CN216005579U

CN216005579U - Ecological structure of handling of mud at bottom of mud flat mariculture pond

Info

Publication number: CN216005579U
Application number: CN202122497070.0U
Authority: CN
Inventors: 周婷婷; 柳敏海; 何京; 张伟
Original assignee: Ninghai Marine Biological Seed Industry Research Institute Of Zhejiang Wanli University; Zhejiang East China Engineering Consulting Co Ltd
Current assignee: Ninghai Marine Biological Seed Industry Research Institute Of Zhejiang Wanli University; Zhejiang East China Engineering Consulting Co Ltd
Priority date: 2021-10-16
Filing date: 2021-10-16
Publication date: 2022-03-11
Anticipated expiration: 2031-10-16

Abstract

The application relates to the technical field of mariculture, in particular to a mudflat mariculture pond bottom mud ecological treatment structure, which comprises a retaining structure and an ecological treatment discharge channel arranged on one side of the retaining structure, wherein the retaining structure comprises a retaining wall and an outer seepage wall which are connected with each other, the retaining wall and the outer seepage wall are surrounded to form a mud storage pool, a plurality of lower seepage channels are arranged at the bottom of the mud storage pool, the bottom end of the outer seepage wall is communicated with one end of the lower seepage channel, and the outer seepage wall is close to the ecological treatment discharge channel; the top end of the ecological treatment discharge channel is lower than the infiltration channel; and a dilute solution layer formed by dilute solution is poured into the sludge storage tank. This application has the bed mud that reduces the breed pond and handles the influence to the environment.

Description

Ecological structure of handling of mud at bottom of mud flat mariculture pond

Technical Field

The application relates to the technical field of mariculture, in particular to a bottom mud ecological treatment structure of a beach mariculture pond.

Background

With the rapid development of marine economy, a large number of beach lands are reclaimed in coastal areas, and large reclaimed areas are separated into ponds, so that a large number of mariculture ponds are formed. Although the pond culture industry in the current stage of China effectively solves the demand of people on aquatic products, the pond culture industry has higher and higher environmental pressure and serious pollution while obtaining considerable economic benefit. The bottom mud of the mariculture pond is common pollution and has the characteristics of high salinity, high organic matter content, poor soil particle composition gradation, strong plasticity, poor permeability and the like. In recent years, the national requirements on the aspect of aquaculture environment protection are higher and higher, and researches on seawater ecological cycle aquaculture and seawater aquaculture pollutant resource utilization are also more and more.

At the present stage, farmers who breed on mudflats generally adopt a hydraulic flushing method to clear bottom mud of a culture pond, and use a high-pressure water gun to impact and crush the pond mud into slurry which is directly discharged to peripheral sea areas, so that a series of environmental problems such as red tide, water eutrophication and the like are caused. Therefore, the method for ecologically treating the bottom mud of the culture pond, which is low in cost and environment-friendly, has very important significance.

SUMMERY OF THE UTILITY MODEL

For the environmental protection is handled and is bred pond bed mud, this application provides a mud flat mariculture pond bed mud ecological treatment structure, its content as follows:

a mudflat mariculture pond bottom mud ecological treatment structure comprises an enclosing structure and an ecological treatment discharge channel arranged on one side of the enclosing structure, wherein the enclosing structure comprises a retaining wall and an outer seepage wall which are connected with each other, the retaining wall and the outer seepage wall are enclosed to form a mud storage pond, the bottom of the mud storage pond is provided with a plurality of lower seepage channels, the bottom end of the outer seepage wall is communicated with one end of each lower seepage channel, and the outer seepage wall is arranged close to the ecological treatment discharge channel; the top end of the ecological treatment discharge channel is lower than the infiltration channel; and a dilute solution layer formed by dilute solution is poured into the sludge storage tank.

Through the technical scheme, the sediment is poured into the sediment storage pool, and the diluent of the diluent layer dilutes the salt and part of organic substances in the sediment. The dilute solution then enters the infiltration canal and flows along the infiltration canal through the exterior wall and finally into the ecological treatment discharge canal.

Alkali-removing vegetation is planted in the ecological treatment discharge channel, and partial salt and organic substances in the diluent are absorbed by the alkali-removing vegetation, so that the probability of water eutrophication caused by the fact that the diluent is discharged to adjacent water is reduced.

Preferably, the bottom end of the sludge storage tank is fixedly connected with an impermeable layer.

Through above-mentioned technical scheme, the barrier layer can reduce the direct soil body that infiltrates below the silt storage pool of diluent to cause the probability of soil body pollution.

Preferably, a permeable isolating particle layer is arranged at the bottom of the sludge storage pool and on the impermeable layer.

