The invention belongs to the technical field of wastewater treatment, in particular to a method for pretreating refractory waste water by catalyzing an iron internal electrolytic fluidized bed. The specific steps are as follows: the suspension of catalyzed iron internal electrolysis spherical carrier, into the fluidized bed body, the dosage of the effective volume of 10% fluidized bed body 60%; through the inlet into the wastewater to be treated, open and adjust the inlet pipe or pipe backflow valve; hydraulic fluidized bed as a hypoxia or hydrolysis device, back flow according to the need of water, the bed body cross-sectional area and determine the proportion of catalytic iron filler packing, pneumatic fluidized bed as the aerobic treatment device, the amount of compressed air to meet the wastewater dissolved oxygen device was 0.5 2.5mg / L under the premise, at the same time to meet the needs of the filling flow; supply water treatment: 6 1 - 20: 1; when the pneumatic fluidized bed as hydrolysis system is used, the dissolved oxygen concentration of less than 0.5mg / L; body filler, fluidized bed Under the influence of the draft tube, a cycle is formed, and the solid-liquid separation through the settling zone is discharged through a water outlet pipe. The sludge pipe is used for the discharge of excess sludge. The method has the advantages of simple structure and simple structure, and can be applied to the processing scale of different water quantity, and has strong operability.
【技术实现步骤摘要】
本专利技术属于废水处理
,具体涉及一种催化铁内电解流化床预处理难降解废水方法。
技术介绍
长期以来,含有有毒有害难降解污染物的废水是我国废水处理的重点和难点, 尤其是随着环保排放标准的提高,单一的生化技术难以满足现有的排放要求,因此如 何进一步提高废水处理效果,减少有毒有害污染物的排放量,成为当前亟待解决的现 实问题。根据这类废水的特点,目前大多采用物化和生化组合的处理方式,其中物化 通常作为预处理,其目的就是降低废水中污染物毒性,将难降解污染物转化为比较容 易降解的物质,提高废水的可生化性。当前研究和应用的预处理技术包括了混凝、吸 附、吹脱、高级氧化、还原等,这些技术各自有其优缺点,能去除或转化的污染物也 不相同。其中的催化铁内电解技术因其具有还原能力强、运行费用低、适用范围广、 铁离子可以增强生物活性等优点而得到重视,与生物可以实现很好的耦合。相应的 也开发了多种技术,如"催化铁还原与厌氧水解酸化协同处理工业废水的方法"(专 利申请号2008101960.0)、"曝气催化铁内电解污水强化一级处理方法"(专利申 请号200510028836.3)、"催化 ...
【技术保护点】
一种催化铁内电解流化床预处理难降解废水方法,其特征在于采用流化床装置处理难降解废水,所述装置由沉淀区(1)、导游内筒(2)、催化铁内电解载体(3)、进水管(4)、排泥管(5)、回流管(6)、压缩空气进口(7)、出水管(8)及流化床主体(9)组成,导流内筒(2)位于流化床主体(9)内,流化床主体(9)内充满催化铁内电解载体(3),流化床主体(9)内上方为沉淀区(1),流化床主体(9)底部设有进水管和排泥管(5),出水管(8)位于流化床主体(9)上方一侧;当流化床采有水力作为流化动力时,流化床主体(9)底部连接回流管(6)一端,回流管(6)另一端连接出水管;当流化床采用压缩空气 ...
【技术特征摘要】
【专利技术属性】
技术研发人员:刘志刚,胡坚,马鲁铭,吴德礼,赵冀平,王红武,魏保平,樊金红,陈恒宝,
申请(专利权)人:同济大学,镇江市水业总公司,
类型:发明
国别省市:31[]
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