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Low-temperature high-efficiency artificial moss wetland system

A moss and high-efficiency technology, applied in the field of low-temperature and high-efficiency artificial moss wetland systems, can solve the problems of poor efficiency, increase system cost and management difficulty, sacrifice system processing capacity, etc., achieve enhanced removal effect, facilitate root oxygen transmission, and high density Effect

Inactive Publication Date: 2011-08-03
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Overall, through the above-mentioned measures, the removal effect of carbon and nitrogen pollutants in the winter wetland system can be improved to a certain extent, but at the same time, the system processing capacity (load) is sacrificed, and the additional engineering measures taken also increase the system cost. and management difficulties, and cannot fundamentally solve the problem of poor efficiency of the wetland treatment system under low temperature conditions

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  • Low-temperature high-efficiency artificial moss wetland system

Examples

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Embodiment 1

[0017] Example 1: Utilization of polar bryophytes from the Antarctic Fildes Peninsula Bryum muehlenbeckii ( figure 1 ) as wetland planting plants, the root soil of the Antarctic moss vegetation is used as the inoculation material of the wetland matrix, and the high-efficiency phosphorus absorption material is used in the matrix to construct a shallow constructed wetland system, and the sewage flows through the constructed wetland system in the form of horizontal subsurface flow to be purified. Constructed wetlands can operate continuously or intermittently.

[0018] Antarctic moss species Bryum muehlenbeckii , moss plant 11 height 7-10cm, moss planting density is 1×10 5 ~4×10 5 Plant / m 2 .

[0019] The height of the bed body 5 is 30-40 cm. The water inlet pipe 1 and the perforated water distribution pipe 2 are arranged on the water inlet side of the bed body, and the perforated collecting pipe 3 is arranged on the water outlet side to connect to the water outlet pipe 4 ....

example

[0022] A single-household domestic sewage treatment test system in an eastern rural area in winter, the average temperature of the tester is 1.11°C, and the maximum temperature is less than 10°C.

[0023] The treated water volume is about 50-70L / day, and the system has been acclimated and started for one month, and the system processing load is about 0.16-0.22 m 11 / m 2 .day, reaction bed size: 110cm×104cm, depth 40cm, bed matrix configuration: 5cm high filter residue layer, 15cm fine sand and local soil composite matrix layer (combination ratio about 2.5:1), 20cm Antarctic moss wetland Subsurface soil and local soil compound matrix layer (the compounding ratio is about 1:1), the length of moss after nutrient cultivation is about 8cm, and the density of moss cultivation is 2.7×10 5 Plant / m 2 .

[0024] Sewage first enters the regulating tank, passes through the grid of the regulating tank, and then is sucked into the artificial moss wetland through the peristaltic pump for ...

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Abstract

The invention relates to a low-temperature high-efficiency artificial moss wetland system, which comprises a bed body, a substrate layer and moss plants, wherein a perforated water distribution pipe is arranged on one side of the bed body and is connected with a water inlet pipe, a perforated collecting pipe is arranged on the other side of the bed body and is connected with a water outlet pipe, a length-width ratio of the bed body is 2:1 to 10:1, and the height is between 30 and 40 centimeters; the substrate layer is positioned in the bed body and consists of a bottom layer, a middle layer and an upper layer, the thickness of the bottom layer is between 4 and 5 centimeters, the thickness of the middle layer is between 10 and 20 centimeters, the middle layer is formed by combining soil and fine sand, and a mixing ratio is 2:1-3:1; the thickness of the upper layer is between 10 and 20 centimeters, the upper layer is formed by combining antarctic moss wetland surface layer underlying soil and local soil, and a complex ratio is 1:1-1:2; the moss plants are positioned above the substrate layer, the height of the moss plants is between 7 and 10 centimeters, the planting density is between 1*10<5> and 4*10<5> plants / m<2>, and the moss plants are selected from Bryum muehlenbeckii; and a baffle which is parallel or perpendicular to the water inflow direction can be arranged inside the bed body. The low-temperature high-efficiency artificial moss wetland system can be used for the treatment of domestic sewage in low-temperature areas, and has the excellent treatment effect on main pollutants such as ammonia nitrogen, organic matters, total phosphorus, suspended matters and the like under the low-temperature condition of below 10 DEG C.

Description

technical field [0001] The invention belongs to the fields of environmental protection and environmental engineering, and in particular relates to a low-temperature and high-efficiency artificial moss wetland system. Background technique [0002] Constructed wetland treatment system is an economical and ecological sewage treatment process, but the treatment effect of wetland system in winter is generally poor, which affects the wide application of this process. The poor operating efficiency of the wetland process in winter is generally manifested in the decline of the removal efficiency of various pollutants such as organic matter, ammonia nitrogen, total nitrogen and total phosphorus, among which ammonia nitrogen and total nitrogen have dropped significantly. Studies have reported that under low temperature conditions in winter, the impact of constructed wetlands on NH 4 + The removal rates of -N, TN and TP were 12.0 %-40.0 %, 12.11 %-27.0 %, 6.1 %-114.0 % lower than thos...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/30C02F3/34C02F3/32
CPCY02W10/10
Inventor 王峰杨海真潘琦罗助强
Owner TONGJI UNIV
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