Lateral flow inclined plate sedimentation device

Abstract

The utility model belongs to the field of sewage treatment, and particularly relates to a lateral flow inclined plate sedimentation device which comprises a tank body, and the tank body comprises a coagulation area, a flocculation area, a curing area, a sedimentation area and a clear water area which are sequentially arranged in the water flow direction; the settling zone comprises an inclined plate zone and a sludge zone positioned below the inclined plate zone; the lateral flow inclined plate sedimentation device further comprises a water inlet perforated lattice wall and a water outlet perforated lattice wall; the water inlet perforated lattice wall is positioned between the curing area and the inclined plate area and is used for communicating the curing area with the inclined plate area; the water outlet perforated lattice wall is located between the inclined plate area and the clear water area and enables the inclined plate area and the clear water area to be communicated. The direction of the water inlet perforated lattice wall towards the water outlet perforated lattice wall is defined as a first linear direction; the first linear direction is a horizontal direction. According to the inclined plate sedimentation tank, the problems of low surface load and the like of the existing inclined plate sedimentation tank are solved.

Description

Technical Field

[0001] The utility model belongs to the field of sewage treatment, and more specifically relates to a lateral flow inclined plate sedimentation device. Background Art

[0002] In the existing technology, most water treatment projects require solid-liquid separation, and the sedimentation process relying on gravity is the simplest and most economical solid-liquid separation process. Early sedimentation tanks have forms such as horizontal flow, vertical flow and radial flow. Due to their large pool depth, the overall separation efficiency is very low. The shallow pool theory is the ideal state pursued by the sedimentation process. The efficiency of the inclined plate or inclined tube sedimentation tank designed according to the shallow pool theory is significantly improved. For example, the theoretical efficiency (calculated by liquid surface load) of the upward flow inclined plate sedimentation tank with a plate spacing of 30-50mm is 6-9 times that of the horizontal flow sedimentation tank, and the actual efficiency is often higher, generally 7-10 times, because the water flow between the inclined plates (tubes) is in a laminar state, that is, the hydraulic radius is small, which is more conducive to sedimentation and separation. High-efficiency sedimentation can save a lot of construction land for the project.

[0003] The heterogeneous flow inclined plate (tube) sedimentation tank is the most widely used in actual engineering. The inclined plate (tube) is at a certain angle to the horizontal plane (usually 60 degrees). The water flows from bottom to top in the inclined plate (tube), and the sludge particles settle in the inclined plate (tube) and slide down along the inclined plate (tube). Since the flow direction of the sludge is opposite to that of the water, it will cause muddy water disturbance when the flow rate is too high; the peak inclined tube area surface load is generally not higher than 16m / h. In the heterogeneous flow inclined plate (tube) sedimentation tank, when the SS concentration is high due to the large dose of agents such as fluorine removal, powder carbon adsorption, silicon removal and hardness removal, the sludge precipitated on the inclined plate (tube) occupies a certain space of the inclined plate (tube) gap, resulting in a reduction in the water flow section, thereby increasing the flow rate of the inclined plate (tube), which is easy to bring out the SS precipitated on the plate (tube). Therefore, the SS concentration of the influent of the countercurrent inclined plate (tube) sedimentation tank cannot be too high (too high will easily clog the inclined tube), and the inclined tube needs to be flushed regularly (on a monthly basis). The half-tank is emptied during cleaning, which affects the normal operation of the water plant and is labor-intensive to flush the inclined plate (tube). This type of tank requires the setting of a pre-sedimentation area and an intermediate outlet channel, which occupies the sedimentation area space, increasing investment and land occupation. In addition, the setting of buffer zones on the upper and lower layers of the inclined plate (tube) and the setting of the upper outlet trough make the pool deeper (generally about 6-7m), which on the one hand increases investment, and on the other hand requires the setting of sunshade facilities on the upper part of the sedimentation area to prevent algae from growing in the outlet trough. In addition, due to the limitation of the pool depth, the length of the inclined tube (plate) cannot be extended, and the surface load is low. Utility Model Content

[0004] 1. Problem to be solved

[0005] Aiming at the problem of low surface load of the sedimentation tank in the existing inclined plate sedimentation tank, the utility model provides a lateral flow inclined plate sedimentation device which can improve the above problem.

