Compound system of green flocculant for water treatment

Abstract

The utility model relates to a compounding system of a water treatment green flocculant, which comprises a first alkalization box and a second alkalization box which are used for containing reaction raw materials, and the bottoms of the first alkalization box and the second alkalization box are both connected with liquid outlet pipelines. Reaction raw materials (such as corn starch and sweet potato starch) in the first alkalization box and the second alkalization box are mixed in the third alkalization box (mixed starch liquid) through liquid outlet pipelines, and regulation and control metering pumps used for regulating and controlling the discharging volumes of the reaction raw materials in the first alkalization box and the second alkalization box are arranged on the liquid outlet pipelines. The first alkalization box (corn starch liquid), the second alkalization box (sweet potato starch liquid) and the third alkalization box (mixed starch liquid) are further provided with digital display viscometers for detecting the viscosity of internal reaction raw materials, the compounding system further comprises a PLC (programmable logic controller), and the regulation and control metering pump and the digital display viscometers are electrically connected with the PLC. Compared with the prior art, the device disclosed by the utility model has the advantages of simple structure, more excellent flocculant synthesis performance and the like.

Description

Technical Field

[0001] The utility model relates to a compounding system, in particular to a compounding system for a green flocculant for water treatment. Background Technique

[0002] With the continuous strengthening of the public's environmental protection awareness and the increasingly strict environmental regulations, the traditional organic synthetic polymer flocculants and inorganic salt coagulants on the market will leave toxic monomers or metal ions, which are prone to cause secondary pollution. Therefore, it is necessary to find a green polymer flocculant that is cheap, renewable, and does not cause other secondary pollution. At present, there have been reports on the preparation and application of modified natural polymer flocculants such as starch, cellulose, and chitosan. Among them, starch, as a commonly used green and biodegradable natural polymer material, has good application scenarios.

[0003] The existing starch-based flocculants are usually prepared with single-produced starch. The linear and branched molecular structures it contains are relatively close, resulting in similar properties. Also, based on the viscosity of the starch alkalization solution, the molecular weight and chain structure distribution of the starch solution can be indirectly judged. Therefore, a compounding system can be used to regulate the mixing ratio of the alkalization solutions of corn starch and sweet potato starch, and at the same time monitor the viscosities of the alkalization solutions of corn starch and sweet potato starch, thereby enriching the molecular structure of the starch substrate, optimizing the ratio of linear and branched chains of starch, and expanding the application range of the green flocculant. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the defects of the above-mentioned existing technologies and provide a compounding system for a green flocculant for water treatment, which regulates the ratio of the alkalization solutions of corn starch and sweet potato starch, accurately monitors the viscosity change of the system, and then improves and optimizes the ratio of linear and branched chains of starch, and expands the application range of the green flocculant.

[0005] The purpose of the utility model can be realized by the following technical solutions:

[0006] A compounding system for a green flocculant for water treatment, comprising:

[0007] A No. 1 alkalization tank and a No. 2 alkalization tank for containing reaction raw materials. The bottoms of the No. 1 alkalization tank and the No. 2 alkalization tank are both connected with liquid outlet pipes. The reaction raw materials inside the No. 1 alkalization tank and the No. 2 alkalization tank are mixed in a No. 3 alkalization tank through the corresponding liquid outlet pipes, and regulating metering pumps for regulating the discharge volume of the corresponding reaction raw materials are provided on the liquid outlet pipes.

[0008] Digital display viscometers for detecting the viscosities of the internal reaction raw materials are also provided on the No. 1 alkalization tank and the No. 2 alkalization tank.

[0009] The compounding system further includes a PLC controller, and the regulating metering pumps and the digital display viscometers are both electrically connected to the PLC controller.

[0010] Further, a heating component is provided inside the No. 1 alkalization tank and the No. 2 alkalization tank, and the heating component is electrically connected to the PLC controller.

[0011] Further, the heating component is arranged at the bottom inside the No. 1 alkalization tank and the No. 2 alkalization tank.

[0012] Further, stirrers are also provided on both the No. 1 alkalization tank and the No. 2 alkalization tank.

[0013] Further, the stirrer is electrically connected to the PLC controller to regulate the stirring rate of the stirrer.

[0014] Further, a functional liquid storage tank is also connected to the No. 3 alkalization tank.

[0015] Further, the No. 3 alkalization tank is connected to the functional liquid storage tank through a liquid inlet pipeline.

[0016] Further, a flow metering pump is provided on the liquid inlet pipeline.

[0017] Further, a heater is provided at the bottom inside the No. 3 alkalization tank, and a stirring paddle and a third digital display viscometer are also provided on the No. 3 alkalization tank.

[0018] Further, the heater, the stirring paddle and the third digital display viscometer are all electrically connected to the PLC controller.

