Company Profile
AA SS AQUA HITECH CO., LTD. was established in 2005 in Shenzhen,
China. It is a leading technology enterprise specialized in the
design, manufacturing, installation, commissioning and maintenance
of technical solutions for high-difficulty industrial wastewater
treatment projects.
Since its establishment, the company has been fully committed to
the research of treatment technologies for high-difficulty and
refractory industrial wastewater, wastewater recycling and reuse
technologies, and wastewater zero-discharge technologies. It
strives to achieve low project costs, high outputs and optimization
of total social resources.
The water treatment technology solutions and achievements developed
by the company have been widely applied in multiple fields of
high-difficulty and refractory organic wastewater treatment,
including pharmaceutical wastewater, chemical wastewater, pesticide
wastewater, laboratory wastewater, coal chemical wastewater,
petrochemical wastewater, breeding wastewater, slaughterhouse
wastewater, semiconductor wastewater, printing and dyeing
wastewater, coating wastewater, landfill leachate, food processing
wastewater, mechanical processing wastewater and domestic
wastewater.
Adhering to the business philosophy of leading technology,
first-class quality and sustainable service, the company endeavors
to provide customers with strong technical support and realize the
sustainable development and utilization of water resources.
The electrochemical wastewater treatment equipment independently
developed and invented by our company can achieve a removal rate of
over 99% for COD and ammonia nitrogen in refractory industrial
organic wastewater featuring high salinity, high toxicity, high
concentration and strong acidity or alkalinity. It has solved the
long-standing problem of high-difficulty and complex wastewater
treatment in the industrial wastewater treatment industry,
representing a significant breakthrough in the treatment scope,
methods and effects of high-difficulty and complex industrial
wastewater.
CQDHX SERIES EO Electrochemical Advanced Oxidation Technology
Cutting-edge Electrode Manufacturing Technology
Over a 15-year period starting from 2010, we have been dedicated
exclusively to the R&D, manufacturing and application of
electrodes. Having completed more than 3,000 verification tests on
electrode materials and manufacturing processes, as well as over
5,000 experiments on different types of highly complex wastewater,
we have tailored the compositions of electrode substrates, surface
materials and the deposition conditions of electrode surfaces by
integrating the characteristics of various highly complex
wastewater types. This has enabled us to achieve optimal
performance in treating different categories of highly complex
wastewater.
The CQDHX Series Electrode Modules are capable of meeting the
requirements for treating highly complex industrial wastewater
under extreme conditions. They can effectively remove organic
matter (COD), ammonia nitrogen, toxic substances, bacteria,
chromaticity, phosphorus and various heavy metals from refractory
industrial organic wastewater characterized by high salinity, high
toxicity, high concentration and strong acidity or alkalinity.
Working Mechanism of CQDHX SERIES EO Electrode Modules
Electrochemical oxidation is a technology that utilizes an applied
electric field to drive chemical reactions for pollutant
degradation. Its core reaction occurs at the anode of the
electrolytic cell, and the operating mechanisms are primarily
categorized into two types: direct oxidation and indirect
oxidation, which often function synergistically.
Direct Oxidation Mechanism: Pollutant molecules migrate to and adsorb onto the anode
surface. Subsequently, the anode, acting as an electron acceptor,
directly extracts electrons from the pollutant molecules, causing
their oxidative decomposition. This process is controlled by the
mass transfer rate and relies on the catalytic activity and
adsorption properties of the anode material, exhibiting a certain
degree of selectivity towards different pollutants.
Mechanism of Indirect Oxidation: The anode does not directly oxidize pollutants. Instead, it
generates highly oxidizing agents by electrolyzing components
within the solution. These agents then diffuse into the bulk
solution and carry out homogeneous oxidation of the pollutants.
Depending on the type of oxidants generated, the main pathways can
be categorized as follows:
Hydroxyl Radical Pathway | At the surface of an anode with high oxygen evolution
overpotential, water or hydroxide ions are electrochemically
oxidized to generate hydroxyl radicals. Hydroxyl radicals possess
an extremely high oxidation potential and can non-selectively
oxidize the vast majority of organic compounds, ultimately
mineralizing them into carbon dioxide, water, and small inorganic
molecules. This pathway achieves the most thorough degradation. |
Reversible Redox Mediator Pathway | Specific metal ions in the electrolyte are oxidized at the anode to
higher valence states, forming strong oxidants (such as high-valent
metal ions). These oxidants diffuse into the solution to oxidize
pollutants and, after being reduced to their initial valence
states, can return to the anode surface to be re-oxidized, thus
forming a cycle. |
Other Oxidant Pathways | Through electrode design and regulation of reaction conditions,
hydrogen peroxide can be generated at the cathode, or ozone can be
produced at specific anodes. Hydrogen peroxide can combine with
ferrous ions to form an electro-Fenton system, which subsequently
generates hydroxyl radicals, thereby enhancing oxidation
efficiency. |
Electrochemical oxidation achieves pollutant degradation through
two main mechanisms: electron transfer at the anode surface and
the in-situ generation of highly oxidizing species. In practical
applications, particularly for complex wastewater systems, direct
and indirect oxidation often work synergistically. By optimizing
electrode materials and process parameters, efficient and advanced
treatment of organic pollutants can be achieved.
Technical Advantages
High Salinity Tolerance: It can effectively remove COD and ammonia nitrogen from
unsaturated saline wastewater with a removal rate of up to 99%.
High Toxicity Tolerance: It can effectively remove COD and ammonia nitrogen from highly
biotoxic wastewater with a removal rate of up to 99%, while
efficiently eliminating the biological toxicity of the wastewater.
