Method for removing organics and ammonia nitrogen from aquaculture water

A technology for aquaculture water and organic matter, applied in chemical instruments and methods, sustainable biological treatment, biological water/sewage treatment, etc., can solve the problems of low efficiency and high treatment cost, achieve economical and efficient removal, increase regeneration rate and regeneration rate Effect

Inactive Publication Date: 2008-06-18
SHANGHAI FISHERIES UNIV
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Problems solved by technology

[0003] The purpose of the present invention is to solve the problems of low efficiency and high treatment cost for removing refractory organic matter and ammonia nitrogen in aquaculture water in the prior art, and provide an efficient, economical and practical method for removing refractory organic matter and ammonia nitrogen in aquaculture water

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  • Method for removing organics and ammonia nitrogen from aquaculture water

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Embodiment

[0008] Example: The method for purifying circulating aquaculture water by ozone / ultraviolet-biological regeneration filler is as shown in the attached drawings. / The lower part of the UV combined oxidation reaction barrel 2 enters the reaction barrel 2; the amount of ozone added in the ozone / UV combined oxidation reaction barrel is determined between 0.5-5 mg / L according to the water quality, such as 2 mg / L; ozone / UV The ultraviolet lamp group 4 with a built-in outer quartz sleeve 3 in the center of the combined oxidation reaction barrel 2 is composed of a plurality of 30W hot cathode ultraviolet low-pressure mercury lamps. That is, the ultraviolet radiation intensity in the far distance of the ozone / ultraviolet combined oxidation reaction barrel should be greater than 15000μW / cm 2 ; Water and ozone gas flow upward through the ozone / ultraviolet combined oxidation reaction tank 2, the hydraulic retention time is 5min, and the refractory organic matter and ammonia nitrogen in t...

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Abstract

The invention relates to a method of removing organic substances and ammonia nitrogen in aquaculture water, which solves the problem about high cost and low efficiency of aquaculture water treatment. The invention adopts ozone ultraviolet irradiation and biological regeneration filling absorption, the invention is characterized in that: an ozone / ultraviolet combined oxidization reaction tank and a biological regeneration filling reaction tank filled with biological active carbon, biological clinoptilolite, sandiness soil granules, and limestone are arranged, the aquaculture water and the ozone gas are mixed through venturi tube and enters from the lower part of the ozone / ultraviolet combined oxidization reaction tank, the water and the ozone gas flow upwardly through the reaction tank and stay for 2-10 minutes, the treated aquaculture water flows out from the water outlet of the upper part of the reaction tank, the ozone tail gas is exhausted from the gas exhaust opening of the reaction tank; the pre-treated aquaculture water flows through the biological regeneration filling layer from the water inlet of the upper part of the biological regeneration filling reaction tank, and stays for 5-50 minutes, the treated aquaculture water flows out from the lower part of the biological reaction regeneration filling reaction tank, the method is used for aquaculture water treatment.

Description

Technical field: [0001] The present invention relates to a method for removing organic matter and ammonia nitrogen in aquaculture water. Background technique [0002] The ozone / ultraviolet deep oxidation method is applied to the deep purification of organic pollutants in industrial wastewater, secondary effluent of urban sewage treatment plants and drinking water. Its mechanism of action is that under ultraviolet irradiation, ozone directly absorbs ultraviolet rays and promotes the reaction between ozone and water. 2 O 2 Hydroxyl radicals are generated, which further promotes the decomposition of ozone, and the formed hydroxyl radicals and other groups with stronger oxidative properties degrade faster to remove organic pollutants and ammonia nitrogen in water, and improve the biodegradability of organic pollutants. However, because the ozone / ultraviolet method takes a long time to completely degrade organic pollutants, especially refractory organic substances, the cost of ...

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Application Information

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IPC IPC(8): C02F9/14C02F1/32C02F1/78C02F3/10
CPCY02W10/10
Inventor 谭洪新罗国芝朱浩
Owner SHANGHAI FISHERIES UNIV
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