Fluctuation of Microcystins in Water Plant

Jia, Ruiquan; Zhang, X. H.; Zhang, Wenhui; Zhang, G. M.; Wang, Z. S.

doi:10.1081/ese-120025837

Cited by 7 publications

(5 citation statements)

References 2 publications

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“…En esta última muestra, la disminución en el nivel de microcistina se podría explicar por la acción degradativa o inhibitoria de agentes químicos en el agua tratada que han sido agregados para el control de otros microorganismos, y que tienen efecto comprobado sobre la microcistina (Jia et al 2003, Kull et al 2004.…”

Section: Discussionunclassified

Microcistina en plantas de tratamiento de agua para consumo humano en un ambiente tropical: el Área Metropolitana de Costa Rica

López

Villa²

2013

RBT

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Microcystin in plants that treat water for human consumption in a tropical environment: the Metropolitan Area of Costa Rica. We measured microcystin levels in water of the Metropolitan Area of Costa Rica by competitive inhibition ELISA and we quantified total coliforms, fecal coliforms, Escherichia coli (by a Most Probable Number method) and aerobic count. We wanted to identify any cyanotoxin correlation with these parameters, as a public health risk. We sampled in the rainy season of 2003 (April-October) and in the dry season of 2004 (February-March) (30 samples/season). We sampled pre-treated, semi-treated and treated water. Microcystin levels < 0.5 ppb were found in the rainy season (and > 0.5 ppb in the dry season). Dry season levels exceeded World Health Organization limits (1.0 ppb). Cyanotoxins occurred in the Tres Ríos plant. We did not find a correlation between these microbiologic parameters of water quality and microcystin levels in water. Rev. Biol. Trop. 54 (3): 711-716. Epub 2006 Sept. 29.

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Section: Discussionunclassified

Microcistina en plantas de tratamiento de agua para consumo humano en un ambiente tropical: el Área Metropolitana de Costa Rica

López

Villa²

2013

RBT

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“…The Municipality is also imposing increasingly stringent standards on the outputs of its treatment plants (Shanghai Water Supply Trade Association, nd). Despite these innovations, water treatment technology in Shanghai lags behind that of many cities, and fails to remove such contaminants as microcystins, perfluorinated compounds, and harmful mutagens (Tao et al, 1999;Jia et al, 2003;Shen et al, 2003;Mak et al, 2009), a problem compounded by aging and substandard pipes.…”

Section: Shanghai's Watermentioning

confidence: 99%

Constructing Water Shortages on a Huge River: The Case of Shanghai

Webber

Barnet

Chen

et al. 2015

Geographical Research

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Shanghai is located on the world's third largest river (by volume). Yet it faces the risk of shortages of drinking water. Many decisions and environmental characteristics have contributed to this threat. First, Shanghai has become dependent on water brought into the municipality by rivers. Second, it has become increasingly reliant on water from the Changjiang (Yangzi River), principally in order to control the levels of pollution in the water that enters its treatment plants. Third, for reasons associated with inter‐provincial administrative arrangements, the city's water intakes are located within the municipality, within the estuary zone and subject to tidal intrusions of salt water. Fourth, at high tide and when the Changjiang's discharge is low, salt intrudes far into the estuary, beyond the current water intakes. If sea levels rise, these intrusions will become more pronounced. Fifth, large‐scale central government infrastructure projects (such as dams and the South‐North Transfer) are altering the hydrological characteristics of the river. Such projects raise the probability of salt water intrusions into the water intake zone. The Shanghai and central governments have thus made a series of decisions that, taken together, have led the municipality to rely on a source of drinking water that is increasingly unreliable and subject to the risk of shortages due to salt water intrusions. Why these decisions have been made – independently – is an important problem for those who would understand the provision of water for cities and the practical efficacy of Chinese governance systems.

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“…Huertas et al (2003) carried out experiments to evaluate the efficiency of advanced water treatment in removing indicator organisms Bacillus subtilis and Coliphage MS2. Jia et al (2003) investigated the distribution and variation of microcystins from a water resource to a water plant.…”

Section: Mixed Processesmentioning

confidence: 99%

Physico‐Chemical Processes

Ahmad¹,

Begum²,

Hoek³

et al. 2004

Water Environment Research

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In this chapter, the physicochemical processes used in the treatment of aqueous streams such as domestic and industrial wastewaters, drinking water, contaminated groundwater, and aqueous residuals from soil treatment are reviewed. Processes that have their own chapter in the WEF review are not included in this chapter. MEMBRANE PROCESSES GENERALMembrane technology is widely accepted as a means of producing various qualities of water from surface water, well water, brackish water, and seawater.Membrane technology is also used in industrial processes and in industrial wastewater treatment, and lately membrane technology has moved into the area of treating secondary and tertiary municipal wastewater and oil field produced water (Nicolaisen, 2003). In many cases one membrane process is followed by another with the purpose of producing water of increasing purity and quality for various purposes. One type of membrane may thus enhance the function of another to meet goals ranging from disposal of wastewater to production of drinking water from alternative sources. 824 Membrane technologies offer the possibility of managing the total water resources in a region, which is of special interest in geographical areas where natural water resources are scarce. A recent project entitled Novel Technologies for Drainage Water Treatment financed by Egyptian Academy of Scientific Research and Technology (ASRT) and executed by National Research Center (NRC) comprised a detailed assessment of the desalting technologies for reclamation of agricultural drainage water (ADW) (Abulnour et al., 2003). This paper addresses the comparative techno-economics of the following systems (a) activated carbon (AC)-ultrafiltration (UF)-reverse osmosis (RO), (b) UF-electrodialysis reversal (EDR)-RO, (c) AC-ED-ion exchange (IE), (d) microfiltration (MF)-UF-RO1-RO2 and (e) slow sand filtration (SSF)-AC-IE. The results reveal that treatment scheme (d) MF-UF-RO1-RO2 provides the lowest cost production of high quality water. The most important recommendations point to the importance of field demonstration in selected locations to explore system reliability and performance under actual applications.The increasing need for water in arid regions of the world has resulted in the emergence of new water re-use technologies. The success of water re-use projects however, does not just depend on the effectiveness and suitability of the technology, but also on the presence of an institutional framework that ensures that the treated water can be distributed and used safely and efficiently. These two diverse issues were examined by MWH in projects carried out in Egypt and in the USA (Lawrence et al., 2003). One project in the East Bank of Cairo assessed the potential benefits of treated wastewater for irrigation in agricultural schemes. The project demonstrated enhanced 825 crop yields but that additional treatment of the wastewater was required to improve its microbiological quality to the standards required by both international and Egyptian legislation for safe re...

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Fluctuation of Microcystins in Water Plant

Cited by 7 publications

References 2 publications

Microcistina en plantas de tratamiento de agua para consumo humano en un ambiente tropical: el Área Metropolitana de Costa Rica

Microcistina en plantas de tratamiento de agua para consumo humano en un ambiente tropical: el Área Metropolitana de Costa Rica

Constructing Water Shortages on a Huge River: The Case of Shanghai

Physico‐Chemical Processes

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