Novel treatment device for high-salt-content degradation-resistant organic wastewater

A technology for organic wastewater treatment and refractory degradation. It is used in water/sewage treatment, heating water/sewage treatment, oxidized water/sewage treatment, etc. It can solve the problem that the concentration of brine cannot be too high, and make the reaction process easier to control and improve energy utilization. Efficiency, the effect of reducing energy consumption

Active Publication Date: 2015-01-07
NANJING UNIV
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Problems solved by technology

However, the concentration of brine in conventional treatment methods cannot be too high, and it is urgent to develop a process technology for treating higher concentration of high-salt wastewater

Method used

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  • Novel treatment device for high-salt-content degradation-resistant organic wastewater
  • Novel treatment device for high-salt-content degradation-resistant organic wastewater

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Embodiment approach

[0028] Device embodiment of the present invention is as follows:

[0029]The sewage first enters the wastewater regulating tank 1 to adjust the pH, then is stirred and aerated by the stirring device 2 and mixed evenly, and then enters the gas-liquid reactor 4 under the action of the pump 3, and the high-voltage pulse power supply 7 discharges through the electrode plate 5 to generate a large amount of The high-energy electrons collide inelastically with the refractory substances contained in the waste water in the gas-liquid reactor 4, and the energy is converted into the internal energy of the ground state molecules, and a series of processes such as excitation, dissociation and ionization occur, making the waste water in an activated state. On the one hand, the molecular bonds of wastewater are opened to generate some elemental atoms or single-atom molecules; on the other hand, a large number of active groups such as free oxygen, free radicals and ozone are generated. The ch...

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Abstract

The invention discloses a novel treatment device for high-salt-content degradation-resistant organic wastewater. The device comprises two parts, namely, plasma sewage treatment and multi-stage flash desalting. The device disclosed by the invention is capable of effectively treating wastewater containing degradation-resistant organisms and high-concentration salt generated in the conventional chemical industry, particularly the fine chemical engineering, has the advantages of high treatment efficiency, low equipment cost, low operation expense, stable operation, and the like, further solves the problems that the heat generated in the process that wastewater is treated with plasma is lost and the later high-salt wastewater is hard to chemically treat effectively, and has a good application prospect and very high application values.

Description

Technical field: [0001] The invention belongs to the field of pretreatment of chemical waste water, in particular to a device for treating high-salt refractory organic waste water by using low-temperature plasma and multi-stage flash evaporation. Background technique: [0002] High-salt wastewater refers to wastewater containing organic matter and at least a mass fraction of TDS (Total Dissolved Solid) ≥ 3.5%, including high-salt domestic wastewater and high-salt industrial wastewater. In addition to organic pollutants, these wastewaters also contain a large amount of inorganic salts, such as Cl - , SO 4 2- , Na + , Ca 2+ Plasma. The total amount of high-salt organic wastewater is huge and tends to increase year by year. If it is not treated before discharge, the high concentration of soluble inorganic salts and refractory toxic organic substances in the wastewater will cause serious environmental pollution. Groundwater wreaks havoc. However, the concentration of brin...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/12
CPCC02F1/048C02F1/06C02F1/48C02F1/72C02F1/78C02F9/00
Inventor 孙亚兵李舜斌蒋浩辛路
Owner NANJING UNIV
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