活性炭炭粉对水处理设备污染防治的工程实践

Prevention and Control of Fouling in Water Treatment Equipment Caused by Activated Carbon Powder

Q再生水厂进水有机物含量高,采用活性炭吸附法去除COD的过程中,带来了炭粉对后端水处理设备的污堵问题。为解决此问题,首先必须严格控制活性炭的质量,即采购清洗过的大颗粒高强度活性炭,并使其炭粉含量低于0. 5%。运行中活性炭产水在经过产水槽初步沉降后,采用200μm金属滤网、2μm自清洗过滤器与0. 02μm超滤膜组成三级过滤装置,超滤系统的反洗周期为2. 5 h,清洗活性炭并定期清理活性炭产水槽,可有效避免活性炭炭粉的污堵情况,保证正常生产运行。

The influent of reclaimed wastewater treatment plant Q had high organic content, and COD was removed by activated carbon adsorption method. However, the activated carbon powder also caused fouling in the subsequent water treatment equipment. To prevent fouling, the quality of activated carbon must be strictly controlled. In detail, the large granule and high intensity activated carbon had to be washed and cleaned, and the content of carbon powder had to be below 0.5 %. The effluent from the granular active carbon treatment was initially settled in the production sink, and subsequently treated by a three-level filtration device, which consisted of a 200 μm metal filter, a 2 μm self-cleaning filter, and a0.02 μm uhrafihration component. The uhrafihration backwash cycle was 2.5 h. Regular washing of the granular activated carbon and cleaning of the production sink could effectively control the fouling of acti- vated carbon powder and maintain the production operation.