Pile foundation wharf sewage collection pool cleaning-free treatment system and use method

Abstract

The invention relates to a cleaning-free treatment system for a sewage collecting pool of a pile foundation wharf and a using method, and belongs to the technical field of sewage collecting pool maintenance. The system comprises a two-grid type sewage collecting pool, an overflow structure, a first set of flushing system, a second set of flushing system, a first submersible sewage pump and a second submersible sewage pump. The first grid of the two-grid type sewage collecting tank is used for precipitating mine coal slag, periodically washing to suspend sediment, and conveying the sediment and wastewater to a sewage treatment station in a rear storage yard area for treatment by a submersible sewage pump, and the second grid has better overflow inlet water quality, is not provided with a washing facility, and is directly pressurized by the submersible sewage pump to be conveyed to the sewage treatment station in the rear storage yard area for treatment; meanwhile, the tops of the two sewage collecting pools are communicated, so that the mine coal cinder cannot be deposited in the sewage collecting pools, workers do not need to regularly clean and pull out, and automatic program control and unattended operation can be set.

Description

Technical Field

[0001] The invention relates to the technical field of sewage collecting tank maintenance, and in particular to a system for cleaning-free treatment of sewage collecting tanks at pile foundation docks and a use method thereof. Background Art

[0002] When the wharf is loading and unloading bulk cargo such as ore or coal, flushing facilities will be set up at the wharf, and the wharf needs to collect flushing wastewater; gravity-type wharfs can directly set up drainage ditches with a certain slope, and discharge the water into the land treatment station through gravity flow; due to structural reasons, it is more difficult to set up sloped drainage ditches at pile-foundation wharfs. Therefore, drainage ditches and sewage collection tanks are usually set up at the wharf to collect flushing wastewater and initial rainwater on the wharf surface.

[0003] The traditional pile foundation wharf coal and mine sewage collection tank is usually stored according to the rainfall, that is, the initial rainwater volume. After the storage reaches a certain liquid level, the submersible sewage pump is started to transport it to the rear treatment station for treatment and reuse according to a certain time requirement. Since the collection tank has a certain water volume regulation function, it is bound to cause a certain residence time of mineral or coal-containing sewage, which causes the ore or coal dust in the rainwater to settle in the collection tank. Over time, a thick layer of sediment will form at the bottom, which requires workers to go down and clean it frequently, resulting in a certain amount of labor waste. In addition, due to the poor dark and humid working environment in the collection tank, it has a certain impact on the health of the workers.

[0004] Chinese patent CN205742468U, publication date: November 30, 2016, discloses a pump-type sewage treatment device, including a water storage tank, a first debris separation and recoil device, a second debris separation and recoil device, an inlet pipe valve device, a first strong discharge pipe valve system, a second strong discharge pipe valve system, a sewage pump and a control box; the first debris separation and recoil device and the second debris separation and recoil device are respectively installed on one side of the water storage tank, and the inlet pipe valve device is vertically arranged on the upper ends of the first debris separation and recoil device and the second debris separation and recoil device through pipelines; one end of the first strong discharge pipe valve system and the second strong discharge pipe valve system are respectively connected to the first debris separation and recoil device and the second debris separation and recoil device through pipelines. In the pump-type sewage treatment device, debris and sewage are temporarily stored after being separated in the separator, and then discharged together with the water flow pressure, truly realizing no sedimentation and no need for cleaning; it is highly practical and easy to promote and use.

[0005] The Chinese patent CN109879562A was published on June 14, 2019, and discloses a new type of septic tank device that does not require cleaning, including a septic tank, a sewage inlet, an exhaust outlet, an overflow outlet, a municipal sewage network, a water outlet, a circulating water pump, a water distribution pipe, a nozzle, municipal electricity, and a floor heating coil; the septic tank is provided with a sewage inlet, an exhaust outlet and an overflow outlet, the overflow outlet is connected to the municipal sewage network, the septic tank is also provided with a water outlet, the water outlet is located lower than the overflow outlet, the water outlet is connected to a circulating water pump, the circulating water pump is connected to a water distribution pipe, a number of nozzles are arranged on the water distribution pipe, the nozzles are facing the bottom of the septic tank, and a floor heating coil is laid at the bottom of the septic tank. The invention designs a circulating recoil stirring device and a self-regulating heating device in the septic tank, which not only puts the microorganisms that degrade feces at the optimal environmental temperature, but also makes the temperature in the septic tank evenly distributed through stirring. Compared with the traditional septic tank, not only the microbial degradation process is accelerated, but also the recoil stirring design solves the problem of accumulation of solid waste in the feces in the septic tank, thereby achieving the purpose of avoiding cleaning.

