Multifunctional drainage regulation and storage tank

Abstract

The utility model discloses a multifunctional drainage regulation and storage pond which comprises a first pond body, a second pond body, a third pond body and a fourth pond body, a gate, a low weir and a high weir are arranged on the side wall of the first pond body and communicated with the second pond body, the third pond body and the fourth pond body respectively, and the water passing levels of the gate, the low weir and the high weir are sequentially increased. The first pool body is used for conveying mixed and connected domestic sewage to a sewage treatment plant, the second pool body is used for collecting initial rainfall rainwater, the third pool body is used for collecting part of middle and later rainfall rainwater to flush the second pool body, and the fourth pool body is used for transferring the middle and later rainfall rainwater to be discharged into a nearby water body. According to the sewage treatment system, sewage can be sent to a sewage treatment plant for treatment, rainwater can be reasonably treated, rainfall rainwater in the middle and later periods can be recycled, pollution of domestic sewage and rainfall rainwater in the initial period to a receiving water body is controlled, retention, storage, purification, use and drainage measures of the sponge technology are adopted, rainfall peak flow is reduced, and the sewage treatment system is green, low-carbon and economical in circulation.

Description

TECHNICAL FIELD

[0001] The utility model belongs to drainage and water treatment technical field, concretely relates to a multifunctional drainage storage tank. BACKGROUND

[0002] For the region of city drainage system is split-flow system, even if setting up rainwater and sewage two sets of drainage pipe network system to collect, handle respectively, but split-flow system region still exists domestic sewage mixed connection, wrong connection into rainwater system phenomenon, the domestic sewage mixed into rainwater system needs to be sent to sewage treatment plant to handle. For the region of city drainage system is combined-flow system, often adopt intercepting method to send rainwater and sewage to sewage plant to handle simultaneously, but can increase the processing load of sewage treatment plant, increase the unnecessary cost of sewage treatment plant.

[0003] The initial rainwater generally refers to the rainwater of about 15 minutes when it rains, because it contains more pollutants, must be collected and handled before discharging. In view of the peak shaving and storage of rainwater and the pollution control of initial rainwater, rainwater storage tank is usually set in rainwater system. Rainwater storage tank stores the peak flow of rainwater runoff in the tank, and then slowly discharges rainwater from the storage tank when the maximum flow decreases. It can not only avoid rainwater flood peak and improve rainwater utilization rate, but also control the pollution of initial rainwater to the receiving water body, and can play a positive role in drainage scheduling between drainage areas.

[0004] When rainwater and sewage are combined or split-flow system rainwater system mixes and connects sewage, ordinary storage tank cannot collect sewage, initial rainfall rainwater and middle and late period rainfall rainwater separately, and overflow water discharged into water body may cause water pollution. Therefore, in order to solve the above problems, it is necessary to develop a multifunctional drainage storage tank to solve the problems of collecting and disposing sewage, initial rainfall rainwater and middle and late period rainfall rainwater separately in combined-flow system or rainwater system mixed with domestic sewage, greatly reducing the pollution problem of overflow water discharged into water body. Chinese invention patent CN104975648B discloses a combined-flow system underground initial rainwater storage tank, which collects initial rainwater into the storage tank and discharges later rainwater to natural water body under the premise of ensuring the maximum treatment capacity of sewage treatment plant. But there are the following shortcomings: many tank bodies, complex structure, complex operation process, underground separate design of tank body, inconvenient construction, limited application range. CONTENT OF UTILITY MODEL

[0005] To overcome the above technical difficulties, the utility model provides a kind of multifunctional drainage storage tank, can realize rainwater, sewage confluence or rainwater system mixed mistake access domestic sewage, reasonable disposal domestic sewage, initial rainfall rainwater, middle and late period rainfall rainwater, both can effectively control domestic sewage, initial rainfall rainwater to ecological environment pollution, and can reduce the load of sewage treatment plant, avoid cost increase.In addition, it can also store and reuse middle and late period rainfall rainwater, play the effect of reducing flood peak flow and recycling.The method is friendly to ecological environment, economic cycle, simple and easy to operate.

[0006] The utility model solves the above problems by the following technical means:

[0007] A kind of multifunctional drainage storage tank, including No. 1 pool body, No. 2 pool body, No. 3 pool body and No. 4 pool body, the side wall of No. 1 pool body is provided with gate, low weir, high weir, respectively with No. 2 pool body, No. 3 pool body, No. 4 pool body intercommunication, the water level of gate, low weir and high weir increases in turn.Gate, low weir and high weir are respectively used as the water inlet of No. 2 pool body, No. 3 pool body and No. 4 pool body, No. 1 pool body transports mixed mistake access domestic sewage to sewage treatment plant purification, No. 2 pool body is used to collect initial rainfall rainwater, No. 3 pool body is used to collect middle and late period rainfall rainwater, No. 4 pool body is used to transfer middle and late period rainfall rainwater.

