CN111218979A

CN111218979A - Floating cover structure on sewage pool

Info

Publication number: CN111218979A
Application number: CN202010169500.3A
Authority: CN
Inventors: 孙守毅; 陈锡明; 郭伟; 任文岳
Original assignee: Shaanxi Yihe Environmental Engineering Co Ltd
Current assignee: Shaanxi Yihe Environmental Engineering Co Ltd
Priority date: 2020-03-12
Filing date: 2020-03-12
Publication date: 2020-06-02

Abstract

The invention provides a floating cover structure on a sewage pool, which comprises a floating cover film on the sewage pool, wherein a lower-film floating body is arranged below the floating cover film, a ballast tube is arranged above the floating cover film, the lower-film floating body is in an arch shape with gradually changing height, the lower-film floating bodies are longitudinally arranged in parallel, the ballast tubes in the same direction are arranged between any longitudinally parallel lower-film floating bodies above the floating cover film, and the ballast tubes are in a tubular shape with gradually changing diameter; the accumulated water guide and discharge system comprises a water collecting pier and a submersible pump, wherein the water collecting pier is connected in series on the ballast pipe, the water collecting pier forms a water collecting pit for guiding the accumulated water on the membrane to flow on the floating cover membrane, the submersible pump is fixed on the water collecting pier, and the submersible pump is connected with a drain pipe. This structure can effectively guide the epimembranal ponding flow direction, has creatively provided epimembranal sump pit design, and the sump pit provides the bearing space for the fixed of suction pump, has effectively improved epimembranal ponding drainage efficiency, and this structure fastening position is few, and all materials are workable all, easily draw materials, effectively practice thrift manufacturing cost.

Description

Floating cover structure on sewage pool

Technical Field

The invention relates to the technical field of sewage pool treatment, in particular to a floating cover structure on a sewage pool.

Background

Landfill leachate or other industrial wastewater is usually collected in a sewage tank, and malodorous gas generated by fermentation of the leachate is isolated by generally adding a flexible membrane forming a floating cover, namely, a membrane is covered on the sewage tank, floats on the sewage surface, forms a closed cavity shell with the sewage tank, and is anchored at the periphery. The existing sewage pool is generally in a reverse hanging membrane structure, a floating cover is realized by additionally arranging a suspension device, part of large sewage pool is usually directly covered with the floating cover membrane due to large span, and a plurality of floating bodies are arranged under the membrane to bear the floating cover membrane. The problems that exist at present are: 1. the floating cover is hoisted by adopting a rigid part, the sewage tank belongs to permanent engineering, and a large number of hoisting parts have more overhaul positions and consume manpower; 2. if a floating body floating cover membrane is adopted, the corresponding area covered on a sewage pool is large, the drainage problem is particularly critical, particularly in winter, if accumulated water on the floating cover cannot be timely treated, the accumulated water is frozen at low temperature, ice blocks float up and down along with the liquid level, and the potential risk of piercing through the membrane material is caused; 3. the ballast tube is pressed on the surface of the floating cover film, accumulated water flows along the ballast tube, and the accumulated water is pumped by a manual hand-held water pump, so that time and labor are wasted; 4. the rainfall is big in rainy season, and the epimembranal a large amount of ponding of floating cover in short time cause the air guide smoothly easily, and the floating cover in the regulation pond forms very big swell, causes the membrane material to come the inflection and moves by a large scale, has the potential risk that causes the accident.

Disclosure of Invention

In order to overcome the defects in the prior art, the invention provides a floating cover structure on a sewage pool.

The invention is realized by the following technical scheme: a floating cover structure on a sewage pool comprises a floating cover film on the sewage pool, a lower-film floating body is arranged below the floating cover film, a ballast tube is arranged above the floating cover film, the floating cover structure also comprises a water accumulation drainage system on the film, the lower-film floating body is in an arch shape with gradually changed height, the lower-film floating bodies are all longitudinally arranged in parallel, the ballast tubes in the same direction are arranged between any longitudinally parallel lower-film floating bodies above the floating cover film, and the ballast tubes are in a tubular shape with gradually changed diameter; the ponding drainage guide system comprises a ponding pier and a submersible pump, the ponding pier is connected in series on a ballast tube, the ponding pier forms a catchment pit for guiding the ponding flow direction on the membrane on the floating cover membrane, the submersible pump is fixed on the ponding pier, and the submersible pump is connected with a drain pipe.

In the scheme, the center of the water collecting pier is provided with the fixed pipe, and the submersible pump is fixedly arranged in the fixed pipe.

