Abstract: This application relates to wearable devices and sound pickup methods. An example method includes: displaying a first interface in response to a first operation, where the first interface is used to configure a sound pickup direction; and determining a target sound pickup direction in response to a second operation detected on the first interface. In some instances, the electronic device can provide a sound pickup direction configuration function by using the first interface, so that a user can select the target sound pickup direction based on an actual application situation, and the electronic device can directly pick up a sound signal based on the target sound pickup direction in a subsequent sound pickup process, or perform signal enhancement processing on a picked-up original sound signal based on the target sound pickup direction to obtain an enhanced sound signal in the target sound pickup direction in the original sound signal.

Abstract: A method for treating an oil-containing aqueous mixture comprising the step of passing the mixture (1) through a media (6) comprising a bead-form cation exchange resin combined with a cationic surfactant, wherein the resin includes a sulfonated crosslinked copolymer matrix having a rough surface characterized by having a frequency of at least 5 peaks and valleys per sample surface area (283 um×212 um), where the difference between the average height of the 5 highest peaks and the 5 lowest valleys is at least 6 ?m.

Abstract: A method for treating an oil-containing aqueous mixture comprising the step of passing the mixture (1) through a media (6) comprising a low bead-form cation exchange resin combined with a cationic surfactant, wherein the resin includes a sulfonated crosslinked copolymer matrix having a rough surface characterized by having a frequency of at least 5 peaks and valleys per sample surface area (283 ?m×212 ?m), where the difference between the average height of the 5 highest peaks and the 5 lowest valleys is at least 6 ?m.

Abstract: A process for treating coking wastewater contains the steps of passing the coking wastewater in such an order through coagulation, particles removal, and ion-exchange resin.