Screening Screening is the first unit operation used at wastewater treatment plants (WWTPs). Screening removes objects such as rags, paper, plastics, and metals to prevent damage and clogging of downstream equipment, piping, and appurtenances. Some modern wastewater treatment plants use both coarse screens and fine screens. Figure 1 depicts a typical bar screen (a type of coarse screen). Coarse Screens Coarse screens remove large solids, rags, and debris from wastewater, and typically have openings of 6 mm (0.25 in) or larger. Types of coarse screens include mechanically and manually cleaned bar screens, including trash racks. Table 1 describes the various types of coarse screens. Fine Screens
About Long Island. Long Island New York is the largest island adjoining the contiguous United States, extending approximately 118 miles east-northeast from the mouth of the Hudson River. It is separated from the mainland on the north by the Long Island Sound and bounded by the Atlantic Ocean on the south and east.
Long Island: North Merrick. North Merrick is a community and census-designated place located in Nassau County, on the South Shore of Long Island, New York.It has a total area of 1.8 square miles of which, 1.8 square miles of it is land and 0.56% is water.here are several house of worships can be found in North Merrick such as Sacred Heart Roman Catholic Church and Congregation Ohav Sholom. The Sacred Heart Church has a number of parish organizations and a host of ministries. Find a list of Long Island Towns and hamlets in our Long Island towns section.