Evaluation of Current Industry Practices for Maintaining Tomato Dump Tank Water Quality during Packinghouse Operations

2014 ◽  
Vol 38 (6) ◽  
pp. 2201-2208 ◽  
Author(s):  
Bin Zhou ◽  
Yaguang Luo ◽  
Ellen R. Turner ◽  
Qin Wang ◽  
Keith R. Schneider
Keyword(s):  
Water Quality ◽  
Tank Water

EVALUASI KUALITAS PERAIRAN DALAM PEMBENIHAN IKAN KERAPU TIKUS (Cromileptis altivelis) Di HATCHERY PERAIRAN TANJUNG RIAU BATAM

2018 ◽  
Vol 5 (2) ◽  
Author(s):  
Ratu Siti Aliah
Keyword(s):  
Water Quality ◽  
Water Supply ◽  
Good Condition ◽  
Brood Stock ◽  
Water Storage Tank ◽  
Water Quality Status ◽  
Set Up ◽  
Normal Status ◽  
Tank Water ◽  
Quality Status

An evaluation of the water quality at the hatchery of Tanjung Riau was conducted to understand the water quality status at the several place of the hatchery unit such as brood stock tanks, larva rearing tank, water storage tank, fi ngerling tank as well as the source of the water supply. The water quality status of Tanjung Riau generally is in a good condition to support the hatchery activities, but for turbidity and salinity were in the exceed and below the normal status and its infl uence on the spawning activity. To overcome the problem on the spawning of the brood stock, the improving of water supply with higher salinity and low turbidity should be set up to ensure the succeeded of the spawning.Key words : Water quality, grouper brood stock, hatchery,Tanjung Riau Batam

Identifying the major influences on the microbial composition of roof harvested rainwater and the implications for water quality

2007 ◽  
Vol 55 (4) ◽  
pp. 245-253 ◽  
Author(s):  
C.A. Evans ◽  
P.J. Coombes ◽  
R.H. Dunstan ◽  
T. Harrison
Keyword(s):  
Water Quality ◽  
Rainwater Harvesting ◽  
Urban Housing ◽  
Climatic Data ◽  
Microbial Composition ◽  
Relative Significance ◽  
Run Off ◽  
Urban Housing Development ◽  
Monitoring Protocols ◽  
Tank Water

Perceptions of the quality of roof harvested rainwater remain an impediment to widespread implementation of rainwater tanks on urban allotments. Previous literature reports on roof water quality have given little consideration to the relative significance of airborne environmental micro-organisms to roof catchment contamination and the issue of tank water quality. This paper outlines the findings of a recent study into the influence of weather on roof water contamination conducted at an urban housing development in Newcastle, on the east coast of Australia. Samples of direct roof run-off were collected during a number of separate rainfall events, and microbial counts were matched to climatic data corresponding to each of the monitored events. Roof run-off contamination was found to be under the strong influence of both wind speed and direction. The preliminary findings of an investigation currently under way into the microbial diversity of rainwater harvesting systems have also been presented. The results indicate that the composition of organisms present varied considerably from source to source and throughout the collection system. In all cases, evidence of faecal contamination was found to be negligible. The implications of these findings to the issues of tank water quality, health risk analysis and monitoring protocols have been discussed.

scholarly journals ASSESSMENT OF WATER QUALITY (PHYSICO-CHEMICAL) OF KANEKAL TANK, ANANTAPURAMU DIST., AP, INDIA.

1970 ◽  
pp. 08-15
Author(s):  
PHILIP HAROLD GUNDALA ◽  
JAYARAM NAIK V N ◽  
VENKATA RAMANAIAH KOLALA
Keyword(s):  
Water Quality ◽  
Domestic Sewage ◽  
Total Hardness ◽  
Chemical Parameters ◽  
Standard Methods ◽  
Physico Chemical ◽  
Free Carbon Dioxide ◽  
Calcium Magnesium ◽  
Tank Water ◽  
Magnesium Phosphates

Abstract: Different Physico-chemical parameters of Kanekal tank water, Kanekal were estimated from October 2012 to September 2014 to assess its quality. The different parameters like Temperature, pH, TDS, conductivity, salinity, dissolved oxygen, turbidity, alkalinity, free carbon dioxide, chloride, total hardness, calcium, magnesium, phosphates, sulphates, silicates, nitrites, nitrates, BOD and COD were carried out by standard methods. These parameters showed either positive or negative correlation between each other. The analysis revels these parameters are interrelated with each other. From the data it can be said that water of this tank is partially contaminated with human faeces, domestic sewage etc. Hence it is not good quality for culture of fish as well as drinking for animals.Keywords –Kanekal Tank, water quality, Physico-chemical parameters, BOD, COD

scholarly journals Comparison of water quality in live shellfish retail holding tanks

2016 ◽  
Author(s):  
Kelson Mah ◽  
BCIT School of Health Sciences, Environmental Health ◽  
Vanessa Karakilic ◽  
Fred Shaw ◽  
Lorraine McIntyre ◽  
...  
Keyword(s):  
Water Quality ◽  
Dissolved Oxygen ◽  
Consumer Health ◽  
Food Markets ◽  
Mean Values ◽  
Measuring Devices ◽  
Processing Plants ◽  
The Mean ◽  
Retail Food ◽  
Tank Water

