Many contaminants of interest in water and wastewater are particles, or are made into particles for removal. Typical municipal wastewater treatment plants include both primary and secondary sedimentation, and those with tertiary treatment likely have granular media filtration. Typical drinking water plants using surface water supplies have flocculation, gravity separation (sedimentation or flot...

Removal of pesticides from drinking water remains a challenge for treatment suppliers throughout the world. A combined dissolved air flotation (DAF) and powdered activated carbon (PAC) was investigated as process removal recalcitrant pesticide metaldehyde. The PAC dosing position relative to coagulant studied regarding its impact on NOM pesticide, floc formation clarification efficiency. Four d...

Treatment of wastewater from a tannery in Greater Ho Chi Minh City (Vietnam) was investigated on a pilot scale. After pre-treatment by the tannery that included batch-coagulation and sedimentation, the wastewater was treated by dissolved air flotation, a membrane bioreactor (MBR) and granular activated carbon (GAC) for polishing the MBR effluent. The average removal efficiency for organic subst...

The corrosion rate of steel plate using single-factor, multifactor, and complex water systems was investigated via refinery wastewater effluents used as circulating cooling water. The results show that the primary corrosion factors of steel depend on the characteristics of the ions, the formation of the oxidized coating, the diffusion of dissolved oxygen, and other complex factors, although ion...

The main issue of this paper is the design of a class of SISO robust control law for the regulation of dissolved oxygen (DO) of an industrial Activated Sludge Wastewater Plant via the air flow rate (non-affine control input). The control design is related with an uncertainty estimator (reduced order observer) based Generic Model Control (GMC). The desired dissolved oxygen trajectory is proposed...

In the wastewater treatment process, floatation unit have been developed to remove particles or flocs that tend be difficult settle, such as fat oil and grease (FOG) total suspended solids (TSS). Flotation is a operation can separate liquid phase solid from phase, this occur due presence of saturated air which mixed so it contains fine bubbles help separated. This research was conducted by trea...