Mulching-film sand filter pond and method for disposing of raw water used for prawn culture

A technology of sand filter and plastic film, applied in chemical instruments and methods, water/sewage multi-stage treatment, adsorption water/sewage treatment, etc., can solve residual problems, achieve simple treatment, high use value, and increase aquaculture production Effect

Inactive Publication Date: 2011-05-25
GUANGDONG OCEAN UNIVERSITY
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AI Technical Summary

Problems solved by technology

Chemical treatment of aquaculture water is used, and chlorine-containing disinfectants are often used, which is prone to residues

Method used

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  • Mulching-film sand filter pond and method for disposing of raw water used for prawn culture

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Embodiment 1

[0018] Use the water pump to directly extract the external sea water, enter the foam separator, and then pass through the ozone generator for secondary treatment after being separated by the foam separator, and then enter the sand filter tank, and set a filter bag at the water inlet of the sand filter tank. The filter bag is round. Barrel-shaped, with a diameter of 20cm and a length of 8-10 meters, the area of ​​the sand filter is about 2 acres, and the depth of the pool is about 3 meters. The bottom of the pool and slope protection are covered with plastic film, and 10-12 holes are arranged radially at the bottom of the pool. PVC pipe, the inner diameter of the PVC pipe is 20cm, the hole diameter is 0.05cm, and the length is 20-30 meters. It is covered with 20-mesh silk screen, covered with 30-40cm of fine sand, and the surface of the fine sand is covered with 10cm of activated carbon. A square sump is built with concrete near the sand filter. The length, width, and height of ...

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Abstract

The invention relates to a mulching-film sand filter pond and method for disposing of raw water used for prawn culture, wherein the pond comprises a mulching film pond, active carbon, sand, a polyvinyl chloride (PVC) pipe, a filter screen, a water collecting pond and a mulching film, wherein the bottom of the water collecting pond is lower than the mulching film pond, and the PVC pipe is communicated with the water collecting pond. Outside seawater is subjected to primary treatment by a foam separator, secondary treatment by an ozone generator, and tertiary treatment by mesh filtration of a 200-mesh mesh bag, then is introduced into the sand filter pond, and is subjected to quaternary treatment by filtration of the active carbon and fine sand; and the treated seawater is collected into the water collecting pond through the pored PVC pipe, and is pumped into a water inlet channel from the water collecting pond by a water pump and then enters a culture pond. The mulching-film sand filter pond and method have the advantages of realizing efficient treatment of culture water, having wide-range geographical adaptability, being applicable to sea area the substrate of which is mud or rocks and not suitable for building a sand filter system, treating the raw water used for culture simply and conveniently, reducing the occurrences of diseases and water pollution, greatly improving the success rate of prawn culture and yield, and having an extremely high use value.

Description

technical field [0001] The invention relates to a plastic film sand filter pond and a method for treating raw water for prawn cultivation. technical background [0002] Shrimp aquaculture is the pillar industry of marine aquaculture in my country. In 1992, the aquaculture area exceeded 140,000 hectares, and the output was 220,000 tons, with an average output of 1.57 tons per hectare. Since 1993, the output of shrimp farming began to decline. In 1995, my country had only 50,000 tons, with an average yield of 0.36 tons / ha. From 1993 to 1995, the annual direct economic loss of the shrimp farming industry reached 3 billion yuan. [0003] Diseases have become the most important restrictive factors for the shrimp farming industry in my country. Since the outbreak of shrimp virus diseases in Fujian and eastern Guangdong in 1992, especially white spot syndrome (white spot syndrome, WSS), since it became popular in the whole country in 1993, WSS has become the most serious disease ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/28C02F9/04
Inventor 孙成波李义军李婷王平孙成志张特李咏唐圣利
Owner GUANGDONG OCEAN UNIVERSITY
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