CN214457471U

CN214457471U - Water purification filtering dam with adjustable overflow water level height

Info

Publication number: CN214457471U
Application number: CN202022927082.8U
Authority: CN
Inventors: 谢文琪; 袁琥萍; 尚绪振; 花昌元
Original assignee: Suzhou Jiye Ecological Garden Co ltd
Current assignee: Suzhou Jiye Ecological Garden Co ltd
Priority date: 2020-12-07
Filing date: 2020-12-07
Publication date: 2021-10-22
Anticipated expiration: 2030-12-07

Abstract

The utility model discloses a dam is strained in water purification of adjustable overflow water level height relates to water pollution and administers and water environment restoration technical field, aims at solving actual river course water environment and administers and ecological remediation engineering and implements, needs the different water level height of nimble regulation and maintaining the certain period sometimes, and general drainage overflow dam can not adjust the problem of different overflow water level height. The technical scheme is that the overflow pipe blocking device comprises a front dam body, a rear dam body, a settling tank arranged in front of an upstream slope toe of the front dam body, an overflow pipe arranged in the rear dam body and a pipe blocking cap connected with the overflow pipe in a matching mode, wherein the rectangular array of the overflow pipe is provided with a plurality of overflow pipes, and the maximum overflow sum of the plurality of overflow pipes with the same height when the overflow pipes are completely unscrewed is larger than the maximum flow increase of water stored in the front of the dam. The overflow water levels of different heights can be flexibly adjusted and maintained by the overflow pipes of different heights in the dam body after the dam body is opened and closed, the switching operation requirements of low water level and normal water level of the upstream water ecological system of the filtering dam are met, and the operation is simple and convenient.

Description

Water purification filtering dam with adjustable overflow water level height

Technical Field

The utility model belongs to the technical field of water pollution treatment and water environment prosthetic technique and specifically relates to a dam is strained in water purification of adjustable overflow water level height is related to.

Background

In river water environment treatment and ecological restoration engineering, water is generally stored by building gates and dams to maintain landscape of target river sections or ecological normal water level requirements. Although the traditional water conservancy control gate dam such as a flap gate, a rubber dam, a steel dam gate and the like can block and store upstream incoming water, the traditional water conservancy control gate dam does not have a water purification function. Therefore, in the actual river channel treatment process, a water filtering dam with certain water permeability and filtering performance is built through gravel piles, and the dual functions of water blocking and water purifying are achieved.

The Chinese patent with the prior application publication number of CN101845806A discloses a permeable overflow dam with combined water level control and water quality purification functions, which comprises a solid dam body, a permeable dam body and a water purification medium arranged in the permeable dam body; the solid dam body is an impervious solid structure formed by pouring concrete or reinforced concrete, and the height of the top of the solid dam body is the height of the higher water level of the lowest water level required by a river ecological system or the lowest water level required by a river landscape environment; the permeable dam body is a sash enclosure wall cast by concrete or reinforced concrete, a plurality of reinforced concrete partition walls are cast in the permeable dam body along the width direction of a river, a plurality of sand-free concrete walls are cast in the water flow direction, and the height of the top of the permeable dam body exceeds the design normal water level height of the overflow dam but is lower than the design flood level height of the river.

The above prior art solutions have the following drawbacks: in practical riverway water environment treatment and ecological restoration engineering implementation, different water level heights in a certain period need to be flexibly adjusted and maintained sometimes, and a common water filtering overflow dam does not have the function of adjusting the different overflow water level heights, so that further improvement is needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a dam is strained in water purification of adjustable overflow water level height, it has the effect of adjustable different overflow water level height.

The above technical purpose of the present invention can be achieved by the following technical solutions:

the utility model provides a water purifies and strains dam of adjustable overflow water level height, includes preceding dam body, back dam body, locates the front dam body upstream face toe the place ahead precipitation tank, locates the interior overfall pipe of back dam body and with overfall pipe accordant connection's pipe plug cap, overfall pipe rectangular array is provided with a plurality ofly, and the biggest overflow volume sum of a plurality of overfall pipes of same height when whole unscrewing is greater than the retaining maximum increase flow volume before the dam.

The utility model discloses further set up to: the pipe diameter of the overflow pipe is DN90-DN125, and the overflow pipe is a PVC pipe or a PE pipe.

The utility model discloses further set up to: the front dam body comprises a first gravel layer, a middle filter layer and a second gravel layer which are sequentially arranged along the water flow direction.

The utility model discloses further set up to: the first gravel layer comprises a plurality of gravels with the particle sizes of 20-40 mm, and the second gravel layer comprises a plurality of gravels with the particle sizes of 20-40 mm.

The utility model discloses further set up to: the middle filter layer comprises a plurality of ceramsite or zeolite or vermiculite with the particle size of 10-30 mm.

