Compound vertical tidal flow constructed wetland method and device

Abstract

The invention discloses a compound vertical tidal flow constructed wetland method and device. The method comprises the following steps: A, respectively connecting an electromagnetic valve into a water inlet pipe and a draining pipe; B, starting certain water pressure through the electromagnetic valve; C, filtering gravel impurities in water through a pipeline filter; D, connecting a pipeline booster pump with a time switch, connecting a leakage protector and an air switch and merging into a power grid; E, enabling the booster pump to be standby under the control of a water pressure adjuster; F, for the draining pipe, obtaining work time according to average water outlet flow and wetland water body volume; G, converting dry and wet states of the compound vertical tidal flow constructed wetland to achieve automatic operation; H, under condition of adjusting dry and wet states of the wetland, reducing methane greenhouse gas emission. The device comprises the electromagnetic valve, the pipeline booster pump, the filter, a water collecting pipe, a water distributing pipe, a water inlet pipe, an air switch breaker, an electromagnetic valve controller and the compound vertical flow construction wetland. The method disclosed by the invention is easy and practical, and the device has a simple structure and convenience in use and can operate the constructed wetland automatically.

Description

technical field [0001] The invention relates to the field of water environment treatment, and more specifically relates to a method for a composite vertical tidal flow artificial wetland, and also relates to an automatic operation device for a composite vertical tidal flow artificial wetland, which is suitable for treating sewage with high pollution load. This technical method ensures the efficient degradation of pollutants and at the same time, by controlling the dry and wet state of the constructed wetland, the level of reoxygenation is improved, the possibility of clogging is reduced, and the service life of the wetland is extended; and it brings more ecological benefits and provides a place for the public to rest. Background technique [0002] As a new type of sewage treatment process, constructed wetland mainly degrades the input pollutants through the triple synergy of biology, physics and chemistry. With the increase of the operation period, due to the increase of par...

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Problems solved by technology

Although the columnar simulation system can regularly control the water intake and drainage through the peristaltic pump, the water treatment volume is small (500ml / day-800ml / day), which is only suitable for laboratory mechanism research; gravity flow can realize the wetland emptying function, but it can only be used In multi-level wetlands, the time difference between water inflows needs to be controlled artificially to ensure that the wetlands have been emptied between two water inflows. This method is not easy to control the time and is limited by the terrain. Many places are difficult to have the conditions to build multi-level water drops. wetlands

Although the operation of the siphon to empty the wetland is simple, it also requires human control. At the same time, it is limited by the water pressure formed by the height difference, and the wetland cannot be completely emptied, and this method is driven by non-power. If the time is too long, it is not conducive to the rapid emptying and reoxygenation of the project for the next water intake

For the submersible pump to empty the wetland, this is the most used method, but it needs to bury the submersible pump at the bottom of the wetland, run it when it needs to be emptied, and stand by at other times. If the submersible pump is damaged, it can only be replaced by destructive excavation of the wetland. It is not conducive to the long-term stable operation of constructed wetlands

If the submersible pump is installed outside the wetland, an additional water distribution well needs to be built and connected to the wetland to meet the requirement that the submersible pump work under the liquid surface. Due to the requirement of the safe working water level of the submersible pump, this method cannot completely empty the wetland, and rich The oxygen effect is poor; if other types of drainage pumps are connected to the outside of the constructed wetland, they will not be able to store water. No matter whether it is running or not, the water in the constructed wetland will flow through it.

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