Comprehensive tank body for steam stripping, Fenton oxidation, coagulation and sedimentation of industrial wastewater
By designing a side-by-side mixing tank and sedimentation tank, the balanced mixing of agents and sewage is achieved, which solves the problems of unbalanced mixing of agents and inconvenient maintenance, reduces operating costs, and improves the efficiency of industrial wastewater purification.
Patent Information
- Application Number
- CN202423112017.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-17
- Publication Date
- 2025-08-26
- Estimated Expiration
- 2034-12-17
AI Technical Summary
The existing Fenton oxidized coagulation precipitation has unbalanced mixing of the agents in sewage treatment, inconvenient maintenance, high operating costs, and difficult to effectively degrade difficult-to-degrade organic matter in complex industrial wastewater.
A comprehensive pool body including a first mixing pool, a second mixing pool, a third mixing pool and a sedimentation pool arranged side by side is designed. The mixing pipe and dosing pipe are used to achieve balanced mixing of agents and sewage, reduce intermediate equipment, set up manholes and equipment holes for maintenance, reduce operating costs by using self-flow method, and clean sludge through the sludge discharge pipe.
It improves the utilization rate of the agent, reduces the operating costs of the system, realizes efficient purification of industrial wastewater, simplifies the equipment maintenance process, and reduces the content of impurities such as COD and suspended substances.
Smart Images
Figure CN223268514U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of sewage treatment, in particular to a comprehensive tank body for industrial wastewater stripping, mixing, Fenton oxidation, coagulation and sedimentation. Background Art
[0002] In recent years, with the improvement of sewage discharge standards, there have been problems such as increased equipment costs, improved process routes, and high operating costs. The raw water components of industrial park sewage and domestic municipal mixed sewage are relatively complex, and the content of difficult-to-degrade organic matter is relatively high. At present, Fenton oxidation coagulation and sedimentation have been widely used in sewage treatment, which provides a guarantee for the stable compliance of effluent CODCr and suspended solids. However, in actual use, the existing Fenton oxidation coagulation and sedimentation has uneven reagent mixing, inconvenient maintenance, and high on-site operating costs. In response to the above problems, it is necessary to propose a comprehensive tank for industrial wastewater stripping and mixing Fenton oxidation coagulation and sedimentation with high reagent utilization, easy maintenance, reduced intermediate equipment, and thorough water purification. Utility Model Content
[0003] The technical problem to be solved by the utility model is to provide a comprehensive tank body for industrial wastewater stripping, mixing, Fenton oxidation, coagulation and sedimentation, which has high reagent utilization rate, is easy to repair, reduces intermediate equipment and can thoroughly purify water.
[0004] In order to solve the above problems, the technical solution adopted by the present invention is:
[0005] A comprehensive tank for industrial wastewater stripping, mixing, Fenton oxidation, coagulation and sedimentation, comprising a first mixing tank, a second mixing tank, and a third mixing tank arranged side by side, and a sedimentation tank arranged on one side of the three mixing tanks. Mixing pipes with upper and lower openings are vertically arranged in each of the three mixing tanks, and the middle of the mixing pipes is connected to a gas pipeline and a dosing pipeline. The sedimentation tank is provided with a central cylinder in the middle, a mud hopper at the bottom, and a water outlet weir on the upper inner wall. A water outlet area is formed between the water outlet weir and the inner wall of the sedimentation tank, and a water outlet connected to the water outlet area is provided on the side wall of the sedimentation tank.
[0006] The first mixing tank is provided with a water inlet, and flow holes are provided between the first mixing tank and the second mixing tank, and between the second mixing tank and the third mixing tank. The third mixing tank is connected to the central tube through a flow conduit;
[0007] The bottom of the mud hopper is connected to the outside world through a mud discharge pipe, and a sludge pump is provided on the mud discharge pipe.
[0008] As an embodiment of the present invention, a dosing pipe is provided in the first mixing tank for adding acid solution, two dosing pipes are provided in the second mixing tank, respectively for adding hydrogen peroxide and ferrous sulfate, and a dosing pipe is provided in the third mixing tank for adding alkali solution.
[0009] As an embodiment of the present invention, the gas pipeline is provided with an upward elbow after extending into the mixing pipe, so as to promote the mixing of the reagent and sewage and promote the flow of water.
[0010] As an embodiment of the present utility model, the flow hole between the first mixing pool and the second mixing pool is arranged at the lower part of the pool body, and the flow hole between the second mixing pool and the third mixing pool is arranged at the upper part of the pool body. The lower end of the flow conduit is located at the lower part of the third mixing pool, and the upper end is connected to the middle part of the central tube.
[0011] As an implementation mode of the present invention, the lower end of the flow conduit is provided with an inclined section for increasing the water flow area.
