A sewage front-end treatment device and sewage front-end treatment method

Abstract

The present invention proposes a sewage front-end treatment device and a sewage front-end treatment method, the device includes a water distribution device, a combined drip filter treatment device, a sewage monitoring device and a combined control device; the combined drip filter treatment device includes a plurality of assemblies; the sewage monitoring device is used to monitor at least one effluent parameter of the sewage at the outlet end of the sewage front-end treatment device; the combined control device generates a combined control signal based on at least one effluent parameter of the sewage at the outlet end of the sewage front-end treatment device monitored by the sewage monitoring device to control the combined state of at least one assembly included in the combined drip filter treatment device and the water distribution state of the water distribution device. The present invention can realize adaptive control of the sewage front-end treatment process, so that the front-end sewage treatment result can match the post-stage sewage treatment system, and realize the improvement of sewage treatment efficiency of the whole process.

Description

Technical Field

[0001] The present invention belongs to the technical field of sewage treatment, and in particular relates to a sewage front-end treatment device and a sewage front-end treatment method. Background Art

[0002] Rural domestic sewage has complex components and high content of various organic matter. Therefore, the treatment of rural domestic sewage usually requires a multi-stage sewage treatment process. Usually, the multi-stage sewage treatment process includes a front-end treatment process and a back-end treatment process.

[0003] The front-end treatment process usually uses a biological trickling filter for primary treatment, so that the effluent meets general discharge standards or can be used for secondary resource utilization.

[0004] Trickling filters (frames) usually need to be filled with biological fillers. Through the action of biofilm, the more complete the contact between sewage, biofilm and air in the trickling filtration process, the better the sewage treatment effect. Since a single trickling filter (frame) is prone to uneven water distribution and insufficient water distribution area, multiple trickling filters (frames) are often overlapped and tiled to increase the contact area in actual applications.

[0005] However, in the prior art, most of them simply combine and superimpose multiple biological trickling filters (frames) in a static manner, and cannot be adjusted according to the actual effluent indicators of sewage treatment in the later stage; at the same time, the biological trickling filter usually exists as the front end of a more complex sewage treatment system, and its effluent parameters especially affect the efficiency of the subsequent sewage treatment system; when the effluent parameters of the front-end biological trickling filter cannot match the subsequent complex sewage treatment system, for example, when the effluent flow rate of the front-end biological trickling filter is low and cannot meet the minimum input flow rate of the rear-end sewage lifting system, the rear-end sewage lifting pump will be caused to run idle; and when the effluent flow rate is too fast, the rear-end sewage lifting pump may be overloaded; for another example, when the effluent indicators of the front-end biological trickling filter (for example, the organic matter content is too high), the effluent cannot be directly used for secondary resources (for example, for agricultural irrigation), nor can it be directly sent to the subsequent precision sewage treatment system (which may cause rust and damage to parts of the subsequent precision sewage treatment system).

[0006] It can be seen that the static treatment method of the existing front-end sewage treatment technology has various technical problems that need to be solved urgently. Summary of the invention

[0007] In order to solve all or part of the above-mentioned technical problems, the present invention proposes a sewage front-end treatment device and a sewage front-end treatment method.

[0008] In a first aspect of the present invention, a sewage front-end treatment device is provided, the sewage front-end treatment device comprising a water distribution device, a combined trickling filter treatment device and a combined control device;

[0009] The combined trickling filter treatment device includes a plurality of combined bodies;

[0010] The sewage front-end treatment device also includes a sewage monitoring device;

[0011] The sewage monitoring device is used to monitor at least one effluent parameter of sewage at the effluent end of the sewage front-end treatment device;

[0012] The combined control device communicates with the sewage monitoring device, and generates a combined control signal based on at least one effluent parameter of the sewage at the outlet end of the sewage front-end treatment device monitored by the sewage monitoring device, and controls the combined state of at least one combination included in the combined trickling filter treatment device and the water distribution state of the water distribution device based on the combined control signal.

