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Two ways to achieve an anammox influent from real reject water treatment at lab-scale: Partial SBR nitrification and SHARON process

Paper ID Volume ID Publish Year Pages File Format Full-Text
36032 45118 2007 6 PDF Available
Title
Two ways to achieve an anammox influent from real reject water treatment at lab-scale: Partial SBR nitrification and SHARON process
Abstract

A comparative study to produce the correct influent for Anammox process from anaerobic sludge reject water (700–800 mg NH4+-N L−1) was considered here. The influent for the Anammox process must be composed of NH4+-N and NO2−-N in a ratio 1:1 and therefore only a partial nitrification of ammonium to nitrite is required. The modifications of parameters (temperature, ammonium concentration, pH and solid retention time) allows to achieve this partial nitrification with a final effluent only composed by NH4+-N and NO2−-N at the right stoichiometric ratio. The equal ratio of HCO3−/NH4+ in reject water results in a natural pH decrease when approximately 50% of NH4+ is oxidised. A Sequencing batch reactor (SBR) and a chemostat type of reactor (single-reactor high activity ammonia removal over nitrite (SHARON) process) were studied to obtain the required Anammox influent. At steady state conditions, both systems had a specific conversion rate around 40 mg NH4+-N g−1 volatile suspended solids (VSS) h−1, but in terms of absolute nitrogen removal the SBR conversion was 1.1 kg N day−1 m−3, whereas in the SHARON chemostat was 0.35 kg N day−1 m−3 due to the different hydraulic retention time (HRT) used. Both systems are compared from operational (including starvation experiments) and kinetic point of view and their advantages/disadvantages are discussed.

Keywords
Anammox; Nitrite; Partial nitrification; Reject water; SHARON; SBR
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Two ways to achieve an anammox influent from real reject water treatment at lab-scale: Partial SBR nitrification and SHARON process
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Publisher
Database: Elsevier - ScienceDirect
Journal: Process Biochemistry - Volume 42, Issue 4, April 2007, Pages 715–720
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us