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SBR污水处理工艺详解
发布时间：
2024-04-26 08:17
SBR是序批式活性污泥法的简称，又称间歇式活性污泥法，是一种间歇曝气方式来运行的活性污泥工艺。
相较于其他工艺不同只需在一个池体内按照时间顺序变成不同的反应阶段。
工作过程分为进水阶段、反应阶段、沉淀阶段、闭水阶段、待机阶段。
第一步：从进水开始达到设备最大容积结束。
第二步：反应时可根据不同微生物的生长特点、污水的性质和要达到处理效果，采用非限制曝气、半限制曝气、和限制曝气方式运行，通过控制反应室中污水的溶解氧达到厌氧、缺氧、好氧反应环境，完成多种处理功能，不仅可以达到去除有机物的目的，而且可以取得脱氮和除磷的效果。
第三步：沉淀阶段，目的是进行固液分离相当于二沉池沉淀时间通常设置为1—1.5小时，直至污泥絮体和上清液分离
第四布：闭水阶段是从反应器中使用滗水器将上清液排出，一直排放到最低水位。
到下次进水开始为待机阶段，可在该阶段进行多余污泥排放。
该设备具备占地面积小、构造简单、投资低、运行成本低、脱氮除磷效果高等优点。
SBR is the abbreviation of sequential batch activated sludge method, also known as intermittent activated sludge method, which is an activated sludge process operated by intermittent aeration method.
Compared with other processes, it only takes one pool to change to different reaction stages in chronological order.
The work process is divided into water inlet stage, reaction stage, precipitation stage, closed water stage and standby stage.
Step 1: From the beginning of water intake to the end of the maximum volume of the equipment.
Step 2: According to the growth characteristics of different microorganisms, the nature of the sewage and the treatment effect to achieve, it can be operated by non-restricted aeration, semi-limited aeration, and limited aeration. By controlling the dissolved oxygen of the sewage in the reaction chamber, it can achieve anaerobic, hypoxia and aerobic reaction environment, and complete a variety of treatment functions. In order to achieve the purpose of removing organic matter, and the effect of nitrogen removal and phosphorus removal can be achieved.
Step 3: The purpose of the sedimentation stage is to carry out solid-liquid separation, which is equivalent to the precipitation time of the second sedimentation tank, which is usually set to 1-1.5 hours until the sludge floc and the supernatant are separated.
Fourth cloth: The closed water stage is to discharge the supernatant by using a decanter in the reactor until the lowest water level.
The next water intake is in the standby stage, and excess sludge can be discharged at this stage.
The equipment has the advantages of small footprint, simple structure, low investment, low operating cost, and high nitrogen and phosphorus removal effect.
SBR污水处理工艺详解
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