ZOUKangbing,LUShaoming,QIWenguang,et al.Pilot-scale Research and Engineering Demonstration on Thallium Removal from Well Water by Ceramisite Expanded Bed Filter Loaded with Manganese Catalytic Film[J].China Water & Wastewater,2026,42(5):35-40.
Click Copy

Pilot-scale Research and Engineering Demonstration on Thallium Removal from Well Water by Ceramisite Expanded Bed Filter Loaded with Manganese Catalytic Film

China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU] volume: 第42卷 Number: 第5期 Page: 35-40 Column: Date of publication: 2026-03-01
Author(s):
ZOU　Kangbing1;  LU　Shaoming2;  QI　Wenguang3;  KUANG　Ke4;  YANG　Li2;  GUO　Yuxuan2
（1. Guangzhou Water Supply Co. Ltd.， Guangzhou 510000， China； 2. School of Environment and Energy， South China University of Technology， Guangzhou 510006， China； 3. Guangzhou Huadu Water Supply Co. Ltd.， Guangzhou 510801， China； 4. Guangzhou Sewage Purification Co. Ltd.， Guangzhou 510655， China）
Keywords:
drinking water treatment;  thallium;  ceramsite expanded bed filter;  potassium permanganate;  nascent?state manganese dioxide;  manganese catalytic film
Abstract:
Based on the process of ceramsite expanded bed filter (EBF) loaded with manganese catalytic film, a thallium removal treatment system of rural well water with a scale of 1 m3/h was constructed for a pilot-scale study. The results showed that the key factors for thallium removal were the dosage of potassium permanganate and the catalytic effect of promoting the formation of nascent-state manganese dioxide. The thallium removal method was that the hydroxyl groups on the surface of the nascent-state manganese dioxide underwent ion exchange with Tl(Ⅰ), and the nascent?state manganese dioxide was adsorbed through the manganese catalytic film on the surface of the ceramsite to achieve thallium removal from well water. Based on the pilot test, a demonstration engineering for thallium removal from well water with a scale of 120 m3/d was established in a village in Guangdong Province. During a three-year operation, when the influent Tl(Ⅰ) concentration was 0.23-0.52 μg/L and potassium permanganate dosage was 0.35-0.50 mg/L, the effluent Tl(Ⅰ) concentration ranged from 0.01 μg/L to 0.06 μg/L, achieving a compliance rate of 100%. This thallium removal system has the advantages of stable effluent quality, no secondary pollution, no need for EBF regeneration, unattended operation and low operating costs. It effectively solves the problem of thallium removal in rural drinking well water.
Last Update: 2026-03-01