[0006] 2. Technical solution

[0007] In order to solve the above problems, the technical solution adopted by the utility model is as follows:

[0008] The utility model provides a lateral flow inclined plate sedimentation device, comprising a tank body, wherein the tank body comprises a coagulation zone, a flocculation zone, a maturation zone, a sedimentation zone and a clear water zone arranged in sequence along the water flow direction; the sedimentation zone comprises an inclined plate zone and a sludge zone located below the inclined plate zone;

[0009] The lateral flow inclined plate sedimentation device further comprises an inlet perforated flower wall and an outlet perforated flower wall; the inlet perforated flower wall is located between the maturation zone and the inclined plate zone and connects the maturation zone and the inclined plate zone; the outlet perforated flower wall is located between the inclined plate zone and the clean water zone and connects the inclined plate zone and the clean water zone;

[0010] The direction from the water inlet perforated flower wall toward the water outlet perforated flower wall is defined as a first straight line direction; the first straight line direction is a horizontal direction.

[0011] Furthermore, the pool body is provided with a water inlet; the water inlet is connected to the coagulation zone for passing raw water to be treated into the coagulation zone.

[0012] Furthermore, the tank body is provided with a first communication port; the first communication port is located between the coagulation zone and the flocculation zone.

[0013] Furthermore, the tank body is provided with a second communication port; the second communication port is located between the flocculation zone and the maturation zone.

[0014] Furthermore, the pool body is provided with a water outlet; the water outlet is connected to the clean water area for discharging the clarified water in the clean water area.

[0015] Furthermore, the lateral flow inclined plate sedimentation device also includes a first agitator, which includes a first agitator blade and a first motor for driving the first agitator blade, and the first agitator blade is arranged in the coagulation zone and close to the bottom of the coagulation zone.

[0016] Furthermore, the first agitator is constructed as an axial flow mechanical agitator.

[0017] Furthermore, the first stirring blade comprises 1-3 layers of paddle blades.

[0018] The specific number of blade layers can be determined by technicians based on the diameter-to-depth ratio of the coagulation tank.

[0019] Furthermore, the lateral flow inclined plate sedimentation device also includes a guide tube located in the flocculation zone, and the guide tube is provided with a water inlet end and a water outlet end; the water inlet end is closer to the bottom of the flocculation zone than the water outlet end and is connected to the coagulation zone.

[0020] Furthermore, the lateral flow inclined plate sedimentation device also includes a dosing ring connected to the guide tube, which is used to add flocculants into the guide tube; the dosing ring is externally connected to a dosing pipe.

[0021] Furthermore, the lateral flow inclined plate sedimentation device also includes a second agitator, the second agitator includes a second agitating blade and a second motor driving the second agitating blade, and the second agitating blade is located in the guide tube.

[0022] Furthermore, the second agitator is constructed as an upward-lifting axial flow agitator.

[0023] Furthermore, the second stirring blade comprises a single-layer paddle blade.

[0024] Furthermore, the bottom of the maturation zone gradually rises along the first straight line direction.

[0025] The reason for adopting the above technical solution is that the bottom of the maturation zone gradually rises along the first straight line direction to form a slope, which can prevent mud from accumulating on the bottom.

[0026] Furthermore, a plurality of parallel inclined plates are provided in the inclined plate area; and an angle between the inclined plates and the first direction is 55-60°.

[0027] Furthermore, the inclined plate is detachably connected to the pool wall in the inclined plate area.

[0028] For example, the detachable connection method is a card slot connection.

[0029] Furthermore, the vertical load of the inclined plate area is 15-50m 3 / m 2 / h; the inclined length of the inclined plate is 1.5-3m.

[0030] By adopting the above technical solution, the inclined plate can be pulled out from above the pool surface for separate cleaning without stopping the water supply for cleaning.

[0031] Furthermore, a reflux port is provided at the bottom of the sludge zone, and the reflux port is connected to the flocculation zone for refluxing part of the sludge in the sedimentation zone to the flocculation zone.

[0032] Furthermore, a reflux pipe is provided between the reflux port and the flocculation zone to connect them.

[0033] Furthermore, a mud discharge port is provided at the bottom of the mud area, and a mud discharge pipe is externally connected to the mud discharge port for discharging the settled sludge.

