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Developing Resource Recovery Options for Small Wastewater Treatment Plants.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Developing Resource Recovery Options for Small Wastewater Treatment Plants./
作者:	Hallas, John F.
出版者:	Ann Arbor : ProQuest Dissertations & Theses, : 2022,
面頁冊數:	205 p.
附註:	Source: Dissertations Abstracts International, Volume: 83-12, Section: B.
Contained By:	Dissertations Abstracts International83-12B.
標題:	Environmental engineering. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=28962337
ISBN:	9798438796909

Developing Resource Recovery Options for Small Wastewater Treatment Plants.
Hallas, John F.

Developing Resource Recovery Options for Small Wastewater Treatment Plants. - Ann Arbor : ProQuest Dissertations & Theses, 2022 - 205 p.

Source: Dissertations Abstracts International, Volume: 83-12, Section: B.

Thesis (Ph.D.)--University of Florida, 2022.

This item must not be sold to any third party vendors.

As demand for phosphorus (P) continues to increase, it is predicted that economically accessible reserves will be exhausted within this century. Other renewable P sources are needed. Small municipal wastewater treatment plants (WWTP) handle approximately 40% of the discharged wastewater in the United States (US) and are an overlooked source of recoverable P. Over 1.4 Mg P passes through US WWTPs each year; however, limited research has been conducted on these systems as a possible source of economical P. Recovering P through struvite (MgNH4PO4 6H2O) precipitation from these systems may be an attractive option for P recovery to be reused as fertilizer. Four WWTPs in north Florida with treatment capacities from 371 to 2,650 m3 wastewater per day and incoming P loads from 2 to 14 kg per day were investigated. A chemical equilibrium model was developed to predict the feasibility of struvite production. Formation experiments showed the struvite formation predicted by the model was feasible. Additional experiments showed that P recovery through struvite formation could be increased through the addition of Mg2. A P mass balance model was developed as tool to show the effect P recovery through struvite formation would have on the individual WWTP outflow and stocks of P. Thermal pretreatment at these locations was studied to determine the effect on aerobically digested sludges beneficial use through struvite formation, the resulting phosphorus recovery, and biosolid class. Based upon these results, WWTPs in the US can potentially recover approximately 5.14 Tg of P2O5 equivalents per year and could simultaneously provide P removal as well as a renewable P source.

ISBN: 9798438796909Subjects--Topical Terms:

548583
Environmental engineering.
Subjects--Index Terms:

Phosphorus

Developing Resource Recovery Options for Small Wastewater Treatment Plants.
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500 $a Source: Dissertations Abstracts International, Volume: 83-12, Section: B.
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506 $a This item must not be sold to any third party vendors.
520 $a As demand for phosphorus (P) continues to increase, it is predicted that economically accessible reserves will be exhausted within this century. Other renewable P sources are needed. Small municipal wastewater treatment plants (WWTP) handle approximately 40% of the discharged wastewater in the United States (US) and are an overlooked source of recoverable P. Over 1.4 Mg P passes through US WWTPs each year; however, limited research has been conducted on these systems as a possible source of economical P. Recovering P through struvite (MgNH4PO4 6H2O) precipitation from these systems may be an attractive option for P recovery to be reused as fertilizer. Four WWTPs in north Florida with treatment capacities from 371 to 2,650 m3 wastewater per day and incoming P loads from 2 to 14 kg per day were investigated. A chemical equilibrium model was developed to predict the feasibility of struvite production. Formation experiments showed the struvite formation predicted by the model was feasible. Additional experiments showed that P recovery through struvite formation could be increased through the addition of Mg2. A P mass balance model was developed as tool to show the effect P recovery through struvite formation would have on the individual WWTP outflow and stocks of P. Thermal pretreatment at these locations was studied to determine the effect on aerobically digested sludges beneficial use through struvite formation, the resulting phosphorus recovery, and biosolid class. Based upon these results, WWTPs in the US can potentially recover approximately 5.14 Tg of P2O5 equivalents per year and could simultaneously provide P removal as well as a renewable P source.
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