A method for absorbing sewage in aquaculture ponds

Abstract

The invention relates to a dirt suction method for a culture pond. A floating boat (1) floating on the water surface is arranged, and an immersible pump (6) is hung and fixed below the floating boat (1) and communicated with a suction head device (10) serving as a dirt suction head. The suction head device (10) controls the dirt suction design distance between the suction head position of the suction head device and the bottom of the pond through a pair of pressure reducing plates (101) of the suction head device. The two sides of the suction head device (10) are each rotationally connected with a guide rod (8) capable of freely stretching out and drawing back with horizontal first rotary shafts (105) as the axis, and the upper ends of the guide rods (8) are rotationally connected with a body of the floating boat (1) with horizontal second rotary shafts (81) as the axis. Along with movement of the floating boat (1), when the immersible pump (6) is started to suck dirt, the pressure reducing plates (101) are always in contact with the bottom of the pond in a closely attached mode, and the design dirt suction distance is kept between the suction head position and the bottom of the pond. Along with the changes of the depth and gradient of the pond, the guide rods (8) freely stretch out and draw back, and the first rotary shafts (105) and the second rotary shafts (81) freely rotate for adjustment. The first rotary shafts (105) and the second rotary shafts (81) are arranged in parallel.

Description

technical field [0001] The invention relates to a sewage suction method for aquaculture ponds, and belongs to the technical field of water pollution control and treatment of pond aquaculture ecosystems. Background technique [0002] Studies have found that, except for 20%-30% of the nutrients such as nitrogen and phosphorus input into the water body are absorbed and utilized by aquatic organisms, the rest all enter the water body environment, and about 60-70% of them are deposited in the mud bottom. Bottom mud plays an important role in the pond aquaculture ecosystem. Because the sludge contains certain nutrients, it is directly beneficial to the growth and reproduction of microalgae and microorganisms. An appropriate amount of sludge has the effect of preserving fertilizer and buffering water quality. However, with the prolongation of the breeding cycle, a large amount of organic waste such as residual bait that has not been ingested and excreted feces is deposited in the b...

AI Technical Summary

Problems solved by technology

[0008] The technical problems to be solved in the present invention are: the existing pond suction method, the structure of the device is bulky and complicated, and the sewage suction capacity is insufficient; the water pump is fixed above the floating body, the whole structure is large in volume, it is inconvenient to disassemble and maintain, and special packaging is required for transportation. Packaging materials; the depth of each position of the pond is different, and the depth of the sewage suction device diving into the water cannot be adjusted, and the sewage suction effect is unstable

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