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Wastewater treatment method and device based on hydrodynamic cavitation

A technology for hydraulic cavitation and wastewater treatment, which is applied in water/sewage treatment, special compound water treatment, oxidized water/sewage treatment, etc. Efficiency and safety improvement

Active Publication Date: 2016-03-30
ZHONGBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] However, the current conventional hydraulic cavitation reactors only have a single Venturi tube or orifice cavitation device. This simple cavitation structure produces less OH and has a lower cavitation effect.

Method used

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  • Wastewater treatment method and device based on hydrodynamic cavitation
  • Wastewater treatment method and device based on hydrodynamic cavitation
  • Wastewater treatment method and device based on hydrodynamic cavitation

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Embodiment 1

[0039] The structure of the integrated hydraulic cavitation device for wastewater treatment is as follows: figure 1 As shown, it consists of wastewater pretreatment system, water supply system, hydraulic cavitation system and control system.

[0040] The wastewater pretreatment system includes a wastewater coagulation tank 2 with a stirring device 3 for pretreatment of wastewater, and the wastewater coagulation tank is externally connected to the wastewater inlet 1; A coagulant dispensing tank 4 for adding coagulant to the wastewater coagulation tank; a sedimentation tank 5 located below the wastewater coagulation tank, connected to the wastewater coagulation tank 2 by a valve 17 and a pipeline, below the sedimentation tank 5 A sludge discharge port 7 for discharging sludge is provided, and a pretreated waste water outlet 6 is provided above to connect to the water supply system. The waste water and coagulant are pretreated in the waste water coagulation tank 2, and the waste...

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Abstract

The invention discloses a wastewater treatment method based on hydrodynamic cavitation. A coagulant is added to wastewater firstly so that suspended particles in wastewater can be separated through precipitation, and then jet flow hydrodynamic cavitation treatment, rotational flow hydrodynamic cavitation treatment and perforated plate hydrodynamic cavitation treatment are conducted on wastewater in sequence cyclically while an oxidizing agent is added to wastewater. According to the method, by means of the three-level cavitation effect achieved through first-level jet flow, second-level rotational flow and third-level flow limiting, instantaneous high temperature and high pressure are generated for direct organic matter degradation, harmless degradation of organic pollutants hard to degrade in the conventional way is achieved, and the method is suitable for treatment of organic wastewater hard to degrade with small volume and high concentration in any occasions.

Description

technical field [0001] The invention belongs to the technical field of wastewater treatment, and relates to a method and a device for treating wastewater by using hydraulic cavitation technology, in particular to a method and a device for treating organic wastewater with small water volume, high concentration and refractory degradation. Background technique [0002] Water pollution is the biggest problem in the current water environment, especially the persistent refractory organic pollutants in the water environment are widely distributed, stable in nature, and more harmful. For example, polycyclic aromatic hydrocarbons undergo a series of complex processes in the atmosphere or water. The reaction can generate secondary pollutants with stronger carcinogenic activity or mutagenicity, posing a greater threat to human health. Advanced oxidation technology is an effective way to effectively treat such persistent and refractory organic pollutants. [0003] At present, the advan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04
CPCC02F1/52C02F1/72C02F1/722C02F1/727C02F1/76C02F1/78C02F2101/30C02F2305/02C02F2305/026
Inventor 晋日亚乔怡娜贺增弟孔维甸杨思静师淑婷
Owner ZHONGBEI UNIV
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