Recently, GN developed a new product that can be used in the oil tanks cleaning system for the water recycling. Operator use high pressure water, sometimes warm water, to flush the oil storage tank for tank cleaning. This work needs lots of clean water. If the water could be recovered and reused, then a great of money could be saved.
Main part of GN water recycling system
1. Tank cleaning machine – this is a machine that can produce high pressure to drive the water for flushing the inner wall of oil tank. At this time, this unit is outsourced by clients.
2. Clean water buffer tank – this tank is used to store the clean water, also the recycled water is flow back to this tank.
3. Solids remover – the dirty water contents water, oil and solid particles. In order to remove the solids in the mixture, GN designed 2 steps solids remover. First step is de-silter cyclone unit, and the second step is inclined plate clarifier.
4. Pumping system – this system is consisting of pump for water transferring, slurry transferring and settlement sludge discharging pump.
5. Electric control – this unit control all the pumps in the system.
Working principle of tank cleaning water recycling system
1. Clean water will be first fill into the buffer tank; the water transferring pump will feed the water to the high pressure tank cleaning machine for tank flushing.
2. The dirty water is transferred by the second pump to the de-silter cyclone for first step solids removing. A strainer will be installed between the oil tank and pump to filter the large size solids for protection of pump and cyclone.
3. The liquid overflow out of the cyclone will flow into the inclined plate clarifier; the special structure will speed up the solids settlement towards the bottom of the clarifier. The upper layer liquid will overflow back to water buffer tank for reuse.
4. The sludge discharged from the cyclone and bottom of the inclined plate clarifier will be collected in a small cuttings box.
All equipment in GN’s water recycling system for tank cleaning is installed on one skid with length same as 20 feet container. So it could be delivered easily by a flat bed trailer from one site to another.