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Application of Rotating Drum Screen in Fish Pond

At present, small ponds are mostly used for aquatic product cultivation. Since the water in small ponds is stagnant, it is necessary to frequently replace the water in the small ponds. When replacing, the pumps need to be operated for a long time, which will cause more damage to the aquatic products located in the ponds. Great impact, and the extracted water can only be discarded, causing a certain degree of waste. In order to solve the problem of water waste and realize the recycling of pond water, it is necessary to use a solid-liquid separation equipment suitable for pond water treatment-a rotating drum screen filter. The equipment filters the pond water, which can effectively remove fish food residues, fish and shrimp feces and other suspended pollutants in the culture water body, and reduce the content of harmful substances in the pond water.
Structure description of drum screen filter
The machine has a drum-shaped metal frame, the rotating drum rotates around a horizontal axis, on which is attached a support net and work made of stainless steel wire (or copper wire or chemical fiber wire).
 
Working process of drum screen filter
The work of the microfiltration machine consists of three processes: sewage inflow, filter screen and sludge discharge, filtered water discharge or enter the next treatment link.
 
Working principle of drum screen filter
When the drum is working, the treated wastewater enters the drum along the axial direction and flows out through the screen. The impurities in the water (fine suspended matter, fibers, pulp, etc.) are trapped on the inner surface of the drum filter. When the impurities trapped on the filter screen are brought to the upper part by the rotating drum, the impurities are flushed into the drain tank by the backwash water outside the screen and flow out to achieve solid and liquid phase separation.
During the operation of the drum-type precision filter, the viscous substances in the aquaculture water will gradually adhere to the filter screen, resulting in a smaller pore size of the filter screen and affecting the filtering capacity. Therefore, the replacement cost and convenience of the filter are important indicators for assessing the overall performance of the microfilter.

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