[0008] Further, No. 2 pool body, No. 3 pool body and No. 4 pool body are arranged side by side and located on the same side of No. 1 pool body, and the combined pool body of the storage tank can reduce the land area occupied by the storage tank.

[0009] Further, the water level of the gate is not lower than the design water level of the sewage in No. 1 pool body, and an automatic device can be used to control the opening and closing of the gate.

[0010] Further, the water outlet of No. 2 pool body is provided with a gravity flow drainage pipe, and the initial rainfall rainwater collected by No. 2 pool body of the storage tank is preferentially sent to the nearest sewage treatment facility through the gravity flow drainage pipe.

[0011] Further, No. 2 pool body is provided with a flushing inlet pipe, and the water outlet of No. 3 pool body is provided with a drainage pipe connected to the flushing inlet pipe of No. 2 pool body, so that the rainwater collected and stored in No. 3 pool body can be used to flush No. 2 pool body after No. 2 pool body is emptied.

[0012] Further, the water outlet of No. 4 pool body is provided with a gravity flow drainage pipe, so that when No. 3 pool body is full of rainwater, No. 4 pool body starts to transfer the middle and late period rainfall rainwater in No. 1 pool body to the nearby water body.

[0013] Further, No. 1 pool body is replaced by a diversion channel.

[0014] Further, the third pool body and the fourth pool body are combined into one pool body to collect the middle and late stage rainfall, and part of the middle and late stage rainfall is used to flush the second pool body.

[0015] The utility model has the advantages of:

[0016] The storage tank of the utility model solves the problem that sewage, initial stage rainfall and middle and late stage rainfall are difficult to separate and collect and dispose when sewage and rainfall or rainfall system mixed connection and misconnection are connected to domestic sewage, can send the sewage to the sewage treatment plant for treatment, reasonably process the rainfall and reuse the middle and late stage rainfall, control the pollution of domestic sewage and initial stage rainfall to the receiving water body, use the measures of sponge technology lag, storage, purification, use and drainage, reduce the rainfall flood peak flow, the method is economic and environmental protection, simple structure, wide adaptability. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 It is the plane schematic view of multifunctional drainage storage tank.

[0018] Fig. 2 It is A-A section view of multifunctional drainage storage tank.

[0019] Fig. 3 It is B-B section view of multifunctional drainage storage tank.

[0020] In the drawing: 1 - first pool body;2 - second pool body;3 - third pool body;4 - fourth pool body;5 - overflow gate;6 - low weir;7 - high weir;8 - first pool body inlet pipe;9 - first pool body drainage pipe;10 - second pool body drainage pipe;11 - flushing connecting pipe;12 - fourth pool body drainage pipe;13 - gate. DETAILED DESCRIPTION

[0021] The technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model.

[0022] In the description of the utility model, it should be explained that the terms "first", "second", "third" and "fourth" are only used for description purpose, and cannot be understood as indicating or implying relative importance.

[0023] The technical principle of the utility model is: the first pool body 1 mainly receives domestic sewage and rainwater in the pipeline. On sunny days, the mixed and connected domestic sewage (flow Q) enters the first pool body 1 through the first pool body inlet pipe 8, and is directly transported to the sewage treatment plant through the first pool body outlet pipe 9, avoiding the direct external discharge of domestic sewage through the rainwater pipeline. On rainy days, domestic sewage (flow Q) and rainwater enter the first pool body 1 at the same time, and the water with flow Q is continuously transported to the sewage treatment plant, and the water exceeding flow Q is stored and transported through the second, third and fourth pool bodies.

