Page 314 of AES Mastercatalog by Aquatic Eco-Systems

degassing columns nitrogen gas can kill fish at only 3 above saturation degassing columns are used for removing nitrogen hydrogen sulfide carbon dioxide or other gases from water they also add oxygen to undersaturated water in most areas well water ground water is low in oxygen and too high in nitrogen hydrogen sulfide and carbon dioxide in recirculating aquaculture where pure oxygen is used carbon dioxide levels can rise to narcotic or toxic levels degassing columns are the best way to strip out undesirable gases the hydraulic design and high surface area of these units make them very suitable for tricking biofilters for ammonia removal our unique segmented packed columns are the result of extensive research and development by the canadian government they are simple economical and will last for many years each segment is made of heavy-duty uv-resistant polyethylene for outdoor use they are engineered to produce the ideal flow pattern to prevent wall channelization while exchanging air at each segment install just the number of segments to give the water quality needed each segment can receive as much as 150 gpm with excellent aeration and gas stripping results each segment 16 d x 18 h has a molded bracket that fits onto an optional hanger the 6 h x 4 w hanger is a fiberglass i-beam predrilled for 4 segments bolts included snap the segments onto the hanger and either hang it from the ceiling attach it to the tank wall or to a post so the water goes in the top and exits directly into the tank each segment should be filled with .6 cubic feet of biomedia sold separately see index we recommend bf44a ship wt each shearwater® degasser to 150 gpm the shearwater® degasser is rugged roto-molded using high-density polyethylene and is designed for stacking note that when stacking units only one lid is necessary removes carbon dioxide co2 nitrogen n2 hydrogen sulfide h2s and other volatile gases from the water while adding oxygen setup is simple attach the water input lines using flexible couplings three 2 water inlets provided will handle up to 50 gpm each vinyl dryer hose connects the air blower 4 outlet 3 inlet which provides required airflow for up to 150 gpm minimum of 5:1 ratio of air to water one blower may be used with one degasser at 150 gpm or with three degassers if the water flowrates are 50 gpm each sold with 4 ss mounting eyes each unit requires 4 cubic feet of bio barrel media bf44 we suggest placing the media in three mesh bags bf167 to simplify maintenance an optional 17 long stainless steel hanger dgb17 and cables facilitate hanging from above overall height of unit is 38 estimated max weight in operation is 8090 lbs our dgblower not included is a high-quality marine-duty unit with a pipe-fitting inlet and outlet 4 hose that can be mounted virtually anywhere 115v/60 hz 173 watts note the shearwater® degasser has been designed for typical clean water aquacultural conditions when using in unusual cases systems with high levels of alkalinity heterotrophic and green water applications etc you may want to oversize the system by adding an appropriate safety factor call aes if you have questions ship wt specialty filtration degassing ab12 ab12a packed column segment optional hanger 5 lbs 15 lbs 52.20 142.00 46.84/6 133.44/3 dg4 dg41 dgb17 dgblower bf44 degasser w/lid degasser w/o lid 17 hanger blower bio barrel media 60 lbs 57 lbs 4 lbs 11 lbs 6 lbs 372.00 333.00 62.00 330.00 28.80 spray nozzles high flow these high-flow low-pressure nozzles distribute water uniformly and are clog resistant they are used in cooling towers trickle biofilters spray aeration and foam knockdown unlike the ces15 and ces2 the lhd2 spray pattern is ces2 open cone meaning most of the water is thrown to the outside of the pattern add one of the following letters to the part number to indicate orifice size a=3/4 b=7/8 c=1 d=11/8 e=11/4 f=11/2 see price block for thread size ces15 cone pattern inlet inlet water oxygen 57 nitrogen 110 outlet water after 1 segment outlet water after 2 segments outlet water after 3 segments outlet water after 4 segments outlet water after 5 segments 76 84 89 92 94 106 104 103 102 101 ces2 ces15 lhd2 ls nozzles square round square 2 mnpt 11/2 mnpt 11/2 mnpt 15.75 5.35 3.50 lhd2 orifice diameter inches head pressure ft water 1 3/4 7/8 1 6 1 6 1 11/8 6 1 11/4 6 1 11/2 6 6 1 refers to of saturation nitrogen varies with season so we suggest designing for the worst case as low as 103 nitrogen can kill fish ab12 results are from a formal study conducted by the canadian government ces15 gpm ces2 gpm lhd2 gpm 7 8 17 10 25 13 33 17 42 22 52 18 12 28 16 38 23 52 26 58 37 93 10 23 12 27 15 35 19 46 24 58 35 86 order online aquaticeco.com order by phone 877-347-4788 tech support 407-598-1401 311

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