REVIEW PAPER
		
		 
	
	
	
		Identification and Elucidation of the Designing
and Operational Issues of Trickling Filter Systems
for Wastewater Treatment
	
	
		Imran Ali1, Zahid M. Khan2, Changsheng Peng1, Iffat Naz3, Muhammad Sultan2,
Mohsin Ali4, Muhammad H. Mahmood2, Yasir Niaz5
		
			
			Pol. J. Environ. Stud. 2017;26(6):2431-2444
		
		
			
	
	 
	
		
		
 
		
		
	
			ORIGINAL RESEARCH
		
		 
	
	
	
		Performance Evaluation of Trickling Filter-Based
Wastewater Treatment System Utilizing Cotton
Sticks as Filter Media
	
	
		Mian M. Ahson Aslam1, Zahid M. Khan1, Muhammad Sultan1, Yasir Niaz2, Muhammad H. Mahmood3, Muhammad Shoaib1, Aamir Shakoor1, Maqbool Ahmad4
		
			
			Pol. J. Environ. Stud. 2017;26(5):1955-1962
		
		
			
	
	 
	
		
		
 
		
		
	
			ORIGINAL RESEARCH
		
		 
	
	
	
		Experimental Study on Maize Cob Trickling
Filter-Based Wastewater Treatment System:
Design, Development,
and Performance Evaluation
	
	
		Imran Ali1, Zahid M. Khan1, Muhammad Sultan1, Muhammad H. Mahmood1,2,
Hafiz U. Farid1, Mohsin Ali3, Abdul Nasir4
		
			
			Pol. J. Environ. Stud. 2016;25(6):2265-2273