PMID- 32030150 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220412 IS - 2052-336X (Print) IS - 2052-336X (Electronic) VI - 17 IP - 2 DP - 2019 Dec TI - Using of indigenous bulking agents (IBAs) in complementary stabilization and enhancing of dewatered sludge class B to class a on a full scale. PG - 767-777 LID - 10.1007/s40201-019-00393-8 [doi] AB - BACKGROUND: Different bulking agents are used in the compost of dewatered sludge (DWS). The aim of this study has been using of indigenous bulking agents (IBA(s)) in the enhancing of the DWS class of municipal wastewater from class B to class A and complementary stabilization of it for production of green manure in Sari city, Iran. METHODS: Three IBAs including the Saccharum Wastes (SW), Citrus Purning Wastes (CPW) and Phragmites Australis (PA) from eight IBAs were selected to be compared with the sawdust (SD) that was as a control bulking agent. Five turned windrow piles were constructed on a full scale and on base of optimal C/N equal 25.All experiments were performed on the base of the standard methods on initial mix and final compost. RESULTS: Among five windrow piles, P5 was been the best pile with a weighting ratio of DWS to IBAs (DWS: SW: CPW: PA) equal 1: 0.2: 0.24: 0.28. Pile P1 with weighting ratio DWS: SW equal 1: 0.6, Pile P3 with weighting ratio DWS: PA equal 1: 0.84, Pile P2 with weighting ratio DWS: CPW equal 1: 0.73 and Pile P4 with weighting ratio DWS: SD equal 1: 0.57 were placed in the next rounds. The results showed that the class of DWS enhanced to Class A for about 80 to 97 days and complementary stabilization of DWS by IBAs was done well and produced green manure in term of organic matter, potassium, germination index, PH, C/N and electrical conductivity had reached to the Grade 1 of Iran's manure 10716 standard and in term of phosphorus and moisture had reached to the Grade 2 of this standard. Also heavy metals were below the maximum permissible of standards. CONCLUSION: Using of IBAs, had a higher efficiency than the control bulking agent (sawdust) in enhancing sludge class and its stabilization, so that using of them in combination (mix of IBA(s)) had the highest efficiency and respectively, Saccharum Wastes (SW), Phragmites Australis (PA), Citrus pruning wastes (CPW) were placed in the next round, and sawdust was placed after them. By adding suitable IBA(S,) with an optimal ratio in turned windrow method, the class of DWS of sari WWTP enhanced to Class A and complementary stabilization of DWS has been well done and the produced green manure has been reached to agricultural standards and can be safely used in agriculture. CI - (c) Springer Nature Switzerland AG 2019. FAU - Aghili, Seyed Mostafa AU - Aghili SM AUID- ORCID: 0000-0002-4827-4305 AD - 1School of Environment, College of Engineering, University of Tehran, Tehran, Iran. GRID: grid.46072.37. ISNI: 0000 0004 0612 7950 FAU - Mehrdadi, Nasser AU - Mehrdadi N AD - 1School of Environment, College of Engineering, University of Tehran, Tehran, Iran. GRID: grid.46072.37. ISNI: 0000 0004 0612 7950 FAU - Aminzadeh, Behnoush AU - Aminzadeh B AD - 1School of Environment, College of Engineering, University of Tehran, Tehran, Iran. GRID: grid.46072.37. ISNI: 0000 0004 0612 7950 FAU - Zazouli, Mohammad Ali AU - Zazouli MA AD - 2Department of Environmental Health Engineerig, School of Health, Medical Science University of Mazandaran, Sari, Iran. GRID: grid.411622.2. ISNI: 0000 0000 9618 7703 LA - eng PT - Journal Article DEP - 20190718 PL - England TA - J Environ Health Sci Eng JT - Journal of environmental health science & engineering JID - 101613643 PMC - PMC6985304 OTO - NOTNLM OT - Class A OT - Enhancing of dewatered sludge class OT - Full scale OT - Green manure OT - Indigenous bulking agents (IBAs) COIS- Conflict of interestThe authors would like to declare that there is no conflict of interest with this research and in the publication. EDAT- 2020/02/08 06:00 MHDA- 2020/02/08 06:01 PMCR- 2020/07/18 CRDT- 2020/02/08 06:00 PHST- 2019/01/21 00:00 [received] PHST- 2019/07/09 00:00 [accepted] PHST- 2020/02/08 06:00 [entrez] PHST- 2020/02/08 06:00 [pubmed] PHST- 2020/02/08 06:01 [medline] PHST- 2020/07/18 00:00 [pmc-release] AID - 393 [pii] AID - 10.1007/s40201-019-00393-8 [doi] PST - epublish SO - J Environ Health Sci Eng. 2019 Jul 18;17(2):767-777. doi: 10.1007/s40201-019-00393-8. eCollection 2019 Dec.