Artificial wetlands system suitable for low-temperature operation and operating method thereof

Abstract

The invention discloses an artificial wetlands system suitable for low-temperature operation and an operating method thereof and belongs to the field of artificial wetland treatment. The system disclosed by the invention comprises a sewage treatment system which is suitable for low-temperature regions and consists of an adjusting pool, an anoxic horizontal sub-surface artificial wetland, an anaerobic horizontal sub-surface artificial wetland, an aerobiotic vertical sub-surface artificial wetland, a novel thermal insulation material, a phosphorus absorption pond, a water pump, a water collecting pond comprising a self-sucking siphon and a water distributing pipeline. Treated sewage enters into the adjusting pool through a water inlet, the sewage treated enters into the anoxic horizontal sub-surface artificial wetland and then sequentially enters into the anaerobic horizontal sub-surface artificial wetland and the aerobiotic vertical sub-surface artificial wetland, and the effluent reaches the standard and is discharged. The system disclosed by the invention can be used for not only effectively recovering part of resources to lower the operating cost, but also improving the treatment efficiency by virtue of an efficient nitrogen and phosphorus removal process and by way of additionally arranging the thermal insulation material and the phosphorus absorption pond. The system further can efficiently and stably operate in winter under a cold climate condition and a novel sewage treatment technology is provided for the low-temperature regions in winter.

Description

technical field [0001] The invention belongs to the field of artificial wetland treatment, in particular, relates to an artificial wetland system suitable for low-temperature operation and its operation method, more specifically, relates to a new type of special thermal insulation material which is used as a thermal insulation layer for low-temperature operation Constructed wetland and advanced sewage treatment process, and optimize the configuration of the constructed wetland system unit, suitable for use in areas with cold winter climate and long freezing period, and the purification effect is good. Background technique [0002] Constructed wetland sewage treatment technology is a kind of sewage ecological treatment technology that emerged in the 1970s. It has the advantages of low investment, low operating cost, convenient management, and no secondary pollution. It has been successfully used in domestic sewage and rural point sources in recent years. and non-point source ...

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Problems solved by technology

[0007] In view of the key common problem of poor nitrogen and phosphorus removal in winter in most of the decentralized sewage treatment technologies such as unpowered anaerobic biological treatment, land infiltration, and constructed wetlands in the existing technology, and the insufficient sewage treatment technology under low temperature conditions, we provide A constructed wetland system suitable for low-temperature operation and its operation method, comprising a regulating pool, anoxic horizontal subsurface flow constructed wetland, anaerobic horizontal subsurface flow constructed wetland, aerobic vertical flow constructed wetland, new heat insulation materials, phosphorus adsorption pond, The sewage treatment system composed of water pump, sump with self-priming siphon and water distribution pipeline is suitable for low temperature areas. It has the characteristics of high treatment efficiency under low temperature conditions, low operating costs, simple management and landscape.

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