Journal of Environmental Biology

Research on the experiment of reservoir water treatment applying ultrafiltration membrane technology of different processes

Liyong Zhang^1,2, Penghui Zhang³, Meng Wang², Kai Yang¹* and Junliang Liu²

¹School of Civil Engineering, Wuhan University, Wuhan-430000, China

²Institute of Urban and Rural Construction, Agricultural University of Hebei, Hebei-071000, China

³Institute of Personnel, Agricultural University of Hebei, Hebei-071000, China

*Corresponding Author E-mail: 344044154@qq.com

Publication Data

Paper received:

31 January 2016

Revised received:

26 March 2016

Re-revised received:

06 May 2016

Accepted:

18 May 2016

Abstract

The processes and effects of coagulation-ultrafiltration (C-UF) and coagulation sedimentation-ultrafiltration (CS-UF) process used in the treatment of Dalangdian Reservoir water were compared. The experiment data indicated that 99% of turbidity removal and basically 100% of microorganism and algae removal were achieved in both C-UF and CS-UF process. The organic removal effect of CS-UF? process was slightly better than C-UF process. However, the organic removal effect under different processes was not obvious due to limitation of ultrafiltration membrane aperture. Polyaluminium chloride was taken as a coagulant in water plant. The aluminum ion removal result revealed that coagulant dosage was effectively saved by using membrane technology during megathermal high algae laden period. Within the range of certain reagent concentration and soaking time, air-water backwashing of every filtration cycle of membrane was conducted to effectively reduce membrane pollution. Besides, maintenance cleaning was conducted every 60 min. whether or not restorative cleaning was conducted depends on the pollution extent. After cleaning, recovery of membrane filtration effect was obvious.

Key words

Combined technology, Membrane technology, Removal effect, Ultrafiltration 

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