As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKEOFF, NR 1 ANTI-ICE BLEED VALVE WOULD NOT CLOSE. RETURNED TO DEN. *S/D* WING ANTI-ICE HIGH PRESSURE SHUT OFF VALVE (P/N 1552121) AND WING ANTI-ICE VALVE (P/N 32146451). REPLACED WING ANTI-ICE HP SOV AND WING ANTI-ICE VALVE PER MM, OPS CHECK NORMAL.