Power-free integrated constructed wetland waste water treatment technology
A technology for artificial wetland and sewage treatment, applied in biological water/sewage treatment, water/sludge/sewage treatment, aerobic and anaerobic process treatment, etc., can solve the problem of increasing investment, no significant promotion of denitrification and denitrification, etc. To achieve the effect of beautifying the surrounding environment, free and convenient water level adjustment, and uniform water distribution
Inactive Publication Date: 2009-09-23
浙江省环境监测中心
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It increases the reoxygenation effect of the vertical underflow constructed wetland to a certain extent, but it requires an additional ...
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[0026] The technical solutions of the present invention will be further specifically described below through implementation examples and in conjunction with the accompanying drawings.
[0027] In this example, pretreatment is usually done in a three-format sedimentation tank, and the sludge will be cleaned periodically. For sewage with higher concentration, an anaerobic pool can be built at the front end of the filter bed. Good pre-sedimentation treatment is the guarantee for the long-term effective operation of the artificial ecological filter bed, and it can also play a role in regulating the amount and quality of sewage water. The pretreated sewage is lifted by the intermittent sewage pump and evenly distributed to the surface of the artificial substrate in the upper nitrification area of the vertical flow sewage ecological purification tank according to the set control parameters.
[0028]The main sewage treatment area of the present invention—the vertical flow sewage...
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The invention discloses a power-free integrated constructed wetland waste water treatment technology. The technology is characterized in that a vertical-flow waste water ecological purifying tank is divided into an upper region and a lower region; a waste water pre-treatment system is one or more pre-treatment processes of a grid, a three-grid type settling tank and an anaerobic tank, living waste water after the pre-treatment enters a water distribution system by being lifted by a water pump or relying on the natural liquid level height difference; the waste water after the pre-treatment is evenly distributed on a nitrification region of the vertical subsurface flow ecological purifying tank through a cross water distribution pipe network and is sequentially vertically penetrated in the nitrification region and an artificial matrix layer of a denitrification region; the water distribution system implements intermittent water distribution for the ecological purifying tank and is provided with a power-free gas distribution system at the bottom and in the upper nitrification region for realizing the continuous oxygen restoration of the nitrification region; outlet water of the upper nitrification region directly enters the lower denitrification region; a water collecting and water outlet system is arranged in the lower denitrification region, a water collecting port is arranged below the denitrification region, and a water outlet is arranged above the denitrification region, thereby leading the outlet water to maintain a certain water level in the denitrification region. The technology can realize the power-free natural oxygen restoration of the wetland, occupy small area and realize the nitrification-denitrification integrated high-efficient nitrogen removal.
Description
technical field [0001] The invention relates to the technical field of environmental protection, in particular to ecological engineering technology for sewage treatment. Background technique [0002] Constructed wetland sewage treatment technology is a new ecological engineering technology for sewage treatment that emerged in the 1970s. It has the advantages of low investment, low energy consumption, convenient management, and no secondary pollution. It is gradually being used in rural areas and small and medium-sized cities and towns. Sewage treatment field. [0003] Constructed wetlands are artificially constructed, controllable and engineered wetland systems, generally composed of pools, artificial filler substrates, water distribution systems, water collection systems and plants growing on artificial substrates, and are a unique substrate—plants - Microbial ecosystems. The basic principle of water quality purification in the constructed wetland ecosystem is: plant spec...
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Login to view more IPC IPC(8): C02F3/30C02F3/32
CPCY02A40/22Y02W10/10
Inventor 冯元群沈加思康颖蒋江吴斌邵卫伟
Owner 浙江省环境监测中心
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