Process for working up waste water containing phosphorus

Details Process for working up waste water containing phosphorus Process for working up waste water containing phosphorus

C - Chemistry, Metallurgy

02

F

362/46

C02F 1/58 (2006.01) C02F 1/38 (2006.01) C02F 1/66 (2006.01) C02F 1/74 (2006.01)

Patent

CA 1161579

PROCESS FOR WORKING UP WASTE WATER CONTAINING PHOSPHORUS ABSTRACT OF THE DISCLOSURE The invention relates to a process for working up phos- phorus-containing waste water by subjecting it to filtration with the use of a filter aid in a centrifugal filter. To this end, waste water with a temperature of at least 46°C and a pH-value within the range 0.5 to 4.0 is introduced into the centrifugal filter and filtrate coming from the centrifugal filter is introduced into a calming zone and separated therein within an average period of 10 to 60 mi- nutes into yellow phosphorus and water containing 1 to 30 ppm of phosphorus. Water overflowing from the calming zone is treated with an oxidant and the waste water so freed from phosphorus is reacted with a neutralizing agent.

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