ACO Marine Data Sheet Maripur NF 2014
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ACO Marine Data sheet ACO Maripur NF - Advanced Wastewater Treatment Units IMO has adopted RESOLUTION MEPC.227(64) with revised guidelines for effluent standards and performance test procedures for sewage treatment plants. These guidelines, adopted in October 2012, which supersede resolution MEPC.159(55), include the standards of section 4.2 that specifically apply to passenger ships operating in MARPOL Annex IV special areas and which intend to discharge treated sewage effluent into the sea. The ACO Maripur NF range of advanced wastewater treatment plants are certified by DGÜV to IMO MEPC.159(55) and are offered IMO MEPC.227(64) [including §4.2] ‘ready’ prior to anticipated receipt of full certification in January 2015. Manufacturing, Test and Quality Management are certified to ISO 9001:2009 / ISO 9001:2008 and EC MED Module D. Process Description The main biochemical purification process occurs in the The main biochemical purification process occurs in the 1st 1st stage activation chamber. The biological cleaning based on stage activation chamber. The biological cleaning isis based on the action of aerobic bacteria which need a good distribution of the action of aerobic bacteria which need a good distribution of oxygen. During the aerobic mode organic pollution and oxygen. During the aerobic mode organic pollution and ammonia ammonia is removed. Simultaneous to the aerobic phase is the is removed. Simultaneous to the aerobic phase is the anoxic cycle anoxic cycle where nitrate is removed. Critical to the process is where nitrate is removed. Critical to the process is the balance of the balance of timing for the oxygenation and de oxygenating timing for the oxygenation and de-oxygenating cycles. cycles. Throughout the process the dissolved oxygen content is monitored Throughout the process the dissolved oxygen content is and regulated during the aerobic/anoxic cycle. monitored and regulated during the aerobic/anoxic cycle. Simultaneous aerobic nitrification and anoxic denitrification Simultaneous aerobic nitrification and anoxic denitrification is is the conversion the conversion of the ammonium ion toion to nitrogeninsideinside of the ammonium nitrogen gas gas the bioreactor. Denitrifying microbes re uire a very very oxygen the bioreactor. Denitrifying microbes require a low low oxygen concentration. Cyclic concentration. Cyclic aeration is therefore carefully balanced to aeration is therefore carefully balanced to ensure optimum nitrification and denitrification. ensure optimum nitrification and denitrification. iochemical phosphorus removal is achieved by dosing with Biochemical iron based coagulantsis achieved by dosing with aluminum or phosphorus removal which ensure the effective aluminum or of the phosphorous during the final filtration stage. precipitation iron-based coagulants which ensure the effective precipitation of the phosphorous during the final filtration stage. WASTE WATER INLET WASTE WATER INLET BARREL BARREL COAGULANT COAGULANT DOSAGE DOSAGE BUFFER SPACE BUFFER SPACE ACO NF Bio-Sword ACO NF Bio-Sword COMPARTMENT COMPARTMENT FW FILLING FW FILLING (OPTIONAL) (OPTIONAL)

ACO Marine Data sheet USCG Total suspended solids [mg/l] ACO Maripur NF test values The first stage is continuously re-circulated to the 2nd stage Bio-Sword compartment by means of the recirculation pump. This Bio-Sword compartment nd The first stage is continuously re-circulated to the 2 stage Bio-Sword compartment by means of the recirculation pump. This Bio-Sword compartment maintains a constant level by overflowing back into the first stage compartment. This feature allows for much greater flexibility during maintenance where it where it is no longer necessary to the entire contents of...