[0013] Each of the combinations comprises at least one upper drip filter frame and one lower drip filter frame; the upper drip filter frame can slide within a predetermined distance on the top of the lower drip filter frame;

[0014] The water distribution device includes a water distribution pipe and a plurality of water distribution holes arranged on the water distribution pipe; the opening or closing state of each of the water distribution holes is adjustable.

[0015] The combined control device controls the combined state of at least one combined body included in the combined trickling filter treatment device and the water distribution state of the water distribution device based on the combined control signal, specifically including:

[0016] The combined control signal indicates the sliding direction and sliding distance of the upper drip filter frame of at least one combined body included in the combined drip filter treatment device on the top of the lower drip filter frame;

[0017] Furthermore, the combined control signal indicates an open or closed state of at least one water distribution hole on the water distribution pipe.

[0018] The combined control device controls the combined state of at least one combined body included in the combined trickling filter treatment device and the water distribution state of the water distribution device based on the combined control signal, specifically including:

[0019] The water distribution hole located directly above the drip filter frame of each assembly is controlled to be in an open state, and when there is no drip filter frame directly below a water distribution hole, the water distribution hole is controlled to be in a closed state.

[0020] The sewage monitoring device comprises a flow monitoring device, and the flow monitoring device is used to monitor the flow rate of sewage at the outlet end of the sewage front-end treatment device.

[0021] The sewage front-end treatment device is connected to the sewage rear-end lifting device, and the sewage at the outlet end of the sewage front-end treatment device enters the sewage rear-end lifting device;

[0022] The sewage rear-end lifting device has a source-end sewage parameter threshold condition;

[0023] When the effluent parameters of the sewage at the outlet end of the sewage front-end treatment device monitored by the sewage monitoring device do not meet the source-end sewage parameter threshold conditions, the combined control device generates the combined control signal.

[0024] The plurality of water distribution holes are evenly distributed on the water distribution pipe according to a first spacing;

[0025] The sliding distance is K times the first spacing, where K is a positive integer.

[0026] In a second aspect of the present invention, a sewage front-end treatment method is provided, wherein rural domestic sewage is treated by a front-end treatment device and then sent to a back-end treatment device, wherein the front-end treatment device comprises a water distribution device and a combined trickling filter treatment device;

[0027] The water distribution device is located above the combined trickling filter treatment device;

[0028] The combined drip filter treatment device comprises a plurality of assemblies; each of the assemblies comprises at least one upper drip filter frame and at least one lower drip filter frame; the upper drip filter frame can slide within a predetermined distance on the top of the lower drip filter frame;

[0029] The water distribution device comprises a water distribution pipe and a plurality of water distribution holes arranged on the water distribution pipe; the opening or closing state of each of the water distribution holes is adjustable;

[0030] The back-end processing equipment has water entry restriction parameters;

[0031] The method comprises the following steps:

[0032] S100: Initializing the combined state of each combined body included in the combined trickling filter treatment device;

[0033] S200: Treat rural domestic sewage through a front-end treatment device to obtain sewage effluent parameters after being treated by the front-end treatment device;

[0034] S300: Determine whether the sewage outflow parameter matches the inflow limit parameter;

[0035] If there is no match, a combined control parameter is generated;

[0036] S400: controlling the combined state of at least one combined body included in the combined trickling filter treatment device and the water distribution state of the water distribution device based on the combined control parameter, and returning to step S200;

[0037] The combined state of the combination includes the sliding direction and sliding distance of the upper drip filter frame of the combination on the top of the lower drip filter frame;

[0038] The water distribution state of the water distribution device includes an open or closed state of at least one water distribution hole on the water distribution pipe.

[0039] The upper drip filter frame and the lower drip filter frame of the assembly have the same specifications;

[0040] The step S100 includes:

[0041] The upper drip filter frame and the lower drip filter frame of each assembly are combined, and the bottom surface of the upper drip filter frame completely overlaps with the top surface of the lower drip filter frame.

