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deep removal of cod

introduction

removal of cod from wastewater is a key technology urgently needed in the environmental protection market in china. beijing cycle columbus environmental protection technology co., ltd. has developed a comprehensive method to remove cod from oily raffinate effluent.

the technology contains several steps, such as pretreatment of wastewater to reduce the amount of suspended solid and suspended/emulsified/dispersed oil; adsorption treatment to remove dissolved oil; and advanced oxidation process to deeply remove cod in the wastewater. the cod level of the discharged water is less than 50 mg/l.

 

features/benefits

(1) the cod level of the discharged water is less than 50 mg/l, which meets the standard of “integrated wastewater discharge standard” (cn-gb 8978-1996);

(2) the sorbents and solvents are easy to regenerate or without any solid waste.

(3) the technology combines physical and chemical method, and the operation cost is less than $1.5 per ton of wastewater.

application status

the lab-scale and pilot-scale tests have been implemented in more than ten sites (e.g. huayou cobalt, chaucsun umicore, ji’an xintai tech.), and the excellent performance is highly praised by the proprietors of cobalt-nickel and rare-earth processing industries.        

 

 

 
 
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