Integrated dosing and conveying device for polymerization sewage pre-acidification pool

Abstract

The utility model discloses an integrated dosing and conveying device for a polymerization sewage pre-acidification pool, and relates to the technical field of sewage pretreatment, the integrated dosing and conveying device for the polymerization sewage pre-acidification pool comprises a nutritive salt dosing barrel, a NaOH dosing barrel and a sewage pre-acidification treatment pool, and the integrated dosing and conveying device for the polymerization sewage pre-acidification pool can save the occupied area of dosing equipment and reduce the cost. Four existing pump foundations are reduced to one pump foundation, the pipeline is connected with the first chemical inlet or the second chemical inlet and the sewage pre-acidification treatment tank through the flanges and the bolts, installation and maintenance are convenient, and all that is needed is to disassemble the bolts at the inlets and the outlets of the nutritive salt chemical adding barrel, the NaOH chemical adding barrel and the sewage pre-acidification treatment tank. In the prior art, two water pumps need to be operated at the same time, and the device combines two low-flow chemicals into one water pump, so that the operation cost of electric power is reduced.

Description

Technical Field

[0001] This utility model relates to the field of wastewater pretreatment technology, specifically to an integrated dosing and conveying device for a pre-acidification tank for polymer wastewater. Background Technology

[0002] Hydrolysis acidification is widely used in the pretreatment of industrial wastewater. Through hydrolysis acidification, the biodegradability of recalcitrant wastewater can be improved. The hydrolysis acidification tank requires the simultaneous addition of two different reagents: NaOH and nutrients. Traditional delivery processes typically require four pumps: two corrosion-resistant centrifugal pumps installed on-site for each reagent, one for operation and one for standby, each equipped with valves and instruments. This traditional method of pump-valve-instrument delivery results in a large footprint, numerous valves and instruments, and the need for continuous operation of two pumps. Because the continuous dosing and low flow rate are outside the pumps' high-efficiency operating range, energy is wasted. Therefore, an integrated dosing and delivery device for polymer wastewater pre-acidification tanks is proposed. Utility Model Content

[0003] To address the shortcomings of existing technologies, this invention provides an integrated dosing and conveying device for pre-acidification tanks of polymer wastewater, solving the problems mentioned in the background section.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an integrated dosing and conveying device for a pre-acidification tank of polymer wastewater, comprising a nutrient salt dosing tank, a NaOH dosing tank, and a wastewater pre-acidification treatment tank. A channel steel frame is provided between the nutrient salt dosing tank, the NaOH dosing tank, and the wastewater pre-acidification treatment tank. A first dosing mechanism is fixedly connected to the top of the channel steel frame, and a second dosing mechanism is fixedly connected to the top of the channel steel frame and to one side of the first dosing mechanism. The first dosing mechanism includes a first inlet, a first pressure regulating valve, a first pressure gauge, a first flow regulating valve, a first ball valve, and a first rotor flowmeter. The first inlet and the first pressure regulating valve are connected via a pipeline, the first pressure regulating valve and the first pressure gauge are connected via a pipeline, and the first pressure gauge is connected to the first flow regulating valve via a pipeline. The second dosing mechanism includes a second inlet, a second pressure regulating valve, a second pressure gauge, a second flow regulating valve, a second ball valve, and a second rotameter. The second inlet is connected to the second pressure regulating valve via a pipe. The second pressure regulating valve is connected to the second pressure gauge via a pipe. One end of the second pressure gauge is connected to the second flow regulating valve via a pipe. One end of the second flow regulating valve is connected to one end of the second ball valve via a pipe. The other end of the second ball valve is connected to one end of the second rotameter via a pipe. A tee is fixedly connected between one end of the second rotameter and one end of the first rotameter. A pipe mixer is fixedly connected to the other end of the tee.

[0005] Preferably, a screw dosing pump is fixedly connected above the bottom of the channel steel frame, one end of the pipeline mixer is connected to the inlet of the screw dosing pump, and a third ball valve is connected to the outlet of the screw dosing pump, with a dosing head fixedly connected to one end of the third ball valve.

[0006] Preferably, the outlet of the nutrient salt dosing tank is connected to one end of the first inlet via a pipe.

[0007] Preferably, the outlet of the NaOH dosing tank is connected to one end of the second inlet via a pipe.

[0008] Preferably, one end of the dispensing head is connected to the inlet of the wastewater pre-acidification treatment tank via a pipe.

[0009] This utility model provides an integrated dosing and conveying device for a pre-acidification tank of polymer wastewater, which has the following beneficial effects:

[0010] This integrated dosing and conveying device for polymer wastewater pre-acidification tanks saves on the floor space required for dosing equipment, reducing the need for four pump foundations to one. Connections between the pipeline and the first or second inlet, as well as the wastewater pre-acidification tank, are made via flanges and bolts, facilitating installation and maintenance. Simply removing the bolts connecting the nutrient salt dosing tank, NaOH dosing tank, and the inlet / outlet of the wastewater pre-acidification tank allows for equipment replacement and backup, ensuring uninterrupted production. While traditional technologies require two pumps operating simultaneously, this device combines two low-flow-rate reagents into one pump, reducing electricity costs. It also reduces the number of diaphragm pumps from four to one screw pump, and the number of inlet and outlet valves from four to two sets, significantly lowering costs. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0012] Figure 2 This is a three-dimensional structural diagram of the present invention;

[0013] Figure 3 This is a top view of the channel steel frame structure of this utility model.

