Currently, the most commonly used processes for treating dairy wastewater include biological contact oxidation, stand-alone aerobic treatment, anaerobic + aerobic treatment, and the SBR process and its improved versions. 1. Biological Contact Oxidation: This method involves loading packing material into a bioreactor. Microorganisms adhere to the packing material, forming a
An anaerobic-aerobic process for treating pharmaceutical wastewater achieves a BOD5 removal rate of 95% and a COD removal rate of 96%, with stable treatment results. A micro-electrolysis-anaerobic hydrolysis acidification-SBR process for treating chemically synthesized pharmaceutical wastewater shows that the entire series process has strong resistance to changes in wastewater quality
Commonly used aerobic biological treatment methods include activated sludge process, deep well aeration process, adsorption biodegradation process (AB process), contact oxidation process, sequencing batch reactor (SBR) process, and circulating activated sludge process (CASS process). (1) Biological Contact Oxidation Process: This technology combines the advantages of activated sludge and biofilm processes,
COD, or chemical oxygen demand, is an important indicator for measuring the degree of pollution of reducing substances in water. High COD wastewater, or wastewater with high chemical oxygen demand, usually means that the wastewater contains a large amount of organic matter. As its content increases, the oxygen deficiency in
What is Hydraulic Retention Time (HRT) ? Hydraulic Retention Time (HRT) refers to the average residence time of water or sludge in the treatment system in the reactor, that is, the average reaction time of sewage or sludge and microorganisms in the bioreactor. It is one of the important parameters