Wedge Wire Screen For Industry Filtering And Screening
An Integrated Fixed-film Activated Sludge (IFAS) process incorporates the technological benefits of traditional systems of activated sludge with biofilm systems of activated sludge with biofilm systems in a single reactor. IFAS is employed to update and improve nitrogen removal at plants already in operation. Additionally, IFAS can also be integrated in the design plans for new plants as part of a smaller footprint during the BOD and nitrogen removal processes.
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Product Introduction
Product Description
Stainless steel wedge wire screen retain the cultivated biofilm media in a process-designated reactor while allowing the treated wastewater and sloughed biofilm to flow through to the next treatment phase.
When vertical-mounted flat-panel media retention screens are used, an air-sparge system should be mounted along the bottom edge of the panels to periodically pulse the sieves and prevent any accumulation of waste.
Screen supports are designed to withstand the buoyant forces of media and accommodate the full weight of media during draining. All supports are sized by structural engineers and supplied as integral components of each customized system.
 | * Case Study: Municipal Wastewater * Start Up: May 2015 * Capacity: 50,000 m3/d |
About FIxed Film Technology
An Integrated Fixed-film Activated Sludge (IFAS) process incorporates the technological benefits of traditional systems of activated sludge with biofilm systems of activated sludge with biofilm systems in a single reactor.
IFAS is employed to update and improve nitrogen removal at plants already in operation. Additionally, IFAS can also be integrated in the design plans for new plants as part of a smaller footprint during the BOD and nitrogen removal processes.
Challenges Faced by Existing Plants
The design capacity of the WWTP is 50,000,m3/d，the A2/O oxidation ditch be applied for biological treatment process, below data shows the influent and effluent parameters of the existing plant:
Project | Unit | Influent | Effluent |
COD | mg/L | 350 | 60 |
BOD | mg/L | 160 | 10 |
NH3-N | mg/L | 30 | 15 |
TN | mg/L | 40 | 20 |
The effluent parameters requirement of completed plant:
Project | Unit | Effluent |
COD | mg/L | 40 |
BOD | mg/L | 6 |
NH3-N | mg/L | 5 |
TN | mg/L | 15 |
Solution
IFAS technology addresses the need for increasing activated sludge plant capacity without additional clarifier or aeration basin volume.
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