The secondary treatment reduces the organic load of the wastewater, i.e. the Biochemical Oxygen Demand (BOD) and Chemical Oxygen Demand (COD) of the waste water by biological means. Secondary Treatment technologies comprises of Anaerobic and Aerobic processes. Anaerobic treatment is normally recommended for high strength wastes. The anaerobic process designs are based on either the Up-flow Anaerobic Sludge Blanket (UASB) or the Fixed Film design. Hybrid designs are also available.The aerobic designs are based on the complete mix or attached growth processes. The oxygen is supplied using high efficiency fine pore ceramic or membrane based Diffused Aeration Systems. Diffused aeration options include floor mounted grid systems or floating type retrievable diffuser systems.
Anaerobic treatment is normally recommended for high strength wastes |
Anaerobic digestion is a series of biological processes in which organic material (e.g. animal waste, food waste, agricultural waste, wastewater sludge, etc) breaks down in the absence of oxygen and then produces gas. The resultant gas is called methane or biogas which is ...
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Traditional sand washing, wastewater from the quarrying industry, and waste residues have serious environmental pollution. Sand washing equipment with a wastewater treatment system LZZG environmentally friendly washing Sand equipment has been exported to Southeast Asian ...
MBR-1-2-5-10MBR sewage treatment plantMembrane Bioreactor sewage treatment system I. Product Overview Membrane Bioreactor (MBR) is a kind of advanced technology developed since the end of 20th century which realized the efficient combination of membrane separation technology ...
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