[0024] The rainfall is divided into initial rainfall and middle and later stage rainfall according to time. The initial rainfall contains more pollutants, and direct external discharge will pollute the environment. During the initial rainfall, the flow Q in the first pool body 1 is continuously transported to the sewage treatment plant, and the water exceeding flow Q is basically initial rainfall, which is guided to enter the second pool body 2 through the overflow gate 5 and the gate 13 for storage, facilitating subsequent separate treatment and disposal. The initial rainfall collected in the second pool body 2 is sent to the nearest sewage treatment facility through the second pool body outlet pipe 10. During the middle and later stage rainfall, the water with flow Q in the first pool body is continuously sent to the sewage treatment plant, and the water exceeding flow Q is basically middle and later stage rainfall. At this time, the water exceeding flow Q first enters the third pool body for storage through the low weir 6, and then enters the fourth pool body 4 for transportation through the high weir 7 after the third pool body 3 is full. The fourth pool body 4 transports the middle and later stage rainfall to the nearby natural water body through the fourth pool body outlet pipe 12. The middle and later stage rainfall in the third pool body is transported to the second pool body through the flushing connecting pipe 11 for flushing the second pool body. The second pool body outlet pipe 10 and the second pool body outlet pipe 10 can both adopt gravity flow drainage pipes.

[0025] The multifunctional drainage storage tank of the utility model is described below by way of examples, but is not limited to the utility model.

[0026] Engineering case

[0027] The 2.8km 2 There are two sets of pipeline systems, rainwater pipeline system and sewage pipeline system, in the service area range; the rainwater is collected south-north through the rainwater pipeline system of Wuling Avenue, Langzhou Road and Danyang Road, and then enters the rainwater box culvert of Binhu Road, and then enters the storage tank of Baiziyuan Pumping Station, which is an independent pool body, and the rainwater is pumped out and discharged by the water pump; the sewage is collected east-west through the sewage pipeline system of Binhu Road and Dongting Avenue, and then enters the Baiguan Bridge Sewage Lifting Pumping Station. However, the storage tank of Baiziyuan Pumping Station receives sewage in the dry season, which shows that although there are two sets of municipal pipeline systems in the area, there is mixed connection and incorrect connection when entering the system.

[0028] Design example 1

[0029] The embodiment is improved on the basis of the engineering case. The original independent rainwater storage tank in the engineering case is divided into three parts. One part is the No. 2 pool body 2 of the embodiment, which is marked as the No. A pool body. The other two parts are combined into two pool bodies, that is, the combined No. 3 pool body 3 and No. 4 pool body 4 of the embodiment, which are marked as the No. B pool body. The No. A pool body and the No. B pool body are arranged side by side and have the same pool top elevation. Then, a diversion channel is designed beside the No. A pool body and the No. B pool body. The diversion channel is provided with a gate and a high weir on the side wall. The water inlet level of the high weir is higher than that of the gate. The No. A pool body and the No. B pool body are located on the same side of the diversion channel. The diversion channel is connected with the No. A pool body through the gate and connected with the No. B pool body through the high weir. The No. A pool body is close to the water inlet end of the diversion channel, and the No. B pool body is close to the water outlet end of the diversion channel. The flushing water inlet pipe of the No. A pool body is connected with the drainage pipe of the No. B pool body.

[0030] The No. A pool body collects the initial rainfall, the No. B pool body collects the later rainfall, and the domestic sewage is guided to the sewage lifting pump station through the diversion channel of the storage tank. The gate is the water inlet of the No. A pool body. The water inlet level of the No. A pool body is 27.50 m, which is not lower than the design water level of the sewage in the diversion channel. The area is about 4014 m 2 When the rainfall continues and the water level in front of the low weir of the No. A pool body exceeds the elevation of 27.50 m, the rainwater flows into the No. A pool through the low water inlet weir. When the water level in the No. A pool reaches 27.00 m, the rainwater in the No. A pool is treated through the drainage pipe of the No. A pool to the nearest sewage treatment facility (ecological filter tank). When the ecological filter tank is full of water or when the water level in the No. A pool of the storage tank decreases to 25.80 m, the drainage pipe of the No. A pool stops draining. The No. B pool body is a high water inlet weir. The water inlet level of the No. B pool body is 27.8 m, and the area is about 4878 m 2 . The main function of the No. B pool body is to store and transfer the rainwater of heavy and heavy rain. When the No. B pool body is full, most of the rainwater in the No. B pool body is drained to the Zhenzi River through the drainage pipe, and part of the rainwater in the No. B pool body is used to flush the No. A pool body.

[0031] In addition, the water inlet of the No. A pool body can be changed from the gate to the low weir.

