In our blog post titled “Construction Site Runoff? You have options!,” we introduced HaloKlear Floc Socks. HaloKlear Floc Socks from Dober are sturdy, connected, fabric pouches containing an all-natural flocculant that dissolves slowly as moving water passes over them, creating dense flocs – with great shear strength and low water content – that settle out quickly. Solids are efficiently removed from the water, allowing your crew to focus on their work – instead of on dirty water. In addition, the HaloKlear Floc Socks are extremely flexible, and can be used in active, passive, and semi-passive treatment environments.
This post will outline HaloKlear Floc Sock use for Semi-Passive Treatment of Turbid Water Utilizing a Dual Product System, Settling Tank, and Dewatering Bags.
WHAT IS ITS PURPOSE?
To clean construction stormwater from a pond using semi-passive system prior to discharging into a regulated and/or high quality water body.
WHERE AND HOW IS IT COMMONLY USED? (SEE FIGURE)
- On a stream of construction run off to treat the water prior to discharge.
WHEN SHOULD IT BE INSTALLED?
- Before Construction Activities Begin
- While Construction Activities are Occurring
- To Treat Water Stored on Site
- To Treat Water When Larger Amounts of Sediment Load are Present
- After Project Completion to Clean Dirty Water Stored on Site
- When Space is Limited
- When Discharging into a Non-High Quality Water Body
WHEN SHOULD IT NOT BE INSTALLED?
- When no method of pumping water is available
- When precise dosing of treatment chemicals is required
WHAT NEEDS TO BE INSPECTED?
- Are there excessive solids in the settling tank?
- Are the natural flocculant socks in good condition?
- What is the condition of the dewatering bags?
- Is the effluent water from the system of sufficient clarity?
- Does the residual water test show any remaining natural flocculant in the effluent water?
WHAT MAINTENANCE ACTIVITIES CAN BE EXPECTED?
- Routine Maintenance of Water Feed Pump
- Removing Solids from Settling Tank
- Changing of Natural Flocculant Socks
- Changing of Dewatering Bag
- Natural ﬂocculants in general should not be directly released into civic storm water systems or natural watercourses.
- Discharging water through vegetated areas or additional BMP’s can further reduce turbidity.
- Dewatering bags should be placed on rock, geotextile fabric, or vegetative surfaces.
- Natural ﬂocculants will completely degrade with enzymatic action.
- See table on drawing for flow/does rates of flocculant.
Learn more by viewing the corresponding configuration now: