ABF process active biological filter experimental device

ABF's process process, a tower filter is set before the usual activated sludge process. It can be connected in series or connect with the aeration tank, but it is m--nly connected in series. There are many active sludge attached to the surface of the tower filter filter material, so the material of the filter material uses a polypropylene ball, ø40 ～ ø50, the porosity rate between the balls, the natural ventilation, and the biofilm when the biological membrane falls off at the age The filter bed is not easy to block. In the project, the tower is generally 4-6m high. The design load rate of the tower is 3.2kg/m3 ・ d, and the removal rate is about 65 %. The effect of treatment in winter is poor, which is related to water temperature. The outflow of the tower is as high as 6 to 8 mg/L (20 ° C), and the hypoxic fluid requires a high oxygen rate. As the concentration of wastewater is different, it can reach about 30 to 300mg/L ・ H.

The filter here uses a blanket (can also be exposed). The tower is a strong oxygen. Therefore, ABF can be regarded as a composite active sludge method.

The time of the sewage flow filter is less than 1min, but due to the existence of the pendant water of the filter material sludge layer, the staying time of the sewage is actually much longer.

Through the "ABF process" experiment, I hope to achieve the following purpose:

1. Master the basic operation process of the active biological filter "ABF process";

2. Deepen the principle of understanding the experiment;

3. Understand the process and technical parameters of the experiment, and improve the theoretical and practical knowledge of students.

2. M--n technical indicators and parameters:

1. Environmental temperature: 5 ℃ ～ 40 ℃

2. Treatment of water: 10 ～ 20L/h

3. Chi Shenchi: HRT 1 ～ 1.5h

4. Mixed pool: HRT 3 ～ 4H

5. Aeseum: HRT 6 ～ 8H

6. Second Shenchi: HRT 2H

7. Water inlet quality: CODCR 400 ~ 800mg/L out of water quality: CODCR 40 ～ 80mg/L

8. Water inlet quality: BOD5 200 ～ 400mg/l Disting water quality: BOD5 15 ～ 30mg/L

9. Water inlet suspension: SS 150 ～ 200mg/L.

10. PH value: 6.5 ～ 8.5

I. Overview

 

This device is designed for courses such as "Programming Controller Technology" and "Programmable Controller and Application" specially set up for all institutions in my country. , Programming software, industrial control configuration software, simulation teaching software, experimental hanging boxes (inverter control, touch screen control, servo control, etc.), and physical equal equalization. In this device, the basic instruction exercises of PLC can be performed intuitively, simulation experiments and physical experiments of multiple PLC practical applications, and all experiments have configuration rod maps to dynamically track them.

 

2. Features:

 

1. The device adopts a component structure to replace the experimental module convenient. If you need to expand the function or develop new experiments, you only need to add the experimental module hanging box, and never eliminate it.

 

2. The image of the experimental object is realistic, close to the actual application of the industrial site. Through the tr--ning of this device, students can quickly adapt to the work at the scene.

 

3. Adopt Mitsubishi FX3U-48MT programming controller. It has powerful functions and excellent performance. It adopts modular design and flexible combination. Users can form different control systems according to different needs.

 

4. Configuration stick map teaching, adopts MCGS industrial control configuration software, all experiments have edited the configuration rod map with intuitive, dynamic, and good teaching effects to conduct experimental tracking teaching.

 

5. The experimental items are complete, including digital quantity, analog quantity, frequency frequency speed adjustment, touch screen, network communication and electrical control.

 

6. PLC host's network teaching experiments: equipped with RS485 network communication (can also select CC-Link communication, price discussion), teacher-side computer (m--n station) conducts direct communication experiments (that is 1: N communication), any PLC host (m--n station) and PLC host (from the station) conduct direct communication experiments (that is, perform N: N communication).

 

3. Technical performance

 

1. Enter power supply: three -phase and four lines (~ 380V ± 10% 50Hz)

 

2. Working environment: temperature -10 ℃ ～+40 ℃ relative humidity <85%(25 ℃)

 

3. Device capacity: 300VA

 

4. Weight: 160kg

 

5. Dimensions: 160 × 75 × 150 cm3