A variable-frequency regulated dynamic impinging stream device for treating acid-base wastewater

Abstract

A frequency conversion regulated dynamic impinging stream device for treating acid-base wastewater, which relates to a device for treating acid-base wastewater. The device filters out impurities in the wastewater in the impurity removal area, and adjusts the water pump through a frequency converter to make the two jets in the feed pipe of the impinging area change periodically and dynamically, increasing the turbulence degree and contact area of the wastewater to neutralize the acid-base wastewater. A pH detection port is arranged at the lower outlet of the impinging area to monitor the wastewater in real time. At the same time, the turbine and transmission device between the two partitions at the lower part of the impinging area drive the stirring paddle to stir under the drive of the water flow. The connecting rod of the stirring paddle is a hollow tube, and circular holes are arranged on the tube body. When stirring, the wastewater flows through the circular holes to form entrainment, promoting the mixing of the wastewater and the oxidation disinfectant. This process equipment consists of an impurity removal area, an impinging area, and an oxidation disinfection area. The characteristics of this treatment method are to increase the turbulence degree of the fluid; the fluid impinges at high speed to break and aggregate the particle microgroups together, providing good premixing treatment for the subsequent process, reducing energy loss, and lowering the treatment cost of the wastewater, having good application prospects.

Description

Technical Field

[0001] The invention relates to a frequency conversion regulating type dynamic impingement flow device for treating acid and alkali wastewater, in particular to a device for treating acid and alkali wastewater. Background Art

[0002] At present, with the vigorous development of my country's economy, the process of industrialization is also gradually advancing, and the problem of environmental pollution is becoming more and more serious. Among them, with the development of industry, many process industries such as chemical production and petrochemicals will produce acidic or alkaline wastewater, the amount of industrial wastewater is gradually increasing, and the number of cases of industrial wastewater being secretly discharged into rivers and lakes is also gradually increasing. The discharge of industrial wastewater into natural water bodies will cause serious water pollution, which will eventually cause a series of environmental problems and water shortages. Therefore, the purification and treatment of industrial wastewater also plays an increasingly important role in environmental pollution control.

[0003] Impinging stream is a special flow pattern first proposed by Elperin. Its concept is that two or more fluids (gas-solid, liquid-liquid or gas-liquid) collide to form a highly turbulent collision area. As a novel technical method, the main feature of impinging stream is to achieve the purpose of enhancing mass transfer through the high-speed collision of two opposing fluids.

[0004] However, for specific material processing requirements, the structure and method of the processing device are very different, that is, it can fully reflect the excellent characteristics of the impact flow and be applied to special technical solutions. It is of great significance, especially in the field of wastewater treatment, and has good application value and prospects. Summary of the invention

[0005] The purpose of the present invention is to provide a frequency-variable dynamic impact flow treatment device for acid and alkali wastewater. The present invention utilizes a turbine and a transmission device between two baffles at the bottom of the impact zone to drive a stirring paddle to stir under the drive of water flow, and changes the flow rate of the two nozzle jets periodically and dynamically. This is achieved by controlling a water pump with a frequency converter, thereby increasing the turbulence of the impact flow and improving the wastewater treatment effect.

[0006] The objective of the present invention is achieved through the following technical solutions:

[0007] A variable frequency regulated dynamic impingement flow device for treating acid and alkaline wastewater, wherein the device shell is an upright cylindrical body as a whole, the upper part is an open impurity removal area for filtering impurities in the wastewater, and the lower part is equipped with an elliptical head; the feed pipes in the impact zone are coaxially opposed and have the same diameter; a tapered nozzle is installed at one end of the feed pipe, and the other end is connected to the impurity removal area and a water pump, and the water pump is controlled by a frequency converter to dynamically change the nozzle inlet flow rate; the ratio between the spacing between the opposing nozzles and the nozzle diameter is freely adjusted according to actual conditions and needs; a turbine and a transmission device are installed between the two partitions between the impact zone and the oxidation and disinfection zone; the lower channel of the impact zone increases the flow rate of the wastewater to drive the turbine; the agitator in the oxidation and disinfection zone stirs the wastewater under the drive of a worm gear-worm transmission device, and the connecting rod of the agitator is a detachable structure; at the same time, the connecting rod is a hollow tube, and the tube body is provided with circular holes, and the shape and arrangement of the holes are adjusted according to actual conditions, and the suction phenomenon formed when the agitator stirs further accelerates the oxidation and disinfection process.