[0034] Furthermore, a scraper lower part and a sludge hopper inner part are provided at the bottom of the sludge area; the scraper lower part gradually protrudes from the sludge area pool wall toward the center of the sludge area; the sludge hopper inner part gradually shrinks along the gravity direction; the height of the scraper lower part is higher than the height of the sludge hopper inner part; the reflux port is located between the scraper lower part and the sludge hopper inner part; the height of the sludge hopper inner part is higher than the height of the sludge discharge port.

[0035] By adopting the above technical scheme, the sludge settled in the inclined plate area can first slide from the lower part of the scraper to the edge of the sludge area, and then enter the sludge hopper, part of it flows out from the reflux port, and returns to the flocculation area through the reflux pipe; another part of the sludge is gathered in the sludge hopper and enters the sludge discharge port and the sludge discharge pipe.

[0036] Furthermore, the lateral flow inclined plate sedimentation device also includes a scraper, which includes a scraper plate and a third motor driving the scraper plate; the scraper plate is located between the lower part of the scraper and the inner part of the sludge hopper.

[0037] Furthermore, the scraper is constructed as a suspended sludge thickener.

[0038] Furthermore, the lateral flow inclined plate sedimentation device also includes an instrument system and a control system; the instrument system includes an inlet flow meter, an inlet online turbidity meter and a pH meter, an outlet online turbidity meter, a sludge return flow meter and a residual sludge flow meter, a coagulant dosing flow meter, and a flocculant dosing flow meter; the control system automatically controls the first agitator (generally industrial frequency), the second agitator (generally variable frequency), the scraper (generally industrial frequency), the sludge return pump (generally variable frequency) and the residual sludge pump (generally industrial frequency) as well as the dosing of coagulants and flocculants by collecting raw water volume and inlet and outlet SS data information.

[0039] The operation process of the lateral flow inclined plate sedimentation device of the utility model is:

[0040] The raw water to be treated is introduced into the coagulation zone through the water inlet. The hydraulic retention time in the coagulation zone is 2-30 minutes. An axial flow mechanical agitator is installed in the coagulation zone with a stirring intensity of 80-170W / m 3 , add coagulant in the coagulation zone, so that the colloid and SS in the raw water begin to destabilize and form small flocs under the action of the coagulant, and then enter the flocculation zone through the first connecting port; the hydraulic retention time in the flocculation zone is 7-20 minutes, and the lifting axial flow agitator and the matching guide tube and dosing ring are set in the flocculation zone. The stirring intensity of the lifting axial flow agitator is 30-55W / m3 The lifting axial flow agitator and the guide tube can form a circulation flow rate of 8-12 times; anion PAM is added in the dosing ring, and the small flocs in the water from the coagulation zone become large flocs through the adsorption bridging effect of PAM, and enter the maturation zone through the second connecting port. The flocs are further enlarged in the maturation zone. The rising flow rate in the maturation zone is 0.01-0.1m / s, and the hydraulic retention time is 2-4 minutes. Then, the water is evenly distributed to the inclined plate area through the water inlet perforated flower wall. The water flows horizontally, and the sludge settles vertically downward along the surface of the inclined plate. The vertical load of the inclined plate area is 15-50m 3 / m 2 / h, the inclined length of the inclined plate is 1.5-3m. In the inclined plate area, since the water flow and particle sedimentation directions are perpendicular, the problem that sludge is easily carried out due to the opposite direction of water flow and particle sedimentation in the inclined plate sedimentation tank can be effectively solved. The vertical distance between the bottom of the water distribution hole of the inlet perforated flower wall and the surface of the sludge layer in the sludge area is 300-1000mm, which can avoid disturbing the sludge in the sludge layer. A water outlet perforated flower wall is set at the end of the inclined plate area. The clarified water after the inclined plate sedimentation enters the clear water area through the water outlet perforated flower wall, and enters the subsequent unit after passing through the outlet. The design of the water outlet flower wall is basically the same as the water flower wall.

[0041] The sludge in the sludge area is concentrated by the suspended sludge thickener, and the chemically active activated sludge in the upper part of the sludge area is returned to the flocculation area through the return port and the return pipe by the sludge return pump, with a return ratio of 2-5%. The chemically inactive sludge collected in the sludge hopper is regularly discharged to the sludge storage tank from the sludge discharge port and the sludge discharge pipe by the residual sludge pump.

