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    COMBINED LOGIC CONTROL CIRCUIT AND SEWAGE TREATMENT SYSTEM
    1.
    发明申请
    COMBINED LOGIC CONTROL CIRCUIT AND SEWAGE TREATMENT SYSTEM 有权

    公开(公告)号：US20220271751A1

    公开(公告)日：2022-08-25

    申请号：US17668168

    申请日：2022-02-09

    申请人： YUNNAN HEXU ENVIRONMENTAL TECHNOLOGY CO., LTD.

    发明人： Wensheng Li ,  Jingguo Ding ,  Jiesheng Luo ,  Ranrong Liu

    IPC分类号： H03K19/003 ,  C02F1/00

    摘要： A combined logic control circuit and a sewage treatment system are provided. The combined logic control circuit includes: at least one signal input component, a control component and at least one signal output component; each signal input component transmits at least one path of first communication signal in a photoelectric isolated manner and converts the first communication signal into a second communication signal; the control component generates at least one path of first control signal according to the at least one path of second communication signal; and each signal output component processes one path of the first control signal to control at least one external electrical device, thereby implementing a particular circuit function; and the power switch component provides power supply to the various circuit components in a photoelectric isolated manner.

    METHOD FOR ADVANCED NITROGEN AND PHOSPHORUS REMOVAL IN SEWAGE TREATMENT
    2.
    发明申请
    METHOD FOR ADVANCED NITROGEN AND PHOSPHORUS REMOVAL IN SEWAGE TREATMENT 有权

    公开(公告)号：US20220017393A1

    公开(公告)日：2022-01-20

    申请号：US17488420

    申请日：2021-09-29

    申请人： YUNNAN HEXU ENVIRONMENTAL TECHNOLOGY CO., LTD.

    发明人： Wensheng Li ,  Jianmin Zhang ,  Jun Yang ,  Weihua Chen ,  Zhishuai Wang ,  Hongchang Zhou ,  Peng Deng ,  Jing Liao

    IPC分类号： C02F3/30 ,  C02F3/10

    摘要： A method for advanced nitrogen and phosphorus removal in sewage treatment includes the following steps: feeding raw water and return sludge into a pre-denitrification zone for denitrification; allowing a sludge-containing mixed liquor discharged from the pre-denitrification zone to enter an anaerobic zone to undergo a biological phosphorus removal reaction; allowing a sludge-containing mixed liquor discharged from the anaerobic zone and a return nitrification liquid to enter an anoxic zone for denitrification; allowing a sludge-containing mixed liquor discharged from the anoxic zone to enter an aerobic zone for nitrification and excessive phosphorus uptake, and allowing part of a nitrification liquid to be returned to the anoxic zone; allowing a sludge-containing mixed liquor discharged from the aerobic zone to enter a sedimentation zone for separation; passing a resulting supernatant through a biological filtration zone; returning part of resulting sludge to the pre-denitrification zone; and the like.

    DEVICE FOR ADVANCED NITROGEN AND PHOSPHORUS REMOVAL IN SEWAGE TREATMENT
    4.
    发明申请
    DEVICE FOR ADVANCED NITROGEN AND PHOSPHORUS REMOVAL IN SEWAGE TREATMENT 有权

    公开(公告)号：US20220017394A1

    公开(公告)日：2022-01-20

    申请号：US17488635

    申请日：2021-09-29

    申请人： YUNNAN HEXU ENVIRONMENTAL TECHNOLOGY CO., LTD.

    发明人： Wensheng Li ,  Ranrong Liu ,  Xin Zhang ,  Zheng Lv ,  Yulong Li ,  Yiqiu Fang ,  Fei Xia

    IPC分类号： C02F3/30

    摘要： A device for advanced nitrogen and phosphorus removal in sewage treatment includes a pre-denitrification zone, an anaerobic zone, an anoxic zone, an aerobic zone, a sedimentation zone, a biological filtration zone, and a clear water zone, where a sludge return system is provided between the pre-denitrification zone and the sedimentation zone; a nitrification liquid return system is provided between the anoxic zone and the aerobic zone; a filler layer is provided in the biological filtration zone, and the filler layer divides a cavity in the biological filtration zone to form an upper water inlet cavity and a lower water outlet cavity; a backwash aeration pipe is provided in the water outlet cavity, and a backwash water outlet is formed in the water inlet cavity; and the backwash water outlet is connected to a sludge concentration and storage tank or the pre-denitrification zone.