[0006] Chinese patent CN220887273U, publication date: May 3, 2024, discloses a farm sewage treatment process system, which has a sewage collection tank, and the feces and sewage coming out of the sewage collection tank are pumped into a solid-liquid separator for solid-liquid separation. After the solid-liquid separator, an anaerobic tank, an anoxic tank, an aerobic tank, a secondary sedimentation tank, an air flotation machine, a strong oxidation tank, an inclined sedimentation tank, a sludge tank and a filter press are arranged in sequence, wherein the secondary sedimentation tank is provided with a filter membrane structure, and the reflux mixed liquor coming out of the aerobic tank and the reflux sludge in the secondary sedimentation tank are returned to the anoxic tank, and the sludge deposited in the secondary sedimentation tank is sent to the sludge tank, and alkali is added during the reaction in the aerobic tank, and drug addition treatment is performed during the physical and chemical treatment in the air flotation machine, the sedimentation treatment in the inclined sedimentation tank, and the filtration operation of the filter press; the water coming out of the inclined sedimentation tank is discharged or reused as clean water; the process system proposes a new equipment system for centralized treatment of livestock and aquaculture sewage, which makes sewage treatment more thorough and efficient.

[0007] Based on the above search and the prior art, it is found that the current relevant patents focus on septic tank and aquaculture wastewater treatment, and do not involve coal mining wastewater collection tanks. They do not solve the problem of not affecting the collection and transfer functions of the collection tank while achieving the self-cleaning requirements of the sludge in the collection tank. Summary of the invention

[0008] In order to solve the above technical problems, the purpose of the present invention is to achieve the self-cleaning requirements of the sludge in the sewage collection tank without affecting the collection and transfer functions of the sewage collection tank. The sediment is re-suspended and transported together with the sewage and wastewater to the rear port area through a submersible sewage pump for treatment and reuse. By setting up an automatic flushing system, workers are avoided from regularly entering the sewage collection tank to clean out the sediment, which reduces the work intensity of the workers and creates a good working environment for the workers.

[0009] In order to achieve the above technical objectives, the present invention proposes a pile foundation wharf sewage collection tank cleaning-free treatment system and a use method, a pile foundation wharf sewage collection tank cleaning-free treatment system comprises a two-type collection tank, an overflow structure, a first flushing system, a second flushing system, a first submersible sewage pump and a second submersible sewage pump;

[0010] The overflow structure is located between the first sewage collecting tank and the second sewage collecting tank, and is used to connect the first sewage collecting tank and the second sewage collecting tank;

[0011] The two-compartment sewage collection tank comprises a first-compartment sewage collection tank and a second-compartment sewage collection tank;

[0012] The No. 1 submersible sewage pump is located inside the first sewage collection tank;

[0013] The second submersible sewage pump is located inside the second sewage collection tank;

[0014] The first flushing system includes a first flushing pipeline, a first nozzle, a first solenoid valve, and a second solenoid valve;

[0015] The second flushing system includes a second flushing pipeline, a second nozzle, and a third solenoid valve;

[0016] The first flushing pipeline is connected to the No. 1 submersible sewage pump, the No. 2 submersible sewage pump, the first nozzle, the No. 1 solenoid valve and the No. 2 solenoid valve wharf sewage and waste water pipe;

[0017] The second flushing pipeline is connected to the second nozzle, the third solenoid valve and the environmental protection water supply pipe;

[0018] The first nozzle and the second nozzle are located inside the first sewage collecting tank.

[0019] Preferably, the first sewage collecting tank and the second sewage collecting tank include a structural beam system consisting of hydraulic cross beams and longitudinal beams;

[0020] Preferably, the first sewage collection tank and the second sewage collection tank are both provided with a slope of 0.01 to 0.03, and a No. 1 submersible sewage pump and a No. 2 submersible sewage pump are respectively provided at the bottom of the slope;

[0021] Preferably, the lower part of the overflow structure is not connected;

[0022] Preferably, the height of the lower part of the overflow structure is not less than 0.6m and not more than 0.5 times the depth H of the sewage collection tank, and the value is 0.6m to 1.0m;

[0023] Preferably, the water source of the first flushing system comes from the No. 1 submersible sewage pump, and the water source of the second flushing system comes from the environmental protection water supply system of the wharf;

[0024] Preferably, the flow rate of the first flushing pipeline and the No. 1 submersible sewage pump is matched, and the water pressure is 0.25MPa to 0.4Mpa;

[0025] Preferably, the No. 1 submersible sewage pump and the No. 2 submersible sewage pump are both provided with a stirring function, and the stirring radius is not less than 0.5 m.

[0026] Preferably, the first flushing pipe and the second flushing pipe are both arranged along the side of the first sewage collecting tank;

[0027] Preferably, a plurality of first nozzles are spaced apart on the first flushing pipe;

[0028] Preferably, a plurality of second nozzles are spaced apart on the second flushing pipe;

[0029] Preferably, the first nozzle and the second nozzle are arranged alternately up and down;

[0030] Preferably, the second nozzle is arranged at a height of 0.3-0.4 m from the bottom of the first sewage collecting tank.

[0031] Preferably, the spacing between the first nozzles is 2m to 3m, and the spacing between the second nozzles is 2m to 3m;

[0032] Preferably, the opening direction of the first nozzle and the second nozzle are both 45° downward, and the diameter is 15-25 mm;

[0033] Preferably, the flow rates of the first nozzle and the second nozzle are both 10-20 m / s, and the sediment in the sewage collection tank is suspended again by the impact of high-velocity water flow.