[0042] 3. Beneficial effects

[0043] Compared with the prior art, the beneficial effects of the utility model are:

[0044] (1) Compared with the heterogeneous flow inclined plate sedimentation tank, the lateral flow inclined plate sedimentation device provided by the utility model has a surface load increased by about 20-50%, a pool depth reduced by 1-2m, and a pool capacity reduced by more than 10%; and is suitable for situations where large doses of agents such as fluorine removal, powder carbon adsorption, and silicon and hardness removal are added to cause a high SS concentration and the particles are relatively light and difficult to settle;

[0045] (2) In the lateral flow inclined plate sedimentation device provided by the utility model, the inclined plate can be drawn out and cleaned separately without the need for precipitation flushing.

[0046] (3) The lateral flow inclined plate sedimentation device provided by the utility model does not require a water outlet trough and upper sunshade facilities.

[0047] (4) The inclined plate of the lateral flow inclined plate sedimentation device provided by the utility model has water distributed at the water inlet end by a water inlet perforated flower wall, and water discharged at the water outlet end by a water outlet perforated flower wall, so that the water flow is dispersed, the water flow velocity can be reduced, and the disturbance to the sedimentation process can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 It is a schematic diagram of the overall structure of the lateral flow inclined plate sedimentation device in Example 1;

[0049] Figure 2 is a schematic structural diagram of the inclined plate in Example 1;

[0050] Figure 1 and Figure 2 In the figure, the blue arrows and the corresponding lines indicate the flow path of the water body; the red arrows and the corresponding lines indicate the coagulant addition path; the green arrows and the corresponding lines indicate the flocculant addition path; the yellow arrows and the corresponding lines indicate the sludge return path in the sedimentation area; the magenta arrows and the corresponding lines indicate the sludge discharge path.

[0051] Description of Reference Numerals

[0052] 1. Lateral flow inclined plate sedimentation device;

[0053] 100, tank body; 110, coagulation zone; 120, flocculation zone; 130, maturation zone; 140, sedimentation zone; 141, inclined plate zone; 142, inclined plate; 143, sludge zone; 144, return port; 145, return pipe; 146, sludge discharge port; 147, sludge discharge pipe; 148, lower part of sludge scraper; 149, inner part of sludge hopper; 150, clean water zone; 160, water inlet; 170, first connecting port; 180, second connecting port; 190, water outlet;

[0054] 200, water inlet perforated flower wall;

[0055] 300, water-outlet perforated flower wall;

[0056] 400, a first stirrer; 410, a first stirring blade; 420, a first motor;

[0057] 500, guide tube; 510, water inlet end; 520, water outlet end;

[0058] 600, dosing ring;

[0059] 700, dosing tube;

[0060] 800, second stirrer; 810, second stirring blade; 820, second motor;

[0061] 900, mud scraper; 910, mud scraper; 920, third motor;

[0062] 2. The first straight line. DETAILED DESCRIPTION

[0063] It should be noted that when an element is referred to as being "mounted" on another element, it may be directly on the other element or the two elements may be directly integrated; when an element is referred to as being "connected" to another element, it may be directly connected to the other element or the two elements may be directly integrated. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and the like cited in this specification are only for the convenience of description, and are not used to limit the scope of implementation. Changes or adjustments in their relative relationships shall also be regarded as the scope of implementation of the utility model without substantial changes in the technical content.

[0064] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which the present invention belongs; the term "and / or" used herein includes any and all combinations of one or more of the associated listed items.

[0065] If the specific conditions are not specified in the examples, the experiments were carried out under conventional conditions or conditions recommended by the manufacturer. If the manufacturers of the reagents or instruments are not specified, they are all conventional products that can be purchased commercially.

[0066] As used herein, the term "about" is used to provide flexibility and imprecision associated with a given term, measurement or value. The degree of flexibility for a particular variable can be easily determined by one skilled in the art.

[0067] As used herein, "adjacent" refers to the proximity of two structures or elements. Specifically, elements identified as "adjacent" can be adjacent or connected. Such elements can also be close to or in proximity to each other without necessarily touching each other. In some cases, the precise degree of proximity can depend on the specific context.

[0068] As used herein, the term "at least one of" is intended to be synonymous with "one or more of." For example, "at least one of A, B, and C" expressly includes only A, only B, only C, and combinations of each thereof.

