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Specialized Industrial Wastewater Treatment Equipment & Advanced Oxidation Systems

Complex industrial wastewater streams containing high concentrations of recalcitrant organics, toxic pharmaceutical intermediates, heavy metals, or high salinity cannot be treated by conventional biological processes alone. This product category encompasses specialized high-load treatment units engineered for advanced oxidation, electrochemical catalysis, and heavy metal removal. Designed for integration into heavy chemical, pharmaceutical, electroplating, and textile facilities, these systems break refractory molecular bonds, elevate the biochemical oxygen demand to chemical oxygen demand ratio, and condition harsh effluents for safe biological downstream treatment or strict direct discharge. Sourcing engineers and EPC contractors utilize these specialized units to overcome chemical persistence, satisfy rigid environmental compliance standards, and control long-term operating expenditures.

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Solutions

Refractory Organics Degradation

Hydroxyl radical and catalytic oxidation processes to mineralize persistent ring structures, pharmaceutical residues, and toxic synthetic compounds.

Heavy Metal Sequestration & Precipitation

Targeted chemical and electrochemical reduction units for selective removal of hexavalent chromium, nickel, copper, and zinc from industrial rinses.

High-Salinity & Toxic Effluent Conditioning

Pre-treatment systems designed to neutralize inhibiting toxic loads and enhance biodegradability prior to secondary biological systems.

Product Category

Equipment Type	Core Function	Primary Application	Key Construction Material	Operating Principle
Micro-Electrolysis Reactor	Electrochemical reduction and oxidation; B/C ratio enhancement	High-COD chemical, pharmaceutical, and printing/dyeing wastewater	Cast iron-carbon composite packing with anti-passivation matrix	Galvanic cell corrosion across iron and carbon granules generating active atomic hydrogen and divalent iron ions
Advanced Fenton Oxidation Tower	Catalytic destruction of non-biodegradable refractory organics	Landfill leachate, pesticide wastewater, high-concentration chemical effluent	Stainless steel 316L / FRP with internal heavy fluoropolymer lining	Catalytic decomposition of hydrogen peroxide mediated by iron catalysts to form hydroxyl radicals
Electro-Catalytic Oxidation Unit	Direct and indirect electrochemical destruction of persistent pollutants	High-salinity organic wastewater, persistent pharmaceutical wastewater	Titanium mesh coated with precious metal oxides (Ruthenium-Iridium / Titanium-Platinum anodes)	Direct electron transfer on electrode surfaces and generation of reactive oxygen species
Heavy Metal Precipitation Module	Automated chemical dosing and rapid flocculation-sedimentation	Electroplating rinse water, printed circuit board manufacturing effluent	PVC-U internal piping, PP tanks, or SS304 structural frames	Controlled pH adjustment and sulfide/polymer precipitation for selective metal removal

System Configuration

Reaction Vessels & Towers

Heavy-duty cylindrical tanks engineered with calculated hydraulic retention times, internal baffle configurations, and fluid distribution manifolds to prevent short-circuiting.

Automatic Laboratory Wastewater Treatment Equipment

Automated Dosing & pH Control Skids

Integrated metering pumps, online pH and ORP transmitters, and automated feedback loops for precise acid, alkali, hydrogen peroxide, or coagulant injection.

Laboratory Wastewater Treatment Equipment

Catalyst & Packing Management Systems

Bottom-discharge cleanout hatches, internal support grates, and air-scour backwash headers designed to prevent clogging, compaction, and catalyst passivation.

Treatment Process

Treatment Stage	Target Pollutants	Applicable Equipment	Typical Performance Metric
Primary Reduction & Ring-Opening	Refractory nitro compounds, halogenated hydrocarbons, high color	Micro-Electrolysis Reactor	B/C ratio improvement from less than 0.1 to greater than or equal to 0.3; COD reduction: 30% to 50%
Deep Catalytic Oxidation	Persistent dissolved organics, phenols, cyanides, leachate	Advanced Fenton / Electro-Catalytic Unit	COD removal efficiency: 60% to 85% (Total mineralization to carbon dioxide and water)
Heavy Metal Polishing	Dissolved heavy metal ions (Chromium VI, Copper II, Nickel II)	Heavy Metal Precipitation Module	Effluent heavy metal concentration: less than 0.1 mg/L

Applications

01.

Pharmaceutical & Chemical Synthesis

Elimination of toxic antibiotic residues, reaction solvents, and complex cyclic intermediates prior to biological treatment.

02.

Electroplating & Surface Treatment

Removal of complexed heavy metals and cyanide compounds from metal finishing rinse lines.

03.

Landfill Leachate Treatment

Mineralization of high-concentration humic acids and persistent organic pollutants in mature leachate.

04.

Coal Chemical & Coking Plants

Destruction of high-concentration phenols, thiocyanates, and heterocyclic aromatic compounds.

