The Continuous Flush Wastewater Drip Dispersal System
OSCAR Onsite offers a superior wastewater drip dispersal system alternative to wastewater and water reclamation contractors in Washington and Idaho. A manufacturer of high-quality alternative products and systems, our highly trained and experienced team is dedicated to helping you find a system that’s efficient and affordable for your project.
What a Wastewater Drip Dispersal System Does
A subsurface wastewater drip dispersal system is designed to hydraulically accomplish two objectives:
- Deliver a set volume of wastewater to the receiving soil or media.
- Flush the interior of the drip tubing network to remove accumulated biological slimes or ‘re-growth’.
Most drip dispersal design manuals call for two distinctly different cycles – a dose cycle and a flush cycle. The two cycles are distinguishable by the position of a flush valve. When the flush valve is closed, the system will dose effluent into the dripfield at a relatively high inlet pressure and low flow. When the flush valve is open, the system will flush the piping network at a low inlet pressure and high flow rate.
Automatic & Manual Flush Cycles
There are two traditional ways to accomplish the flush cycle: automatically or manually. Automatic flushing is accomplished using control equipment and electronic valves synchronized with the pump. Flushing occurs automatically at prescribed time intervals. Manual flushing is accomplished with the use of simple ball valve(s), and requires an operator to periodically open and close the valve(s).
A third option is called ‘continuous flushing’, in which the minimum pressure for dosing and the minimum flow for flushing are both simultaneously achieved during every dose cycle. The flush valve position is static and doesn’t require any adjustment between dosing and flushing cycles. Flushing velocities in the wastewater drip dispersal system can vary from 1 to 3 feet per second depending on the cleanliness of the effluent or other design considerations.
NOTE: The emitters used in this application must be pressure compensating, meaning that within a given pressure range (7 to 60 psi), each emitter will discharge at the same rate.
Our Continuous Flush Process
The OSCAR Onsite continuous flush process has several basic parameters for design and operation. For virtually all single-family residence designs, the same headworks, pump and dripline (0.42 gph Netafim Bioline®) are used.
View or Download Tech Specs Below
(Link to updated be soon)
Accomplishing the Dose & Flush Cycle
Regardless of the flushing method (manual, automatic or continuous), every wastewater drip dispersal system must be designed to accomplish a dose and flush cycle. The system must be able to adequately prevent or remove slime build-up from the interior walls of the piping network. The number of emitters, zones, laterals within each zone and lateral lengths determine the pump and supply line size.
Reverse Flush Headworks
OSCAR Onsite’s LOWeFLOW™ system overcomes many design challenges, including cost-effectively protecting the drip emitters from clogging. The methodology we developed is called ‘Reverse Flush’, which standardizes electrical controls and headworks to allow for an efficient reverse flushing of the disc filtering device and a forward flush of the drip tubing.
Custom controls and headworks
OSCAR Onsite engineers can provide custom controls and headworks to suit any project, and our exceptional consultation services take into account all aspects of sub-surface drip dispersal system design at no additional charge. Once design parameters are established, Oscar Onsite can custom manufacture controls and headworks as specified.
Other Products & Services
In addition to our alternative wastewater drip dispersal system design, product and placement help, our expert team has the knowledge, skill and equipment to help with any water reuse system need you may have. Contact us to discuss our product options for use in Washington, Idaho, Oregon and Arizona
Efficient Continuous Flush Wastewater Drip Dispersal System Design, Manufacture & Placement
Serving Washington and Idaho