Testing Direct Filtration for the Treatment of High‐Turbidity Water

Abstract

Pilot‐testing was undertaken by the Greater Vancouver (B.C.) Water District to determine the feasibility of using direct filtration for treating turbid water. Because episodes of natural high turbidity tended to be of short duration, turbidity spiking was included in the investigation. Results showed that turbid water could be treated successfully with direct filtration when a deep‐bed monomedium filter was used; a shallower dual‐media filter was not acceptable. Even with a high‐turbidity raw water, turbidity and production goals were met. Determining the appropriate dosage of filter aid was a key factor in meeting the performance goals.

Micro-Flocculation - Film Processing Technology in Dealing with Beer Sterilized Wastewater

“…So conceived through micro coagulation follow-up membrane filtration process to achieve purification and recycling of sterilize wastewater, make the water reach the reclaimed water quality standard ( SL368-2006 ) of reclaimed water used for industrial water selective standards, so as to achieve the purpose of water saving and emission reduction. Micro flocculation is the formation of small aggregates of flocculation process [2] in a short time by adding a certain amount of flocculants in wastewater. This test is taken direct filtration; which means to set the proper flocculation reactor in the pre-filtering, after adding flocculants, flocculation reaction part in the reactor, the other part is in the membrane reactor [3] .…”

Pilot‐plant studies: from planning to project report

“…Pilot-plant testing at Vancouver, B.C., included preparing and treating water with simulated high turbidity after natural occurrences of high turbidity of sufficient duration for adequate testing failed to occur. 2 Natural clays were used, and considerable precaution was taken to be sure that the turbidity-causing particles in the turbid suspension were small particles in the size range likely to be found in the source waters. This approach helped in attaining an important study goal even though natural conditions were not satisfactory.…”

“…Important factors to consider when planning a pilot-plant study are (1) the purpose of the study, (2)the data needed, (3) the kinds of equipment to be used, (4) data collection procedures, (5) documentation of equipment used and work done on the project, (6) periodic data analysis during the study, (7) final interpretation of the data, and (8) the project report to describe the work and show how the findings could be implemented on a larger scale.…”

Treatment of Copper Contaminated Municipal Wastewater by Using UASB Reactor and Sand-Chemically Carbonized Rubber Wood Sawdust Column

“…Slow sand filters are mainly used for the treatment of surface waters [ 12 ] as well as for the posttreatment of secondary effluents [ 13 ]. Various researchers investigated the feasibility of slow sand filters as a posttreatment unit at laboratory and pilot scale using different hydraulic loading and sand size.…”