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  • 1
    Publication Date: 2021-05-19
    Description: This report intend to know, if BOD5 of fishing industry waste waters,follows a similar and proportional behavior to different temperatures and from incubation times, where the oxidative processes of organic matter are experimentally developed and to obtain a mathematical equation that allows us to know the job stream necessary, when diminishing the experimental time, if we accelerated the processes by means of thermal increases; besides to determine which of the propose methodologies in the bibliography, is the one that explains better the phenomenon of the BOD completes and the deoxygenating constant, important parameters to design any type of system of treatment to the liquid waste waters of the fishing industry. Finding this relation, will be able to be diminished the working time and increase the number of analysis to make, which helped to obtain evaluations of the environmental quality in short periods of time, besides to represent a rationalization of the analytical working time.
    Description: Published
    Description: BOD
    Keywords: Waste water ; Industrial wastes ; Waste water ; Industrial wastes ; Fishery industry
    Repository Name: AquaDocs
    Type: Proceedings Paper
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  • 2
    Publication Date: 2021-05-19
    Description: The present paper involves their results in the pollutant contributions to the aquatic ecosystems according to the products processed in different productive facilities of the Cuba Island, and concerning to the most significant fishing resources as lobster, white shrimp, tuna, shark, snapper, mackerel, jack and bill fish. The polluting loads in 12 years (between 1955 and 1999) respond to the indicators BOD, QOD, TP, TNK and N-NH4. The captures for those years were approximately between 3 950 and 23 970 tons, with fluctuations of BOD loads between 56 and 342 tons and of DQO between 111 and 676 tons. The principal nutrients contribution was the nitrogen, followed by the phosphorous and finally the ammonium, representing a total contribution of 136,3; 52,7 and 18,0 tons respectively in those 12 years. For the purification of this pollutant concurrence is necessary 600 tons of oxygen that is in correspondence with a contribution of 100 x 106 m3 of seawater, insinuating the impracticable of a natural purification process. The report culminates with the possible affectations caused by discharges of polluted waters on the ecosystems, recommending the use of the information offered in this document, with the objective to elaborate the future plans that allow to establish environmental programs, as well as to estimate the treatment system effectiveness operation, required to implement in the Cuban fishing industry.
    Description: Published
    Keywords: Waste water ; Environmental impact ; Fishery industry ; Waste water ; Environmental impact
    Repository Name: AquaDocs
    Type: Proceedings Paper
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  • 3
    Publication Date: 2021-05-19
    Description: Due to the necessity to protect the surrounding environment and very specially the inner and coastal waters, were studied different wastewaters systems for their application in facilities without treatment plants. In the very special case of the fishing industry, where only 14 establishments (from 42 active up to the moment) have treatment system, one requires of the study of different alternatives that contribute with the diminishing of the polluting load until permissible values. By such reasons, in addition to the study that was doing to explore and propose a treatment system by high rate pond with the microalgae Chlorella spp., empirical and kinetic equations were calculated using biochemical oxygen demand values, with the objective to facilitate the prediction of the system efficiency, as well as its design. For the calculation of the empirical equations, the applied and removed organic superficial loads and the applied and removed organic volumetric loads were taking into consideration. On the other hand, it was verified that the first order equation for a batch system adjusts to the purifying process that took place into the system, with the average value for the kinetic constant of the process of 0,47 d -1. The results obtained in this study demonstrate the possibilities having the high rate ponds for the wastewater treatment of the Cuban fishing industry and the knowledge of some design parameters.
    Description: Published
    Keywords: Wastewater treatment ; Fishery industry ; Wastewater treatment
    Repository Name: AquaDocs
    Type: Proceedings Paper
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