Two-inlet and two-outlet type water outlet mixing well capable of flexibly distributing water and using method

Abstract

The invention discloses a two-in and two-out type water outlet mixing well capable of flexibly distributing water and a using method. The two-in and two-out type water outlet mixing well comprises an overflow bin and a mixing bin. The mixing bin receives upstream pretreatment effluent through a first water inlet, water flowing through the mixing bin is discharged to an aeration desilting basin of a sewage treatment plant through a first water outlet, and a conversion gate is arranged between the mixing bin and the overflow bin; one side of the overflow bin is connected with the mixing bin, a plurality of water pump water outlet bins are arranged on the other side of the overflow bin in the length direction, a second water outlet and a second water outlet control gate are arranged on the side wall connected with the mixing bin, and the overflow bin is connected with a main water distribution well of a sewage treatment plant through the second water outlet; the side wall, back on to the overflow bin, of each water pump water outlet bin receives water discharged by the lifting pump of the storage pond through a second water inlet and is provided with a water pump water outlet control gate, and an overflow weir is arranged between the water pump water outlet bin and the overflow bin. According to the requirements of different time periods or different processes, different operation modes can be achieved by adjusting the control valve.

Description

Technical Field

[0001] The invention relates to the technical field of sewage treatment, and in particular to a two-inlet and two-outlet water mixing well capable of flexibly distributing water and a use method thereof. Background Art

[0002] The drainage system is an important municipal infrastructure for urban modernization, and the outlet well is a common node structure inside the drainage system plant and station. In recent years, as the concept of building a resilient city has become more and more popular, this concept has brought many new challenges to the urban drainage system. In this context, it is urgent to optimize the connection between large-scale sewage treatment systems and build a more efficient urban drainage network to meet the construction needs of resilient cities. In order to better realize the interconnection, intercommunication and complementarity between urban drainage systems, the operation of sewage pipe networks and plants and stations has become very complicated, and the complex operation mode has put forward higher requirements on the construction form of traditional structures.

[0003] Traditional water wells are mostly single water inlet or single water outlet. In order to better realize sewage scheduling, it is often necessary to build multiple diversion wells or water distribution wells inside the factory to realize sewage allocation under different operating modes.

[0004] The design of the outlet wells in the sewage treatment system is relatively simple, and different process flows often require the construction of different outlet wells or distribution wells. When the sewage system fails, it is difficult to flexibly adjust the sewage outlet, which can easily lead to sewage accumulation or overflow. In the case of multi-directional water inflow, multi-channel water discharge, or differentiated water distribution for different operating water levels, traditional outlet wells are difficult to accurately distribute water according to actual needs, which may cause uneven water distribution in various regions and affect the overall operation of the sewage treatment system.

[0005] Moreover, due to limitations in land use, underground space and geographical conditions, achieving different sewage operation modes through intensive structures is one of the key difficulties in the current construction of sewage drainage systems.

[0006] Therefore, how to realize flexible water distribution of the outlet mixing well can optimize the process flow, alleviate the shortage of land within the plant and station, reduce the difficulty of site selection, reduce the number of structures inside the sewage treatment plant and station, realize the intensive design of sewage treatment structures and optimize the process flow has become a technical problem that technical personnel in this field urgently need to solve. Summary of the invention

[0007] In view of the above-mentioned defects of the prior art, the present invention provides a two-inlet and two-outlet effluent mixing well with flexible water distribution and a method of use. The purpose of achieving this is to realize an effluent mixing well with flexible water distribution, which can optimize the process flow, alleviate the shortage of land inside the plant and station, reduce the difficulty of site selection, reduce the number of structures inside the sewage treatment plant and station, realize intensive design of sewage treatment structures and optimize the process flow.

[0008] To achieve the above object, the present invention discloses a two-in-two-out water outlet mixing well capable of flexibly distributing water; characterized in that it includes an overflow chamber and a mixing chamber;

[0009] The mixing chamber is in a rectangular strip shape, with a first water inlet at one end, receiving the upstream pre-treated effluent through the first water inlet, and a first water outlet at the other end, discharging the water flowing through the mixing chamber to the aerated grit chamber of the sewage treatment plant and subsequent treatment processes through the first water outlet. There is a transfer gate between it and the overflow chamber;

[0010] The overflow chamber is rectangular, one side is connected to the mixing chamber, and on the other side, there are multiple pump effluent chambers along the length direction. And on the side wall connected to the mixing chamber, there is a second water outlet and a second water outlet control gate for controlling the opening and closing of the second water outlet, and it is connected to the general water distribution well of the sewage treatment plant through the second water outlet, and the water is re-distributed to different factory areas through the general water distribution well;

[0011] The side wall of each pump effluent chamber facing away from the overflow chamber receives the effluent from the lift pump of the storage tank through a second water inlet, and a pump effluent control gate is provided for each, and an overflow weir is provided between each and the overflow chamber.