[0042] The step S400 further includes:

[0043] The water distribution hole located directly above each drip filter frame of each assembly is controlled to be in an open state, and when there is no drip filter frame directly below a water distribution hole, the water distribution hole is controlled to be in a closed state.

[0044] The sewage front-end treatment device proposed in the present invention, wherein the combined trickling filter treatment device includes a plurality of trickling filter frames that can be combined up and down, and the upper trickling filter frame can slide within a predetermined range at the top of the lower trickling filter frame, thereby solving the problem in the prior art that a plurality of biological trickling filter tanks (frames) are statically combined and superimposed, and cannot be adjusted according to the effluent indicators of actual sewage treatment in the later stage; at the same time, the combined control device communicates with the sewage monitoring device, and generates a combined control signal based on at least one effluent parameter of the sewage at the effluent end of the sewage front-end treatment device monitored by the sewage monitoring device, and controls the combined state of at least one combination included in the combined trickling filter treatment device and the water distribution state of the water distribution device based on the combined control signal, so that the effluent parameters of the sewage front-end treatment device can be dynamically adjusted, and can adaptively match the complex sewage treatment system of the subsequent stage, thereby improving the sewage treatment efficiency while saving energy and reducing consumption.

[0045] Further advantages of the present invention will be further reflected in detail in the specific embodiments section in conjunction with the drawings of the specification. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0047] Figure 1 This is a schematic diagram of the composition of a sewage front-end treatment device according to an embodiment of the present invention.

[0048] Figure 2 This is a schematic diagram of the initial combination state of a combined trickling filter treatment device of a sewage front-end treatment device of the present invention.

[0049] Figure 3 A schematic diagram of a combined state change of a combined trickling filter treatment device of a sewage front-end treatment device of the present invention

[0050] Figure 4 is based on Figure 1 A flow chart of the steps of a sewage front-end treatment method implemented by a sewage front-end treatment device DETAILED DESCRIPTION

[0051] The invention is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0052] See also Figure 1 , Figure 1 It is a schematic diagram of the composition of a sewage front-end treatment device according to an embodiment of the present invention.

[0053] Figure 1 It is shown that the sewage front-end treatment device includes a water distribution device, a combined trickling filter treatment device and a combined control device.

[0054] The water distribution device comprises a water distribution pipe and a plurality of water distribution holes arranged on the water distribution pipe;

[0055] The combined trickling filter treatment device includes a plurality of combined bodies;

[0056] The sewage front-end treatment device also includes a sewage monitoring device;

[0057] The sewage monitoring device is used to monitor at least one effluent parameter of sewage at the effluent end of the sewage front-end treatment device;

[0058] The combined control device communicates with the sewage monitoring device, and generates a combined control signal based on at least one effluent parameter of the sewage at the outlet end of the sewage front-end treatment device monitored by the sewage monitoring device, and controls the combined state of at least one combination included in the combined trickling filter treatment device and the water distribution state of the water distribution device based on the combined control signal.

[0059] In a specific application, the sewage front-end treatment device is connected to the sewage rear-end lifting device, and the sewage at the outlet end of the sewage front-end treatment device enters the sewage rear-end lifting device;

[0060] The sewage rear-end lifting device has a source-end sewage parameter threshold condition;

[0061] When the effluent parameters of the sewage at the outlet end of the sewage front-end treatment device monitored by the sewage monitoring device do not meet the source-end sewage parameter threshold conditions, the combined control device generates the combined control signal.

[0062] As a specific illustrative example, the source-end sewage parameter threshold condition is the inlet flow rate value Vs; at this time, the outlet sewage parameter of the outlet sewage of the sewage front-end treatment device is the outlet flow rate value Vo;

[0063] When Vo<K1*Vs, it is considered that the effluent parameters of the effluent end sewage of the sewage front-end treatment device monitored by the sewage monitoring device do not meet the source end sewage parameter threshold condition;

[0064] Among them, K1 is the preset coefficient, 0.8<K1<1.2;

[0065] In the above specific application, the sewage monitoring device includes a flow monitoring device, and the flow monitoring device is used to monitor the flow rate Vo of the sewage at the outlet end of the sewage front-end treatment device.