[0014] In the diagram: 1. First inlet; 11. First pressure regulating valve; 12. First pressure gauge; 13. First flow regulating valve; 14. First ball valve; 15. First rotor flow meter; 2. Second inlet; 21. Second pressure regulating valve; 22. Second pressure gauge; 23. Second flow regulating valve; 24. Second ball valve; 25. Second rotor flow meter; 3. Pipeline mixer; 4. Third ball valve; 5. Discharge head; 6. Screw dosing pump; 7. Channel steel frame; 8. Nutrient salt dosing tank; 9. NaOH dosing tank; 10. Wastewater pre-acidification treatment tank; 16. Tee. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0016] Please see Figures 1 to 3This utility model provides a technical solution: an integrated dosing and conveying device for a pre-acidification tank of polymer wastewater, comprising a nutrient salt dosing tank 8, a NaOH dosing tank 9, and a wastewater pre-acidification treatment tank 10. A channel steel frame 7 is provided between the nutrient salt dosing tank 8, the NaOH dosing tank 9, and the wastewater pre-acidification treatment tank 10. A first dosing mechanism is fixedly connected to the top of the channel steel frame 7, and a second dosing mechanism is fixedly connected to the top of the channel steel frame 7 and to one side of the first dosing mechanism. The first dosing mechanism includes a first inlet 1, a first pressure regulating valve 11, a first pressure gauge 12, a first flow regulating valve 13, a first ball valve 14, and a first rotor flowmeter 15. The first inlet 1 and the first pressure regulating valve 11 are connected by a pipe, the first pressure regulating valve 11 and the first pressure gauge 12 are connected by a pipe, and the first pressure gauge 12 is connected to the first flow regulating valve 13 by a pipe. The other end of 13 is connected to the first ball valve 14 through a pipe. One end of the first ball valve 14 is connected to the first rotor flowmeter 15 through a pipe. The second dosing mechanism includes a second inlet 2, a second pressure regulating valve 21, a second pressure gauge 22, a second flow regulating valve 23, a second ball valve 24, and a second rotor flowmeter 25. The second inlet 2 is connected to the second pressure regulating valve 21 through a pipe. The second pressure regulating valve 21 is connected to the second pressure gauge 22 through a pipe. One end of the second pressure gauge 22 is connected to the second flow regulating valve 23 through a pipe. One end of the second flow regulating valve 23 is connected to one end of the second ball valve 24 through a pipe. The other end of the second ball valve 24 is connected to one end of the second rotor flowmeter 25 through a pipe. A tee 16 is fixedly connected between one end of the second rotor flowmeter 25 and one end of the first rotor flowmeter 15. The other end of the tee 16 is fixedly connected to a pipe mixer 3.

[0017] A screw dosing pump 6 is fixedly connected to the top of the bottom of the channel steel frame 7. One end of the pipeline mixer 3 is connected to the inlet of the screw dosing pump 6. A third ball valve 4 is connected to the outlet of the screw dosing pump 6. A dosing head 5 is fixedly connected to one end of the third ball valve 4. The two agents can be transported into the sewage pre-acidification treatment tank 10 through the dosing head 5. The outlet of the nutrient salt dosing tank 8 is connected to one end of the first inlet 1 through a pipeline, so that the nutrient salt in the nutrient salt dosing tank 8 can be input into the first inlet 1. The outlet of the NaOH dosing tank 9 is connected to one end of the second inlet 2 through a pipeline, so that the NaOH solution in the NaOH dosing tank 9 can be input into the second inlet 2. One end of the dosing head 5 is connected to the inlet of the sewage pre-acidification treatment tank 10 through a pipeline, so that the two mixed agents can be input into the sewage pre-acidification treatment tank 10 through the dosing head 5.

