Title:
METHOD FOR PREPARING SLUDGE CONDITIONER FROM WATER SUPPLY SLUDGE AND APPLICATION OF SLUDGE CONDITIONER
Document Type and Number:
WIPO Patent Application WO/2023/077882
Kind Code:
A1
Abstract:
Disclosed in the present invention are a method for preparing a sludge conditioner from water supply sludge and an application of the sludge conditioner. The conditioner is prepared by mixing water supply sludge and sewage sludge. The water supply sludge and the sludge from a sewage plant are mixed in proportion, a pore forming agent is added, the mixture is stirred uniformly, mechanical dehydration is performed, and then air drying, grinding, screening and pyrolysis are performed to obtain the sludge conditioner. The conditioner is used to condition sludge by means of advanced oxidation technologies such as catalyzing/activating ozone, persulfate, and Fenton, so as to enhance dehydration performance. In the present invention, sludge from a water supply plant and a sewage plant is used to prepare a sludge carbon-based conditioner having efficient catalysis performance and adsorption performance, and in combination with advanced oxidation chemical conditioning technologies, the conditioner efficiently enhances sludge dehydration performance, absorbs heavy metals, reduces the amount of the agent, saves the costs of subsequent sludge transportation and treatment, and achieves the collaborative recycling of multi-source sludge.
Inventors:
DONG BIN (CN)
XIAO TINGTING (CN)
XU ZUXIN (CN)
WU HAIBIN (CN)
WANG DIANCHANG (CN)
LI CHONG (CN)
SHEN DANNI (CN)
WANG XIANKAI (CN)
LIU FENG (CN)
CHEN SISI (CN)
XIAO TINGTING (CN)
XU ZUXIN (CN)
WU HAIBIN (CN)
WANG DIANCHANG (CN)
LI CHONG (CN)
SHEN DANNI (CN)
WANG XIANKAI (CN)
LIU FENG (CN)
CHEN SISI (CN)
Application Number:
PCT/CN2022/108161
Publication Date:
May 11, 2023
Filing Date:
July 27, 2022
Export Citation:
Assignee:
UNIV TONGJI (CN)
CHINA THREE GORGES CORP (CN)
THREE GORGES ENVIRONMENTAL TECH CO LTD (CN)
CHINA THREE GORGES CORP (CN)
THREE GORGES ENVIRONMENTAL TECH CO LTD (CN)
International Classes:
C02F11/143; C02F11/00; C02F11/06
Foreign References:
| CN114044620A | 2022-02-15 | |||
| CN107459237A | 2017-12-12 | |||
| US6362127B1 | 2002-03-26 | |||
| CN106753462A | 2017-05-31 | |||
| CN102757255A | 2012-10-31 | |||
| CN110092553A | 2019-08-06 |
Other References:
YANGYANG YOU, LU XUEQIANG, XU DANYU, ZHANG TAO, SHI YAN, YANG ANG: "Degradation of Rhodamine B in Water by Ozone Oxidation Catalyzed by Composite Sludge-Based Activated Carbon ", INDUSTRIAL WATER TREATMENT, vol. 35, no. 1, 20 January 2015 (2015-01-20), pages 56 - 59, XP093062947
Attorney, Agent or Firm:
BEIJING GAOWO LAW FIRM (CN)
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