Coal-containing wastewater clarifier
Patent Information
- Application Number
- CN202522200338.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-17
- Publication Date
- 2026-09-22
- Estimated Expiration
- 2035-10-17
AI Technical Summary
[0006]本实用新型的目的在于提供一种含煤废水澄清池，以在解决煤泥浸没含煤废水提升泵这一技术问题的前提下，同时解决污染严重的初期含煤雨水由于来不及处理而直接溢流至外环境而造成环境污染的问题
本实用新型的一种含煤废水澄清池通过在含煤废水沉淀池与澄清煤水池之间设置溢流墙，使得含煤废水经过沉淀之后通过溢流墙进入到设置有含煤废水提升泵的澄清煤水池内，可以避免煤泥浸没含煤废水提升泵；同时，通过在溢流墙内自下至上设置多个通水孔，在运行过程中，经过沉淀后的含煤废水会根据水位变化从不同高度的通水孔流入澄清煤水池内，避免含煤废水沉淀池内始终处于满水溢流状态导致的下雨情况下，污染严重的初期含煤雨水由于来不及处理而直接溢流至外环境造成的环境污染问题，可以有效提升含煤废水澄清池周遭的环境质量。
Smart Images
Figure CN224777481U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of water supply and drainage technology, and more specifically, it relates to a coal-containing wastewater clarification tank. Background Technology
[0002] Currently, thermal power plants generate a large amount of coal-containing wastewater during operation, mainly from dust removal and washing water in the coal conveying system, and coal-containing rainwater from the coal yard. Coal-containing wastewater treatment is an indispensable part of the production process, directly related to environmental protection and sustainable development.
[0003] Coal-containing wastewater is collected and pretreated in a coal clarification tank for sedimentation. After sedimentation, it is pumped to a subsequent treatment system for further processing and reuse. The traditional layout and process is: coal-containing wastewater inlet ditch from the coal yard → coal-containing wastewater clarification tank → coal-containing wastewater pump → coal-containing wastewater treatment equipment → reuse. In conventional coal-containing wastewater clarification tanks, the pump is a submersible pump installed at the bottom of the clarification tank at the outlet. However, based on actual power plant operation, this design results in the coal sludge settling and submerging the pump.
[0004] In view of the above problems, the layout and process have been improved as follows: Coal-containing wastewater inlet ditch from the coal yard --- Coal-containing wastewater sedimentation tank --- Clarified coal water tank --- Coal-containing wastewater lift pump --- Coal-containing wastewater treatment equipment --- Reuse. A partition wall is installed between the coal-containing wastewater sedimentation tank and the clarified coal water tank, and the coal water overflows from the coal-containing wastewater sedimentation tank through the top of the partition wall into the clarified coal water tank.
[0005] In this way, although the improved solution can solve the problem of the coal slime submerging the coal-containing wastewater booster pump, the coal-containing wastewater sedimentation tank will always be full of water. In the event of rain, the heavily polluted initial coal-containing rainwater will overflow directly into the external environment because it cannot be treated in time, causing environmental pollution. Utility Model Content
[0006] The purpose of this utility model is to provide a coal-containing wastewater clarification tank, which solves the technical problem of the coal slime immersion in the coal-containing wastewater lift pump, and at the same time solves the problem of the serious initial coal-containing rainwater overflowing directly into the external environment and causing environmental pollution due to insufficient treatment.
[0007] To achieve the above objectives, this utility model provides a coal-containing wastewater clarification tank, comprising: Coal-containing wastewater sedimentation tank, used to collect and store coal-containing wastewater; A coal clarification pool is connected to the outlet end of the coal-containing wastewater sedimentation pool. An overflow wall connects the coal-containing wastewater sedimentation tank and the clarified coal water tank; the overflow wall has multiple water passages running from bottom to top, each water passage having two ends connected to the coal-containing wastewater sedimentation tank and the clarified coal water tank, respectively; and, A coal-containing wastewater booster pump is installed at the bottom of the coal clarification pool, and its outlet is connected to the coal-containing wastewater treatment equipment through an outlet pipe.
[0008] Furthermore, the plurality of water passage holes are spaced apart along the length of the overflow wall.
