A kind of breeding water filtration method and its device

Abstract

The invention discloses a method for filtering aquaculture water, which includes a step of filtering aquaculture water. The step of filtering aquaculture water is as follows: the aquaculture water to be filtered is driven by a power source and passes through the filter mesh from the bottom of the filter mesh in a state of surging water flow The present invention also discloses a filtering device for realizing the above-mentioned aquaculture water filtering method, comprising a box body and a filter screen set in the box body, the box body is provided with a water inlet and a water outlet, and the filter screen faces the water inlet The direction is inclined, the filter screen is located above the water inlet, and the lower end of the filter screen is connected with an upright partition. The two together divide the space in the box into a sewage area and a clean water area. The water inlet and the sewage area are communicated, and the water outlet is communicated with the clean water area. The invention makes most of the dirt in the aquaculture water collide with the filter screen under the drive of the surging water flow and settle down, which prolongs the filtering time, reduces the number of times of backwashing, and can achieve a better filtering effect.

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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