[0069] Concentration, amount and other numerical data can be presented in range format herein.It should be understood that such range format is only used for convenience and simplicity, and should be flexibly interpreted as not only including the numerical value clearly described as range limit, but also including all single numerical values ​​or sub-ranges contained in the range, just as each numerical value and sub-range are clearly described.For example, the numerical range of about 1 to about 4.5 should be interpreted as not only including the limit value of 1 to about 4.5 clearly described, but also including single numerals (such as 2,3,4) and sub-ranges (such as 1 to 3,2 to 4, etc.).The same principle is applicable to the scope of only narrating a numerical value, such as "less than about 4.5", which should be interpreted as including all the above-mentioned values ​​and ranges.In addition, no matter how the breadth of the described range or feature is, this explanation should be applicable.

[0070] The utility model is further described below in conjunction with specific embodiments.

[0071] Example 1

[0072] like Figure 1 and Figure 2 As shown, this embodiment provides a lateral flow inclined plate sedimentation device 1, comprising a tank body 100, wherein the tank body 100 comprises a coagulation zone 110, a flocculation zone 120, a maturation zone 130, a sedimentation zone 140 and a clear water zone 150 sequentially arranged along the water flow direction; the sedimentation zone 140 comprises an inclined plate zone 141 and a sludge zone 143 located below the inclined plate zone 141;

[0073] The lateral flow inclined plate sedimentation device 1 further comprises an inlet perforated flower wall 200 and an outlet perforated flower wall 300; the inlet perforated flower wall 200 is located between the maturation zone 130 and the inclined plate zone 141 and connects the maturation zone 130 and the inclined plate zone 141; the outlet perforated flower wall 300 is located between the inclined plate zone 141 and the clean water zone 150 and connects the inclined plate zone 141 and the clean water zone 150;

[0074] The direction from the water inlet perforated flower wall 200 toward the water outlet perforated flower wall 300 is defined as the direction of the first straight line 2; the direction of the first straight line 2 is a horizontal direction.

[0075] Specifically, the tank body 100 is provided with a water inlet 160; the water inlet 160 is connected to the coagulation zone 110 for passing the raw water to be treated into the coagulation zone 110. The tank body 100 is provided with a first communication port 170; the first communication port 170 is located between the coagulation zone 110 and the flocculation zone 120. The tank body 100 is provided with a second communication port 180; the second communication port 180 is located between the flocculation zone 120 and the maturation zone 130. The tank body 100 is provided with a water outlet 190; the water outlet 190 is connected to the clear water zone 150 for discharging the clarified water in the clear water zone 150.

[0076] More specifically, the lateral flow inclined plate sedimentation device 1 further includes a first agitator 400, the first agitator 400 includes a first agitator blade 410 and a first motor 420 driving the first agitator blade 410, the first agitator blade 410 is arranged in the coagulation zone 110 and close to the bottom of the coagulation zone 110. The first agitator 400 is configured as an axial flow mechanical agitator. The first agitator blade 410 includes two layers of paddle blades.

[0077] More specifically, the lateral flow inclined plate sedimentation device 1 further includes a guide tube 500 located in the flocculation zone 120, and the guide tube 500 is provided with a water inlet end 510 and a water outlet end 520; the water inlet end 510 is closer to the bottom of the flocculation zone 120 than the water outlet end 520 and is connected to the coagulation zone 110. The lateral flow inclined plate sedimentation device 1 further includes a dosing ring 600 connected to the guide tube 500, for adding flocculants into the guide tube 500; the dosing ring 600 is externally connected to a dosing pipe 700.

[0078] More specifically, the lateral flow inclined plate sedimentation device 1 further includes a second agitator 800, the second agitator 800 includes a second agitating blade 810 and a second motor 820 for driving the second agitating blade 810, and the second agitating blade 810 is located in the guide tube 500. The second agitator 800 is configured as an upward-lifting axial flow agitator. The second agitating blade 810 includes a single-layer paddle.

[0079] More specifically, the bottom of the aging zone 130 gradually rises along the direction of the first straight line 2 .

[0080] More specifically, the inclined plate area 141 is provided with a plurality of parallel inclined plates 142; the angle between the inclined plates 142 and the first direction is 60°. The inclined plates 142 are detachably connected to the pool wall of the inclined plate area 141. Figure 2 As shown, the detachable connection method is a slot connection. The vertical load of the inclined plate area 141 is 25-50m 3 / m2 / h; the inclined length of the inclined plate 142 is 1.5-3m.

