A novel coal chemical water reuse treatment device

Abstract

The utility model discloses a novel coal chemical industry water reuse treatment device, its characterized in that, including solid -liquid separation equipment, sedimentation tank, tubular ultrafiltration membrane group, clear water pool, the sedimentation tank includes pool body, and the pool body is divided into first settlement chamber, second settlement chamber, third settlement chamber in portion, and first settlement chamber is communicated with second settlement chamber through high -lying first overflow port, and second settlement chamber is communicated with third settlement chamber through low -lying second overflow port, and each overflow port place all fixed mounting has filter plate, the liquid outflow end of solid -liquid separation equipment is communicated with the first settlement chamber of sedimentation tank, and the third settlement chamber of sedimentation tank is communicated with the liquid inflow end of tubular ultrafiltration membrane group through second water pump, the clean water outflow end of tubular ultrafiltration membrane group is communicated with clear water pool, and its sewage outflow end is communicated with the first settlement chamber of sedimentation tank through second pipeline, has simple structure, practicality is strong, can continuous operation, and wastewater treatment capacity is big, wastewater treatment effect is better and so on technical features.

Description

Technical Field

[0001] This utility model relates to a water reuse treatment device, and more specifically, to a novel water reuse treatment device in coal chemical industry, belonging to the field of petrochemical-coal chemical wastewater treatment. Background Technology

[0002] Coal chemical wastewater reuse refers to the process of treating industrial wastewater to meet certain water quality standards through a series of water treatment technologies during coal chemical production, and then reusing it for production or non-drinking purposes.

[0003] The current device uses a first filter plate to perform preliminary filtration of coal chemical wastewater, filtering out coal sludge. An electrically operated telescopic rod moves a scraper to remove the sludge from the first filter plate, eliminating the need for manual sludge handling and reducing labor intensity. The pre-filtered water is then carried downwards by gravity and guided directly into a sedimentation tank through an outlet funnel. An electric motor rotates a support rod, which in turn rotates a stirring rod, causing the incoming water to react rapidly with the flocculant, forming sediment. A second filter plate then filters this sediment, further reducing impurities in the wastewater and minimizing environmental pollution. While this existing technology can effectively treat wastewater from coal chemical processes, it has certain limitations in practical implementation.

[0004] The existing technology adopts a box-type structure and purifies wastewater through filtration. This technology has simple specifications and a small wastewater treatment capacity; its purification effect on wastewater is relatively poor. Utility Model Content

[0005] In order to solve the above-mentioned problems in the prior art, this utility model provides a new type of coal chemical wastewater reuse treatment device with the technical characteristics of simple structure, strong practicality, continuous operation, large wastewater treatment capacity and better wastewater treatment effect.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0007] A novel coal chemical wastewater reuse treatment device includes a solid-liquid separation unit, a sedimentation tank, a tubular ultrafiltration membrane module, and a clear water tank. The liquid outlet of the solid-liquid separation unit is connected to the liquid inlet of the sedimentation tank, the liquid outlet of the sedimentation tank is connected to the liquid inlet of the tubular ultrafiltration membrane module, the purified water outlet of the tubular ultrafiltration membrane module is connected to the inlet of the clear water tank, and the wastewater outlet of the tubular ultrafiltration membrane module is connected to the liquid inlet of the sedimentation tank. The sedimentation tank is constructed of brick or concrete, and its interior comprises a first sedimentation chamber, a second sedimentation chamber, and a third sedimentation chamber. Multiple first overflow ports and multiple second overflow ports are provided in the upper part of the sedimentation tank. The first sedimentation chamber is connected to the second sedimentation chamber through each first overflow port, and the second sedimentation chamber is connected to the third sedimentation chamber through each second overflow port. The height of the first overflow ports is higher than that of the second overflow ports.

[0008] Optionally, filter plates are fixedly installed on the sedimentation tank body and at each of the first overflow ports and each of the second overflow ports.

