Turning turbidity into clarity - A key step and core equipment in the pretreatment of industrial wastewater

Before industrial wastewater enters the biochemical system, it must undergo pretreatment to remove suspended solids, oils and macromolecular substances, creating a stable and suitable living environment for subsequent microorganisms. The effect of pretreatment directly determines the success or failure of the entire sewage treatment system.

Step 1: Balance the water quality and quantity

Core equipment: Regulating tank

Function: In industrial production, the drainage is uneven. The regulating tank can collect and mix water at different times, making the water quality and quantity uniform and stable, and avoiding impact on subsequent treatment units.

Step 2: Separate the suspended solids from the oil

Core equipment: Air flotation machine

Function: By generating a large number of fine bubbles, they adhere to suspended particles (such as SS) and oils (such as animal and vegetable oils) in the wastewater, forming a "bubble-particle" complex. Due to its density being less than that of water, it rises rapidly, thereby achieving solid-liquid or liquid-liquid separation. It is the key to pretreatment in industries such as food, slaughtering, and petrochemicals.

3. Step 3: Sedimentation and separation

Core equipment: Inclined tube sedimentation tank

Function: By taking advantage of the principle of gravitational sedimentation and installing inclined tube assemblies in the sedimentation zone, the sedimentation area is significantly increased, the sedimentation efficiency is enhanced, and fine suspended particles and chemical flocs in the water are effectively removed.

4. Step 4: Sludge dewatering

Core equipment: Screw press sludge dewatering machine

Function: Pretreatment and biochemical treatment will produce a large amount of sludge. The screw press utilizes the principle of screw extrusion to continuously and efficiently dewater sludge, transforming the flowing sludge into mud cakes with a lower moisture content. This significantly reduces the volume of sludge, facilitating subsequent transportation and treatment.

Central Oasis Integrated Solution

For small and medium-sized or decentralized sewage treatment needs, we offer integrated sewage treatment equipment, which efficiently integrates the above-mentioned multiple pretreatment units and core MBR membrane bioreactors, anaerobic towers, etc. It has significant advantages such as small footprint, quick installation, and stable treatment effect.