عنوان

Chemically Enhanced Treatment Wetland to Improve Water Quality and Mitigate Land Subsidence in the Sacramento‒San Joaquin Delta: Cost and Design Considerations

Number

LA968934w3

.Language of Text, Soundtrack etc

انگلیسی

Title Proper

Chemically Enhanced Treatment Wetland to Improve Water Quality and Mitigate Land Subsidence in the Sacramento‒San Joaquin Delta: Cost and Design Considerations

General Material Designation

[Article]

First Statement of Responsibility

Bachand, Philip A. M.; Kraus, Tamara E. C.; Horwarth, William R.; Hatch, Nathan R.; Bachand, Sandra M.

Text of Note

Water quality impairment and land surface subsidence threaten the viability of the Sacramento-San Joaquin Delta (Delta), a critical component of California's water conveyance system. Current-day irrigation drainage through Delta island peat soils affects drinking water treatment and is linked to mercury transport, potentially posing both ecological and public health concerns. To cost-effectively treat agricultural drainage water from subsided Delta islands to reduce the export of drinking Water Quality Constituents of Concern and mitigate land subsidence through accretion, we studied hybrid coagulation-treatment wetland systems, termed Chemically Enhanced Treatment Wetlands (CETWs). We provide cost estimates and design recommendations to aid broader implementation of this technology. Over a 20-year horizon using a Total Annualized Cost analysis, we estimate treatment costs of

0 per kg dissolved organic carbon (DOC) removed, depending upon source water DOC concentrations for a small 3-acre CETW system. For larger CETW systems scaled for island sizes of 3,500 to 14,000 acres, costs decrease to

Date of Publication

2019

Title

San Francisco Estuary and Watershed Science

Volume Number

17/3

Entry Element

Bachand, Philip A. M.; Kraus, Tamara E. C.; Horwarth, William R.; Hatch, Nathan R.; Bachand, Sandra M.

Electronic name

[Article]

275578

a

Y