Operating Principle
The modular wastewater treatment system operates based on a combination of automatic control, intelligent management, flocculation separation, and pressure dewatering. The working process consists of five key stages: automatic reagent preparation, wastewater control and intelligent dosing, flocculation and flow equalization, sludge and water thickening and separation, and pressure dewatering.

1. Stage of automatic reagent preparation

Automatic reagent dissolution:

• The automatic dosing component dissolves reagents according to a set program
• Solid or liquid flocculants are prepared in a solution of a certain concentration
• Stored in a reagent tank for use

Reagent readiness:

• Maintaining a stable concentration of the reagent solution
• Ensuring the dosing system is ready for immediate delivery
• Preparation for subsequent intelligent dosing

2. Stage of wastewater control and intelligent dosing

Wastewater lifting:

• Wastewater is pumped by a sludge pump from the collection tank to the equalization well
• Continuous and stable inflow of wastewater into the treatment system is ensured
• Pump flow is adjusted according to needs

Automatic control:

• The automatic control component measures wastewater concentration, turbidity, pH, and other key parameters in real time
• Control data is transmitted to the intelligent control terminal in real time
• Continuous monitoring and dynamic tracking of water quality changes

Intelligent dosing management:

• The intelligent control terminal analyzes the received water quality data
• Calculates the optimal reagent dose based on wastewater concentration, volume, and other parameters
• Sends precise dosing commands to the automatic dosing component

Precise dosing:

• The automatic dosing component performs the corresponding dosing according to terminal commands
• The reagent dose is precisely controlled, avoiding overuse or shortage
• Reagent and wastewater are pre-mixed in the pipeline or equalization well

Preliminary flocculation:

• The reagent (flocculant) fully contacts the wastewater
• Suspended solids, colloids, etc. in the wastewater begin to flocculate
• Microflocs form, creating conditions for subsequent treatment

3. Stage of flocculation and flow equalization

Flow equalization in the well:

• Wastewater after dosing is retained in the equalization well
• The equalization well ensures a uniform and stable water flow, eliminating turbulence
• Favorable hydraulic conditions are created for entry into the thickener

Complete flocculation reaction:

• Reagent and wastewater continue to react in the equalization well
• Microflocs gradually grow and compact
• The efficiency of subsequent sludge and water separation increases

4. Stage of sludge thickening and separation

Entry into the thickener:

• After equalization in the well, wastewater flows by gravity or pump into the thickener tank
• The thickener provides sufficient space and time for sedimentation
• The scientific design of the tank promotes sludge and water separation

Mixing:

• The mixing device slowly stirs the wastewater
• Promotes further growth and compaction of flocs
• Mixing intensity is moderate: promotes flocculation but does not destroy flocs

Sludge and water separation:

• Under gravity, the flocculated sludge gradually settles
• High-density sludge settles at the bottom of the tank
• Clean water rises to the upper part of the tank

Sludge thickening:

• Settled sludge is further thickened at the bottom of the tank
• Sludge moisture decreases, volume reduces
• Thickened sludge is ready for subsequent dewatering

Clean water overflow for reuse:

• The upper layer of clean water automatically overflows through the overflow device
• Clean water flows by gravity into the clean water storage tank
• Clean water can be reused or discharged according to standards
• Implementation of water resource saving and recirculation

5. Dewatering stage under pressure

Sludge transportation:

• Thickened sludge is pumped by the filter press feed pump from the bottom of the thickener
• Delivered to the dewatering device (chamber filter press, belt press, etc.)
• Continuous and stable sludge supply is ensured

Pressure dewatering:

• Sludge is subjected to pressure in the dewatering device
• Under high pressure, moisture is squeezed out of the sludge
• Filtrate (clean water) passes through the filter cloth and is drained, it can be returned for treatment or discharged

Drying and forming:

• After pressure dewatering, the moisture content of the sludge is significantly reduced (usually to 60-80%)
• Dewatered sludge takes the form of a cake that can be stored
• A dry pile is formed, convenient for subsequent transportation and disposal

Sludge disposal:

• Dried cake is unloaded from the dewatering device
• Can be packed in bags, loaded onto transport
• Sent to a landfill, composting plant, or incineration plant for final disposal
• Implementation of volume reduction, neutralization, and resource utilization of sludge