  Background: Water quality in live retail shellfish holding tanks are vital in increasing shellfish quality and reducing risk of shellfish-associated outbreaks. Poor holding tank water conditions may not only cause mortality of shellfish, but also allow for harmful pathogens to contaminate the shellfish, proliferate in the holding tanks, and ultimately potentially affect consumer health. Shellfish are processed and handled at a variety of levels at the retail stage. Therefore, the purpose of this research project is to compare water quality in live retail shellfish holding systems between processing plants and retail food markets. Differences may indicate a need for attention at a particular level in order to effectively and efficiently reduce mortality and disease among shellfish, and thus potentially humans as well. Methods: 30 water samples were taken from the two types of locations with the help of the Department of Fisheries and Oceans (DFO), Ministry of Agriculture, and the BCCDC. These samples were tested for parameters including temperature, pH, nitrites, turbidity, and dissolved oxygen using a LaMotte Fresh Water Aquaculture Kit and a HACH 2100P turbidimeter. A two-tailed t-test was used to compare the means of each of the parameters among the two types of locations with live shellfish holding tanks. Results: The mean values for all parameters in both retail and processing met the requirements set by the BCCDC. However, temperature and dissolved oxygen showed statistically significant differences between retail markets and processing facilities. Nitrites, pH, and turbidity showed no statistically significant differences between the two types of locations. Conclusion: Differences in dissolved oxygen may have been due to salt levels, failing recirculation systems, or high levels of organic matter from sanitation issues. Differences in temperature may have been due to differences in holding tank size, or inconsistencies from using two different thermal measuring devices. High levels of nitrites were a concern as well due to overcrowding of holding tanks. More attention may be needed for these issues, especially during certain seasons such as Chinese New Years, in order to lower the risk to public health.  

scholarly journals Smart Two-Tank Water Quality and Level Detection System via IoT

Heliyon ◽  
2021 ◽  
pp. e07651
Author(s):  
Samuel C. Olisa ◽  
Christopher N. Asiegbu ◽  
Juliet E. Olisa ◽  
Bonaventure O. Ekengwu ◽  
Abdulhakim A. Shittu ◽  
...  
Keyword(s):  
Water Quality ◽  
Detection System ◽  
Tank Water

scholarly journals Evidence of Avian and Possum Fecal Contamination in Rainwater Tanks as Determined by Microbial Source Tracking Approaches

2016 ◽  
Vol 82 (14) ◽  
pp. 4379-4386 ◽  
Author(s):  
W. Ahmed ◽  
K. A. Hamilton ◽  
P. Gyawali ◽  
S. Toze ◽  
C. N. Haas
Keyword(s):  
Water Quality ◽  
Water Samples ◽  
Fecal Contamination ◽  
Microbial Source Tracking ◽  
Source Tracking ◽  
Fecal Dna ◽  
Potential Health ◽  
Gene Copies ◽  
Tank Water ◽  
Rainwater Tanks

ABSTRACTAvian and possum fecal droppings may negatively impact roof-harvested rainwater (RHRW) water quality due to the presence of zoonotic pathogens. This study was aimed at evaluating the performance characteristics of a possum feces-associated (PSM) marker by screening 210 fecal and wastewater samples from possums (n= 20) and a range of nonpossum hosts (n= 190) in Southeast Queensland, Australia. The host sensitivity and specificity of the PSM marker were 0.90 and 0.95 (maximum value, 1.00), respectively. The mean concentrations of the GFD marker in possum fecal DNA samples (8.8 × 107gene copies per g of feces) were two orders of magnitude higher than those in the nonpossum fecal DNA samples (5.0 × 105gene copies per g of feces). The host sensitivity, specificity, and concentrations of the avian feces-associated GFD marker were reported in our recent study (W. Ahmed, V. J. Harwood, K. Nguyen, S. Young, K. Hamilton, and S. Toze, Water Res 88:613–622, 2016,http://dx.doi.org/10.1016/j.watres.2015.10.050). The utility of the GFD and PSM markers was evaluated by testing a large number of tank water samples (n= 134) from the Brisbane and Currumbin areas. GFD and PSM markers were detected in 39 of 134 (29%) and 11 of 134 (8%) tank water samples, respectively. The GFD marker concentrations in PCR-positive samples ranged from 3.7 × 102to 8.5 × 105gene copies per liter, whereas the concentrations of the PSM marker ranged from 2.0 × 103to 6.8 × 103gene copies per liter of water. The results of this study suggest the presence of fecal contamination in tank water samples from avian and possum hosts. This study has established an association between the degradation of microbial tank water quality and avian and possum feces. Based on the results, we recommend disinfection of tank water, especially for tanks designated for potable use.IMPORTANCEThe use of roof-harvested rainwater (RHRW) for domestic purposes is a globally accepted practice. The presence of pathogens in rainwater tanks has been reported by several studies, supporting the necessity for the management of potential health risks. The sources of fecal pollution in rainwater tanks are unknown. However, the application of microbial source tracking (MST) markers has the potential to identify the sources of fecal contamination in a rainwater tank. In this study, we provide evidence of avian and possum fecal contamination in tank water samples using molecular markers. This study established a potential link between the degradation of the microbial quality of tank water and avian and possum feces.

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