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| Registros recuperados: 22 | |
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| Motteran,Fabrício; Pereira,Erlon Lopes; Campos,Claudio Milton Montenegro. |
| This work evaluated the potential of the acidification equalization tank (AET) used as a primary treatment unit, treating the hog farming wastewater. The treatment system consisted of a degritter with a triangular-notch weir, for measuring the flow, a static sieve, and an acidification and equalization tank (AET), an anaerobic baffled reactor (ABR), an upflow anaerobic sludge blanket (UASB) reactor, a settling tank, a greenhouse for fertirrigation and two infiltration ponds. The AET had a net capacity of 8,000 liters, internally covered with asphalt blanket, worked based on surface loading rates application. The unit operated continuously, with its flow varying from 0.1 to 10 L s-1. To determine the efficiency, the following parameters were measured: pH;... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Swine effluent; Organic matter removal; Primary treatment; Pollution control; Inexpensive technologies. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000300017 |
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| Somerset, I. |
| At the 1964 National Shellfish Sanitation Workshop, Mr. Eugene Jensen presented a thought-provoking paper outlining the rationale for the depuration of shellfish. Mr. Jensen noted that "we are committed to the principal that shellfish must be as safe to eat as other ordinary food" and that "the problems of assuring the sanitary quality of coastal areas will increase rather than diminish. This is not the same as saying that pollution will increase" (Jensen, 1964). It is recognised that additional use of the waters and shore areas will have adverse impacts on the water quality and shellfish resource quantity and quality. If we are to maintain a program which will permit the consumer to eat shellfish in any form they choose, we must develop the means to... |
| Tipo: Text |
Palavras-chave: France; Bivalvia; Shellfish; Water quality; Legislation; Pollution control; Self purification; Public health. |
| Ano: 1992 |
URL: http://archimer.ifremer.fr/doc/1992/acte-1590.pdf |
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| Howell, T; Jones, S; Nardi, G. |
| A HACCP-based program is developed for the Spinney Creek Oyster Company (SCOC) Shellfish Purification Facility under a pilot program funded and implemented by the New England Fisheries Development Association (NEFDA). The SCOC Facility, which includes a government approved in-house coliform laboratory, is fully licensed for oysters and clams under State of Maine and NSSP regulations. SCOC's business is producing value-added, quality-assured shellfish for premium, health conscious markets. To accomplish this, SCOC uses shellfish harvested from approved waters which is an important distinction from other purification plants which process shellfish originating from restricted waters. It was necessary to create a flow chart of the various steps involved in the... |
| Tipo: Text |
Palavras-chave: Bivalvia; Pollution control; Public health; Methodology; Self purification; Shellfish; Marine molluscs. |
| Ano: 1992 |
URL: http://archimer.ifremer.fr/doc/1992/acte-1608.pdf |
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| Leal, Patrícia Lopes; Pinheiro Dadalto, Silvana; Fernandes, Rita de Cássia Rocha; Queiroz, Maria Eliana Lopes Ribeiro; Tótola, Marcos Rogério. |
| The effect of successive soil contamination with diesel oil was evaluated on population dynamics of a bacterial consortium (Acinetobacter baumannii LBBMA 04, Pseudomonas aeruginosa LBBMA 58, Ochrobactrum anthropi LBBMA 88b, Acinetobacter baumannii LBBMAES11, and Bacillus subtilis LBBMA 155) and on biodegradation of petroleum hydrocarbons (n-C12-C22). After each contamination with diesel oil, soil samples were collected for assessment of bacterial population and sequence of petroleum hydrocarbons degradation. At 20 and 40 days, the highest percentage of degradation was observed for the higher carbon chain hydrocarbons (n-C21 and C22). After the third contamination, there was a considerable reduction of n-C21degradation and a high degradation of hydrocarbons... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ciências Agrárias; Microbiologia; Biorremediação bioaugmentation; Biodegradation; Pollution control; Hydrocarbons. Ciências Agrárias I. |
| Ano: 2018 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/36904 |
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| Tissaoui, Ch.; Chouba, L.; El Abed, O.. |
| La Tunisie dispose d’une ressource importante en coquillages, plusieurs espèces sont commercialisées et elles ont fait l’objet de programmes de qualité pour la sauvegarde de la santé humaine. Dans ce contexte, nous avons réalisé un suivi saisonnier de la concentration de trois métaux traces toxiques, le cadmium (Cd), le plomb (Pb), et le mercure (Hg) dans la totalité de la masse molle, dans le pied et dans les viscères d’un Mollusque Gastéropode, l’Hexaplex trunculus communément appelé en Tunisie « Bakouma ». Les Hexaplex proviennent des golfes de Tunis et de Gabès et des lagunes de Bizerte et de Tunis durant la période 2003 - 2004. Les échantillons sont analysés par spectrométrie d’absorption atomique (SAA) à four graphite et à correction Zeeman (Varian... |
| Tipo: Journal Contribution |
Palavras-chave: Pollution monitoring; Trace metals; Pollution control; Http://aims.fao.org/aos/agrovoc/c_6078. |
| Ano: 2008 |