[0034] A method for using a pile foundation wharf sewage collection tank cleaning-free treatment system comprises the following steps:

[0035] Step S1, the sewage and wastewater on the dock surface flows into the dock drainage ditch, flows into the first sewage collection tank through the sewage collection inlet pipe for static sedimentation, and after the sewage and wastewater in the first sewage collection tank reaches the overflow height, it enters the second sewage collection tank through the overflow structure;

[0036] Step S2: After the water level of the second sewage collection tank reaches a certain height, the second submersible sewage pump is started to send the sewage in the second sewage collection tank to the rear yard area for treatment and reuse through a pipeline;

[0037] Step S3: After the water level of the second sewage collection tank drops to the pump stop water level, the No. 2 submersible sewage pump automatically stops working; at the same time, the No. 1 submersible sewage pump in the first sewage collection tank is started, and the No. 2 solenoid valve is opened to flush the first sewage collection tank;

[0038] Step S4: After flushing for a certain period of time, first open the No. 1 solenoid valve, then close the No. 2 solenoid valve, and transport the resuspended sediments together with the sewage and wastewater to the rear port area treatment station for treatment and reuse;

[0039] Step S5: When the water level in the first sewage collection tank gradually drops to the pump stop water level, the submersible sewage pump and the No. 1 solenoid valve are turned off;

[0040] Step S6, open the No. 3 solenoid valve to start the second flushing system, and flush the sediment remaining at the bottom to the periphery of the submersible sewage pump again;

[0041] Step S7: After flushing for a certain period of time, close the No. 3 solenoid valve to end the flushing.

[0042] Compared with the prior art, the advantages and effects of the present invention are as follows:

[0043] 1. The sewage collecting tank of the present invention adopts a two-grid arrangement. The first grid is used for the precipitation of coal slag. The sediment is suspended by regular flushing. The sediment is transported to the sewage treatment station in the rear yard area together with the wastewater by the submersible sewage pump for treatment. The overflow water of the second grid has good water quality and is not provided with flushing facilities. It is directly pressurized by the submersible sewage pump and sent to the sewage treatment station in the rear yard area for treatment. At the same time, the tops of the two sewage collecting tanks are connected, which will not affect the use function of the effective volume. The advantage is that the coal slag will not form deposits in the sewage collecting tank, and workers do not need to clean it regularly, and an automated program can be set to control it unattended.

[0044] 2. The flushing pipeline of the present invention is arranged in the first sewage collection tank, which ensures the strength of the water spray in the flushing pipeline and solves the problem of insufficient nozzle range. The sediment can be lifted up again better. Finally, under the action of the stirring submersible sewage pump, the sediment is transported together with the sewage to the sewage treatment station in the rear yard area for treatment.

[0045] 3. The implementation of the present invention does not affect the design of the drainage system of the dock, and has the advantages of convenient construction, simple later operation and low cost.

[0046] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application so that it can be implemented in accordance with the contents of the specification, and to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the following is a detailed description of the preferred embodiments of the present application in conjunction with the accompanying drawings as follows.

[0047] Based on the detailed description of the specific embodiments of the present application in combination with the accompanying drawings below, those skilled in the art will become more aware of the above and other objects, advantages and features of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can also be obtained based on these drawings without creative work. In all drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

[0049] in:

[0050] Figure 1 This is the process plan of the traditional single-tank sewage collection tank at the pile foundation pier;

[0051] Figure 2 This is the process profile of a traditional single-tank sewage collection tank for a pile-based wharf. Figure 1 ;

[0052] Figure 3 This is the process profile of a traditional single-tank sewage collection tank for a pile-based wharf. Figure 2 ;

[0053] Figure 4 This is the process plan of the traditional double-tank sewage collection tank of the pile-foundation wharf;

[0054] Figure 5 The process section of the traditional double-tank sewage collection tank of the pile-based wharf Figure 1 ;

[0055] Figure 6 The process section of the traditional double-tank sewage collection tank of the pile-based wharf Figure 2 ;

[0056] Figure 7 This is a process plan view of a single-tank sewage collection tank for a pile-foundation wharf according to the present invention;

[0057] Figure 8 This is the process profile of the present invention for a single-tank sewage collection tank for a pile-based wharf Figure 1 ;

[0058] Fig. 9 This is the process profile of the present invention for a single-tank sewage collection tank for a pile-based wharf Figure 2 ;

[0059] Fig.10 This is a process plan view of a double-tank sewage collection tank for a pile-foundation wharf according to the present invention;

[0060] Fig.11 This is the process profile of the present invention for the double-tank sewage collection tank of the pile foundation wharf Figure 1 ;

[0061] Fig.12This is the process profile of the present invention for the double-tank sewage collection tank of the pile foundation wharf Figure 2 .

