CN211644951U - Two-way preposition library - Google Patents
Two-way preposition library Download PDFInfo
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- CN211644951U CN211644951U CN201921319034.1U CN201921319034U CN211644951U CN 211644951 U CN211644951 U CN 211644951U CN 201921319034 U CN201921319034 U CN 201921319034U CN 211644951 U CN211644951 U CN 211644951U
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Abstract
The utility model relates to a reservoir pollution control technical field, concretely relates to bi-pass is to leading storehouse, include: the system comprises a closure gate, a settling zone, a purification zone, a stabilization zone, a buffer zone and a buffer zone water outlet gate; settling zone, clean area, stable area and buffer zone are series connection in proper order, and the settling zone is opposite in the connection one side of clean area sets up the floodgate dams, the buffer zone is opposite in the connection one side of stable area sets up the buffer zone goes out the sluice. The double-access preposed warehouse has the function of the preposed warehouse, and the preposed warehouse has the advantages of water level adjustment, separation of initial rainwater and flood, emergency treatment of emergency environmental events, stable preposed warehouse water level in the maintenance period and the like; meanwhile, the purification effect of the preposed reservoir is strengthened, and the coarse filtration of the slightly polluted water is realized; the guide wall semi-permeable structure improves flocculation and sedimentation effects. And different aquatic plants with strong adaptability and water purification capacity or a combined floating bed and floating island technology are selected, and the functions of purification and landscape are achieved.
Description
Technical Field
The utility model relates to a reservoir pollution control technical field, concretely relates to bi-directional prepositive storehouse.
Background
With the rapid development of economy, the rapid growth of population, the acceleration of industrialization and urbanization, the discharge amount of nitrogen and phosphorus nutrients to water is increasing day by day, the eutrophication degree of lakes is aggravated, and the difficulty in treating eutrophication is further increased when polluted water is discharged to a large area of water, so that a non-point source purification system is necessary to be arranged at the inlet of a reservoir, wherein the pre-reservoir treatment system is a practical technical method.
The traditional classic front reservoir is built at the mouth of the lake-entering reservoir to build a small reservoir pond which is positioned at the upstream of the main body lake reservoir and is used for intercepting pollutants entering the main body lake reservoir. Patents with publication numbers of CN1621622A, CN104803558A and CN103924551A, etc. can effectively purify and stabilize incoming water, and when rainstorm occurs in flood season, the water inflow is increased rapidly, and the hydraulic impact resistance is poor. The magnetic flocculation technology has a good removing effect on micro-polluted water with high suspended matter content, and the magnetic flocculation technology is applied to a pre-reservoir treatment flow-division rainwater treatment system under the publication number CN205773894U, however, the characteristics of initial rainwater and later rainwater quality are not considered, and the operation cost is high.
In addition, the preposed storehouses in the prior art are all single-way, the main purpose of the preposed storehouses is to intercept pollutants, and in the long-term use process, time periods that the water level is difficult to control and adjust are often encountered. Therefore, the utility model provides a bi-pass is to, and purifying effect is good, and water impact resistance is strong to reach the leading storehouse of certain view effect.
SUMMERY OF THE UTILITY MODEL
In order to effectively solve the problem, the utility model provides a bi-directional preposition library.
The utility model discloses a concrete technical scheme as follows: a dual-pass pre-library, the pre-library comprising: the system comprises a closure gate, a settling zone, a purification zone, a stabilization zone, a buffer zone and a buffer zone water outlet gate;
settling zone, clean area, stable area and buffer connect gradually, and the settling zone is opposite in the connection one side of clean area sets up the floodgate dams, the buffer is opposite in the connection one side of stable area sets up the buffer goes out the sluice.
Furthermore, a water inlet weir is arranged at one edge of the settling zone, a cut-off gate is arranged near the water inlet weir in order to be matched with the water inlet weir, and micro-polluted water enters the preposed reservoir through the water inlet weir by matching.
Furthermore, a first connecting port of the settling zone and the purifying zone is arranged at a position of the settling zone opposite to the intercepting gate, and the first connecting port and the intercepting gate are symmetrical to each other according to the overlooking section center position of the settling zone;
and a first guide wall is arranged between the settling zone and the purifying zone, and the first guide wall and the side of the preposed warehouse form the first connecting port.
Furthermore, a permeation dam is arranged between the stable area and the buffer area and is a water permeable structure, the permeation dam is used for communicating the stable area with the buffer area, a pump station is connected in the buffer area, and surplus water in the buffer area can be discharged through the pump station.
