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Anti-blocking water distribution and back-flushing method and device for constructed wetland

A technology of artificial wetland and backwashing, which is applied in chemical instruments and methods, biological water/sewage treatment, water/sludge/sewage treatment, etc. It can solve the problems of easy clogging of the surface layer, insufficient use of backwashing efficiency, Problems such as high energy consumption and cost, to achieve the effect of prolonging the service life, realizing the optimal configuration and utilization of water, saving construction and maintenance costs

Active Publication Date: 2016-05-25
INST OF AQUATIC LIFE ACAD SINICA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In view of the problems existing in the existing artificial wetland technology that the surface layer is easy to be blocked, the lower layer of filler is not fully utilized, the efficiency of backwashing is low, and the cost of energy consumption is high. The flushing method is simple and feasible, and easy to operate, which can greatly prolong the service life of the wetland and improve the recovery efficiency of the filler

Method used

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  • Anti-blocking water distribution and back-flushing method and device for constructed wetland
  • Anti-blocking water distribution and back-flushing method and device for constructed wetland
  • Anti-blocking water distribution and back-flushing method and device for constructed wetland

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Embodiment 1

[0046] The technical scheme adopted by the present invention is as follows: a water distribution system is arranged on the surface layer of the existing common artificial wetland and its lower layers, and a ventilation pipe connected with the atmosphere is connected to the water distribution pipe below the surface layer of the wetland to realize its automatic oxygenation. When operating in wetlands, first use the surface pipes to distribute water and work for a period of time. When the wetlands are clogged, switch to the next layer of water distribution system to distribute water. The filling layer above the pipes is left to stand at the same time or cooperate with other methods to restore partial blockages, and so on. Push down to feed water layer by layer to prolong the service life of the wetland and the blockage recovery cycle. When the wetland is clogged again after distributing water through the lowest layer of water distribution pipes for a period of time, close the wate...

Embodiment 2

[0067]A device for anti-clogging water distribution and backwashing in constructed wetlands. The device includes a constructed wetland pool body 11 with a size of 1m in length x 1m in width x 1.6m in height and is made of concrete and bricks; Packing bed 12, the top wetland is provided with a super high space of 10cm; the emergent plant canna 13 planted on the surface of the packing, and the first water distribution pipe 14 located on the surface of the artificial wetland and its lower packing layer laid in layers from top to bottom , the second water distribution pipe 15, the third water distribution pipe 16, the intermediate pipe 21 and the air pipe 20 connected to the second water distribution pipe 15 and the third water distribution pipe 16 in the filler, the water outlet pipe 17 at the bottom of the wetland, the first water inlet of the wetland Valve 1, the second water inlet valve 2, the third water inlet valve 3, the water outlet valve 4 and pipelines, the wetland first ...

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Abstract

The invention discloses an anti-blocking water distribution and back-flushing method and device for a constructed wetland. Water distribution pipes are arranged in layers on the surface layer of the constructed wetland and inside filler and connected with an incoming water source through valves respectively; the water distribution pipe in the filler is connected with an air pipe through an intermediate pipe; and the top of the air pipe is communicated with the atmosphere. When the device runs in the wetland, constant water distribution is realized layer by layer from top to bottom by controlling the on / off of the valves, and the yielding water is collected and discharged by a water-out pipe at the bottom of the wetland; and in back flushing, the water-out and distribution pipes are used as back-flushing layered water feed and collection pipes. The parameters such as back-flushing strength and back-flushing time are set according to the actual blocking degree of each layer of the wetland, and the back-flushing water is discharged nearby; the phenomenon that the filler close to the water distribution positions is easily blocked together in the constructed wetland can be effectively solved, the filler of each layer is fully utilized, and the service life is prolonged; due to the back-flushing way, the back-flushing efficiency is improved, the distribution of back-flushing water is optimized, and the operation is simple; and since an additional back-flushing pipe is not needed, the cost is lowered.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment ecological engineering, and more specifically relates to an anti-clogging water distribution and backwashing method for artificial wetlands, and also relates to an anti-clogging water distribution and backwashing device for artificial wetlands, which is used to solve the plugging of artificial wetland fillers question. Background technique [0002] Constructed wetland is an ecological and environmentally friendly sewage treatment technology. It is often used in sewage treatment and tail water deep purification. The treatment effect is good, and it also has a landscape effect, simple operation and maintenance, and low cost, so it has a wide range of applications. However, there is a common problem of blockage in constructed wetlands, resulting in the decline of its treatment effect, the reduction of hydraulic conductivity, surface water and mosquito breeding, etc., which have become a majo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/32C02F3/34
CPCC02F3/327C02F3/34C02F2303/14Y02W10/10
Inventor 吴振斌王媚徐栋张义武俊梅陈迪松贺锋周巧红
Owner INST OF AQUATIC LIFE ACAD SINICA
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