[0009] Furthermore, the bottom elevation of the clarified coal water pool is lower than the bottom elevation of the coal-containing wastewater sedimentation pool.
[0010] Furthermore, the inlet end of the coal-containing wastewater sedimentation tank is connected to the coal-containing wastewater inlet ditch.
[0011] Furthermore, a water pipe is embedded in each of the aforementioned water passages.
[0012] Furthermore, the coal-containing wastewater lifting pump is a submersible sewage lifting pump.
[0013] Compared with the prior art, the present invention has the following technical effects: This utility model discloses a coal-containing wastewater clarification tank. By installing an overflow wall between the coal-containing wastewater sedimentation tank and the coal-water clarification tank, the coal-containing wastewater, after sedimentation, flows through the overflow wall into the coal-water clarification tank equipped with a coal-containing wastewater lift pump. This avoids the coal sludge from submerging the coal-containing wastewater lift pump. Simultaneously, by installing multiple water passages from bottom to top within the overflow wall, during operation, the settled coal-containing wastewater flows into the coal-water clarification tank through water passages at different heights according to water level changes. This prevents the coal-containing wastewater sedimentation tank from being constantly overflowing, which could lead to severe initial coal-containing rainwater pollution during rainfall and overflow into the external environment due to insufficient treatment. This effectively improves the environmental quality around the coal-containing wastewater clarification tank. Attached Figure Description
[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model, 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 some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0015] Figure 1 A top view of a coal-containing wastewater clarification tank provided for an embodiment of this utility model; Figure 2 for Figure 1Schematic diagram of the cross-sectional structure at point AA; Figure 3 This is a front view structural diagram of an overflow wall provided for an embodiment of the present utility model.
[0016] The following are the labeling elements in the figure: 1. Coal-containing wastewater inlet ditch; 2. Coal-containing wastewater sedimentation tank; 3. Clarified coal water tank; 4. Coal-containing wastewater booster pump; 5. Outlet pipe; 6. Overflow wall; 7. Water passage hole. Detailed Implementation
[0017] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0018] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.
[0019] It should be understood that the terms "length", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and 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. Therefore, they should not be construed as limitations on this utility model.
[0020] The terminology used in the embodiments of this utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The singular forms “a,” “the,” and “the” as used in the embodiments of this utility model and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.
[0021] Please see Figures 1-3 The present invention will now describe a coal-containing wastewater clarification tank according to an embodiment of the present invention. In the figure, the arrows indicate the flow direction of the coal-containing wastewater.
[0022] In one embodiment of this utility model, a coal-containing wastewater clarification tank includes: a coal-containing wastewater sedimentation tank 2, a coal-clarified water tank 3, an overflow wall 6, and a coal-containing wastewater lift pump 4. The coal-containing wastewater sedimentation tank 2 is used to collect and store coal-containing wastewater; the coal-clarified water tank 3 is connected to the outlet end of the coal-containing wastewater sedimentation tank 2; the overflow wall 6 connects the coal-containing wastewater sedimentation tank 2 and the coal-clarified water tank 3; the overflow wall 6 has multiple water passages 7 arranged from bottom to top, with each water passage 7 connected at both ends to the coal-containing wastewater sedimentation tank 2 and the coal-clarified water tank 3 respectively; the coal-containing wastewater lift pump 4 is located at the bottom of the coal-clarified water tank 3, and its outlet is connected to coal-containing wastewater treatment equipment through an outlet pipe 5.
[0023] An embodiment of this utility model describes the operation of a coal-containing wastewater clarification tank as follows: During the operation of a thermal power plant, a large amount of coal-containing wastewater flows into a coal-containing wastewater sedimentation tank 2. After sedimentation in the sedimentation tank 2, the wastewater flows through an overflow wall 6 into a coal-containing wastewater clarification tank 3. The clarification tank 3 stores coal-containing wastewater with a lower coal content after sedimentation. The coal-containing wastewater in the clarification tank 3 is then pumped to the ground by a coal-containing wastewater lift pump 4 and flows through an outlet pipe 5 into subsequent coal-containing wastewater treatment equipment.
