scholarly journals Water Quality Control for Intensive Shrimp Culture Ponds in Developing Countries Using Ammonia-Nitrogen Uptake by Seaweed

2007 ◽  
Vol 40 (5) ◽  
pp. 454-462 ◽  
Author(s):  
Ryuichi Egashira ◽  
Kosuke Sato
Keyword(s):  
Water Quality ◽  
Developing Countries ◽  
Quality Control ◽  
Nitrogen Uptake ◽  
Ammonia Nitrogen ◽  
Water Quality Control ◽  
Shrimp Culture

Surveillance Solutions to Microbiological Problems in Water Quality Control in Developing Countries

1991 ◽  
Vol 24 (2) ◽  
pp. 61-75 ◽  
Author(s):  
B. J. Lloyd ◽  
J. K. Bartram
Keyword(s):  
Water Quality ◽  
Developing Countries ◽  
Quality Control ◽  
Critical Parameter ◽  
Control Methods ◽  
Surveillance Strategy ◽  
Water Quality Control ◽  
Water Testing ◽  
Spurious Results

Many developing countries are failing to apply standard water quality control methods developed over almost a century in Europe and N America. In the search for simpler and cheaper methods inaccurate and spurious results are being reported in at least 10 countries in the S E Asian and Pacific regions. In countries where WHO is now promoting the development of water quality surveillance and improvement programmes the application of standard methods indicate that typically 70-85% of small supplies are faecally contaminated. Beyond the Water Decade the focus on increased coverage needs to be amplified to include improvement of the quality of service. To achieve the necessary improvements the limitations in conventional microbiological and chemical quality control must be recognised. This paper provides examples of an integrated surveillance strategy for progressive improvement. This approach involves a much greater emphasis on sanitary inspection whilst complementary critical parameter water testing is placed in a supporting role.

Water quality control using Spirulina platensis in shrimp culture tanks

Aquaculture ◽  
2003 ◽  
Vol 220 (1-4) ◽  
pp. 355-366 ◽  
Author(s):  
Benjamas Chuntapa ◽  
Sorawit Powtongsook ◽  
Piamsak Menasveta
Keyword(s):  
Water Quality ◽  
Quality Control ◽  
Spirulina Platensis ◽  
Water Quality Control ◽  
Shrimp Culture

scholarly journals Biochar-immobilized Sphingomonas sp. and Acinetobacter sp. isolates to enhance nutrient removal: potential application in crab aquaculture

2020 ◽  
Vol 12 ◽  
pp. 251-262
Author(s):  
Y Shao ◽  
H Zhong ◽  
X Mao ◽  
H Zhang
Keyword(s):  
Water Quality ◽  
Quality Control ◽  
Inorganic Nitrogen ◽  
Ammonia Nitrogen ◽  
Experimental Methodology ◽  
Bacterial Strains ◽  
Water Quality Control ◽  
Surrounding Water ◽  
Recirculating Aquaculture ◽  
Recirculating Aquaculture Systems

The frequency of water exchange and reducing the risk of eutrophication to surrounding water bodies have always been water-quality control issues in recirculating aquaculture systems. In this study, maize straw biochar prepared through pyrolysis showed great potential for both bacterial immobilization and pollutant adsorption. Heterotrophic bacterial strains of Sphingomonas sp. PDD-57b-25 and Acinetobacter towneri were isolated in situ from wastewater for pollutant remediation through a 16S rDNA-based method, which has been rarely reported to date. The selected strains had higher ammonia nitrogen (NH4+-N, 63%), nitrite nitrogen (NO2--N, 38%), nitrate nitrogen (NO3--N, 25%) and total phosphorus (TP, 35%) assimilation capacities than those of other widely applied bacteria under similar medium conditions. In addition, more NH4+-N (+16%), NO2--N (+14%), NO3--N (+17%) and TP (+19%) was removed by biochar-immobilized isolated strains than dissociated strains, suggesting their use may provide a means of improving water-quality control in recirculating aquaculture. With specific additions (4 g l-1) of biochar-immobilized Sphingomonas sp. PDD-57b-25 and A. towneri, the dissolved inorganic nitrogen (approximately 0.45 mg l-1) and TP (approximately 0.09 mg l-1) levels were maintained below the clean water threshold for recirculating aquaculture of crab Eriocheir sinensis. Furthermore, the added strains exhibited high bio-safety and were capable of improving the yield and quality of crabs. Results indicate the potential applicability of biochar-immobilized Sphingomonas sp. PDD-57b-25 and A. towneri in agricultural sewage treatments. Further, the experimental methodology developed here may be used for the exploration of new strains for practical aquaculture.

IOT based water quality control and filteration system

2021 ◽  
Author(s):  
G. Manoj Kumar ◽  
S.E. Gouthem ◽  
A. Srithar ◽  
V. Surya Prakash
Keyword(s):  
Water Quality ◽  
Quality Control ◽  
Water Quality Control
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