[0009] Optionally, the solid-liquid separation device includes a tank, a quick-opening blind flange, and a collection drawer. The quick-opening blind flange is detachably installed at one end of the tank. The collection drawer is placed on the inner bottom wall of the tank. A sinking pipe is fixedly installed on the top wall of the tank near the quick-opening blind flange. The sinking pipe penetrates the top wall of the tank. An inflow pipe is fixedly installed at the upper end of the sinking pipe, and the two are connected. The lower end of the sinking pipe is connected to the inside of the tank. The lower end port of the sinking pipe is located above the collection drawer.

[0010] Optionally, a plurality of coalescing packings are fixedly installed on the inner top wall of the tank, and a drain pipe is fixedly installed on the inner bottom wall of the end of the tank away from the quick-opening blind flange. The drain pipe penetrates the bottom wall of the tank, and the height of the inflow end of the drain pipe is higher than or equal to the height of the upper surface of the storage drawer.

[0011] Optionally, it also includes a first water pump and a second water pump, wherein the liquid inlet end of the first water pump is fixedly installed and connected to the outlet end of the drain pipe; a first pipe is fixedly installed at the liquid outlet end of the first water pump and connected to it, wherein the end of the first pipe away from the first water pump is connected to the first settling chamber of the settling tank.

[0012] Optionally, the inflow end of the second water pump is connected to the third settling chamber of the settling tank, and the outflow end of the second water pump is fixedly installed with a third pipe and the two are connected; the tubular ultrafiltration membrane module includes a plurality of tubular ultrafiltration membranes arranged in sequence, and the third pipe is fixedly installed with the liquid inflow end of each tubular ultrafiltration membrane in sequence, and the third pipe is connected to each tubular ultrafiltration membrane.

[0013] Optionally, a second pipe is fixedly installed at the wastewater outlet end of each tubular ultrafiltration membrane, and the wastewater outlet end of each tubular ultrafiltration membrane is connected to the second pipe; the wastewater outlet end of the second pipe is connected to the first sedimentation chamber of the sedimentation tank.

[0014] Optionally, a fourth pipe is fixedly installed at the purified water outlet of each tubular ultrafiltration membrane, and the purified water outlet of each tubular ultrafiltration membrane is connected to the fourth pipe; the purified water outlet of the fourth pipe is connected to the clear water tank.

[0015] Beneficial Effects: This invention, through the coordinated arrangement of solid-liquid separation equipment, a sedimentation tank, a tubular ultrafiltration membrane module, and a clear water tank, enables the treatment device to achieve large-capacity and highly efficient wastewater purification. The solid-liquid separation equipment performs initial solid-liquid separation on coal chemical wastewater, retaining solid matter within the equipment. The separated wastewater is then discharged into the sedimentation tank, where three sedimentation chambers further facilitate tertiary sedimentation, removing solid particles from the water. Subsequently, the tubular ultrafiltration membrane module performs ultrafiltration, removing some COD, BOD, and most turbidity, colloids, large particles, bacteria, and viruses. Compared to existing technologies, this device can operate continuously, has a large wastewater treatment capacity, and offers superior wastewater treatment results. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the connection structure of a novel coal chemical wastewater reuse treatment device according to this utility model;

[0018] Figure 2 This is a cross-sectional structural schematic diagram of the solid-liquid separation equipment in a novel coal chemical wastewater reuse treatment device according to this utility model.

[0019] Figure 3 This is a three-dimensional structural diagram of the sedimentation tank in a novel coal chemical wastewater reuse treatment device according to this utility model.

[0020] Figure 4 This is a schematic diagram of the connection structure of the tubular ultrafiltration membrane module in a novel coal chemical wastewater reuse treatment device according to this utility model.

