Closed circulating rotifer continuous culturing system

Abstract

The invention provides a closed circulating rotifer continuous culturing system which comprises at least one group of rotifer culturing barrels, at least one group of rotifer culturing reinforcement barrels, a rotifer harvesting device, a water treatment device and at least one group of microalgae culturing barrels, wherein the output ends of the rotifer barrels are connected with the rotifer culturing reinforcement barrels, the output ends of the rotifer culturing reinforcement barrels are connected with the rotifer harvesting device, the rotifer harvesting device is connected with the watertreatment device, the output end of the water treatment device is connected with the microalgae culturing barrel, and the microalgae culturing barrel is communicated with the rotifer culturing barrels. The invention adopts a special microalgae culture control technology, a water treatment technology and a chemostat theory, realizes the recycle of rotifer culture water the continuous production ofrotifers, saves water resources and reduces emission of harmful substances under the condition of ensuring that the rotifers can be efficiently and stably produced; meanwhile, the invention performs nutrition reinforcement to the cultured rotifers, improves and strengthens the nutrition quality of the rotifers, and achieves the purpose of the invention.

Description

technical field [0001] The invention relates to a culture system for cultivating microorganisms, in particular to a closed-cycle continuous culture system for rotifers. Background technique [0002] Rotifers are tiny (0.04-2.0 microns) multicellular animals that are distributed worldwide. Due to their small size, slow swimming, fast reproduction, high-density cultivation, artificially enhanced nutrition, and easy digestion and absorption, etc. Several advantages make rotifers a very important biological bait. At present, in seawater fish breeding, larvae generally feed on rotifers after opening their mouths. At present, there is no artificial feed that can replace rotifers. Some microencapsulated feeds have achieved certain success in prawn breeding, but in fish breeding, due to the Larvae cannot digest these microencapsulated feeds, and fish larvae still need to use rotifers as bait. Rotifers are an essential and important source of live bait for fish, shrimp, and crab br...

AI Technical Summary

Problems solved by technology

However, rotifers also have some deficiencies in the current production and application. The main manifestations are: 1. The instability of mass cultivation, due to the harmful substances brought in together with the microalgae as bait during the cultivation process, it will cause frequent changes in the cultivation process. The population density drops sharply; ②The high cost of mass cultivation, because the demand for rotifers is very large, and the cultivation of rotifers also requires a large amount of microalgae, so that the cultivation of rotifers takes up a lot of manpower, material resources and space; ③Wastewater after a large amount of cultivation is discharged indiscriminately, causing pollution to the environment, and the nitrogen in the wastewater is not fully utilized

[0004] Because the above problems have largely restricted the development of rotifer applications, a continuous culture system for rotifers is particularly needed to make up for the shortcomings of existing rotifers in production and application.

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