[0012] As an embodiment of the present invention, the lower end of the mixing tube is 500 mm higher than the bottom of the mixing tank body, and the upper end is 500 mm lower than the liquid level.
[0013] As an implementation mode of the present utility model, the mud discharge pipe is provided with a bell mouth with an opening facing downward at the mud bucket, and the bell mouth is 200 mm higher than the bottom of the mixing tank body.
[0014] As an implementation manner of the present utility model, the top of the central tube is 300 mm higher than the water outlet weir.
[0015] As an embodiment of the present utility model, the mixing tube is fixed to the fixed bracket by a fiberglass sleeve and bolts, the fixed bracket is fixed to the inner wall of the mixing tank, multiple fixed brackets are arranged along the up and down directions, and the fixed brackets are staggered along the front and back directions and left and right directions of the mixing tank; the center tube is fixed to the fixed bracket by a fiberglass sleeve and bolts, and the fixed bracket is fixed to the top of the sedimentation tank.
[0016] As an embodiment of the present invention, manholes are provided on the tops of the first mixing tank, the second mixing tank and the third mixing tank, and an equipment hole is provided on the top of the sedimentation tank.
[0017] The beneficial effects of adopting the above technical solution are:
[0018] The utility model provides a comprehensive tank body for industrial wastewater stripping, mixing, Fenton oxidation, coagulation and sedimentation, which increases the utilization rate of the internal space of the mixing tank by utilizing the stripping mixing method, increases the balance of the wastewater and reagent mixing reaction by utilizing the mixing tube, reduces the intermediate equipment by the gravity flow method, reduces the system operation cost, and the multiple mixing tanks effectively reduce the COD, colloid, suspended matter and other impurities inside the system. The equipment is convenient for maintenance by arranging manholes, equipment holes and ladders, collects sludge through a mud hopper, and sucks the sludge through a mud discharge pipe, which is convenient for sludge cleaning. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a top sectional schematic diagram of the present utility model.
[0020] Figure 2 yes Figure 1 Schematic diagram of the cross-sectional structure at AA in the middle.
[0021] Figure 3 It is a main sectional schematic diagram of the present utility model.
[0022] Figure 4 yes Figure 3 Schematic diagram of the cross-sectional structure at BB in the middle.
[0023] Figure 5 yes Figure 3 Schematic diagram of the cross-sectional structure at CC in the middle.
[0024] Figure 6 It is a structural schematic diagram of the mixing pipe, gas pipeline and dosing pipeline in the utility model.
[0025] Figure 7 It is a structural schematic diagram of the mud discharge pipe in the utility model.
[0026] Among them: A-first mixing tank; B-second mixing tank; C-third mixing tank; D-sedimentation tank; E-outlet area; F-mud hopper; G-outlet weir;
[0027] 1-water inlet; 2-gas pipeline; 201-elbow; 3-dosing pipeline; 4-mixing tube; 5-manhole; 6-flow hole; 7-flow duct; 701-oblique section; 8-center tube; 9-mud discharge pipe; 10-water outlet; 11-equipment hole; 12-glass fiber reinforced plastic ferrule; 13-fixing bracket; 14-bell mouth; 15-insertion hole. DETAILED DESCRIPTION
[0028] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is described clearly and completely below in conjunction with specific embodiments.
[0029] like Figure 1-Figure 5 The shown embodiment is a comprehensive tank body for industrial wastewater stripping, mixing, Fenton oxidation, coagulation and sedimentation, which includes a first mixing tank A, a second mixing tank B, a third mixing tank C arranged side by side, and a sedimentation tank D arranged on one side of the three mixing tanks. A mixing tube 4 with upper and lower openings is vertically arranged in each of the three mixing tanks, and the middle part of the mixing tube 4 is connected to the gas pipeline 2 and the dosing pipeline 3. A central tube 8 is provided in the middle of the sedimentation tank D, a mud hopper F is provided at the bottom, and an outlet weir G is provided on the upper inner wall. An outlet area E is formed between the outlet weir G and the inner wall of the sedimentation tank D, and an outlet 10 connected to the outlet area E is provided on the side wall of the sedimentation tank D; a valve is provided on the gas pipeline 2, and the mixing effect is controlled by controlling the valve opening.
[0030] The first mixing pool A is provided with a water inlet 1, which is located on the side wall or top of the first mixing pool A in the form of a reserved sleeve. A flow hole 6 is provided between the first mixing pool A and the second mixing pool B, and between the second mixing pool B and the third mixing pool C. The third mixing pool C is connected to the central tube 8 through a flow conduit 7.
[0031] The bottom of the mud hopper F is connected to the outside world through a mud discharge pipe 9, and a mud pump is provided on the mud discharge pipe 9. Figure 4 As shown, the mud hopper F adopts a multi-point and multi-directional design, and is arranged in a rectangular array at the bottom of the sedimentation tank D, increasing sludge storage and reducing the problem of insufficient space utilization. As a further optimization, a mud hopper F and a mud discharge pipe 9 are also provided in the mixing tank.
