Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Wastewater treatment system and wastewater treatment process

A wastewater treatment system and wastewater treatment technology, applied in the field of water treatment, can solve problems such as river water quality not up to standard, achieve the effects of reducing adverse impacts, overcoming inhomogeneity, and stabilizing effluent water quality

Inactive Publication Date: 2020-01-17
爱土工程环境科技有限公司
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is a big gap between the water quality standards of wastewater discharged into the river and the water quality standards of the river. For example, the discharge of papermaking wastewater implements the "Pulp and Paper Industry Water Pollutant Discharge Standard", COD (Chemical Oxygen Demand, chemical oxygen demand ) is 100mg / kg, while the general river water quality implements the Class IV standard of "Surface Water Environmental Quality Standards", and the COD is 30mg / kg
Therefore, a large amount of waste water flows into the river, which exceeds the self-purification capacity of the river, resulting in the situation that the water quality of the river is not up to standard.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Wastewater treatment system and wastewater treatment process
  • Wastewater treatment system and wastewater treatment process
  • Wastewater treatment system and wastewater treatment process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0090] Tail water treatment project of a paper mill in Southwest China, with a discharge volume of 3500m 3 / d. Table 1 shows the main design indicators of the designed influent and effluent water quality of this project.

[0091] Table 1 Design inlet and outlet water quality

[0092]

[0093] Homogeneous tank design: L*B*H (length*width*height) = 14m*2m*5.5m.

[0094] Ozone contact oxidation pool design: 1) Ozone generators are 500g / h (A area) 300g / h (B area); 2) Contact time 20min; 3) Effective water depth 5m; 4) Contact oxidation pool size: L*B *H=3m*2m*5.5m (B area); L*B*H=4m*2m*5.5m (A area). The biological contact oxidation tank is equipped with 3 expansion chambers, and the microporous aeration head is used to release ozonated gas. The cover plate is set on the top of the tank to seal the contact tank, and an exhaust gas recovery device is installed to avoid leakage.

[0095] Design of comprehensive pretreatment tank: 1) Hydraulic retention time: 4h; 2) Effective ...

Embodiment 2

[0100] Tail water treatment project of a paper mill in central China, with a discharge volume of 7000m 3 / d. Table 2 shows the main design indicators of the design influent and effluent water quality of this project.

[0101] Table 2 Design inlet and outlet water quality

[0102]

[0103] Homogeneous tank design: L*B*H=26m*2m*5.5m.

[0104] Ozone contact oxidation tank design: 1) The ozone generators are 800g / h (A zone) and 500g / h (B zone); 2) The contact time is 20min; 3) The effective water depth is 5m; 4) The size of the contact oxidation tank: L*B *H=5m*2m*5.5m (B area); L*B*H=8m*2m*5.5m (A area).

[0105] Design of comprehensive pretreatment tank: 1) Hydraulic retention time: 4h; 2) Effective water depth of comprehensive pretreatment tank: H=5m; 3) Biofilm carrier layout density: 0.1m 2 / m 3 ;4) Size of comprehensive pretreatment pool: L*B*H=14m*6m*5.5m (B area); L*B*H=16m*8m*5.5m (A area); 5) Artificial aquatic plant carrier: 840m (A district); 1480m (B district...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to the technical field of water treatment, and particular provides a wastewater treatment system and a wastewater treatment process. The wastewater treatment system includes: anoptional homogenization pond, an oxidation pond, an integrated pretreatment pond, an artificial wetland unit and an ecological treatment unit connected in sequence; and the ecological treatment unit includes an ecological floating island. According to the wastewater treatment system, an organic matter which is difficult to biochemically degrade in wastewater can be effectively degraded, the nitrogen and phosphorus content is effectively reduced, effluent water quality can at least meet the Class IV standard of the "surface water environmental quality standard", and effluent water can be directly discharged into a river without causing bad influences on water quality of the river.

Description

technical field [0001] The invention relates to the technical field of water treatment, in particular to a wastewater treatment system and a wastewater treatment process. Background technique [0002] With the rapid development of petrochemical, plastic, synthetic fiber, coking, printing and dyeing industries, various wastewater containing a large amount of refractory organic pollutants has increased accordingly. After years of rectification, these wastewater can basically meet the discharge standards. However, there is a big gap between the water quality standards of wastewater discharged into the river and the water quality standards of the river. For example, the discharge of papermaking wastewater implements the "Pulp and Paper Industry Water Pollutant Discharge Standard", COD (Chemical Oxygen Demand, chemical oxygen demand ) is 100mg / kg, while the general river water quality implements the Class IV standard of the "Surface Water Environmental Quality Standard", and the ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14
CPCC02F9/00C02F3/327C02F1/78C02F1/722C02F1/72C02F3/308C02F2001/007
Inventor 何依琳郭小伟肖伟李娜刘少杰田涛张凤英
Owner 爱土工程环境科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Eureka Blog
Learn More
PatSnap group products