Device for enriching and purifying organic pollutants in tail water

Abstract

The utility model relates to the technical field of water treatment, and provides an enrichment and purification device for organic pollutants in tail water, the enrichment and purification device comprises an activated carbon filter tank, a first enrichment device and a second enrichment device which are communicated in sequence, and a trace organic matter online detector is arranged in the activated carbon filter tank; a water outlet of the first enrichment device is connected with a water inlet of the second enrichment device through a first valve and a second valve which are connected in series, so that tail water with the concentration lower than a first threshold value detected by the trace organic matter online detector flows to the second enrichment device from the first enrichment device; a water outlet of the first enrichment device is connected with a water outlet of the second enrichment device through a first valve and a third valve which are connected in series, so that tail water with the concentration detected by the trace organic matter online detector and higher than a second threshold value flows from the first enrichment device to the second enrichment device. The problem that high-content antibiotic tail water is not completely enriched is solved, and the problems that low-content antibiotic tail water is repeatedly enriched, and the enrichment cost is increased are solved.

Description

Technical Field

[0001] This application relates to the field of water treatment technology, specifically to a device for enriching and purifying organic pollutants in effluent. Background Technology

[0002] Antibiotics, as a new type of organic pollutant, have become a global environmental pollution problem. In pond aquaculture, to increase production and pursue economic benefits, intensive farming models with high stocking densities and high feed inputs are commonly adopted. However, the soil and water pollution caused by aquaculture wastewater is becoming increasingly prominent, a critical issue that the aquaculture industry urgently needs to address. Therefore, antibiotic enrichment treatment is generally required before wastewater discharge to reduce environmental pollution. The concentration of antibiotic pollutants in pond wastewater varies depending on the season, different aquaculture needs, the amount of antibiotics added, and factors such as the discharge time, flow rate, and water quality.

[0003] However, existing wastewater enrichment technologies mostly use a single enrichment type, which is difficult to adapt to wastewater of different concentrations. The enrichment effect may be reduced for high-concentration antibiotic wastewater, while low-concentration wastewater may result in repeated enrichment, increasing costs. Utility Model Content

[0004] To help solve the above-mentioned technical problems, this application provides a device for enriching and purifying organic pollutants in effluent, which adopts the following technical solution:

[0005] An organic pollutant enrichment and purification device for effluent, comprising an activated carbon filter, a first enrichment device, and a second enrichment device connected in sequence, wherein the activated carbon filter is equipped with an online trace organic matter detector.

[0006] The outlet of the first enrichment device and the inlet of the second enrichment device are connected in series via a first valve and a second valve, so that the effluent with a concentration lower than the first threshold detected by the trace organic matter online detector flows from the first enrichment device to the second enrichment device.

[0007] The outlets of the first enrichment device and the second enrichment device are connected in series via a first valve and a third valve, so that the effluent with a concentration higher than the second threshold detected by the online trace organic matter detector flows from the first enrichment device to the second enrichment device.

[0008] Preferably, the inlets of the first enrichment device and the second enrichment device are located on the upper side wall, and the outlets of the first enrichment device and the second enrichment device are located at the bottom. The first enrichment device and the second enrichment device are provided with adsorbent material, which is located between the inlet and the outlet, and is made of PUF polyurethane material and / or XAD-2 resin.

[0009] Preferably, the enrichment and purification device further includes, in sequence:

[0010] An equalization tank is provided, which is equipped with a mechanical screen for preliminary filtration of the wastewater;

[0011] A flocculation tank, wherein a coagulant and a coagulant aid are provided in the flocculation tank;

[0012] An inclined tube sedimentation tank includes an inclined plate sedimentation tank and a first water collection tank. The inlet of the inclined plate sedimentation tank is connected to the outlet of the flocculation tank, and the outlet of the inclined plate sedimentation tank is connected to the inlet of the first water collection tank.

[0013] Preferably, the inclined plate sedimentation tank has an inlet on the lower side wall and an outlet on the upper side wall. A first water collection pipe is provided at the outlet, which connects the inclined plate sedimentation tank and the first water collection tank. A transverse inclined plate is provided inside the inclined plate sedimentation tank, and the transverse inclined plate is located between the inlet and outlet of the inclined plate sedimentation tank.

[0014] Preferably, the activated carbon filter includes a second water collection tank, an activated filter area, and an instrument monitoring area connected in sequence. The outlet of the first water collection tank is connected to the inlet of the second water collection tank. The outlet of the second water collection tank is connected to the inlet on the upper side wall of the activated filter area through a perforated water distribution pipe. The outlet on the lower side wall of the activated filter area is connected to the instrument monitoring area through a second water collection pipe.

[0015] In summary, this application utilizes an online monitoring device for trace organic matter in pond effluent filtered by activated carbon filters. Based on the varying concentrations of antibiotic organic matter in the effluent, a three-way valve is used to switch the enrichment path of the pond effluent. This flexible approach solves the problems associated with existing single-method enrichment methods. It addresses the issue of incomplete enrichment of effluent with high antibiotic content while avoiding repeated enrichment of effluent with low antibiotic content, which increases enrichment costs. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of an embodiment of an organic pollutant enrichment and purification device for wastewater according to this application;

[0017] Figure 2 for Figure 1 The schematic diagram of the regulating tank in the embodiment shown is as follows;

[0018] Figure 3 for Figure 1 The diagram shows the structure of the flocculation tank in the embodiment shown.

