Sewerage system for adult fish culture pond

Abstract

The invention relates to equipment for aquaculture, especially to a sewerage system for an adult fish culture pond. The sewerage system comprises an aquaculture pond body, a rotary pollution discharge device and a residual-feed excrement collector. Due to the above structure, it is beneficial to discharge of sewage when water spirally flows in the culture pond. The upper end of a backwater opening is provided with a pollution discharge device cover, thus preventing aquatic products from entering a pollution discharge opening. After discharged, sewage is collected and deposits in the residual-feed excrement collector. A supernatant enters an overflow tube with a steering bend and enters a secondary water purification and filtration link. Thus, water sources are saved; a purification and filtration effect is more excellent; and overflow and backflow are prevented. A plug is a columnar hollow long plug embedded in a discharge outlet, and the sidewall of the upper end of the long plug is provided with multiple drain openings. The pipe orifice of the overflow tube is lower than the drain openings, thus preventing sewage from overflowing from the residual-feed excrement collector when sewage flow is too much.

Description

technical field [0001] The invention relates to equipment for aquaculture, in particular to a sewage discharge system for adult fish culture ponds. Background technique [0002] Aquaculture is the production activity of breeding, cultivating and harvesting aquatic animals and plants under human control. It generally includes the whole process of growing aquatic products from seedlings under artificial breeding management. In a broad sense, it can also include the proliferation of aquatic resources. Aquaculture includes extensive culture, intensive culture and high-density intensive culture. Extensive culture is to put seedlings in small and medium-sized natural waters, and to grow aquatic products completely by natural bait, such as fish culture in lakes and reservoirs and shellfish culture in shallow seas. Intensive farming is the use of bait and fertilization methods to grow aquatic products in smaller water bodies, such as pond fish farming, cage fish farming and fence...

AI Technical Summary

Problems solved by technology

[0003] In high-density intensive breeding, it is necessary to recycle, filter, purify, oxygenate, and sterilize the backwater and sewage in the aquaculture pond for secondary use, which has achieved the purpose of saving water and maintaining the breeding environm

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