[0066] When Vo<K1*Vs, the combined control device generates a combined control signal based on the flow velocity Vo of the sewage at the outlet end of the sewage front-end treatment device monitored by the sewage monitoring device and the inlet flow velocity value Vs, and controls the combined state of at least one combination included in the combined trickling filter treatment device and the water distribution state of the water distribution device based on the combined control signal.

[0067] The opening or closing state of each of the water distribution holes is adjustable.

[0068] Next, see Figure 2-Figure 4 , specifically introduces the combination state of the combination and the water distribution state of the water distribution device.

[0069] exist Figure 2In the figure, the initial combination state of the combination and the initial water distribution state of the water distribution device are shown.

[0070] Specifically, each of the combinations comprises at least one upper drip filter frame and one lower drip filter frame; the upper drip filter frame can slide within a predetermined distance on the top of the lower drip filter frame;

[0071] The water distribution device includes a water distribution pipe and a plurality of water distribution holes arranged on the water distribution pipe; the opening or closing state of each of the water distribution holes is adjustable.

[0072] Preferably, the upper drip filter frame and the lower drip filter frame of the assembly have the same specifications;

[0073] Figure 2-Figure 3 As shown in the figures, a sliding assembly, such as a slide rail, is provided at the bottom of the upper drip filter frame, through which the upper drip filter frame is stacked on the top of the lower drip filter frame, and the upper drip filter frame can slide within a predetermined range of the top of the lower drip filter frame.

[0074] In the initial assembly state, the upper drip filter frame and the lower drip filter frame of each assembly are assembled, and the bottom surface of the upper drip filter frame completely overlaps with the top surface of the lower drip filter frame.

[0075] At this time, if Figure 2 As shown, the sewage enters the upper drip filter frame and the lower drip filter frame c through the water distribution holes, and then flows out from the water outlet.

[0076] exist Figure 2 or Figure 3 In the embodiment, the plurality of water distribution holes are evenly distributed on the water distribution pipe according to a first spacing.

[0077] Specifically, in Figure 2 In the embodiment, the water distribution pipe includes 9 water distribution holes 1-2-3-...7-8-9;

[0078] At this time, the water distribution hole 3-4-5-6 is located directly above the assembly, so the water distribution hole 3-4-5-6 is in an open state; the other water distribution holes are in a closed state.

[0079] It can be seen that at this time, after the sewage enters the water distribution pipe, it needs to pass through multiple layers ( Figure 2 Only one (2 layers) sewage trickling filter frame is shown to process the sewage flowing out from the outlet water end.

[0080] It can be understood that under the initialization conditions, the contact time between the sewage and the trickling filter frame is the longest, and the outlet flow rate Vo is the lowest;

[0081] When Vo<K1*Vs, it is considered that the effluent parameters of the effluent end sewage of the sewage front-end treatment device monitored by the sewage monitoring device do not meet the source end sewage parameter threshold condition;

[0082] It is necessary to increase the water flow rate Vo, therefore, the combined control device generates a combined control signal so that Figure 2 The status changes to Figure 3 .

[0083] Specifically, the combined control signal indicates the sliding direction and sliding distance of the upper drip filter frame of at least one combined body included in the combined drip filter treatment device on the top of the lower drip filter frame;

[0084] Furthermore, the combined control signal indicates an open or closed state of at least one water distribution hole on the water distribution pipe.

[0085] The combined control device controls the combined state of at least one combined body included in the combined trickling filter treatment device and the water distribution state of the water distribution device based on the combined control signal, specifically including:

[0086] The water distribution hole located directly above the drip filter frame of each assembly is controlled to be in an open state, and when there is no drip filter frame directly below a water distribution hole, the water distribution hole is controlled to be in a closed state.

[0087] by Figure 3 For example, at this time, the upper drip filter frame of a combination moves to the right by a predetermined distance, and at the same time, the original open water distribution holes 3-4-5-6 are changed to open water distribution holes 4-5-6-7.

