2 results about "Mechanical filter" patented technology

The invention provides a monitor for the stoppage of mechanical filter, belonging to a monitoring device, which comprises a pressure sensor in liquid inlet pipe, another sensor in liquid inlet cavity of mechanical filter, and a third pressure sensor in liquid outlet cavity, every pressure sensor being equipped with the carry-in terminal of micro processor, the outlet of which is separately equipped with a display and a alarm, and the display being used to monitor the stoppage state of mechanical filter continuously and precisely. With the monitor people can control the mechanical filter actively according to the stoppage state.

The invention relates to the field of aquiculture, particularly a young shrimp culture seawater circulating utilization plant and method. The young shrimp culture seawater circulating utilization plant comprises a young shrimp culture tank, a pressure pump, a biochemical ammonia nitrogen removal device, a mechanical filter and an ultrafilter, wherein the ultrafilter is provided with a sewage outlet and a pure water outlet; the sewage outlet communicates with the biochemical ammonia nitrogen removal device; and the pure water communicates with the young shrimp culture tank. The young shrimp culture seawater circulating method comprises the following steps: 1) pumping and pressurization: pumping out seawater in the young shrimp culture tank and pressurizing by the pressure pump, wherein the pressure is controlled at 3-5 MPa; 2) ammonia nitrogen removal: sending the pressurized seawater in the step 1) into the biochemical ammonia nitrogen removal device through the water inlet; 3) impurity removal: introducing the seawater treated by the step 2) into the mechanical filter to perform preliminary filtration; and 4) ultrafiltration and diversion: introducing the seawater obtained in the step 3) into the ultrafilter for filtration.