1. High efficiency biochemistry treating field: Apply new type of filler, with large specific surface area, strong adhesive attraction and well attack resistance ability.

2.Settling pond: Apply inclind tube settling with high efficiency, small volume of settling pond.

3. Filtering pond: Apply light filter material, water power for backwashing, so there is no need of backwashing pump, and it saves electricity.

These plants are designed on the following inlet sewage characteristics.

Characteristics	Unit	Value
COD	mg/l	200~500
BOD	mg/l	100~300
NH4-N	mg/l	20~ 40
Suspended Solids	mg/l	100~300
PH	----	Around 7
Oil and Grease	mg/l	Less than 20

The expected treated water characteristics.

Characteristics	Unit	Value
COD	mg/l	50
BOD	mg/l	10
NH4-N	mg/l	5
Suspended Solids	mg/l	10/30
PH	----	Around 7
Oil and Grease	mg/l	10

Equipment Structure

1. High efficiency biochemistry treating field: Apply new type of filler, with large specific surface area, strong adhesive attraction and well attack resistance ability.

2.Settling pond: Apply inclind tube settling with high efficiency, small volume of settling pond.

3. Filtering pond: Apply light filter material, water power for backwashing, so there is no need of backwashing pump, and it saves electricity.

4. Contact sterilized pond: Mixing thimerosal and wastewater to ensure the out water index.

5. All of the system applies integrated treatment as equipment nucleus, assisted pump, blower and thimerosal dosing equipment.

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