[0088] It can be understood that at this time, after the sewage enters the water distribution pipe and is distributed through the water distribution holes 4-5-6-7, at least part of the sewage ( Figure 3 It is no longer necessary to completely pass through multiple layers of multiple sewage trickling filter frames;

[0089] And only need to go through fewer levels ( Figure 3 After that, it will flow out from the outlet end, so the sewage outlet flow rate Vo of the front-end treatment system will increase.

[0090] Preferably, the specific size of the predetermined distance that the upper drip filter frame moves to the right can be determined by experience and historical values, and can also be performed by cyclic iteration of small step movements each time, for example, moving the unit length successively until the predetermined indicator is met, and then establishing a mapping table of the indicator change amount and the step length for backup, and continuously adjusting and updating it.

[0091] Preferably, the unit length is defined as the "first spacing" in which a plurality of water distribution holes are evenly distributed on the water distribution pipe at a first spacing, and the sliding distance is K times the first spacing, where K is a positive integer.

[0092] It can be seen that the determination of the above-mentioned moving distance better matches the change in the combined state of the combination and the change in the water distribution state of the water distribution device, and is very easy to implement in the algorithm, thereby improving the system processing performance.

[0093] based on Figure 1-Figure 3 , Figure 4 A flow chart of the steps of a sewage front-end treatment method is proposed.

[0094] exist Figure 4 In the method, rural domestic sewage is treated by a front-end treatment device and then sent to a back-end treatment device, wherein the front-end treatment device includes a water distribution device and a combined trickling filter treatment device;

[0095] The water distribution device is located above the combined trickling filter treatment device;

[0096] The combined drip filter treatment device comprises a plurality of assemblies; each of the assemblies comprises at least one upper drip filter frame and at least one lower drip filter frame; the upper drip filter frame can slide within a predetermined distance on the top of the lower drip filter frame;

[0097] The water distribution device comprises a water distribution pipe and a plurality of water distribution holes arranged on the water distribution pipe; the opening or closing state of each of the water distribution holes is adjustable;

[0098] The back-end processing equipment has water entry restriction parameters.

[0099] Figure 4 The method includes steps S100-S400, and each step is specifically implemented as follows:

[0100] S100: Initializing the combined state of each combined body included in the combined trickling filter treatment device;

[0101] S200: Treat rural domestic sewage through a front-end treatment device to obtain sewage effluent parameters after being treated by the front-end treatment device;

[0102] S300: Determine whether the sewage outflow parameter matches the inflow limit parameter;

[0103] If there is no match, a combined control parameter is generated;

[0104] S400: controlling the combined state of at least one combined body included in the combined trickling filter treatment device and the water distribution state of the water distribution device based on the combined control parameter, and returning to step S200;

[0105] The combined state of the combination includes the sliding direction and sliding distance of the upper drip filter frame of the combination on the top of the lower drip filter frame;

[0106] The water distribution state of the water distribution device includes an open or closed state of at least one water distribution hole on the water distribution pipe.

[0107] The upper drip filter frame and the lower drip filter frame of the assembly have the same specifications;

[0108] The step S100 includes:

[0109] The upper drip filter frame and the lower drip filter frame of each assembly are combined, and the bottom surface of the upper drip filter frame completely overlaps with the top surface of the lower drip filter frame.

[0110] The step S400 further includes:

[0111] The water distribution hole located directly above each drip filter frame of each assembly is controlled to be in an open state, and when there is no drip filter frame directly below a water distribution hole, the water distribution hole is controlled to be in a closed state.

[0112] Understandably, Figure 4 The water entry restriction parameter of the back-end processing equipment in the embodiment may be the aforementioned Figure 1-Figure 3 The "source sewage parameter" mentioned in the embodiment is the flow rate. At this time,

[0113] The step 300 is specifically implemented as follows:

[0114] When the effluent parameters of the sewage at the outlet end of the sewage front-end treatment device monitored by the sewage monitoring device do not meet the source-end sewage parameter threshold conditions, the combined control device generates the combined control signal.

