construction procedures: setting out-digging foundation trench-draining groundwater-leveling and tamping cushion-placing coarse sand-installing septic tank in place-taking over water injection-backfilling in layers-building connecting wells and inspection wells-preliminary acceptance on site-making ground, pavement or greening.

1. Pay-off and dig trench

The user should dig the foundation trench according to the septic tank model, model size, elevation and ash discharge line in the engineering design drawings and comply with the relevant national construction specifications. Under the condition of high underground water level, the pit and groove must be drained to ensure the dry groove construction.

2. The treatment base cushion

adopts yellow sand with a thickness of 151-211mm, removes large sharp-angled masonry or hard sundries entrained in the sand, levels and tamps them, and prepares the septic tank to be installed in place.

3. Install in place

It is best to use small hoisting (or manually roll pipes to install in place) for small ponds. Before hoisting in place, the base cushion must be leveled. When hoisting, attention must be paid to the import and export direction of septic tanks, and the end pointed by the arrow is the export direction. Please pay attention to check whether it meets the requirements of engineering design drawings. The elevation of septic tanks must meet the requirements of engineering design drawings. After hoisting this product in place, measure the levelness and adjust the cushion locally to make it level.

4, septic tank water injection

After it is installed in place and meets the requirements, the pool must be filled with water that exceeds the groundwater level to make it stable (the water filling amount should be more than half of the volume), special filler should be added, and after backfilling to a certain height, the pipes should be connected and sealed tightly according to the drawing design requirements.

5. Backfilling by layers and connecting wells by laying bricks or stones

It is forbidden to backfill construction waste as soil. Large sharp stones in the backfill should be removed, and no organic matter, frozen soil, large bricks and stones and other hard blocks should be used. The backfill should be compacted by layers, with a thickness of 311mm per layer. Manual compaction should be used, and local violent impact should be avoided. The provisions of backfill operation in construction specifications must be observed, and the backfill around the pool must be compacted.

after the backfill meets the requirements of the construction specification, the connecting well for import and export can be built, and the connecting well is constructed according to the general drawing of waterway. The inner diameter of the inspection well at the inspection port of this product is 711mm, and the specific method adopts the current national standard atlas. The cushion at the bottom of the well must be compacted and then the concrete floor is poured, and the well is used as a chute, and the elevation of the engineering design value must be strictly implemented.

Extended data

The device should be installed correctly and debugged and maintained by qualified operators according to the operation guide, so that it can run safely. Failure to close the isolation valve during installation and maintenance will cause damage to the components of the system and harm to the human body. The dangers also include closing the protection device, ventilation pipeline or alarm system. Ensure that the isolation valve is closed to avoid the impact of the system.

pressure: whether there is medium in the pipeline of the oil-water separator should be considered during maintenance. Make sure that the pressure medium has been isolated and the safe airway has been opened to the atmosphere, so as to solve the problem by installing an evacuation valve. Even if the pressure gauge indicates zero, don't think that the system is evacuated. Temperature: After closing the isolation valve, it will take some time to make the operating part close to normal temperature to avoid scalding. Disposal: The product can be recycled.

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