In the scheme, the height of the floating body under the membrane is gradually reduced from the center of the sewage pool to two sides to form the upper convex arch bridge, the diameter of the ballast pipe is gradually increased from the center of the sewage pool to two sides, and the water collecting piers are close to two side edges of the sewage pool.

In the scheme, the height of the floating body under the membrane is gradually reduced from two sides of the sewage pool to the center to form the lower concave bridge, the diameter of the ballast pipe is gradually reduced from two sides of the sewage pool to the center, and the water collecting pier is close to the center of the sewage pool.

In the above scheme, the height of the floating body under the membrane is gradually reduced from one side of the sewage pool to the other side to form an upper convex arch bridge, the diameter of the ballast pipe is gradually increased from one side of the sewage pool to the other side of the sewage pool, and the water collecting pier is close to the lowest side of the arch bridge of the sewage pool.

In the scheme, the floating body unit is a foam block, and the outer surface of the floating body unit is wrapped with the HDPE film.

In the scheme, the floating body under the membrane is formed by connecting a plurality of floating body units in series.

In the scheme, the weight tube is formed by connecting a plurality of round tubes in series.

In the scheme, the water collecting pier is in a shape like a Chinese character 'tian' or a Chinese character 'ri' formed by welding round pipes, and four corners of the water collecting pier are bent pipes.

Compared with the prior art, the floating cover structure on the sewage pool has the beneficial effects that:

1. the floating cover forms an arch structure under the combined action of the gradual-change floating strip under the membrane and the gradual-change gravity pressing pipe group on the membrane, and the structure can effectively guide the flow direction of accumulated water on the membrane;

2. the design scheme of the water collecting pit on the membrane is creatively provided, the water collecting pit provides a supporting space for fixing the water suction pump, and the drainage efficiency of the accumulated water on the membrane is effectively improved;

3. the structure has few fastening parts, all materials are easy to process and draw materials, and the production cost is effectively saved.

Drawings

Fig. 1 is a front view schematically illustrating a floating cover structure of a wastewater tank according to the present invention.

Fig. 2 is a cross-sectional view of F-F in fig. 1.

In the figure: 1. the sewage treatment system comprises a floating cover membrane, 2, a floating body under the membrane, 3, a floating body unit, 4, a ballast pipe, 5, a water collecting pier, 6, a submersible pump, 7, a drain pipe, 8, a water collecting pit, 9, sewage and 10, a sewage pool.

Detailed Description

An embodiment of a floating cover structure on a wastewater tank according to the present invention will be described with reference to the accompanying drawings and specific embodiments.

Fig. 1 is a front view schematically illustrating a floating cover structure of a wastewater tank according to the present invention, and fig. 2 is a sectional view of F-F of fig. 1. In the figure, the floating cover structure comprises a floating cover film 1 on a sewage pool 10, a lower floating body 2 is arranged below the floating cover film 1, a ballast pipe 4 is arranged above the floating cover film 1, the floating cover structure also comprises an on-film accumulated water drainage system, the lower floating body 2 is formed by connecting a plurality of floating body units 3 in series to form an upper convex arch bridge, the height of each floating body unit 3 is gradually reduced from the center of the sewage pool 10 to two sides to form an arch, the lower floating bodies 2 are longitudinally arranged in parallel, the ballast pipes 4 in the same direction are arranged between any longitudinally parallel lower floating bodies 2 above the floating cover film 1, and the diameter of each ballast pipe 4 is gradually increased from the center of the sewage pool 10 to two sides; the accumulated water drainage guide system comprises a water collection pier 5 and a submersible pump 6, the water collection pier 5 is connected on a ballast pipe 4 close to the side edge of the sewage pool 10 in series, the ballast pipe 4 and the water collection pier 5 form a water collection pit 8 on the floating cover membrane 1, the submersible pump 6 is fixed on the water collection pier 5, and the submersible pump 6 is connected with a drainage pipe 7. Water collection pier 5 is the field word form that the pipe welding formed, and the four corners is the return bend, and water collection pier 5's center sets up fixed pipe, fixes in the fixed pipe and sets up immersible pump 6. The floating body unit 3 is a foam block, and the outer surface of the floating body unit 3 is wrapped with an HDPE film. The weight tube 4 is formed by connecting a plurality of round tubes in series.

