Using Combinations of Solid Phase Amendments to Accelerate In-Situ Remediation
Dr. John Freim, Director of Materials Science, Regenesis Bioremediation
Colloidal activated carbon accomplishes the rapid elimination of many aqueous phase groundwater contaminants. Adding complimentary amendments can promote active degradation, resulting in accelerated and sustained remediation. This work describes the modeling and performance of novel solid phase colloidal remediation amendments that promote degradation through both abiotic and biotic mechanisms.
Degradation of PFAS by a Thin-Film Gas-Liquid Nonthermal Plasma Reactor: Role of Process Conditions
Mojtaba Nouri Goukeh, Doctoral Student, Florida State University
This work will summarize key findings on the degradation of various PFAS compounds in synthetic solutions, ground water, and leachate using a nanosecond pulsed gas-liquid plasma reactor. PFAS degradation (including those with carbon chain length from C-6 to C-10) with various concentrations and solution properties (pH and conductivity) as well as various plasma reactor conditions (pulse shape and pulse frequency) will be presented.
Environmental Analysis of Surface Water Pollution in Ibadan, Nigeria Using Bodija Stream as a Case Study
Daniel Odion, CCM, Ascension Construction Solutions
Surface water pollution has always been a significant menace for municipalities because of its chronic effect on human health. Identifying ways to minimize its occurrence through proper waste disposal is not only vital to the survival of human health, but also enhances the sustainability of water resources in any clime. This study gives an insight into the effects of pollution on qualities of streams in Nigeria. As a case study, the pollution level of Bodija stream was analysed by taking samples at seven different points (sp1-sp7) along the stream stretch considering the upper, middle, and lower courses of the stream and their pollution sources (e.g., abattoir, markets) for physical, chemical, and bacteriological analyses. The main characteristics determined were temperature, color, turbidity, total solids, PH value, electrical conductivity, total hardness, calcium hardness, dissolved oxygen, BOD, COD, and faecal coliform counts. The results from the analysis showed high rate of gross pollution across the length of the stream with highest being recorded at its upper course. Values from BOD, COD, alkalinity, chloride, hardness indicates that the level of municipal waste transfer from washings, refuse, faeces, urine, and other human activities. The order of pollution of the river thus followed this pattern; sp1> sp2 > sp4 > sp5 > sp3 > sp6 > sp7. Therefore, this study has shown that poorly maintained waste systems is a major cause of surface water pollution, especially in developing countries like Nigeria, and opined by way of recommendation that proper and efficient environmental policies which emphasize on proper disposal of industrial and sewage wastes can serve as a preventive solution to the problems created by water pollutants.
A Single Source Provider for PFAS Removal Solutions
Geoffrey Pellechia, Senior Business Development Manager for Emerging Contaminants, Evoqua Water Technologies
Evoqua provided a single source solution from pilot studies to final solution for PFAS in the town of Kennebunk, Kennebunkport and Wells, Maine.
Novel Mobile Permanent Membrane Filtration of PFAS and Other Contaminants from Water Sources
Gerard Simon, COO, Advanced Mobile Filtration Services, LLC
Increasing awareness in proper cradle to grave treatment and disposal or contaminants such as PFAS are on the forefront of many operators, environmental agencies and communities, and are followed closely with emerging technologies to provide solutions. Once such novel technology using mobile permanent nano membranes, which allow for removal of PFAS and other contaminants to non-detect levels, without the need for chemical interaction that allows disposal or reuse of the water permeate. The technology is commercially available at very high flow rates without fouling or need for cartridge changeout and landfill disposal as traditional filtration.