Reaction device for degrading new pollutants by sewage matrix reinforced peroxymonosulfate
By designing a reaction device containing waste iron shavings and using a submersible mixer to promote the peroxymonosulfate reaction to generate highly efficient active species, the problems of low degradation efficiency of new pollutants and secondary pollution in traditional devices were solved, and efficient, safe and low-cost sewage treatment was achieved.
Patent Information
- Application Number
- CN202422727741.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-08
- Publication Date
- 2025-09-09
- Estimated Expiration
- 2034-11-08
AI Technical Summary
When treating wastewater containing high concentrations of halide ions, the existing technology has low efficiency in degrading new pollutants and is prone to secondary pollution. In addition, the wastewater matrix is not fully utilized. Traditional reaction devices are expensive and require a large amount of reagents.
A reaction device for enhancing the degradation of new pollutants by peroxymonosulfate using sewage matrix was designed. Waste iron shavings were used as catalytic material. A submersible mixer was used to promote the reaction between sewage and peroxymonosulfate to generate highly efficient active species. Iron recycling was used to reduce the generation of iron sludge and achieve resource recycling.
It achieves efficient degradation of new pollutants with high and safe degradation efficiency, low cost, and is not prone to secondary pollution. Iron recycling reduces iron sludge generation and has high resource utilization.
Smart Images
Figure CN223316493U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of novel environmental protection equipment, and particularly relates to a reaction device for enhancing the degradation of new pollutants by peroxymonosulfate using a sewage matrix. Background Art
[0002] Emerging pollutants, including pharmaceuticals, personal care products, and endocrine disruptors, are widely present in wastewater. Advanced oxidation processes (AOPs) have been employed to degrade organic pollutants in wastewater (Lapworth et al., 2012; Anwesha et al., 2022). For example, ozone oxidation has low removal efficiency for 2,4,6-trichlorophenol in wastewater containing high chloride ion concentrations (Xu et al., 2022). CoFe2O4 nanoparticle-activated permonosulfate can effectively degrade fluoroquinolone antibiotics in wastewater, but the presence of chloride ions negatively affects the removal of norfloxacin (Xu et al., 2023). While sodium tetraborate was introduced into the thermally activated permonosulfate process to enhance the removal of organic pollutants, chloride ions significantly inhibited the degradation of acetaminophen (Li et al., 2022). Therefore, the removal of emerging pollutants from wastewater containing high halide ion concentrations using traditional AOPs is particularly challenging. Furthermore, less consideration has been given to separating the added catalytic materials from the wastewater and reducing secondary pollution.
[0003] Traditional reaction devices used to remove organic pollutants have problems such as large dosage of reagents, high cost, insufficient utilization of wastewater matrices (such as chloride ions, bromide ions, and trace divalent iron), low efficiency in degrading new pollutants, and easy generation of secondary pollution. Summary of the Invention
[0004] In response to the problems of the existing technology, the purpose of the utility model is to provide an easy-to-operate sewage matrix enhanced peroxymonosulfate degradation of new pollutants reaction device, the device is safe, low-cost, fully utilizes the sewage matrix, has high new pollutant degradation efficiency, and is not prone to secondary pollution.
[0005] The technical solutions of the present utility model are specifically as follows.
[0006] The utility model provides a sewage matrix enhanced peroxymonosulfate degradation of new pollutants reaction device, which includes a box
[0007] Grid frame and submersible mixer; the box body is divided into a reaction zone and a sedimentation zone, a water hole is set between the reaction zone and the sedimentation zone, and a lifting gate is set at the bottom of the water hole; a supporting platform is set around the lower part of the reaction zone, and the grid frame is installed in the reaction zone through the supporting platform. The inside of the grid frame is filled with scrap iron shavings, and the submersible mixer is set below the grid frame. A water inlet and a drug feeding port are respectively set on the side wall near the bottom of the reaction zone; a water outlet is set on the side wall near the bottom of the sedimentation zone, the lower part of the sedimentation zone is a conical structure, and a mud discharge port is set at the bottom.
