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Efficient energy-saving temperature control water treatment system and water treatment method thereof

A warm water treatment, high-efficiency and energy-saving technology, applied in the field of water treatment, can solve the problems of rapid cooling of water bodies, high energy consumption, and limiting the practical application of electrochemical oxidative degradation technology.

Active Publication Date: 2020-09-18
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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  • Efficient energy-saving temperature control water treatment system and water treatment method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0079] In this embodiment, a boron-doped diamond electrode is selected as the cathode and anode, and its preparation method is as follows:

[0080] First perform anisotropic etching on the surface of the polysilicon substrate material, use 10M KOH solution as an anisotropic etching solution, place the polysilicon substrate material in the anisotropic etching solution at 80°C for 60 minutes to complete the etching, Then wash and dry to obtain step-shaped polysilicon with high specific surface area.

[0081] The etched polysilicon was placed in a suspension of nanocrystalline and microcrystalline diamond mixed particles, and ultrasonically oscillated for 30 minutes to obtain a polysilicon 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 substrate surface at 9 mm, adjust the flow rate of hydrogen gas to maintain 97 sccm during the heating process, and feed metha...

Embodiment 2

[0090] Embodiment 2 is the same as that in Embodiment 1 except that the polysilicon substrate is etched by an isotropic etching method. The surface of the polysilicon substrate material is isotropically etched first 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, and then cleaned and dried to obtain pitted microporous composite polysilicon with high specific surface area.

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

[0092] The electrochemical performance of the BDD electrode gained in table 2 embodiment 2

[0093] Oxygen evolution potential / V 2.37 Hydrogen evolution potential / V -0.55 Potential window / V 2.92 Background current / μA / cm 2

...

Embodiment 3

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

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

[0099] The electrochemical performance of the BDD electrode gained in table 3 embodiment 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 combined with isotropic etching of the polysilicon substrate has excellent electrochemical performance and good reversibility of the electrode.

[0102] A certain dye wastewater was degraded by the above-mentioned water treatment system...

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Abstract

The invention discloses an efficient energy-saving temperature control water treatment system and a water treatment method thereof. The efficient energy-saving temperature control water treatment system comprises a water pressurization module, a particle filtration module, an electrochemical degradation module, a microbial desalination module, a phase change heat storage module, a condensation reflux module and a solar module; the phase change heat storage module comprises a phase change heat storage plate; the phase change heat storage plate is used as a wall body of the electrochemical degradation module; the temperature of water in the electrochemical degradation module is maintained to be 40-80 DEG C; and the condensation reflux module is arranged at the tail gas outlet of the electrochemical degradation module and is used for condensing and refluxing water vapor and organic volatile matters in tail gas to the electrochemical degradation module; the electrochemical degradation module comprises an anode and a cathode, the anode and the cathode are connected with a direct-current power supply through wires, and the direct-current power supply is connected with a solar power generation module. The system is provided with a power supply and does not need to consume external electric energy, and the electrochemical degradation module and the microbial desalination module can bemaintained at the most suitable 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 the surface of a catalytically active electrode directly undergoes an electrochemical reaction or generates active groups mainly composed of hydroxyl radicals to oxidize organic matter in wastewater under the action of an electric field. Hydroxyl radicals have a high redox potential, second only to fluorine in oxidation, and can directly oxidize organic pollutants in water into non-toxic small molecules and even CO 2 and H 2 O, environmentally friendly and clean degradation of organic wastewater. [0003] During the degradation process, appropriately increasing the water temperature can increase the molecular movement rate, accelerate the reaction speed, ...

Claims

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Application Information

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Patent Type & Authority Applications(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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