[1]刘强.前置缺氧池+CAST+磁混凝工艺用于紧凑型污水厂提标改造[J].中国给水排水,2021,37(24):69-73.
　LIU Qiang.Application of Pre-anoxic Tank/CAST/Magnetic Coagulation Process in Upgrading of a Compact Wastewater Treatment Plant[J].China Water & Wastewater,2021,37(24):69-73.
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前置缺氧池+CAST+磁混凝工艺用于紧凑型污水厂提标改造

中国给水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第37卷 期数: 2021年第24期 页码: 69-73 栏目: 出版日期: 2021-12-17
Title:
Application of Pre-anoxic Tank/CAST/Magnetic Coagulation Process in Upgrading of a Compact Wastewater Treatment Plant
作者:
刘强
(大连市市政设计研究院有限责任公司，辽宁大连116011)
Author(s):
LIU Qiang
(Dalian Municipal Design & Research Institute Co. Ltd.， Dalian 116011， China)
关键词:
CAST; 前置缺氧池; 磁混凝沉淀池
Keywords:
CAST; preanoxic tank; magnetic coagulation sedimentation tank
摘要:
大连某污水处理厂提标改造工程设计规模为9×104 m3/d，排放标准由《城镇污水处理厂污染物排放标准》（GB 18918—2002）一级B标准提标至一级A标准。原生化处理工艺为CAST，针对运行中存在的CAST池容不足、无深度处理系统、原水碳氮比不足、缺少碳源投加系统等问题，改造工程采用前置缺氧池+CAST+磁混凝沉淀工艺。因无空地可用，对原有多座建（构）筑物进行了拆除、改建或复建，设计了多座不规则形状处理构筑物，对新建构筑物进行了合建、叠放设计。改造后前置缺氧池和磁混凝沉淀池运行良好，出水水质稳定达到并优于一级A标准。
Abstract:
The design scale of a wastewater treatment plant upgrading and reconstruction project in Dalian is 9×104 m3/d, and the discharge standard was upgraded from first class B criteria to A criteria specified in Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant (GB 18918-2002). The original biochemical treatment process was CAST, which had the problems of insufficient CAST tank volume, no advanced treatment system, insufficient carbon/nitrogen ratio of the influent and lack of carbon source adding system, etc. To solve these problems, the process of pre-anoxic tank, CAST and magnetic coagulation sedimentation was selected in the upgrading and reconstruction project. As there was no space available, many original buildings (structures) were demolished, transformed or rebuilt, some irregular treatment structures were designed, and new structures were built together and stacked. After reconstruction, the operation of the pre-anoxic tank and magnetic coagulation sedimentation tank is good, and effluent quality is stable and better than first class A discharge standard.
更新日期/Last Update: 2021-12-17