[0019] Compared with the prior art, the present utility model has the following advantages:

[0020] The device provided by the present utility model is provided with a PLC controller, which is connected to the heating component, the stirrer, the digital display viscometer and the flow control valve inside the No. 1 alkalization tank and the No. 2 alkalization tank, so as to control the operation of the functional components inside the alkalization tank. At the same time, both the No. 1 alkalization tank and the No. 2 alkalization tank are provided with digital display viscometers for monitoring the viscosity of the system inside the alkalization tank. When the digital display viscometer detects that the viscosity of the system inside the alkalization tank reaches the standard, it will transmit a signal to the PLC controller, and the PLC controller will then control the flow control valve to control the outflow flow of the liquid in the two alkalization tanks, thereby improving the diversity of the linear and branched chain structures in the starch substrate and being adjustable through the mixing ratio, and enhancing the applicable range of the green flocculant. Description of the Drawings

[0021] Figure 1 is a schematic diagram of a compounding system for a water treatment green flocculant of the present utility model;

[0022] Figure 2 is a flocculation effect diagram of the flocculant prepared by using the compounding system for a water treatment green flocculant of the present utility model;

[0023] Reference numerals: alkalinization tank 1, alkalinization tank 2, alkalinization tank 3, PLC controller 4, functional liquid storage 5, first liquid outlet pipe 11, first regulating metering pump 12, first digital display viscometer 13, first heater 14, first stirrer 15, second liquid outlet pipe 21, second regulating metering pump 22, second digital display viscometer 23, second heater 24, second stirrer 25, heater 31, stirring paddle 32, third digital display viscometer 33, flow metering pump 51. Detailed implementation mode

[0024] The present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments. Features such as component models, material names, connection structures, control methods, algorithms, etc. that are not clearly described in this technical solution are all regarded as common technical features disclosed in the prior art.

[0025] Embodiment

[0026] This embodiment provides a compounding system for a water treatment green flocculant, including:

[0027] Alkalinization tank 1 and alkalinization tank 2 for containing reaction raw materials. Among them, the bottom of alkalinization tank 1 is connected with first liquid outlet pipe 11, the bottom of alkalinization tank 2 is connected with second liquid outlet pipe 21. The reaction raw materials inside alkalinization tank 1 and alkalinization tank 2 are mixed in alkalinization tank 3 through first liquid outlet pipe 11 and second liquid outlet pipe 21, and then a water treatment green flocculant is prepared. The device also includes a PLC controller 4.

[0028] In this embodiment, a first regulating metering pump 12 for regulating the discharge volume of the reaction raw materials inside alkalinization tank 1 is provided on the first liquid outlet pipe 11, and a second regulating metering pump 22 for regulating the discharge volume of the reaction raw materials inside alkalinization tank 1 is provided on the second liquid outlet pipe.

[0029] In this embodiment, a first digital display viscometer 13, a second digital display viscometer 23, and a third digital display viscometer 33 for monitoring the viscosity of the reaction raw materials inside the alkalinization tank are respectively provided on alkalinization tank 1, alkalinization tank 2, and alkalinization tank 3.

[0030] In this embodiment, a first heater 14, a second heater 24, and a heater 31 are respectively provided at the bottom inside the tank bodies of alkalinization tank 1, alkalinization tank 2, and alkalinization tank 3.

[0031] In this embodiment, a first stirrer 15, a second stirrer 25, and a stirring paddle 32 are also respectively provided on alkalinization tank 1, alkalinization tank 2, and alkalinization tank 3.

[0032] In this embodiment, the No. 3 alkalization tank 3 is also connected to a functional liquid storage tank 5 through a liquid inlet pipeline. A flow metering pump 51 is provided on the liquid inlet pipeline for regulating the feeding volume of the functional liquid.

[0033] In this embodiment, the No. 1 heater, the No. 2 heater and the heater 31 are all electrically connected to the PLC controller, and the reaction temperature is controlled by the PLC controller.

[0034] The No. 1 stirrer, the No. 2 stirrer and the stirring paddle are all electrically connected to the PLC controller, and the stirring intensity is adjusted by the PLC controller.

[0035] The No. 1 digital display viscometer, the No. 2 digital display viscometer and the third digital display viscometer are all electrically connected to the PLC controller. When the digital display viscometer detects that the viscosity of the system in the alkalization tank reaches the standard, it transmits a signal to the PLC controller, and the PLC controller then controls the flow regulating valve to control the liquid flow of the liquids in the two alkalization tanks entering the No. 3 alkalization tank.

[0036] The flow metering pump 51 is electrically connected to the PLC controller to control the feeding volume of the functional liquid.

[0037] When the device provided in this embodiment is in use:

[0038] (1) 10 g of corn starch and 10 g of sweet potato starch are respectively dispersed in 200 mL of 10% sodium hydroxide solution and placed in the No. 1 alkalization tank 1 and the No. 2 alkalization tank 2 respectively. The parameters are input into the PLC controller 4, and the No. 1 heater and the No. 2 heater in the No. 1 alkalization tank 1 and the No. 2 alkalization tank 2 are controlled to heat up to 60 °C and keep the temperature constant for alkalization for 1 hour.

