Method for treating wastewater in artificial wetland and wastewater treating device for implementing method

Abstract

The invention discloses a method for treating wastewater in an artificial wetland and a wastewater treating device for implementing the method, wherein the method for treating the wastewater comprises the following steps: firstly, taking advantage of plant roots to absorb N, C and P from the wastewater so that part of N, COD, BOD and P can be removed; then utilizing nitrobacterium, aerobes and polyphosphate accumulationg bacteria to remove ammonia, organisms and phosphorus from the wastewater; then, utilizing acidified hydrolytic bacteria and anoxic bacteria to remove macromolecular organisms; and finally utilizing methane bacteria and anaerobes to remove organic acid and micromolecular organisms. In addition, the wastewater treating device comprises an artificial pond. The bottom of the artificial pond is provided with a bearing layer. An active carbon filter layer for filtering and purifying water is arranged above the bearing layer. A bacteria layer for eliminating and decomposing various pollutants in the wastewater is arranged above the active carbon filter layer. A layer of wetland filler is arranged between the active carbon filter layer and the bacteria layer. In the artificial pond, the bottom of the bearing layer is provided with a water draining pipe.

Description

【Technical field】

[0001] The invention relates to a method for treating sewage in a multi-layer pre-embedded microbial vertical flow artificial wetland and a sewage treatment device for realizing the method. 【Background technique】

[0002] Among the existing vertical flow constructed wetland sewage treatment devices and sewage treatment methods. When the sewage flows vertically from top to bottom or bottom to top, the natural microorganisms enter the water body and use the nutrients in the water to inhabit and grow on the plant roots or fillers in the wetland. After a long period of natural screening, the microorganisms growing in the wetland have formed special strains for obligate treatment of sewage. The bacteria form an ecosystem together with the plants in the wetland to purify the water.

[0003] But this method has the following disadvantages:

[0004] First, the elimination and screening process of microorganisms is long, and the commissioning cycle of sewage trea...

Images