Control method of quicklime to reduce ph in saline-alkali pond

A quicklime and pond technology is applied in the field of high-alkaline water quality improvement and regulation in saline-alkali ponds, which can solve problems such as high pH that cannot be regulated, and achieve the effects of eliminating the misunderstanding that quicklime cannot be used, improving the success rate of breeding, and reducing the pH value.

Active Publication Date: 2021-05-25
EAST CHINA SEA FISHERIES RES INST CHINESE ACAD OF FISHERY SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Hebei Fishery, 2012 (11)) used microecological preparations to regulate the high pH water quality of mariculture ponds, which is also aimed at the high pH caused by biological factors, and cannot control the high pH caused by chemical factors

Method used

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  • Control method of quicklime to reduce ph in saline-alkali pond

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] (1) Measure the salinity of the saline-alkali pond water to be 1.5.

[0034] (2) quicklime application rate=200-(1.5-1)×10=195 kilograms.

[0035] (3) In the pond to maintain a water level of 20 to 40 cm, 195 kg of quicklime was evenly sprinkled, and the pH value was detected to be 11.2, no need to add any more.

[0036] (4) After splashing quicklime, the pond was safely vacant for 60 days.

[0037] (5) Check the pH value of the saline-alkali pond again before releasing the seedlings. The pH value is 8.5, and the seedlings can be released.

Embodiment 2

[0039] (1) measure the salinity of saline-alkali pond water body; measure specific gravity 1.0025 with hydrometer, temperature 24.8 ℃, according to formula salinity=1305*(1.0025-1)+0.3*(24.8-17.5)=3.2625+2.19=5.45 .

[0040] (2) quick lime application rate=200+(5-salinity)×10=200-4.5=195.5 kilograms.

[0041] (3) The pond water level is 80cm on average, and exceeds 40cm, so increase the application rate by 20%, that is, 195.5×1.2=234.6 kg, and evenly splash in the saline-alkali pond.

[0042] (4) After the quicklime is sprinkled, the saline-alkali pond before the seedlings is put in a safe place for 30 days.

[0043] (5) Check the pH value of the saline-alkali pond before releasing the seedlings. If the pH value is 8.45, if it is lower than 8.8, the seedlings can be released.

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Abstract

The invention relates to a method for regulating the pH of a saline-alkali pond with quicklime, which comprises: measuring the salinity and pH value of the water body of the saline-alkali pond, determining the application amount of quicklime, splashing the quicklime, leaving the saline-alkali pond safe and vacant, and detecting the pH value of the saline-alkali pond. The invention adopts a reasonable application method to reduce the pH value of the water body, and maintain the pH value below 9.0 during the cultivation process, thereby reducing the influence of saline-alkali water quality on the survival and growth of cultured organisms due to an excessively high pH value, and improving the cultivation success of saline-alkaline ponds Rate.

Description

technical field [0001] The invention belongs to the field of control methods for improving high alkaline water quality in saline-alkaline ponds, and in particular relates to a pH-reducing control method for quicklime in saline-alkali ponds. Background technique [0002] my country is rich in saline-alkali waters, including surface saline-alkali water. Saline-alkali water quality has the characteristics of high pH, ​​high carbonate alkalinity, high ion coefficient and many types of water quality. Due to the lack of suitable technical means to improve regulation, the high pH of saline-alkali water quality has become the main limiting factor restricting aquaculture in saline-alkali ponds. [0003] pH is an important water quality index, which is a comprehensive reflection of pond biological activities, physical and chemical properties of water body, too high or too low will threaten the healthy growth of pond culture organisms. The formation of high pH in saline-alkali pond w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/66
CPCC02F1/66
Inventor 来琦芳王慧么宗利周凯
Owner EAST CHINA SEA FISHERIES RES INST CHINESE ACAD OF FISHERY SCI
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