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Method for constructing artificial wetland through aged refuse for processing sewage

A technology for mineralizing garbage and artificial wetlands, applied in chemical instruments and methods, sustainable biological treatment, biological water/sewage treatment, etc., can solve problems that have not yet been discovered, and achieve convenient construction, strong purification capacity, investment and operating costs. low effect

Active Publication Date: 2012-04-25
BAOSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

After consulting domestic and foreign patents and literature, no such related reports have been found

Method used

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  • Method for constructing artificial wetland through aged refuse for processing sewage
  • Method for constructing artificial wetland through aged refuse for processing sewage
  • Method for constructing artificial wetland through aged refuse for processing sewage

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] The mineralized waste is taken from the landfill unit that has been closed for 13 years. The surface settlement of the landfill site is 8mm / a, the amount of leachate and gas produced by the landfill unit itself is very small, and the mass fraction of biodegradable substances in the waste 5%, and the mass concentration ρ(COD) of COD in the leachate is below 80mg / L, the closure unit is basically in a stable state.

[0041] After the mineralized waste is excavated, dried, screened and sorted, large debris such as stones and wood are used for road construction, field reclamation or site backfill; valuable materials such as glass, metal, rubber and plastic are used as industrial Raw materials or fuels; fine materials with a particle size of less than 15mm and less than 40mm are used as the basic matrix of the constructed wetland and stored for future use.

[0042] Constructed wetland is a single-stage vertical subsurface flow constructed wetland with a length of 200cm and a ...

Embodiment 2

[0050] The mineralized waste is taken from the landfill unit that has been closed for 5 years. The surface settlement of the landfill site is 10mm / a, the amount of leachate and gas produced by the landfill unit itself is very small, and the mass fraction of biodegradable substances in the waste The mass concentration of COD in the leachate ρ(COD) is 90-120 mg / L, and the closure unit is basically in a stable state.

[0051] After the mineralized waste is excavated, dried, screened and sorted, large debris such as stones and wood are used for road construction, field reclamation or site backfill; valuable materials such as glass, metal, rubber and plastic are used as industrial Raw materials or fuels; fine materials with a particle size of less than 15mm and less than 40mm are used as the basic matrix of the constructed wetland and stored for future use.

[0052] The sewage to be treated is eutrophic river water. The sewage first passes through the coarse and fine screens for so...

Embodiment 3

[0061] The mineralized garbage is taken from the landfill unit that has been closed for 10 years. The surface settlement of the landfill site is 10mm / a, the amount of leachate and gas generated by the landfill unit itself is very small, and the mass fraction of biodegradable substances in the garbage It is 4%, the mass concentration ρ(COD) of COD in the leachate is 90 mg / L or less, and the closed cell is basically in a stable state.

[0062] After the mineralized waste is excavated, dried, screened and sorted, large debris and rough materials such as stones and wood are used for road construction, land construction or site backfilling; glass, metal, rubber, plastic and other valuable materials are used for industrial purposes. Raw material or fuel; the fine material with particle size less than 15mm and less than 40mm is used as the basic matrix of constructed wetland, and it is stored for future use.

[0063] The fecal sewage from the pig farm first passes through the grid fo...

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Abstract

The method provides a method for constructing artificial wetland through aged refuse for processing sewage, which includes the following steps: extracting, airing, sieving and sorting the aged refuse to obtain granular loose fine material; constructing an artificial wetland substrate bed by taking the aged refuge fine material as the base substrate together with other substrates; and growing hygrophytes on the bed. The method not only provides a new option for substrate for processing various types of sewage through wetlands and provides an approach for improving the additional value of the aged refuge.

Description

technical field [0001] The invention relates to the technical field of novel environmental protection, in particular to the use of a mineralized waste. Background technique [0002] Constructed wetland is a sewage treatment technology developed in the 1970s. It is realized by filtration, adsorption, co-precipitation, ion exchange, plant absorption and microbial decomposition according to the synergy of physics, chemistry and biology in the natural wetland ecosystem. Removal of suspended solids, organic matter, nutrients, metal ions and pathogens. This technology has the advantages of strong purification ability, good treatment effect, simple operation and strong shock load resistance. The investment and operation cost only account for 10% to 20% of the traditional secondary biochemical treatment technology. Sewage, industrial wastewater, aquaculture wastewater, etc. have good promotion value (see Chinese patents 200510011497.8, 03150053.6 and 200610036318.0). [0003] Acco...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/32C02F3/34B09B3/00
CPCY02W10/10
Inventor 石磊
Owner BAOSHAN IRON & STEEL CO LTD
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