[0032] The utility model provides a comprehensive tank body for industrial wastewater stripping, mixing, Fenton oxidation, coagulation and sedimentation, which increases the utilization rate of the internal space of the mixing tank by utilizing the stripping mixing method, increases the balance of the wastewater and reagent mixing reaction by utilizing the mixing tube, reduces the intermediate equipment by the gravity flow method, reduces the system operation cost, and the multiple mixing tanks effectively reduce the COD, colloid, suspended matter and other impurities inside the system. The equipment is convenient for maintenance by arranging manholes, equipment holes and ladders, collects sludge through a mud hopper, and sucks the sludge through a mud discharge pipe, which is convenient for sludge cleaning.
[0033] In this embodiment, a dosing pipe 3 is provided in the first mixing tank A for adding acid solution, two dosing pipes 3 are provided in the second mixing tank B for adding hydrogen peroxide and ferrous sulfate respectively, and a dosing pipe is provided in the third mixing tank C for adding alkali solution.
[0034] like Figure 6 As shown, the gas pipeline 2 is provided with an upward elbow 201 after extending into the mixing pipe 4 to promote the mixing of the reagent and sewage and promote the flow of water.
[0035] like Figure 2 As shown, the flow hole 6 between the first mixing pool A and the second mixing pool B is set at the lower part of the pool body, and the flow hole 6 between the second mixing pool B and the third mixing pool C is set at the upper part of the pool body. The lower end of the flow conduit 7 is located at the lower part of the third mixing pool C, and the upper end is connected to the middle part of the central tube 8. Figure 3 As shown, the lower end of the flow conduit 7 is provided with an inclined section 701 to increase the water flow area. The lower end of the mixing pipe 4 is 500mm higher than the bottom of the mixing tank body, and the upper end is 500mm lower than the liquid level. The top of the central tube 8 is 300mm higher than the water outlet weir G to prevent backflow.
[0036] like Figure 3 and Figure 7As shown, the mud discharge pipe 9 is provided with a bell mouth 14 with an opening facing downward at the mud bucket F to increase the suction area. The bell mouth 14 is 200 mm higher than the bottom of the mixing tank body to prevent the pipeline from being blocked.
[0037] like Figure 3 and Figure 5 As shown, the mixing tube 4 is fixed to a fixing bracket 13 via a fiberglass sleeve 12 and bolts. The fixing bracket 13 is fixed to the inner wall of the mixing tank. Embedded parts corresponding to the fixing bracket 13 are pre-buried on the inner wall of the mixing tank. Multiple fixing brackets 13 are provided along the vertical direction, and the fixing brackets 13 are staggered along the front-to-back direction and the left-to-right direction of the mixing tank. The center tube 8 is fixed to the fixing bracket 13 via a fiberglass sleeve 12 and bolts. The fixing bracket 13 is fixed to the top of the sedimentation tank D. The fixing bracket 13 is made of S30408 material.
[0038] The tops of the first mixing tank A, the second mixing tank B and the third mixing tank C are all provided with manholes 5 and ladders, and the top of the sedimentation tank D is provided with equipment holes 11 and ladders for easy inspection and maintenance.
[0039] The outlet weir G, which surrounds the upper portion of the sedimentation tank D, features a serrated weir plate. The number of weir openings is determined by the flow rate. The weir plate is made of 3mm stainless steel or 8mm UPVC. A 5mm thick rubber pad is laid the same length as the weir plate. Expansion bolts secure the weir plate and the thick rubber pad to the weir body every 600mm.
[0040] Specific working process:
[0041] The sewage is transported to the first mixing tank A through the water inlet 1 under the action of the lifting pump. After entering the first mixing tank A, the water flows upward from the bottom of the mixing tube 4 driven by the gas introduced by the gas pipe 2, and at the same time mixes and reacts with the acid added by the dosing pipe 3. Then, it flows out from the upper end of the mixing tube 4, mixes with the water outside the mixing tube 4, and flows from the flow hole 6 at the bottom of the first mixing tank A to the second mixing tank B.
[0042] After the sewage flows into the second mixing tank B, it flows upward from the bottom of the mixing pipe 4, reacting with hydrogen peroxide and ferrous sulfate. The highly oxidizing hydroxyl radicals cause the long chains of organic matter in the water to oxidize, decompose, and break, breaking down large molecules into small molecules, improving their biodegradability. Finally, the organic matter can be non-selectively oxidized into CO2, H2O, or mineral salts, thereby effectively reducing COD and color. After being mixed in the mixing pipe, it flows from the flow hole 6 at the top of the second mixing tank B to the third mixing tank C.
