Mean concentration of the characterization parameters of raw and treated wastewaters and comparative analysis with the CONSEMA/RS /06 and UWTD. When we observe the resolution of CONSEMA (/) concerning the liquid effluent discharge conditions in receiving water body, they may. More specifically, water (CONSEMA No. /) [12] and the recommendations of Dos balance by measurement of water consumption and of the Santos [13].

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The percentage removal was calculated using Equation1where initial [Ni] 0 and final [Ni] f nickel concentrations were used:.

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Due of these results, the final sample of PEO3 min, in which pH8. To estimate the potential environmental impact of the treated effluent into the cosema waterbody, the Lajeado Stream, the methodology described in CETESB was used, which considers situations of dry weather, that is, minimum flowrate of 7 days and turnaround time of conseka years Q 7, The light source was a mercury vapor lamp of W [2] whose bulb was removed and replaced with a quartz tube measuring 5 cm in diameter [3].

Environment and Progress, vol. Regarding the toxicity of leachate, additional knowledge is required in order to address the potential toxicity of untreated leachate and the efficiency of treatment technology considering the influence of environmental conditions on the dynamics of the decomposition processes that take place in the landfill.


Root elongation was significantly lower in A. Leachate toxicity was assessed by analysis of seed germination and root elongation of lettuce Lactuca sativa L.

The data were obtained using the interaction matrix derived from the Leopold matrix [9,10].

Evaluation of phytotoxicity of municipal landfill leachate before and after biological treatment

In the basin area, there are factories and plants, of which are metallurgical plants. The experimental system is shown in Figure 1b. This study evaluated the photoelectrooxidation PEO treatment of nickel electroplating effluents. Studies have found that the lettuce seed is very sensitive to the presence of metals and organic compounds, which makes it suitable for testing the toxicity of effluents Wang, ; Toussaint et al. The removal of these organic additives from effluents before their discharge into rivers may contribute to the reduction of pollution of water resources.

From the point of view of acute ecotoxicology, the results indicated the need for adjustments in the operational processes UASB and BA, as they proved to be inefficient compared to the raw effluent toxicity. The diagnostic stage revealed that the scalding, pre-chilling, separated points of wastewater Available online 20 May disposal for the wastewater treatment plant and disposal of treated and non-reused wastewater were critical for water management.

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Journal of Environmental Management, vol. CP measures Based on the diagnosis, the critical points of environmental 2. Resources, Conservation and Recycling, vol.


This was the lowest absorption among the spectra showed in Figure 3. However, organic additives 1228 molecules that may persist after conventional treatment, which makes removal difficult and expensive Fu and Wang, May 24, ; Accepted: United States of American.

Figure 2a describes the results of the analysis of total organic carbon TOCinorganic carbon IC and total carbon TC for all effluents.

How to cite this article. The discharge Q 7, 10 has been used as reference in studies to define criteria for toxic effluents emissions. Prognoses for cleaner production based on water management were Accepted 7 April established. At the end of the treatment, germination rate and root growth were estimated. Centro Nacional treatment system, which has a wastewater volume of de Tecnologias Limpas; Synthetic effluents were grouped according to the presence of organic additives and the type of treatment, as shown in Figure consemq.

Hazard assessment of landfill leachate is traditionally based on the evaluations of individual chemicals identified through chemical analysis. Spectrometric identification of organic compounds.

L —1 g. The results indicated acute toxicity with an EC I 50 48 hours average of