[0019] Figure 4 for Figure 1The schematic diagram of the inclined tube sedimentation tank in the embodiment shown is as follows;

[0020] Figure 5 for Figure 1 The diagram shows the structure of the activated carbon filter in the embodiment shown.

[0021] Figure 6 for Figure 1 A schematic diagram of the enrichment device in the illustrated embodiment.

[0022] Figure reference numerals: 1-Equalization tank; 2-Flocculation tank; 3-Inclined tube sedimentation tank; 31-Inclined plate sedimentation tank; 32-First water collection tank; 4-Activated carbon filter; 41-Second water collection tank; 42-Activated filter area; 43-Instrument monitoring area; 5-First enrichment device; 6-Second enrichment device; 7-First valve; 8-Second valve; 9-Third valve; 10-Mechanical bar; 11-First water collection pipe; 12-Inclined tube; 13-Perforated water distribution pipe; 14-Activated carbon layer; 15-Second water collection pipe; 16-Trace organic matter online detector; 17-Adsorption material. Detailed Implementation

[0023] The present application will be further described below with reference to the accompanying drawings. The structure and principle of the present application are very clear to those skilled in the art. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

[0024] Figure 1 This is a schematic diagram of one embodiment of an organic pollutant enrichment and purification device for wastewater according to this application. Figure 2 for Figure 1 The schematic diagram of the regulating tank in the embodiment shown is as follows. Figure 3 for Figure 1 The schematic diagram of the flocculation tank in the embodiment shown is as follows. Figure 4 for Figure 1 The schematic diagram of the inclined tube sedimentation tank in the embodiment shown is as follows. Figure 5 for Figure 1 The schematic diagram of the activated carbon filter in the embodiment shown is as follows. Figure 6 for Figure 1 A schematic diagram of the enrichment device in the illustrated embodiment.

[0025] Combination Figures 1 to 6It is understood that the enrichment and purification device of this application may include an equalization tank 1, a flocculation tank 2, an inclined tube sedimentation tank 3, an activated carbon filter 4, a first enrichment device 5, and a second enrichment device 6 connected in sequence. The activated carbon filter 4 is equipped with an online trace organic matter detector 16. The outlet of the first enrichment device 5 and the inlet of the second enrichment device 6 are connected in series via a first valve 7 and a second valve 8, so that the effluent with a concentration lower than a first threshold detected by the online trace organic matter detector 16 flows from the first enrichment device 5 to the second enrichment device 6. The outlet of the first enrichment device 5 and the outlet of the second enrichment device 6 are connected in series via a first valve 7 and a third valve 9, so that the effluent with a concentration higher than a second threshold detected by the online trace organic matter detector 16 flows from the first enrichment device 5 to the second enrichment device 6.

[0026] The inlets of the first enrichment device 5 and the second enrichment device 6 are located on the upper side wall, and the outlets of the first enrichment device 5 and the second enrichment device 6 are located at the bottom. The first enrichment device 5 and the second enrichment device 6 are provided with adsorbent material 17, which is located between the inlet and the outlet and is made of PUF polyurethane material and / or XAD-2 resin.

[0027] The equalization tank 1 is equipped with a mechanical screen 10 for preliminary filtration of the effluent. The flocculation tank 2 is equipped with coagulant and coagulant aid. The inclined plate sedimentation tank 3 includes an inclined plate sedimentation tank 31 and a first collection tank 32. The inlet of the inclined plate sedimentation tank 31 is connected to the outlet of the flocculation tank 2, and the outlet of the inclined plate sedimentation tank 31 is connected to the inlet of the first collection tank 32. Specifically, the lower side wall of the inclined plate sedimentation tank 31 has an inlet, and the upper side wall has an outlet. A first collection pipe 11 is installed at the outlet, which connects the inclined plate sedimentation tank 31 and the first collection tank 32. The inclined plate sedimentation tank 31 has a transverse inclined plate inside, which is located between the inlet and outlet of the inclined plate sedimentation tank 31. The activated carbon filter 4 includes a second water collection tank 41, an activated filter zone 42, and an instrument monitoring zone 43 connected in sequence. The outlet of the first water collection tank 32 is connected to the inlet of the second water collection tank 41. The outlet of the second water collection tank 41 is connected to the inlet on the upper side wall of the activated filter zone 42 via a perforated water distribution pipe 13. The outlet on the lower side wall of the activated filter zone 42 is connected to the instrument monitoring zone 43 via a second water collection pipe 15. An activated carbon layer 14 is provided inside the activated filter zone 42, located between the perforated water distribution pipe 13 and the second water collection pipe 15. Inlet and outlet pipes are mostly provided at the aforementioned inlet and outlet locations.

