Key points for the installation and construction of rainwater harvesting modules

The rainwater harvesting module is a new type of rainwater harvesting and reuse equipment. The rainwater harvesting module can effectively reduce the occurrence of urban flood disasters and make full use of water resources. The installation of rainwater harvesting systems is particularly important because sponge cities are everywhere. Let me introduce the installation method and construction points.

Installation method of rainwater harvesting module:

1. Dig trenches for sand and gravel cement

2. Floor reverse osmosis membrane

3. Assembly of component modules

4. Membrane reservoir cover membrane and protective plate backfill

Technical points of rainwater harvesting module construction:

1. Measurement and pay-off: according to the requirements of the design and construction drawings and the actual situation of the site, measure the excavation edge of the original ground, and release the excavation edge with lime.

2. Foundation pit drilling: using hydraulic backhoe layered leveling, grading drilling, grading according to the slope of 1: 0.5. The excavation thickness of each layer is less than 3 m, and the slope is supported and opened according to the design requirements. When the excavation reaches the design height of about 30 cm, the protective layer is fixed, and the slope is brushed after manual excavation, and straightened to ensure that the connection is smooth and beautiful.

3. Foundation treatment: With the manual cooperation of the machine, the foundation is leveled and compacted with a small vibrating roller, and then the corners are manually compacted with a small compression amount of cement soil treated with a 30cm 1:7 foundation, which will be placed.

4. Concrete pouring of floor slab: After the foundation treatment is completed, first make a 10 cm thick C15 concrete cushion, and then make a 20 cm thick C25 concrete floor slab. The base plate is made of two two-way pole towers, and finally a 2 cm thick layer of gravel is laid on the top of the tower.

5. Put the impermeable membrane at the bottom: After transporting the impermeable membrane to the site, roll it with the method of hot rolling. After installation, check the impermeable membrane. The composite impermeable membrane is a two-layer and one-membrane structure, and a single layer is laid on site.

6. Entering and leaving the water outlet: the layout finds the entrance to the water inlet and leaving the water inlet, and starts according to the drawing. Fix the installation position of the pipe entering and leaving the nozzle, and install the elbow into and out of the nozzle. Exit the entrance and exit of the pool.

7. Backwashing pipeline installation: According to the blueprint, install DE50 backwashing pipeline at the bottom of the liquid storage tank. The backwash pipe is connected by hot melt. When placing the first layer of plastic modules, the backwash pipe should be built at the same time. The ends of the backwash pipes are sealed with pipes, and the backwash branch pipes lead to the top of the pool and headquarters.

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