[0008] The described device for treating acidic and alkaline wastewater with a variable frequency regulated dynamic impingement flow has internal threads at both ends of the impingement zone feed pipe and is equipped with tapered nozzles of different tapers and diameters. The jet flow rates of the two nozzles change dynamically in a step-like manner periodically, and the dynamic regulation is completed by controlling the water pump with a frequency converter.

[0009] The variable frequency regulated dynamic impingement flow device for treating acidic and alkaline wastewater has a pH detection port at the conical straight channel port at the bottom of the impact zone, and a pH monitor for real-time monitoring of the pH of the wastewater is installed to detect the wastewater; at the same time, the amount of the external pH regulator of the feed pipe is adjusted in real time.

[0010] The advantages and effects of the present invention are:

[0011] 1. The present invention takes dynamic impinging flow technology as the main design concept, and makes full use of the high-speed and violent impact of dynamic impinging flow to treat acidic wastewater and alkaline wastewater, increase the turbulence degree and contact surface of the wastewater, break up the aggregated particle clusters, and reduce the difficulty of subsequent processing.

[0012] 2. The device of the present invention utilizes the turbine and transmission device between the two partitions at the bottom of the impact zone to drive the stirring paddle to stir under the drive of water flow. At the same time, the connecting rod of the stirring paddle is a hollow tube, and a circular hole is arranged on the tube body. When the stirring paddle stirs, the wastewater flows through the circular hole and the hollow tube to form a suction phenomenon to accelerate the oxidation and disinfection process.

[0013] 3. In terms of device structure, the nozzle of the present invention is designed to be detachable and have a certain taper. Nozzles with different tapers and inner diameters can be replaced according to different needs. The jet flow rates of the two nozzles change periodically and dynamically, which is achieved by controlling the water pump with a frequency converter, thereby increasing the turbulence of the impact flow and improving the wastewater treatment effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1It is a schematic diagram of the overall structure of a device for treating acid and alkaline wastewater using a variable frequency regulated dynamic impingement flow;

[0015] Figure 2 A schematic diagram of the structure of a partition between the impact zone and the oxidation disinfection zone;

[0016] Figure 3 It is a schematic diagram of the structure of the second partition between the impact zone and the oxidation disinfection zone;

[0017] Figure 4 This is a schematic diagram of the frequency converter controlling the flow rate periodic step-type dynamic change.

[0018] Components in the figure: housing 1, frequency converter 2, pump 3, pressure gauge 4, valve 5, impact zone feed pipe - left 6, nozzle - left 7, pH adjuster box - left 8, pH tester 9, turbine 10, connecting rod 11, stirring paddle 12, oxidizing disinfectant feed port 13, oxidizing disinfectant box 14, partition one between impact zone and oxidizing disinfection zone 15, partition two between impact zone and oxidizing disinfection zone 16, impact zone feed pipe - right 17, nozzle - right 18, pH adjuster box - right 19, filter screen two 20, filter screen one 21. DETAILED DESCRIPTION

[0019] The present invention will be described in detail below with reference to the embodiments shown in the accompanying drawings.

[0020] A variable frequency regulated dynamic impinging flow process device for treating acidic and alkaline wastewater. It utilizes the characteristics of the impinging flow to increase the contact area of ​​the wastewater and prolong the mixing time of the wastewater to neutralize the acidic and alkaline wastewater; at the same time, the turbine and the transmission device drive the stirring paddle to stir under the drive of the water flow. The device used is a variable frequency regulated dynamic impinging flow treatment device, which consists of three parts: the impurity removal zone, the impingement zone, and the oxidation and disinfection zone.

[0021] The device consists of an elliptical head, a shell, a filter, a feed pipe, a pressure gauge, a pH test port, a turbine, a connecting rod, a stirring paddle, an oxidizing disinfectant feed port, a pump, a frequency converter, a detachable nozzle, and various connecting pipes and flanges.

[0022] The two jet flows of the impact zone nozzle are adjusted by the frequency converter to make the water pump change periodically and dynamically. The change form can be adjusted to various forms such as sine, step, triangle, etc. The flow of the two nozzles is equal in one cycle.

[0023] The turbine and the transmission device are installed between two partitions at the lower part of the impact zone, and the transmission device is a worm gear-worm meshing structure.

