Invention Grant
- Patent Title: Improving sludge dewaterability and energy balance of wastewater treatment
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Application No.: US16093029Application Date: 2017-04-07
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Publication No.: US10703662B2Publication Date: 2020-07-07
- Inventor: Joonas Likander , Sakari Halttunen , Outi Grönfors , Bengt Hansen
- Applicant: Kemira Oyj
- Applicant Address: FI Helsinki
- Assignee: Kemira Oyj
- Current Assignee: Kemira Oyj
- Current Assignee Address: FI Helsinki
- Agency: Moser Taboada
- Priority: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@7ddf454c
- International Application: PCT/EP2017/058345 WO 20170407
- International Announcement: WO2017/178356 WO 20171019
- Main IPC: C02F11/14
- IPC: C02F11/14 ; C02F1/52 ; C02F1/56 ; C02F3/28 ; C02F1/00 ; C02F11/04 ; C02F1/38 ; C02F11/147 ; C02F11/143
Abstract:
The present invention relates to a process for treating primary sludge in a wastewater treatment plant, comprising the steps of admixing an organic coagulant and/or polymer to wastewater; allowing a primary treatment of the wastewater in the presence of the organic coagulant or polymer; separating solids as a primary sludge from said primary treatment; and dewatering the primary sludge. The present invention further relates to a method of improving primary sludge dewaterability and improving energy balance of a wastewater treatment plant.
Public/Granted literature
- US20190144321A1 IMPROVING SLUDGE DEWATERABILITY AND ENERGY BALANCE OF WASTEWATER TREATMENT Public/Granted day:2019-05-16
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