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. The rotary pollution discharge device comprises a pot-type pollution discharge base, a backwater opening and a pollution discharge opening which spirals downward. The upper end of the pollution discharge opening is provided with a pollution discharge device cover. The bottom of the residual-feed excrement collector is conical. The conical bottom is provided with a discharge outlet which is provided with a plug. A pollution discharge pipe is arranged between a middle piece of the residual-feed excrement collector and the pollution discharge opening. An upper piece of the residual-feed excrement collector is equipped with an overflow tube which is connected with a steering bend. According to the system, backwater and sewage can be effectively separated. When water spirally flows in the culture pond, it is beneficial to discharge of sewage. The pollution discharge device cover is used for preventing aquatic products from entering the pollution discharge opening. Sewage is collected and deposits in the residual-feed excrement collector. A supernatant enters the overflow tube with the 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.

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 environment. The sewage of the existing aquaculture pond The device is an ordinary floor drain with a filter. This kind of floor drain cannot separate the backwater and sewage, and when the water swirls in the breeding pond, it is not conducive to the discharge of sewage.

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