A waste water treatment system for high temperature hydrolysis of cyanides has a reactor operating at a sufficiently high temperature and pressure to effect hydrolysis of cyanide in the waste waters. A heat exchanger system is provided through which reactor effluent and reactor influent streams flow. The improved waste water treatment system includes a first tube in tube heat exchanger for an influent stream and a second tube in tube heat exchanger for an effluent stream. A heat exchange medium is circulated between the effluent heat exchanger and the influent heat exchanger to cool down the effluent and in turn use the heat to heat up the influent to the reactor. The heat exchangers are arranged such that the influent and effluent streams pass through the tube side of each heat exchanger to minimize clogging of the first and second heat exchangers, while at the same time providing for effective heat exchange in cooling the effluent and heating up the waste waters to be treated.
An all in one boiler water treatment composition includes an oxygen scavenging system, an alkalinity control agent such as sodium carbonate, diethylaminoethanol as a condensate treatment, a polymer system including polymethacrylate or polyacrylate and polymaleic acid along with an oxygen scavenging system. The oxygen scavenging system includes the diethylaminoethanol, a polyhydroxy acid and a sulfite.
A high-rate biological waste water treatment process for removing organic tter, phosphorus and nitrogen nutrients from municipal waste water comprising the steps of mixing the influent waste water in an initial anaerobic reactor zone to maintain the biological solvents in suspension with a denitrified mixed liquor from a downstream anoxic reactor zone, typically at a flow rate of 0.5 to two times the waste water flow rate. The reactor zone serves to select microorganisms capable of accumulating quantities of phosphorus in excess of that required for simple cell growth and reproduction. The phosphorus removal occurs due to the removal of excess sludge (waste activated sludge) produced in the process wherein such sludge can be removed from the clarifier underflow or as a mixed liquor directly from the biological reactor.