Through above-mentioned technical scheme, the isolation grained layer that permeates water is coarse sand layer, has the effect of filtering the diluent. Meanwhile, the anti-seepage layer and the bottom mud are separated, so that the damage to the anti-seepage layer during bottom mud excavation is reduced, and the bottom mud is conveniently excavated.

Preferably, the cross section of the infiltration ditch is in a trapezoid shape with an inverted big top and a small bottom, and two sides of the infiltration ditch are inclined.

Through the technical scheme, the infiltration ditch is arranged in the flaring manner, so that infiltration liquid can enter the infiltration ditch.

Preferably, be provided with between isolation grained layer and the barrier layer permeates water and filter the filling structure, it sets up in the infiltration irrigation canals and ditches to filter the filling correspondence to filter the filling structure, filter the filling structure and include that macropore filters the body and the aperture filters the body, the aperture filters the body filler connection and is close to on the lateral wall that the infiltration irrigation canals and ditches slope in the macropore, the macropore filters the body and is connected with the bottom lateral wall of outer infiltration wall.

Through above-mentioned technical scheme, the canal wall of infiltration irrigation canals and ditches slope will guide the diluent to flow in, and the inflow of diluent is smugglied some and is permeated water and keep apart the intraformational casing of granule, consequently adopts the aperture filter body to filter, and in converging to the macropore filter body, the loss of the isolation granule layer granule of reducing permeating water.

Preferably, one end of the infiltration ditch far away from the outer infiltration wall is provided with a connecting ditch for connecting two adjacent infiltration ditches.

Through above-mentioned technical scheme, the connection irrigation canals and ditches can connect adjacent infiltration irrigation canals and ditches to through the connection irrigation canals and ditches when an infiltration irrigation canals and ditches blocks up, the silt storage pond can be discharged through adjacent infiltration irrigation canals and ditches to the diluent.

Preferably, the outer wall that oozes includes infiltration wall body and fixed connection the baffle on the infiltration wall body, the baffle sets up along infiltration wall body full length, the bottom of baffle is higher than the bottom of infiltration wall body, the bottom of baffle and the top parallel and level of infiltration irrigation canals and ditches or the top that is less than the infiltration irrigation canals and ditches.

Through above-mentioned technical scheme, the baffle is used for sheltering from the upper portion of infiltration wall direction of height to reduce the upper portion exosmosis that the diluent is direct from the infiltration wall direction of height.

Preferably, one end of the ecological treatment discharge channel is far away from the sludge storage pool to form a discharge port, a weir is fixedly connected in the ecological treatment discharge channel and is positioned at the discharge port, and the top end of the weir is higher than the inner wall of the channel bottom of the ecological treatment discharge channel.

Through above-mentioned technical scheme, the discharge port is used for discharging the diluent through ecological treatment discharge canal to the water that closes on, and the weir dam is used for heightening the high size in the bottom of the canal of discharge port ecological treatment discharge canal, reduces the direct probability that leaves ecological treatment discharge canal through the discharge port of diluent.

In summary, the present application has at least one of the following effects:

1. pouring the bottom mud into a mud storage pool, diluting the salt and partial organic substances in the bottom mud by using the diluent of the diluent layer, then enabling the diluted solution to enter an infiltration ditch, penetrate through an infiltration wall along the infiltration ditch, and finally flow into an ecological treatment discharge ditch, planting alkali-removing vegetation in the ecological treatment discharge ditch, and absorbing partial salt and organic substances in the diluent by the alkali-removing vegetation so as to reduce the probability of water eutrophication caused by the fact that the diluent is discharged into adjacent water;

2. the permeable isolation particle layer is used for filtering diluent which permeates the permeable isolation particle layer, and meanwhile, the impermeable layer and the bottom mud are separated, so that the impermeable layer is prevented from being damaged during bottom mud excavation, and the bottom mud is conveniently excavated;

3. the two adjacent infiltration ditches are connected through the connecting ditch, so that when one infiltration ditch is blocked, the diluent can be discharged out of the sludge storage pool through the adjacent infiltration ditches through the connecting ditch.

Drawings

Fig. 1 is an overall top view structure diagram of an embodiment of the present application.

Fig. 2 is a schematic sectional view taken along line a-a of fig. 1.

Fig. 3 is a schematic cross-sectional view taken along line B-B of fig. 2.

Description of reference numerals:

1. a fence structure; 2. infiltrating the ditch; 3. an ecological treatment discharge channel; 4. retaining walls; 5. an outer seepage wall; 6. a sludge storage pool; 7. a baffle plate; 8. a barrage; 9. connecting the trenches; 10. an impermeable layer; 11. filtering the filling layer; 12. a small pore filter; 13. a macroporous filter body; 14. a water-permeable barrier particle layer; 15. and (4) diluting the solution layer.

