Heating disinfection method and device for microalgae cultivating water

A technology of microalgae cultivation and disinfection method, which is applied in the direction of heating water/sewage treatment, seawater treatment, non-polluted water treatment, etc., and can solve the problems of complex operation of equipment, lack of automatic control, effective disinfection temperature, disinfection duration and outlet water temperature Unable to accurately control and other problems, to achieve the effect of water outlet temperature

Inactive Publication Date: 2012-09-19
山东安源种业科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The existing technology has the following problems to be solved. First, the integration of heating and disinfection equipment is not high, and automatic control is not realized, which makes the operation of the whole equipment complicated; second, the heat exchange efficiency is low and energy consumption is still high; third, effective disinfection Temperature, disinfection duration and outlet water temperature cannot be precisely controlled

Method used

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  • Heating disinfection method and device for microalgae cultivating water
  • Heating disinfection method and device for microalgae cultivating water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Such as figure 1 As shown, the heating and disinfection equipment for microalgae cultivation water of the present invention includes a water inlet pump 1, a flow regulating valve 2, a heat exchanger 3 and an electric heating furnace 4, and the outlet of the water inlet pump 1 passes through the first pipeline 51 to exchange heat with the heat exchanger 3 as a medium The inlet is connected, the flow regulating valve 2 is installed on the first pipeline 51, the outlet of the heat exchange medium of the heat exchanger 3 is connected with the inlet of the electric heating furnace 4 through the second pipeline 52, and the outlet of the electric heating furnace 4 is connected with the heat exchanger through the third pipeline 53 3. The material inlets are connected. The electric heating furnace 4 is provided with an electric heating rod group 6 composed of a plurality of electric heating rods. The material outlet of the heat exchanger 3 leads to the outside through the fourth ...

Embodiment 2

[0033] Taking Chlorella as an example, the cells of Chlorella are spherical or oval, with a diameter of 3 to 10 microns, and the diameter can reach 23 microns during the reproductive period. Chlorella can adapt to a wide range of salinity during the cultivation process. It can grow normally in the range of 0-36 mass‰, and can reproduce and grow rapidly in the temperature range of 10-36°C. The optimum growth temperature is 25 ~30°C, the suitable pH is 7.5~8.5, and under the optimum temperature conditions, the optimum light intensity is 10000lx.

[0034]By setting the parameters of the equipment in Example 1, the water for microalgae cultivation was heated to 94° C., and the water for microalgae cultivation was continuously sterilized in this temperature range for 25 seconds, and the sterilized water for microalgae cultivation was obtained after heat exchange and cooling. The water for cultivation is used in conjunction with photobioreactors. Under the conditions of 25-30°C, pH ...

Embodiment 3

[0037] Taking Isochrysis globosa as an example, Isochrysis globosa is a single-celled individual with naked cells. The salinity range that Isoflagellates adapts to is between 14 and 40 mass‰, and the optimum salinity is 30‰ , the optimum temperature range is between 20-25°C, the optimum light intensity is 1500-3000 meter candles, and the optimum pH is 8.

[0038] By setting the parameters of the equipment in Example 1, the water for microalgae cultivation was heated to 95°C, and the water for microalgae cultivation was continuously sterilized in this temperature range for 23 seconds, and the sterilized water for microalgae cultivation was obtained after heat exchange and cooling. The water for cultivation is used in conjunction with a photobioreactor. Under the conditions of 20-25°C, pH 8.0, light intensity of 2000 meter candles and controlled salinity of 14-40 mass‰, microalgae are conventionally cultured continuously for 3 months, 1000 The contamination rate of protozoa and ...

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Abstract

The invention relates to a heating disinfection method and a device for microalgae cultivating water and relates to a method and a device for treating water through heating. The heating disinfection method includes that the microalgae cultivating water is heated to 94 DEG C to 96 DEG C, the microalgae cultivating water is subjected to a continuous disinfection at the temperature between 94 DEG C to 96 DEG C for 20 seconds to 25 seconds, and the disinfected microalgae cultivating water can be used after being cooled. The device for implementing the method comprises a water inlet pump, a flow control valve, a heat exchanger and an electric heating furnace, wherein an outlet of the water inlet pump is connected with a heat exchange medium inlet of the heat exchanger through a first pipeline, a heat exchange medium outlet of the heat exchanger is connected with an inlet of the electric heating furnace through a second pipeline, an outlet of the electric heating furnace is connected with a material inlet of the heat exchanger through a third pipeline, and a material outlet of the heat exchanger leads to the outside through a fourth pipeline. The heating disinfection device further comprises a programmable logic controller (PLC) and a first to a fourth temperature sensor. The method is simple in steps and good in disinfection effects. The device can achieve an automation accurate control of the method.

Description

technical field [0001] The invention relates to a method and equipment for treating water by heating, in particular to a method and equipment for heating and disinfecting water for microalgae cultivation. Background technique [0002] Microalgae is an indispensable bait in the production process of aquaculture animal seed. In the process of microalgae cultivation, protozoa and bacterial contamination caused by incomplete disinfection of microalgae cultivation water are the main reasons for the failure of microalgae cultivation. The culture water is not disinfected, and the pollution rate is 100%. At present, there are many disinfection methods commonly used for microalgae cultivation water, such as acid-base disinfection, ultraviolet radiation disinfection, filtration removal disinfection, sodium hypochlorite disinfection and so on. The most commonly used method is sodium hypochlorite disinfection. According to the quality of sodium hypochlorite products, the content of na...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/02C02F103/02C02F103/08
Inventor 梁文恒孙为明卢俊声邹士刚刘永旗
Owner 山东安源种业科技有限公司
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