Treatment device for treating high-concentration ammonia-nitrogen wastewater of PCB (Printed Circuit Board) production wastewater

Abstract

The utility model provides a treatment device for treating high-concentration ammonia nitrogen wastewater of PCB production wastewater, which comprises a wastewater collection pool, a dosing box, a first aeration mechanism and a reaction pool, the dosing box is used for dosing alkali into the wastewater collection pool, the wastewater collection pool is provided with an overflow port communicated with the reaction pool, the first aeration mechanism is arranged in the wastewater collection pool, and the reaction pool is provided with a second aeration mechanism. A plurality of water receiving grooves which are distributed up and down are formed in the reaction tank, in every two adjacent water receiving grooves, the water receiving groove located on the upper portion is provided with an overflow port corresponding to the interior of the water receiving groove located on the lower portion, the bottom of the reaction tank is connected with a water drainage port, and a second aeration mechanism is arranged in each water receiving groove. The treatment device can greatly shorten the treatment time of the ammonia-nitrogen wastewater.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of sewage treatment especially relates to a treatment device of high concentration ammonia nitrogen wastewater of PCB production wastewater. BACKGROUND

[0002] In the field of PCB production, the wastewater produced by the production of PCB contains high concentration of ammonia nitrogen, so these wastewater needs to be treated by ammonia nitrogen, and the conventional treatment method is to discharge the wastewater into a water storage pool, then through aeration treatment and adding alkali, the ammonia ion in the wastewater is converted into free ammonia, and the volatilization is accelerated through continuous aeration, so as to achieve the effect of removing ammonia nitrogen. Although this treatment method can remove ammonia nitrogen in wastewater, it generally needs a long time to reduce the ammonia nitrogen concentration in the wastewater to the standard of discharge.

[0003] Therefore, it is necessary to make further improvement. INVENTION CONTENTS

[0004] To solve the above problems, the utility model provides a treatment device of high concentration ammonia nitrogen wastewater of PCB production wastewater, adopts this treatment device can greatly reduce the treatment time of ammonia nitrogen wastewater.

[0005] The utility model provides a treatment device of high concentration ammonia nitrogen wastewater of PCB production wastewater, it includes wastewater collection pool, dosing box, first aeration mechanism and reaction pool, dosing box is used for putting alkali into wastewater collection pool, wastewater collection pool is equipped with the overflow of communication with reaction pool, first aeration mechanism is located in wastewater collection pool, be equipped with the multiple water receiving groove of upper and lower distribution in the reaction pool, in the adjacent two water receiving grooves, the water receiving groove of upper side has the overflow port of corresponding in the inside of the water receiving groove of lower side, the bottom of reaction pool is connected with the drain, be provided with second aeration mechanism in the water receiving groove.

[0006] In one or more embodiments, the wastewater collection pool is provided with a PH value detection probe, and the dosing box is provided with a dosing pump, which works according to the detection signal of the PH value detection probe.

[0007] In one or more embodiments, the dosing box is provided with sodium hydroxide solution.

[0008] In one or more embodiments, the groove depth of the water receiving groove is 30cm-60cm.

[0009] In one or more embodiments, the second aeration mechanism is a second air pipe, a plurality of aeration micropores are distributed on the second air pipe, the second air pipe extends out of the reaction pool and is connected with a second fan.

[0010] In one or more embodiments, the first aeration mechanism comprises a first air pipe and aeration heads distributed on the first air pipe, the first air pipe extending out of the wastewater collection tank and being connected to a first air blower.

[0011] In one or more embodiments, the top of the reaction tank is sealed, and the top of the reaction tank is provided with an ammonia discharge port connected to the ammonia recovery mechanism.

[0012] The processing device adjusts the PH value of the wastewater in the wastewater collection tank and preliminarily removes the ammonia nitrogen concentration in the wastewater by preliminary aeration and alkali agent feeding in the wastewater collection tank. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 The utility model discloses a structure schematic diagram of processing device. DETAILED DESCRIPTION

[0014] In order to deepen the understanding of the utility model, the utility model will be further detailed below in combination with examples and drawings, and the examples are only used to explain the utility model and do not constitute the limitation to the protection scope of the utility model.

[0015] Please refer to the accompanying Figure 1 The utility model provides a kind of processing device for processing PCB production wastewater high concentration ammonia nitrogen wastewater, it includes wastewater collection tank 1, dosing box 2, first aeration mechanism and reaction tank 3, dosing box 2 is used to throw alkali into wastewater collection tank 1, wastewater collection tank 1 is equipped with overflow 4 being communicated with reaction tank 3, overflow is set to the top position close to wastewater collection tank, first aeration mechanism is located in wastewater collection tank 1, when alkali enters wastewater collection tank, the PH value of wastewater can be adjusted, it is favorable to convert ammonia ion into volatile free ammonia, it is easy to be carried away by the bubble released by first aeration mechanism, and bubble escapes, the reaction tank 3 is equipped with multiple water receiving grooves 5 distributed in upper and lower, in the adjacent two water receiving grooves, the water receiving groove in upper position has overflow port corresponding to the inside of water receiving groove in lower position, so that the water in water receiving groove in upper position overflow remains in water receiving groove in lower position, the bottom of the reaction tank 3 is connected with drain 6, second aeration mechanism is provided in the water receiving groove 5, and multiple water receiving grooves are used in cooperation with second aeration mechanism, which can further improve the ammonia nitrogen removal efficiency in wastewater.