[0062] Explanation of the reference numerals: 1-first sewage collecting tank; 2-second sewage collecting tank; 3-wharf surface; 4-first flushing pipe; 5-first nozzle; 6-No. 1 solenoid valve; 7-No. 2 solenoid valve; 8-No. 3 solenoid valve; 9-second flushing pipe; 10-second nozzle; 11-closed cover plate; 12-wharf drainage ditch; 13-sewage collecting water inlet pipe; 14-No. 1 submersible sewage pump; 15-No. 2 submersible sewage pump; 16-hydraulic crossbeam; 17-hydraulic longitudinal beam; 18-single-tank sewage collecting tank; 19-drainage system; 20-traditional No. 1 sewage collecting tank; 21-traditional No. 2 sewage collecting tank; 22-connecting hole; 23-overflow wall; 24-overflow channel. DETAILED DESCRIPTION

[0063] To make the purpose, technical scheme and advantages of the embodiment of the present application clearer, the technical scheme in the embodiment of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the present application. Obviously, the described embodiment is a part of the embodiment of the present application, rather than all of the embodiments. In the following description, specific details such as specific configuration and components are provided only to help fully understand the embodiments of the present application. Therefore, it should be clear to those skilled in the art that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the present application. In addition, for clarity and brevity, the description of known functions and structures is omitted in the embodiment.

[0064] It should be understood that the references to "one embodiment" or "this embodiment" throughout the specification mean that the specific features, structures, or characteristics associated with the embodiment are included in at least one embodiment of the present application. Therefore, the references to "one embodiment" or "this embodiment" appearing throughout the specification do not necessarily refer to the same embodiment. In addition, these specific features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0065] In addition, the present application may repeat reference numerals and / or letters in different examples. This repetition is for the purpose of simplicity and clarity, and does not in itself indicate the relationship between the various embodiments and / or settings discussed.

[0066] The term "and / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, B exists alone, and A and B exist at the same time. The term " / and" in this article describes another type of association object relationship, indicating that there can be two relationships. For example, A / and B can mean: A exists alone, and A and B exist alone. In addition, the character " / " in this article generally indicates that the previous and next associated objects are in an "or" relationship.

[0067] The term "at least one" in this article is merely a description of the association relationship of associated objects, indicating that there may be three relationships. For example, at least one of A and B can mean: A exists alone, A and B exist at the same time, and B exists alone.

[0068] It should also be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusions.

[0069] Example 1

[0070] This embodiment is a prior art, and provides a treatment system for a traditional single-tank sewage collection tank at a dock.

[0071] Please refer to Figure 1-3 As shown, a treatment system of a traditional single-tank sewage collecting tank of a pile foundation wharf, the system includes a single-tank sewage collecting tank 18, a No. 1 submersible sewage pump 14, a No. 2 submersible sewage pump 15 and a drainage system 19, the No. 1 submersible sewage pump 14 and the No. 2 submersible sewage pump 15 are located inside the single-tank sewage collecting tank 18; the drainage system 19 is connected to the sewage and waste water pipe of the wharf; the sewage collecting tank includes a hydraulic crossbeam 16 and a hydraulic longitudinal beam 17; the drainage system 19 is connected to the No. 1 submersible sewage pump 14, the No. 2 submersible sewage pump 15 and the sewage and waste water pipe of the wharf.

[0072] The sewage from the dock surface layer 3 flows into the dock drainage ditch 12, and flows into the single-tank sewage collection tank 18 through the sewage collection inlet pipe 13; when the sewage reaches a certain height, the No. 1 submersible sewage pump 14 and the No. 2 submersible sewage pump 15 are started to discharge the sewage in the single-tank sewage collection tank 18 through the drainage system 19; manual cleaning of the sediment at the bottom of the single-tank sewage collection tank 18 is organized regularly.

[0073] Problems in the prior art: Since the single-tank sewage collection tank 18 has a certain water volume regulation function, the sewage will stay in the single-tank sewage collection tank 18 for a certain period of time, and the ore or coal dust in the rainwater will settle in the single-tank sewage collection tank 18, forming a thick layer of sediment at the bottom, which needs to be manually cleaned. The working environment in the sewage collection tank is dark and humid, and frequent manual cleaning not only causes labor waste, but is also not good for the health of workers.

[0074] Example 2

[0075] This embodiment is a prior art, and provides a treatment system for a traditional double-tank sewage collection tank of a pile-foundation wharf.

[0076] Please refer to Figure 4-6As shown, a treatment system of a traditional double-tank sewage collection tank of a pile foundation wharf, the system includes a traditional No. 1 sewage collection tank 20, a traditional No. 2 sewage collection tank 21, a No. 1 submersible sewage pump 14, a No. 2 submersible sewage pump 15 and a drainage system 19; a hydraulic longitudinal beam 17 is arranged between the traditional No. 1 sewage collection tank 20 and the traditional No. 2 sewage collection tank 21; a connecting hole 22 is arranged at the bottom of the hydraulic longitudinal beam 17; the No. 1 submersible sewage pump 14, the No. 2 submersible sewage pump 15 and the drainage system 19 are located inside the traditional No. 2 sewage collection tank 21; the traditional No. 1 sewage collection tank 20 and the traditional No. 2 sewage collection tank 21 are connected through the connecting hole 22; the drainage system 19 connects the No. 1 submersible sewage pump 14, the No. 2 submersible sewage pump 15 and the wharf sewage and waste water pipe.

