Hydro vac is very popular method to drilling in advanced company, especially in north America, such as USA and Canada. It utilize the high pressure water to flushing the ground and dig. This method will not damage the pipeline under ground, and also do not pollute environment. It is a environment friendly and high efficiency digging way. However, hydrovac also will consume lots water. After flushing ground by water, there will be generate large sludge. hydrovac truck will suck these sludge into the tank, and transfer it into somewhere to dump. The sludge dumpling is always trouble for hydrovac company. GN solids control developed the dewatering system for these kind sludge treatment.

When we design this system, engineer considered the sludge dumpling , solids sort out, solids dewatering and also water clarifying. Firstly, there is a big catch hopper, truck can directly dump sludge into the hopper, this hopper can receive 2-4 truck load sludge in same time, it will save much time for sludge dumpling. Secondly, there is a coarse shaker under Cathy hopper, sludge can drop onto this coarse shaker. It is a big shaker that can separate big size particle , this shaker also has big treating capacity. In this step, shaker can sort out the little stone and big particle sand , which can be used for building material. Slurry after shaker will feed into fine shaker and hydrocyclone ,in this step ,90% solids will be remove out. The discharged solids after sun cure, it will dry enough to transporation and for building material using. The last step is feeding liquid into Decanter centrifuge , some times we also will mix flocculant with liquid to combine tiny solids into bigger to help centrifuge to remove out them better.

The entire system was designed by GN and also manufactured by our own. Customized design it allowable. Till now, we had provide more than 15 sets system to north America, and the sales is keeping raising. If you have demanded on this system, welcome to contact us.