[0016] The wastewater collecting tank 1 is provided with a PH value detection probe 7, and the dosing box 2 is provided with a dosing pump 8, the dosing pump 8 works according to the detection signal of the PH value detection probe 7, the PH value in the scheme is set between 10-12, which is helpful for the conversion of ammonia ion into volatile free ammonia, when the PH value decreases, the dosing pump works to put alkali. When the PH value is in the range of 10-12, the dosing pump stops working. Specifically, the dosing box 2 is provided with sodium hydroxide solution.

[0017] The depth of the water collecting groove 5 is preferably 30cm-60cm, the water collecting groove depth used in the scheme is 50cm, and the water collecting groove with a groove depth of 30cm, 35cm, 40cm, 55cm and 60cm can also be selected according to the needs, and the reasonable water collecting groove depth has higher ammonia nitrogen treatment efficiency, and when the groove depth is too large, the ammonia nitrogen removal efficiency is affected.

[0018] The second aeration mechanism is a second air pipe, a plurality of aeration micropores 9 are distributed on the second air pipe, the second air pipe extends out of the reaction tank and is connected with a second fan, the aeration micropore can increase the gas-liquid contact area, which is beneficial to accelerate the conversion of ammonia ion into volatile free ammonia.

[0019] The first aeration mechanism includes a first air pipe 10 and an aeration head 11 distributed on the first air pipe, the first air pipe extends out of the wastewater collecting tank and is connected with a first fan 12.

[0020] The top of the reaction tank 3 is sealed, and the top of the reaction tank 3 is provided with an ammonia discharge port 13, the ammonia discharge port is connected with an ammonia recovery mechanism, so as to avoid direct emission and pollute the air environment.

[0021] The above only describes the preferred embodiments of the present application, and the protection scope of the present application is not limited to the above embodiments, but any equivalent modification or change made by the person skilled in the art according to the disclosed content of the present application shall be included in the protection scope recorded in the claims.

Claims

1. A treatment device for treating high-concentration ammonia nitrogen wastewater from PCB manufacturing, characterized in that: The system includes a wastewater collection tank (1), a dosing tank (2), a first aeration mechanism, and a reaction tank (3). The dosing tank (2) is used to add alkali into the wastewater collection tank (1). The wastewater collection tank (1) is provided with an overflow outlet (4) that is connected to the reaction tank (3). The first aeration mechanism is located in the wastewater collection tank (1). The reaction tank (3) is provided with multiple water receiving troughs (5) distributed vertically. In two adjacent water receiving troughs, the upper water receiving trough has an overflow outlet corresponding to the lower water receiving trough. The bottom of the reaction tank (3) is connected to a drain outlet (6). The water receiving trough (5) is provided with a second aeration mechanism.

2. The treatment device for treating high-concentration ammonia nitrogen wastewater from PCB manufacturing according to claim 1, characterized in that: The wastewater collection tank (1) is equipped with a pH value detection probe (7), and the dosing tank (2) is equipped with a dosing pump (8). The dosing pump (8) operates according to the detection signal of the pH value detection probe (7).

3. The treatment device for treating high-concentration ammonia nitrogen wastewater from PCB manufacturing according to claim 1, characterized in that: The dosing box (2) contains a sodium hydroxide solution.

4. The treatment device for treating high-concentration ammonia nitrogen wastewater from PCB manufacturing according to claim 1, characterized in that: The depth of the water receiving trough (5) is 30cm-60cm.

5. The treatment device for treating high-concentration ammonia nitrogen wastewater from PCB manufacturing according to claim 1, characterized in that: The second aeration mechanism is a second air pipe with multiple aeration micropores (9) distributed on it. The second air pipe extends out of the reaction tank and is connected to the second blower.

6. The treatment device for treating high-concentration ammonia nitrogen wastewater from PCB manufacturing according to claim 1, characterized in that: The first aeration mechanism includes a first air pipe (10) and aeration heads (11) distributed on the first air pipe. The first air pipe extends out of the wastewater collection tank and is connected to a first blower (12).

7. The treatment device for treating high-concentration ammonia nitrogen wastewater from PCB manufacturing according to claim 1, characterized in that: The top of the reaction tank (3) is sealed, and an ammonia discharge port (13) is provided on the top of the reaction tank (3), which is connected to an ammonia recovery mechanism.

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