Environmental Engineering

End-to-end environmental engineering services covering industrial exhaust, industrial wastewater, and workshop air quality—from process design and equipment fabrication to installation, commissioning, and O&M.

≥98%Removal Precious-metal catalysis + molecular sieve adsorption with oxidative regeneration

1:1Pre-Assembly In-house fabrication at Dayi base with cold testing prior to site commissioning

LEL<25%Interlock Concentration monitoring, flame arresters, explosion relief, and waste-heat recovery

3 ScopeGrade-B Certs Water pollution, air pollution, and environmental equipment manufacturing

Qualifications & Engineering Capability

Sichuan Environmental Protection Industry Association Membership Certificate — Environmental Industry Assoc. Member

Sichuan Environmental Pollution Control Engineering Qualification Certificate

Certificate No.: Sichuan Env. Cert. No. 581

Water Pollution Control Grade B: Chemical wastewater, food processing wastewater, and brewing wastewater.
Air Pollution Control Grade B: Particulate matter, flue soot, mineral dust, and volatile organic compounds (VOCs).
Environmental Equipment Manufacturing Grade B: Environmental protection instruments and equipment.

View Corporate Honors & Certifications

Exhaust & Dust Treatment

VOCs Exhaust Treatment

Serving coating, organic synthesis, electronics, and new-energy industries to treat aromatics, esters, ketones, and other organic vapors.

Primary Process: Adsorption concentration + catalytic combustion / RTO

Airflow Range: 2,000–150,000 m³/h per single train
Catalytic Oxidation: VOCs removal ≥ 98%; catalyst light-off temperature 280–350 °C
Adsorption & Heat Recovery: Activated carbon / zeolite molecular sieve concentration with waste-heat recovery for desorption
Safety Controls: LEL < 25% with online concentration monitoring, flame arresters, and explosion-relief interlocks

Acid/Alkali Gas & Odor Control

Serving semiconductor, chemical, electroplating, and wastewater treatment plants for fluorine/chlorine-bearing off-gas and sulfur/nitrogen odors.

Primary Process: Multi-stage wet scrubbing + dry adsorption / bio-deodorization

Target Pollutants: HCl, HF, SO₂, NOx, NH₃, H₂S, and organic sulfur odor compounds
Scrubbing & Demisting: 95%–99.5% acid mist capture with baffle / wire-mesh mist eliminators
Corrosion-Resistant Materials: PP, FRP, or 316L towers and piping matched to stream chemistry
Automated Dosing: pH / ORP monitoring with closed-loop scrubbing liquor replenishment

Fume, Dust & Oil Mist Purification

Serving machining, metallurgy, and powder processing for grinding dust, roasting fumes, oil mist, and welding smoke.

Primary Process: Cyclone pre-separation + pulse-jet baghouse / wet scrubbing

Particulate Control: Outlet particulate concentration ≤ 10 mg/m³
Filtration & Cleaning: PTFE-membrane flame-retardant anti-static media with ΔP-triggered pulse cleaning
Combustible Metal Dust: Wet explosion-proof dust collection for aluminum, magnesium, and reactive metal powders
Auxiliary Protection: Electrostatic oil mist capture; flameless venting and isolation valves per operating hazard

Workshop Control & Water Treatment

Spray Booth & Workshop Environment Control

Serving aerospace, construction machinery, and precision manufacturing—integrating spray booth construction, paint mist capture, workstation ventilation, and noise abatement.

Primary Process: Dry / wet paint mist arrest + acoustic ventilation

Paint Mist Filtration: Dry labyrinth paper / fiberglass media or Venturi wet capture with ≥ 99% overspray arrest
Work-Zone Airflow: 0.3–0.5 m/s uniform downdraft velocity
Acoustic Attenuation: Fan acoustic enclosures, silencers, and vibration isolators limiting noise to ≤ 65 dB(A)
Air Recirculation: Recirculated air splitting and concentration enhancement to downsize end-of-pipe abatement

Industrial Wastewater Treatment

Serving fine chemicals, food & brewing, pharmaceuticals, and research institutes for high-COD organic effluents and mixed laboratory wastewater.

Primary Process: Pre-treatment + anaerobic/aerobic biotreatment + advanced reuse

Pre-Treatment: Fe-C micro-electrolysis / Fenton catalytic oxidation for refractory organics
Biological Treatment: UASB anaerobic digestion + A²/O nitrogen and phosphorus removal
Polishing & Reuse: MBR membrane bioreactor + RO reverse osmosis with reclaimed water loop
Package Form: Above-ground or buried integrated skid-mounted stations sized to flow and load

Solid Waste Reduction & O&M

Covering sludge reduction, adsorbent regeneration, and facility maintenance—providing routine inspections, consumables supply, and compliance support.

Primary Process: Low-temp drying + in-situ regeneration + managed O&M

Sludge Reduction: Closed-loop low-temperature drying reducing sludge and wet filter cake mass by over 60%
Media Regeneration: Hot-nitrogen in-situ desorption of spent activated carbon and spent catalyst reactivation
Facility O&M: RCO / RTO / WWTP inspections, consumables replacement, and online CEMS calibration comparison
Compliance Support: Emission ledger management, environmental emergency plans, and facility hazard audits

Flagship Engineering Projects

Integrated Organic Exhaust Gas Treatment System

120,000m³/h Airflow

Organic Exhaust Adsorption Concentration & Catalytic Combustion Project

Built for large-scale coating and organic synthesis workshops. Combines multi-stage pre-treatment, adsorption concentration, and RCO catalytic oxidation with waste-heat recovery for cyclic desorption and regeneration.

Acid Exhaust Treatment Piping and Scrubbing Facility

20,000m³/h Airflow

Multi-Stage Acid Exhaust Scrubbing & Purification Project

Built for chemical manufacturing and acid pickling lines. Features two-stage counter-current packed scrubbers, high-efficiency demisters, automated pH/ORP dosing, and corrosion-resistant collection ducting.

Spray Booth Ventilation and Paint Mist Purification Installation Site

3,200m³/h Airflow

Spray Booth Construction & Exhaust Abatement Project

Built for precision equipment manufacturing workshops. Integrates an enclosed spray booth, clean supply/exhaust ventilation, dry paint mist filtration, activated carbon polishing, and explosion-proof lighting interlocks.