Device and method for killing tiny organisms in water body by using hydrodynamic cavitation and strengthened ozone

A hydraulic cavitation and ozone generation technology, which is applied in the field of water treatment, can solve the problems of low ozone utilization rate and achieve the effects of high ozone utilization rate, easy operation, and low investment and operation costs

Inactive Publication Date: 2012-02-15
NANJING INST OF ENVIRONMENTAL SCI MINIST OF ECOLOGY & ENVIRONMENT OF THE PEOPLES REPUBLIC OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Aiming at the low utilization rate of ozone in the traditional bubbling ozone method for sewage treatment and sterilization, the present invention provides a device and method for killing ti...

Method used

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  • Device and method for killing tiny organisms in water body by using hydrodynamic cavitation and strengthened ozone
  • Device and method for killing tiny organisms in water body by using hydrodynamic cavitation and strengthened ozone
  • Device and method for killing tiny organisms in water body by using hydrodynamic cavitation and strengthened ozone

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Embodiment 1

[0032] In this embodiment, a device and method for using hydraulic cavitation and its enhanced ozone to kill tiny organisms in water bodies, the hydraulic cavitation generator 2 contained in it adopts the following methods: figure 2The structural form of the single-hole orifice plate 201, the hole diameter is selected as 12 mm (see Table 1 for parameters), and the material of the water tank 5 is stainless steel. Pour 1.75 L of algae water into the water tank 5 of the hydraulic cavitation device, the initial chlorophyll a and Microcystis aeruginosa algal cell numbers were 30 μg / L, 1.8×10 6 individual / mL. Cycle treatment at 20 °C for 20 minutes, and measure the concentration of chlorophyll a and Microcystis aeruginosa algae cell number after treatment. Under negative pressure (water absorption) hydraulic cavitation conditions, the removal rates of chlorophyll a and Microcystis algae cell numbers were 14.7% and 15.1%, respectively. The treatment time was extended to 60 minutes...

Embodiment 2

[0036] In this embodiment, a device and method for using hydraulic cavitation and its enhanced ozone to kill tiny organisms in water bodies, the hydraulic cavitation generator 2 contained in it adopts the following methods: Figure 4 The structural form of the single-hole orifice plate 203 with a transverse blade, the aperture is 6 mm, and 11 pieces of razor blades are evenly arranged and welded on the hole surface, and the distance between the blades is 0.5mm (see Table 2 for parameters). The orifice plate is installed on the The water inlet end of the circulating water pump 1; the material of the water tank 5 is engineering plastics. Pour 2.5 L of algae water into the water tank of the hydraulic cavitation device, and the number of cells of Microcystis aeruginosa is 3.5×10 6 individual / mL. The algal water was circulated at 25 °C for 20 minutes, and the concentrations of chlorophyll a and Microcystis aeruginosa algal cells after treatment were measured. Under negative press...

Embodiment 3

[0039] In this embodiment, a device and method for using hydraulic cavitation and its enhanced ozone to kill tiny organisms in a water body, the hydraulic cavitation generator contained in it adopts such as figure 2 single-hole orifice plate 201 with a pore diameter of 6 mm (see Table 1 for parameters) and image 3 The number of holes is 9, and the hole diameter is 2 mm. The combined structure of the porous orifice plate 202 (see Table 3 for parameters). The distance between the two orifice plates is 30 mm. This combined orifice plate is installed at the water inlet of the circulating water pump 1. Pour 2.5 L of algae water into the water tank 5 of the hydraulic cavitation device, and the number of cells of Microcystis aeruginosa is 3.5×10 6 individual / mL. The algal water was circulated at 25 °C for 20 minutes, and the concentrations of chlorophyll a and Microcystis aeruginosa algal cells after treatment were measured. Under negative pressure (water absorption) hydraulic ca...

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Abstract

The invention discloses a device and a method for killing tiny organisms in a water body by using hydrodynamic cavitation and strengthened ozone, which belong to the technical field of water treatment. The device comprises a circulating water pump, an ozone generation system, a temperature detection and circulating cooling system and a water tank, wherein the temperature detection and circulating cooling system is fixedly arranged on the top of the water tank; the circulating water pump is fixedly connected with the water inlet end of the circulating water pump by an inlet flange; the lower end of a reverse L-shaped pipeline on the right side of the water tank is fixedly connected with a water outlet end by an outlet flange; a hydrodynamic cavitation generator is also arranged at the water inlet end of the circulating water pump or on the water tank; and the ozone generation system is fixedly connected with the lower end pipeline of the circulating water pump by a pipeline. In order to solve the problem of low ozone utilization rate in the process of treating, sterilizing and disinfecting sewage by the traditional bubbling ozone method, the tiny organisms in the water body are killed by the cavitation effect and the ozone oxidization strengthening capability of the hydrodynamic cavitation, so that the ozone utilization rate is increased.

Description

technical field [0001] The invention belongs to the field of water treatment technology, a device and method for killing and inhibiting tiny organisms in water bodies by using physical and chemical technology, and particularly relates to a method for removing Microcystis in water bodies and degrading Microcystis by using hydraulic cavitation and enhanced ozone technology way of toxins. Background technique [0002] Lakes (reservoirs) are important natural resources. With the rapid development of industrial and agricultural production and the expansion of cities in my country, a large amount of industrial, domestic and agricultural non-point source sewage is discharged into the water body, which makes the eutrophication of the water body more and more serious. Bloom is a manifestation of serious pollution of the water environment, and the occurrence of algal blooms has further aggravated water pollution. In the past 20 years, algae bloom disasters in lakes and other water bod...

Claims

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Application Information

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IPC IPC(8): C02F1/50C02F1/78
Inventor 武志林王伟民张永春沈海风贝恩德·奥朱斯卡
Owner NANJING INST OF ENVIRONMENTAL SCI MINIST OF ECOLOGY & ENVIRONMENT OF THE PEOPLES REPUBLIC OF CHINA
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