sludge enters the sedimentation tank from the water inlet 1, and the suspended sludge concentration of the boat-type sedimentation tank is controlled to 4000mg/L. Under the action of the rectifying plate 2, it flows downward and the flow rate drops rapidly , and under the action of gravity, the muddy water begins to separate, and the separated activated sludge settles to the bottom of the ship, and the activated sludge is discharged through the bottom mud discharge plate 3 driven by the high-speed water flow at the bottom of the ship, without causing the sludge to float up, and re- Back to the oxidation ditch. The hull is equipped with an inclined plate assembly 4, which increases the settlement area and improves the separation efficiency of mud and water. Driven by the water outlet, the supernatant liquid gradually passes through the sedimentation of the inclined plate to further separate mud and water. The surface scum is discharged out of the pool through the slag discharge pipe 5 to ensure the stability of the effluent water quality.

The utility model can also carry out some deformations according to the shape of the pool, for example: a circular shape (concentric garden), a plurality of boat-type sedimentation tanks connected in series or the like.

The utility model can be built together with biological filter cloth filter, activated carbon filter, ultrafiltration membrane filter, etc., further advanced treatment, and through the mud-water separation of the ship-type sedimentation tank, the water load of the ship-type sedimentation tank is reduced, and the water body is reduced. impact on biofilters.

The above is only a specific embodiment of the present utility model, but the design concept of the present utility model is not limited thereto, and any insubstantial modification of the utility model by using this concept shall be an act of violating the protection scope of the present utility model .

Claims (10)

1. A small-scale sewage treatment ship type sedimentation tank device, comprising a hull, said hull comprising a water inlet area, a settling area and a water outlet area, characterized in that: The water inlet area is provided with at least one water inlet and a baffle, wherein the lower end of the baffle is located below the water inlet; The bottom of the hull in the settling area is provided with a mud discharge bottom plate connected to the outside, and a sloping plate assembly is arranged above the mud discharge bottom plate; The water outlet area is provided with at least one water outlet. 2. A small sewage treatment ship-type sedimentation tank device according to claim 1, characterized in that: the water inlet of the water inlet area is set below the water surface line. 3. A small sewage treatment ship-type sedimentation tank device as claimed in claim 2, characterized in that: said water inlet is in the shape of a round hole, which has one or more. 4. A small sewage treatment ship-type sedimentation tank device as claimed in claim 1, characterized in that: the distance between the lower end of the deflector and the bottom plate of the hull is greater than 30 cm. 5. A small sewage treatment ship-type sedimentation tank device as claimed in claim 1, characterized in that: the front plate of the mud discharge floor is below the rear plate, forming a staggered structure. 6. A small sewage treatment ship-type sedimentation tank device as claimed in claim 1, characterized in that: the gap between the mud discharge bottom plates is 2-5cm. 7. A small sewage treatment ship-type sedimentation tank device as claimed in claim 1, characterized in that: the slope of the mud discharge floor is 45-75 degrees. 8. A small sewage treatment ship-type sedimentation tank device as claimed in claim 1, characterized in that: the inclination angle of the inclined plate is 60-80 degrees. 9. A small sewage treatment ship-type sedimentation tank device as claimed in claim 1, characterized in that: the water outlet of the water outlet area adopts a triangular weir or a water pipe with holes arranged below 5 cm of the water surface. 10. A small sewage treatment ship-type sedimentation tank device according to any one of claims 1 to 9, characterized in that the device further comprises a cover.

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