公开(公告)号：US07083728B2

公开(公告)日：2006-08-01

申请号：US10669462

申请日：2003-09-25

Applicant: Terry J. Logan ,  Michael G. Nicholson ,  Neil Webster

Inventor： Terry J. Logan ,  Michael G. Nicholson ,  Neil Webster

IPC: C02F3/00

CPC classification number: C02F11/14 ,  C02F1/66 ,  C02F11/185 ,  C02F2209/005

Abstract: A method and system for treating at least bioorganic, organic, wastewater, and sewage sludge using recycle. The method of producing a treated sludge product comprises the following steps: (a) forming a sludge mixture by mixing untreated sludge with at least one alkaline material in an amount sufficient to raise pH of the sludge mixture to a level of at least about 12 and to increase percent solids in the sludge mixture to at least about 40% by weight; (b) forming a dried sludge mixture by drying the sludge mixture from step (a) in a direct or indirect dryer thereby increasing the percent solids thereof to at least about 50% by weight; (c) recycling a portion of the dried sludge mixture from step (b) to step (a); and (d) pasteurizing the dried sludge mixture from step (b) at a temperature at or above about 52° C. to form a treated sludge product. Exemplary applications for the treated sludge product include an agricultural liming agent, a soil conditioner, a fertilizer, a topsoil blend ingredient, and a fuel.

Abstract translation: 一种利用再循环处理至少生物有机，有机，废水和污水污泥的方法和系统。 生产经处理的污泥产品的方法包括以下步骤：（a）通过将未处理的污泥与至少一种碱性物质混合形成污泥混合物，其量足以将污泥混合物的pH提高到至少约12的水平， 将污泥混合物中的固体百分比增加至至少约40重量％; （b）通过在直接或间接干燥器中干燥来自步骤（a）的污泥混合物形成干燥的污泥混合物，从而将其固体百分比增加至至少约50重量％; （c）将一部分干燥的污泥混合物从步骤（b）循环到步骤（a）; 和（d）在等于或高于约52℃的温度下将来自步骤（b）的干燥的污泥混合物巴氏杀菌以形成经处理的污泥产物。 经处理的污泥产品的示例性应用包括农用石灰剂，土壤调节剂，肥料，表土混合物成分和燃料。

公开(公告)号：US20050067348A1

公开(公告)日：2005-03-31

申请号：US10669462

申请日：2003-09-25

Applicant: Terry Logan ,  Michael Nicholson ,  Neil Webster

Inventor： Terry Logan ,  Michael Nicholson ,  Neil Webster

IPC: C02F1/66 ,  C02F3/00

CPC classification number: C02F11/14 ,  C02F1/66 ,  C02F11/185 ,  C02F2209/005

Abstract: A method and system for treating at least bioorganic, organic, wastewater, and sewage sludge using recycle. The method of producing a treated sludge product comprises the following steps: (a) forming a sludge mixture by mixing untreated sludge with at least one alkaline material in an amount sufficient to raise pH of the sludge mixture to a level of at least about 12 and to increase percent solids in the sludge mixture to at least about 40% by weight; (b) forming a dried sludge mixture by drying the sludge mixture from step (a) in a direct or indirect dryer thereby increasing the percent solids thereof to at least about 50% by weight; (c) recycling a portion of the dried sludge mixture from step (b) to step (a); and (d) pasteurizing the dried sludge mixture from step (b) at a temperature at or above about 52° C. to form a treated sludge product. Exemplary applications for the treated sludge product include an agricultural liming agent, a soil conditioner, a fertilizer, a topsoil blend ingredient, and a fuel.

Abstract translation: 一种利用再循环处理至少生物有机，有机，废水和污水污泥的方法和系统。 生产经处理的污泥产品的方法包括以下步骤：（a）通过将未处理的污泥与至少一种碱性物质混合形成污泥混合物，其量足以将污泥混合物的pH提高到至少约12的水平， 将污泥混合物中的固体百分比增加至至少约40重量％; （b）通过在直接或间接干燥器中干燥来自步骤（a）的污泥混合物形成干燥的污泥混合物，从而将其固体百分比增加至至少约50重量％; （c）将一部分干燥的污泥混合物从步骤（b）循环到步骤（a）; 和（d）在等于或高于约52℃的温度下将来自步骤（b）的干燥的污泥混合物巴氏杀菌以形成经处理的污泥产物。 经处理的污泥产品的示例性应用包括农用石灰剂，土壤调节剂，肥料，表土混合物成分和燃料。