Dosing system of reclaimed water treatment system and reclaimed water treatment system

The utility model relates to a dosing system of a reclaimed water treatment system. The reclaimed water treatment system comprises ultrafiltration membrane equipment and reverse osmosis membrane equipment; a water inlet of the ultrafiltration membrane equipment is communicated with a first pipeline; a second pipeline is communicated between the water outlet of the ultrafiltration membrane equipment and the water inlet of the reverse osmosis membrane equipment; the dosing system comprises a first dosing mechanism for adding a reducing agent into the first pipeline and a second dosing mechanismfor adding a scale inhibitor into the second pipeline; the first dosing mechanism comprises a first dosing tank, a first dosing pipe, a first flow monitor and a first metering pump; according to the reclaimed water treatment system, the first metering pump is controlled to act according to the monitoring information of the first flow monitor, so that the reducing agent with the optimal volume is pumped into the first pipe