[0021] In the diagram: 1. Solid-liquid separation equipment; 101. Submerged pipe; 102. Coalescing packing; 103. Accumulation drawer; 104. Tank body; 105. Quick-opening blind flange; 106. Drain pipe; 107. Sleeper; 2. Settling tank; 201. Tank body; 202. First settling chamber; 203. Second settling chamber; 204. Third settling chamber; 205. First overflow port; 206. Second overflow port; 3. Tubular ultrafiltration membrane module; 301. Tubular ultrafiltration membrane; 4. Clear water tank; 5. First water pump; 6. Second water pump; 7. First pipeline; 8. Second pipeline; 9. Third pipeline; 10. Fourth pipeline; 11. Incoming flow pipeline. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] The technical solution of this utility model will now be clearly and completely described in conjunction with the accompanying drawings. In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying anything.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "setting," "connection," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] like Figures 1-4The illustration shows a specific embodiment of a novel coal chemical wastewater reuse treatment device. This embodiment includes a solid-liquid separation unit 1, a sedimentation tank 2, a tubular ultrafiltration membrane module 3, and a clear water tank 4. The sedimentation tank 2 includes a tank body 201, which is internally divided into a first sedimentation chamber 202, a second sedimentation chamber 203, and a third sedimentation chamber 204. The first sedimentation chamber 202 is connected to the second sedimentation chamber 203 through a high-level first overflow port 205. The second sedimentation chamber 203... The second overflow port 206 at a low position is connected to the third settling chamber 204, and a filter plate is fixedly installed at each overflow port; the liquid outlet of the solid-liquid separation device 1 is connected to the first settling chamber 202 of the settling tank 2, the third settling chamber 204 of the settling tank 2 is connected to the liquid inlet of the tubular ultrafiltration membrane module 3 through the second water pump 6, the clean water outlet of the tubular ultrafiltration membrane module 3 is connected to the clear water tank 4, and its sewage outlet is connected to the first settling chamber 202 of the settling tank 2 through the second pipe 8.

[0026] The technical solution / principle / process of this application includes: a solid-liquid separation device 1, a sedimentation tank 2, a tubular ultrafiltration membrane module 3, and a clear water tank 4. Wastewater flows sequentially through the solid-liquid separation device 1, sedimentation tank 2, tubular ultrafiltration membrane module 3, and clear water tank 4. 。

[0027] Among them, the solid-liquid separation equipment 1: the tank body 104 is equipped with coalescing packing 102 and a sedimentation drawer 103. Wastewater is introduced through the sink pipe 101 to separate solid impurities and oily substances. The wastewater is pumped into the sedimentation tank 2 by the first water pump 5 through the drain pipe 106.

[0028] Three-stage sedimentation tank 2: The first sedimentation chamber 202 → the second sedimentation chamber 203 → the third sedimentation chamber 204 overflow in stages. The first overflow port 205 at the high position and the second overflow port 206 at the low position form a gradient sedimentation, and the filter plate enhances particle interception.

[0029] Tubular ultrafiltration membrane module 3: The second water pump 6 pumps the wastewater from the third settling chamber 204 into the parallel tubular ultrafiltration membrane 301, the purified water flows into the clear water tank 4, and the concentrate flows back to the first settling chamber 202 for secondary treatment through the second pipeline 8.

[0030] Solid-liquid separation equipment 1 is used for solid-liquid separation of coal chemical wastewater to remove solid impurities from the water. Sedimentation tank 2 is used to remove particulate matter from the wastewater through sedimentation. Tubular ultrafiltration membrane module 3 is used to remove some COD, BOD, and most turbidity, colloids, large particulate matter, bacteria, and viruses from the wastewater through ultrafiltration. Clear water tank 4 is used to hold the purified water.

[0031] The liquid outlet of the solid-liquid separation device 1 is connected to the liquid inlet of the sedimentation tank 2. The liquid outlet of the sedimentation tank 2 is connected to the liquid inlet of the tubular ultrafiltration membrane module 3. The purified water outlet of the tubular ultrafiltration membrane module 3 is connected to the inlet of the clear water tank 4. The wastewater outlet of the tubular ultrafiltration membrane module 3 is connected to the liquid inlet of the sedimentation tank 2.

