Process Flow for Linen Washing Wastewater Treatment
Wastewater from laundry operations in hotels and hospitals is characterized by high foam content,coloration, and oiliness.We implement a three-stage enhanced treatment process:
First is atomization treatment.Wastewater enters the screening system through grates,
where fibrous materials are intercepted.The wastewater then flows into the coagulation-air flotation system—the equipment behind me—where specialized chemicals are added
to ensure removal of suspended solids from the water.
After entering the equipment,the wastewater undergoes flocculationunder the action of the chemicals.Then, using microbubbles,the suspended solids are floated to the surface.
We use a skimming system to remove them,achieving solid-liquid separationand ensuring clear effluent.The second stage is biological treatment.We employ hydrolysis-acidification
combined with biological contact oxidationfor treatment.The primary challenge in this stage
is treating detergent residues and organic matterfrom laundry wastewater.
Biological contact oxidation and hydrolysis-acidificationdecompose organic compounds.
Under the action of oxygen-consuming agents,pollutants are removedto ensure stable effluent quality.Additionally, we implement tertiary treatment:For enhanced treatment, if effluent exhibits color,we will implement additional stepsby incorporating activated carbon adsorption and advanced oxidation processesto ensure stable compliance with effluent color standards.
Specifically for laundry wastewater,we will conduct:First stage: atomization treatmentSecond stage: biochemical treatmentThird stage: biological enhancement treatmentto guarantee consistent compliance of our wastewater.
