System for treating constructed wetland fillers of organic composite slag

A treatment system and artificial wetland technology, applied in the field of organic composite slag-filled artificial wetland treatment system, can solve the problems of unsatisfactory ecological effects, environmental side effects, high requirements, etc., achieve waste utilization, improve the growth environment, and low construction and operation costs Effect

Active Publication Date: 2013-02-06
SHANGHAI MUNICIPAL SEWERAGE CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Physical and chemical techniques have good short-term effects, but are expensive, have certain side effects on the environment, and have unsatisfactory ecological effects. They are generally used as emergency measures
Compared with physical and chemical remediation technology, the principle of bioremediation is to strengthen the denitrification in natural water bodies under the action of man-made, so as to achieve the purpose of denitrification, which has the advantages of low cost and good ecological effect, but currently the more common Biological denitrification technology has high requirements on carbon sources in water bodies, and has certain limitations

Method used

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  • System for treating constructed wetland fillers of organic composite slag
  • System for treating constructed wetland fillers of organic composite slag

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] An organic composite slag filler artificial wetland treatment system, which strengthens denitrification to treat high nitrate nitrogen polluted water bodies. The structure of the treatment system is as follows: figure 1 and figure 2 As shown, it includes a structure 1, the front and rear ends of the structure 1 are respectively provided with a water inlet pipe 2 and a water outlet pipe 3, and the inside of the structure 1 is divided into a water storage area 6, a water distribution area 7, a treatment area 8 and a water collection area from front to back. 9. The substrates in the water distribution area 7 and the water collection area 9 are pebble fillers. The treatment area 8 includes a humus layer 82 and a filler layer 81 from top to bottom. The humus layer 82 is planted with plants 83 and the filler layer 81 The inner matrix is ​​organic composite slag filler.

[0033] The structure 1 is a cuboid structure with a ratio of length to width of 6:1. The depth of the st...

Embodiment 2

[0046] An organic composite slag filler constructed wetland treatment system, the structure of which is shown in Example 1, in which the length, width and depth of the structure are 4.5m, 0.75m and 0.6m respectively, and the planted plants are canna. The hydraulic retention time HRT=24h, the hydraulic load is 0.025m / h, the water temperature is 8.5°C, the system feed water DOC, NO 3 - - When the concentration of N is 0.88mg / L and 25.46mg / L respectively, DOC and NO are measured after flowing through the system 3 - The concentrations of -N are 0.81mg / L and 20.81mg / L respectively. 3 - The removal rate of -N was 18.27%.

Embodiment 3

[0048] An organic composite slag filler constructed wetland treatment system, the structure of which is shown in Example 1, in which the length, width and depth of the structure are 4.5m, 0.75m and 0.6m respectively, and the planting plants are Zizania. The hydraulic retention time HRT=24h, the hydraulic load is 0.025m / h, the water temperature is 8.5°C, the system feed water DOC, NO 3 - - When the concentration of N is 0.88mg / L and 25.46mg / L respectively, DOC and NO are measured after flowing through the system 3 - The concentrations of -N are 0.31mg / L and 21.81mg / L respectively. 3 - The removal rate of -N was 14.34%.

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Abstract

The invention relates to a system for treating constructed wetland fillers of organic composite slag and aims at strengthening denitrification treatment of nitrate-nitrogen pollution water. The system comprises a structure, a water inlet pipe and a water outlet pipe are arranged at the front end and the rear end of the structure respectively, the inside of the structure is divided into a water storage area, a water distribution area, a treatment area and a water collection area from front to back, matrixes in the water distribution area and in the water collection area are pebble fillers, the treatment area comprises a humus soil layer and a filler layer from top to bottom, plants are planted on the humus soil layer, and matrixes in the filler layer are the organic composite slag. Compared with systems in prior art, the system for treating the constructed wetland fillers of the organic composite slag has the advantages that additional carbon sources are not required to be added, the operating management is simple, the building and operating costs are low, the system is high in ability for removing nitrate and nitrogen and good in outlet water quality, a certain removal rate of the nitrate and the nitrogen can be guaranteed under the condition of low carbon sources in winter, the removal rate of the nitrate and the nitrogen can reach over 50% under the condition of a certain carbon source in summer, and the removal rate can be greatly increased with increase of carbon sources in the inflow.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to an organic composite slag filler artificial wetland treatment system. Background technique [0002] How to quickly and efficiently remove nitrogen and phosphorus elements in water has also become one of the important directions in the field of water pollution control technology. The remediation technologies of nitrogen pollution in water bodies mainly include physical and chemical methods and biological treatment methods. Physical remediation technology concentrates nitrate in the medium or waste liquid, which plays the role of waste transfer or concentration, but does not completely remove nitrate nitrogen. The chemical remediation technology mainly uses reducing agents to reduce nitrate nitrogen. Physical and chemical techniques have good short-term effects, but are expensive, have certain side effects on the environment, and have unsatisfactory ecological effects. They are ge...

Claims

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Application Information

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IPC IPC(8): C02F3/32C02F3/00
Inventor 程晓波潘炜王非王国华陆松柳柴一冈
Owner SHANGHAI MUNICIPAL SEWERAGE CO LTD
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