[0032] Specifically, the first settling chamber 202, the second settling chamber 203, and the third settling chamber 204 of the settling tank 2 are all used to settle solid particles in the wastewater. Through a three-stage settling process, the solid particles in the wastewater are separated from the water body. Wastewater first flows into the first settling chamber 202, then flows into the second settling chamber 203 through the first overflow outlets 205, and the wastewater in the second settling chamber 203 flows into the third settling chamber 204 through the second overflow outlets 206. In practice, depending on actual needs, coagulants (such as aluminum sulfate, ferrous sulfate, ferric chloride, and polyaluminum chloride) can be added to the first settling chamber 202 (or the second settling chamber 203 and the third settling chamber 204) to disrupt the stability of colloids in the wastewater, causing them to flocculate; coagulant aids (such as water glass and lime, used to accelerate the coagulation process); and activated carbon (used to adsorb organic matter in the wastewater and improve water quality). By installing a filter plate at the first overflow port 205 or the second overflow port 206, the particulate matter in the wastewater can be filtered out, thereby enhancing the wastewater purification effect.

[0033] In a preferred embodiment, the solid-liquid separation device 1 includes a tank 104, with a submerged pipe 101 at the top connecting to the incoming flow pipe 11, a drain pipe 106 at the bottom, a quick-opening blind flange 105 detachably installed at one end of the tank 104, a collection drawer 103 located on the inner bottom wall of the tank 104 for collecting solid debris, and coalescing packing 102 fixed to the inner top wall of the tank 104 for oil-water separation.

[0034] Specifically: The solid-liquid separation device 1 includes a tank 104, a quick-opening blind flange 105, and a storage drawer 103. The quick-opening blind flange 105 is detachably installed at one end of the tank 104. The storage drawer 103 is placed on the inner bottom wall of the tank 104. A sinking pipe 101 is fixedly installed on the top wall of the end of the tank 104 near the quick-opening blind flange 105. The sinking pipe 101 penetrates the top wall of the tank 104. An inflow pipe 11 is fixedly installed at the upper end of the sinking pipe 101 and the two are connected. The lower end of the sinking pipe 101 is connected to the inside of the tank 104. The lower end port of the sinking pipe 101 is located above the storage drawer 103. Multiple coalescing packings 102 are fixedly installed on the inner top wall of the tank body 104. A drain pipe 106 is fixedly installed on the inner bottom wall of the end of the tank body 104 away from the quick-opening blind flange 105. The drain pipe 106 penetrates the bottom wall of the tank body 104, and the height of the inflow end of the drain pipe 106 is higher than or equal to the height of the upper surface of the storage drawer 103. Multiple sleepers 107 are fixedly installed below the tank body 104, and each sleeper 107 is used to support and fix the tank body 104.

[0035] Tank 104 is used to hold coal chemical wastewater. The wastewater flows into the sink pipe 101 through the inlet pipe 11, and the wastewater and solid debris within it flow into the accumulation drawer 103, which holds the solid debris. The coalescing packing 102 includes, but is not limited to, hydrophilic and oleophobic packing, and is used for oil-water separation in the wastewater. Drain pipe 106 is used to drain the wastewater from tank 104. A quick-opening blind flange 105 has sealing gaskets installed around its four edges, allowing personnel to enter tank 104 and clean the solid debris from the accumulation drawer 103 after opening the blind flange 105.

[0036] In a preferred embodiment, the height of the inflow end of the drain pipe 106 is greater than or equal to the height of the upper surface of the storage drawer 103, and the tank 104 is connected to the first settling chamber 202 via the first water pump 5 and the first pipe 7.

