secondary treatment वाक्य
उदाहरण वाक्य
मोबाइल
- Under the EU's urban waste-water treatment directive, sewage discharged into the sea should receive primary and secondary treatment, which uses microorganisms to break down the wastes.
- In 1972, federal and state laws mandated primary and secondary treatment for all municipal sewer systems, effectively taking the option for lesser treatment plants away from states.
- In 1974, federal and state clean-water regulations required the plant to draw up a secondary treatment plan, which would result in cleaner water going into the river.
- The requirement to perform secondary treatment on wastewater before ocean discharge was waived by the EPA in 1995, " taking into account the city's unique circumstances ".
- Sedimentation tanks called " secondary clarifiers " remove flocs of biological growth created in some methods of secondary treatment including activated sludge, trickling filters and rotating biological contactors.
- With federal help, Vancouver-area governments are spending about $ 196 million ( Canadian ) for a secondary treatment plant at Lulu Island, on the Fraser River south of Vancouver.
- Where natural waterways are too small to rapidly oxidize primary treated sewage, the liquid may be used to intermittent sand filtration until more compact secondary treatment bioreactors became available.
- Discharges to the river were still of poor quality, and a secondary treatment process was designed, although its implementation was delayed by the onset of the First World War.
- After a period, which allows most of the organic material to settle out, the liquor passes over weirs at the end of the settlement tanks to the secondary treatment process.
- The district has recently negotiated a deadline extension until July 2000 for delivery of a waste management plan, designed to include a schedule for upgrading to primary and secondary treatment.
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