Assignee
BEIJING DRAINAGE GROUP CO LTD
CN·5 granted patents·5 pending applications·1 citations·filing 2019–2022
Top patents by PatentIndex Score
10 records- 0176US11702354B2Bacterium-alga coupled sewage treatment device based on energy recycling and use method thereofBEIJING DRAINAGE GROUP CO LTD·Filed 2020·Granted Jul 18, 2023·1 cites·7 claims
- 0266US2023298705A1Online Model Water Quality Conversion Method and System, Electronic Device, and MediumBEIJING DRAINAGE GROUP CO LTD·Filed 2021·Application pending·0 cites
- 0354US12454477B2Method and system for enhanced culture of aerobic granular sludgeBEIJING DRAINAGE GROUP CO LTD·Filed 2021·Granted Oct 28, 2025·0 cites·10 claims
- 0454US2024375985A1Sludge and kitchen waste collaborative digestion process coupled with intermediate thermal hydrolysisBEIJING DRAINAGE GROUP CO LTD·Filed 2022·Application pending·0 cites
- 0554US2024140848A1Electrochemical nitrogen and phosphorus removal device and methodBEIJING DRAINAGE GROUP CO LTD·Filed 2021·Application pending·0 cites
- 0653US2024190724A1Bidirectional flow pulse-based water body phosphorus removal apparatus and method, and organic nutrient soilBEIJING DRAINAGE GROUP CO LTD·Filed 2021·Application pending·0 cites
- 0752US2024375986A1Method for conditioning advanced anaerobic digestion sludge by deep dehydration based on particle size control, use thereof and floc particleBEIJING DRAINAGE GROUP CO LTD·Filed 2022·Application pending·0 cites
- 0850US12398056B2Sewage treatment system and method of continuous flow step-feed short-cut denitrification-anaerobic ammonia oxidation coupled with denitrificationBEIJING DRAINAGE GROUP CO LTD·Filed 2021·Granted Aug 26, 2025·0 cites·10 claims
- 0948US11339069B2Anaerobic ammoxidation synergistic nitrogen removal process device of municipal sewage main and side streams and application method thereofBEIJING DRAINAGE GROUP CO LTD·Filed 2019·Granted May 24, 2022·0 cites·3 claims
- 1046US11858838B2Sewage uniform distribution treatment device for aerobic granular sludge system and use method thereforBEIJING DRAINAGE GROUP CO LTD·Filed 2019·Granted Jan 2, 2024·0 cites·8 claims
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