[0008] In the utility model, four supporting columns are installed at the bottom of the box.
[0009] In the utility model, there are two submersible mixers.
[0010] In the utility model, the box body is a cylinder or a rectangular parallelepiped, the grid frame is a cylinder or a rectangular parallelepiped, and the waste iron shavings are in a curled shape.
[0011] In the utility model, the top cover is movably arranged on the top of the box body, so as to facilitate regular addition and replacement of waste iron shavings in the grid frame.
[0012] Compared with the existing technology, the beneficial effects of the utility model are: the device of the utility model is easy to operate, safe, low-cost, fully utilizes the sewage matrix, has a high efficiency in degrading new pollutants, and is not prone to secondary pollution; waste iron shavings are arranged in the reaction device to realize iron circulation, so that almost no iron sludge is produced in the sewage treatment system, thereby improving the degradation efficiency of new pollutants and realizing resource recycling. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a top view of the reaction device of the present invention.
[0014] Figure 2 This is the front view of the reaction device of the present invention.
[0015] Figure 3 It is a left view of the reaction device of the present invention.
[0016] Numbers in the figure: 1-box; 2-water inlet; 3-drug feeding port; 4-water outlet; 5-mud discharge port; 6-submersible mixer; 7-scrap iron shavings; 8-removable top cover; 9-support platform; 10-support column; 11-grid frame; 12-water hole; 13-lift gate. DETAILED DESCRIPTION
[0017] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments.
[0018] Example 1
[0019] In the embodiment, a reaction device for enhancing the degradation of new pollutants by peroxymonosulfate with a sewage matrix is provided. The reaction device for removing new pollutants comprises a box 1 and a grid frame 11. The box is cylindrical or rectangular, and the material of the box 1 is quartz glass or stainless steel. Four support columns 10 are installed at the bottom of the box 1, and the box 1 is divided into a reaction zone and a precipitation zone. A grid frame 11 is installed in the reaction zone. The grid frame 11 is cylindrical or rectangular, and the material of the grid frame 11 is quartz glass or stainless steel. Support platforms 9 are provided around the lower part of the reaction zone for supporting the grid frame 11. Waste iron shavings 7 are placed inside the grid frame 11. The iron shavings The addition of iron shavings is to form an iron cycle and produce less trivalent iron (iron mud), while the use of waste iron shavings 7 can achieve resource utilization; a removable top cover 8 is set on the top of the reaction zone to facilitate the regular addition and replacement of iron shavings in the grid frame; a water inlet 2 is set at the lower left part of one side of the reaction zone, and a dosing port 3 is set at the lower right part of one side of the reaction zone; a submersible mixer 6 is installed at the bottom of the reaction zone; a water outlet 4 is set at the lower left part of one side of the sedimentation zone, the lower part of the sedimentation zone is a conical structure, and a mud discharge port 5 is set at the bottom; a water hole 12 is set between the reaction zone and the sedimentation zone, and a lifting gate 13 is set at the bottom of the water hole 12, and the lifting gate 13 is located in the sedimentation zone.
[0020] In a specific embodiment, the box 1 is made of stainless steel and has a volume of 3 m 3 , of which the reaction zone is 1.5 m 3 , sedimentation area 1.5 m 3 ; Scrap iron shavings 7 are placed inside the grid frame 11 of the reaction zone. The scrap iron shavings 7 are about 50 mm long, about 20 mm wide, and curly in shape; the reaction time of the reaction zone is 0.1 h to 0.5 h; the sedimentation time of the sedimentation zone is 0.5 h to 1.0 h, the sludge discharge time is 0.1 h to 0.5 h, and the sludge discharge cycle is 10 d to 30 d.
