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Removing Dissolved Copper from wastewater effluent

Removing Dissolved Copper in Wastewater Treatment Plant

How do you meet your dissolved copper discharge limit if it is 1.6 ppb, 3.1 ppb or 6.1 ppb? What is the cost to achieve these limits? Which treatment is cost effective? Is deionization, Reverse Osmosis or chemical precipitation the best alternative to low level of dissolved copper in a wastewater system? Is it cost effective to run a Water Effect Ratio (WER) Study? Continue reading

How do you remove struvite?

The photographs above demonstrates what can happen if you don’t control or remove struvite.  This is a 14” diameter line used to transfer sludge from an anaerobic digester to a sludge holding pond. Every year this agency would mechanically clean this transfer line.  However, every year plant operation notice that it took longer to transfer equivalent amounts of liquid from the digester.  Finally, the maintenance department had to replace a valve and this is what they saw!! Continue reading