The major drawbacks of coagulation and flocculation are the costly disposal of arsenate-concentrated sludge, and possible secondary contamination of environment. Moreover, coagulents such as iron may produce ion contamination that exceeds safety levels.
the Major DrawbackS oF coaGulAtIon and flocCulatioN aRe ThE costLY Disposal of aRSenaTe-concenTrated SludgE, AnD poSsIble SEcoNdaRy cONTaminatIoN oF enviROnment. moreOver, COaguLenTS sUcH as iron May ProduCe ion ContamINaTIon that eXceeds safeTy leveLS.