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Electrochemical oxidation system capable of automatically inhibiting and removing scale and treatment process

An oxidation system, electrochemical technology, applied in electrochemical water/sewage treatment, special treatment targets, water/sewage treatment, etc. Inhibit the scaling rate and other problems to achieve the effect of improving the efficiency of oxidation treatment, reducing the risk of misoperation, and improving the effect of operation and maintenance

Pending Publication Date: 2021-10-08
ZHEJIANG ZHENENG TECHN RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Not only that, regular pickling cannot fundamentally prevent the continuous formation of calcium and magnesium scale, and can only be used as an emergency measure to deal with the generated calcium and magnesium scale
Due to the different hardness of the influent with the same pH, the fouling rate in the electrochemical oxidation reactor varies greatly, and it is difficult to suppress the fouling rate during operation by consistent means

Method used

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  • Electrochemical oxidation system capable of automatically inhibiting and removing scale and treatment process

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Effect test

Embodiment 1

[0036] Embodiment 1 of the present application provides a method such as figure 1 The automatic scale suppression and descaling electrochemical oxidation system shown:

[0037]It is equipped with a waste water pool 1, an inlet pump 2, a first valve 3, an electrochemical oxidation reactor 4, and a second valve 5; it is also equipped with a voltage feedback automatic scale suppression system 6 and a voltage feedback automatic pickling system 7; Scale system 6 includes acid storage tank 8, electromagnetic metering pump 9, controller 10, voltmeter 11, flow meter 12 and supporting pipelines; voltage feedback automatic pickling system 7 includes pickling tank 13, pickling pump 14 and supporting pipes road; the outlet of the waste water pool 1 is connected to one end of the water inlet pump 2, and the other end of the water inlet pump 2 is connected to the electrochemical oxidation reactor 4 through the water inlet pipe, and the water inlet pipe between the water inlet pump 2 and the...

Embodiment 2

[0039] On the basis of Embodiment 1, Embodiment 2 of this application provides the treatment process of the automatic scale suppression and descaling electrochemical oxidation system in a certain coal-fired power plant in Embodiment 1:

[0040] A coal-fired power plant uses electrochemical oxidation to treat ammonia nitrogen wastewater in the plant, and oxidizes ammonia nitrogen pollutants into nitrogen. The hardness of the treated ammonia nitrogen wastewater is relatively high, the concentration of calcium ions fluctuates in the range of 100mg / L-1000mg / L, and the concentration of magnesium ions fluctuates in the range of 30mg / L-300mg / L. In the original electrochemical oxidation process, adjust the pH of the influent to 5.5-6.0, and control the current density of the plate to 40-45A / m 2 , the flow rate is 30t / h. The shell of the electrochemical oxidation reactor is made of transparent plexiglass, and the fouling on the electrode surface can be directly observed. During the c...

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Abstract

The invention relates to an electrochemical oxidation system capable of automatically inhibiting and removing scale. The electrochemical oxidation system comprises a wastewater pool, a water inlet pump, a first valve, an electrochemical oxidation reactor and a second valve, and is further provided with a voltage feedback automatic scale inhibiting system and a voltage feedback automatic pickling system. The system has the beneficial effects that the oxidation treatment efficiency of pollutants in wastewater can be improved; the misoperation risk is reduced, the labor cost is reduced, and the operation and maintenance effect and the operation and maintenance efficiency of the system are improved; on the premise that the low scaling rate is ensured, the use amount of an acid agent is reduced to the maximum extent, the agent cost is reduced, and meanwhile, remarkable environmental benefits are achieved; the system is suitable for electrochemical oxidation treatment of wastewater of different fields, different types and different water qualities, and can cope with water quality fluctuation change in a long-term continuous treatment process; and the equipment adopted by the invention is reliable, safe and easy to maintain, can be used as a new system for complete production, and also can be upgraded and reformed on the basis of an old system.

Description

technical field [0001] The invention belongs to the technical field of environmental protection water treatment, and in particular relates to an electrochemical oxidation system and a treatment process for realizing scale inhibition and descaling of electrodes through voltage feedback. Background technique [0002] Electrochemical oxidation wastewater treatment technology means that under the action of an electric field, an electron transfer reaction occurs on the electrode surface to generate oxidative active substances, so that toxic and harmful substances in wastewater are oxidized and degraded, and the degradation and removal of ammonia nitrogen and various organic pollutants are realized. This technology has the advantages of low energy consumption, high efficiency, mild reaction conditions, simple equipment, small footprint, and no need for additional chemicals. It is widely used in landfill leachate, power plant wastewater, medical wastewater, municipal sewage, printin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/46C02F1/461
CPCC02F1/4602C02F1/4672C02F1/008C02F2201/46105C02F2201/46135C02F2201/46145C02F2303/14C02F2209/06
Inventor 徐浩然冯向东鲁卫哲李松松陈彪余一凡
Owner ZHEJIANG ZHENENG TECHN RES INST
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