Furthermore, the water inlet weir adopts a semi-permeable structure, and the semi-permeable structure consists of a lower impermeable weir body and an upper permeable weir body.
Furthermore, the sedimentation zone also comprises a magnetic powder feeding port and a flocculating agent feeding port;
a plurality of weir passing drain pipes are also arranged in the impervious weir body;
the magnetic powder feeding port and the flocculating agent feeding port are connected to the weir-penetrating drain pipe, micro-polluted water is pushed upwards by 20-30 degrees through the weir-penetrating drain pipe to enter the settling zone, and the micro-polluted water and the flocculating agent feeding port are fully mixed under the action of surging.
Further, the permeable weir body is formed by piling 30-150mm of block riprap or bagged broken stones, and the height of the permeable weir body accounts for 20-30% of the total height of the water inlet weir.
The utility model has the advantages that:
(1) the utility model has the function of the preposed reservoir in the traditional sense, and simultaneously, the utility model can provide a water level adjusting function matched with the reservoir, and realizes the functions of separation of initial rain and flood, emergency treatment of emergency events and preposed reservoir water level stabilization in the maintenance period;
(2) the utility model strengthens the purification effect of the preposed warehouse, adopts hydraulic mixing, is not provided with a special magnetic powder and flocculating agent mixing flow passage, and regularly cleans and recovers magnetic powder from sediment in a sedimentation area, thereby reducing energy consumption and cost;
(3) the semi-permeable structure of the water inlet weir realizes coarse filtration of micro-polluted water; the flow guide wall semi-permeable structure changes the water flow form of the settling zone and improves the flocculation and settling effects.
(4) The distribution of initial rainwater and flood is realized through the scheduling of the closure gate, the capability of resisting hydraulic impact of the preposed warehouse is enhanced, and the adding amount of the medicament is saved.
(5) According to the water level conditions of all the areas of the preposed reservoir, aquatic plants with different adaptability and strong water purification capacity or a combined floating bed and floating island technology is selected, and particularly, an ecological control technology is adopted in a purification area for design, so that the purification and landscape functions of the preposed reservoir area are enhanced.
Drawings
Fig. 1 is a schematic view of an overall structure of a two-way front-end library provided by the present invention;
fig. 2 is a schematic view of a partial structure of a two-way front-end library provided by the present invention;
fig. 3 is the partial structure schematic diagram of the weir-penetrating drain pipe provided by the present invention.
Detailed Description
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and do not limit the application scope of the present invention, and for those skilled in the art, the present invention can be applied to other similar scenes according to the drawings without creative efforts;
as used in this specification and the appended claims, the singular forms "a", "an", and/or "the" include plural referents unless the context clearly dictates otherwise. In general, the terms "comprises" or "comprising" merely indicate that steps and elements which are explicitly identified are included, that these steps and elements do not constitute an exclusive list, and that a method or apparatus may also comprise other steps or elements. The term "based on" is "based, at least in part, on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment".
In this embodiment, take a certain reservoir in Shenzhen city as an example, in order to ensure the reservoir water supply capacity in the water pipe overhaul period, the reservoir adopts high water level operation, and the high water level is higher than the normal water level by 2-3 m.
As shown in fig. 1, the overall structure of the two-way preposed warehouse provided by the present invention is schematically illustrated, wherein the two-way preposed warehouse comprises a cut-off gate 1, a settling zone 2, a purification zone 3, a stabilization zone 4, a buffer zone 5, and a buffer zone water outlet gate 6;
the settling zone 2, the purifying zone 3, the stabilizing zone 4 and the buffer zone 5 are sequentially connected, the interception gate 1 is arranged on one side of the settling zone 2 opposite to the side connected with the purifying zone 3, and the buffer zone outlet gate 6 is arranged on one side of the buffer zone 5 opposite to the side connected with the stabilizing zone 4;
at the normal water level of the reservoir, the buffer area sluice 6 is normally opened, and the front-end reservoir is communicated with the reservoir; and in the maintenance period of the water pipeline, the water level of the reservoir is high, the water gate 6 of the buffer area is closed, and the redundant water in the preposed reservoir is discharged out of the reservoir, so that the water level of the preposed reservoir is ensured, and the proper water depth of the aquatic plants is maintained.
