LV Power system design for a wastewater treatment plant with 850 m3/h inlet capacity for an EPC contractor

This was a large-scale wastewater treatment plant that consists of 3 main units:

1. Sanitary wastewater treatment unit with an inlet capacity of 550.0 m3/h.

2. Industrial wastewater treatment unit with an inlet capacity of 300.0 m3/h.

3. RO unit

Sanitary wastewater includes three separate streams for three towns. The source of industrial wastewater is steel plant industrial wastewater producers including sand filter backwash drain, regeneration drain of ion exchange columns, boiler blow-down, and cooling tower blow-down. Industrial wastewater contains suspended solids, oil, and dissolved solids.

After pretreatment, industrial and sanitary streams will be mixed in a storage tank to feed the RO unit. Half of the RO permeate water will be delivered to the steel factory as industrial water and half of the RO permeate will be transferred to the polishing system to produce soft water.

This project was done in white label format (for 6 months) for the main EPC contractor of the wastewater treatment plants and brought saving money, and time. Besides them, The purchase and construction process was completed earlier.

In the first step, the first revision of the electrical load list of the project was reviewed the number of a power center, MCCs, and their locations were finalized with the civil and piping department of the EPC contractor.

In continuing, the load list was revised according to the technical offer of the manufacturer of electro pumps, blowers, electro fans, etc. then a detailed design of power centers, MCCs, LV cables, and conduit banks, … was designed.

In this project, power electrical software was used like ETAP, EPLAN, AutoCAD