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Method for reducing nitrite in aquiculture water bodies

A nitrite and aquaculture technology, applied in the direction of chemical instruments and methods, water/sewage multi-stage treatment, neutralized water/sewage treatment, etc., to solve the problem of denitrification and avoid poor results

Inactive Publication Date: 2016-05-04
TIANJIN RONG LEE BIOTECH DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a simple and convenient method for reducing nitrite in aquaculture water that effectively solves the problem of denitrification of water in the later stage of aquaculture

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A method for reducing nitrite in aquaculture water of the present invention comprises the following steps:

[0017] (1) Use 2g / m 3 Citric acid is used to treat the aquaculture water body, and the pH value of the aquaculture water body is adjusted to 7.5;

[0018] (2) After treatment in step (1), use 0.6g / m after an interval of 2 hours 3 Treatment of aquaculture water with potassium hydrogen persulfate;

[0019] (3) After treatment in step (2), use 0.5g / m after an interval of 3-5h 3 Sodium hypophosphite treats aquaculture water.

[0020] After the above steps, the denitrification efficiency reaches 95%.

Embodiment 2

[0022] A method for reducing nitrite in aquaculture water of the present invention comprises the following steps:

[0023] (1) Use 2g / m 3 Sulfamic acid is used to treat the aquaculture water body, and the pH value of the aquaculture water body is adjusted to 7.5;

[0024] (2) After treatment in step (1), use 0.6g / m after an interval of 2 hours 3 Potassium ferrate treatment of aquaculture water;

[0025] (3) After treatment in step (2), use 0.5g / m after an interval of 3-5h 3 Sodium hypophosphite treats aquaculture water.

[0026] After the above steps, the denitrification efficiency reaches 94%.

Embodiment 3

[0028] A method for reducing nitrite in aquaculture water of the present invention comprises the following steps:

[0029] (1) Use 1g / m 3 Citric acid is used to treat the aquaculture water body, and the pH value of the aquaculture water body is adjusted to 8;

[0030] (2) After treatment in step (1), use 0.5g / m after an interval of 2h 3 Potassium ferrate treatment of aquaculture water;

[0031] (3) After treatment in step (2), use 0.4g / m after an interval of 3-5h 3 Sodium hypophosphite treats aquaculture water.

[0032] After the above steps, the denitrification efficiency reaches 91%.

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Abstract

The invention belongs to the technical field of aquiculture, and particularly relates to a method for reducing nitrite in aquiculture water bodies, which includes the following steps: 0.1g / m<3> to 2g / m<3> of citric acid or 0.1g / m<3> to 2g / m<3> of sulfamic acid is used for treating an aquiculture water body, so that the pH value of the aquiculture water body is regulated to 7.5 to 8.0; after an interval of two hours, 0.1g / m<3> to 1g / m<3> of potassium peroxymonosulfate or 0.1g / m<3> to 1g / m<3> of potassium ferrate is used for treating the aquiculture water body; after an interval of three to five hours, 0.1g / m<3> to 1g / m<3> of sodium hypophosphite is used for treating the aquiculture water body. The main components used by the method are chemical substances, the conventional reduction-oxidation reaction is utilized to reduce the content of nitrite, consequently, the situation of poor using effect in oxygen-deficient water bodies which is common at the middle and later stages of aquiculture is prevented, and the denitrification problem of water bodies at the middle and later stages of aquiculture is effectively solved.

Description

technical field [0001] The invention belongs to the technical field of aquaculture, and in particular relates to a method for reducing nitrite in aquaculture water. Background technique [0002] In normal aquaculture water, organic matter such as residual bait and feces of aquatic animals is converted into harmful nitrite by nitrosifying bacteria in an aerobic environment, and then further converted into non-toxic nitrite by nitrosifying bacteria under aerobic conditions. Harmful nitrate, the converted nitrate is absorbed and utilized by algae in the water body, thus completing a benign material metabolism cycle. [0003] But in recent years, with the continuous increase of breeding density, especially in the middle and late stages of breeding, the content of organic matter in the water has seriously exceeded the standard, exceeding the carrying capacity of the water body's own metabolism. Nitrosifying bacteria and nitrifying bacteria gradually consume dissolved oxygen in t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04
CPCC02F9/00C02F1/66C02F1/70C02F1/72
Inventor 张寿荣
Owner TIANJIN RONG LEE BIOTECH DEV CO LTD
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