The using state of the floating cover membrane is that the floating body 2 under the arched membrane is lifted by the sewage 9 along with the gradual rise of the liquid level of the sewage 9 in the sewage tank 10, and then the floating cover membrane 1 is gradually jacked from the center of the sewage tank 10 to two sides to form an arch. Meanwhile, the ballast tube 4 presses down the floating cover film 1 between the floating bodies 2 under the adjacent films to lead accumulated water on the upper surface of the floating cover film 1 to flow to the guide, the accumulated water is further guided to the water collecting piers 5 at two sides until the accumulated water flows to the water collecting piers 5 to press the water collecting pit 8 formed by the floating cover film 1, and finally the accumulated water is pumped out from the water discharge pipe 7 by the submersible pump 6 to finish the water discharge operation.

The invention has another two structures, one is a medium-span tank, namely the height of the floating body 2 under the membrane is gradually reduced from two sides of the sewage tank 10 to the center to form a lower concave bridge, the water collecting pit 8 is arranged in the middle of the sewage tank 10, the diameter of the ballast pipe 4 is gradually increased from two sides of the sewage tank 10 to the center, and the two sides are high and the middle is low; in another small-sized span pond, the floating body 2 under the membrane is high and low at one side to form a slope type upper arch bridge, the water collecting pit 8 is arranged at the bottom side of the slope, and the diameter of the ballast pipe 4 is gradually increased from the high side to the low side of the floating body 2 under the membrane.

The invention designs a floating cover structure on a sewage pool, a gradually-changed floating strip under a membrane and a gradually-changed gravity pressing pipe group on the membrane jointly act to enable the floating cover to form an arch structure, the structure can effectively guide the flow direction of accumulated water on the membrane, a design scheme of a water collecting pit on the membrane is creatively provided, the water collecting pit provides a supporting space for fixing a water suction pump, the water discharging efficiency of the accumulated water on the membrane is effectively improved, the structure has few fastening parts, all materials are easy to process and take, and the production cost is effectively saved.

Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. The utility model provides a floating cover structure on effluent water sump, includes the floating cover membrane on the effluent water sump, and the below of floating cover membrane is equipped with the body under the membrane, and the top of floating cover membrane is equipped with ballast tube, its characterized in that: the membrane-under floating body is arched, the height of the membrane-under floating body gradually changes, the membrane-under floating body is longitudinally arranged in parallel, the upper part of the floating cover membrane is positioned between any longitudinally parallel membrane-under floating bodies, and the same-direction ballast tubes are arranged and are tubular, the diameters of which gradually change; the ponding drainage guide system comprises a ponding pier and a submersible pump, the ponding pier is connected in series on a ballast tube, the ponding pier forms a catchment pit for guiding the ponding flow direction on the membrane on the floating cover membrane, the submersible pump is fixed on the ponding pier, and the submersible pump is connected with a drain pipe.

2. The floating cover structure on a wastewater tank of claim 1, wherein: the center of the water collecting pier is provided with a fixed pipe, and a submersible pump is fixedly arranged in the fixed pipe.

3. The floating cover structure on a wastewater tank of claim 2, wherein: the height of the floating body under the membrane is gradually reduced from the center of the sewage pool to two sides to form an upper convex arch bridge, the diameter of the ballast pipe is gradually increased from the center of the sewage pool to two sides, and the water collecting piers are close to two side edges of the sewage pool.

4. The floating cover structure on a wastewater tank of claim 2, wherein: the height of the floating body under the membrane is gradually reduced from two sides of the sewage pool to the center to form a lower concave bridge, the diameter of the ballast pipe is gradually reduced from two sides of the sewage pool to the center, and the water collecting pier is close to the center of the sewage pool.

5. The floating cover structure on a wastewater tank of claim 2, wherein: the height of body reduces gradually by effluent water sump one side to one side in addition and forms the epirelief arch bridge under the membrane, the diameter of ballast pipe is by effluent water sump one side to one side in addition to crescent, the pier that catchments is close to the arch bridge least side of effluent water sump.

6. The floating cover structure on a wastewater tank of claim 1, wherein: the floating body unit is a foam block, and the outer surface of the floating body unit is wrapped with an HDPE film.

7. The floating cover structure on a wastewater tank of claim 1, wherein: the under-membrane floating body is formed by connecting a plurality of floating body units in series.

8. The floating cover structure on a wastewater tank of claim 1, wherein: the weight tube is formed by connecting a plurality of round tubes in series.

9. The floating cover structure on a wastewater tank of claim 2, wherein: the water collecting pier is in a shape like a Chinese character 'tian' or a Chinese character 'ri' formed by welding round pipes, and four corners of the water collecting pier are bent pipes.