[0012] Preferably, an independent channel partition wall is provided for the part of the second water outlet passing through the mixing chamber to achieve separate quality effluent for the water coming from the first water inlet and the second water outlet.

[0013] Preferably, first water outlet control gates are provided for both the first water inlet and the first water outlet.

[0014] Preferably, local drainage pits are provided for the mixing chamber, the overflow chamber and each pump effluent chamber.

[0015] Preferably, equipment hoisting holes are provided near all the gates at the top.

[0016] Preferably, railings are provided near the four peripheral edges at the top.

[0017] The present invention also provides a usage method for the two-in-two-out water outlet mixing well capable of flexibly distributing water, including three working conditions;

[0018] In the first working condition, the pre-treated effluent enters the mixing chamber through the first water inlet, flows through the mixing chamber and the first water outlet, and then enters the aerated grit chamber of the downstream sewage treatment plant and subsequent treatment processes. The first water outlet control gate is in the open state, the transfer gate and the second water outlet channel control gate are both closed, there is no effluent from the storage tank, the overflow chamber is an empty chamber, and no effluent enters the general water distribution well of the sewage treatment plant through the second water outlet;

[0019] In the second described working condition, the water discharged from the storage tank enters the water outlet chamber of the water pump and the overflow chamber in sequence through the second water inlet, and then enters the general distribution well of the sewage treatment plant through the second water outlet. The conversion gate is closed, the control gate of the second water outlet channel is opened, and the first water inlet and the first water outlet operate normally.

[0020] In the third described working condition, the water discharged from the storage tank enters the water outlet chamber of the water pump and the overflow chamber in sequence through the second water inlet, and then enters the aerated grit chamber and subsequent treatment processes of the downstream sewage treatment plant through the conversion gate and the first water outlet. The control gate of the second water outlet channel is closed, and the opening degree of the first water outlet control gate is adjusted according to the load condition of the downstream sewage treatment plant.

[0021] Advantages of the present invention:

[0022] The present invention can, according to the operation requirements of different time periods or different processes, or when the sewage volume in a certain area is at full load or equipment is under maintenance, flexibly distribute water by adjusting the control valves, and achieve different operation modes.

[0023] By compartmentalizing the internal structure of the effluent mixing well and reasonably setting the gates, the present invention can effectively realize the effluent water distribution function required for different time periods or different processes, enabling an effluent mixing well to achieve the water distribution process under three operation modes, achieving separate effluent for influent water from different sources and at different water levels, and intensively designing the influent and effluent structures.

[0024] The present invention can not only effectively relieve the tense situation of land use inside the plant station, reduce the design and construction difficulties, improve the land utilization rate inside the plant site, but also greatly reduce the land requirements for the structures and pipelines.

[0025] The present invention is applicable to large sewage treatment areas with multi-trunk influent. The multi-directional influent and multi-channel effluent design of the effluent mixing well facilitates the water distribution and scheduling between plants.

[0026] The following will further illustrate the concept, specific structure and technical effects generated by the present invention in conjunction with the drawings, so as to fully understand the purpose, features and effects of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 Shows a schematic plan view of an embodiment of the present invention.

[0028] Figure 2 Shows a schematic longitudinal sectional view of an embodiment of the present invention.

[0029] Figure 3 Shows a schematic cross-sectional view of an embodiment of the present invention.

[0030] Figure 4Schematic plan view showing an embodiment of the present invention in a first operating condition.

[0031] Figure 5 Schematic plan view showing an embodiment of the present invention in a second operating condition.

[0032] Figure 6 Schematic plan view showing an embodiment of the present invention in a third operating condition.

[0033] Wherein, 1, first water inlet; 2, second water inlet; 3, water pump outlet chamber; 4, overflow chamber; 5, mixing chamber; 6, overflow weir; 7, local drainage pit; 8, first water outlet; 9, second water outlet; 10, first water outlet control gate; 11, second water outlet control gate; 12, conversion gate; 13, water pump outlet control gate; 14, equipment hoisting hole; 15, railing. Detailed implementation manners

[0034] Embodiment

[0035] As Figures 1 to 3 shown, a two-inlet and two-outlet type water outlet mixing well capable of flexibly distributing water includes an overflow chamber 4 and a mixing chamber 5;

