PMID- 32721283
OWN - NLM
STAT- MEDLINE
DCOM- 20200730
LR  - 20221207
IS  - 1095-8630 (Electronic)
IS  - 0301-4797 (Linking)
VI  - 270
DP  - 2020 Sep 15
TI  - Organic matter removal and ammonia recovery by optimised treatments of swine 
      wastewater.
PG  - 110692
LID - S0301-4797(20)30624-1 [pii]
LID - 10.1016/j.jenvman.2020.110692 [doi]
AB  - The organic matter and nitrogen contents of swine wastewater (SW) can be reduced 
      and, at the same time, a fertiliser as ammonium salt can be recovered by 
      wastewater treatments. One of the most promising technique is air stripping (AS). 
      However, the operational parameters (pH, temperature and air flow rate) of AS 
      must be optimised, in order to maximise the ammonia recovery and reduce the 
      requirement of chemicals and energy. In this study 27 batch tests at laboratory 
      scale were carried out on real SW, varying (individually or simultaneously) the 
      pH (not adjusted, 8 and 10), temperature (ambient, 40 and 60  degrees C) and flow rate 
      (0, 1 and 5 L(air) L(SW)(-1) min(-1)) of AS; the changes in soluble COD (sCOD) 
      and total ammonia nitrogen (TAN) concentrations were evaluated in response to the 
      parameters adjustments. For the tests including AS, the ammonium sulphate 
      recovered was also measured. In general (about 50% of the tests), more than 80% 
      of TAN was removed. Most of these tests were carried out with pH and temperature 
      control and AS at the highest flow rate; the highest efficiency was found for a 
      combination of chemical, thermal and aeration treatments. For a few tests with 
      the same process control, an increase (up to 50%) or a very limited (less than 
      10%) decrease of sCOD were detected; therefore, these treatments can be adopted 
      prior of anaerobic digestion of SW. A high flow rate, which increases the removal 
      efficiency of both sCOD and TAN, should be adopted, when AS is used as 
      pre-treatment of activated sludge or lagooning plants. Very high amounts (over 
      80% of the theoretical yield) of ammonium sulphate were recovered by AS at the 
      maximum air flow rate (5 L(air) L(SW)(-1) min(-1)), which would provide a 
      nitrogen fertiliser at a sustainable cost.
CI  - Copyright (c) 2020 Elsevier Ltd. All rights reserved.
FAU - Folino, Adele
AU  - Folino A
AD  - Mediterranea University of Reggio Calabria, Department "AGRARIA", Localita Feo di 
      Vito, I-89122, Reggio Calabria, Italy.
FAU - Zema, Demetrio Antonio
AU  - Zema DA
AD  - Mediterranea University of Reggio Calabria, Department "AGRARIA", Localita Feo di 
      Vito, I-89122, Reggio Calabria, Italy. Electronic address: dzema@unirc.it.
FAU - Calabro, Paolo Salvatore
AU  - Calabro PS
AD  - Mediterranea University of Reggio Calabria, Department "DICEAM", Via Graziella, 
      Localita Feo di Vito, I-89124, Reggio Calabria, Italy.
LA  - eng
PT  - Journal Article
DEP - 20200622
PL  - England
TA  - J Environ Manage
JT  - Journal of environmental management
JID - 0401664
RN  - 0 (Sewage)
RN  - 0 (Waste Water)
RN  - 7664-41-7 (Ammonia)
RN  - N762921K75 (Nitrogen)
SB  - IM
MH  - Ammonia/*analysis
MH  - Animals
MH  - Bioreactors
MH  - Nitrogen/analysis
MH  - Sewage
MH  - Swine
MH  - Waste Disposal, Fluid
MH  - *Wastewater
OTO - NOTNLM
OT  - Air stripping
OT  - Ammonium sulphate
OT  - Anaerobic digestion
OT  - Lagooning
OT  - Pre-treatment
OT  - Swine wastewater
EDAT- 2020/07/30 06:00
MHDA- 2020/07/31 06:00
CRDT- 2020/07/30 06:00
PHST- 2019/12/24 00:00 [received]
PHST- 2020/03/02 00:00 [revised]
PHST- 2020/05/02 00:00 [accepted]
PHST- 2020/07/30 06:00 [entrez]
PHST- 2020/07/30 06:00 [pubmed]
PHST- 2020/07/31 06:00 [medline]
AID - S0301-4797(20)30624-1 [pii]
AID - 10.1016/j.jenvman.2020.110692 [doi]
PST - ppublish
SO  - J Environ Manage. 2020 Sep 15;270:110692. doi: 10.1016/j.jenvman.2020.110692. 
      Epub 2020 Jun 22.