The utility model discloses further set up to: and a pebble landscaping layer is arranged on the top surface of the front dam body.

The utility model discloses further set up to: a stating step facing layer is laid on the top surface of the rear dam body, and a running water brick facing layer is arranged on the back surface of the rear dam body.

To sum up, the utility model discloses a beneficial technological effect does:

1. through the arrangement of the overflowing pipes and the pipe blocking caps, overflowing pipes with different heights in the dam body can flexibly adjust and maintain overflowing water levels with different heights after being opened and closed, the switching operation requirements of low water level and normal water level of an upstream water ecological system of the filtering dam are met, and the operation is simple and convenient;

2. through the setting on first gravel layer, middle filter layer and second gravel layer, when the water flows through, the pollutant in aquatic can directly be held back, adsorb down like suspended solid, phosphorus etc. and porous filter material surface can supply the microorganism to adhere to grow simultaneously and form the biomembrane, degrades the soluble organic matter of getting rid of in the polluted water to can realize quality of water purification's function.

Drawings

FIG. 1 is a schematic diagram of a longitudinal cross-sectional configuration of an embodiment of the present invention;

fig. 2 is a front view of an embodiment of the invention.

In the figure, 1, a front dam body; 2. a rear dam body; 3. a settling tank; 4. an overflow pipe; 5. a pipe blocking cap; 6. an intermediate filter layer; 7. a riverbed.

Detailed Description

The following detailed description of the preferred embodiments of the present invention will be provided in conjunction with the accompanying drawings, so as to enable those skilled in the art to more easily understand the advantages and features of the present invention, and thereby define the scope of the invention more clearly and clearly.

In a river channel with a small flow and a normal water level lower than 0.5m, the river width is 6-10 m, the revetment form is an upright retaining wall with the height of 2.5-3.0 m, and the riverbed 7 is a hard bottom protection, on the premise of not influencing flood discharge, the water body purification filter dam with the height of the overflow water level adjustable is constructed as shown in fig. 1 and fig. 2.

Referring to fig. 1 and 2, for the utility model discloses a water purification filter dam of adjustable overflow water level height, including preceding dam body 1,

back dam body

2, 2 dam crest length 1.0m, the dam bottom width 1.0m, height 1.5m of dam body after the design, preceding dam body 1 dam crest length 2.0m, the dam bottom width 5.0m, height 1.5m, upstream face and the surface of a river dam slope ratio is 1: 2. Firstly, a rear dam body 2 is constructed on a river channel by pouring reinforced concrete, and a plurality of flow-through pipes 4 horizontally spaced by 1m are sequentially embedded at the height positions of 0.0m, 0.5m and 1.2m of the rear dam body 2 in the pouring process of the rear dam body 2. In this embodiment, the flow pipe 4 is made of a PVC pipe of DN 110. A pipe plugging cap 5 is screwed on the lateral port of the back water surface of the overflow pipe 4.

Referring to fig. 1 and 2, the galvanized iron wires are woven into an open-close type gabion net cage, and a fishing net with the lining of 5 x 5mm is lined in the gabion net cage. A first gravel layer, a middle filter layer 6 and a second gravel layer are sequentially arranged in the gabion net cage along the water flow direction, and gravels with the particle size of 20-40 mm, ceramsite with the particle size of 10-30 mm and gravels with the particle size of 20-40 mm are internally arranged from left to right according to the filling ratio of 1:1: 1; then chiseling a sedimentation tank 3 with the width of 1.5m and the depth of 0.3m on the riverbed 7 in front of the upstream slope toe of the front dam body 1; in addition, the top surface of the front dam body 1 is scattered with pebbles to form a pebble landscaping layer, the top surface of the rear dam body 2 is paved and faced in a stating step to form a stating step facing layer, and the back surface of the rear dam body 2 is faced with running water bricks to form a running water brick facing layer.

Referring to fig. 1 and 2, when the designed normal water level 1.2m overflow water level is maintained, the pipe plug cap 5 on the flow pipe 4 at the position of 1.2m height of the dam body 2 is unscrewed, and the pipe plug cap 5 on the flow pipe 4 at the position of the rest height of the dam body 2 is unscrewed, upstream river water firstly passes through the sedimentation tank 3 along the water flow direction, large particles in the river water are settled and accumulated, and sediments collected by the sedimentation tank 3 can be removed by a dredge pump in the operation process; and then the river water passes through the first gravel layer, the middle filter layer 6 and the second gravel layer of the front dam body 1, pollutants such as suspended matters, phosphorus and the like in the river water can be further intercepted and adsorbed, meanwhile, a biological membrane formed by the first gravel layer, the middle filter layer 6 and the second gravel layer can be degraded to a certain extent in the operation process to remove organic pollutants in the river water, and the river water purified by the front dam body 1 overflows through the flow passing pipe 4 at the position of 1.2m height of the rear dam body 2 to be discharged.

