UASB Reactor for LivestockBreeding Wastewater Treatment

Glass-fused-to-steel bolted tanks feature outstanding corrosion-resistance, modular assembly, rapid construction, favourable sealing property and dependable biogas collection. Equipped with standardized accessories, they are easy to match with complete-set equipment.

Components including the three-phase separator, water distributor, sampling port, overflow outlet, stirring device and membrane-type biogas holder can be fitted. Hence the tank can be readily assembled into an integrated UASB reactor system.

Waste-water treatment process flow for large-scale pig farms: Bar Screen → Solid-liquid Separation → Coagulation Sedimentation → UASB Reactor → Two-stage AO Process → Secondary Sedimentation Tank → Fenton Treatment → Disinfection → Discharge.

● The inner A (anoxic) tank shall withstand the lateral water pressure exerted by the outer O (aerobic) tank. It shall not be designed merely as an atmospheric-pressure storage tank; the thickness of enamel-coated steel panels must be verified according to external-pressure tank criteria；

● Sufficient annular operating width shall be reserved for the outer-tank diameter.

● Base material: special titanium-rich high-strength enamel-qualified steel plate Low-carbon titanium-specialized steel is adopted. The steel boasts excellent yield strength, tensile strength and elongation property. It features good impactresistance and deformation-resistance, capable of withstanding stress generated by water pressure, material load and temperature fluctuation, so steel-plate cracking seldom occurs.

● Molecular-bonded inorganic glass-enamel layer formed through high-temperature fusion Enamel glaze is applied to both sides of steel plates and then fired at 820-930 °C. Molecular-level combination is achieved between the glass enamel and steel substrate, which prevents the glaze layer from simple coating peeling-off.

● High chemical inertness of glaze layer and multi-form corrosion resistance The inorganic glass substance keeps stable chemical property. It resists liquid-phase and gas-phase corrosion from organic acid, hydrogen sulfide, acid-alkaline medium and salt-containing wastewater. It adapts to harsh working-conditions including anaerobic digesters, livestock-manure storage tanks and industrial wastewater tanks.

● Modular-designed steel panels with consistent material performance All enamel-coated steel panels go through standardized glaze spraying, high-temperature sintering and quality inspection inside the factory. The enamel thickness and physical-chemical parameters of every panel are under precise control for stable finished-product quality.