Waste drives do not purify the wastewater incoming in them, but only store them until the export to the drain station. It is quite expensive, but extremely simple. Having installed the tank for receiving drains, it will only be necessary to call a special machine that will take these drains for money. I repeat that it is expensive: if there is a capacity of 8,000 liters and 3-5 inhabitants of the house, it will have to be cleaned at least 3 times a month. If this method is not suitable for you, then your choice is the treatment plant.