[0032] Design embodiment 2; see Figs. 1-3 ;

[0033] The embodiment is improved on the basis of the engineering case, the diversion channel of the design embodiment 1 is changed into the No. 1 pool body 1 of the embodiment, the original storage tank is divided into three parts and is used as the No. 2 pool body 2, the No. 3 pool body 3 and the No. 4 pool body 4 respectively, the No. 2 pool body 2, the No. 3 pool body 3 and the No. 4 pool body 4 are arranged side by side and have the same pool top elevation, the three pool bodies are located on the same side of the No. 1 pool body 1, the No. 2 pool body 2 is close to the water inlet pipe 8 of the No. 1 pool body, the No. 4 pool body 4 is close to the water outlet pipe 9 of the No. 1 pool body, and the No. 3 pool body 3 is between the No. 2 pool body 2 and the No. 4 pool body 4. The side wall of the No. 1 pool body 1 is provided with a gate, a low weir and a high weir, the water passing levels of the gate, the low weir and the high weir increase in turn, and the gate, the low weir and the high weir are used as the water inlets of the No. 2 pool body 2, the No. 3 pool body 3 and the No. 4 pool body 4 respectively. The same pool top elevation can make the initial rainfall water stored in the No. 2 pool body 2 and the middle and late rainfall water stored in the No. 3 pool body 3 not overflow when the rainfall water in the No. 4 pool body 4 is transferred in the later period of rainfall.

[0034] The storage tank of the Baiziyuan pumping station is reconstructed into a multifunctional drainage storage tank, the No. 2 pool body 2 collects the initial rainfall water, the No. 3 pool body 3 collects part of the middle and late rainfall water for flushing the No. 2 pool body 2, the No. 4 pool body 4 collects most of the middle and late rainfall water for transfer, and domestic sewage is guided to the sewage lifting pumping station after passing through the No. 1 pool body 1 of the storage tank. The No. 2 pool body 2 is provided with an overflow gate and a gate water inlet, the water inlet elevation of the No. 2 pool body 2 is 27.50 m, is not lower than the design water level of the sewage in the No. 1 pool body 1, has an area of about 4014 m 2 ; the No. 3 pool body 3 temporarily collects part of the middle and late rainfall water, the No. 4 pool body 4 stores and transfers the middle and late rainfall water, and part of the rainfall water in the No. 3 pool body 3 is used for flushing the No. 2 pool body 2 when the No. 2 pool body 2 is emptied. In other embodiments, an automatic device can be used to control the opening and closing of the gate.

[0035] By arranging the multifunctional drainage storage tank, the problem that domestic sewage is mixed into the rainwater system can be solved, the domestic sewage and the rainwater are disposed respectively, the domestic sewage and the initial rainfall water are effectively treated, the domestic sewage and the initial rainfall water are prevented from being directly discharged to pollute the nearby receiving water body or the rainwater is prevented from entering the sewage treatment plant to reduce the water concentration, the rainwater is stored and regulated at the same time, the rainwater flood peak is reduced, and high ecological environmental benefits and economic benefits are obtained.

[0036] The above description is only used to illustrate the technical scheme of the utility model and not to limit it, and the modification or replacement of the technical scheme by other technical personnel in the same technical field should be covered in the scope of the claims of the utility model as long as the modification or replacement does not deviate from the connotation of the technical scheme of the utility model.

Claims

1. A multifunctional drainage and storage tank, characterized in that: It includes Pool 1, Pool 2, Pool 3 and Pool 4. The side wall of Pool 1 is equipped with a gate, a low weir and a high weir, which are connected to Pool 2, Pool 3 and Pool 4 respectively. The water level of the gate, the low weir and the high weir increases in sequence.

2. The multifunctional drainage and storage tank according to claim 1, characterized in that: Pool No. 2, Pool No. 3, and Pool No. 4 are arranged side by side and located on the same side of Pool No.

1.

3. A multifunctional drainage and storage tank according to claim 1 or 2, characterized in that: The water level passing through the gate shall not be lower than the design water level of the sewage in the No. 1 pool.

4. A multifunctional drainage and storage tank according to claim 1 or 2, characterized in that: The outlet of the No. 2 pool is equipped with a gravity flow drainage pipe.

5. A multifunctional drainage and storage tank according to claim 1 or 2, characterized in that: The No. 2 pool is equipped with a rinsing inlet pipe, and the No. 3 pool is equipped with a drain pipe at its outlet, which is connected to the rinsing inlet pipe of the No. 2 pool.

6. A multifunctional drainage and storage tank according to claim 1 or 2, characterized in that: The outlet of the No. 4 pool is equipped with a gravity flow drainage pipe.

7. A multifunctional drainage and storage tank according to any one of claims 1-6, characterized in that: The No. 1 pool body was replaced with a flow channel.

8. A multifunctional drainage and storage tank according to any one of claims 1-7, characterized in that: Pool No. 3 and Pool No. 4 are combined into one pool.

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