Electrochemical Treatment of Recirculating Aquaculture Wastewater Using a Ti/RuO2-IrO2 Anode for Synergetic Total Ammonia Nitrogen and Nitrite Removal and Disinfection

2016 ◽  
Vol 59 (6) ◽  
pp. 1831-1840 ◽  
Keyword(s):  
Electrochemical Treatment ◽  
Ammonia Nitrogen ◽  
Total Ammonia Nitrogen ◽  
Recirculating Aquaculture ◽  
Nitrite Removal ◽  
Total Ammonia ◽  
Aquaculture Wastewater

Treating Effect of Potassium Ferrate to Aquaculture Recirculating Water

2014 ◽  
Vol 1004-1005 ◽  
pp. 1005-1007
Author(s):  
Dong Xia Zhang ◽  
Qi Liu ◽  
Yong Ming Zhang
Keyword(s):  
Removal Rate ◽  
Sewage Treatment ◽  
Ammonia Nitrogen ◽  
Potassium Ferrate ◽  
Recirculating Aquaculture ◽  
Nitrite Removal ◽  
Total Ammonia ◽  
Treatment Agent ◽  
Aquaculture Development ◽  
Aquaculture Waste

Aquaculture waste water was a major sewage resource, and recirculating aquaculture is an important mode of aquaculture development. Potassium ferrate is a novel sewage treatment agent and the use of potassium ferrate as a aquaculture recirculating water purification agents had a very important significance in the theoretical and practical application. When the amount of potassium ferrate is 8mg / L, the removal rate of the total number of colonies is 98.8%, the removal rate of COD is 92.16%, 98.78%, and sulfide is 98.42%. For the total amount of ammonia and nitrite also has a certain effect, when the amount of potassium ferrate is 12mg / L, the nitrite removal rate was 44.61%, total ammonia nitrogen removal rate was 23.61%.

Nitrification in brackish water recirculating aquaculture system integrated with activated packed bed bioreactor

2010 ◽  
Vol 61 (3) ◽  
pp. 797-805 ◽  
Author(s):  
V. J. Rejish Kumar ◽  
Valsamma Joseph ◽  
Rosamma Philip ◽  
I. S. Bright Singh
Keyword(s):  
Packed Bed ◽  
Ammonia Nitrogen ◽  
Recirculating Aquaculture System ◽  
Removal Rates ◽  
Packed Bed Bioreactor ◽  
Term Operation ◽  
Total Ammonia Nitrogen ◽  
Recirculating Aquaculture ◽  
Aquaculture System ◽  
Total Ammonia

Recirculation aquaculture systems (RAS) depend on nitrifying biofilters for the maintenance of water quality, increased biosecurity and environmental sustainability. To satisfy these requirements a packed bed bioreactor (PBBR) activated with indigenous nitrifying bacterial consortia has been developed and commercialized for operation under different salinities for instant nitrification in shrimp and prawn hatchery systems. In the present study the nitrification efficiency of the bioreactor was tested in a laboratory level recirculating aquaculture system for the rearing of Penaeus monodon for a period of two months under higher feeding rates and no water exchange. Rapid setting up of nitrification was observed during the operation, as the volumetric total ammonia nitrogen removal rates (VTR) increased with total ammonia nitrogen (TAN) production in the system. The average Volumetric TAN Removal Rates (VTR) at the feeding rate of 160 g/day from 54–60th days of culture was 0.1533 ± 0.0045 kg TAN/m3/day. The regression between VTR and TAN explained 86% variability in VTR (P < 0.001). The laboratory level RAS demonstrated here showed high performance both in terms of shrimp biomass yield and nitrification and environmental quality maintenance. Fluorescent in-situ Hybridization analysis of the reactor biofilm ensured the presence of autotrophic nitrifier groups such as Nitrosococcus mobilis lineage, Nitrobacter spp and phylum Nitrospira, the constituent members present in the original consortia used for activating the reactors. This showed the stability of the consortia on long term operation.

scholarly journals Application of hybrid electrocoagulation–filtration methods in the pretreatment of marine aquaculture wastewater

2021 ◽  
Vol 83 (6) ◽  
pp. 1315-1326
Author(s):  
Jianping Xu ◽  
Yishuai Du ◽  
Tianlong Qiu ◽  
Li Zhou ◽  
Ye Li ◽  
...  
Keyword(s):  
Pore Size ◽  
Oxygen Demand ◽  
Ammonia Nitrogen ◽  
Marine Aquaculture ◽  
Recirculating Aquaculture ◽  
System A ◽  
Filtration System ◽  
Total Ammonia ◽  
Combination Modes ◽  
Aquaculture Wastewater