[0115] certainly, Figure 4 The water inlet restriction parameter of the back-end treatment equipment in the embodiment may also be a sewage outlet index value, such as a maximum content value Amax of organic matter A, and the outlet parameter value of the sewage at the outlet end of the sewage front-end treatment device is the organic matter A content value Areal at the sewage outlet end;

[0116] If Areal>Amax, it is necessary to generate a combined control parameter, and control the combined state of at least one combined body included in the combined trickling filter treatment device and the water distribution state of the water distribution device based on the combined control parameter.

[0117] As an example, Areal needs to be lowered at this time. Therefore, the number of currently opened water distribution holes needs to be reduced, and the upper and lower drip filter frames of each assembly should be restored to their initial states as much as possible, thereby increasing the contact time and relative contact area between sewage and biofilm and improving the adsorption effect of organic matter.

[0118] It can be understood that in the above embodiment, a combination of multiple different sewage effluent index values ​​can be used to generate the combined control parameter.

[0119] For example, when step S300 is executed for the first time, it is first determined whether the sewage outflow parameter as the outflow flow rate value matches the inflow restriction parameter (the minimum threshold of the inflow flow rate at the source end); if not, a combined control parameter is generated and step S400 is executed;

[0120] After returning to step S200, it is determined again whether the sewage effluent parameter as the organic matter A content value matches the inlet water limit parameter (maximum content value of organic matter A); if not, a combined control parameter is generated and step S400 is executed again.

[0121] or,

[0122] When step S300 is executed for the first time, it is first determined whether the sewage effluent parameter as the organic matter A content value matches the inlet water limit parameter (maximum organic matter A content value); if not, a combined control parameter is generated and step S400 is executed;

[0123] After returning to step S200, it is determined again whether the sewage outflow parameter as the outflow flow rate value matches the inflow restriction parameter (the minimum threshold of the inflow flow rate at the source end); if not, a combined control parameter is generated and step S400 is executed again.

[0124] This will enable more accurate and effective front-end sewage treatment throughout the entire process.

[0125] The sewage front-end treatment device proposed in the present invention, wherein the combined trickling filter treatment device includes a plurality of trickling filter frames that can be combined up and down, and the upper trickling filter frame can slide within a predetermined range at the top of the lower trickling filter frame, thereby solving the problem in the prior art that a plurality of biological trickling filter tanks (frames) are statically combined and superimposed, and cannot be adjusted according to the effluent indicators of actual sewage treatment in the later stage; at the same time, the combined control device communicates with the sewage monitoring device, and generates a combined control signal based on at least one effluent parameter of the sewage at the effluent end of the sewage front-end treatment device monitored by the sewage monitoring device, and controls the combined state of at least one combination included in the combined trickling filter treatment device and the water distribution state of the water distribution device based on the combined control signal, so that the effluent parameters of the sewage front-end treatment device can be dynamically adjusted, and can adaptively match the complex sewage treatment system of the subsequent stage, thereby improving the sewage treatment efficiency while saving energy and reducing consumption.