[0043] The third mixing tank C is fed with water from the top, and liquid alkali is added to the mixing pipe 4 to increase the pH value. The water flows upward from the bottom of the mixing pipe 4, mixes with the liquid alkali, and then flows out from the top of the mixing pipe 4. It mixes with the water outside the mixing pipe 4 to promote sedimentation. Finally, it flows through the overflow pipe 7 at the bottom of the third mixing tank C to the central tube 8 of the sedimentation tank D.
[0044] After the sewage enters the central tube 8, it settles and the sludge enters the sludge hopper F. The sludge is sucked out of the sedimentation tank D through the sludge discharge pipe 9 and the sludge pump; the clear liquid flows into the outlet area E through the weir plate of the outlet weir G and flows out along the outlet 10.
[0045] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims
1. A comprehensive tank for industrial wastewater stripping, mixed Fenton oxidation, coagulation and sedimentation, characterized by: It includes a first mixing tank, a second mixing tank, and a third mixing tank arranged side by side, and a sedimentation tank arranged on one side of the three mixing tanks. Mixing pipes with upper and lower openings are vertically arranged in the three mixing tanks, and the middle of the mixing pipes is connected to the gas pipeline and the dosing pipeline. The sedimentation tank is provided with a central cylinder in the middle, a mud hopper at the bottom, and a water outlet weir on the upper inner wall. A water outlet area is formed between the water outlet weir and the inner wall of the sedimentation tank, and a water outlet connected to the water outlet area is provided on the side wall of the sedimentation tank. The first mixing tank is provided with a water inlet, and flow holes are provided between the first mixing tank and the second mixing tank, and between the second mixing tank and the third mixing tank. The third mixing tank is connected to the central tube through a flow conduit; The bottom of the mud hopper is connected to the outside world through a mud discharge pipe, and a sludge pump is provided on the mud discharge pipe.
2. The integrated tank for industrial wastewater stripping, mixed Fenton oxidation, coagulation and sedimentation according to claim 1, characterized in that: The first mixing tank is provided with a dosing pipe for adding acid solution, the second mixing tank is provided with two dosing pipes for adding hydrogen peroxide and ferrous sulfate respectively, and the third mixing tank is provided with a dosing pipe for adding alkali solution.
3. The integrated tank for industrial wastewater stripping, mixed Fenton oxidation, coagulation and sedimentation according to claim 1, characterized in that: After the gas pipeline extends into the mixing pipe, an upward elbow is provided to promote the mixing of the reagent and sewage and promote the flow of water.
4. The integrated tank for industrial wastewater stripping, mixing, Fenton oxidation, coagulation and sedimentation according to claim 1, characterized in that: The flow hole between the first mixing pool and the second mixing pool is set at the lower part of the pool body, and the flow hole between the second mixing pool and the third mixing pool is set at the upper part of the pool body. The lower end of the flow conduit is located at the lower part of the third mixing pool, and the upper end is connected to the middle part of the central tube.
5. The integrated tank for industrial wastewater stripping, mixed Fenton oxidation, coagulation and sedimentation according to claim 4, characterized in that: The lower end of the flow conduit is provided with an inclined section for increasing the water flow area.
6. The integrated tank for industrial wastewater stripping, mixed Fenton oxidation, coagulation and sedimentation according to claim 1, characterized in that: The lower end of the mixing pipe is 500 mm higher than the bottom of the mixing tank body, and the upper end is 500 mm lower than the liquid level.
7. The integrated tank for industrial wastewater stripping, mixed Fenton oxidation, coagulation and sedimentation according to claim 1, characterized in that: The mud discharge pipe is provided with a bell mouth opening downward at the mud hopper, and the bell mouth is 200 mm higher than the bottom of the mixing tank body.
8. The integrated tank for industrial wastewater stripping, mixed Fenton oxidation, coagulation and sedimentation according to claim 1, characterized in that: The top of the central tube is 300mm higher than the outlet weir G.
9. The integrated tank for industrial wastewater stripping, mixed Fenton oxidation, coagulation and sedimentation according to claim 1, characterized in that: The mixing tube is fixed to the fixed bracket by means of a fiberglass sleeve and bolts, and the fixed bracket is fixed to the inner wall of the mixing tank. A plurality of the fixed brackets are arranged along the up and down directions, and the fixed brackets are staggered along the front and back directions and the left and right directions of the mixing tank; the center tube is fixed to the fixed bracket by means of a fiberglass sleeve and bolts, and the fixed bracket is fixed to the top of the sedimentation tank.
10. The integrated tank for industrial wastewater stripping, mixed Fenton oxidation, coagulation and sedimentation according to claim 1, characterized in that: The tops of the first mixing tank, the second mixing tank and the third mixing tank are all provided with manholes, and the top of the sedimentation tank is provided with equipment holes.