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Hydraulic infiltration suspended filler type water purification wetland

A technology for suspended fillers and water purification, which is applied in biological water/sewage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc. It can solve problems affecting the normal operation procedures of wetlands, high engineering costs, and reducing sewage treatment capacity. To achieve the effect of improving water purification effect, small head loss and good water purification effect

Inactive Publication Date: 2019-08-16
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During wetland operation, intermittent water intake, bed rotation, clean water backwashing, regular renewal or medium cleaning are usually adopted to solve the clogging problem. However, this will affect the normal operation procedures of the wetland to a certain extent, reduce the sewage treatment capacity, and the project cost is relatively high. high

Method used

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  • Hydraulic infiltration suspended filler type water purification wetland
  • Hydraulic infiltration suspended filler type water purification wetland
  • Hydraulic infiltration suspended filler type water purification wetland

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Such as Figure 1 to Figure 4 A water purification wetland of hydraulic infiltration suspended packing type is shown, and the arrow in the figure indicates the direction of water flow;

[0032]Including wetland filler layer 5, porous concrete cloth dam 4, water level controller 2, wetland enclosure 1, wetland filler layer includes graded gravel cushion layer 51, lightweight concrete filler layer 52, overlying planting soil Layer 53; the wetland filler layer is provided with wetland moisture-resistant plants 9; one end of the water purification wetland is provided with a water inlet pipe 8, and the other end of the wetland enclosure is provided with a water level controller 2;

[0033] The wetland enclosure is equipped with a wetland filler layer and a porous concrete cloth dam. The wetland enclosure is surrounded by a bottom wetland enclosure and a side wetland enclosure. The bottom wetland enclosure includes a first step and a second step. The second step is higher tha...

Embodiment 2

[0045] The hydraulic infiltration suspended packing water purification wetland in Example 1 is applied to the treatment of domestic sewage in Southeast University.

[0046] The domestic sewage discharge of a dormitory in Southeast University is about 8.0m 3 / d, after the discharged domestic sewage is treated by septic tanks, aerobic contact oxidation and inclined tube sedimentation tanks, the COD and NH in the water 3 -N, TN, TP and other average concentrations are 73mg / L, 6.76mg / L, 18.9mg / L and 2.609mg / L respectively, which is similar to the secondary water quality of "Pollutant Discharge Standards for Urban Sewage Treatment Plants" (GB18918-2002 ), the effluent of the physical and chemical treatment unit is deeply purified by hydraulic infiltration of suspended packing water purification wetland, and the water quality reaches the first-class A standard and is discharged into the school river of Southeast University. The wetland covers an area of ​​19.25m 2 , with a length ...

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Abstract

The invention discloses a hydraulic infiltration suspended filler type water purification wetland. The wetland comprises a wetland filler layer, a porous concrete dam, a water level controller and a wetland enclosure, and the wetland filler layer comprises a graded gravel cushion layer, a lightweight concrete filler layer and an overlying planting soil layer which are sequentially arranged from bottom to top; wetland moisture-tolerant plants are arranged on the wetland filler layer; and a water inlet tube is arranged at one end of the wetland enclosure, and the water level controller is arranged at the other end of the wetland enclosure. The wetland is provided with the water level controller to keep the wetland filler infiltrated in order to make a low-density concrete filler suspended, alightweight concrete material with a porous structure has the potential high phosphorus adsorption performance, and makes nutrient salts in the sewage adsorbed and used for plant absorption and microbial degradation, and the relative movement of the suspended filler and water flow make the solid-liquid contact interface of the wetland updated at any time, so the wetland maintains the efficient removal of pollutants for a long time.

Description

technical field [0001] The invention relates to the technical field of purification of polluted water in the disciplines of environmental engineering and ecological engineering, and is a bio-ecological water quality purification technology applied to urban and rural sewage treatment, especially suitable for further treatment of tail water after biochemical treatment of distributed domestic sewage, specifically: The utility model relates to a wetland for purifying water of a water power infiltration suspension packing type. Background technique [0002] Constructed wetland is a water purification method similar to swampy ground that is artificially built and operated under control. Sewage is introduced into the constructed wetland in an organized manner, and the effective removal of various types of pollutants is completed by using the systemic effects of fillers, plants, physicochemical and biochemical systems. Constructed wetland has the advantages of large buffer capacity,...

Claims

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Application Information

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IPC IPC(8): C02F3/34C02F3/32
CPCC02F3/32C02F3/34
Inventor 吴义锋钱怡君张家铭赵政坤赵润玉吕锡武
Owner SOUTHEAST UNIV