Matrix composition recipe for sewage treating artificial wet land

A technology for constructed wetlands and sewage treatment, applied in biological water/sewage treatment, water/sludge/sewage treatment, sustainable biological treatment, etc., to prevent blockage, reduce project investment and operating costs, and improve treatment efficiency.

Inactive Publication Date: 2006-05-17
徐祖信 +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the wide variety of pollution types and pollution loads in s

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0014] Example 1

[0015] General domestic sewage in a park, with a water volume of 3000 tons / day, and an artificial wetland covering an area of ​​5,040m 2 . Sewage enters the constructed wetland after "biochemically enhanced flocculation" pretreatment. The composition of the constructed wetland matrix composition from top to bottom is as follows: sand and soil mixture with a volume ratio of 1:1, with a height of 10cm; gravel, with a height of 40cm; coarse sand, its height is 10cm; gravel, its height is 20cm. After passing through the constructed wetland, the water quality reaches the first level B standard in the "Emission Standard of Pollutants for Urban Wastewater Treatment Plants" (GB18918-2002).

Example Embodiment

[0016] Example 2

[0017] High-concentration ammonia nitrogen domestic sewage in a commercial office building, with a water volume of 250 tons per day, and a constructed wetland covering an area of ​​980m 2 . Sewage enters the constructed wetland after "biochemically enhanced flocculation" pretreatment. The matrix composition formula of constructed wetland is from top to bottom: sandy soil mixture with a volume ratio of 1:1, with a height of 10cm; coal slag, with a height of 30cm ; Zeolite, its height is 10cm; coarse sand, its height is 10cm; gravel, its height is 20cm. After passing through the constructed wetland, the water quality reaches the first level B standard in the "Emission Standard of Pollutants for Urban Wastewater Treatment Plants" (GB18918-2002).

Example Embodiment

[0018] Example 3

[0019] A factory has high-concentration phosphorus-containing domestic sewage, with a water volume of 400 tons / day, and a constructed wetland covering an area of ​​1,560m 2 . After pretreatment of "biochemical enhanced flocculation", it enters the constructed wetland. The matrix composition formula of the constructed wetland is from top to bottom: sand and soil mixture with a volume ratio of 1:1, with a height of 10cm; blast furnace slag, with a height of 15cm ; Limestone, its height is 25cm; coarse sand, its height is 10cm; gravel, its height is 20cm. After passing through the constructed wetland, the water quality reaches the first level B standard in the "Emission Standard of Pollutants for Urban Wastewater Treatment Plants" (GB18918-2002).

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Abstract

The matrix composition recipe for sewage treating artificial wet land includes basic matrixes for all kinds of water quality and optional matrixes for special water quality. The basic matrixes are mixed sand and soil and crushed stone; and the optional matrixes include zeolite, limestone, coal slag, steel slag, furnace slag, crushed stone, haydite, melon seed piece and pebble. The total height of the basic matrixes and the optional matrixes is 0.6-1.2 m. The present invention determines the matrix composition recipe of sewage treating artificial wet land according to the characteristic pollutant in the sewage to be treated and has raised sewage treating efficiency of artificial wet land, no jamming, reduced covered land area and low cost.

Description

technical field [0001] The invention belongs to the science of environmental protection, and in particular relates to a matrix formula used in artificial wetlands for sewage treatment. Background technique [0002] The artificial wetland system for sewage treatment is a sewage treatment technology developed in the 1970s. Compared with the traditional secondary biochemical treatment process for sewage, it has the advantages of good purification effect, simple process equipment, convenient operation and maintenance management, low energy consumption, and systematic The characteristics of strong configuration plasticity, strong adaptability to load changes, low engineering infrastructure and operating costs, certain biological safety of effluent, remarkable ecological and environmental benefits, and the realization of sewage resources are attracting more and more people's attention. [0003] Substrate is the carrier of constructed wetland to treat sewage, and the selection of i...

Claims

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Application Information

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IPC IPC(8): C02F3/10
CPCY02W10/10
Inventor 徐祖信李怀正邢绍文何校初
Owner 徐祖信
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