Water quality and algae phase heterotopic regulation system

Abstract

The invention discloses a system for modulating malposition of water quality and algae cultivated in an eel soil pool and relates to water body treatment in fishery. The invention needs to solve the problems that the eel pool has instable algae phase and low water treatment efficiency. The system adopts a microfilter, a biochemical pool and an autocontrol water transportation system; and water extracting pipes in the eel pool are collected to an inspection shaft. The system is characterized in that the inspection shaft is connected with the microfilter through a pipeline; the microfilter is fixed on a microfilter pool; a water inlet is lower than the level of the eel pool by 0.75 m; a screen bracket of the microfilter is provided with a level controller for controlling a self-washing pump to wash a screen; water filtered out through the microfilter self-flows to the biochemical pool; the inside of the biochemical pool is provided with a filler and a micropore pipe of a micropore aeration system; the top part of the biochemical pool is covered with black plastic rubber cloth; water in the biochemical pool self-flows to an adjusting pool of the autocontrol water transportation system; and the water of the eel pool is subjected to mechanical filtering, biochemical decomposition, water amount adjustment and a recycling treatment link to remove algae and suspended substances in the water and dissolve organic matters in order to keep algae with certain amount and reasonable cultivating water quality in the eel pool. The system is used for cultivation in the eel soil pool.

Description

technical field [0001] The invention relates to a heterotopic water treatment method for fishery water body purification, in particular to a water quality and algal phase heterotopic control system for eel earthen pond cultivation. Background technique [0002] Cultivation of eel in earthen ponds has developed rapidly in southern my country. Compared with eel cultivation in cement ponds, eel cultivation in earthen ponds has the advantages of less investment, simple management, and easy popularization and promotion. However, eel cultivation in earthen ponds also has problems such as large water consumption, unstable water quality, large phase changes of pond algae, high incidence of eels, and drug residues. According to the survey, the area of ​​earthen ponds for raising eels in southern my country is between 5 and 20 mu, and they generally use nearby water resources for running water or replenishing new water. Usually, new water is injected once every 10 to 15 days. In summe...

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Problems solved by technology

Due to the influence of factors such as the external environment and climate, the water quality of the supplementary water source is difficult to be guaranteed, which directly affects the stability of the water quality of the eel pond and the stability of the algae community, especially in the summer and autumn. ) changes rapidly, and algal mass reproduction and death often occur in a short period of time, which seriously affects the safety and production efficiency of eel farming

In recent years, eel earth pond culture in my country mainly includes earthen pond ecological culture mode, surface infiltration water culture mode, deep well intensive culture mode, etc. These culture modes generally adopt the method of improving raw water quality, or by planting aquatic plants around the pond and using probiotics regularly. Bacteria are used to improve the bottom quality of earthen ponds. Although these models have certain effects on improving the breeding environment, they have little effect on the stability of the eel pond water environment.

There are also some breeding units that use the method of building algae, shellfish biofilter and biochemical ponds to cultivate eels in ponds, and have achieved certain results, but this method has low treatment efficiency and has little effect on the control of algae in ponds

The industrialized recirculating aquaculture mode can increase the output of aquaculture water. For example, Taiwan’s ultra-intensive outdoor recirculating aquaculture Japanese eel system adopts a 100um mesh drum microfilter, submerged and trickling filter tanks, dissolved oxygen cones, and automatic bait feeding. Machine, water quality monitoring system, ultraviolet sterilization and other equipment for fully enclosed production, the output can reach 40kg / m 2 Above, but the system is complicated, the investment is high, and the operation and management are complicated, so it is not suitable for eel farming in ponds

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