Rotary type culture water purifying device

Abstract

The invention relates to a rotary type culture water purifying device which comprises an outer barrel and inner barrels which are arranged in the outer barrel, wherein a vertical clapboard is arrangedbetween the outer barrel and the inner barrel of the outermost layer, a water inlet pipe is arranged between the outer barrel at one side of the clapboard and the adjacent inner barrel, water inlet holes are formed at the lower part of the water inlet pipe, and water passing holes are formed on the side wall of the inner barrel of the outermost layer at the other side of the clapboard; a verticalclapboard is also arranged between two layers of adjacent inner barrels from bottom to top, and water passing holes are alternately arranged on the side wall of the inner barrel of the outer layer atone side of the clapboard and the side wall of the inner barrel of the inner layer at the other side of the clapboard; a water discharge pipe is arranged in the centremost inner barrel, a vertical clapboard is arranged between the water discharge pipe and the centremost inner barrel, and water discharge holes on the water discharge pipe and water passing holes on the centremost inner barrel are respectively positioned on the two sides of the clapboard; and the inner barrels and the outer barrel are filled with filtering material dielectric layers, and the water inlet holes, the water passingholes and the water discharge holes are lower than the top surfaces of the filtering material dielectric layers. The rotary type culture water purifying device has the characteristics of convenient movement and installation, good purifying effect, low manufacturing cost and the like, and is favorable for regulating and controlling the culture water quality, improving the culture effect and savingthe water for culture.

Description

technical field [0001] The invention relates to aquaculture, in particular to the purification treatment of pond aquaculture water. Background technique [0002] Pond aquaculture is the main production mode of aquaculture in China and occupies an important position in my country's aquaculture industry. According to statistics, in 2006, there were 2.531 million hectares of freshwater pond aquaculture in the country, and the aquaculture output was 14.95 million tons. The pond aquaculture output accounted for more than 41% of the country's total aquatic products. Pond farming has made a great contribution to the supply of high-quality protein for people. [0003] However, in the traditional pond culture, due to the large amount of bait put into the pond, coupled with the high density of cultured products and the large amount of excrement in the pond, the water body becomes eutrophic. Therefore, it is necessary to control the water quality of aquaculture water. At present, th...

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Problems solved by technology

Constructed wetlands have a good effect in the purification of pond aquaculture water, but the construction cost of constructed wetlands is very high, and the area is also large. It is very difficult to popularize and apply under the current situation of pond aquaculture in our country.

[0005] Biological aerated filter is a high-efficiency water treatment technology widely used in industrial and domestic sewage treatment. However, biological aerated filter is excavated fixedly on the ground, which needs to occupy a certain space and cannot be moved. Large-scale The pond culture needs to set up multiple aerated biofilters, the operation cost is high, and because the main eutrophication substances in the pond culture water are nitrogen and phosphorus, and also contain some organic matter and other suspended matter, its composition is similar to that of industrial and domestic sewage There is a big difference in the composition, and the biological aerated filter is not very suitable for the purification of pond aquaculture water.

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