[0024] Since the coal-containing wastewater entering the clarification coal water tank 3 has been treated by sedimentation in the coal-containing wastewater sedimentation tank 2, most of the coal sludge is collected at the bottom of the coal-containing wastewater sedimentation tank 2 after sedimentation, and the clearer coal-containing wastewater in the upper layer enters the clarification coal water tank 3 through the overflow wall 6. This avoids the problem of a large amount of settled coal sludge submerging the coal-containing wastewater lift pump caused by directly setting the coal-containing wastewater lift pump 4 in the coal-containing wastewater sedimentation tank 2 in the traditional method.
[0025] On the other hand, since multiple water passages 7 are set in the overflow wall 6 from bottom to top, during operation, during the rainless period, the coal-containing wastewater after sedimentation will flow into the coal clarification tank 3 from the water passages 7 at different heights in the overflow wall 6 according to the water level change. Finally, it will be lifted by the coal-containing wastewater lift pump 4 and sent to the coal-containing wastewater treatment equipment through the outlet pipe 5 for treatment and reuse. This allows the coal-containing wastewater in the coal-containing wastewater sedimentation tank 2 to be discharged through the water passages 7 at different heights in the overflow wall 6 during the rainless period. When it rains, the heavily polluted initial coal-containing rainwater will be stored in the coal-containing wastewater sedimentation tank 2 for subsequent treatment. This avoids the environmental pollution caused by the heavily polluted initial coal-containing rainwater overflowing into the external environment due to the coal-containing wastewater sedimentation tank 2 being in a full overflow state during rain. This can effectively improve the environmental quality around the coal-containing wastewater clarification tank.
[0026] Overall, the coal-containing wastewater clarification tank of this utility model embodiment, by setting an overflow wall 6 between the coal-containing wastewater sedimentation tank 2 and the coal-water clarification tank 3, allows the coal-containing wastewater to enter the coal-water clarification tank 3, which is equipped with a coal-containing wastewater lift pump 4, after sedimentation. This avoids the coal sludge from submerging the coal-containing wastewater lift pump 4. At the same time, by setting multiple water passages 7 from bottom to top in the overflow wall 6, during operation, the coal-containing wastewater after sedimentation will flow into the coal-water clarification tank 3 from water passages 7 at different heights according to water level changes. This avoids the environmental pollution problem caused by the coal-containing wastewater sedimentation tank 2 being in a full overflow state, which would result in the initial coal-containing rainwater being unable to be treated in time and directly overflowing into the external environment during rain. This can effectively improve the environmental quality around the coal-containing wastewater clarification tank.
[0027] Furthermore, in one embodiment, a plurality of water passage holes 7 are spaced apart along the length of the overflow wall 6, such as... Figure 3 As shown. The multiple water passages 7 are initially spaced apart from bottom to top, and secondly, they are also spaced apart from left to right. In this embodiment, the length direction of the overflow wall 6 refers to... Figure 3 From left to right, the overflow wall 6 has multiple layers of water passage holes 7, distributed along the height from the bottom of the pool to the top of the wall. Each layer of water passage holes 7 may contain multiple holes spaced apart along the length of the overflow wall. That is, the overflow wall 6 has water passage holes 7 arranged through the wall at certain intervals and elevations. Compared to arranging multiple water passage holes 7 from bottom to top in the same vertical plane, this embodiment arranges multiple water passage holes 7 spaced apart along the length of the overflow wall 6. On the one hand, this disperses the multiple water passage holes 7 within the overflow wall, avoiding the decrease in wall load-bearing capacity caused by concentrated arrangement of water passage holes 7, improving the overall structural stability of the overflow wall 6, and extending its service life. On the other hand, multiple water passage holes 7 can be spaced apart within the overflow wall 6 at the same height to more quickly discharge the coal-containing wastewater in the coal-containing wastewater sedimentation tank 2 into the clarified coal water tank 3. At least one water passage hole 7 is arranged within the overflow wall 6 at the same height. Figure 3 In the middle, 11 water passage holes 7 are arranged at equal intervals from left to right in the overflow wall 6 at the same height.
