Home » Chemistry mcqs » Trickling filter method is ___________ than the activated sludge processTrickling filter method is ___________ than the activated sludge process by a) Fast b) Slow c) Very fast d) Moderate Related Posts:Which of the following is the correct sequence in…Antonym of “kowtow” is ___________.Synonym of “largesse” is ___________.Term of Senator in Pakistan is ___________The world’s first ATM machine located in ___________?___________ is concerned with cell secretions?