{"product_id":"9781843397526","title":"Develop And Demonstrate Fundamental Basis For Selectors To Improve Activated Sludge Settleability","description":"Successful operation of the activated sludge process relies heavily on the ability to effectively separate mixed liquor into return activated sludge (RAS) and a high quality final effluent. Solids separation efficiency is dictated in large part by the relative population of floc-forming and filamentous microorganisms present in the activated sludge.\u003cp\u003eDuring normal operation, mixed liquor will be composed primarily of floc-formers with relatively low levels of filamentous organisms. Some population of filamentous organisms is necessary to promote the formation of larger flocs and prevent development of a \"pin-floc\" condition, which often results in high effluent turbidities (Jenkins, 2004). However, when conditions favoring the growth of filaments over floc-formers occur, a condition commonly referred to as filamentous \"bulking\" may occur.\u003c\/p\u003e","brand":"IWA Publishing","offers":[{"title":"Default Title","offer_id":47056148889840,"sku":"9781843397526","price":168.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0737\/7593\/9824\/files\/9781843397526_p0.jpg?v=1763742839","url":"https:\/\/shop-qa.barnesandnoble.com\/products\/9781843397526","provider":"Barnes \u0026 Noble (DEV)","version":"1.0","type":"link"}