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Cyclic enhanced denitrification double-inlet type constructed wetland device

A technology of constructed wetland and double water inlet, which is applied in chemical instruments and methods, biological water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of wasting land and restricting the large-scale promotion of constructed wetland technology, and achieves Improve the utilization rate, overcome uneven water distribution, and high nitrogen removal efficiency

Active Publication Date: 2011-06-15
武汉昌宝环保工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This not only wastes land, but also limits the large-scale promotion of constructed wetland technology

Method used

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  • Cyclic enhanced denitrification double-inlet type constructed wetland device
  • Cyclic enhanced denitrification double-inlet type constructed wetland device

Examples

Experimental program
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Effect test

Embodiment 1

[0028] A dual-inlet artificial wetland device for enhanced circulation and denitrification, including a high-level water inlet tank 1, a main water inlet pipe 2, a main water inlet pipe valve 3, a middle water inlet pipe 4, a middle water inlet pipe valve 5, an outlet water circulation pipe 6, and an outlet water circulation pipe valve 7. Water outlet pipe 8, water outlet pipe valve 9, water outlet sump 10, water outlet circulation pump 11.

[0029] The connection relationship is: the high water inlet tank 1 is connected to the main water inlet pipe 2, the main water inlet pipe 2 is connected to the main water inlet valve 3 and the middle water inlet pipe 4 respectively through a tee, the main water inlet pipe 2 extends into the artificial wetland, and the main water inlet pipe 2 The main water inlet pipe valve 5 is arranged in the middle, the middle layer water inlet pipe 4 extends into the artificial wetland, the middle layer water inlet pipe valve 5 is arranged in the middle...

Embodiment 2

[0038] According to a specific example of the invention, the circulation enhanced denitrification double-inlet artificial wetland is built next to a residential area that is not included in the municipal pipe network, and the water volume of the residential area is 100m 3 / d.

[0039] According to the requirements of the invention, the area of ​​the cycle-enhanced denitrification double-inlet constructed wetland is 100×12=1200m 2 . The wetland is 200m long and 60m wide. The bottom of the wetland is compacted with clay to prevent seepage, and the pool structure is a brick-concrete structure.

[0040] The flow rate of the main water inlet pipe is 100m 3 / d, the flow rate of the water inlet pipe in the middle layer is adjusted to 25 m 3 / d, the flow ratio of the main water inlet pipe to the middle water inlet pipe is 4:1. The design flow rate of the circulation pump is 50 m 3 / d, the flow in the outlet water circulation pipe is adjusted to 20m 3 / d, the flow ratio of the m...

Embodiment 3

[0043] Constructed wetland project in eastern Chaohu Demonstration Area, this project adopts cycle-enhanced denitrification double-inflow constructed wetland process to treat the eutrophic water body of Chaohu Lake, and the treated water volume is 30m 3 / d, the wetland area is 360m 3 / d, 30m long and 12m wide. The bottom of the wetland is compacted with clay to prevent seepage, and the pool structure is a brick-concrete structure.

[0044] The flow rate of the main water inlet pipe is 30m 3 / d, the flow rate of the water inlet pipe in the middle layer is adjusted to 6 m 3 / d, the flow ratio of the main water inlet pipe to the middle water inlet pipe is 5:1. The design flow rate of the circulation pump is 15 m 3 / d, the flow in the outlet water circulation pipe is adjusted to 10m 3 / d, the flow ratio of the main water inlet pipe and the water outlet circulation pipe is 3:1.

[0045] The water quality indicators of the influent and effluent water of this project are as fol...

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Abstract

The invention discloses a cyclic enhanced denitrification double-inlet type constructed wetland device. The constructed wetland device comprises a high-level water inlet trough, a main water inlet pipe and a water outlet pipe, wherein the high-level water inlet trough is connected with the main water inlet pipe; the main water inlet pipe is connected with a main water inlet valve and a middle layer water inlet pipe respectively through a three-way joint and extends in a constructed wetland, the middle of the main water inlet pipe is provided with the main water inlet valve; the middle layer water inlet pipe extends in the constructed wetland, the middle of the middle layer water inlet pipe is provided with a middle layer water inlet pipe valve; the water outlet pipe is lead out of the constructed wetland, the middle of the water outlet pipe is provided with a water outlet pipe valve, the outlet end of the water outlet pipe leads to an effluent collecting pond; one end of an effluent circulating pipe extends in the constructed wetland, the middle of the effluent circulating pipe is provided with an effluent circulating pipe valve, and the other end of the effluent circulating pipe is connected with an effluent circulating pump; and the effluent circulating pump extends in the effluent collecting pond. The constructed wetland device in the invention has a simple structure and is convenient to use; and the result of continuous water quality monitoring shows that the total nitrogen removal rate of the device can reach more than 90%.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and more specifically relates to a double-inlet artificial wetland device for circulating enhanced denitrification, which is suitable for the treatment of landscape water with high water discharge requirements, advanced treatment of high-nitrogen wastewater in industrial wastewater, and decentralized living sewage treatment. Background technique [0002] According to the handbook of wetland sewage treatment published by the US Environmental Protection Agency in 1993, horizontal subsurface flow wetlands are harmful to organic matter (BOD 5 ) and suspended solids have a good removal effect, and can meet the requirements of the third-level effluent. But the removal rate of nitrogen is very low. In the study in the Yuquan Fish Viewing Pool of Hangzhou Botanical Garden, the nitrogen removal rate of the wetland was only 12%. The constructed wetland in Shatian, Shenzhen is mainly used to tre...

Claims

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Application Information

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IPC IPC(8): C02F3/32C02F3/34
CPCY02W10/10
Inventor 刘浩张列宇刘军刘彬彬项娇
Owner 武汉昌宝环保工程有限公司
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