Can sombody design or suggest a separator to separate water

Can sombody design or suggest a separator to separate water and mud in a sump to be used in a car wash business. We are trying to design a separator to separate water and mud in a sump to be used in a car wash business. Will rate 5 stars to whoever can answer this question. Thanks in advance.

Solution

In car wash waste water contains oil waste, dust and sand
Purification of water at two levels –    macro level
Micro level
For macro level (large particles like sand, dust etc…) (for purpose external use)
   For that we can use external force to separate them
1.   Gravity force (stationary tanks) (for very large contaminates)
2.   Centrifugal force (milk and butter separator) (for large contaminates)
3.   Pressure force (filters and RO filter) for this process we must do separate very large particles by stationary tanks (for small contaminates)
For micro level (small particles like toxins etc…) (for drinking)
   This is only done by the chemicals
       You can watch you tube videos for oil separation process
https://youtu.be/CRcaYeix8Zw
https://youtu.be/KzzkYYYPNxI
https://youtu.be/MC_wzzG1iUI
Quality of water directly propositional to how much money u spend that much level of purification u can get
But if u follow all 1->2->3 process u followed u can give the more life to machine, because the duty of separation shared. If I do all stages I will place