Title

Hybrid Adsorption and Biological Treatment Systems (HABiTS) for Onsite Wastewater Treatment

Document Type

Conference Proceeding

Publication Date

1-2015

Keywords

Adsorption, biological nitrogen removal, on-site wastewater treatment, scrap tires, zeolite

Abstract

Hybrid Adsorption and Biological Treatment Systems (HABiTS) can enhance N removal in onsite wastewater treatment systems (OWTS) by coupling ion exchange (IX) with biological N removal (BNR). Batch IX studies showed that clinoptilolite was the best medium for the nitrification stage of HABiTS due to its high IX capacity for NH4+ (14 mg/g) even when in competition with other cations present in septic tank effluents. Further characterization showed over 80% NH4+ removal within 8 hrs contact time. Column and modeling studies showed that a 6 cm layer of clinoptilolite will maintain N levels below 10 mg/L for 2 days with N loadings typical of OWTS. Desorption of NH4+ was slow and should allow sufficient time for biological regeneration of the materials when applied in HABiTS. The design of the nitrification and denitrification stages of HABiTS was also presented.

Was this content written or created while at USF?

Yes

Citation / Publisher Attribution

Proceedings of the Water Environment Federation, WEFTEC 2015, p. 4660-4672