[0024] The connecting rod of the stirring paddle is a hollow tube structure, and the tube body is provided with circular holes. The size, shape and arrangement of the circular holes can be adjusted according to the actual application situation; the connecting rod is a detachable structure, which is convenient for installation and replacement.

[0025] A pH monitor that can monitor the pH of wastewater is installed at the pH detection port at the bottom channel port of the impact zone to detect the wastewater.

[0026] like Figure 1 As shown, the acidic wastewater and alkaline wastewater are filtered through the impurity removal area. The symmetrical structure is arranged to filter the acidic wastewater and the alkaline wastewater respectively. The two filter screens are placed vertically. The aperture of the first filter screen is larger than that of the second filter screen. The impurities in the two wastewaters can be fully filtered and are conducive to the precipitation of impurities. After that, the acidic wastewater and the alkaline wastewater are violently impacted in the impact zone through the feed pipe and the nozzle under the action of the water pump to carry out acid-base neutralization reaction. The feed pipe nozzle can be freely disassembled and has a certain taper; the water pump is controlled by the inverter to adjust the nozzle jet flow rate to a periodic dynamic change, and the contact area and mixing time of the two wastewaters in the impact zone are strengthened. The pH test port in the lower channel of the impact zone detects the wastewater pH in real time through the pH detector and adjusts the pH through the external pH regulator of the impact zone feed port to achieve the acid-base balance effect. At the same time, the turbine and transmission device between the two partitions at the bottom of the impact zone drive the stirring paddle to stir under the drive of wastewater. The transmission device is a worm-worm meshing transmission. The connecting rod of the stirring paddle is a hollow tube, which can be freely disassembled for easy installation and replacement. Circular holes are provided on the hollow tube. The shape and arrangement of the circular holes can be adjusted according to actual conditions. When the stirring paddle is stirring, the wastewater can form a suction phenomenon through the circular holes of the hollow tube to further promote oxidation and disinfection. Finally, the wastewater disinfection process is completed and discharged from the outlet.

Claims

1. A frequency conversion regulation type dynamic impingement flow treatment device for acid and alkali wastewater, It is characterized in that The device is composed of three parts from top to bottom: a decontamination area, an impact area, and an oxidation and disinfection area; the overall shell of the device is a vertical cylindrical body, the upper part is an open decontamination area for filtering impurities in wastewater, and the lower part is equipped with an elliptical head; The impurity removal zone is a symmetrical structure for filtering acidic wastewater and alkaline wastewater respectively. The impurity removal zone includes two vertically placed filter screens, and the aperture of the filter screen one is larger than the aperture of the filter screen two. The filtered acidic wastewater and alkaline wastewater are subjected to severe impact in the impact zone through the impact zone feed pipe and the tapered nozzle under the action of the water pump to perform an acid-base neutralization reaction. The impact zone feed pipes are coaxially opposed and have the same diameter; both ends of the impact zone feed pipe are internally threaded, and one end is equipped with a tapered nozzle, and the other end is connected to the impurity removal zone and a water pump, and the water pump is controlled by a frequency converter to dynamically change the periodic flow of the tapered nozzle inlet; the ratio between the spacing of the opposed tapered nozzles and the diameter of the tapered nozzle can be freely adjusted according to actual conditions and needs; a pH detection port is set at the conical straight channel opening at the bottom of the impact zone, and a pH monitor for real-time monitoring of the pH of the wastewater is installed to detect the wastewater, and at the same time, the amount of the pH regulator external to the feed pipe is adjusted in real time; two partitions are provided between the impact zone and the oxidation and disinfection zone, and a turbine and a transmission device are installed between the two partitions; the lower channel of the impact zone increases the flow rate of the wastewater to drive the turbine; The oxidation disinfection zone is connected with the oxidation disinfectant box through the oxidation disinfectant feed port. The oxidation disinfection zone is provided with a stirring paddle. The stirring paddle stirs the wastewater under the drive of the transmission device. The connecting rod of the stirring paddle is a detachable structure. At the same time, the connecting rod is a hollow tube. The tube body is provided with circular holes. The size, shape and arrangement of the circular holes are adjusted according to actual conditions. When the stirring paddle stirs, a suction phenomenon is formed to further accelerate the oxidation disinfection process. The transmission device is a worm-worm meshing transmission.

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