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Saline-alkaline pond quick lime pH reduction regulation and control method

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

Active Publication Date: 2018-12-11
EAST CHINA SEA FISHERIES RES INST CHINESE ACAD OF FISHERY SCI
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  • Summary
  • 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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  • Saline-alkaline pond quick lime pH reduction regulation and control method

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Experimental program
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Effect test

Embodiment 1

[0033] (1) Determine the salinity of the salt-alkali pond water as 1.5.

[0034] (2) The amount of quicklime applied=200-(1.5-1)×10=195 kg.

[0035] (3) Sprinkle 195 kilograms of quicklime evenly in the pond to maintain a water level of 20-40cm, and the pH value is 11.2, no need to add.

[0036] (4) The pond is safely left empty for 60 days after the quicklime is splashed.

[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 the salt-alkali pond water; use a hydrometer to measure the specific gravity of 1.0025 and the temperature of 24.8°C. According to the formula, the salinity=1305×(1.0025-1)+0.3×(24.8-17.5)=3.2625+2.19=5.45 .

[0040] (2) The amount of quicklime applied=200+(5-salinity)×10=200-4.5=195.5 kg.

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

[0042] (4) After the quicklime is splashed, the saline-alkali pond is safely left unoccupied for 30 days before the seedling.

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

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Abstract

The invention relates to a saline-alkaline pond quick lime pH reduction regulation and control method which comprises the following steps of determining the salinity and pH value of a water body of asaline-alkaline pond, determining the application amount of quick lime, splashing the quick lime, performing safe vacancy on the saline-alkaline pond, and detecting the pH value of the saline-alkalinepond. In the saline-alkaline pond quick lime pH reduction control method provided by the invention, by adopting a reasonable application method, the pH value of the water body is lowered and is maintained at 9.0 or below in the culturing process, so that the influences of the saline-alkaline water quality on survival and growth of cultured species caused by a too high pH value are lowered, and the culture success rate of the saline-alkaline pond is increased.

Description

Technical field [0001] The invention belongs to the field of methods for improving and regulating high alkaline water quality in saline-alkali ponds, and particularly relates to a method for reducing pH of quicklime in saline-alkali ponds. Background technique [0002] my country is rich in saline-alkali waters, including surface saline-alkali water. Saline-alkali water has the characteristics of high pH, ​​high carbonate alkalinity, high ion coefficient and many types of water quality. Due to the lack of appropriate technical means for improvement and 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 indicator, which is a comprehensive manifestation of pond biological activities, water physical and chemical properties, too high or too low will threaten the healthy growth of pond cultured organisms. The formation of high pH in saline-alkali ponds main...

Claims

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Application Information

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Patent Type & Authority Applications(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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