Abstract The aim of this study was to provide technical means and data support for enhancing the filtration pretreatment capacity of a recirculating aquaculture system. A continuous flow electrocoagulation (EC)–filtration system was designed and its application in the pretreatment of marine aquaculture wastewater was studied. The influences of anode combination modes, hydraulic retention times (HRTs) of the EC reactor and filter pore sizes on the water treatment capacity were investigated. Results showed that EC could significantly enhance the treatment efficiency of the filtration equipment used in subsequent steps. Al-Fe electrodes used as anode led to better processing capacity of this system, and the optimum anode was 3Al + Fe. With the increase of HRT and decrease of filter pore size, the enhanced effect of the EC process on the filter was more obvious. When the current density was 19.22 A/m2, the anode was 3Al + Fe, the HRT was 4.5 min and the filter pore size was 45 μm, the removal efficiency of the system for Vibrio, chemical oxygen demand, total ammonia nitrogen, nitrite nitrogen (NO2−-N), nitrate nitrogen (NO3−-N) and total nitrogen was 69.55 ± 0.93%, 48.99 ± 1.42%, 57.06 ± 1.28%, 34.09 ± 2.27%, 18.47 ± 1.88% and 55.26 ± 1.42%, respectively, and the energy consumption was (26.25 ± 4.95) × 10−3kWh/m3.

scholarly journals Phytoremediation of Eel (Anguilla bicolor bicolor) rearing wastewater using amazon sword (Echinodorus amazonicus ) and water jasmine (Echinodorus palaefolius)

Omni-Akuatika ◽  
2018 ◽  
Vol 14 (2) ◽  
Author(s):  
Hany Handajani ◽  
Widanarni Widanarni ◽  
Tatag Budiardi ◽  
Mia Setiawati ◽  
Sujono Sujono
Keyword(s):  
Inorganic Nitrogen ◽  
Ammonia Nitrogen ◽  
Average Weight ◽  
Total Ammonia Nitrogen ◽  
Randomized Design ◽  
Recirculation System ◽  
Total Ammonia ◽  
Completely Randomized Design ◽  
Aquaculture Wastewater ◽  
And Control

Management of aquaculture wastewater is still the major problems in fisheries, especially in intensive systems. Intensively aquaculture activities often increase organic matter and nutrients (N and P) in the water.  The study was conducted to evaluate the phytoremediator performance of Echinodorus amazonicus and Echinodorus palaefolius in removing inorganic nitrogen and orthophosphate from aquaculture wastewater with the recircula­tion system. This study used a completely randomized design with three treatments and 3 replications. The treatments of this study were P1: E. amazonicus,  P2: E. palaefolius and P3: control (without aquatic plants). The tested fish were elvers  which average weight 6.98 ± 0.19 g,  and  fish density was 4 gL-1. Elvers reared in an aquarium that containing 48 L in  a recirculation system. The paste feed which protein level of  45.25% was given at satiation 3 times/day. Elvers reared for 60 days. The results showed that E. palaefolius significantly reduced concentrations of total ammonia nitrogen (TAN), nitrite (NO2), nitrate (NO3) and orthophosphate (PO4) with an efficiency of 27.10 ± 2.42%; 45.03 ± 9.77%; 20.94 ± 1.29% and 14.19 ± 3.05%, respectively higher than E. amazonicus and control. The best result of elver’s performance (SGR and FCR) was in treatment P2 (E. palaefolius), i.e.  1.19 ± 0.18% and 1.57 ± 0.30. Based on the results of this study, it can be concluded that the use of E. palaefolius as phytoremediator in eel culture with recirculation system can removed inorganic nitrogen and orthophosphate more optimal compared to other treatment. 

scholarly journals Study of Biofilter Planted with Basil for Removal of Ammonia in Aquaponic Water

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Bharat Nandkumar Mulay ◽  
Konda Rajasekhar Reddy
Keyword(s):  
Water Quality ◽  
Ammonia Nitrogen ◽  
Quality Parameters ◽  
Coarse Aggregates ◽  
Total Ammonia Nitrogen ◽  
Coconut Husk ◽  
Significant Difference ◽  
Total Ammonia ◽  
Water Recirculation ◽  
Aquaculture Water

Abstract This experimental investigation of a laboratory scale aquaponic system included testing of a biofilter with basil plant as the biofilter part on aquaculture water quality. Irridescent shark was selected as aquaculture species. The biofilter consist of natural biomaterials such as coconut husk, coco peat, and coarse aggregates. The experiment was carried out for three short water recirculation durations of 2, 3, and 4 h/day. The influent and effluent ammonia NH3, total ammonia nitrogen (TAN), nitrites NO2 and nitrates NO3 levels were measured and analysed. The results showed that the biofilter effectively removed NH3 (65 - 71 %), TAN (34 - 58 %), and NO2 (60 - 67 %) from the aquaculture water. The dissolved oxygen (DO) levels were maintained between 3 - 7.0 mg/l during all the recirculation durations. The significance of water recirculation period was assessed by calculating the differences between the means of water quality parameters with a statistical test named one-way analysis of variance (ANNOVA) with significant level P taken as 5 %, i.e., P ≤ 0.5. The effluent mean NH3 levels 0.030 mg/l, 0.033 mg/l, and 0.022 mg/l exhibited significant difference at 4 h/d periods while effluent TAN levels 0.81, 0.77, and 0.77 showed no difference with varying periods.

Sign in / Sign up

Export Citation Format

Share Document