[0036] The mixing chamber 5 is in a rectangular strip shape, with a first water inlet 1 provided at one end to receive the upstream pre-treated effluent through the first water inlet 1, and a first water outlet 8 provided at the other end to discharge the water body flowing through the mixing chamber 5 to the aeration grit chamber and subsequent treatment processes of the sewage treatment plant. A conversion gate 12 is provided between the mixing chamber 5 and the overflow chamber 4;

[0037] The overflow chamber 4 is rectangular, connected to the mixing chamber 5 on one side, and a plurality of water pump outlet chambers 3 are provided along the length direction on the other side. A second water outlet 9 and a second water outlet control gate 11 for controlling the opening and closing of the second water outlet 9 are provided on the side wall connected to the mixing chamber 5. The second water outlet 9 is connected to the general water distribution well of the sewage treatment plant, and the water is re-distributed to different plant areas through the general water distribution well;

[0038] The side wall of each water pump outlet chamber 3 facing away from the overflow chamber 4 receives the effluent of the lift pump of the storage tank through the second water inlet 2, and a water pump outlet control gate 13 is provided for each, and an overflow weir 6 is provided between each and the overflow chamber 4.

[0039] The present invention reasonably divides the internal structural space of the water outlet mixing well to construct a plurality of independent and interrelated chambers. On the partition walls between the chambers, intercepting control devices such as gates are provided according to the operation requirements.

[0040] At the same time, the partition walls and flow channels of the water outlet mixing well are designed according to their respective hydraulic elevations under different technological processes to avoid short-circuiting phenomena, make the water outlet more stable and uniform, and provide good hydraulic conditions for the subsequent treatment process.

[0041] To prevent the hidden danger of excessive sewage backflow caused by the sudden stop of the water pump when the water pump discharges water, a separation measure is set in the overflow chamber 4 by arranging multiple water pump discharge chambers 3, so that each water pump discharge pipe connected to the second water inlet 2 corresponds to an independent water pump discharge chamber 3, and a water pump discharge control gate 13 is arranged on each water pump discharge pipe.

[0042] The sewage in each water pump discharge chamber 3 enters the overflow chamber 4 after passing through the corresponding overflow weir 6;

[0043] Since the water pump discharge chamber 3 receives the water discharged by the lift pump of the regulating pond and is affected by the water levels upstream and downstream, the flow rate fluctuates greatly. To avoid the impact of sewage on subsequent treatment, each water pump discharge chamber 3 uses an overflow weir 6 for water discharge to achieve the regulation of water volume and make the water discharge flow rate more stable.

[0044] In some embodiments, an independent channel partition wall is provided at the part where the second water outlet 9 passes through the mixing chamber 5 to achieve separate quality water discharge for the water coming from the first water inlet 1 and the second water outlet 9.

[0045] In some embodiments, first water outlet control gates 10 are provided at both the first water inlet 1 and the first water outlet 8.

[0046] In practical applications, the setting of the first water outlet control gate 10 can block the incoming water by closing the first water inlet 1 when the switching gate 12 is opened.

[0047] In some embodiments, local drainage pits 7 are provided in the mixing chamber 5, the overflow chamber 4 and each water pump discharge chamber 3.

[0048] In practical applications, the setting of the local drainage pit 7 can facilitate the drainage of the water in the corresponding mixing chamber 5, the corresponding overflow chamber 4 or the corresponding water pump discharge chamber 3 when overhauling the equipment.

[0049] In some embodiments, equipment lifting holes 14 are provided near the installation positions of all gates at the top.

[0050] In some embodiments, railings 15 are provided near the four peripheral edges at the top.

[0051] As Figures 4 to 6 shown, the present invention also provides a use method of a two-in-two-out type water outlet mixing well capable of flexible water distribution, including three working conditions;

[0052] As Figure 4As shown, in the first operating condition, the pretreated effluent enters the mixing chamber 5 through the first inlet 1, flows through the mixing chamber 5 and the first outlet 8, and then enters the aerated grit chamber and subsequent treatment processes of the downstream sewage treatment plant. The first effluent control gate 10 is in the open state, the switching gate 12 and the second effluent channel control gate 11 are both closed, there is no effluent from the storage tank, the overflow chamber 4 is an empty chamber, and no effluent enters the main distribution well of the sewage treatment plant through the second outlet 9.

[0053] As Figure 5 shown, in the second operating condition, the effluent from the storage tank enters the pump outlet chamber 3 and the overflow chamber 4 in sequence through the second inlet 2, and then enters the main distribution well of the sewage treatment plant through the second outlet 9. The switching gate 12 is closed, the second effluent channel control gate 11 is open, and the first inlet 1 and the first outlet 8 operate normally.

