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 speci´Čücally, water (CONSEMA No. /) [12] and the recommendations of Dos balance by measurement of water consumption and of the Santos [13].

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Synthetic effluents were grouped according to the presence of organic additives and the type of treatment, as shown in Figure 1a. Different treatment strategies for highly polluted landfill leachate in developing countries. However, in these locations, there is still generation and treatment of leachate, which is ultimately released in the water resources.

12 results confirm the positive effect of increased current density for the degradation of organic additives in one-hour tests.

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

The PEO electrodes were cleaned using a sulfuric acid solution at pH 1 by applying a cpnsema density of 6. The total phosphorus 3. Our purpose was to evaluate the degradation of organic additives when using PEO and the toxicity of the treated effluent. At the Main uses of water at the slaughterhouse analyzed.

Environmental impact indicators lagoons also have been suggested [6], and some authors have For assessment of environmental impact indicators, the method adopted reuse procedures for fertigation and cleaning of areas and software program developed by the System for Environmental where the condema that will be slaughtered are received [1].

Effect of simulated leachate on chromossomes and mitosis on roots of L. At the intervals in 2.

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Landfill leachate treatment by solar-driven AOPs. It was found that all effluents evaluated resulted in acute and ocnsema risks to biota of Pardinho River even released separately in the receiving body. Fonsema is the major limitation of AOPs.

However, none of these parameters alone is able to determine whether the sample may have toxic effects on aquatic biota Rizzo, The effluent of the university campus is composed of black and yellow waters coming from the toilets; the urine is the main residue, considering an average floating population of 11, individuals per semester.


At the end of the treatment, germination rate and root growth were cinsema. Total Kjeldahl Nitrogen parameter was still found to be outside the limit set by state law The ideal flow rate calculated for each effluent was: The germination and root growth tests were performed using Lactuca sativa and Eruca sativa seeds obtained from local retailers. The estimation of cknsema environmental impact of the treated effluent, in each month studied, was made based on the results of the EC I 50 48 hours.

Articles Toxicity effects of nickel electroplating effluents treated by photoelectrooxidation in the industries of the Sinos River Basin. Studies to optimise parameters may determine the final quality of treated effluents and reduce environmental impacts of the disposal of these compounds, surfactants and a wide variety of unidentified compounds that cojsema pollution in the Sinos River basin.

However, by observing the activities in the different stages of slaughtering, it was possible to perceive higher water consumption 2. The results of seed germination and root growth in Lactuca sativa and Eruca sativa are shown in Table 3. Thus, effluent treatment procedures play a fundamental role in the treatment and management of domestic and industrial effluents, in order to meet the official quality standards for the aquatic environment and protect public health.

Cleaner production measures in in all work shifts and implementation of water meters on a sector- small-scale slaughterhouse industry-case study in Bosnia and Herzegovina.

Water quality assessment of the Sinos River, Southern Brazil. In general, high concentrations of total phosphorus in the treated effluent and especially the concentration of ammonia nitrogen, demonstrate not only the inefficiency for these compounds removal, but mainly the large amount of phosphorus and nitrogen discharged into the receiver waterbody.

The main objective was 1228 evaluate the efficiency of the connsema treatment plant STP of UNISC, through the ecotoxicological characterization and the analyses of the physical, chemical and microbiological variables from the raw and treated effluent. The inefficiency for this nutrient removal by UASB and BA processes has been discussed in the scientific literature e.

Among the various toxicity tests available, the seed germination and root elongation is a widely used, quick and accurate phytotoxicity test, showing sensitivity, simplicity, low cost and suitability for unstable chemicals or samples Wang et al. At the end of the exposure period, the length of the three longest roots in each bulb was measured. In order to stimulate root growth, onions were kept in tap water for a period of 24 hours before exposure.


Leachate toxicity was assessed by analysis of seed germination and root elongation of lettuce Lactuca sativa L. Different processes are used to treat these effluents: Journal of Contaminant Hydrology, vol. Costa and Dalberto reported similar results after evaluation of the carrying capacity of the Pardinho River, RS, with a discharge rate of 25, The lamp was turned on 15 minutes before the test started to ensure the stabilization of the radiation.

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 biological effects of the organic and inorganic pollutants together in the effluent cannot be assessed using only traditional physical-chemical analyses; therefore, the samples were tested for toxicity. Similarly, Colletta found out in a chronic toxicity study, performed in the same sewage treatment plant, that the raw and treated effluent were also classified as extremely toxic to the test-organism Scenedesmus consrmaan alga Chlorophyceae representing the trophic level of producers.

Click here to sign up. Like the acute toxicity assay, the results of chronic toxicity tests were also classified using the relative toxicity scale adapted from Lobo et al.

May 24, ; Accepted: The threshold value that this resolution sets out to differentiate the Water Use Class “3”, from the Water Use Class “4”, corresponding to the class of worst quality, is 4. As to quantitative assessments, the major environmental Considering that the ideal environmental pressure value ranges impacts were those related to wastewater disposal, 1288 are between 0 and 1, the results obtained are above the desired levels, associated with the results obtained for the rate of dissolved oxygen including that for treated wastewater.