A three-stage hydraulic cavitation treatment system for organic wastewater
A treatment system and organic wastewater technology, applied in the direction of water/sewage multi-stage treatment, water/sludge/sewage treatment, water pollutants, etc., can solve the problems of small treatment volume and low efficiency, achieve high degradation rate, improve The effect of degradation rate
Active Publication Date: 2021-02-09
SHANDONG UNIV
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Problems solved by technology
[0006] However, the hydraulic cavitation device used in the above technology basically adopts the existing Venturi tube, cavitation nozzle and orifice structure, which has the problems of small processing capacity and low efficiency.
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[0027] The organic wastewater three-stage hydraulic cavitation treatment system of the present invention, such as figure 1 As shown, it includes a precipitant tank 1 , a coagulation tank 2 , a sedimentation tank 4 , a rotary hydraulic cavitator 7 , a cavitation jet generator 9 and an ultrasonic cavitator 11 connected in sequence. A valve 3 is arranged on the connecting pipeline between the sedimentation tank 1 and the coagulation tank 2, and a water pump 5 is arranged on the connecting pipeline between the sedimentation tank 4 and the rotary hydraulic cavitator 7, and the rotary hydraulic cavitator 7 is also connected with the Fen Reagent pool 12 is connected. The Fenton's reagent in Fenton's reagent pool 12 is H 2 o 2 and FeSO 4 The mixture, specifically the concentration of 200mg / L H 2 o 2 solution and FeSO with a concentration of 20mg / L 4 The solution is a mixture of 2:1 by volume.
[0028] The precipitant is stored in the precipitant pool 1, and the precipitant pool...
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Abstract
A three-stage hydraulic cavitation treatment system for organic wastewater, including a precipitant tank, a coagulation tank, a sedimentation tank, a rotary hydraulic cavitator, a cavitation jet generator, and an ultrasonic cavitator connected in sequence; the sedimentation tank and the rotary hydraulic cavitation A water pump is arranged on the connecting pipeline between the carburetors, the rotary hydraulic cavitator is also connected with the Fenton reagent pool, and a water pump is arranged on the connecting pipeline between the rotary hydraulic cavitator and the cavitation jet generator. The mechanism of rotating cavitation is shear cavitation. The cavitation jet uses a special collision wall to generate a region below the saturated vapor pressure to generate a cavitation jet. Ultrasonic cavitation is a cavitation phenomenon generated by ultrasonic waves. The present invention adopts the combination of Fenton process and cavitation technology to treat organic wastewater, which not only improves the degradation of organic pollutants, but also reduces the time for degrading pollutants, and fully utilizes the two advanced technologies of Fenton process and cavitation technology. The advantages of oxidation technology make the degradation rate of organic wastewater reach the highest.
Description
technical field [0001] The invention relates to a method and a device for degrading organic wastewater, belonging to the technical field of organic wastewater treatment. Background technique [0002] Hydrodynamic cavitation technology provides an energy-saving and efficient method to oxidize pollutants without additional reactants, without causing secondary pollution to the ecological environment, and has great potential in treating low-concentration and high-concentration pollutants. [0003] The cavitation phenomenon is that when the pressure drops below the saturated vapor pressure, the gas dissolved in the fluid will be released, and at the same time the fluid will vaporize to generate a large number of bubbles. When the cavitation bubbles flow further with the fluid, the surrounding pressure will increase. , the volume will shrink sharply until it collapses, and the extremely high pressure and temperature will be generated at the moment of collapse, which will break the...
Claims
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IPC IPC(8): C02F9/04C02F101/30
Inventor 陈颂英侯正金孙逊
Owner SHANDONG UNIV