Abstract: The present disclosure provides a vehicle trajectory deviation correction method and apparatus, and electronic device. The method include: obtaining a first road trajectory, wherein the first road trajectory includes multiple first trajectory points; obtaining trajectory display information of the first road trajectory with respect to an electronic map, wherein the trajectory display information includes information of road positions on the electronic map that match the multiple first trajectory points; splitting the first road trajectory into N trajectory segments based on a road structure of the first road trajectory, each trajectory segment including M consecutive first trajectory points, and each trajectory segment having a single path direction which is the path direction from the first to the last of the M first trajectory points in the trajectory segment; correcting a vehicle trajectory deviation on the electronic map based on the N trajectory segments and the trajectory display information.

Abstract: A method of conditioning mixed liquor in a membrane bioreactor includes dispersing a treatment additive in the mixed liquor. The treatment additive includes a water soluble block copolymer. Methods for improving flux in a membrane bioreactor and clarifying wastewater are also provided.

Abstract: Disclosed is a method of conditioning mixed liquor in a membrane bioreactor (MBR) system comprising adding an effective amount of a tannin containing polymer to the mixed liquor. Also disclosed is a method of improving flux in an MBR system comprising adding an effective amount of a tannin containing polymer to mixed liquor of the MBR. An effective amount of the tannin containing polymer may be added separately or in combination with other water soluble sludge filterability improvement polymers or sludge filterability improvement inorganic coagulants to the mixed liquor of the MBR. In one embodiment, the tannin containing polymer is a water soluble or dispersible copolymer of a tannin and a cationic monomer. In another embodiment, the tannin containing polymer is a water soluble or dispersible polymer of a tannin, a cationic monomer, and at least one monomer.