A hydraulic tidal flow variable displacement artificial wetland and a process for using the artificial wetland to treat sewage
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A technology of artificial wetland and tidal flow, applied in biological water/sewage treatment, water/sludge/sewage treatment, sustainable biological treatment, etc., to achieve the effect of enhanced treatment efficiency and weakened treatment efficiency
Active Publication Date: 2016-03-09
浙江甲基源生命科技有限公司 +1
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In addition to the basic advantages of wetlands, the artificial wetland of the present invention also has three characteristics. One is that it has a strong natural reoxygenation ability. Under the premise of not increasing energy consumption, the aerobic operation mode improves the treatment efficiency per unit volume and reduces the occupied area. The second is to create a variable dynamic wetland habitat to improve the denitrification and denitrification capacity, and the third is to design a special structure and operation mode to solve the problem of blockage
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Embodiment 1
[0145] Using the artificial wetland system of this embodiment, a centralized domestic sewage treatment station is built in a rural area, and an alternate parallel system is used to set up two sets of parallel connections. The wetland main body of the tidal flow displacement wetland is divided into 4 grids, and the first grid water inlet distribution point is opened. , the second grid drainage point, close the first grid reoxygenation to make the anaerobic zone, open the second, third, and fourth grid reoxygenation, and do a good job of the oxygen zone.
[0146] Treat 100 farmer households, about 400-500 people, with an average daily sewage volume of 40-50m 3 / d, influent COD is 300-400mg / L, BOD is 200-250mg / L, NH 3 -N is 35mg / L, TN is 40mg / L. After treatment, the COD of the total discharge outlet water is 25-40mg / L, the BOD is 5-8mg / L, and the NH 3 -N is 1 ~ 8mg / L, TN is 10 ~ 12mg / L, which is below the first-class A limit of the urban sewage discharge standard, and the treat...
Embodiment 2
[0149] With the constructed wetland system of this embodiment, a part of the river water is diverted from the upstream of a small river to the downstream, the lifting pump is omitted, and the hydraulic tidal flow variable displacement constructed wetland ecological restoration process is adopted, and single-process operation is adopted, and the tidal flow displacement of the wetland is improved. The main body of the wetland is divided into 8 grids. Open the second and fifth grids for water distribution points, the third and sixth grids for drainage points, close the first, second, fifth, and sixth grids for reoxygenation, and open the third, fourth, and seventh grids. , Eight grid reoxygenation, do a good job in the oxygen zone.
[0150] The hourly treatment water volume is about 10~50m 3 / h, the influent water quality BOD is 8~12mg / L, NH 3 -N is 3~4mg / L, TN is 4~6mg / L, which belongs to the water body inferior to Class V. After treatment, the effluent BOD is 1-4mg / L, NH 3 -...
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Abstract
The invention discloses a hydraulic tidal current position-variable artificial wetland and a process for carrying out sewage treatment by utilizing the hydraulic tidal current position-variable artificial wetland. The hydraulic tidal current position-variable artificial wetland comprises a pulse stream subsectional wetland, at least one set of pretreatment systems and a tidal current position-variable wetland, wherein the pretreatment systems are mutually connected; the tidal current position-variable wetland is connected with the pulse stream subsectional wetland; the tidal current position-variable wetland comprises a wetland main body, a position-variable water distribution device, a position-variable water discharge device and an automatic reoxygenation device; the position-variable water distribution device is erected above the wetland main body, the position-variable water discharge device is used for connecting the wetland main body and the pulse stream subsectional wetland, and the automatic reoxygenation device is arranged in the wetland main body; and the pulse stream subsectional wetland comprises a water inlet mixing area, a first-stage buffer area, a second-stage buffer area and a water discharge area which are sequentially arranged. The hydraulic tidal current position-variable artificial wetland disclosed by the invention has very high natural reoxygenation capacity, and improves the unit volume treatment efficiency in an aerobiotic operating mode under the precondition that the energy consumption is not increased, and thus reducing the occupied area; and the hydraulic tidal current position-variable artificial wetland disclosed by the invention realizes the enhancement of denitrification capacity by creating a variable inner habitat of a dynamic wetland and solves the problem of blockage.
Description
technical field [0001] The invention relates to the field of resource and environmental protection, in particular to a hydraulic tidal flow variable displacement artificial wetland applied to sewage treatment and surface water restoration treatment and a process for treating sewage with the wetland. Background technique [0002] With the enhancement of people's awareness of environmental protection, people have higher and higher requirements for water treatment. They not only pay attention to the degree of water treatment, but also pay attention to the aesthetics and affinity of facilities. Managers are more concerned about the investment and operating costs of facilities. Constructed wetland is an irreplaceable, low-energy, environmentally friendly and ecological management technology. It has been used in sewage treatment and surface water restoration for many years. It has the advantages of less power, beautiful ecology, simple management, and good treatment effect. Disadv...
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