[0054] As Figure 6 shown, in the third operating condition, the effluent from the storage tank enters the pump outlet chamber 3 and the overflow chamber 4 in sequence through the second inlet 2, and then enters the aerated grit chamber and subsequent treatment processes of the downstream sewage treatment plant through the first outlet 8 via the switching gate 12. The second effluent channel control gate 11 is closed, and the first effluent control gate 10 adjusts the opening degree according to the load of the downstream sewage treatment plant.

[0055] The preferred specific embodiments of the present invention have been described in detail above. It should be understood that those of ordinary skill in the art can make many modifications and variations based on the concept of the present invention without creative work. Therefore, all technical solutions that can be obtained by those skilled in the art in the technical field based on the concept of the present invention through logical analysis, reasoning, or limited experiments on the basis of the prior art should fall within the protection scope determined by the claims.

Claims

1. A two-in-two-out water mixing well with flexible water distribution; its characteristics are: It comprises an overflow bin (4) and a mixing bin (5); The mixing bin (5) is in the shape of a rectangular strip, with a first water inlet (1) provided at one end for receiving upstream pre-treated water through the first water inlet (1), and a first water outlet (8) provided at the other end for discharging the water flowing through the mixing bin (5) to the aeration sedimentation tank of the sewage treatment plant and subsequent treatment processes through the first water outlet (8), and a conversion gate (12) is provided between the mixing bin and the overflow bin (4); The overflow bin (4) is rectangular, one side of which is connected to the mixing bin (5), and the other side of which is provided with a plurality of water pump outlet bins (3) along the length direction, and a second water outlet (9) and a second water outlet control gate (11) for controlling the opening and closing of the second water outlet (9) are provided on the side wall connected to the mixing bin (5), and the second water outlet (9) is connected to the main water distribution well of the sewage treatment plant, and water is redistributed to different plant areas through the main water distribution well; The side wall of each water pump outlet bin (3) facing away from the overflow bin (4) receives water from the regulating reservoir lifting pump through the second water inlet (2), and is provided with a water pump outlet control gate (13), and an overflow weir (6) is provided between the overflow bin (4).

2. The two-in-two-out water mixing well with flexible water distribution according to claim 1 is characterized in that: The portion of the second water outlet (9) passing through the mixing chamber (5) is provided with an independent channel partition wall, so that water from the first water inlet (1) and the second water outlet (9) can be discharged in different qualities.

3. The two-in-two-out water mixing well with flexible water distribution according to claim 1 is characterized in that: The first water inlet (1) and the first water outlet (8) are both provided with a first water outlet control gate (10).

4. The two-in-two-out water mixing well capable of flexible water distribution according to claim 1 is characterized in that: The mixing chamber (5), the overflow chamber (4) and each of the water pump outlet chambers (3) are provided with a local drainage pit (7).

5. The two-in-two-out water mixing well capable of flexible water distribution according to claim 1 is characterized in that: Equipment hoisting holes (14) are provided at the top near all gates.

6. The two-in-two-out water mixing well capable of flexible water distribution according to claim 1 is characterized in that: Railings (15) are arranged at the top near the edges of the four sides.

7. The method for using the two-inlet and two-outlet water mixing well capable of flexible water distribution according to claim 1 is characterized in that: Includes three working conditions; In the first working condition, the pre-treated effluent enters the mixing chamber (5) through the first water inlet (1), flows through the mixing chamber (5) and the first water outlet (8), and then enters the aeration and grit chamber of the sewage treatment plant and subsequent treatment processes. The first effluent control gate (10) is in an open state, the conversion gate (12) and the second effluent channel control gate (11) are both closed, there is no effluent from the regulating reservoir, the overflow chamber (4) is empty, and no effluent enters the main water distribution well of the sewage treatment plant through the second water outlet (9); In the second working condition, the water discharged from the regulating reservoir enters the water pump outlet tank (3) and the overflow tank (4) in sequence through the second water inlet (2), and then enters the main water distribution well of the sewage treatment plant through the second water outlet (9), the conversion gate (12) is closed, the second outlet channel control gate (11) is opened, and the first water inlet (1) and the first water outlet (8) operate normally; In the third working condition, the outflow from the regulating reservoir enters the water pump outlet tank (3) and the overflow tank (4) in sequence through the second water inlet (2), and then enters the aeration and grit chamber of the downstream sewage treatment plant and subsequent treatment processes through the first water outlet (8) through the conversion gate (12). The second outlet channel control gate (11) is closed, and the first outlet control gate (10) adjusts the opening degree according to the load conditions of the downstream sewage treatment plant.

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