{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,19]],"date-time":"2026-09-19T20:24:10Z","timestamp":1789849450214,"version":"4.0.1"},"reference-count":29,"publisher":"Wiley","issue":"13","license":[{"start":{"date-parts":[[2007,12,1]],"date-time":"2007-12-01T00:00:00Z","timestamp":1196467200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Water Environment Research"],"published-print":{"date-parts":[[2007,12]]},"abstract":"<jats:p>In this study, alum sludge was introduced to co\u2010conditioning and dewatering with an anaerobic digested sludge from a municipal wastewater treatment plant, to examine the role of the alum sludge in improving the dewaterbility of the mixed sludge and also in immobilizing phosphorus in the reject water. Experiments have demonstrated that the optimal mix ratio for the two sludges is 2:1 (anaerobic digested sludge:alum sludge; volume basis), and this can bring approximately 99% phosphorus reduction in the reject water through the adsorption of phosphorus by alum in the sludge. The phosphorus loading in wastewater treatment plants is itself derived from the recycling of reject water during the wastewater treatment process. Consequently, this co\u2010conditioning and dewatering strategy can achieve a significant reduction in phosphorus loading in wastewater treatment plants. In addition, the use of the alum sludge has been shown to beneficially enhance the dewaterability of the resultant mixed sludge, by decreasing both the specific resistance to filtration and the capillary suction time. This is attributed to the alum sludge acting in charge neutralization and\/or as adsorbent for phosphate in the aqueous phase of the sludge. Experiments have also demonstrated that the optimal polymer (Superfloc C2260, Cytec, Botlek, Netherlands) dose for the anaerobic digested sludge was 120 mg\/L, while the optimal dose for the mixed sludge (mix ratio 2:1) was 15 mg\/L, highlighting a huge savings in polymer addition. Therefore, from the technical perspective, the co\u2010conditioning and dewatering strategy can be viewed as a \u201cwin\u2010win\u201d situation. However, for its full\u2010scale application, integrated cost\u2010effective analysis of process capabilities, sludge transport, increased cake disposal, additional administration, polymer saving, and so on, should be factored in.<\/jats:p>","DOI":"10.2175\/106143007x184753","type":"journal-article","created":{"date-parts":[[2007,12,8]],"date-time":"2007-12-08T19:59:09Z","timestamp":1197143949000},"page":"2468-2476","source":"Crossref","is-referenced-by-count":21,"title":["Co\u2010Conditioning of the Anaerobic Digested Sludge of a Municipal Wastewater Treatment Plant with Alum Sludge: Benefit of Phosphorus Reduction in Reject Water"],"prefix":"10.1002","volume":"79","author":[{"given":"Y.","family":"Yang","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Y. Q.","family":"Zhao","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"A. 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