[0018] In summary, this integrated dosing and conveying device for the pre-acidification tank of polymerized wastewater is used by fixing the device to a concrete foundation. The bottom of the channel steel frame 7 is fixed to the concrete foundation with anchor bolts. The outlet of the nutrient dosing tank 8 is connected to the first inlet 1 via a pipe, and the outlet of the NaOH dosing tank 9 is connected to the second inlet 2 via a pipe. One end of the dosing head 5 is connected to the inlet of the wastewater pre-acidification treatment tank 10 via a pipe. The pipe is connected to the first inlet 1 or the second inlet 2 and the wastewater pre-acidification treatment tank. When connecting the treatment tanks 10, they are connected by flanges and bolts. Nutrients inside the nutrient dosing tank 8 enter the first inlet 1 through a pipeline, then pass through the first pressure regulating valve 11 to adjust the pressure; the pressure is monitored and stabilized by reading the value of the first pressure gauge 12; the first flow regulating valve 13 is adjusted to ensure the dosage; the addition of a single chemical is switched by opening and closing the first ball valve 14; the effect of flow regulation and the dosage are monitored by reading the value of the first rotor flowmeter 15. Next, the solution enters the pipeline mixer 3 through the tee 16. NaOH solution inside the NaOH dosing tank 9 enters the second inlet 2, then passes through the second pressure regulating valve 21 to adjust the pressure; the pressure is monitored and stabilized by reading the value of the second pressure gauge 22; the dosage is adjusted by adjusting the second flow regulating valve 23; the addition of a single chemical is switched by opening and closing the second ball valve 24; the effect of flow regulation and the dosage are monitored by reading the value of the second rotor flowmeter 25; the solution enters the pipeline mixer 3 through the tee 16. The two chemicals are fully mixed in the pipeline mixer 3 and then enter the screw compressor. After being pressurized in the dosing pump 6, the solution enters the wastewater pre-acidification treatment tank 10 through the outlet head 5 and the pipe connected to it for treatment. In the wastewater pre-acidification treatment tank 10, the effect of NaOH dosing can be monitored by a pH meter installed inside the wastewater pre-acidification treatment tank 10. According to the pH meter reading, the second flow regulating valve 23 is adjusted to adjust the NaOH dosage to meet the acid-base requirements of the pre-acidification tank. When nutrients need to be added separately, the second ball valve 24 is closed. When NaOH reagent needs to be added separately, the first ball valve 14 is closed.

[0019] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An integrated dosing and conveying device for polymerized wastewater pre-acidification tank, characterized in that: The invention comprises a nutrient salt dosing barrel (8), a NaOH dosing barrel (9) and a sewage pre-acidification treatment tank (10), wherein a channel steel frame (7) is arranged between the nutrient salt dosing barrel (8), the NaOH dosing barrel (9) and the sewage pre-acidification treatment tank (10), wherein a first dosing mechanism is fixedly connected to the top of the channel steel frame (7), and a second dosing mechanism is fixedly connected to the top of the channel steel frame (7) and located on one side of the first dosing mechanism, wherein the first dosing mechanism comprises a first drug inlet (1), a first pressure regulating valve (11 ), a first pressure gauge (12), a first flow regulating valve (13), a first ball valve (14) and a first rotor flow meter (15), the first drug inlet (1) and the first pressure regulating valve (11) are connected via a pipeline, the first pressure regulating valve (11) and the first pressure gauge (12) are connected via a pipeline, the first pressure gauge (12) is connected to the first flow regulating valve (13) via a pipeline, and the other end of the first flow regulating valve (13) is connected to the first ball valve (14) via a pipeline One end of the first ball valve (14) is connected to the first rotor flowmeter (15) through a pipeline; the second drug adding mechanism comprises a second drug inlet (2), a second pressure regulating valve (21), a second pressure gauge (22), a second flow regulating valve (23), a second ball valve (24) and a second rotor flowmeter (25); the second drug inlet (2) is connected to the second pressure regulating valve (21) through a pipeline; the second pressure regulating valve (21) is connected to the second pressure gauge (22) through a pipeline; one end of the second pressure gauge (22) is connected to the second flow regulating valve (23) through a pipeline; one end of the second flow regulating valve (23) is connected to one end of the second ball valve (24) through a pipeline; the other end of the second ball valve (24) is connected to one end of the second rotor flowmeter (25) through a pipeline; a tee (16) is fixedly connected between one end of the second rotor flowmeter (25) and one end of the first rotor flowmeter (15); the other end of the tee (16) is fixedly connected to a pipeline mixer (3).

2. The integrated dosing and conveying device for polymerized wastewater pre-acidification tank according to claim 1 is characterized in that: A screw dosing pump (6) is fixedly connected above the bottom of the channel steel frame (7), one end of the pipeline mixer (3) is connected to the inlet of the screw dosing pump (6), the outlet of the screw dosing pump (6) is connected to a third ball valve (4), and one end of the third ball valve (4) is fixedly connected to a drug outlet head (5).

3. The integrated dosing and conveying device for polymerized wastewater pre-acidification tank according to claim 1 is characterized in that: The drug outlet of the nutrient salt drug adding barrel (8) is connected to one end of the first drug inlet (1) via a pipeline.

4. The integrated dosing and conveying device for polymerized wastewater pre-acidification tank according to claim 1 is characterized in that: The drug outlet of the NaOH drug adding barrel (9) is connected to one end of the second drug inlet (2) through a pipeline.

5. The integrated dosing and conveying device for polymerized wastewater pre-acidification tank according to claim 2 is characterized in that: One end of the drug outlet head (5) is connected to the drug inlet of the sewage pre-acidification treatment tank (10) through a pipeline.

Images