Patent ID: 6083386
Filing Date: 2000-07-04
Classification: C02F

Abstract:
A device for treating waste water from an animal husbandry site having a means for holding waste water and a means for holding recycled water, comprisinga separator, having a first inlet from the means for holding waste water from animal husbandry site, and a first outlet to a first filter, for removing solids having a size greater than about 100 to 300 microns in diameter, thereby yielding moist solid product and an effluent stream,the first filter having an inlet from the separator, a first outlet to a means for treating water to remove nitrogen and nitrogen derivatives, and a second outlet to a sludge treatment system, for filtering solids having a diameter of about 25-100 microns from water, thereby yielding a filtered effluent stream and a first sludge stream,the means for treating water to remove nitrogen and nitrogen derivatives having an inlet from the first filter, a first outlet to a second filter, and a second outlet to the sludge treatment system, yielding a filtered, treated water stream having reduced levels of nitrogen and nitrogen derivatives and a second sludge stream,the second filter having an inlet from the means for treating water to remove nitrogen and nitrogen derivatives, a first outlet, and a sludge outlet to the sludge treatment system, for separating particles of about 10 to 50 microns from a water stream, yielding an effluent which is filtered, treated water stream and a third sludge stream,a first means for treating water to remove pathogens having an inlet from the first outlet of the second filter, and an outlet to the means for holding recycled water at the animal husbandry site, wherein the second filter has an second outlet to a third filter, the third filter having an inlet from the second filter, and an outlet to a second pathogen treatment system, whereby a portion of the effluent stream from the second filter is returned to the means for holding recycled water at the animal husbandry site, and a portion flows to the third filter and second means for treating water to remove pathogens, for removing particles in the range of about 1 to 10 microns, the second means for treating water to remove pathogens having an inlet from the third filter and an outlet, for removing biological contaminants from a water stream, the combination of the second filter and the second means for treating water to remove pathogens yielding a potable water stream,the sludge treatment system comprising one or more sludge tanks having an inlet from the first filter, second filter, and the means for removing nitrogen and nitrogen derivatives, an additive reservoir and means for injecting an additive from the reservoir to the sludge tanks, and an outlet to the means for holding waste water.