It's not just a factory chimney and landfill is far from the only option. Incinerators are now old technology. It is the cheapest method, or 'best value for money' at first glance but the cost to the environment and health is hidden.
Other methods such increased recycling, Anaerobic Digestion, Gasification, Mechanical Biological Treatment are enclosed systems. They are non polluting and produce energy. Lip service has been given to recycling but I don't think councils were expecting it to take off the way it has. In Europe 85% recycling in some areas is the norm. Incinerators have to burn at full power 365 days a year. They cannot be turned down. Rubbish has to be found to feed them. And that's without the problem of disposing of bottom ash.
We are being kept in the dark about the alternatives.