Patent ID: 8936725
Filing Date: 2015-01-20
Classification: C02F,Y02W

Abstract:
1. Constructed wetland wastewater treatment equipment under a low temperature for continuous operation, comprising: three-section substrates vertically filled and parallel to each other in a constructed wetland, ventilation pipes being arranged in the substrates; a height of a bed of the constructed wetland being higher than a height of the substrates; a double wall used as a barrier at a periphery of the constructed wetland, an organic substance being filled inside the double wall to perform a ferment heat generation, a top of the double wall being sealed; a gas transfer pipe disposed at the top of the double wall when the top is sealed by an ice layer, the gas transfer pipe being connected to a water head tank of which a water pipe is connected to the constructed wetland; a water distributing pipe disposed at a top of the three-section substrates and a water collecting pipe disposed at a bottom of the three-section substrates, a water outlet of the water collecting pipe being higher than the height of the bed of the constructed wetland; and a water inlet pipe connected to an upper portion at one end of the three-section substrates and a water outlet pipe connected to a lower portion at the other end of the three-section substrates, a water outlet of the water outlet pipe being higher than the height of the bed of the constructed wetland; the water distributing pipe and the water inlet pipe being respectively connected to the water head tank; wherein the water inlet pipe and the water outlet pipe are closed when water enters the water distributing pipe, the water is discharged through the water outlet of the water collecting pipe, and the water is adjusted to be discharged through a middle water outlet after a heat preservation layer composed of the ice layer and an air layer is formed on the constructed wetland; wherein the water distributing pipe and the water collecting pipe at the bottom are closed when the water enters the water inlet pipe, the water is discharged through the water outlet of the water outlet pipe, and the water is adjusted to be discharged through the middle water outlet after the heat preservation layer composed of the ice layer and the air layer is formed; and the adjustment of the pipes for distributing the water is capable of making a mutual transform between a horizontal flow wetland and a vertical flow wetland.