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Combined process of reinforced biochemical flocculation and artificial wet land treatment of sewage

A constructed wetland and biochemical technology, applied in biological water/sewage treatment, flocculation/sedimentation water/sewage treatment, sustainable biological treatment, etc., can solve the problem of large area, easy blockage, and restrictions on the promotion of constructed wetland sewage treatment technology and other issues, to achieve the effect of reducing the occupied area, reducing the investment cost and increasing the surface hydraulic load

Inactive Publication Date: 2008-09-03
徐祖信 +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, there are currently two major defects in constructed wetlands: large area and easy to block, which limits the promotion of constructed wetland sewage treatment technology

Method used

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  • Combined process of reinforced biochemical flocculation and artificial wet land treatment of sewage

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Sewage treatment project in a forest tourism park:

[0019] Treated water volume: 3000m 3 / d domestic sewage; influent and effluent water quality is as follows:

[0020] serial number

project

flooded

out of water

1

COD Cr (mg / l)

≤350

≤50

2

BOD 5 (mg / l)

≤150

≤20

3

SS(mg / l)

≤200

≤20

[0021] 4

NH 3 -N (mg / l)

≤30

≤8

5

TP (mg / l)

≤5

≤0.4

[0022] The sewage first enters the collection well through the mechanical grille to remove larger solid impurities. The sewage from the collection well is pumped up to the adjustment tank to homogenize the water quality and quantity, and then enters the reaction tank, where the coagulant basic aluminum chloride is added (PAC) 50mg / L and flocculant polyacrylamide PAM0.5mg / L, after fully reacting, enter the sedimentation tank for mud-water separation, and the effluent from ...

Embodiment 2

[0025] A sewage treatment project in a residential area:

[0026] Treated water volume: 630m 3 / d domestic sewage; influent and effluent water quality is as follows:

[0027] serial number

project

flooded

out of water

1

COD Cr (mg / l)

≤350

≤60

2

BOD 5 (mg / l)

≤150

≤20

3

SS(mg / l)

≤200

≤20

4

NH 3 -N (mg / l)

≤30

≤8

5

TP (mg / l)

≤5

≤1

[0028] The sewage first enters the water collection well through the mechanical grille to remove large solid impurities. The sewage from the water collection well is pumped to the regulating tank to homogenize the water quality and quantity, and then enters the reaction tank, where the coagulant ferric chloride (FeCl 3 )70mg / L, after fully reacting, it enters the sedimentation tank for mud-water separation, and the effluent from the sedimentation tank enters the constructed wetland for further ...

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Abstract

The combined process of reinforced biochemical flocculation and artificial wet land treatment of sewage includes the following steps: A. pre-treatment through eliminating large solid foreign mater in lattice, collecting to well and pumping to the regulating pond for homogenizing; B. reinforced biochemical flocculation inside reaction pond with flocculant and coagulant in concentration 0-100 mg / L and sludge-water separation in settling pond; and C. artificial wet land treatment with exhaust reaching the discharge or reuse standard. The present invention has the advantages of no jamming of artificial wet land, greatly raised surface treating load, reduced covered area of artificial wet land, and low sewage treating cost, etc.

Description

technical field [0001] The invention belongs to the field of environmental protection science and engineering, and in particular relates to a new sewage treatment process, that is, a sewage treatment process combining biochemical enhanced flocculation and artificial wetland. Background technique [0002] Constructed wetland sewage treatment system is a sewage treatment technology developed in the 1970s. Compared with the traditional sewage secondary biochemical treatment process, it has 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] However, there are two ma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14C02F1/52C02F3/32
CPCY02W10/10
Inventor 徐祖信李怀正傅威喻文熙
Owner 徐祖信
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