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Highly integrated mature technology of sewage A2 / O treatment process

Technical Overview

Highly optimized A2/O sewage treatment process (technical integration) use the most advanced spray-type dissolved air flotation, efficient biofilm process, international cutting-edge technology SND (simultaneous nitrification and denitrification) and non-energy automatic filtering of gravity siphon. According to the basic characteristics of pollutants and pollutant control project in the national "Integrated Wastewater Discharge Standard" (GB8978-1996) and "urban wastewater reuse water quality standards" (GB/T18918-2002),this process target to  integration design of the corresponding optimal a number of professional technical.It enable the different nature ,different states,different components of sewage to treat in the same processing facility and the same process using different processes ,finally it can remove synchronously a number of basic pollutants control.

Technical advantages

Saving 20% investment

Savings 30% Operating cost (urban sewage as low as 0.23 yuan/t)

Area reduced by 25%

High degree of automation, easy management

Dissolved oxygen up to 10~15ppm

Water is better than A and water reuse standard(green, irrigation, etc.)

Biofilm reactor instead of membrane bioreactor

Sludge was minimal ——1 / 5 of activated sludge process

Modular design ——Project progress can be configured flexibly according to the amount of water and one or two

Application scope

Sewage centralized treatment: small towns centralized sewage treatment plants and sewage treatment station of Economic Development Zone.

Sewage treatment on-site: residential areas, the company staff living quarters, military barracks, hotels, restaurants, railway stations, airports, ports, hospitals, schools, highway service areas, resorts and other domestic wastewater

Industrial wastewater treatment:

brewing, beer industry

farming, tanning industry

food, fruit processing industry

textile, printing and dyeing industry

paper (white water) industry

proprietary pharmaceutical industry

slaughtering, meat processing and other industrial organic wastewater

The comparison between highly integrated mature technology of sewage A2 / O treatment process and conventional process

Parameters

Integrated process

Oxidation ditch

SBR

BF

Contact oxidation

CODmax mg/L

3000

1000

1000

500

600

S(㎡/m³,d)

0.1~0.25

0.5~1.1

0.3~0.54

0.25~0.55

Operation cost(yuan/m³)

0.21~0.35

0.46

0.60

0.55

0.67

Emission CODcr(mg/L)

30~100

100

70~100

60~100

100

Emission BODcr(mg/L)

5~20

20

20

10~20

20

Emission SS(mg/L)

5~10

70

50

10~20

70

Emission NH4+-N(mg/L)

5~10

15~20

15

10~15

20

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