Even if a Vapour Combustion Unit is capable to achieve is goal, limiting the emissions this way means to burn everything at high temperatures,  this involves high noise level, intrinsic temperature risks in explosive field proximity, complete loss of the products themselves.

A good working VRU is always worth its building investment. A VRU operating in optimal configuration will recover in average 1‰ of the processed products, sending back VOC’s to tank as real gasoline. 

This means potentially thousands of liters per day.

The profit coming from recovered gasoline is usually much higher than the electric power and plant maintenance expenses, so as far as money is concerned, respecting laws with low VOC’s emission level turn it self in a good business.