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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 sewage, no single matrix can effectively solve all sewage pollutants

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] General domestic sewage in a park, the water volume is 3000 tons / day, and the constructed wetland covers an area of ​​5040m 2 . The sewage enters the constructed wetland after being pretreated by "biochemical enhanced flocculation". 40cm; coarse sand, its height is 10cm; gravel, its height is 20cm. After passing through the constructed wetland, the water quality reaches the first-class B standard in the "Pollutant Discharge Standards for Urban Sewage Plants" (GB18918-2002).

Embodiment 2

[0017] High-concentration ammonia-nitrogen domestic sewage from a commercial office building, with a water volume of 250 tons per day, and a constructed wetland covering an area of ​​980m 2 . Sewage is pretreated by "biochemical enhanced flocculation" and then enters the constructed wetland. The composition formula of the constructed wetland matrix from top to bottom is: sand-soil mixture with a volume ratio of 1:1, with a height of 10cm; cinder, with a height of 30cm ; Zeolite, its height is 10cm; Coarse sand, its height is 10cm; Crushed stone, its height is 20cm. After passing through the constructed wetland, the water quality reaches the first-class B standard in the "Pollutant Discharge Standards for Urban Sewage Plants" (GB18918-2002).

Embodiment 3

[0019] A factory has high-concentration phosphorus-containing domestic sewage, the water volume is 400 tons per day, and the constructed wetland covers an area of ​​1560m 2 . After "biochemical enhanced flocculation" pretreatment, it enters the constructed wetland. The composition formula of the constructed wetland matrix from top to bottom is: sand-soil mixture with a volume ratio of 1:1, with a height of 10cm; blast furnace slag, with a height of 15cm Limestone, whose height is 25cm; coarse sand, whose height is 10cm; crushed stone, whose height is 20cm. After passing through the constructed wetland, the water quality reaches the first-class B standard in the "Pollutant Discharge Standards for Urban Sewage 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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