[0126] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sewage front-end treatment device, comprising a water distribution device, a combined trickling filter treatment device and a combined control device; Features: The water distribution device is located above the combined trickling filter treatment device; The combined trickling filter treatment device includes a plurality of combined bodies; The sewage front-end treatment device also includes a sewage monitoring device; The sewage monitoring device is used to monitor at least one effluent parameter of the sewage at the effluent end of the sewage front-end treatment device; The combined control device communicates with the sewage monitoring device, and generates a combined control signal based on at least one effluent parameter of the sewage at the effluent end of the sewage front-end treatment device monitored by the sewage monitoring device, and controls the combined state of at least one combined body included in the combined trickling filter treatment device and the water distribution state of the water distribution device based on the combined control signal; Each of the combinations includes at least one upper drip filter frame and one lower drip filter frame; the upper drip filter frame can slide within a predetermined distance on the top of the lower drip filter frame; The water distribution device comprises a water distribution pipe and a plurality of water distribution holes arranged on the water distribution pipe; the opening or closing state of each of the water distribution holes is adjustable; The combined control device controls the combined state of at least one combined body included in the combined trickling filter treatment device and the water distribution state of the water distribution device based on the combined control signal, specifically including: The combined control signal indicates the sliding direction and sliding distance of the upper drip filter frame of at least one combined body included in the combined drip filter treatment device on the top of the lower drip filter frame; Furthermore, the combined control signal indicates an open or closed state of at least one water distribution hole on the water distribution pipe; The sewage front-end treatment device is connected to the sewage rear-end lifting device, and the sewage at the outlet end of the sewage front-end treatment device enters the sewage rear-end lifting device; The sewage rear-end lifting device has a source-end sewage parameter threshold condition; When the effluent parameters of the sewage at the outlet end of the sewage front-end treatment device monitored by the sewage monitoring device do not meet the source-end sewage parameter threshold conditions, the combined control device generates the combined control signal.

2. A sewage front-end treatment device according to claim 1, characterized in that: The combined control device controls the combined state of at least one combined body included in the combined trickling filter treatment device and the water distribution state of the water distribution device based on the combined control signal, specifically including: The water distribution hole located directly above the drip filter frame of each assembly is controlled to be in an open state, and when there is no drip filter frame directly below a water distribution hole, the water distribution hole is controlled to be in a closed state.

3. A sewage front-end treatment device according to claim 1, characterized in that: The sewage monitoring device comprises a flow monitoring device, and the flow monitoring device is used to monitor the flow rate of sewage at the outlet end of the sewage front-end treatment device.

4. A sewage front-end treatment device according to claim 1, characterized in that: The plurality of water distribution holes are evenly distributed on the water distribution pipe according to a first spacing; The sliding distance is K times the first spacing, where K is a positive integer.

5. A sewage front-end treatment method, wherein rural domestic sewage is treated by a front-end treatment device and then sent to a back-end treatment device, wherein the front-end treatment device includes a water distribution device and a combined drip filter treatment device; The water distribution device is located above the combined trickling filter treatment device; The combined drip filter treatment device comprises a plurality of assemblies; each of the assemblies comprises at least one upper drip filter frame and at least one lower drip filter frame; the upper drip filter frame can slide within a predetermined distance on the top of the lower drip filter frame; The water distribution device comprises a water distribution pipe and a plurality of water distribution holes arranged on the water distribution pipe; the opening or closing state of each of the water distribution holes is adjustable; The back-end processing equipment has water entry restriction parameters; The method comprises the following steps: S100: Initializing the combined state of each combined body included in the combined trickling filter treatment device; S200: Treat rural domestic sewage through a front-end treatment device to obtain sewage effluent parameters after being treated by the front-end treatment device; S300: Determine whether the sewage outflow parameter matches the inflow limit parameter; If there is no match, a combined control parameter is generated; S400: controlling the combined state of at least one combined body included in the combined trickling filter treatment device and the water distribution state of the water distribution device based on the combined control parameter, and returning to step S200; in, The combined state of the combination includes the sliding direction and sliding distance of the upper drip filter frame of the combination on the top of the lower drip filter frame; The water distribution state of the water distribution device includes an open or closed state of at least one water distribution hole on the water distribution pipe.

6. A sewage front-end treatment method as claimed in claim 5, characterized in that: The upper drip filter frame and the lower drip filter frame of the assembly have the same specifications; The step S100 includes: The upper drip filter frame and the lower drip filter frame of each assembly are combined, and the bottom surface of the upper drip filter frame completely overlaps with the top surface of the lower drip filter frame.

7. A sewage front-end treatment method according to claim 6, characterized in that: The step S400 further includes: The water distribution hole located directly above each drip filter frame of each assembly is controlled to be in an open state, and when there is no drip filter frame directly below a water distribution hole, the water distribution hole is controlled to be in a closed state.

Images