SU680695A1 - Cultivator for cultivating chlorella - Google Patents

Description

The invention relates to agriculture, namely to devices for the production of Chlorella and other microalgae, and can also be used as an inoculum in wastewater treatment.

Cultivators for growing chlorella are known, which contain a container, devices for al-stirring a suspension and for its suspension with air and carbon dioxide l.

The disadvantage of these cultivators is the low cultivation efficiency and high consumption of carbon dioxide.

An open-type cylindrical reactor is also known for the cultivation of microalgae with a conical bottom with a central outflow opening, a gas hood and a stirrer. In the center of the tank is installed ring horizontal. a partition with the possibility of adjusting its position on the viewport, and

under it is installed a solid partition forming a settling chamber 2 with the bottom of the reactor,

The disadvantage of such a reactor is the low cultivation efficiency and design complexity due to the presence of the agitator and the necessary drive for it.

The object of the invention is to increase the efficiency of cultivation and to simplify the structure by excluding the agitator from it.

This is achieved by the fact that the cultivator for growing chlorella is equipped with a drain pipe installed in the center of the bone, around which there are two caps that are coccentrically holding each other, the bottom of which is connected to the drain pipe, and the edges form steps parallel to the anu capacity, and anish the first cap is connected to the carbon dioxide supply line, and the second to the air supply line. At the same time, the edges of the caps and the drain pipe are

they are combed, and the caps themselves are made of a photoelectric material.

Such an embodiment of the device allows constant active circulation and stirring of the suspension, as well as saturating it under pressure with carbon dioxide and air,

FIG. Figure 1 shows a cultivator for growing Chlorella, a transverse section; in fig. 2 - the same, top view.

The cultivator includes a cylindrical tank 1 with a conical bottom 2, in the center of which a drain pipe 3 is installed. Around the pipe there are two concentricly covering each other, a cap 4 and 5, the bottoms of which are connected to the drain pipe, and the edges form steps parallel to the bottom of the tank 1. Drain pipe 3 and the caps 4 and 5 are attached to the bottom of the container with the help of the rod 6 and the crosspiece 7. The bottom of the cap 4 is connected to the air supply pipe 8, and the bottom of the cap 5 to the carbon dioxide supply line 9.

Kra caps 4 and 5 and drain pipe 3 are filled with comb, and the caps themselves are made of translucent material.

The cultivator works as follows.

Capacity 5 is filled with nutrient solution and into container 1 at a level of 20-30 cm. Chlorella seedlings are introduced. Through pipeline 8, under cap 4, carbon dioxide is continuously supplied at a constant overpressure close to the height of the suspension column from the tank 1, so that the level of suspension under it is close to its edge. And under the cap 5 through the pipe 9 under pressure exceeding the height of the suspension column in the tank 1, air is constantly supplied so that it constantly sparses through its lower edge. Air, bubbling through the bottom edge of the cap 5, carries out a layer of liquid from under it, and the passage around the entire perimeter of the tank 1 in the gap with the cap 5 as a fine phase, mass exchange with the suspension, saturating it, and like an airlift transports it to the upper layer of the suspension in the tank 1. Due to the drop in pressure under the cap 5, a suspension flows into it from under the cap 4, where its surface layer contacts and is saturated with carbon dioxide gas under pressure.

Under the cap 4, the suspension enters through the drain pipe 3. At the same time, the entire volume of the suspension is on top and in the tank 1 is exposed to natural or artificial lighting, and its temperature is controlled,

Thus, the cultivator is constantly circulating and mixing the suspension, saturating it under pressure with carbon dioxide and air, after which the suspension of chlorella is pumped out to its intended purpose and the cycle of operation of the cultivator is repeated.

Performing the edges of the hubcaps 4 to 5 and

A drain pipe 3 combing reduces the sensitivity of the cultivator to a certain non-horizontal level.

Due to this design of the cultivator, the cultivation efficiency is improved. chlorella due to better mixing of the suspension and its target under carbon dioxide and air, and also simplifies the design of the device as a whole,

Claims (3)

1. A cultivator for growing Chlorella, which contains a container with a conical bottom and devices for saturating the suspension with carbon dioxide and air, is distinguished by the fact that, in order to increase the efficiency of cultivation and to simplify the design, a drain pipe installed in the center of the tank, around which there are two concentrically oh.capsules hatching each other, the bottoms of which are connected to the drain pipe, and the edges form steps parallel to the bottom of the tank, and the bottom of the first cap is connected with a carbon dioxide supply line, and the second with an air supply pipeline. 2. A cultivator according to claim 1, characterized in that the edges of the hoods and the drain pipe are comb-shaped. 3. Cultivator in accordance with paragraph 1, 1, of which there are, that the caps are made of translucent material. Sources of information taken into account in the examination 1, Cultivation of algae and higher aquatic plants, Tashkent. Publishing house FAN of the Uzbek SSR, 1972. 2. USSR author's certificate No. 184555, CL, A 01 q 31/02, 1964.