[0039] Among them, the No. 1 digital display viscometer and the No. 2 digital display viscometer respectively show that the viscosities of the corn starch alkalization liquid and the sweet potato starch alkalization liquid are 63 mPa·s and 54 mPa·s respectively, both of which are greater than 30 mPa·s and meet the standard. The system runs normally. At this time, a signal is fed back to the PLC controller, and the No. 1 regulating metering pump and the No. 2 regulating metering pump are regulated by the PLC to make the compounding system be mixed in a ratio of 5:1 and enter the No. 3 alkalization tank 3. At this time, the third digital display viscometer shows that the viscosity of the mixed alkalization liquid is 60 mPa·s, and the viscosity is greater than 30 mPa·s, and the system runs normally.

[0040] (2) The PLC controller 4 regulates the flow metering pump 51 to add 30 mL of 3-chloro-2-hydroxypropyltrimethylammonium chloride solution with a concentration of 60 wt% in a dropping manner; and the system is heated to 60 °C by the heater, and the stirring paddle continuously stirs at a speed of 60 revolutions per minute for a constant temperature reaction for 1 hour.

[0041] (3) Manually adjust the pH of the system in the No. 3 alkalization tank to 7.1 using 1M and 0.1M hydrochloric acid. After adding ethanol to precipitate the sample, skim off the supernatant. After repeating the precipitation process 2 - 3 times, dry and crush the precipitate in a 60°C oven to obtain a powdery green flocculant.

[0042] Dissolve the powdery flocculant in water to prepare a flocculant aqueous solution, and carry out flocculation on the water body. Its turbidity removal effect on kaolin simulated wastewater is as Figure 2 shown. The turbidity of the water body is reduced from about 35 NTU to below 10 NTU, indicating that the green flocculant prepared by using the device provided in this embodiment has a turbidity removal effect by flocculation.

[0043] The above description of the embodiments is for the convenience of those of ordinary skill in the art to understand and use the utility model. It is obvious that those skilled in the art can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without creative labor. Therefore, the present utility model is not limited to the above embodiments, and the improvements and modifications made by those skilled in the art without departing from the scope of the present utility model according to the disclosure of the present utility model should be within the protection scope of the present utility model.

Claims

1. A compounding system of green flocculant for water treatment, characterized in that: include: A No. 1 alkalization box (1) and a No. 2 alkalization box (2) are used for containing reaction raw materials, wherein the bottoms of the No. 1 alkalization box (1) and the No. 2 alkalization box (2) are connected to liquid outlet pipes, and the reaction raw materials in the No. 1 alkalization box (1) and the No. 2 alkalization box (2) are mixed in the No. 3 alkalization box (3) through the corresponding liquid outlet pipes, and the liquid outlet pipes are provided with control metering pumps for controlling the discharge volume of the corresponding reaction raw materials, The No. 1 alkalization box (1) and the No. 2 alkalization box (2) are also provided with a digital viscometer for detecting the viscosity of the internal reaction raw materials. The compounding system also includes a PLC controller (4), and the regulating metering pump and the digital display viscometer are both electrically connected to the PLC controller (4).

2. The compounding system of green flocculant for water treatment according to claim 1, characterized in that: The No. 1 alkalization box (1) and the No. 2 alkalization box (2) are also provided with heating components, and the heating components are electrically connected to the PLC controller (4).

3. The compounding system of green flocculant for water treatment according to claim 2, characterized in that: The heating components are arranged at the bottom of the No. 1 alkalization box (1) and the No. 2 alkalization box (2).

4. The compounding system of green flocculant for water treatment according to claim 1, characterized in that: The No. 1 alkalization box (1) and the No. 2 alkalization box (2) are both provided with a stirrer.

5. The compounding system of green flocculant for water treatment according to claim 4, characterized in that: The stirrer is electrically connected to a PLC controller (4) to thereby regulate the stirring rate of the stirrer.

6. The compounding system of green flocculant for water treatment according to claim 1, characterized in that: The No. 3 alkalization box (3) is also connected to a functional liquid storage device (5).

7. The compounding system of green flocculant for water treatment according to claim 6, characterized in that: The No. 3 alkalization box (3) is connected to the functional liquid storage device (5) via a liquid inlet pipeline.

8. The compounding system of green flocculant for water treatment according to claim 7, characterized in that: A flow metering pump (51) is provided on the liquid inlet pipeline.

9. The compounding system of green flocculant for water treatment according to claim 1, characterized in that: The bottom of the No. 3 alkalization box (3) is provided with a heater (31), and the No. 3 alkalization box (3) is also provided with a stirring paddle (32) and a third digital viscometer (33).

10. The compounding system of green flocculant for water treatment according to claim 9, characterized in that: The heater (31), the stirring paddle (32) and the third digital viscometer (33) are all electrically connected to the PLC controller (4).

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