1. Communication and coordination with affiliated units before installation:
-Contact engineering design units, construction and other equipment installation parties to communicate the construction sequence, installation technical parameters, requirements and precautions, ensuring installation accuracy and timeliness.
-Communicate with the civil engineering team to provide guidance on the dimensions of the biological aerated filter tank, the size and accuracy of the filter beam, the size and position of the ventilation tank, the position and size of the embedded bolts, the anti-corrosion situation of the filter wall, and the cleanliness of the water distribution room, and coordinate the construction sequence and time sequence.
-Confirm with Party A whether the construction site roads are unobstructed, whether the water and electricity on the construction site are complete and convenient, and whether there is a site for stacking construction materials, and agree on the entry time and construction time.
-Communicate with the pipeline installation party about the size, location, technical parameter requirements, and installation sequence of the pipeline reserved interface to ensure that the aeration system and backwash system pipelines are installed in place.
2. Preparation and precautions before installation:
-Organize construction personnel to study drawings, conduct comprehensive review, verify drawing dimensions, and conduct technical disclosure, so that construction personnel are familiar with the construction object, construction plan, technical measures, construction procedures, key points of methods, coordination between various types of work, construction schedule requirements, safety technology, and quality standards.
-Develop construction schedule and construction plan.
3. Key points for installation and acceptance of each component:
-Backwash gas distribution pipe installation: inspect the quality and specifications of pipes, fittings, valves, etc. before construction; The construction process includes pipeline support installation, pipeline connection, valve installation, etc; Construction quality control points include the levelness, verticality, and connection sealing of pipelines; Construction acceptance includes pressure testing and water testing of pipelines.
-Installation of stable flow grid for effluent: inspect the quality and specifications of the stable flow grid before construction; The construction process includes the positioning, installation, and fixation of the stabilizing grid; The construction quality control points include the levelness, verticality, and fixation firmness of the stabilizer bar; Construction acceptance includes observing the stability of water flow, etc.
-Installation of filter plate: Before installation, inspect the filter beam and filter plate quality of the filter tank, including the straightness, flatness, and parallelism of the filter beam, as well as the size and flatness of the filter plate; The construction process includes the lifting, installation, and adjustment of the filter plate; The construction quality control points include the levelness of the filter plate, the uniformity of spacing, and the sealing of the connection with the filter beam; Construction acceptance includes measuring the levelness of the filter plate with a level.
-Installation of long handled filter head: Check the quality and specifications of the filter head before installation; The construction process includes the installation and fixation of the filter head, etc; The construction quality control points include the verticality of the filter head installation, the sealing of the connection with the filter plate, etc; Construction acceptance includes observing the uniformity of water and air distribution of the filter head.
-Installation of the distributor: Before construction, inspect whether the flange of the pre embedded pipeline connected to the distributor is in place, and whether the pipeline at the front end of the aeration pipeline is clean; The construction process includes the lifting, installation, and connection of the distributor; The construction quality control points include the levelness of the distributor, the sealing of the connection with the pipeline, etc; Construction acceptance includes observing the uniformity of aeration of the distributor.
-Installation of aerators and angle steel brackets: Before construction, inspect the quality and specifications of aerators and angle steel brackets; The construction process includes the installation of angle steel brackets, installation of aerators, etc; Construction quality control points include the levelness and verticality of angle steel supports, as well as the installation firmness of aerators; Construction acceptance includes observing the uniformity of aeration in the aerator.
4. Overall debugging and trial operation: After the installation and acceptance of each component are qualified, the overall debugging and trial operation of the biological aerated filter shall be carried out. The debugging content includes adjusting the air volume and pressure of the aeration system, adjusting the flushing intensity and flushing time of the backwash system, etc. During the trial operation, observe the operation of the filter tank, including the water quality treatment effect, the stability of the filter material, and the operation status of the equipment.
5. Acceptance documents and materials: During the installation acceptance process, relevant acceptance documents and materials should be formed, including installation acceptance reports, construction drawings, equipment lists, quality inspection reports, commissioning records, etc. These documents and materials will serve as important basis for the completion acceptance of the project.
The installation and acceptance of BAF is an important step in ensuring the normal operation and treatment effectiveness of the biological aerated filter. During the acceptance process, strict inspection and testing should be carried out in accordance with relevant standards and specifications to ensure that all technical indicators meet the requirements. At the same time, any problems discovered should be rectified in a timely manner until they pass the acceptance inspection. The specific technical requirements and standards for acceptance may vary depending on the specific circumstances of the project, and should be carried out in accordance with relevant design documents and specifications in practical operation.
