Comprehensive training device for maintenance electricians

Comprehensive tr--ning device for m--ntenance electricians,ABF Craft Tr--ning Desk

I. Overview

The equipment is composed of the assessment platform of steel plate, mesh board equipment and power device. According to the needs of teaching and tr--ning, you can choose different components, devices and components to perform tr--ning of different curriculum modules and different projects. The components, devices and components that have been used are removed from the device, concentrated, and less damage and loss. Equipment is equipped with leakage protection, overload and circuit protection to ensure personal safety and equipment safety.

2. Equipment technical indicators

1. Standard: The overall size is 1200mm × 850mm × 1000mm (± 10mm);

2. Equipment materials: sheet metal, wooden cabinet structure;

3. Power:

1) Enter: Three -phase AC 380V ± 10% 50Hz three -phase and five lines;

2) Fixed communication and output: three -phase and five -line 380V plug -in group, 220V plug -in group, 220V socket 1 group, 380V socket type 1 group

4. Protection: The fuse is a short -circuit protection, the circuit breaker has overload protection, the leakage switch has leakage protection function, leakage protection action current ≤30mA, with power supply instructions.

3. Equipment structure function

The equipment consists of three parts: tr--ning screen (built -in power supply), tr--ning table (including keyboard), and lockers. The steel surface is sprayed with high temperature and plastic treatment, which is beautiful and effective and effective; the layout of the power box is the power protection device, power indicator device, and power output;

One embedded assessment platform that can be adjusted on the left side of the tr--ning table can be adjusted. All components are led by terminals. Student wiring only needs to be wirled on the terminal. The dual -use terminal is facilitated to connect with the component and tr--ning power screen. The right side is equipped with a mesh board, and the angle can be installed in embedded; the bottom of the experimental table is equipped with at least 4 guide wheels to facilitate equipment movement; storage storage; storage; The cabinet adopts standard structure and drawer type, which is used to store tools and tr--ning materials. The computer is installed above the power screen by adjustable computer brackets.

Comprehensive tr--ning device for m--ntenance electricians,ABF Craft Tr--ning Desk

1. Experimental principles and purposes:

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.