Sewage treatment method based on blasting laminated artificial wetland
A sewage treatment method and a technology for constructed wetlands, which are applied in the fields of water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., which can solve the problem that the overlap cannot be effectively utilized and the total nitrogen removal effect of sewage is limited. , unsatisfactory sewage treatment effect, etc., to achieve good denitrification and phosphorus removal capacity, improve organic matter and ammonia nitrogen removal capacity, and improve the effect of effluent quality.
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Embodiment 1
[0040] Adopt the method of the present invention to process certain rural domestic sewage, the CODcr of this rural domestic sewage is 225mg / L, ammonia nitrogen (NH 3 -N) concentration is 23.5mg / L, total nitrogen (TN) concentration is 33.7mg / L, total phosphorus (TP) concentration is 2.0mg / L, the fine grid pretreatment unit adopts the ditch with fine grid, its The inclination angle of the fine grid is 45°, the gap is 20mm, the flow velocity of the sewage in the ditch is 0.5m / s, and the flow velocity through the fine grid is 0.7m / s. The buried anaerobic digester adopts a concrete structure. For a spherical pool, set a water outlet hole at a distance of 30cm from the top of the buried anaerobic digestion tank. The flow rate of the sewage passing through the water outlet hole is 0.5m / s. The lower packing support is set at the bottom 35cm, and the elastic three-dimensional packing is fixed and suspended between the upper and lower two packing supports. The filling rate of the packin...
Embodiment 2
[0044] Adopt the method of the present invention to process certain rural domestic sewage, this rural domestic sewage CODcr is 258mg / L, and ammonia nitrogen (NH 3 -N) concentration is 28.0mg / L, total nitrogen (TN) concentration is 37.5mg / L, total phosphorus (TP) concentration is 1.8mg / L, the fine grid pretreatment unit adopts the ditch with fine grid, its The inclination angle of the fine grid is 60°, the gap is 25mm, the flow velocity of the sewage in the ditch is 0.6m / s, and the flow velocity through the fine grid is 0.85m / s. The buried anaerobic digester adopts a concrete structure. For a spherical pool, a water outlet hole is set at a distance of 30cm from the top of the buried anaerobic digestion tank. The flow rate of the sewage passing through the water outlet hole is 0.6m / s. The lower packing support is set at the bottom 35cm, and the elastic three-dimensional packing is fixed and suspended between the upper and lower two packing supports. The filling rate of the packi...
Embodiment 3
[0048] Adopt the method of the present invention to handle certain rural domestic sewage, this rural domestic sewage CODcr is 315mg / L, and ammonia nitrogen (NH 3 -N) concentration is 20.8mg / L, total nitrogen (TN) concentration is 30.5mg / L, total phosphorus (TP) concentration is 1.5mg / L, the fine grid pretreatment unit adopts the ditch with fine grid, its The inclination angle of the fine grid is 60°, the gap is 16mm, the flow velocity of the sewage in the ditch is 0.7m / s, and the flow velocity through the fine grid is 0.9m / s. The buried anaerobic digester adopts a concrete structure For a spherical pool, set a water outlet hole at a distance of 30cm from the top of the buried anaerobic digestion tank. The flow rate of the sewage passing through the water outlet hole is 0.5m / s. Set the lower packing support at the bottom 35cm, and fix and hang the elastic three-dimensional packing between the upper and lower packing supports. The filling rate of the packing is 75%, and the resi...
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