[0028] Furthermore, in one embodiment, the bottom elevation of the coal clarification tank 3 is lower than the bottom elevation of the coal-containing wastewater sedimentation tank 2, such as... Figure 2 As shown. By setting the bottom elevation of the coal clarification tank 3 to be lower, the coal-containing wastewater in the upper layer of the coal-containing wastewater sedimentation tank 2 can flow more fully into the coal clarification tank 3, thereby more effectively pumping out a larger amount of coal-containing wastewater after sedimentation in the coal-containing wastewater sedimentation tank 2 through the coal-containing wastewater lift pump 4.
[0029] Furthermore, in one embodiment, the inlet of the coal-containing wastewater sedimentation tank 2 is connected to the coal-containing wastewater inlet ditch 1. That is, during the operation of the thermal power plant, a large amount of coal-containing wastewater flows into the coal-containing wastewater sedimentation tank 2 through the coal-containing wastewater inlet ditch 1, where it is collected and stored for subsequent treatment. The coal-containing wastewater inlet ditch 1 can be located at the middle of the inlet of the coal-containing wastewater sedimentation tank 2, such as... Figure 1 , Figure 2 As shown. In addition, an inlet pipe can be buried in the coal-containing wastewater inlet ditch 1, through which the coal-containing wastewater flows into the coal-containing wastewater sedimentation tank 2.
[0030] Furthermore, in one embodiment, a water pipe is embedded in each water passage hole 7. The water passage hole 7 can be a circular hole or a square hole, and correspondingly, the water pipe can be a circular pipe or a square pipe, and the material of the water pipe can be plastic or stainless steel. The water passage hole 7 can be a hole pre-reserved when constructing the overflow wall 6, or it can be a perforation drilled on the wall surface after the overflow wall 6 is constructed.
[0031] Furthermore, in one embodiment, the coal-containing wastewater lift pump 4 is a submersible sewage lift pump, i.e., a submersible sewage pump. Submersible sewage pumps are more suitable for low-lying areas and underground projects in thermal power plants, and can directly pump coal-containing wastewater to the surface.
[0032] The coal-containing wastewater inlet ditch 1, coal-containing wastewater sedimentation tank 2, coal-water clarification tank 3, overflow wall 6, and water passage hole 7 of this utility model embodiment can all be completed through simple construction. Moreover, the installation of the coal-containing wastewater lift pump 4, outlet pipe 5, and water passage pipe is simple and convenient. It has the advantages of simple and convenient overall installation and construction. The coal-containing wastewater clarification tank of this utility model embodiment has practical significance in ensuring the safe and economical operation of the coal-containing wastewater treatment system.
[0033] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.
Claims
1. A coal-containing wastewater clarification tank, characterized in that, include: Coal-containing wastewater sedimentation tank, used to collect and store coal-containing wastewater; A coal clarification pool is connected to the outlet end of the coal-containing wastewater sedimentation pool. An overflow wall connects the coal-containing wastewater sedimentation tank and the clarified coal water tank; the overflow wall has multiple water passages running from bottom to top, each water passage connecting its two ends to the coal-containing wastewater sedimentation tank and the clarified coal water tank, respectively; and, A coal-containing wastewater booster pump is installed at the bottom of the coal clarification pool, and its outlet is connected to the coal-containing wastewater treatment equipment through an outlet pipe.
2. The coal-containing wastewater clarification tank as described in claim 1, characterized in that, The plurality of water passage holes are spaced apart along the length of the overflow wall.
3. The coal-containing wastewater clarification tank as described in claim 1, characterized in that, The bottom elevation of the clarified coal water pool is lower than the bottom elevation of the coal-containing wastewater sedimentation pool.
4. A coal-containing wastewater clarification tank as described in any one of claims 1-3, characterized in that, The inlet of the coal-containing wastewater sedimentation tank is connected to the coal-containing wastewater inlet ditch.
5. A coal-containing wastewater clarification tank as described in claim 4, characterized in that, A water pipe is embedded in each of the aforementioned water holes.
6. The coal-containing wastewater clarification tank as described in claim 4, characterized in that, The coal-containing wastewater lifting pump is a submersible sewage lifting pump.