Novel Composite Biogenic Flocculant for Sewage Treatment
Overview
The present invention provides a novel composite biogenic flocculant using non-hazardous and low-cost commercially available chemicals, naturally occurring microbes and renewable waste materials. The composite biogenic flocculant greatly improves the sludge dewaterability and can be used in wastewater treatment.
Commercialisation opportunities
technology licensing agreement
Problem addressed
Chemically-enhanced primary treatment (CEPT) process has been implemented as an alternative treatment process to the conventional process for domestic sewage. The CEPT process is either too expensive or poses ecological hazards. The present invention aims at solving issues related to wastewater treatment facilities by using biogenic flocculants.
Innovation
- The invention provides a novel composite biogenic flocculant having a blend of different microbial consortia exhibiting multifunctional activities that enhances the sludge dewaterability and using the composite biogenic flocculant for rapid flocculation, and improving the filterability and dewaterability of sewage sludge.
- The present method of manufacturing a composite biogenic flocculant involves the use of autotrophic and organotrophic bacteria and less expensive divalent iron source. The composite biogenic flocculant greatly improves the sludge dewaterability.
Key impact
- The composite biogenic flocculant greatly improves the sludge dewaterability.
Application
- This biogenic flocculant can be used in wastewater treatment for rapid flocculation, and improving the filterability and dewaterability of sewage sludge.
Patent
- US Patent No. US 9,328,007
- US Patent No. US 9,738,554
- China Patent No. ZL 201510087916.X
- Hong Kong Patent No. HK1210764
Hong Kong Baptist University (HKBU)
Aspiring to be a leading, research-led, liberal arts University in Asia, Hong Kong Baptist University is committed to conducting world-leading investigations that extends the frontiers of knowledge, tackles global challenges and benefits the community at home and abroad.
Pursuing research excellence is one of the priorities of the University’s Institutional Strategic Plan 2018-2028. The University keeps enhancing its capacity and strength to produce world-class research with an aim to bring significant impact to the society.
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