Method for treating sewage by using artificial wetland
A technology for constructed wetlands and sewage, applied in chemical instruments and methods, multi-stage water/sewage treatment, water/sludge/sewage treatment, etc. and other problems, to achieve good hydraulic conductivity and stable water output, maintain hydraulic conductivity and stable water output, and prolong the service life.
Active Publication Date: 2015-06-03
北京中环达生态科技有限公司
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Problems solved by technology
[0003] 1. Sewage enters the wetland system without pretreatment and enters directly, resulting in the gradual accumulation of a large amount of suspended matter
[0004] 2. The dissolved oxygen in the wetland system is low, resulting in a decrease in the removal rate of pollutants, causing organic matter and suspended solids in the sewage to stay and accumulate in the wetland system
[0005] 3. The self-recovery performance of the system is poor. After a long time of operation, the wetland matrix is saturated with adsorption, and with the accumulation of pollutants, the operation function declines
The problems in the above patent application are: on the one hand, the influent water has not been pretreated; on the other hand, both the upstream system and the downstream system use water distribution pipes to distribute water, and the water distribution pipes are laid inside the wetland system. , very prone to blockage, and inconvenient maintenance, high operating costs
In addition, the problem of low dissolved oxygen and poor self-recovery performance of the wetland system has not been fundamentally solved
Pollutants are not completely decomposed, gradually accumulate, blockage occurs, it is difficult to recover quickly, the system operation function declines, and it is difficult to ensure that the effluent discharges up to the standard
Method used
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[0043] The embodiments of the present invention will be further described below in conjunction with the accompanying drawings, but it should not be construed as a limitation of the present invention. The scope of protection of the present invention is subject to the content recorded in the claims, and any equivalent technical means based on the specification is replaced. Break away from the protection scope of the present invention.
[0044]The overall structure of the wetland system in this embodiment is shown in the figure, which includes the water inlet pipeline, aeration device and wetland unit 9; it also includes a pretreatment area 16 and three multifunctional areas 6 distributed from left to right, and the aeration device Located in the multifunctional area 6, two wetland units 9 located on the left and right sides and three multifunctional areas 6 are distributed laterally at intervals, and the wetland unit 9 communicates with the adjacent multifunctional area 6 through...
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Abstract
The invention belongs to artificial wetland utilization, especially to a method for treating sewage by using artificial wetland. The method mainly adopts sewage pretreatment, sewage aeration treatment, sewage purification and other process steps. With the present invention, problems of easy clogging, poor self-recovery capability and the like of the wetland in the prior art are solved, and the method has advantages of reasonable process design, clogging resistance of the wetland system, good pollutant removing effect, strong self-recovery capability, and the like.
Description
technical field [0001] The invention belongs to the utilization of artificial wetlands, in particular to a method for treating sewage by using artificial wetlands. Background technique [0002] Constructed wetland technology is a sewage treatment process developed in recent years. Due to its characteristics of low investment, low energy consumption, and low treatment cost, it has gradually been widely accepted. Constructed wetland is an artificially constructed complex ecosystem, and its various parts interact to remove pollutants through the comprehensive action of plants, substrates and microorganisms. In actual operation, after the constructed wetland operates for a long time, the system is prone to blockage, the function of the wetland is reduced, the purification ability of pollutants is reduced, and the effluent cannot be discharged up to the standard. The main reasons are: [0003] 1. Sewage enters the wetland system directly without pretreatment, resulting in the g...
Claims
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IPC IPC(8): C02F9/14
Inventor 栗勇田冉慧英王晓磊
Owner 北京中环达生态科技有限公司
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