[0028] Specifically, the effluent passes through the mechanical screen 10 in the equalization tank 1 and enters the flocculation tank 2. Coagulants and flocculants can be added to the flocculation tank 2, causing particles in the water to aggregate and form colloids. These colloids then combine with impurities in the water to form larger flocs, which settle downwards to form sludge. The supernatant is discharged through the effluent pipe into the inclined tube sedimentation tank 3. The inclined tube sedimentation tank 3 consists of an inclined plate sedimentation tank 31 and a collection tank. After sedimentation on the inclined plate, the effluent enters the collection tank for buffering. From the collection tank, the effluent enters the activated carbon filter 4 through the effluent pipe. The activated carbon filter 4 consists of a collection tank, an activated carbon filter area 42, and an instrument monitoring area 43. After being buffered in the first collection tank 32, the effluent enters the activated carbon filter area 42. The activated carbon packing in the filter can intercept small flocs in the effluent, preventing them from being discharged into subsequent treatment devices.

[0029] An online trace organic matter detector 16 is installed near the filter outlet. When the detector 16 detects a high concentration of organic matter in the effluent, the first valve 7 and the third valve 9 in the three-way valve of the enrichment device open, while the second valve 8 closes. After being enriched by the first enrichment device 5, the effluent flows through the third valve 9 to the second enrichment device 6 for further enrichment. The adsorption material 17 of the first enrichment device 5 and the second enrichment device 6 can be PUF polyurethane material and XAD-2 resin, or other composite materials. The valve speed can be adjusted to facilitate the regulation of the enrichment rate of the effluent through the first enrichment device 5 and the second enrichment device 6, thereby ensuring that pollutants are fully adsorbed. When the detection device detects a low concentration of organic matter in the effluent, the first valve 7 and the second valve 8 in the three-way valve open, while the third valve 9 remains closed. After being enriched by the first enrichment device 5, the effluent is discharged through the second valve 8.

[0030] In summary, this application provides an adjustable enrichment device for antibiotics in pond effluent with varying concentrations, addressing the problem of enriching antibiotic pollutants in pond effluent at different concentrations. The device is equipped with an online trace antibiotic detector, and the flow direction of the effluent is adjusted via a three-way valve. Different enrichment methods are employed based on the antibiotic concentration in the effluent. This avoids the problem of incomplete enrichment when using a single method for high-concentration antibiotics in the effluent, while also preventing repeated enrichment of low-concentration antibiotic organic pollutants in the effluent, reducing enrichment time, and improving enrichment efficiency.

Claims

1. A device for enriching and purifying organic pollutants in effluent, characterized in that, The enrichment and purification device includes an activated carbon filter, a first enrichment device, and a second enrichment device connected in sequence. An online trace organic matter detector is installed inside the activated carbon filter. The outlet of the first enrichment device and the inlet of the second enrichment device are connected in series via a first valve and a second valve, so that the effluent with a concentration lower than the first threshold detected by the trace organic matter online detector flows from the first enrichment device to the second enrichment device. The outlets of the first enrichment device and the second enrichment device are connected in series via a first valve and a third valve, so that the effluent with a concentration higher than the second threshold detected by the online trace organic matter detector flows from the first enrichment device to the second enrichment device.

2. The enrichment and purification device according to claim 1, characterized in that, The inlets of the first enrichment device and the second enrichment device are located on the upper side wall, and the outlets of the first enrichment device and the second enrichment device are located at the bottom. The first enrichment device and the second enrichment device are provided with adsorbent material, which is located between the inlet and the outlet, and is made of PUF polyurethane material and / or XAD-2 resin.

3. The enrichment and purification device according to claim 1, characterized in that, The enrichment and purification device also includes the following components connected in sequence: An equalization tank is provided, which is equipped with a mechanical screen for preliminary filtration of the wastewater; A flocculation tank, wherein a coagulant and a coagulant aid are provided in the flocculation tank; An inclined tube sedimentation tank includes an inclined plate sedimentation tank and a first water collection tank. The inlet of the inclined plate sedimentation tank is connected to the outlet of the flocculation tank, and the outlet of the inclined plate sedimentation tank is connected to the inlet of the first water collection tank.

4. The enrichment and purification device according to claim 3, characterized in that, The inclined plate sedimentation tank has an inlet on its lower side wall and an outlet on its upper side wall. A first water collection pipe is installed at the outlet, which connects the inclined plate sedimentation tank and the first water collection tank. A transverse inclined plate is installed inside the inclined plate sedimentation tank, and the transverse inclined plate is located between the inlet and outlet of the inclined plate sedimentation tank.

5. The enrichment and purification device according to claim 4, characterized in that, The activated carbon filter includes a second water collection tank, an activated filter area, and an instrument monitoring area connected in sequence. The outlet of the first water collection tank is connected to the inlet of the second water collection tank. The outlet of the second water collection tank is connected to the inlet on the upper side wall of the activated filter area through a perforated water distribution pipe. The outlet on the lower side wall of the activated filter area is connected to the instrument monitoring area through the second water collection pipe. An activated carbon layer is provided in the activated filter area, and the activated carbon layer is located between the perforated water distribution pipe and the second water collection pipe.

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