2What is aquaponics?Aquaponics is an integrated system that combines hydroponics and aquaculture.In an aquaponics system, the waste water from aquaculture subsystem is used to fertilize plants, and the plants reduce nutrient levels in the water.
3Benefits of Aquaponics Reduce chemical fertilizer use for hydroponicsReduce water disposal for aquaculture operationControlled Environmental Agriculture benefits: year-round, local food production
4Challenges of Aquaponics pH compromise: plants grow best at pH of while fish grow best at pH ofTemperature compromise: optimal temperature for plants doesn’t match necessarily the optimal temperature for fishNutrient level in the fish water is low compared to plant nutrient needsElements in the fish waste are not in proper molecular ratios required by plants
5Objectives of Morrisville Aquaponics Project Demonstrate feasibility of an aquaponics system under controlled environment (greenhouse) in New York StateQuantify inputs and outputs of the systemMarket products
6Overview of the Morrisville State College Aquaculture Facilities Boiler buildingInstrument shedGreenhouseAquaculture Center (image from Bingmaps.com)
7Greenhouse The dimensions of the greenhouse are 30 feet by 60 feet The roof is made of double PE filmThe side walls are constructed of PVC panelThe structure is heated by hot-water (hydroponic) heating and cooled by a fan-and-pad systemThe horizontal air flow fans are used for air recirculationThere is an energy curtain for shading and energy conservation, insect screen and LED and high pressure sodium supplemental lighting
10Aquaculture Subsystem There are two 600 gallon fish tanks and one 800 gallon tank. Each tank is equipped with a solid removal device (bead filters),UV sterilizers, a biofilter, blower, settling tanks and pumps
12Lettuce growthIt takes 40 days to grow 5 ounces of lettuce. At full capacity, the Morrisville State College greenhouse could produce over 30,000 heads of lettuce annually.In 2012, the College controlled environment agriculture facility diversified its crops and grew over 6000 heads of lettuce, over 300 pounds of basil, bok choy, arugula, and 90 pounds of tomatoes and cucumbers.
13Tilapia growthIt takes about 8 months to grow a one pound tilapia. In 2012, the Morrisville State College controlled environment agriculture facility produced nearly 600 pounds of tilapia.
14Electricity and Fuel Usage In 2012, the Morrisville State College controlled environment agriculture greenhouse used about 147 kWh per day, for a total of 53,778 kWh annual energy.The two 300,000 BTU/hr boilers used 4,360 gallons of fuel oil to heat the greenhouse, fish tanks, monitoring shed, biodiesel production lab, and the boiler building. One of the two boilers now runs on biodiesel produced on campus!
15Biodiesel from Dining Hall Fryer Oil 6/25/2008Campus dining facilities use 2500 gallons of oil per year The boiler is operated by students and currently processes 50 gallons per batch with 1 to 2 batches per week The campus uses biodiesel for heating the greenhouse during the winter and for farm tractor fuel in the summer
16Water ConsumptionIn 2012, the controlled environment agriculture greenhouse used an average of 142 gallons of water per day, resulting in 51,975 gallons for the year
17Feasibility of Aquaponics While aquaponics is technically feasible, it remains economically challenging under the climate of New York State. Renewable energy options can improve the economics for aquaponics by using wastes as fuel for combined heat and power (CHP).Morrisville State College Biomass Gasification CHPMorrisville State CollegeDigester CHPMadison CountyLandfill CHP