Detailed Description

Referring to fig. 1 and 2, the ecological treatment structure of mudflat mariculture pond bottom mud comprises a fence structure 1, a infiltration ditch 2 and an ecological treatment discharge ditch 3.

Enclose the bottom of fender structure 1 and connect in the soil horizon, enclose fender structure 1 and include barricade 4 and exosmosis wall 5, barricade 4 and exosmosis wall 5 are subaerial around forming the silt storage pond 6 that is used for storing the bed mud, and the shape of silt storage pond 6 is unlimited.

The retaining wall 4 can be formed by cast-in-place concrete or building blocks.

The outer seepage wall 5 is formed by stacking grid gabions, and the grid gabions are formed by filling blockstones in the steel wire framework. The exterior seepage wall 5 is internally provided with a water-permeable channel formed by the gaps of the rock blocks. The equal fixedly connected with baffle 7 of one side of oozing wall 5 towards silt storage pond 6, the bottom of baffle 7 is higher than the bottom of oozing wall 5.

The ecological treatment discharge canal 3 is located on the side of the outer permeable wall 5 facing away from the sludge storage tank 6, and the ecological treatment discharge canal 3 extends from the sludge storage tank 6 towards the seawater and has a length of 100m-200m, preferably 150 m. The cross section of the ecological treatment discharge channel 3 is in an inverted trapezoid shape, and the top end of the ecological treatment discharge channel 3 is lower than the bottom end of the outer seepage wall 5.

Alkali-removing vegetation is planted in the ecological treatment discharge channel 3 and on both sides, and the alkali-removing vegetation can be reed, froggrass or spartina alterniflora. The one end that the canal 3 was discharged in ecological treatment is the discharge port, and the delivery port position that the canal 3 was discharged in ecological treatment is provided with weir dam 8, and weir dam 8's top height is less than ecological treatment and discharges the top of canal 3, and weir dam 8 can improve the overflow height that the canal 3 discharge port was discharged in ecological treatment goes out.

The bottom of pool that silt stored pond 6 was seted up in infiltration irrigation canals and ditches 2, and the bottom of the canal of infiltration irrigation canals and ditches 2 is less than the bottom of baffle 7, and just be higher than the bottom of outer infiltration wall 5 or with the bottom parallel and level of outer infiltration wall 5 at the bottom of the canal of infiltration irrigation canals and ditches 2 in this application, the bottom parallel and level of outer infiltration wall 5 at the bottom of the canal. The infiltration ditch 2 is a straight-line-shaped arrangement, one end of the infiltration ditch 2 is connected with the bottom end of the outer infiltration wall 5, the other opposite end is provided with a connecting ditch 9, and two ends of the connecting ditch 9 are respectively communicated with two adjacent infiltration ditches 2.

Referring to fig. 2 and 3, the cross-sectional shapes and sizes of the connecting trench 9 and the infiltration trench 2 are the same, the cross-section of the infiltration trench 2 is in a reversed trapezoid shape with a large top and a small bottom, and the cross-section of the infiltration trench 2 is in an isosceles trapezoid structure.

And a seepage-proof layer 10 is paved at the bottom of the sludge storage pool 6, and the seepage-proof layer 10 is correspondingly attached to the wall of the channel by connecting the channel 9 and the infiltration channel 2.

And a filtering and filling structure is arranged on the impermeable layer 10 and correspondingly connected with the ditch 9 and the infiltration ditch 2, and comprises a large-pore filtering body 13 and a small-pore filtering body 12. The large-hole filter body 13 is also a grating gabion, and the large-hole filter body 13 is arranged in the length direction of the connecting channel 9 and the infiltration channel 2. The top of the large-pore filter 13 is flush with the infiltration canal 2 and the canal of the connecting canal 9.

The small-hole filter body 12 is formed by filling crushed stones, and the small-hole filter body 12 is formed by filling the large-hole filter body 13 and the side wall of the infiltration ditch 2 or the side wall of the connecting ditch 9.

The porous filter body 12 is formed with a water permeable channel, and the channel in the porous filter body 12 is more compact than the water permeable channel formed by the stones in the grating gabion due to the crushed stone material.

The small-hole filter body 12 positioned between the large-hole filter body 13 and the inclined canal wall can filter the liquid which seeps downwards in the sediment and flows in along the inclined canal side wall.

A permeable barrier particle layer 14 is further disposed on the impermeable layer 10, and the permeable barrier particle layer 14 shields the impermeable layer 10 and the filter filling structures located in the infiltration trench 2 and the connection trench 9.

The layer of water-permeable barrier particles 14 may be formed for 10cm coarse sand paving.

The sediment is inverted into the sediment storage tank 6 to form a sediment layer, then diluent is poured into the sediment storage tank 6 to form a diluted solution layer 15, and the liquid level of the diluted solution layer 15 is 8-12cm higher than the top of the sediment layer. The diluent may be fresh water.