[0021] In this embodiment, peroxymonosulfate is added to the dosing port 3. Under the action of the submerged mixer 6, the trace amount of divalent iron and halide ions in the sewage are fully contacted with the peroxymonosulfate and the waste iron shavings 7, and the SO4 -• , •OH, HClO and HBrO and other active species are in full contact with new pollutants.
[0022] When the reaction device in this embodiment is used to degrade new pollutants, a time controller is used to automatically control the water inlet, drug addition, stirring, water outlet, and mud discharge of the reaction device. The specific operation method is as follows:
[0023] Open the water inlet valve, and water enters the reaction zone through the water inlet 2. When the liquid level in the box 1 submerges the grid frame 11, close the water inlet valve; open the dosing valve of the peroxymonosulfate solution, and the peroxymonosulfate solution enters the reaction zone through the dosing port 3. When the required dosage is reached, close the dosing valve; turn on the submersible mixer 6 to ensure that the sewage is in full contact with the reagent. The trace divalent iron and halide ions coexisting in the sewage strengthen the peroxymonosulfate, and the reaction produces SO4 -• , •OH, HClO, and HBrO, which oxidize and degrade new pollutants in the wastewater. During the stirring process, scrap iron shavings 7 inside grid frame 11 react with the trivalent iron produced in the system to produce divalent iron, with virtually no iron sludge produced. After the reaction is complete, the lift gate 13 is opened, allowing the wastewater from the reaction zone to flow into the sedimentation zone. After sedimentation, the outlet valve is opened to discharge the supernatant from outlet 4. The sludge valve is periodically opened to discharge a very small amount of iron sludge from outlet 5. Scrap iron shavings 7 are placed inside grid frame 11. When adding or replacing scrap iron shavings, the removable top cover 8 is opened, grid frame 11 is removed, scrap iron shavings 7 are added or replaced, and then grid frame 11 is placed back in. The removable top cover 8 is closed. Samples are taken at inlet 2 and outlet 4 to measure the concentration of new pollutants and calculate their degradation rate. In practical applications, the speed of the submersible mixer, water inlet flow, reaction time, sedimentation time, and sludge discharge cycle can be adjusted according to the concentration of new pollutants, trace divalent iron, chloride ions, and bromide ions in the sewage, so as to achieve the optimal degradation rate of new pollutants, energy consumption, and cost.
Claims
1. A reaction device for enhancing the degradation of new pollutants by peroxymonosulfate using a sewage matrix, characterized by: It includes a box body, a grid frame and a submersible mixer; the box body is divided into a reaction zone and a sedimentation zone, a water hole is arranged between the reaction zone and the sedimentation zone, and a lifting gate is arranged at the bottom of the water hole; a supporting platform is arranged around the lower part of the reaction zone, the grid frame is installed in the reaction zone through the supporting platform, the inside of the grid frame is filled with scrap iron shavings, the submersible mixer is arranged below the grid frame, and a water inlet and a drug feeding port are respectively arranged on the side wall near the bottom of the reaction zone; a water outlet is arranged on the side wall near the bottom of the sedimentation zone, the lower part of the sedimentation zone is a conical structure, and a mud discharge port is arranged at the bottom.
2. The sewage substrate-enhanced peroxymonosulfate degradation reaction device according to claim 1 is characterized in that: Four supporting columns are installed at the bottom of the box.
3. The sewage substrate-enhanced peroxymonosulfate degradation reaction device according to claim 1 is characterized in that: There are two submersible mixers.
4. The reaction device for enhancing the degradation of new pollutants by peroxymonosulfate using sewage substrate according to claim 1, characterized in that: The box body is cylindrical or rectangular, the grid frame is cylindrical or rectangular, and the waste iron shavings are in a curly shape.
5. The reaction device for enhancing the degradation of new pollutants by peroxymonosulfate using sewage substrate according to claim 1, characterized in that: The top cover is movably arranged on the top of the box body to facilitate regular addition and replacement of waste iron shavings in the grid frame.