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Underflow-like constructed wetland type water treating method

A constructed wetland and water treatment technology, applied in multi-stage water treatment, water treatment parameter control, biological water/sewage treatment, etc., can solve problems such as complex control and poor nitrogen removal effect, and achieve high water purification efficiency and structure Simple, easy-to-operate effect

Active Publication Date: 2017-11-24
SHANGHAI INVESTIGATION DESIGN & RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the subsurface wetland system, the oxygen transport effect of plant roots is used, and the removal effect of organic matter and heavy metals is good, but the control is relatively complicated, and the denitrification effect is not good.

Method used

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  • Underflow-like constructed wetland type water treating method
  • Underflow-like constructed wetland type water treating method
  • Underflow-like constructed wetland type water treating method

Examples

Experimental program
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Embodiment 1

[0111] In this embodiment, when the submerged flow artificial wetland type water treatment system is installed in the river channel, the water distribution side plate 120, the water distribution bottom plate 110 and the water retaining member 130 are sequentially connected to form a frame body; The two sides are connected and surround the reaction chamber 100. The bottom end of the water retaining member 130 is also connected to a vertically arranged baffle plate 140. The bottom end of the baffle plate 140 is connected to the bottom of the river channel. Connect with two revetments. During the flow process, the water in the channel flows under the water distribution bottom plate 110 and is blocked by the blocking plate 140 . The water enters the reaction chamber 100 through the water distribution holes 111 on the water distribution bottom plate 110 . The water body flows along the channel before entering the reaction chamber 100 .

[0112] The vertical height of the water dis...

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Abstract

The invention provides an underflow-like constructed wetland type water treating method. According to the water treating method, water flows into a reaction cavity through water distribution holes, carbon source portions release organic matters into the water after being immerged into the water, oxygen content of the water in a lower cavity body is not larger than 2mg / L, the ratio of the total concentration of the organic matters in the water in the lower cavity body to the total concentration of Kjeldahl nitrogen in the water outside the reaction cavity is larger than 4, and accordingly, in the lower cavity body, anaerobic microorganism films are formed on biological stuffing units outside the carbon source portions, and the water is subjected to denitrification reaction on the anaerobic microorganisms; the water after being denitrified flows into an upper cavity body through flow guiding holes in flow guiding pieces; gas releasing portions in the upper cavity body release dissolved oxygen into the water, the oxygen content of the water in the upper cavity body is not smaller than 6mg / L, and accordingly, aerobic microorganism films are formed on the biological stuffing units outside the gas releasing portions, and the water on the aerobic microorganism films is subjected to aerobic reaction. The underflow-like constructed wetland type water treating method used for water purification is convenient to operate and high in water purification efficiency.

Description

technical field [0001] The invention relates to the technical field of ecological environment engineering, in particular to a subsurface flow artificial wetland-like water treatment method. Background technique [0002] At present, in the field of polluted water purification, the widely used ecological purification technologies mainly include constructed wetlands, ecological grass, ecological floating beds, etc. Among them, subsurface flow constructed wetlands are widely used because of their high purification efficiency. Subsurface wetlands are man-made landscapes that use hydrophilic plants as surface greening and sandy soil as filler to allow water to infiltrate and filter naturally. It has the characteristics of no surface water, small footprint, high utilization rate and convenient maintenance, and is deeply loved by people. In the subsurface wetland system, the oxygen transport effect of the plant root system is used, and the removal effect of organic matter and heavy...

Claims

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Application Information

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IPC IPC(8): C02F3/34C02F3/32C02F3/30C02F101/30C02F101/16
CPCC02F3/301C02F3/302C02F3/32C02F3/34C02F2101/105C02F2101/16C02F2101/30C02F2103/007C02F2203/006C02F2209/08C02F2209/16C02F2209/22C02F2301/08C02F2303/14Y02W10/10
Inventor 张俊曹卉琚泽文李阳卓元午
Owner SHANGHAI INVESTIGATION DESIGN & RES INST
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