URL: http://hdl.handle.net/1834/4153 |
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| Lopez, Jorge Garcia; Sterner, Thomas; Afsah, Shakeb. |
| This paper evaluates the effectiveness of the Program for Pollution Control Evaluation and Rating (PROPER) in Indonesia. PROPER, the first major public disclosure program in the developing world, was launched in June 1995; though it collapsed in 1998 with the Asian financial crisis, it is currently being revived. There have been claims of success for this pioneering scheme, yet little formal analysis has been undertaken. We analyze changes in emissions concentrations (mg/L) using panel data techniques with plant-level data for participating firms and a control group. The results show that there was indeed a positive response to PROPER, especially among firms with poor environmental compliance records. The response was immediate, and firms pursued further... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Environmental policy; Pollution control; Public disclosure; Asia; Indonesia; Environmental Economics and Policy. |
| Ano: 2004 |
URL: http://purl.umn.edu/10482 |
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| Davies, Terry; Probst, Katherine N.. |
| Federal, state, and local governments are major polluters of the environment. They account for more than 7% of SO2 air pollution emissions and more than 5% of all NO2 air emissions in the United States. Public entities are more likely than private ones to be in violation of the Clean Water Act, and they account for two-thirds of all major facilities in significant noncompliance with the act. Department of Energy nuclear sites are the worst hazardous waste problems in the nation. A lack of adequate data makes it difficult to fully characterize the extent of pollution caused by government agencies and to compare the performance of the public and private sectors. There are many reasons why government pollution is difficult to regulate. The paper discusses... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Pollution control; Federal facilities; Regulation; Intergovernmental relations; Political Economy. |
| Ano: 2001 |
URL: http://purl.umn.edu/10594 |
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| Matos,A.T.; Pinho,A.P.; Costa,L.M.; Morris,L.A.. |
| Plot-scale overland flow experiments were conducted to evaluate the efficiency of streamside management zones (SMZs) in retaining herbicides in runoff generated from silvicultural activities. Herbicide retention was evaluated for five different slopes (2, 5, 10, 15, and 20%), two cover conditions (undisturbed O horizon and raked surface), and two periods under contrasting soil moisture conditions (summer dry and winter wet season) and correlated to O horizon and site conditions. Picloram (highly soluble in water) and atrazine (moderately sorbed into soil particles) at concentrations in the range of 55 and 35 µg L-1 and kaolin clay (approximately 5 g L-1) were mixed with 13.000 liters of water and dispersed over the top of 5 x 10 m forested plots. Surface... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Pollution control; Silviculture; Pesticides; Runoff. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582008000100014 |
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| Hoel, Michael; Karp, Larry S.. |
| We compare the effects of taxes and quotas for an environmental problem in which the regulator and polluter have asymmetric information about abatement costs, and the environmental damage depends on the stock of pollution. We thus extend, to a dynamic framework, previous studies in which environmental damages depend on the flow of pollution. As with the static analysis, an increase in the slope of the marginal abatement cost curve, or a decrease in the slope of the marginal damage curve, favors taxes. In addition, in the dynamic model, an increase in the discount rate or the stock decay rate favor the use of taxes. Taxes certainly dominate quotas if the length of a period during which decisions are constant is sufficiently small. An empirical illustration... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Pollution control; Asymmetric information; Taxes and quotas; Stochastic control; Environmental Economics and Policy; H21; Q28. |
| Ano: 2001 |
URL: http://purl.umn.edu/25010 |
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| Armijo, Julien; Oerder, Vera; Auger, Pierre-amaël; Bravo, Angela; Molina, Ernesto. |
| In 2016, a massive harmful algal bloom (HAB) of Alexandrium catenella around Chiloé island caused one of the major socio-ecological crisis in Chilean history. This red tide occurred in two distinct pulses, the second, most anomalous, bursting with extreme toxicity on the Pacific coast, weeks after the highly controversial dumping off Chiloé of 4,700 t of rotting salmons, killed by a previous HAB of Pseudochattonella verruculosa. We study the transport of this pollution, analyzing the physical oceanographic conditions during and after the dumping. We find that a cyclonic gyre was present between the dumping site and the coast, visible in satellite altimetry and sea surface temperature data. Using Lagrangian simulations, we confirm that near-surface currents... |
| Tipo: Text |
Palavras-chave: Harmful algal blooms; Aquaculture; Pollution control; Ocean transport; Ecological crisis; Risk management. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00593/70486/69183.pdf |
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| Registros recuperados: 22 | |
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