BioDopp工艺在CASS工艺升级改造中的应用

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英文篇名：Application of BioDopp craft in CASS process upgrading and reconstruction 作者：卢殷达 ; 彭秀菊 ; 何勇 ; 张雷 ; 陶晶 ; 赵嫱 英文作者：LU Yin-da;PENG Xiu-ju;HE Yong;ZHANG Lei;TAO Jing;ZHAO Qiang;Southwest Municipal Engineering Design and Research Institute of China;Longchang Waterworks Company;Beijing BHT Environment Technology Co., Ltd.; 关键词：BioDopp ; 一体化结构 ; CASS ; 城镇污水 ; 升级改造 英文关键词：BioDopp;;integration structure;;CASS;;town sewage;;upgrading and reconstruction 中文刊名：工业用水与废水 英文刊名：Industrial Water & Wastewater 机构：中国市政工程西南设计研究总院有限公司;隆昌市自来水公司;北京博汇特环保科技股份有限公司; 出版日期：2019-06-28 出版单位：工业用水与废水 年：2019 期：03 语种：中文; 页：67-70 页数：4 CN：34-1204/TQ ISSN：1009-2455 分类号：X703

摘要

针对目前以CASS工艺为代表的污水处理厂受限于占地面积,难以实现就地提标改造的问题,西部某县城污水处理厂采用BioDopp工艺对其进行了升级改造,将已建CASS池增加内部隔墙,进行功能区划分,利用空气提推,实现硝化液的回流及池内循环,在不单独设置泥水分离区的情况下实现了固液分离,同时实现了厌氧区、缺氧区、曝气区、泥水分离区各处理单元的有机结合。实践表明,在设计进水条件下,改造后的生化池出水CODCr、 NH3-N、 TN的平均质量浓度分别为33.30、 1.26、 9.75 mg/L,同时出水TP及SS也达到了GB 18918—2002《城镇污水处理厂污染物排放标准》中的一级A标准。
        In view of the problem that sewage treatment plant represented by CASS process is limited by floor space and is hard to realize on-site upgrading and reconstruction, a sewage treatment plant in a county town in western China adopted BioDopp craft to upgrade and reconstruct the original process, through adding internal partitions, dividing functional districts, utilizing air lifting and pushing, nitrifying liquid reflux and tank internal recycle were achieved. Moreover, solid-liquid separation was realized through a special treatment structure design without an individual mud-water separation zone; besides, organic combination of each processing units of anaerobic zone, anoxic zone, aeration zone and mud-water separation zone was also realized. The practical results showed that, under the design influent water condition, the average mass concentrations of CODCr, NH3-N and TN in the effluent water from the reconstructed biological tank were 33.30, 1.26 and 9.75 mg/L respectively, moreover, the effluent TP and SS concentrations also met the requirement of grade 1 level A of GB 18918—2002 Discharge Standard of Pollutants for municipal Wastewater Treatment.

引文

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