Device for culturing biological flocculating constituent by use of solid waste of aquaculture

Abstract

The invention discloses a device for culturing a biological flocculating constituent by use of the solid waste of aquaculture. The device consists of a culture barrel, a feed pump, a floating ball liquid-level switch, a stirrer and a dosing pump, and is characterized in that: a feed port and a dosing port are arranged at the top of the culture barrel; the feed port is connected with the feed pump; the dosing port is connected with the dosing pump; a discharge port is arranged at the 0.8m-deep position of the side wall of the culture barrel; the stirrer is mounted at the top of the culture barrel; the opening of the feed pump is controlled by the floating ball liquid-level switch; the dosing pump is connected with a plastic barrel; an organic carbon source is reserved in the plastic barrel; the opening of the dosing pump is controlled by the floating ball liquid-level switch; a transmission shaft of the stirrer is a hollow shaft; an air leading-in hole vertical to the central axis of the transmission shaft is drilled below the joint between the transmission shaft of the stirrer and a motor, and the hole is communicated with a central axis hole; an air leading-out hole vertical to the central axis of the transmission shaft is drilled below the joint between the transmission shaft and a stirring impeller, and the hole is communicated with the central axis hole; and the motor of the stirrer is a variable-speed motor which can adjust the mixing strength.

Description

technical field [0001] The invention relates to a device for utilization of aquaculture solid waste. Background technique [0002] In the process of aquaculture production, 20-25% of the protein in the artificial feed fed is used by the breeding objects, and the remaining part exists in the breeding environment in the form of ammonia nitrogen, residual bait and feces. Therefore, there are three major problems in traditional aquaculture, which affect the sustainable development of aquaculture. One is that a large amount of aquaculture sewage is produced during the breeding process. According to estimates, it takes 20m3 to raise 1kg of prawns. 3 Clean water source, the clean water source consumed by breeding 1kg fish is about 2-10m 3 . The second is that a large amount of solid waste such as residual bait and manure is produced during the breeding process. It is estimated that a cage farm with an annual output of 60 tons of salmon discharges organic wastes equivalent to tha...

AI Technical Summary

Problems solved by technology

The third is to consume a large amount of animal feed such as fishmeal

But there are the following disadvantages: one is easy to cause severe hypoxia in the water body, microbial degradation of organic matter will consume oxygen, and directly adding carbon source to the aquaculture water body will cause a sudden consumption of oxygen in the water body and affect the growth of the aquaculture object; the other is that the aquaculture water body is turbid If the concentration is too high, the formation of biological flocs directly in the aquaculture water will increase the concentration of suspended particles in the aquaculture water and affect the growth of the aquaculture objects.

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