GN Solids Control Equipment,Solids Control System
HydroVac Slurry Separation Plant
GN Solids Control has been an expert for separation works, handled many different application projects, and lots of clients using GN equipment to separate the fluids/slurry they get from different source. One of the resources is hydrovac projects, packed into a vacuum truck, then transported to a plant, where many different equipment handling different it, and separate it out.
Hydro Excavation is a two part process and is a form of non-destructive digging or excavation and uses a jetting rod similar to your household gurney to spray high pressurised water at the surface in order to break it a part the dirt, grass, mud, clay or any compound surface. The second component is high volume suction vacuum to suck up the water and dirt broken apart from the first stage of the process. When you reach the place for discharge, then it is time for separation.
GN solution is to provide a classified-separation process to recover water and remedy the soil; the rough process diagram is consisting of following steps.
1. Waste Collecting and Washing Module – the waste slurry is delivered to site via the hydrocac truck and then discharged to a large size collecting hopper at which bottom there are valves to discharge the slurry onto a coarse screen for large size trash separation. The liquid with fine particles is collected in the tank located under the coarse screen. The liquid is then pumped to GN high G forcedrying shaker for finer solids separation. Here the operator can also use pressure flushing device to wash the slurry. GN shaker is fixed with composite frame shaker screen for longer working time and better performance.
2. Fine Solids Hydro cycling Separation Module – GN desilter with hydro cyclone manifold is fixed on a washing tank for further separation of the fine solids. The under shaker of the desilter is same model with GN drying shaker for easy maintenance. The hydrocyclone is using centrifugal force and gravity to separate the liquid and solids. The slurry is pumped into the cyclone with high speed for effectively separation process.
3.Dewatering Centrifuge Module – in this hydrovac excavation waste slurry treatment system, a 22 inch big bowl decanter centrifuge is used to remove the ultra-fine solids in the slurry. A chemical dosing system can be connected to the dewatering centrifuge to increase the efficiency of the separation.
Contact GN for more details.