[0081] More specifically, a reflux port 144 is provided at the bottom of the sludge zone 143, and the reflux port 144 is connected to the flocculation zone 120 for returning part of the sludge in the sedimentation zone 140 to the flocculation zone 120. A sludge discharge port 146 is also provided at the bottom of the sludge zone 143, and a sludge discharge pipe 147 is externally connected to the sludge discharge port 146 for discharging the settled sludge. A reflux pipe 145 is provided between the reflux port 144 and the flocculation zone 120 to connect them.

[0082] More specifically, a scraper lower part 148 and a sludge hopper inner part 149 are provided at the bottom of the sludge area 143; the scraper lower part 148 gradually protrudes from the pool wall of the sludge area 143 toward the center of the sludge area 143; the sludge hopper inner part 149 gradually shrinks along the gravity direction; the height of the scraper lower part 148 is higher than the height of the sludge hopper inner part 149; the reflux port 144 is located between the scraper lower part 148 and the sludge hopper inner part 149; the height of the sludge hopper inner part 149 is higher than the height of the sludge discharge port 146.

[0083] More specifically, the lateral flow inclined plate sedimentation device 1 further comprises a scraper 900, the scraper 900 comprising a scraper plate 910 and a third motor 920 for driving the scraper plate 910; the scraper plate 910 is located between the scraper lower portion 148 and the sludge hopper inner portion 149. The scraper 900 is configured as a suspended sludge thickener.

[0084] More specifically, the lateral flow inclined plate sedimentation device 1 also includes an instrument system and a control system; the instrument system includes an inlet flow meter, an inlet online turbidity meter and a pH meter, an outlet online turbidity meter, a sludge return flow meter and a residual sludge flow meter, a coagulant dosing flow meter, and a flocculant dosing flow meter; the control system automatically controls the first agitator 400 (generally industrial frequency), the second agitator 800 (generally variable frequency), the scraper 900 (generally industrial frequency), the sludge return pump (generally variable frequency) and the residual sludge pump (generally industrial frequency) as well as the dosing of coagulants and flocculants by collecting raw water volume and inlet and outlet SS data information. The instrument system and the control system are not shown in the drawings.

[0085] This embodiment also provides an application of the above-mentioned lateral flow inclined plate sedimentation device 1 as a primary lateral flow high-speed sedimentation tank for defluorination. Taking the treatment of 60m3 / h defluorination wastewater as an example, PAC and PAM agents are added respectively to form flocculation, and then the F- and SS are removed through the sedimentation of the sedimentation tank to ensure that the pollutants meet the standards. The key parameters of the lateral flow inclined plate sedimentation device 1 are as follows:

[0086] Design scale: Q = 60m 3 / h;

[0087] Main pool structure: carbon steel anti-corrosion;

[0088] Quantity: 1 seat;

[0089] Net size of single concrete zone 110: 1.1m×1.8m×5.0m, residence time: 10min;

[0090] Single flocculation zone 120 net size: 1.8m×1.8m×5.0m, residence time: 16.2min;

[0091] Surface load of inclined plate area 141: 10m 3 / m 2 / h;

[0092] Single seat footprint: 8.5m×4m×5m;

[0093] Fluoride removal 10% PAC dosage: 2000mg / L, PAM dosage: 3mg / L;

[0094] Main equipment and parameters: 43;

[0095]

Axial flow mechanical agitator

[0096] Equipment parameters: Quantity: 1 set;

[0097] Power: 1.1kW;

[0098] [Lifting axial flow agitator (variable frequency motor)]

[0099] Equipment parameters: Quantity: 1 set;

[0100] Power: 1.5kW;

[0101]

Directional tube 500

[0102] Equipment parameters: guide tube Contains guide plate, polymer dosing ring, etc., made of SS304 stainless steel;

[0103]

Central drive thickening scraper 900

[0104] Equipment parameters: Diameter: 3.0m;

[0105] Quantity: 1 set;

[0106] Power: 0.37kW;

[0107]

Return sludge pump (frequency conversion)

[0108] Equipment parameters: Flow rate: 5m3 / h;

[0109] Lift: 20m;

[0110] Power: 2.2kW;

[0111] Quantity: 2 units (one for use and one for backup);

[0112]

Excess sludge pump

[0113] Equipment parameters: Flow rate: 20m 3 / h;

[0114] Lift: 30m;

[0115] Power: 4kW;

[0116] Quantity: 2 units (one for use and one for backup);

[0117]

Inclined plate 142

[0118] Equipment parameters:

[0119] Spacing: 80mm;

[0120] Oblique length: 1.0m;

[0121] Material: PVC;

[0122] Quantity: 6m 2 .

