Cultivation water filtration method and device thereof

Abstract

The invention discloses a cultivation water filtration method, including a cultivation water filtration step. The cultivation water filtration step includes that: cultivation water to be filtered passes through a filter screen in surge water flow state from the filter screen down-up under the driving of a power source. The invention also discloses a filtration device for realizing the cultivationwater filtration method, comprising a tank body and a filter screen arranged in the tank body; wherein the tank body is opened with a water inlet and a water outlet, the filter screen is arranged toward the water inlet direction in an inclined way and is arranged above the water inlet, the lower end of the filter screen is connected with a vertical clapboard, the filter screen and the clap board divide the space in the tank body into a sewage region and a clear water region, and the water inlet is communicated with the sewage region while the water outlet is communicated with the clear water region. The invention can cause masses of sewage to strike the filter screen under the driving of surge water flow and deposit downward, filtration time is increased, reverse washing frequency is reduced, and better filtration effect can be realized.

Description

technical field [0001] The invention relates to the field of aquaculture water circulation treatment technology, in particular to a method for filtering aquaculture water, which is suitable for growing and raising seedlings in industrialized circulating water, treatment of raw water in aquaculture, treatment of circulating water in aquariums, temporary breeding systems in seafood wholesale markets, scientific experiments, etc. The water treatment system also relates to a filtering device for realizing the above method. Background technique [0002] Aquaculture with aquaculture water requires pure water quality, no pollution, and no dirt. Therefore, the water in the aquaculture tank needs to be filtered frequently. The early aquaculture water filters were relatively simple, usually using activated carbon or filter cotton for double-layer filtration, but , this filtering method can only filter out large particles of impurities in suspension, but cannot effectively filter small...

AI Technical Summary

Problems solved by technology

[0002] Aquaculture with aquaculture water requires pure water quality, no pollution, and no dirt. Therefore, the water in the aquaculture tank needs to be filtered frequently. The early aquaculture water filters were relatively simple, usually using activated carbon or filter cotton for double-layer filtration, but , this filtering method can only filter out large particles of impurities in suspension, but cannot effectively filter impurities such as algae, colloids, ammonia nitrogen, and heavy metals in water with smaller particles, so the filtering effect is poor; The filter mostly adopts drum type (also known as drum type) filtration and arc sieve filtration. The filtration method is: the culture water to be treated is permeated and filtered through the filter screen from top to bottom, which can achieve better filtration. Effect

[0003] But, also there is following defect in this strainer: (1) when the water that needs to be treated permeates through filter screen cloth from top to bottom, the dirt that is intercepted by filter screen cloth adheres to above easily, and the filter screen mesh hole of clogging occurs (2) In order to solve the problem that the filter screen is easy to be blocked, the existing method is to frequently backwash the filter screen to remove the dirt, but this method will cause the (3) Frequent backwashing of the filter screen also greatly reduces the number of filtration times and reduces the filtration efficiency

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