The application of the ecological substrate sludge treatment structure of the beach seawater culture pond is as follows: and pouring the bottom mud into a mud storage pool 6, pouring diluent, dissolving salt and partial organic substances in the bottom mud into the diluent, and infiltrating downwards into a connecting ditch 9 and an infiltration ditch 2. During the infiltration of the diluent, the diluent will be subjected to the water-permeable spacer particle layer 14.

A small amount of dilution was then directed into the grated gabion.

The remaining dilution liquid is confined by the insulation and then passes through the small-pore filter body 12 along the side walls of the infiltration canal 2 and the connecting canal 9 into the grating gabion and finally leaves the sludge storage tank 6 along the run spaces in the grating gabion and enters the ecological process discharge canal 3 on the side.

The diluent flows to the discharge port in ecological treatment discharge canal 3, and in the flow process, the salinity and the organic matter part in the diluent are absorbed by alkali-removing vegetation, thereby reducing the salinity and the organic matter content in the diluent, and reducing the probability that the diluent is discharged to or causes the eutrophication of adjacent water bodies.

The weir dam 8 will have the effect of slowing down the flow of the diluent and will have some diluent storage capacity.

After the salt and the organic substances in the bottom mud in the mud treatment tank are diluted and treated, the bottom mud is dug out from the mud treatment tank, can be transported back and spread in a culture tank, and can also be used as planting soil for planting vegetation.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a mud flat mariculture pond bed mud ecological treatment structure which characterized in that: the ecological treatment discharge channel (3) comprises a retaining structure (1) and an ecological treatment discharge channel (3) arranged on one side of the retaining structure (1), wherein the retaining structure (1) comprises a retaining wall (4) and an outer seepage wall (5) which are connected with each other, the retaining wall (4) and the outer seepage wall (5) are enclosed to form a sludge storage pool (6), a plurality of lower seepage channels (2) are arranged at the bottom of the sludge storage pool (6), the bottom end of the outer seepage wall (5) is communicated with one end of each lower seepage channel (2), and the outer seepage wall (5) is arranged close to the ecological treatment discharge channel (3); the top end of the ecological treatment discharge channel (3) is lower than the infiltration channel (2); and a dilute solution layer (15) formed by dilute solution is poured into the sludge storage tank (6).

2. The ecological mudflat mariculture pond sediment treatment structure of claim 1, which is characterized in that: the bottom end of the sludge storage tank (6) is fixedly connected with an impermeable layer (10).

3. The ecological mudflat mariculture pond sediment treatment structure of claim 2, which is characterized in that: and a permeable isolating particle layer (14) is arranged at the bottom of the sludge storage tank (6) and on the impermeable layer (10).

4. The ecological mudflat mariculture pond sediment treatment structure of claim 1, which is characterized in that: the cross section of the infiltration ditch (2) is in a trapezoid shape with an inverted big top and a small bottom, and two sides of the infiltration ditch are inclined.

5. The ecological mudflat mariculture pond sediment treatment structure of claim 3, which is characterized in that: be provided with between isolation grained layer (14) and barrier layer (10) permeates water and filter filling structure, it fills to correspond to set up in infiltration irrigation canals and ditches (2) to filter filling structure, filter filling structure and include that macropore filters body (13) and aperture filter body (12), aperture filter body (12) fill connection is close to on the lateral wall that infiltration irrigation canals and ditches (2) slope in macropore filter body (13), macropore filters body (13) and is connected with the bottom lateral wall of exosmosis wall (5).

6. The ecological mudflat mariculture pond sediment treatment structure of claim 1, which is characterized in that: one end of the infiltration ditch (2) departing from the outer infiltration wall (5) is provided with a connecting ditch (9) used for connecting two adjacent infiltration ditches (2).

7. The ecological mudflat mariculture pond sediment treatment structure of claim 1, which is characterized in that: exosmosis wall (5) are including infiltration wall body and baffle (7) of fixed connection on the infiltration wall body, baffle (7) set up along infiltration wall body full length, the bottom of baffle (7) is higher than the bottom of infiltration wall body, the bottom of baffle (7) and the top parallel and level of infiltration irrigation canals and ditches (2) or be less than the top of infiltration irrigation canals and ditches (2) down.

8. The ecological mudflat mariculture pond sediment treatment structure of claim 1, which is characterized in that: the one end of ecological treatment emission canal (3) is kept away from silt storage pool (6) and is formed the discharge port, and ecological treatment emission canal (3) still fixedly connected with weir dam (8), weir dam (8) are located the discharge port position, and the bottom of weir dam (8) is higher than the canal bottom inner wall of ecological treatment emission canal (3).