It is unlawful for any person, firm or corporation conducting any hotel, restaurant or any public eating place to deposit, throw or place swill or other refuse matter in a lane, alley, street or other public place, or to deposit, throw or place any swill upon any property, regardless of ownership, unless the swill is enclosed in vessels or tanks of a type approved by the sanitation technician, and which are perfectly watertight and have tightly fitting covers, which covers shall not be removed, except when absolutely necessary for the depositing and removal of swill. Such vessels or tanks shall be kept in the rear of the premises or in the basement, or other place authorized by the sanitation technician, so as to be readily accessible for collection and shall not be kept upon the street, alley or sidewalk or public place. All tanks or vessels shall be promptly delivered to the collector when called for and shall be returned by him without necessary delay, and no person, except for the purpose of collection under license, shall in any manner interfere with the vessel or tanks or with contents thereof.