Product Overview
Chlory’s Acid Wash Wastewater Zero Discharge System is a dedicated closed-loop treatment solution tailored for high-corrosive pickling wastewater generated in metal processing, surface treatment, steel and related industries. Traditional pickling wastewater treatment usually adopts neutralization and sedimentation processes, which suffer from excessive chemical consumption, massive sludge output, waste of residual acid and valuable heavy metals, as well as high operating costs and hidden environmental risks. Our system integrates mature separation, concentration and resource recovery technologies to realize full wastewater recycling, effective acid and metal recovery, and complete zero liquid discharge (ZLD). It not only helps enterprises meet strict environmental protection discharge standards, but also converts wastewater into reusable production resources, striking a balance between environmental compliance and economic benefits.
Industry Pain Points & Solution Orientation
Pickling wastewater features strong acidity, high salinity, complex components, abundant suspended solids and heavy metal ions, bringing multiple challenges to conventional treatment:
1. Severe corrosion to equipment, short service life of ordinary treatment facilities;
2. Large consumption of alkaline chemicals for neutralization, producing a large amount of hazardous sludge and secondary pollution;
3. Valuable free acid and metal substances in wastewater cannot be recycled, causing serious resource waste;
4. Discharge standards become increasingly stringent, and conventional processes struggle to meet long-term regulatory requirements.
Aiming at the above pain points, this system abandons the simple "end-of-pipe treatment" mode. It adopts the design concept of treatment + resource recycling + zero discharge, builds a full-process integrated process, thoroughly solves the discharge problem of pickling wastewater, and maximizes the reuse rate of water resources and recyclable materials.
Core Process Flow
We adopt a modular combined process to ensure stable operation and efficient treatment. The whole process is divided into four core links to form a fully enclosed circulating system:
1. Pre-treatment Section
Remove large-particle suspended solids, oil stains and partial colloidal impurities through filtration and pH fine adjustment. Protect subsequent deep treatment units from blockage and corrosion, and stabilize water quality for follow-up processes.
2. Acid & Metal Recovery Section
Adopt professional separation technology to selectively recover free acid and heavy metal ions in wastewater. The recovered acid reaches the standard for production reuse and can be directly returned to the pickling process; recycled metal substances can be comprehensively utilized to create additional benefits.
3. Deep Purification & Concentration Section
After multi-stage filtration and desalination treatment, the water quality is further purified. Most clean water is recycled to production lines such as workshop cleaning and process water supply. The concentrated high-salt liquid enters the solid-liquid separation unit.
4. Zero Discharge Terminal Treatment
The concentrated waste liquid is processed by evaporation and drying units. The final output is solid residue with extremely low moisture, which is disposed of in compliance with regulations. No liquid wastewater is discharged outside, achieving true zero liquid discharge.
Product Core Advantages
1. 100% Zero Liquid Discharge, Full Compliance
The closed-loop process completely eliminates liquid effluent, fully adapts to the strictest local environmental protection policies, and completely avoids the risk of penalty caused by excessive discharge.
2. Efficient Resource Recycling, Significant Cost Reduction
Realize the dual recovery of waste acid and water resources. The recovered acid and reclaimed water can be reused on the production line, greatly cutting the procurement cost of new acid and industrial water. Recycled metal by-products can also bring extra economic income.
3. Strong Corrosion Resistance & Stable Long-term Operation
Key equipment is made of special anti-corrosion materials, targeting the strong corrosiveness of pickling wastewater. The system runs stably for a long time, with low failure rate and extended service life.
4. Modular Design, Flexible Deployment
Standard modular structure, small floor area, convenient on-site installation and layout. It supports customized design according to customer’s daily water volume, water quality characteristics and site conditions, suitable for large, medium and small pickling production lines.
5. Intelligent Automatic Control, Low Labor Cost
Equipped with an intelligent operation and control system, it realizes automatic water quality monitoring, reagent adding, process switching and fault alarm. It supports unattended operation, effectively reducing manual operation and management costs.
6. Low Secondary Pollution & Green Environmental Protection
Compared with traditional neutralization processes, it drastically reduces sludge production. The whole process is environmentally friendly, with no secondary pollution, conforming to the green production development trend of industrial enterprises.
Application Scenarios
This system is widely applicable to industries and production links that produce pickling wastewater:
- Steel rolling, steel structure pickling workshops
- Hardware, electromechanical metal surface pickling & derusting processes
- Galvanizing, electroplating pre-treatment pickling procedures
- Stainless steel, alloy material processing wastewater treatment
- All industrial scenarios with high-acid wastewater treatment and zero discharge requirements
On-site Project Case
1. All pickling wastewater of the factory is treated internally, with zero liquid discharge all year round, and continuously meets environmental protection inspection standards;
2. The comprehensive reuse rate of water resources exceeds 95%, cutting the enterprise’s industrial water consumption by a large margin;
3. The recovery rate of effective waste acid is high, directly reducing the enterprise’s annual procurement cost of pickling acid;
4. The system operates stably for a long time, with simple daily maintenance and low overall operating cost, winning high recognition from customers.
Service Support
Chlory provides one-stop full lifecycle services for this product:
- Pre-sales: On-site survey, customized process design and solution formulation;
- In-sales: Integrated services including equipment production, transportation, installation, commissioning and personnel training;
- After-sales: Long-term technical support, regular equipment maintenance, spare parts supply and system upgrade services.
