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A high-efficiency energy-saving temperature-controlled water treatment system and method for treating water

A warm water treatment, high-efficiency and energy-saving technology, applied in the field of water treatment, can solve the problems that limit the practical application of electrochemical oxidation degradation technology, difficult to apply in the field of sewage treatment, and easy evaporation of organic matter, so as to improve the applicable environment and service life, and reduce degradation Low energy consumption and low cost

Active Publication Date: 2022-07-22
NANJING DAIMONTE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Then the sewage in actual industrial production is treated at normal temperature. The main reasons are: 1. At high temperature, the organic matter in the water is easy to evaporate and volatilize, polluting the atmosphere; 2. In industrial production, heating and insulating water needs to consume a lot of energy, which is not worth the candle
[0004] Nowadays, the application of industrial waste heat to heat water bodies is a very mature technology, but it is difficult to apply it to the field of sewage treatment. The main reason is that the sewage treatment system requires sewage circulation, which will quickly cool down the water body and affect the degradation effect.
[0005] Therefore, the existing electrochemical water treatment system still has the defects of high cost, high energy consumption, and low degradation efficiency, which limits the practical application of electrochemical oxidation degradation technology in water treatment.

Method used

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  • A high-efficiency energy-saving temperature-controlled water treatment system and method for treating water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0079] This embodiment selects boron-doped diamond electrodes as cathode and anode, and its preparation method is as follows:

[0080] Firstly, anisotropic etching was performed on the surface of the polysilicon substrate material, and 10M KOH solution was used as the anisotropic etching solution, and the polycrystalline silicon substrate material was soaked in the anisotropic etching solution at 80°C for 60min to complete the etching. Then, it is cleaned and dried to obtain step-type polysilicon with high specific surface area.

[0081] The etched polycrystalline silicon is placed in a suspension of nanocrystalline and microcrystalline diamond mixed particles, and ultrasonically oscillated for 30 minutes to obtain a polycrystalline silicon substrate with diamond grains attached to the surface.

[0082] Put the substrate into a chemical vapor deposition furnace, keep the distance between the hot wire and the surface of the substrate at 9 mm, adjust the hydrogen gas flow rate to ...

Embodiment 2

[0090] The other conditions in Example 2 are the same as those in Example 1, except that the polysilicon substrate is etched by the isotropic etching method. The surface of the polysilicon substrate material was first etched isotropically to analyze pure HF and HNO 3 The mixed solution is used as an isotropic etching solution, and the mixed volume ratio is HF:HNO 3 = 3:1. The polysilicon substrate material is placed in an isotropic etching solution, soaked at room temperature for 2 minutes to complete the etching, then cleaned and dried to obtain a pit-microporous composite type polysilicon with a high specific surface area.

[0091] The subsequent preparation process is the same as that of Example 1, and the electrode properties are shown in Table 2:

[0092] Table 2 Electrochemical properties of BDD electrodes obtained in Example 2

[0093] Oxygen evolution potential / V 2.37 Hydrogen evolution potential / V -0.55 Potential window / V 2.92 Background ...

Embodiment 3

[0097] In Example 3, an anisotropic etching method is used to etch a stepped polysilicon substrate, and then an isotropic etching method is used. The etching parameters of the etching solution are the same as those in Examples 1 and 2.

[0098] Subsequently, a BDD electrode was prepared, and the preparation method was the same as that of Example 1. The electrode properties are shown in Table 3:

[0099] Table 3 Electrochemical properties of BDD electrodes obtained in Example 3

[0100] Oxygen evolution potential / V 2.52 Hydrogen evolution potential / V -0.63 Potential window / V 3.15 Background current / μA / cm 2

12.62

[0101] It can be seen from the above data that the anisotropic etching method and the isotropic etching of the polysilicon substrate have excellent electrochemical performance and good electrode reversibility.

[0102] A certain dye wastewater was degraded by the above water treatment system. In the electrochemical degradation mo...

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Abstract

The invention discloses a high-efficiency, energy-saving and temperature-controlled water treatment system and a method for treating water, including a water pressurization module, a particle filtering module, an electrochemical degradation module, a microbial desalination module, a phase-change heat storage module, a condensation reflux module, Solar module; the phase-change heat storage module includes a phase-change heat storage panel, the phase-change heat storage panel is used as the wall of the electrochemical degradation module, and the water temperature in the electrochemical degradation module is maintained at 40°C-80°C, so It is described that the condensation reflux module is arranged at the exhaust gas outlet of the electrochemical degradation module, and the water vapor and organic volatiles in the exhaust gas are condensed and refluxed to the electrochemical degradation module; the electrochemical degradation module includes an anode and a cathode, and the anode and the cathode pass through The wire is connected with the DC power supply, and the DC power supply is connected with the solar power generation module; the system energy provided by the present invention does not need to consume external electric energy, and can maintain the electrochemical degradation module and the microbial desalination module at the optimum temperature.

Description

technical field [0001] The invention relates to a high-efficiency energy-saving temperature-controlling water treatment system and a water treatment method thereof, belonging to the technical field of water treatment. Background technique [0002] Electrochemical advanced oxidation technology (EAOPs) is a process in which an electrochemical reaction occurs directly on the surface of a catalytically active electrode under the action of an electric field, or an active group dominated by hydroxyl radicals is generated to oxidize organic matter in wastewater. Hydroxyl radicals have a high redox potential, and their oxidizing properties are second only to fluorine, which can directly oxidize organic pollutants in water into non-toxic small molecular substances or even CO 2 and H 2 O, environmentally friendly and clean degradation of organic wastewater. [0003] During the degradation process, an appropriate increase in the water temperature can increase the molecular motion rat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14C02F1/72C02F1/461
CPCC02F9/00C02F1/46109C02F1/4672C02F1/001C02F2001/46147C02F3/00C02F2201/009
Inventor 魏秋平周科朝马莉王宝峰王立峰施海平李志伸
Owner NANJING DAIMONTE TECH CO LTD
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