Artificial wetland sewage pretreatment apparatus

Abstract

The invention relates to an artificial wetland sewage pretreatment apparatus. The apparatus comprises a water inlet river channel formed by a splayed baffle wall, and an artificial wetland sewage pretreatment device connected with the water inlet river channel; the water inlet river channel is provided with a baffle wall device; the baffle wall device is formed by a baffle dam and a screen; the baffle dam is fixedly connected to the bottom of the water inlet river channel; and the screen is fixedly connected with the top of the baffle dam. The artificial wetland sewage pretreatment apparatus has the following beneficial effects: the height of the dam body is determined according to the lowest water level of the river channel in the dry season, so the flow at the upper portion of the dam body is not influenced, the inlet water flow of a wetland is guaranteed, and low-speed sedimentary sand can be blocked from entering the wetland pretreatment part; and large river floaters intercepted by the screen are the main reason causing inlet water grating equipment overload and inlet water pump maintenance, so steel gratings having a 0.08m spacing are an important measure for solving the hidden equipment troubles, and each of the gratings is fixed through the welding to the embedded part on a stable column once casted with the baseboard of the dam, and has a safe structure.

Description

technical field [0001] The invention belongs to sewage treatment technology, in particular to a sewage pretreatment device for artificial wetlands. Background technique [0002] Constructed wetland is a new sewage ecological treatment technology developed in the 1970s and 1980s. According to the different flow modes of sewage in the wetland, the sewage treatment process of constructed wetland can be divided into three types: surface flow constructed wetland, subsurface flow constructed wetland and vertical flow constructed wetland, among which subsurface flow constructed wetland is the most widely used. The purification principle of constructed wetland is to treat sewage through the synergy of physics, chemistry and biology in the wetland ecosystem. It has the characteristics of low operating cost, simple maintenance and management, small impact on the surrounding environment, and can be decentralized and miniaturized. . At present, constructed wetlands have shown great ad...

AI Technical Summary

Problems solved by technology

During the use, it was found that the existing problems were: due to the large number of floating objects in the river, the load on the grille in front of the pump was often too high and needed to be cleaned manually. At the same time, some small debris would be mixed into the pump well, which would seriously cause damage to the pump equipment. The flow drives a large amount of quicksand into the aeration grit chamber, causing the SS index of the effluent to be too high

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