Case

Oily Wastewater Treatment: Foxconn Oily Emulsion Hazardous Wastewater

Oily Wastewater Treatment Case Study

Introduction

The proper treatment of oily wastewater is a pressing environmental concern, stemming from diverse industrial processes such as petroleum refineries, oil storage and transport, petrochemical facilities, oil drilling, and contaminated site remediation. The discharge of large volumes of effluents from these sources into ecosystems daily poses a significant challenge due to the hazardous and refractory nature of oily wastewater. This case study explores the groundbreaking application of boron-doped diamond (BDD) electrodes through as an advanced and effective solution for the treatment of oily wastewater.

oily wastewater treatment via bdd

Oily Wastewater Treatment: Materials and Methods

The study, conducted at the Foxconn manufacturing site, aimed to address the challenges associated with oily wastewater treatment. Optimal operating conditions were identified to achieve efficient oxidation while minimizing energy consumption. The focus was on enhancing the removal of residual pollutants post-treatment, recognizing the need for modifications at existing wastewater treatment facilities.

Advanced oxidation processes (AOPs) emerged as a promising avenue for treating oily wastewater, offering rapid reaction rates, freedom from secondary pollution, pathogen inactivation, and potential complete mineralization of pollutants into innocuous byproducts. AOPs using boron-doped diamond electrodes, proved to be a versatile, easily applicable, and safe treatment method, generating highly reactive oxygen species, primarily hydroxyl radicals (•OH), known for their low selectivity in oxidizing pollutants.

 

oily wastewater treatment

Key Data From Foxconn Manufacturing Site

Sampling & Analysis
  • BDD Area: 8 square meters
  • Influent COD: 10,000-11,000 mg/L
  • Effluent COD: <300 mg/L
Project Cost & Energy Consumption
  • Electricity Fee: 50-60 CNY/metric ton
  • Energy Consumption: 90-120 KWh/metric ton
Handling Capacity
  • Current Handling Capacity during Test: 9 metric tons per day
  • Estimated Handling Capacity in Full Operation: 15 metric tons per day

 

Advanced oxidation represents a highly promising technology for the treatment of oily wastewater. It enables the generation of extremely reactive oxygen species, facilitating the mineralization of hazardous, refractory, and toxic pollutants present in complex industrial effluents and oil spills, all without undesirable byproducts.

By offering an environmentally compatible treatment method utilizing simple electrolytes, contribute significantly to mitigating the substantial impacts of oily wastewater discharges into natural ecosystems. Although optimization is required to minimize energy consumption, this advanced process holds immense potential for the removal of oil from water.

 

 

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——–  Boromond Team

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