[0077] The sewage from the dock surface layer 3 flows into the dock drainage ditch 12, and flows into the traditional No. 1 sewage collection tank 20 through the sewage collection inlet pipe 13; it also enters the traditional No. 2 sewage collection tank 21 through the connecting hole 22. When the sewage reaches a certain height, the No. 1 submersible sewage pump 14 and the No. 2 submersible sewage pump 15 are started to discharge the sewage in the traditional No. 1 sewage collection tank 20 through the drainage system 19; manual cleaning of the sediment at the bottom of the traditional No. 1 sewage collection tank 20 and the traditional No. 2 sewage collection tank 21 is organized regularly.

[0078] Problems in the prior art: Since the traditional double-tank sewage collection tank has a water volume regulation function, the sewage will stay in the traditional No. 1 sewage collection tank 20 and the traditional No. 2 sewage collection tank 21 for a certain period of time, and the ore or coal dust in the rainwater will settle and form sediment at the bottom of the sewage collection tank. These sediments will block the connecting holes and affect the normal water volume regulation of the traditional double-tank sewage collection tank, which requires frequent manual cleaning. The working environment in the sewage collection tank is dark and humid, and frequent manual cleaning not only causes labor waste, but is also not conducive to the health of workers.

[0079] Example 3

[0080] Based on the above-mentioned embodiment 1, this embodiment provides a treatment system of the present invention for a single-tank sewage collection tank of a pile-foundation wharf.

[0081] Please refer to Figure 7-9 As shown, a treatment system for a single sewage collection tank of a pile foundation wharf without washing, the system comprises a two-type sewage collection tank, an overflow wall 23, a first flushing system, a second flushing system, a first submersible sewage pump 14 and a second submersible sewage pump 15;

[0082] The two-grid sewage collection tank comprises a first grid sewage collection tank 1 and a second grid sewage collection tank 2;

[0083] The overflow wall 20 is located between the first sewage collecting tank 1 and the second sewage collecting tank 2;

[0084] The first submersible sewage pump 14 is located inside the first sewage collection tank 1;

[0085] The second submersible sewage pump 15 is located inside the second sewage collection tank 2;

[0086] The first flushing system includes a first flushing pipeline 4, a first nozzle 5, a No. 1 solenoid valve 6, and a No. 2 solenoid valve 7;

[0087] The second flushing system includes a second flushing pipeline 9, a second nozzle 10, and a third solenoid valve 8;

[0088] The first flushing pipeline 4 is connected to the No. 1 submersible sewage pump 14, the No. 2 submersible sewage pump 15, the first nozzle 5, the No. 1 solenoid valve 6 and the No. 2 solenoid valve 7 wharf sewage and waste water pipe;

[0089] The second flushing pipeline 9 is connected to the second nozzle 10, the third solenoid valve 8 and the environmental protection water supply pipe;

[0090] The first nozzle 5 and the second nozzle 10 are located inside the first sewage collecting tank 1 .

[0091] The first sewage collecting tank and the second sewage collecting tank include a structural beam system consisting of a hydraulic cross beam 16 and a hydraulic longitudinal beam 17;

[0092] The first sewage collecting tank 1 and the second sewage collecting tank 2 are both provided with a slope of 0.01 to 0.03, and a first submersible sewage pump 14 and a second submersible sewage pump 15 are respectively provided at the bottom of the slope;

[0093] The lower part of the overflow wall 20 is not connected; the height of the overflow wall 20 is not less than 0.6m and not higher than 0.5 times the depth H of the sewage collection tank, and the value is 0.6m to 1.0m.

[0094] Preferably, the flow rates of the first flushing pipeline 4 and the No. 1 submersible sewage pump 14 match, and the water pressure is 0.25 MPa to 0.4 MPa.

[0095] Preferably, the first flushing pipe 4 and the second flushing pipe 9 are both arranged along the side of the first sewage collecting tank 1;

[0096] Preferably, a plurality of first nozzles 5 are spaced apart on the first flushing pipe 4;

[0097] Preferably, a plurality of second nozzles 10 are spaced apart on the second flushing pipe 9;

[0098] Preferably, the first nozzle 5 and the second nozzle 10 are arranged alternately up and down;

[0099] Preferably, the second nozzle 10 is arranged at a height of 0.3-0.4 m from the bottom of the first sewage collecting tank 1 .

[0100] Preferably, the spacing between the first nozzles 5 is 2m to 3m, and the spacing between the second nozzles 10 is 2m to 3m;

[0101] Preferably, the opening direction of the first nozzle 5 and the second nozzle 10 are both 45° downward, and the diameter is 15-25 mm;

[0102] Preferably, the flow rates of the first nozzle 5 and the second nozzle 10 are both 10-20 m / s, and the sediment in the sewage collection tank is suspended again by the impact of high-velocity water flow.

