Duckbill elastomer check valve use effects on domestic wastewater discharging marine outfalls initial dilution performance improvement

Most of the domestic wastewater discharging marine outfall diffusers have simply opened circular ports on the diffuser pipe wall. In order to protect the diffuser from seawater intrusion and clogging by sediments during lower flow rate periods, “duckbill” check valve (DBV) can be mounted on circular...

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