Abstract: A device for electric power construction warning includes: a guardrail body, a caution light and a second hook, wherein a mobile firmware is provided under the guardrail body; the caution light is provided on a top of the guardrail body, and is covered by a shell; a solar power unit is provided on a top of the shell, and is connected to the caution light; a pair of handles are symmetrically provided on external faces at a top portion of the guardrail body; a first ring is provided on an external face at a bottom portion of the guardrail body; two roller supports are separately provided on a left side of the guardrail body, and a roller is provided on each of the roller supports; a second ring is provided on a right side of the firmware to cooperate with the second hook on a left side of the firmware.

Abstract: An electroplating wastewater treatment method includes steps of: (A) crushing the straws into particles, stirring and mixing the crushed straw particles with the electroplating wastewater, and obtaining a mixture, wherein 40-50 g of straw particles are added into each liter of the electroplating wastewater; (B) mixing the seawater with the red mud, adjusting a pH value in a range of 8.5-9.5, filtering after standing, and obtaining a filtrate, wherein: a weight of the red mud which is added into the seawater is 200-300 g per liter seawater; (C) ultrasonically mixing the mixture in step (A) with the filtrate in step (B), standing, and then ultrasonically mixing, and then filtering after standing; and (D) adjusting a pH value of the filtrate obtained in step (C) to 7.