[0103] Preferably, the water source of the first flushing system comes from the No. 1 submersible sewage pump 14, and the water source of the second flushing system comes from the environmental protection water supply system of the wharf.

[0104] Preferably, the No. 1 submersible sewage pump 14 and the No. 2 submersible sewage pump 15 are both provided with a stirring function, and the stirring radius is not less than 0.5 m.

[0105] Technical effect of this embodiment: The present invention sets an overflow wall in the two-compartment sewage collection tank, and the overflow wall connects the upper layer of the first sewage collection tank and the second sewage collection tank. The first sewage collection tank plays a sedimentation role, and the second sewage collection tank plays a collection role. When it rains at the dock, rainwater containing coal dust enters the first sewage collection tank for static sedimentation. After the water level reaches the height of the overflow wall, the clear liquid with better water quality in the upper layer enters the second sewage collection tank. After treatment, the sediment in the first sewage collection tank is sent to the rear treatment station for treatment and reuse, and the sewage in the second sewage collection tank is emptied. It can better meet the requirements of effective volume of sewage and wastewater in the tank and timely emptying.

[0106] Example 4

[0107] Based on the above-mentioned embodiment 2, this embodiment provides a treatment system of the present invention for a double-tank sewage collection tank of a pile foundation wharf.

[0108] Please refer to Figure 10-12 As shown, a double-tank sewage collection tank for a pile-based wharf without washing treatment system, the system includes a two-format sewage collection tank, an overflow structure 3, a first flushing system, a second flushing system, a first submersible sewage pump 14 and a second submersible sewage pump 15;

[0109] The two-grid sewage collection tank comprises a first grid sewage collection tank 1 and a second grid sewage collection tank 2;

[0110] The overflow structure 3 is located between the first sewage collecting tank 1 and the second sewage collecting tank 2;

[0111] The first submersible sewage pump 14 is located inside the first sewage collection tank 1;

[0112] The second submersible sewage pump 15 is located inside the second sewage collection tank 2;

[0113] The first flushing system includes a first flushing pipeline 4, a first nozzle 5, a No. 1 solenoid valve 6, and a No. 2 solenoid valve 7;

[0114] The second flushing system includes a second flushing pipeline 9, a second nozzle 10, and a third solenoid valve 8;

[0115] The first flushing pipeline 4 is connected to the No. 1 submersible sewage pump 14, the No. 2 submersible sewage pump 15, the first nozzle 5, the No. 1 solenoid valve 6 and the No. 2 solenoid valve 7 wharf sewage and waste water pipe;

[0116] The second flushing pipeline 9 is connected to the second nozzle 10, the third solenoid valve 8 and the environmental protection water supply pipe;

[0117] The first nozzle 5 and the second nozzle 10 are located inside the first sewage collecting tank 1 .

[0118] The first sewage collecting tank and the second sewage collecting tank include a structural beam system consisting of a hydraulic transverse beam 16 and a hydraulic longitudinal beam 17 .

[0119] The first sewage collecting tank 1 and the second sewage collecting tank 2 are both provided with a slope of 0.01 to 0.03, and a first submersible sewage pump 14 and a second submersible sewage pump 15 are respectively provided at the bottom of the slope;

[0120] Preferably, the overflow structure 3 includes an overflow channel 21;

[0121] Preferably, the overflow channel 21 is located on the hydraulic longitudinal beam 17 between the first sewage collecting tank 1 and the second sewage collecting tank 2;

[0122] The height of the overflow channel 21 from the bottom of the two-format sewage collection tank is not less than 0.6m;

[0123] The height is not higher than 0.5 times the depth H of the sewage collection tank, and is between 0.6m and 1.0m.

[0124] Preferably, the cross-sectional size of the overflow channel 21 is 200×200 mm to 300×300 mm;

[0125] Preferably, the flow rates of the first flushing pipeline 4 and the No. 1 submersible sewage pump 14 match, and the water pressure is 0.25 MPa to 0.4 MPa.

[0126] Preferably, the first flushing pipe 4 and the second flushing pipe 9 are both arranged along the side of the first sewage collecting tank 1; a plurality of first nozzles 5 are distributed at intervals on the first flushing pipe 4; a plurality of second nozzles 10 are distributed at intervals on the second flushing pipe 9; the first nozzles 5 and the second nozzles 10 are arranged alternately up and down; the second nozzles 10 are arranged at a height of 0.3 to 0.4 m from the bottom of the first sewage collecting tank 1.

[0127] Preferably, the spacing between the first nozzles 5 is 2m to 3m, and the spacing between the second nozzles 10 is 2m to 3m;

[0128] Preferably, the opening direction of the first nozzle 5 and the second nozzle 10 are both 45° downward, and the diameter is 15-25 mm;

[0129] Preferably, the flow rates of the first nozzle 5 and the second nozzle 10 are both 10-20 m / s, and the sediment in the sewage collection tank is suspended again by the impact of high-velocity water flow.