The water inlet weir 11 is arranged at one position of the edge of the settling zone 2, in order to be matched with the water inlet weir 11 to work, the cut-off gate 1 is arranged near the water inlet weir 11, and micro-polluted water enters the pre-reservoir through the water inlet weir 11 through matching; a first guide wall 20 is arranged between the sedimentation zone 2 and the purification zone 3, and micro-polluted water enters the purification zone 3 from the sedimentation zone 2 through the first guide wall 20, specifically, a first connecting port 21 is formed between the first guide wall 20 and one side of the front-end storage;
a second guide wall 32 is formed by extending on the side of the front storage, the second guide wall 32 is parallel to the first guide wall 20, a second connection port 31 is formed between the second guide wall 32 and the other side of the front storage, and the second connection port 31 and the first connection port 21 are symmetrical to each other according to the center position of the overlooking section of the purification area 3;
the micro-polluted inlet water provided by the structure can enter the stable area 4 along the S-shaped flow channel through the connecting port 31;
the stable region 4 with be provided with a infiltration dam 51 between the buffer 5, infiltration dam 51 can realize stable region 4 with buffer 5's bi-pass is to leading to water, specifically is high water level region to permeating water in the low water level region, and pump station 7 is connected to in the buffer 5, through pump station 7 can with surplus water yield in the buffer 5 is discharged.
In the first embodiment of the present invention, the two-way pre-reservoir is provided, the weir hole clear width of the applied water inlet weir 11 is 11m, and the reservoir capacity of the settling zone 2 is 20484m3The reservoir capacity of the purification zone 3 is 32400m3The storage capacity of the stabilization zone 4 is 32400m3The storage capacity of the buffer zone 5 is 62800m3。
The utility model discloses a theory of operation does: the intercepting gate 1 is in a normally closed state, micro-polluted water enters the pre-reservoir through the water inlet weir 11 for treatment by blocking up the water level of the intercepting gate 1, and the water outlet gate 6 of the buffer area is normally open and is the wetland water outlet elevation of the reservoir and the normal water level of the reservoir in operation; in the maintenance period of the water pipeline, the reservoir runs at a high water level, in order to keep the water level of the aquatic plants in the preposed reservoir within a proper water level range, the water outlet gate 6 of the buffer area is closed, and the water is drained by matching with the pump station 7, so that the influence of the rising of the water level of the reservoir on the growth of the plants is avoided.
In rainy seasons, the closure gate 1 is in a closed state in the early stage of rain, the water level of the closure gate 1 is raised, rainwater in the river enters the preposed reservoir through the water inlet weir 11 in the initial stage of the river entering the reservoir, the preposed reservoir runs at full load when the rainfall generally reaches 15-20 mm along with the increase of the rainfall, the closure gate 1 is opened to realize automatic flood discharge, and later stage rainwater or flood enters the reservoir.
When dealing with the emergency, the closure gate 1 and the buffer area water outlet gate 6 are in a closed state, and polluted water is introduced into the preposed reservoir, so that time can be won for processing the emergency.
The opening and closing of the gate is controlled by the water level through a liquid level meter.
As shown in fig. 2 and 3, the water inlet weir 11 adopts a semi-permeable structure, the semi-permeable structure is composed of a lower impermeable weir body 112 and an upper permeable weir body 111, the height of the impermeable weir body 112 is 70-80% of the total height of the water inlet weir 11, the permeable weir body 111 is a full permeable structure formed by stacking 30-150mm of block-shaped riprap stones or bagged gravel, and the height is 20-30% of the total height of the water inlet weir 11;
the permeable weir 111 is disposed vertically above the impermeable weir 112;
the impervious weir body 112 is a masonry dam, a concrete dam or a structurally reinforced earth-rock dam;
the impervious weir body 112 is also provided with a plurality of weir passing drain pipes 1120, the weir passing drain pipes 1120 are provided with switches for controlling the water level in the weir, wherein the switches can be selectively opened or closed according to actual conditions.
The pipe diameter of the weir penetrating drain pipe 1120 is 20mm-100mm, and the distance is controlled to be 0.5-1 m/piece.
The slope coefficients of the impermeable weir body 112 and the permeable weir body 111 are both 1: 1-1: 2.5.
