If the tank. is too small for the quantity of flow and the settling rate of. the particles, too many particles will be carried out the. effluent of the clarifier. The relationship of detention time. to settling rate of the particles is important.
Definition. Type of promotion that relies on public relations effect of a news story carried usually free by mass media. The main objective of publicity is not sales promotion, but creation of an image through editorial or ' independent source ' commentary. While the publicist can control the content of the story, he or she may not have any control over its placement or interpretation by the media.
1 Good advertising will sell a product by PR jobs involve âsellingâ the company or brand as a whole and this can be done in a number of ways. 2  Public relations jobs require the use of a lot of media and communications mediums to communicate key messages and build reputations. This can also be done through sponsorship of certain events or charities to increase the goodwill and mutual understanding between a company and the public. 2  PR careers require the individual to be very motivated and confident; good interpersonal and communicative skills are also essential to be successful in PR jobs.