{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,4]],"date-time":"2025-10-04T12:19:26Z","timestamp":1759580366613},"reference-count":31,"publisher":"IWA Publishing","issue":"9","content-domain":{"domain":["iwaponline.com"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2015,11,11]]},"abstract":"<jats:p>The effect of direct addition of chlorine dioxide (ClO2) into a repeatedly alternating aeration\/non-aeration sequencing batch reactor (SBR) on its sludge reduction and process performance was investigated. The experimental results showed that the sludge reduction efficiency was 32.9% and the observed growth yield (Yobs) of SBR was 0.11 kg VSS (volatile suspended solids) \/kg COD (chemical oxygen demand) for 80 days\u2019 operation at the optimum ClO2 dosage of 2.0 mg\/g TSS (total suspended solids). It was speculated that cell lysis and cryptic growth, uncoupled metabolism and endogenous metabolism were jointly responsible for the sludge reduction in this study. COD, NH3-N, total nitrogen (TN) and total phosphorus (TP) in the effluent increased on average 29.47, 4.44, 1.97 and 0.05 mg\/L, respectively. However, the effluent quality still satisfied the first-class B discharge standards for municipal wastewater treatment plants in China. In that case, the sludge maintained fine viability with the specific oxygen uptake rate (SOUR) being 14.47 mg O2\/(g VSS\u00b7h) and demonstrated good settleability with the sludge volume index (SVI) being 116 mL\/g. The extra cost of sludge reduction at the optimum ClO2 dosage was estimated to be 2.24 CNY (or 0.36 dollar)\/kg dry sludge.<\/jats:p>","DOI":"10.2166\/wst.2015.371","type":"journal-article","created":{"date-parts":[[2015,12,8]],"date-time":"2015-12-08T20:50:56Z","timestamp":1449607856000},"page":"1534-1542","update-policy":"http:\/\/dx.doi.org\/10.2166\/iwapcrossmarkpolicypage","source":"Crossref","is-referenced-by-count":3,"title":["Sludge reduction by direct addition of chlorine dioxide into a sequencing batch reactor under operational mode of repeatedly alternating aeration\/non-aeration"],"prefix":"10.2166","volume":"72","author":[{"given":"Hong","family":"Peng","sequence":"first","affiliation":[{"name":"College of Environmental Sciences, Sichuan Agricultural University, 611130 Chengdu, Sichuan, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Weiyi","family":"Liu","sequence":"first","affiliation":[{"name":"College of Environmental Sciences, Sichuan 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