[0037] Specifically: The liquid inlet end of the first water pump 5 is fixedly installed and connected to the outlet end of the drain pipe 106. A first pipe 7 is fixedly installed and connected to the liquid outlet end of the first water pump 5, and the end of the first pipe 7 away from the first water pump 5 is connected to the first settling chamber 202 of the settling tank 2. The first water pump 5 is used to extract wastewater from the tank 104 and transport the wastewater through the first pipe 7 into the first settling chamber 202 of the settling tank 2. The inlet end of the second water pump 6 is connected to the third settling chamber 204 of the settling tank 2, and a third pipe 9 is fixedly installed and connected to the outlet end of the second water pump 6. The tubular ultrafiltration membrane module 3 includes multiple tubular ultrafiltration membranes 301 arranged in sequence, and the third pipe 9 is fixedly installed and connected to the liquid inlet end of each tubular ultrafiltration membrane 301 in sequence. Each tubular ultrafiltration membrane 301 has a second pipe 8 fixedly installed at its wastewater outlet end, and the wastewater outlet end of each tubular ultrafiltration membrane 301 is connected to the second pipe 8. The wastewater outlet end of the second pipe 8 is connected to the first settling chamber 202 of the settling tank 2. Each tubular ultrafiltration membrane 301 has a fourth pipe 10 fixedly installed at its purified water outlet end, and the purified water outlet end of each tubular ultrafiltration membrane 301 is connected to the fourth pipe 10. The purified water outlet end of the fourth pipe 10 is connected to the clear water tank 4.

[0038] The second water pump 6 is used to draw wastewater from the third settling chamber 204 of the settling tank 2 and inject the wastewater into each tubular ultrafiltration membrane 301 of the tubular ultrafiltration membrane module 3 through the third pipe 9. The tubular ultrafiltration membrane 301 is used to ultrafiltration the wastewater, removing part of the COD, BOD, and most of the turbidity, colloids, large particulate matter, bacteria, and viruses. The water purified by the tubular ultrafiltration membrane 301 is discharged into the clear water tank 4 through the fourth pipe 10. The concentrated liquid produced by the tubular ultrafiltration membrane 301 is discharged into the first settling chamber 202 of the settling tank 2 through the second pipe 8, allowing the concentrated liquid to be recycled.

[0039] In a preferred embodiment, the tubular ultrafiltration membrane module 3 includes multiple tubular ultrafiltration membranes 301. The liquid inflow ends of each tubular ultrafiltration membrane 301 are connected in parallel through a third pipe 9, and the purified water outflow ends are connected into the clear water tank 4 through a fourth pipe 10. The second pipe 8 connects the wastewater outflow ends of each tubular ultrafiltration membrane 301 in series and returns the wastewater to the first settling chamber 202.

[0040] Specifically: The third pipe 9 is fixedly installed at the liquid inflow end of each tubular ultrafiltration membrane 301, and is connected to each tubular ultrafiltration membrane 301. A second pipe 8 is fixedly installed at the wastewater outflow end of each tubular ultrafiltration membrane 301, and is connected to the second pipe 8. The wastewater outflow end of the second pipe 8 is connected to the first settling chamber 202 of the settling tank 2.

[0041] In a preferred embodiment, the sedimentation tank 2 body 201 is made of brick or concrete, and the aperture of the filter plate at the first overflow port 205 is smaller than the aperture of the filter plate at the second overflow port 206.

[0042] Specifically: The sedimentation tank 2, 201, is constructed of brick or concrete. The interior of the sedimentation tank 2 comprises a first sedimentation chamber 202, a second sedimentation chamber 203, and a third sedimentation chamber 204. Multiple first overflow ports 205 and multiple second overflow ports 206 are located in the upper part of the sedimentation tank 2, 201. The first sedimentation chamber 202 is connected to the second sedimentation chamber 203 via the first overflow ports 205, and the second sedimentation chamber 203 is connected to the third sedimentation chamber 204 via the second overflow ports 206. The height of the first overflow ports 205 is higher than that of the second overflow ports 206. Filter plates are fixedly installed on the sedimentation tank 2, 201, at each first overflow port 205 and each second overflow port 206.

