Device of multi-medium subsurface infiltration rural sewage disposal system and method thereof
A sewage treatment system and underground infiltration technology, applied in the direction of osmosis/dialysis water/sewage treatment, etc., to achieve the effect of increasing hydraulic load rate, enhancing chromatographic separation effect, and preventing easy clogging
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Embodiment 1
[0019] The device of the multi-media underground infiltration rural sewage treatment system of the present invention: excavate a trapezoidal pool body on the ground, dig a triangular slope surface at the bottom of the pool body, lay anti-seepage cloth on the bottom and around it, and set a water distribution pipe at the front end of the pool body. A water collecting pipe is arranged at the tail of the body.
[0020] The device is composed of air-permeable layer 1, capillary infiltration layer 2, water-permeable layer 3, multi-media ecological module layer 4, water distribution tank 5, water collection layer 6, anti-seepage layer 7 and polyurethane filter screen 8; air-permeable layer 1 is placed in capillary infiltration Above the layer 2; the water collection layer 6 is located on the top of the anti-seepage layer 7, and the multi-media ecological module layer 4 is connected to the water collection layer; the water distribution tank 5 is placed inside the water permeable layer...
Embodiment 2
[0022] The sewage is introduced into the water distribution tank 5 through the water distribution pipe. Under the action of the capillary, the sewage in the water distribution tank 5 is filtered by the polyurethane filter 8 and then lifted to the capillary infiltration layer 2 and the air-permeable layer 1 in turn. The pollutants are initially separated under the action of the chromatographic effect. After the water rises to a certain height, gravity makes it fall again, and enters the multi-media module layer 4 through the water-permeable layer 3 to be deeply purified. The purified water is collected by the water-collecting layer 6 and discharged or resource utilization.
[0023] The device height of the multi-media underground infiltration rural sewage treatment system is 1.7m, the air-permeable layer is 30cm, the capillary infiltration layer is 30cm, the water-permeable layer is 20cm, the multi-media module layer is 60cm, and the water collection layer is 30cm. The particle ...
Embodiment 3
[0025] The method is the same as in Example 2; the device of the multi-media underground infiltration rural sewage treatment system is 1.7m high, the air-permeable layer is 30cm, the capillary infiltration layer is 30cm, the water-permeable layer is 20cm, the multi-media module layer is 60cm, and the water collection layer is 30cm. The particle size of the multi-media functional filter material is 8mm, and a total of 6 layers are filled. The volume ratio of the permeable material gravel: modified zeolite: ash is 80:10:10, and a total of 5 layers are filled. Under hydraulic load 15cm / m 2 In case d, influent COD 200mg / L, NH 3 -N 20mg / L, TN 30mg / L, TP 5mg / L, effluent COD 28mg / L, NH 3 -N 1.8mg / L, TN 4.3mg / L, TP 0.22mg / L, the removal rate is 86% of COD, NH 3 -N 91%, TN 86%, TP 96%.
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