Hong W Zhao

Title: Innovations and Contributions of Inventor Hong W Zhao

Introduction

Hong W Zhao is a notable inventor based in Raleigh, NC, with a significant portfolio of eight patents. His work primarily focuses on advancements in wastewater treatment processes, showcasing his commitment to environmental sustainability and innovation.

Latest Patents

One of his latest patents is a mainstream deammonification process employing bypass primary effluent and step feeding. This invention relates to a method for removing ammonium from wastewater while suppressing NOB growth and producing sludge with excellent settling characteristics. The process involves clarifying the wastewater stream in a primary clarifier to produce a primary effluent, which is then directed to a biological treatment reactor for carbon removal. Treated wastewater is subsequently directed into an integrated fixed film activated sludge (IFAS) deammonification reactor, integrating nitritation and anammox processes with intermittent aeration. A second portion of the primary effluent is also directed to the IFAS reactor, bypassing the biological treatment reactor during specific aeration periods. The effluent from the IFAS reactor is then sent to a secondary clarifier, producing a secondary effluent and clarifier underflow, with a portion of the underflow recycled back to the IFAS reactor.

Another significant patent is a method of treating sludge containing phosphorus, ammonia, and magnesium, aimed at enhancing the dewaterability of the sludge. This method involves directing sludge into a biological fermenter under anaerobic conditions, where temperature and hydraulic retention time are controlled to release phosphorus, ammonia, and magnesium into a liquid component of the sludge. The sludge undergoes a solids-liquid separation process, producing concentrated sludge and liquid. The concentrated sludge is then directed to a thermal hydrolysis reactor for further processing before being sent to an anaerobic digester.

Career Highlights

Throughout his career, Hong W Zhao has worked with prominent companies such as Veolia Water Solutions & Technologies and I. Kruger Inc. His contributions to these organizations have significantly advanced their capabilities in wastewater treatment technologies.

Collaborations

Hong has collaborated with notable professionals in his field, including Richard W DiMassimo and Sun-Nan Hong. These collaborations have fostered innovation and development in wastewater treatment processes.

Conclusion

Hong W Zhao's innovative patents and contributions to wastewater treatment reflect his dedication to environmental sustainability. His work continues to influence the industry and inspire future advancements in the field.