[0043] The settling tank 2 consists of three chambers: the first settling chamber 202, the second settling chamber 203, and the third settling chamber 204. These chambers are used to settle solid particles in the wastewater, allowing them to separate from the water body through a three-stage settling process. Wastewater first flows into the first settling chamber 202, then flows through the first overflow outlets 205 into the second settling chamber 203. Wastewater from the second settling chamber 203 then flows through the second overflow outlets 206 into the third settling chamber 204. In practice, depending on actual needs, coagulants such as aluminum sulfate, ferrous sulfate, ferric chloride, and polyaluminum chloride can be added to the first settling chamber 202 (or the second settling chamber 203 and the third settling chamber 204) to disrupt the stability of colloids in the wastewater, causing them to flocculate; coagulant aids (such as water glass and lime, used to accelerate the coagulation process); and activated carbon (used to adsorb organic matter in the wastewater and improve water quality). By installing a filter plate at the first overflow port 205 or the second overflow port 206, the particulate matter in the wastewater can be filtered out, thereby enhancing the wastewater purification effect.

[0044] Finally, it should be noted that this utility model is not limited to the above embodiments, and many variations are possible. All variations that can be directly derived or conceived by those skilled in the art from the disclosure of this utility model should be considered within the protection scope of this utility model.

Claims

1. A novel coal chemical wastewater reuse treatment device, characterized in that, The system includes a solid-liquid separation device (1), a sedimentation tank (2), a tubular ultrafiltration membrane module (3), and a clear water tank (4). The sedimentation tank (2) includes a tank body (201), which is internally divided into a first sedimentation chamber (202), a second sedimentation chamber (203), and a third sedimentation chamber (204). The first sedimentation chamber (202) is connected to the second sedimentation chamber (203) through a high-level first overflow port (205), and the second sedimentation chamber (203) is connected to the third sedimentation chamber (204) through a low-level second overflow port (206). 04) Connected, each overflow port is fixedly installed with a filter plate; the liquid outlet of the solid-liquid separation device (1) is connected to the first sedimentation chamber (202) of the sedimentation tank (2), the third sedimentation chamber (204) of the sedimentation tank (2) is connected to the liquid inlet of the tubular ultrafiltration membrane group (3) through the second water pump (6), the clean water outlet of the tubular ultrafiltration membrane group (3) is connected to the clear water tank (4), and its sewage outlet is connected to the first sedimentation chamber (202) of the sedimentation tank (2) through the second pipe (8).

2. The novel coal chemical wastewater reuse treatment device according to claim 1, characterized in that, The solid-liquid separation device (1) includes a tank (104), with a sink pipe (101) at the top connecting to the incoming flow pipe (11), a drain pipe (106) at the bottom, a quick-opening blind flange (105) detachably installed at one end of the tank (104), a collection drawer (103) located on the inner bottom wall of the tank (104) for collecting solid debris, and coalescing packing (102) fixed on the inner top wall of the tank (104) for oil-water separation.

3. The novel coal chemical wastewater reuse treatment device according to claim 2, characterized in that, The height of the inflow end of the drain pipe (106) is greater than or equal to the height of the upper surface of the storage drawer (103), and the tank (104) is connected to the first settling chamber (202) via the first water pump (5) and the first pipe (7).

4. A novel coal chemical wastewater reuse treatment device according to claim 1, characterized in that, The tubular ultrafiltration membrane module (3) includes multiple tubular ultrafiltration membranes (301). The liquid inflow end of each tubular ultrafiltration membrane (301) is connected in parallel through a third pipe (9), and the purified water outflow end flows into the clear water pool (4) through a fourth pipe (10).

5. A novel coal chemical wastewater reuse treatment device according to claim 4, characterized in that, The second pipe (8) connects the wastewater outlet ends of each tubular ultrafiltration membrane (301) in series and returns the wastewater to the first settling chamber (202).

6. A novel coal chemical wastewater reuse treatment device according to claim 1, characterized in that, The sedimentation tank (2) has a tank body (201) made of brick or concrete, and the aperture of the filter plate at the first overflow port (205) is smaller than the aperture of the filter plate at the second overflow port (206).

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