Wastewater treatment system of Minh Anh washing factory

Investor: Minh Anh International Joint Stock Company



My Hao District, Hung Yen Province

Wastewater type

Washing and grinding wastewater


2.000 m3/ day.night


Wastewater -> Collection -> Centrifugal Separation -> Equalization -> Coagulation -> Sedimentation 1 -> Aerobic -> Sedimentation 2 -> Storage -> Filtration -> Reuse

Standard after treatment

QCVN 40:2011/BTNMT, column A

Completed time


Project explanation

Centrifugal separator: Mechanical treatment device to remove solids in wastewater, in order to protect the equipment and minimize the pollutant load of the waste source before entering the treatment system. biophysics. With a comb slot size of 2mm, it will retain garbage, small threads in wastewater, residue, etc., which are left behind the screen.

Equalization tank: Stabilize flow, contaminant concentration, pH. Preliminary ventilation to avoid anaerobic decomposition causing odors.

Coagulation tank to create flocculation: The coagulant added to the wastewater includes alum PAC and Polymer. Under the effect of this chemical and the slow speed agitator motor system, the tiny flocs from the reaction tank will move, collide, stick and form large flocs in the flocculation tank. many times higher than the initial residue, creating favorable conditions for the settling process in the settling tank.
Sedimentation tank 1: Wastewater from the flocculation tank is distributed into the water distribution area of ​​the clarifier. Water and floc move through the water distribution zone into the settling zone of the settling tank by gravity settling method.

The flocs have a larger volume than water, so they settle themselves in the sediment storage area of ​​the settling tank. Clean water is collected at the top of the serrated trough of the settling tank and flows into the aerobic. The physicochemically settled sludge is pumped to the sludge compression tank for treatment.

Aerobic tank:  Effective of pollutant treatment is high (98%) and stable, treatment efficiency does not change when pollutant load (COD) increases by 20% and flow changes by 10-15%; The ability to reduce Nitrogen and Phosphorus is up to 95% when operating according to specifications.

Sedimentation tank 2:  Settling tank is designed for the purpose of settling solids in the form of suspension and suspension, eliminating odors of wastewater in order to improve the settling efficiency of residues in wastewater.

Disinfection tank:  Contact with Chlorine to completely destroy Coliforms and other disease-causing germs, the treated water meets environmental standards and is discharged into the receiving source.

Sludge compaction tank:  The amount of sludge generated in physico-chemical settling tank 1 and physico-chemical settling tank 2 and biological settling tank is brought to the sludge compaction tank and pumped to the sludge press assembly.

Project image

Customer testimonial

ARES's team of experts have a very professional, dedicated working style and know how to listen to customers' opinions to bring the best environmental solutions. Wish ARES growing stronger and stronger!

Mr Hoang AnhVice Director

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