[0123] The above content is a schematic description of the utility model and its implementation methods, which is not restrictive. What is shown in the embodiment is only one of the implementation methods of the utility model, and the actual implementation method is not limited thereto. Therefore, if ordinary technicians in this field are inspired by it and design implementation methods and embodiments similar to the technical solution without creative design without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. A lateral flow inclined plate sedimentation device, characterized in that: The lateral flow inclined plate sedimentation device comprises a tank body, which comprises a coagulation zone, a flocculation zone, a maturation zone, a sedimentation zone and a clear water zone arranged in sequence along the water flow direction; the sedimentation zone comprises an inclined plate zone and a sludge zone located below the inclined plate zone; The lateral flow inclined plate sedimentation device further comprises an inlet perforated flower wall and an outlet perforated flower wall; the inlet perforated flower wall is located between the maturation zone and the inclined plate zone and connects the maturation zone and the inclined plate zone; the outlet perforated flower wall is located between the inclined plate zone and the clean water zone and connects the inclined plate zone and the clean water zone; The direction from the water inlet perforated flower wall toward the water outlet perforated flower wall is defined as a first straight line direction; the first straight line direction is a horizontal direction.

2. The lateral flow inclined plate sedimentation device according to claim 1, characterized in that: The inclined plate area is provided with a plurality of parallel inclined plates; the angle between the inclined plates and the first straight line direction is 55-60°.

3. The lateral flow inclined plate sedimentation device according to claim 1, characterized in that: The inclined plate is removably connected to the pool wall in the inclined plate area.

4. The lateral flow inclined plate sedimentation device according to claim 3, characterized in that: The lateral flow inclined plate sedimentation device also includes a first agitator, which includes a first agitator blade and a first motor driving the first agitator blade. The first agitator blade is arranged in the coagulation zone and close to the bottom of the coagulation zone.

5. The lateral flow inclined plate sedimentation device according to claim 3, characterized in that: The lateral flow inclined plate sedimentation device also includes a guide tube located in the flocculation zone, and the guide tube is provided with a water inlet end and a water outlet end; the water inlet end is closer to the bottom of the flocculation zone than the water outlet end and is connected to the coagulation zone.

6. The lateral flow inclined plate sedimentation device according to claim 5, characterized in that: The lateral flow inclined plate sedimentation device also includes a dosing ring connected to the guide tube, which is used to add flocculants into the guide tube; the dosing ring is externally connected to a dosing pipe.

7. The lateral flow inclined plate sedimentation device according to claim 5, characterized in that: The lateral flow inclined plate sedimentation device also includes a second agitator, which includes a second agitator blade and a second motor driving the second agitator blade, and the second agitator blade is located in the guide tube.

8. The lateral flow inclined plate sedimentation device according to any one of claims 1 to 7, characterized in that: A reflux port is provided at the bottom of the sludge zone, and the reflux port is connected to the flocculation zone for returning part of the sludge in the sedimentation zone to the flocculation zone; a sludge discharge port is also provided at the bottom of the sludge zone, and the sludge discharge port is externally connected to a sludge discharge pipe for discharging the settled sludge.

9. The lateral flow inclined plate sedimentation device according to claim 8, characterized in that: The bottom of the sludge area is provided with a scraper lower part and a sludge hopper inner part; the scraper lower part gradually protrudes from the sludge area pool wall toward the center of the sludge area; the sludge hopper inner part gradually shrinks along the gravity direction; the height of the scraper lower part is higher than the height of the sludge hopper inner part; the reflux port is located between the scraper lower part and the sludge hopper inner part; the height of the sludge hopper inner part is higher than the height of the sludge discharge port.

10. The lateral flow inclined plate sedimentation device according to claim 9, characterized in that: The lateral flow inclined plate sedimentation device also includes a scraper, which includes a scraper plate and a third motor driving the scraper plate; the scraper plate is located between the lower part of the scraper and the inner part of the sludge hopper.

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