According to the sewage characteristics, environmental requirements, management level and economic accounting, air blast aeration, mechanical surface aeration, jet aeration, etc. can be selected in the engineering design. It is generally recommended to use air blast aeration. When selecting air blast aeration system, the aerator must meet the following requirements:

1、在特定的曝气条件下，既能满足曝气池污水的氧气要求，又能达到混合搅拌，池内无沉淀的要求。

1. Under specific aeration conditions, it can not only meet the oxygen requirements of the sewage in the aeration tank, but also meet the requirements of mixing and mixing without sedimentation in the tank.

2、曝气器不仅要有较高的充氧性能，还要有较强的混合搅拌能力。另外，还要有不易堵塞、耐腐蚀、坚固、空气均匀、操作管理和维护容易、成本低、阻力小、寿命长的性能。

2. The aerator should not only have high oxygenation performance, but also have strong mixing and stirring capacity. In addition, it should have the performance of not easy to block, corrosion resistance, firmness, uniform air, easy operation, management and maintenance, low cost, small resistance and long service life.

3、微孔曝气器组成的微孔曝气系统整体上应具有、简单配置、安装及维修管理方便、故障诊断容易的优点。

3. The microporous aeration system composed of microporous aerators should have the advantages of energy saving, simple configuration, convenient installation and maintenance management, and easy fault diagnosis.

4、鼓风膜片曝气器分为微孔曝气器和大气泡曝气器，大中型城市污水处理，曝气器应使用微孔曝气器，接触曝气器氧化法应使用微孔泡曝气器。

4. The air-blast diaphragm aerator is divided into microporous aerator and large bubble aerator. For large and medium-sized urban sewage treatment, microporous aerator shall be used for aerator, and microporous bubble aerator shall be used for contact aerator oxidation method.

5、工程中选择的曝气器在服务面积、风量、曝气水深不同时，应具有标准状态下的氧气性能曲线和底部流速曲线。

5. The aerator selected in the project shall have oxygen performance curve and bottom flow rate curve under standard conditions when the service area, air volume and aeration depth are different.

6、鼓风曝气器可以满池放置或放置在池的一侧。推流式曝气池的曝气器应延池长方向减少布置。

6. The blast aerator can be placed full of the tank or on one side of the tank. The aerators of the push-flow aeration tank shall be arranged in a reduced way along the length of the tank.

在污水处理中可以选择很多工具设备，但大部分设备无法达到抱负的运用意图。污水处理职业中一般污水量很大，一般设备在功能及效率方面有问题，因此选用技术可以确保可靠的设备完成处理工作，这时曝气器是个不错的选择。目前曝气设备也在其他污水处理职业中大量使用。用户使用曝气设备时操作方法非常简单，设备也不会占用太多空间。重要的是，曝气设备选择的制造技术也更加坚固。，曝气器的质感很轻，这种设备用铸铁和混凝土管加工，所以设备不会增加工作负担，施工方法快，不会消耗很多力量，可以降低运用本钱，曝气设备和现有设备产品相比可以降低约30%的成本，因此，曝气器设备受到用户的欢迎。第二，曝气器也有很好的耐蚀效果。设备经过腐蚀处理，有腐蚀性物质时不会发生化学反应，因此使用曝气设备更稳定，可以为用户提供更方便的条件，不必担心物质与物质接触后会出现化学反应，可以放心使用。

Many tools and equipment can be selected in sewage treatment, but most of the equipment can not achieve the desired application intention. In the sewage treatment profession, there is usually a large amount of sewage, and there are problems in the function and efficiency of the general equipment. Therefore, the selection of technology can ensure that the reliable equipment can complete the treatment work. At this time, the aerator is a good choice. At present, aeration equipment is also widely used in other sewage treatment occupations. When users use aeration equipment, the operation method is very simple, and the equipment will not occupy too much space. Importantly, the manufacturing technology of aeration equipment selection is also more robust. First, the quality of aerators is very light. This kind of equipment is processed with cast iron and concrete pipes, so the equipment will not increase the workload, the construction method is fast, and it will not consume a lot of power, and it can reduce the cost of use. Compared with the existing equipment products, the cost of aerators can be reduced by about 30%. Therefore, aerators are popular with users. Second, the aerator also has good corrosion resistance. After corrosion treatment, the equipment will not react with corrosive substances. Therefore, the use of aeration equipment is more stable and can provide users with more convenient conditions. It is not necessary to worry about the chemical reaction after contact with substances, and can be used safely.

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