Electro-catalysis treatment device for seawater circulation culture system

Abstract

The invention discloses an electro-catalysis treatment device for seawater circulation culture system. The electro-catalysis treatment device comprises a barrel, a water inlet, an air inlet, a water outlet and an exhaust opening, wherein the water inlet and the air inlet are located in the bottom of the barrel, and the water outlet and the exhaust port are located in the top of the barrel. Multiple carbon rods are arranged in the barrel and parallel to a barrel body, and the carbon rods extend above the water outlet from the water inlet. The parts between the carbon rods are filled with catalyst particles. According to the device, ammonia nitrogen and COD in seawater culture waste water can be effectively removed, the trouble caused by the high salinity of seawater is converted into advantages, the seawater circulation culture system is made to stably run, and the electro-catalysis treatment device is efficient, convenient to use, small in occupied space, economical and environmentally friendly.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a treatment device for circulating seawater fish farming wastewater. Background technique [0002] The core technology of the seawater recirculation aquaculture system is the treatment and recycling of aquaculture wastewater. The degradation and removal of pollutants such as ammonia nitrogen and nitrite nitrogen that are the most harmful to aquaculture is the key to the successful operation of this technology. In daily production management, feeding behavior and fish excrement had a significant impact on the concentration of ammonia nitrogen, COD and SS in aquariums, but had little effect on the concentration of nitrite nitrogen. [0003] The seawater recirculating aquaculture technology has good economic benefits and low environmental pollution. It integrates modern engineering, electromechanical, biology, environmental protection and feed science and other disciplines....

AI Technical Summary

Problems solved by technology

[0004] Although many national development projects in my country have been introduced in the past, it is difficult to popularize because of the high equipment price and operating cost, and it is not suitable for the natural conditions of our country so it is difficult to popularize

A lot of researches and developments have been done on the seawater recirculating aquaculture system in China, and some achievements have been made, mainly including physical methods, chemical methods and biological methods. Constraints on general-purpose industrial pumps, valves, filtration, oxygenation, sterilization, testing, automatic control and other equipment, and equipment durability, corrosion resistance, reliability of testing instruments, compatibility of the entire system, ease of operation, and ease of maintenance There are also many problems of one kind or another. As a result, although considerable manpower and financial resources have been invested in the development of seawater recirculation aquaculture systems in China, the prices of facilities and equipment, energy consumption, and operating costs remain high. At the same time, water treatment The effect is not up to the standard of aquaculture water stipulated by the state, so far it cannot be popularized and applied

[0005] In the wastewater physical treatment technology of seawater recirculation aquaculture, especially the technologies of sedimentation, filtration and foam separation, these physical treatment facilities have the advantages of low cost and operating cost, but the disadvantage is that they can only remove suspended solids in the water body, but cannot remove soluble substances. Pollutants, especially ammonia nitrogen, which is highly toxic to fish and other farming objects, cannot be removed

[0006] Among the wastewater chemical treatment technologies for seawater recirculating aquaculture, oxidation technology is mostly used in the treatment of seawater intensive aquaculture wastewater. Ozone has a strong oxidizing ability, and the dissolved oxygen content in the treated water is high, which can quickly decompose organic matter and reducing properties in the water. Inorganic matter, kills viruses, bacteria and microalgae in the water body, has no secondary pollution, etc., but the treatment cost of ozone oxidation technology is very high, and the residual ozone has a certain toxic effect on the breeding objects

[0007] The wastewater biochemical treatment technology of seawater recirculation culture uses the absorption and metabolism of microorganisms to remove organic matter and ammonia nitrogen in the water body. Compared with physical and chemical technology, it has the advantages of low investment and is not easy to produce secondary pollution. It is the most economical and effective treatment of dissolved pollutants. way, but the high salinity of seawater will inhibit the growth of microorganisms, which is not conducive to the progress of biochemical reactions

Images