Abstract
The water chemistry, toxicity, and biodegradation of wastewater from an industry producing mineral fibres for thermal insulation were studied. Values for COD, BOD 5, suspended solids, and phenol exceeded permissible values for the wastewater discharged into a nearby river and acute toxicity was also detected. Consequently, the effluent should be treated in a municipal wastewater treatment plant so its ready biodegradability was investigated. We found that the wastewater was readily biodegradable, therefore we assume it can be treated in the wastewater treatment plant as the ratio of the wastewater flow rate and the minimal total inflow into the sewage treatment plant would be one to at least 30.
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