Coal gasification grey water hardness removal device

The utility model discloses a coal gasification grey water hardness removal device, relates to the technical field of coal gasification grey water hardness removal, and aims to solve the problem that water and chemicals are wasted although the scaling speed of a system can be slowed down according to the operation experience in recent years by mainly increasing the displacement and adding a dispersing agent in the prior art. How to reduce the water discharge, delay the scaling speed of the system and reduce the use amount of a dispersant of a grey water system becomes the pain point of urgent need of improvement of the coal gasification system. Comprising a flocculant mixer, a clarifying tank, a backing material pump, a high-density sedimentation tank, a sludge reflux pump, a sludge discharge pump, a sulfuric acid mixer, an aeration tank, a sand filter water inlet pump, a sand filter, a nanofiltration device, a grey water tank and a grey water recycling pump. 本实用新型公开了一种煤气化灰水除硬装置，涉及煤气化灰水除硬技术领域，为解决现有技术中的根据近年来的运