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Ultrafiltration purification method for industrialized seedling production water of macrobrachium rosenbergii

A Macrobrachium rosenbergii, industrialization technology, applied in the field of water purification, can solve the problems of poor water purification effect, increased content, unsatisfactory microbial killing effect, etc., to achieve the effect of ensuring stable production, convenient operation and management

Active Publication Date: 2014-07-30
ZHEJIANG SOUTH TAILAKE FRESHWATER FISH BREEDING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional water treatment technology uses sand filtration purification and chemical reagents to kill microorganisms (such as chlorine disinfection). There are many halogenated hydrocarbon compounds, and the content of these chlorine-containing organic compounds has doubled, which is the biggest cause of human beings suffering from various gastrointestinal cancers

Method used

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  • Ultrafiltration purification method for industrialized seedling production water of macrobrachium rosenbergii
  • Ultrafiltration purification method for industrialized seedling production water of macrobrachium rosenbergii
  • Ultrafiltration purification method for industrialized seedling production water of macrobrachium rosenbergii

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Experimental program
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Effect test

Embodiment

[0028] (1) On January 7, 2013, the South Taihu Lake base of the project unit used the 12# (6.6 mu) pond in the base as a pretreatment pond to introduce water from an external river. The water source was heavy in sediment, low in transparency and contained a large amount of blue-green algae.

[0029] (2) On January 8, 100kg / mu of quicklime was applied, and the sediment basically settled to the bottom of the pond after 3 days.

[0030] (3) On January 28, the detected pH dropped to 8.6.

[0031] (4) Preparation of artificial seawater: pump 12# pond water into the storage tank, and prepare 10‰ artificial seawater according to the formula in Table 1. After settling for 10 hours, the single-celled algae in the water sank to the bottom of the pool under the condition of no light.

[0032] Table 1 Artificial seawater formula table

[0033] project

Consumption per ton (KG)

Salt

10

magnesium sulfate

3.8

calcium chloride

0.36

potas...

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Abstract

The invention discloses an ultrafiltration purification method for industrialized seedling production water of macrobrachium rosenbergii. The method comprises five steps of primary precipitation, artificial seawater preparation and dark precipitation, physical filtration, membrane separation and ozone sterilization. The method is capable of removing all suspended particles and unicellular algae having the diameter above 0.1 micron in aquaculture water so that the water transparency is above 2 meters and the ammonium-nitrogen removal rate is above 90%, and the treated water is suitable for fry rearing of rare fish and shrimp; and due to ultrafiltration membrane separation in combination with secondary ozone sterilization, more than 99% of microorganisms (the diameter of common microorganisms is above 0.3 micron), and therefore, the transverse route of transmission of harmful microorganisms in the external environment is effectively cut off and stable production of the fry of fish and shrimp is guaranteed.

Description

technical field [0001] The invention relates to the technical field of water quality purification, in particular to a water quality ultrafiltration purification method for industrialized Macrobrachium rosenbergii nursery. Background technique [0002] In recent years, the failure of industrialized seedlings has occurred frequently due to the water quality and microorganisms exceeding the standard for seedlings caused by coastal red tides, algae blooms, and river pollution. Since 2010, large-scale outbreaks of new larvae of Macrobrachium rosenbergii from south to north across the country have resulted in a reduction of more than 2 / 3 of the national production of Macrobrachium rosenbergii seedlings. Farmers have no seedlings to raise, and the market fluctuates greatly. One of the important reasons is due to the mass outbreaks caused by the spread of pathogens through river water sources in dense nursery farms. Therefore, water source treatment technology has become one of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/08C02F1/44C02F1/52A01K61/00
CPCY02A40/81
Inventor 王军毅高强顾根才
Owner ZHEJIANG SOUTH TAILAKE FRESHWATER FISH BREEDING
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