| 主权项 |
1. A fish culturing system, comprising:
an elongated culture tank having a pair of spaced, elongated sidewalls, a pair of short sidewalls connected to opposing ends of the elongated sidewalls, and a bottom; a water return manifold extending along an upper portion of each of the elongated sidewalls and an upper portion of at least one of the short sidewalls, the water return manifold having a channel to facilitate water flow therein, and a plurality of openings formed along at least a portion of the water return manifold extending along the corresponding elongated sidewall, each opening communicating with an interior of the culture tank, the water return manifold having a plurality of internal baffles installed at select positions along the water return manifold to define water flow paths; a waste output manifold extending along a lower portion of each of the elongated sidewalls, the waste output manifold having a channel to facilitate flow of waste water therethrough, and a plurality of openings formed along at least a portion of the waste output manifold extending along the corresponding elongated sidewall, each opening communicating with the interior of the culture tank along the bottom thereof; a multi-stage filter system, the multi-stage filter system having a biofilter tank, the multi-stage filter system adapted to clean and filter the waste water to remove solid wastes and harmful levels of chemicals, the multi-stage filter system adapted to feed filtered water into the culture tank through the water return manifold, wherein the multi-stage filter system includes a first filtering assembly for removing solid wastes and a second fluidized biofilter assembly for removing potentially harmful levels of ammonia, wherein the first filtering assembly comprises:
i) a drum filter operatively coupled to the waste output manifold and the biofilter tank;ii) an inlet pipe extending from the drum filter to the waste output manifold, the inlet pipe facilitating flow of waste water into the drum filter;iii) a drain pipe extending from the drum filter to a drain to remove filtered solid waste material; andiv) an outlet pipe extending from the drum filter to the biofilter tank, the outlet pipe facilitating flow of clarified water from the drum filter to the biofilter tank;wherein the second fluidized biofilter assembly comprises:
the biofilter tank integral with the culture tank; a first air uplift assembly coupled to the outlet pipe from the drum filter and extending into the biofilter tank, the first air uplift assembly drawing clarified water from the outlet pipe and into the biofilter tank; a plurality of biofilter media disposed inside the biofilter tank, the plurality of biofilter media having a relatively large combined surface area for bacteria to reside and grow, the bacteria processing the clarified water to remove ammonia; an air diffuser assembly extending from the air pipes into the biofilter tank, the air diffuser assembly to aerate and lift the clarified water to induce opposing current flows in the water in the biofilter tank; and a second air uplift assembly extending from a bottom of the biofilter tank and into the water return manifold, the second air uplift assembly drawing filtered water in the biofilter tank and transferring the filtered water to the water return manifold to be dispensed back into the culture tank; an air manifold associated with the culture tank and the biofilter tank, the air manifold having an inlet adapted to be coupled to a source of compressed air, a plurality of air pipes adapted to supply air to the fish culturing system, and a plurality of air tubes extending at least into the culture tank and the biofilter tank to aerate and lift the water contained in the culture tank and the biofilter tank to oxygenate the water, induce opposing current flows in the water and facilitate transfer of water in the fish culturing system; at least one first clean-out access port coupled to the water return manifold, the at least one first clean-out access port providing selective access for a cleaning implement to remove clogging material; at least one second clean-out access port coupled to the multi-stage filter system, the at least one second clean-out access port providing selective access for a cleaning implement to remove clogging material in the waste output manifold; and a variable overflow pipe having one end mounted to an interior of the biofilter tank, the variable overflow pipe being selectively moveable to raise or lower an opposite end of the variable overflow pipe to drain water from the fish culturing system to compensate for an uneven water level in the fish culturing system, the variable overflow pipe having at least one opening to drain the water therethrough. |
