专利 已放弃

SLUDGE TREATMENT METHOD AND APPARATUS THEREOF AND APPLICATION TO WASTEWATER BIO-TREATMENT

Overview

关于老挝专利「SLUDGE TREATMENT METHOD AND APPARATUS THEREOF AND APPLICATION TO WASTEWATER BIO-TREATMENT」，老商通整理了如下公开信息，由 LI, DAYONG 于 2010-05-28 提交申请，当前状态为已放弃。标识字段包括：申请号 P/196；DIP 编号 LAP196；主管局代码 LA；保护类型 Patent - PCT National Phase。时间线要点：公开/公告日 2025-12-12。国际分类 / IPC 标注为 C02F 11/02、C02F 3/12、C02F 3/30。发明人 / 设计人包括 LI, Dayong、LI, Jinmin、ZHOU, Liankui。申请人还包括 LI, JINMIN、ZHOU, LIANKUI。代理机构 / 代理人记载为 Lao Trademark Agency。

专利 老挝 DIP

申请号 P/196
申请日期 2010-05-28
申请人 LI, DAYONG；LI, JINMIN；ZHOU, LIANKUI
代理机构 Lao Trademark Agency
类别 C02F 11/02 · C02F 3/12 · C02F 3/30

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基础信息

类型
专利
申请号
P/196
状态
已放弃
申请人
LI, DAYONG；LI, JINMIN；ZHOU, LIANKUI
代理机构
Lao Trademark Agency
申请日期
2010-05-28
公开/公告日
2025-12-12
国际分类
C02F 11/02 · C02F 3/12 · C02F 3/30
商品 / 服务
—

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摘要

The present invention provides a method for sludge treatment, comprising the following steps: (1) mixing a sludge feed from a sewage biotreatment process with a first mixed liquor to obtain a second mixed liquor; (2) subjecting the second mixed liquor to an oxygen-supplying process to obtain a third mixed liquor; (3) subjecting the third mixed liquor to an anoxic process to obtain a fourth mixed liquor; (4) separating the fourth mixed liquor to obtain a supernatant liquid and a first concentrated mixed liquor; (5) discharging the supernatant liquid, and returning at least a part of the first concentrated mixed liquor as the first mixed liquor to the step (1), wherein the amoount of sludge of the first concentrated mixed liquor that does not return to the step (1) is less than the amount of sludge of the sludge feed. The present invention further relates to the use of the method for sludge treatment in sewage treatment. The method for sludge treatment can achieve a long term stable run without sludge discharge.

The present invention provides a method for sludge treatment, comprising the following steps: (1) mixing a sludge feed from a sewage biotreatment process with a first mixed liquor to obtain a second mixed liquor; (2) subjecting the second mixed liquor to an oxygen-supplying process to obtain a third mixed liquor; (3) subjecting the third mixed liquor to an anoxic process to obtain a fourth mixed liquor; (4) separating the fourth mixed liquor to obtain a supernatant liquid and a first concentrated mixed liquor; (5) discharging the supernatant liquid, and returning at least a part of the first concentrated mixed liquor as the first mixed liquor to the step (1), wherein the amoount of sludge of the first concentrated mixed liquor that does not return to the step (1) is less than the amount of sludge of the sludge feed. The present invention further relates to the use of the method for sludge treatment in sewage treatment. The method for sludge treatment can achieve a long term stable run without sludge discharge.

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