The semi-permeable structure adopted by the utility model can realize the rough filtration of the entering micro-polluted water through the permeable weir body 111, and the rough filtration can isolate the large-particle pollutants in the micro-polluted water;
the sedimentation zone 2 also comprises a magnetic powder feeding port 201 and a flocculating agent feeding port 202;
the magnetic powder feeding port 201 and the flocculating agent feeding port 202 are respectively connected with a corresponding pump and a corresponding batching box, the batching boxes are respectively a magnetic powder batching box and a flocculating agent batching box,
the magnetic powder batching box and the flocculating agent batching box respectively convey magnetic powder and flocculating agent to the magnetic powder feeding port 201 and the flocculating agent feeding port 202 through pumps;
the magnetic powder batching box and the flocculating agent batching box can be arranged outside the preposed warehouse, or can be specifically understood as the outside of the sedimentation area 2, or can be specifically arranged on the peripheral wall of the sedimentation area 2 or the top of the side of the warehouse body;
the magnetic powder feeding port 201 and the flocculating agent feeding port 202 are arranged at the position of one end part of the weir passing drain pipe 1120 opposite to the settling zone 2, so that the magnetic powder and the flocculating agent can improve the flow velocity of the magnetic powder and the flocculating agent in the weir passing drain pipe 1120;
the magnetic powder is magnetic iron oxide powder, and the flocculating agent is a food-grade flocculating agent, wherein the input amount of the magnetic powder is 20-60mg/l, and the addition amount of the flocculating agent is 30-100 mg/l;
the magnetic powder feeding port 201 and the flocculating agent feeding port 202 are both connected to the weir-penetrating drain pipe 1120, the magnetic powder and the flocculating agent are added to the settling zone through the weir-penetrating drain pipe 1120, in order to realize more stable mixing of the magnetic powder, the flocculating agent and micro-polluted water, in the utility model, the drainage direction of the weir-penetrating drain pipe 1120 is obliquely upwards discharged at an angle of 20-30 degrees, and the weir-penetrating drain pipe 1120 is connected with the magnetic powder feeding port 201 and the flocculating agent feeding port 202 in a staggered manner; under the power of normal water pressure, the weir-passing drain pipe 1120 can still push the slightly polluted water upwards by 20-30 degrees into the settling zone 2, so that the slightly polluted water at the upper part is downwards surged, and the water at the lower part is upwards surged at the same time, and opposite flushing is generated in the surging;
in the hedging process, the magnetic powder and the flocculating agent can be highly mixed, and flocculation of flocs is promoted in the hedging mixing process, corresponding magnetic powder and flocculating agent mixing flow channels are not arranged in the utility model, and sediment in a settling zone is regularly cleaned and recovered with magnetic powder, so that the cost is reduced on the whole, and the construction can be realized most conveniently by applying the structural characteristics provided by the utility model, and the construction cost is reduced;
meanwhile, the first diversion wall 20 in the utility model is also a semi-permeable diversion wall structure, and is different from the semi-permeable structure adopted by the water inlet weir 11 in that the lower part of the first diversion wall 20 is a permeable wall 22 structure, and the upper part is a impermeable wall 23 structure,
the height of the water-impermeable wall 23 is 40-70% of the total height of the first guide wall 20, and the height of the water-permeable wall 22 is 30-60% of the total height of the first guide wall 20, and the water-permeable wall is a full water-permeable structure formed by piling 30-150mm of block-shaped flint stones or bagged broken stones;
the permeable wall 22 is arranged vertically below the impermeable wall 23;
the waterproof wall 23 is a masonry dam, a concrete dam or a structurally reinforced earth-rock dam;
a plurality of wall-through drain pipes 220 are also arranged in the impervious wall 23.
And a baffle batting grid plate 24 is arranged on one side of the water permeable wall 22, the baffle batting grid plate 24 is movably arranged on one side of the water permeable wall 22, specifically, grid plate tracks 230 are arranged at two ends of one side of the water permeable wall 22 facing the settling area, the grid plate tracks 230 are groove-shaped tracks, so that the baffle batting grid plate 24 is limited in the up-and-down moving process, hooks are arranged at the top of the baffle batting grid plate 24 for connection, the baffle batting grid plate 24 can be pulled and moved by the hooks through pulling lines, the baffle batting grid plate 24 can move on the grid plate tracks 230, magnetic composite batting generated in slightly polluted water is hung on the baffle batting grid plate 24, and the baffle batting grid plate 24 can be pulled out of the settling area after being pulled for subsequent treatment and disposal, so that the purpose of recycling of the baffle batting grid plate 24 is achieved.
