摘要：

竹子深加工产业因在碳中和进程中的重要作用而快速发展。针对鲜竹提取液生产废水有机污染物成分复杂、COD高、可生化性低等特点，采用铁碳微电解-Fenton氧化联用水解酸化-移动床生物膜反应器（MBBR）两级生化工艺进行处理。运行结果表明，铁碳微电解产生的新生态Fe²⁺可催化Fenton系统生成活性自由基，快速分解大分子有机物，使BOD₅/COD从0.18提升到0.37。废水预处理后进入水解酸化-MBBR两级生化系统，确保系统的抗冲击性。实际进水COD、BOD₅、NH₃-N分别为6 112~6 320、1 090~1 180、35~38 mg/L，出水COD、BOD₅、NH₃-N分别为78~91、21~23、2~3 mg/L，出水指标稳定达到《污水综合排放标准》（GB 8978—1996）的直排要求。项目运行成本为4.27元/m³，稳定性强，处理效果好，可为“双碳”经济相关产业发展背景的同类型废水处理提供借鉴。

关键词: 植物提取液, 铁碳微电解, Fenton氧化, 移动床生物膜反应器

Abstract:

The important role of bamboo in the carbon neutrality process has promoted the rapid development of its deep processing industries. Aiming at fresh bamboo extracting wastewater with complex organic pollutants,high chemical oxygen demand,and low biodegradability,a combined process of iron-carbon micro-electrolysis,Fenton oxidation,and a two-stage hydrolytic acidification-moving-bed biofilm reactor (MBBR) treatment was designed. The operational results showed that the Fe²⁺ generated from iron-carbon micro-electrolysis could catalyze the Fenton system to produce reactive free radicals,which rapidly decomposed macromolecular organic matter,resulting in the increase of the BOD₅/COD ratio from 0.18 to 0.37. After pre-treatment,the wastewater entered the hydrolytic acidification-MBBR two-stage biochemical system to ensure the shock resistance of the system. The influent COD,BOD₅,and NH₃-N concentrations were 6 112-6 320 mg/L,1 090-1 180 mg/L,and 35-38 mg/L,respectively,while the effluent concentrations were 78-91 mg/L for COD,21-23 mg/L for BOD₅,and 2-3 mg/L for NH₃-N,meeting the direct discharge standards specified in Integrated Wastewater Discharge Standard(GB 8978—1996). The operating cost was 4.27 yuan/m³. This process demonstrated strong stability and excellent treatment performance,offering a reference for wastewater treatment in similar industries under the dual carbon economy background.

Key words: plant extract solution, iron-carbon micro-electrolysis, Fenton oxidation, moving bed biofilm reactor

中图分类号: 

• X703.1