[0130] Preferably, the water source of the first flushing system comes from the No. 1 submersible sewage pump 14, and the water source of the second flushing system comes from the dock environmental protection water supply system.

[0131] Preferably, the No. 1 submersible sewage pump 14 and the No. 2 submersible sewage pump 15 are both provided with a stirring function, and the stirring radius is not less than 0.5 m.

[0132] Technical effect of this embodiment: The present invention adds an overflow channel and two flushing systems and a submersible sewage pump to the two sewage collection tanks composed of a crossbeam and a longitudinal beam. The overflow channel connects the upper layer of the first sewage collection tank and the second sewage collection tank. The first sewage collection tank plays a sedimentation role, and the second sewage collection tank plays a collection role. When it rains at the dock, rainwater containing coal dust enters the first sewage collection tank for static sedimentation. After the water level reaches the height of the overflow wall, the clear liquid with better water quality in the upper layer enters the second sewage collection tank. After treatment, the sediment in the first sewage collection tank is sent to the rear treatment station for treatment and reuse, and the sewage in the second sewage collection tank is emptied. It can better meet the requirements of effective volume and timely emptying of sewage in the tank.

[0133] Example 5

[0134] Based on the above-mentioned embodiments 3-4, this embodiment provides a method for using a system for cleaning-free treatment of sewage collection tanks at pile foundation docks.

[0135] A method for using a pile foundation wharf sewage collection tank cleaning-free treatment system comprises the following steps:

[0136] Step S1, the wastewater from the dock surface layer 3 flows into the dock drainage ditch 12, flows into the first sewage collection tank 1 through the sewage collection inlet pipe 13 for static sedimentation, and after the wastewater in the first sewage collection tank 1 reaches the overflow height, it enters the second sewage collection tank 2 through the overflow structure 3;

[0137] Step S2: After the water level of the second sewage collecting tank 2 reaches a certain height, the second submersible sewage pump 15 is started to send the sewage in the second sewage collecting tank 2 to the rear yard area for treatment and reuse through a pipeline;

[0138] Step S3, after the water level of the second sewage collecting tank 2 drops to the pump stop water level, the No. 2 submersible sewage pump 15 automatically stops working; at the same time, the No. 1 submersible sewage pump 14 in the first sewage collecting tank 1 is started, and the No. 2 solenoid valve 7 is opened to flush the first sewage collecting tank 1;

[0139] Step S4: After flushing for a certain period of time, first open the No. 1 solenoid valve 6, then close the No. 2 solenoid valve 7, and transport the resuspended sediments together with the sewage and wastewater to the rear port area treatment station for treatment and reuse;

[0140] Step S5, when the water level of the first sewage collection tank 1 gradually drops to the pump stop water level, the submersible sewage pump 14 and the first solenoid valve 6 are turned off;

[0141] Step S6, open the No. 3 solenoid valve 8 to start the second flushing system, and flush the sediment remaining at the bottom to the vicinity of the submersible sewage pump 14 again;

[0142] Step S7: After flushing for a certain period of time, close the No. 3 solenoid valve 8 to end the flushing.

[0143] The first submersible sewage pump 14 and the second submersible sewage pump 15 are controlled by a liquid level meter and start and stop according to the liquid level height;

[0144] The flushing time in step S4 is usually 1-5 minutes, and the flushing is performed until the water level in the first sewage collection tank 1 is flush with the height of the overflow wall;

[0145] The flushing time in step S7 is usually 1-5 minutes, which is set according to the actual operation conditions.

[0146] Technical effect of this embodiment: The present invention forms a cleaning-free treatment system by arranging an overflow structure, two flushing systems and a submersible sewage pump. The water pump in the first sedimentation tank is started, and the solenoid valve of the submersible sewage pump outlet pipe and the solenoid valve of the first flushing system are switched to achieve self-flushing of the water tank in the first 1-5 minutes after the water pump is started. A small amount of escaped suspended matter in the tank is flushed to the vicinity of the submersible sewage pump through the second flushing system solenoid valve to prevent long-term static sedimentation. The submersible sewage pump is started and stopped according to the liquid level height by a liquid level meter, so that an unattended treatment system is realized without the need for workers to clean it regularly and an automated program can be used to control the system.

[0147] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A system for cleaning-free sewage collection tanks at pile-foundation docks, characterized in that: The system comprises a two-type sewage collection tank, an overflow structure (3), a first flushing system, a second flushing system, a first submersible sewage pump (14) and a second submersible sewage pump (15); The two-compartment sewage collection tank comprises a first-compartment sewage collection tank (1) and a second-compartment sewage collection tank (2); The overflow structure (3) is located between the first sewage collecting tank (1) and the second sewage collecting tank (2); The first submersible sewage pump (14) is located inside the first sewage collection tank (1); The second submersible sewage pump (15) is located inside the second sewage collection tank (2); The first flushing system comprises a first flushing pipeline (4), a first nozzle (5), a first solenoid valve (6), and a second solenoid valve (7); The second flushing system comprises a second flushing pipeline (9), a second nozzle (10), and a third solenoid valve (8); The first flushing pipeline (4) is connected to a No. 1 submersible sewage pump (14), a No. 2 submersible sewage pump (15), a first nozzle (5), a No. 1 solenoid valve (6), a No. 2 solenoid valve (7) and a wharf sewage and waste water pipe; The second flushing pipeline (9) is connected to the second nozzle (10), the third solenoid valve (8) and the environmental protection water supply pipe; The first nozzle (5) and the second nozzle (10) are located inside the first sewage collecting tank (1).

