Abstract: The present disclosure relates to a networked ecological conservation water-saving system for urban mass green land, comprising 5-9 ecological conservation water-saving devices which are orderly arranged in the urban green land per square meter. The ecological conservation water-saving devices are arranged in a central symmetry manner. Each ecological conservation water-saving device comprises a columnar housing and an infiltrating irrigation unit. A first water storage unit is provided at the center of each infiltrating irrigation unit, and a second water storage unit is provided at the lower part of each first water storage unit. The networked ecological conservation water-saving system further comprises a first water delivery pipe network, a second water delivery pipe network, and a third water delivery pipe network.

Abstract: The present disclosure provides a method for transforming an arsenic sulfide slag and curing and stabilizing the resulting compound by means of microencapsulation, comprising the following steps: (1) preparing arsenic trioxide from the arsenic sulfide slag as a raw material; (2) preparing 4-hydroxy-3-nitrophenylarsonic acid from the arsenic trioxide as a raw material; (3) preparing an iron-manganese dinuclear cluster metal arsenate compound having a porous structure; (4) subjecting the iron-manganese dinuclear cluster metal arsenate compound having a porous structure to surface coating with silicon; (5) synthesizing an Fe(0)/Al-SBA-15 mesoporous composite stabilizer by a hydrothermal reaction; and (6) subjecting the silicon coated iron-manganese dinuclear cluster metal arsenate compound to curing and stabilizing treatment by means of microencapsulation.