GM foods are classified into one of three generations. First-generation crops have enhanced input traits, such as herbicide tolerance, better insect resistance, and better tolerance to environmental stress.
Sewage treatment. Sewage treatment is the process of removing contaminants from wastewater, primarily from household sewage. It includes physical, chemical, and biological processes to remove these contaminants and produce environmentally safe treated wastewater (or treated effluent).
SUBMERSIBLE WASTEWATER LIFT STATIONS. The submersible type lift station can be utilized on low flow, low head type installations. Two types of pumps are available for this application, grinder pumps and solids handling pumps. A properly designed wet well is essential for efficient and trouble-free operation of the pump or lift station.