2. A system for cleaning-free treatment of sewage collection tanks at pile-foundation docks according to claim 1, characterized in that: The first sewage collecting tank and the second sewage collecting tank comprise a structural beam system consisting of a hydraulic transverse beam (16) and a hydraulic longitudinal beam (17).

3. A system for cleaning-free treatment of sewage collection tanks for pile-based docks according to claim 1 or 2, characterized in that: The first sewage collecting tank (1) and the second sewage collecting tank (2) are both provided with a slope of 0.01 to 0.03, and a No. 1 submersible sewage pump (14) and a No. 2 submersible sewage pump (15) are respectively provided at the bottom of the slope.

4. A system for cleaning-free treatment of sewage collection tanks at pile-foundation docks according to claim 3, characterized in that: The lower part of the overflow structure (3) is not connected; the height of the lower part of the overflow structure (3) is not less than 0.6m and not more than 0.5 times the depth H of the sewage collection tank, and the value is 0.6m to 1.0m.

5. A system for cleaning-free treatment of sewage collection tanks at pile-foundation docks according to claim 4, characterized in that: The flow rates of the first flushing pipeline (4) and the first submersible sewage pump (14) are matched, and the water pressure is 0.25MPa to 0.4Mpa.

6. A system for cleaning-free treatment of sewage collection tanks at pile-foundation docks according to claim 5, characterized in that: The first flushing pipe (4) and the second flushing pipe (9) are both arranged along the side of the first sewage collecting tank (1); A plurality of first nozzles (5) are distributed at intervals on the first flushing pipe (4); A plurality of second nozzles (10) are distributed at intervals on the second flushing pipe (9); The first nozzle (5) and the second nozzle (10) are arranged alternately up and down; The second nozzle (10) is arranged at a height of 0.3-0.4 m from the bottom of the first sewage collecting tank (1).

7. A system for cleaning-free treatment of sewage collection tanks at pile-foundation docks according to claim 6, characterized in that: The spacing between the first nozzles (5) is 2m to 3m, and the spacing between the second nozzles (10) is 2m to 3m; The opening directions of the first nozzle (5) and the second nozzle (10) are both 45° downwardly inclined, and the diameters are both 15 to 25 mm; The flow rates of the first nozzle (5) and the second nozzle (10) are both 10 to 20 m / s, and are used to impact the sediment in the sewage collection tank.

8. A system for cleaning-free sewage collection tanks at pile-foundation docks according to claim 7, characterized in that: The water source of the first flushing system comes from the No. 1 submersible sewage pump (14), and the water source of the second flushing system comes from the environmental protection water supply system of the wharf.

9. A system for cleaning-free treatment of sewage collection tanks at pile-foundation docks according to claim 8, characterized in that: The No. 1 submersible sewage pump (14) and the No. 2 submersible sewage pump (15) are both provided with a stirring function, and the stirring radius is not less than 0.5 m.

10. The method for using the system according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step S1, the wastewater from the dock surface layer (3) flows into the dock drainage ditch (12), flows into the first sewage collection tank (1) through the sewage collection inlet pipe (13) for static sedimentation, and after the wastewater in the first sewage collection tank (1) reaches the overflow height, it enters the second sewage collection tank (2) through the overflow structure (3); Step S2, after the water level of the second sewage collecting tank (2) reaches a certain height, the second submersible sewage pump (15) is started to send the sewage in the second sewage collecting tank (2) to the rear yard area for treatment and reuse through a pipeline; Step S3: After the water level of the second sewage collecting tank (2) drops to the pump stop water level, the No. 2 submersible sewage pump (15) automatically stops working; at the same time, the No. 1 submersible sewage pump (14) in the first sewage collecting tank (1) is started, and the No. 2 solenoid valve (7) is opened to flush the first sewage collecting tank (1); Step S4: After flushing for a certain period of time, first open the No. 1 solenoid valve (6), then close the No. 2 solenoid valve (7), and transport the resuspended sediments together with the sewage to the rear port treatment station for treatment and reuse; Step S5, when the water level of the first sewage collection tank (1) gradually drops to the pump stop water level, the submersible sewage pump (14) and the first solenoid valve (6) are turned off; Step S6, opening the No. 3 electromagnetic valve (8) to start the second flushing system, and flushing the sediment remaining at the bottom to the vicinity of the submersible sewage pump (14) again; Step S7: After a certain period of flushing, close the No. 3 electromagnetic valve (8) to end the flushing.

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