Filtration scheme for toxic and hazardous wastewater discharge in the machinery industry

Toxic and harmful wastewater discharge filtration solution:

The waste liquid and flushing wastewater discharged from mechanical processing of various metal products mainly contain various metal ions, 

which are highly toxic. Wastewater covers a wide range of areas and is highly polluting. It is one of the key industrial wastewater controls. 

Therefore, the multi-media and reverse osmosis equipment solution is a recommended water purification equipment unit based on the water 

quality and other relevant conditions provided by each polluting enterprise, taking into account the concepts of water saving, environmental 

protection, and low energy consumption.

Wastewater is discharged from the cleaning line and collected into the regulating tank, which mainly regulates water quality and quantity.

 The effluent from the regulating tank is lifted by the pump and enters the reaction tank. Since there are many metal ions in the wastewater 

 (if the metal ions are insufficient, it can be supplemented), sodium hydroxide is added into the reaction tank, and the mixer is used to stir and 

mix, 

so that the metal ions and hydroxide radicals are mixed. The ionic reaction produces a metal hydroxide precipitate that is insoluble in water.

It is lifted by the pump and enters the multi-media filter reverse osmosis equipment for treatment.

Equipment recommendations:

Softened water equipment

Product overview: Softened water equipment is composed of a fully automatic water softening controller, a salt box, a strong acid sodium ion 

cation resin, a resin tank and water softener accessories. Through water flow and time control, instructions are sent to solenoid valves or

 multi-channel servo valves to complete the water supply and regeneration of softened water equipment. It is suitable for industrial boilers, 

cooling circulating water, steelmaking, steel rolling, large transformers, and domestic hot water. The most widely used hard water softening 

treatment equipment in boilers and other occasions.

Application scope: steam boilers, hot water boilers, heat exchangers, condensers, central air conditioners, direct combustion engines, domestic 

water, industrial water and other systems.