The phrase 'treat this as a matter of urgency' is correct and usable in written English. It is often used to indicate that someone should take action as soon as possible. For example, you could say: "Please treat this as a matter of urgency -- we need to have it completed by this afternoon."
"I will take some persuading that this is appropriate, but the review is under way and is being treated as a matter of urgency.
We need to address this issue as a matter of urgency.
He added: "The Government must tackle this as a matter of urgency".
But he added: "Clearly there is a need to deliver this as a matter of urgency".
"I've asked my officials to investigate this as a matter of urgency".
We are investigating this as a matter of urgency.
"The European Commission should now investigate this as a matter of urgency".
"It is therefore essential that the police get to the bottom of this as a matter of urgency".
"That's why it's very important that the Information Commissioner investigates this as a matter of urgency".
UNICEF and GOI should work together to achieve this as a matter of urgency.
Some Customer payments are missing this morning – we are investigating this issue as a matter of urgency.
Being a terminologist, I care about word choice. Ludwig simply helps me pick the best words for any translation. Five stars!
Maria Pia Montoro
Terminologist and Q/A Analyst @ Translation Centre for the Bodies of the European Union