Use leading-in storehouse of two accesss to precipitation zone 2, purifying zone 3, stable area 4, buffer 5 carry out the function realization according to water level condition, the aquatic plant that the adaptability of seed selection difference is strong or jointly float the bed chinampa technique, especially at the purifying zone, adopt benthophyte-emergent aquatic plant-floating leaf plant to combine together, and the zoobenthos, the biological manipulation technique that filter feeding fish combined together designs, it is main with the physicochemical purification to form the precipitation zone, the purifying zone is with biological purification as the owner, the stable area is further reoxygenation and purification of water quality, realize leading-in storehouse purification and view dual function.
Furthermore, the utility model has the function of a preposed reservoir in the traditional sense, and simultaneously, the utility model can provide a water level adjusting function matched with a reservoir, and realizes multiple functions of separation of initial rain and flood, emergency treatment of emergency events and preposed reservoir water level stabilization in the maintenance period;
the utility model strengthens the purification effect of the preposed warehouse, adopts hydraulic mixing, is not provided with a special magnetic powder and flocculating agent mixing flow passage, and regularly cleans and recovers magnetic powder from sediment in a sedimentation area, thereby reducing energy consumption and cost;
the water inlet weir 11 semi-permeable structure realizes coarse filtration of micro-polluted water; the flow guide wall 20 semi-permeable structure changes the water flow form of the settling zone and improves the flocculation and settling effects.
The diversion of initial rain and flood is realized through the dispatching of the cut-off gate 1, the capability of resisting hydraulic impact of the preposed warehouse is enhanced, and the dosage of the medicament is saved.
According to the water level conditions of all the areas of the preposed reservoir, different aquatic plants with strong adaptability or a combined floating bed and floating island technology is selected, and the functions of purification and landscape are achieved.
For those skilled in the art, based on the teachings of the present invention, changes, modifications, substitutions and alterations to the embodiments will still fall within the scope of the invention.
Claims (7)
1. A dual-pass pre-library, the pre-library comprising: the system comprises a closure gate, a settling zone, a purification zone, a stabilization zone, a buffer zone and a buffer zone water outlet gate;
settling zone, clean area, stable area and buffer connect gradually, and the settling zone is opposite in the connection one side of clean area sets up the floodgate dams, the buffer is opposite in the connection one side of stable area sets up the buffer goes out the sluice.
2. A two-way pre-reservoir as claimed in claim 1, wherein a water inlet weir is provided at a position at the edge of the settling zone, and a cut-off gate is provided adjacent to the water inlet weir for cooperating with the water inlet weir to allow the micro-polluted water to enter the pre-reservoir through the water inlet weir.
3. The two-way forward garage of claim 2, wherein a first connecting port of the settling zone and the purifying zone is arranged at a position of the settling zone opposite to the intercepting gate, and the first connecting port and the intercepting gate are symmetrical to each other according to the center position of the overlooking section of the settling zone;
and a first guide wall is arranged between the settling zone and the purifying zone, and the first guide wall and the side of the preposed warehouse form the first connecting port.
4. A two-way forward garage according to claim 1, wherein a permeable dam is arranged between the stable area and the buffer area, the permeable dam is a water permeable structure, the permeable dam communicates the stable area with the buffer area, and a pump station is connected in the buffer area, and excess water in the buffer area can be discharged through the pump station.
5. The two-way forward reservoir as claimed in claim 2, wherein the water inlet weir is a semi-permeable structure, and the semi-permeable structure is composed of a lower impermeable weir body and an upper permeable weir body.
6. The two-way preposition warehouse of claim 5, which is characterized in that the sedimentation zone further comprises a magnetic powder feeding port and a flocculating agent feeding port;
a plurality of weir passing drain pipes are also arranged in the impervious weir body;
the magnetic powder feeding port and the flocculating agent feeding port are connected to the weir-penetrating drain pipe, micro-polluted water is pushed upwards by 20-30 degrees through the weir-penetrating drain pipe to enter the settling zone, and the micro-polluted water and the flocculating agent feeding port are fully mixed under the action of surging.
7. The two-way forward-mounted warehouse as claimed in claim 5, wherein the water permeable weir is formed by piling 30-150mm of blocky riprap stones or bagged broken stones, and the height of the water permeable weir accounts for 20-30% of the total height of the water inlet weir.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921319034.1U CN211644951U (en) | 2019-08-15 | 2019-08-15 | Two-way preposition library |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921319034.1U CN211644951U (en) | 2019-08-15 | 2019-08-15 | Two-way preposition library |
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| CN211644951U true CN211644951U (en) | 2020-10-09 |
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| CN201921319034.1U Active CN211644951U (en) | 2019-08-15 | 2019-08-15 | Two-way preposition library |
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