Referring to fig. 1 and 2, for the case that the transparency of the water body of the submerged plant is reduced in the germination period of the aquatic weeds in winter and spring or when the submerged plant faces external pollution, if the water level needs to be reduced and the water level is maintained at the overflow water level of 0.5m when the submerged plant operates, the pipe blocking cap 5 on the overflow pipe 4 at the height position of 0.5m of the dam body 2 is unscrewed, meanwhile, the pipe blocking cap 5 on the overflow pipe 4 at the rest height position of the dam body 2 is unscrewed, the upstream river water firstly passes through the sedimentation tank 3 along the water flow direction, large particles in the river water are settled and accumulated, and the sediment collected by the sedimentation tank 3 can be removed by a mud pump in the operation process; and when the river water passes through the front dam body 1, pollutants such as suspended matters, phosphorus and the like in the river water can be further intercepted and adsorbed, meanwhile, a biological membrane formed in the water purifying filter material area can be degraded to remove organic pollutants in the river water to a certain extent in the operation process, and the river water purified by the front dam body 1 overflows through the flow pipe 4 at the position of 0.5m height of the rear dam body 2 to be discharged.

The implementation principle of the embodiment is as follows: the overall structure is simple, the construction is convenient, the manufacturing cost is low, and the landscape and the pedestrian function are considered. The overflow water levels of different heights can be flexibly adjusted and maintained through the overflow pipes 4 of different heights in the dam body 2 after the opening and the closing, the switching operation requirements of low water level and normal water level of an upstream water ecological system of the filtering dam are met, and the operation is simple and convenient.

And in the flood season, a large amount of incoming water can directly overflow from the large section at the top of the dam rapidly, the large-flow flood discharge of the river channel is not influenced, and the pipe blocking caps 5 on the overflow pipes 4 at all the height positions of the opened dam body 2 are more beneficial to flood discharge and safe and stable operation of the dam body. And after the large flow flood in the flood season of the river channel, checking the first gravel layer, the middle filter layer 6 and the second gravel layer of the front dam body 1, and if the blockage occurs, replacing the gravel layers as necessary to restore the water quality purification capacity of the filter dam again.

In addition, a precipitation tank 3 is arranged in front of the front dam body 1, so that precipitation, collection and removal of large particles in a water body are facilitated, and the blockage of the large particles on a filter material of the front dam body is reduced; be equipped with first gravel layer, middle filter layer 6 and second gravel layer in dam body 1 in the front, when the water flowed through, the pollutant in aquatic can directly be held back, adsorb down like suspended solid, phosphorus, and the porous filter material surface can supply microorganism to adhere to grow and form the biomembrane simultaneously, degrades the dissolubility organic matter of polluting in the water and get rid of to can realize quality of water purification's function, especially open-close type gabion box still is convenient for the later stage of water purification filter material to change and the clearance of deposit.

The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.

Claims

1. The utility model provides a dam is strained in water purification of adjustable overflow water level height which characterized in that: including preceding dam body (1), back dam body (2), locate preceding dam body (1) upstream face toe the place ahead precipitation tank (3), locate overflow pipe (4) in back dam body (2) and with overflow pipe (4) accordant connection's pipe stifled cap (5), overflow pipe (4) rectangular array is provided with a plurality ofly, and the biggest overflow volume sum of a plurality of overflow pipes (4) of same height when whole unscrewing is greater than the retaining maximum flow that increases before the dam.

2. The water purifying filter dam of claim 1, wherein the height of the overflow water level is adjustable by: the pipe diameter of the overflow pipe (4) is DN90-DN125, and the overflow pipe (4) is a PVC pipe or a PE pipe.

3. The water purifying filter dam of claim 1, wherein the height of the overflow water level is adjustable by: the front dam body (1) comprises a first gravel layer, a middle filter layer (6) and a second gravel layer which are sequentially arranged along the water flow direction.

4. The water purifying filter dam of claim 3, wherein the height of the overflow water level is adjustable by: the first gravel layer comprises a plurality of gravels with the particle sizes of 20-40 mm, and the second gravel layer comprises a plurality of gravels with the particle sizes of 20-40 mm.

5. The water purifying filter dam of claim 4, wherein the height of the overflow water level is adjustable by: the middle filter layer (6) comprises a plurality of ceramsite or zeolite or vermiculite with the particle size of 10-30 mm.

6. The water purifying filter dam of claim 1, wherein the height of the overflow water level is adjustable by: a pebble landscaping layer is arranged on the top surface of the front dam body (1).

7. The water purifying filter dam of claim 1, wherein the height of the overflow water level is adjustable by: a stating step facing layer is laid on the top surface of the rear dam body (2), and a running water brick facing layer is arranged on the back surface of the rear dam body (2).