Technical Specifications

Equipment	Parameter	Specification
Micro-Electrolysis Reactor	Processing Capacity	5–200 m³/h
	Packing Filling Rate	65–75% of bulk volume
	Air-to-Water Ratio for Backwash	5:1–8:1
Advanced Fenton Tower	Reaction pH Range	3.0–4.5, optimized for hydroxyl radical generation
	Hydraulic Retention Time	2.0–4.0 h
	Hydrogen Peroxide Consumption	0.5–2.0 kg per kg COD removed, depending on water matrix
Electro-Catalytic Oxidation System	Current Density	20–80 mA/cm²
	Electrode Life Expectancy	>15,000 operating hours
	Power Consumption	5–15 kWh per kg COD removed

Selection Guide

Water Matrix & Toxicity Profiling

Conduct comprehensive gas chromatography-mass spectrometry analysis to identify specific toxic functional groups, heavy metal interference, and salt concentration.

Biodegradability Index Evaluation

Measure initial biochemical oxygen demand versus chemical oxygen demand. Select micro-electrolysis or catalytic oxidation when the initial B/C ratio is below 0.15 to break down long-chain molecules into biodegradable fragments.

Corrosion & Materials Compatibility Audit

Evaluate chloride ion concentration, operating temperature, and chemical oxidative strength. Mandate titanium electrodes and fluoropolymer linings for high-chloride electrochemical systems.

Pilot Testing & Kinetic Validation

Execute bench-scale or pilot-scale reactor testing to establish accurate kinetic reaction rates, optimal chemical dosages, and sludge generation rates prior to full-scale fabrication.

Manufacturing and Quality Control

Specialized Alloy Welding

Tig welding of titanium, Hastelloy, and specialized stainless steels performed by certified welders utilizing inert gas backing to prevent weld contamination and intergranular corrosion.

Non-Destructive Testing

100% radiographic or ultrasonic inspection of critical pressure-retaining welds and high-pressure chemical vessel seams.

Lining & Anti-Corrosion Verification

Spark testing (high-voltage pinhole detection) applied to all internal fluoropolymer and rubber-lined reaction vessels to guarantee zero-leakage performance under acidic conditions.

Electrical & Control Integration Testing

Full simulation testing of PLC cabinets, automated interlocks, emergency shut-off loops, and power rectifier stability prior to factory dispatch.

Customized

Electrode Array Geometry

Custom sizing and spacing of titanium-based catalytic plates tailored to specific electrical conductivity and current density parameters.

Material Upgrades

Selection of specialized corrosion-resistant metallurgy (e.g., Titanium Gr.2, 254SMO, or titanium-clad steel) to handle aggressive industrial liquor.

Skid Modularization

Multi-tier, heavy-duty structural steel skids pre-assembling reaction towers, dosing pumps, and electrical panels into compact transportable modules.

Control System Architecture

Integration with plant-wide distributed control systems via PROFIBUS, Modbus TCP, or industrial Ethernet configurations.

Our Certificate

FAQ

Q: How does micro-electrolysis improve the biodegradability of refractory industrial wastewater?

A: Micro-electrolysis utilizes iron and carbon elements immersed in wastewater to form countless microscopic galvanic cells. The resulting electrochemical reactions generate nascent hydrogen ions, ferrous ions, and localized electric fields that rupture stable benzene rings, heterocyclic bonds, and long-chain structures, effectively raising the B/C ratio from below 0.1 to over 0.3 for subsequent biological treatment.

Q: What are the primary operating cost drivers for an Advanced Fenton Oxidation Tower?

A: The primary operating expenses are driven by chemical consumption—specifically hydrogen peroxide and acid/alkali reagents for pH adjustment—alongside electrical power for agitation and sludge disposal costs resulting from iron sludge precipitation. Precise automated dosing controllers are integrated to minimize chemical waste.

Q: Why is titanium used as the substrate for electro-catalytic oxidation electrodes?

A: Titanium provides exceptional structural strength, lightweight properties, and natural passivation film formation that resists severe acidic and oxidative degradation. When coated with precious metal oxide catalysts (such as ruthenium-iridium or platinum), titanium acts as an inert, highly conductive substrate capable of enduring thousands of hours of high-current density operations.

Q: Can specialized wastewater treatment equipment handle fluctuating flow rates and pollutant loads?

A: While physical reactors have fixed volume dimensions, peak load fluctuations are managed by incorporating an appropriately sized equalization tank upstream. Variable frequency drives on chemical dosing pumps and automated pH feedback loops dynamically adjust reagent feed rates to match real-time pollutant mass loading.

Q: What measures are taken to prevent catalyst passivation in micro-electrolysis systems?

A: Catalyst passivation—caused by the deposition of iron oxides or suspended solids on packing surfaces—is prevented through periodic high-intensity air-scour backwashing, automated hydraulic flushing cycles, and an optimized granular packing formula designed to maintain continuous surface abrasion.

Q: What quality assurance documentation is provided with customized specialized treatment systems?

A: Each system is delivered with an exhaustive QA package including material test reports for all metals and linings, welding qualification certificates, hydrostatic and pneumatic pressure test records, spark test inspection logs, electrical schematics, and comprehensive operation and maintenance manuals.

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