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Desinfecção de efluentes sanitários com uso de cloro: avaliação da formação de trihalometanos
| Content Provider | Semantic Scholar |
|---|---|
| Author | Pianowski, Eloisa Helena |
| Copyright Year | 2003 |
| Abstract | Environment pollution, more specifically water pollution, has been the topic of debates, meetings and much concern worldwide showing that there is a lot yet to be done. Releasing sewage water (even if treated and further disinfected) into the environment can also cause serious damage, especially if such disinfection is not carried out under strict control. Aiming at providing some collaboration to the issue, in this paper we assessed the production of trihalomethanes at different chloride concentrations (recommended in literature) for disinfection of sanitary sewage, using samples from the effluents of the Water Treatment Unit ETE Colombo-Sede. Run by Sanepar, the Unit is located in the city of Colombo, part of the Metropolitan Area of Curitiba, in Parana, and the treatment process consists of Fluidized Bed Anaerobic Reactor (FBAR) and an Anaerobic Biological Filter (ABF). Chloroform, bromoform, bromoiodinechloromethane, and dibromochloromethate contents were analyzed through gas chromatography. We observed that among the THMs analyzed, there was os elevados resultados obtidos na dosagem do cloroformio podem ser justificados pelas caracteristicas do efluente pesquisado Sanare. Revista Tecnica da Sanepar, Curitiba, v.20, n.20, p. 6-17, jul./dez. 2003 7 significant production of chloroform. The results of adding chlorine ranging from 4 to 30 mg/L, for a 30-minute contact period, were 16.80 to 936.40 g/L. However, for the addition of chlorine ranging from 6 and 10 mg/L – for a 21-hour contact period – chloroform concentrations were 347.60 and 474.30 g/L respectively, amounts way beyond the allowed limits. The high results for chloroform dosage may be justified by the characteristics of the effluent analyzed. We must stress, however, that with this paper we do not intend to contest the use of chlorine for disinfection purposes, since such technology is widely used in the country and is, currently, the most suitable one to our economic and cultural reality. |
| Starting Page | 6 |
| Ending Page | 17 |
| Page Count | 12 |
| File Format | PDF HTM / HTML |
| Volume Number | 20 |
| Alternate Webpage(s) | http://sanepar.com.br/sanepar/sanare/v20/art01.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
