Regular washing machine drain blockages

Our washing machine waste pipe is hooked into a stand pipe which has a fairly inaccessible route to the main sewer.
The pipe regularly blocks with a mush of fibres and soap, causing overflow and requiring acids to clear a passage again.

There's a nearer sewer pipe, which I want to connect the stand pipe to, but I also want to ensure that there's no possibility of overflow.

Is this unrealistic?
Or, are there any gizmos one can fit to detect "unusual" water levels in the drain, which would at least warn me before I get the floor flooded again?

do it in 50mm solvent
should solve your problem

could put a hepworth HepV0 Self Sealing Waste Valve in the pipe run. This might reduce the chances of flooding. But I will admit, I have never used one

A regular kettle FULL of near boiling water is good for dissolving the soapy stuff. I provided one little old lady with a funnel and sideways bit of pipe for input of same to deal with the problem. Haven't heard from her so it's either good news, or rather sad.