High Concentration Tolerance: It can effectively remove COD and ammonia nitrogen from
high-concentration organic industrial wastewater with a COD level
of ≤ 450,000 mg/L, achieving a removal rate of up to 99%.
Strong Acid-Alkali Tolerance: It can effectively remove COD and ammonia nitrogen from strongly
acidic or alkaline wastewater with a pH value ranging from 1 to 11,
with a removal rate of up to 99%.
High Safety: The equipment operates at a DC voltage ranging from 3 to 15V,
causing no harm to the human body.
No chemical agents are added during wastewater treatment, and no
residues or solid wastes are generated.
The electrode modules operate without scaling or clogging.
The equipment achieves a removal rate of 75–100% for high ammonia
nitrogen, cyanide breakdown, decolorization, and other pollutants.
No pH adjustment is required for incoming wastewater, which
significantly saves on acids, alkalis, labor costs, and floor
space, while avoiding secondary pollution.
No water dilution is needed to reduce the salinity of incoming
wastewater, decreasing the system’s treatment load and conserving
resources.
No water dilution is needed to reduce the COD concentration of
incoming wastewater, decreasing the system’s treatment load and
conserving resources.
The equipment features a small footprint, occupying approximately
2% of the floor space required by traditional processes of the same
capacity.
The equipment has no special environmental requirements and can be
installed in well-ventilated, rainproof, non-explosion-proof areas.
The equipment operates with no noise and zero discharge of
secondary pollutants.
It features fully automated operation, which is simple, safe, and
does not require on-site personnel monitoring.
Equipment Specifications: 0.5T–1000T/h
Electrochemical Oxidation Equipment for Treating Common Pollutants
Aromatic Compounds | BTEX (Benzene,, Ethylbenzene, Xylenes): Benzene, Toluene,
Xylenes (o-, m-, p-), Ethylbenzene Compounds: Monohydric Phenols: Phenol, Cresols (o-, m-, p-) Chlorophenols: Monochlorophenol, Dichlorophenol,
Pentachlorophenol Nitrophenols: Nitrophenol, Trinitrophenol Alkylphenols: Nonylphenol, Octylphenol Polycyclic Aromatic Hydrocarbons (PAHs): 2-Ring: Naphthalene 3-Ring: Anthracene, Phenanthrene 4-Ring: Pyrene, Chrysene 5-Ring and above: Benzo[a]pyrene, Benz[a]anthracene,
Benzo[b]fluoranthene Aromatic Amines: Aniline, Methylaniline Benzidines: Benzidine, 3,3'-Dichlorobenzidine Nitroaromatic Amines: Nitroaniline, 2-Naphthylamine Other Aromatics: Polychlorinated Biphenyls (PCBs) Bisphenol A (BPA) Benzofused Heterocycles: Benzofuran, Dibenzofuran Aromatic acids such as Benzoic acid, Salicylic acid, etc. |
Halogenated Organic Compounds | Halogenated Aliphatic Hydrocarbons: Chloromethanes: Chloroform, Carbon Tetrachloride,
Dichloromethane, Chloromethane Chloroethenes: Vinyl Chloride, Dichloroethylene (cis/trans),
Trichloroethylene, Tetrachloroethylene Bromomethane, Iodomethane Halogenated Aromatic Hydrocarbons: Chlorobenzenes: Chlorobenzene, Dichlorobenzene (p-, o-, m-),
Hexachlorobenzene Bromobenzene, Fluorobenzene Halogenated Phenols: See Chlorophenols, etc., under Aromatic
Compounds - Phenolic Compounds. Persistent Halogenated Organic Compounds: Polychlorinated Biphenyls (PCBs) Dioxins and Furans: Polychlorinated Dibenzodioxins (PCDDs) /
Dibenzofurans (PCDFs) Per/Polyfluoroalkyl Substances (PFAS): Perfluorooctanoic Acid
(PFOA), Perfluorooctanesulfonic Acid (PFOS) Brominated Flame Retardants: Polybrominated Diphenyl Ethers
(PBDEs) Organochlorine Pesticides: DDT, Hexachlorocyclohexane (HCH,
Lindane), Chlordane, Mirex |
Oxygen-Containing Organic Compounds | Alcohols, Phenols, and Ethers: Alcohols: Methanol, Ethanol, Isopropanol, Ethylene Glycol,
Glycerol Ethers: Methyl tert-butyl MTBE, Diethyl , Tetrahydrofuran,
Dioxane Aldehydes, Ketones, and Quinones: Aldehydes: Formaldehyde, Acetaldehyde, Acrolein Ketones: Butanone, Cyclohexanone, Methyl isobutyl ketone Quinones: Benzoquinone, Naphthoquinone Carboxylic Acids and Esters: Low Molecular Weight Carboxylic Acids: Formic acid, Acetic
acid, Propionic acid, Oxalic acid, Citric acid Aromatic Carboxylic Acids: Benzoic acid, Phthalic acid Esters: Ethyl acetate, Butyl acetate, Acrylate esters Phthalate Esters: Dibutyl phthalate (DBP), Di(2-ethylhexyl)
phthalate (DEHP) Lactones: γ-Butyrolactone |
Nitrogen-Containing Organic Compounds | Amines:
Aliphatic amines: Ethylenediamine
Aromatic amines: Already listed under aromatic compounds
Quaternary ammonium salts: Cetyltrimethylammonium bromide Nitriles:
Acetonitrile, Acrylonitrile, Adiponitrile Nitro/Nitroso Compounds:
Aliphatic nitro compounds: Nitromethane
Aromatic nitro compounds: Nitrobenzene, Dinitrotoluene,
Trinitrotoluene (TNT)
Nitrosamines: N-Nitrosodimethylamine Amides:
Formamide, N,N-Dimethylformamide (DMF), Acrylamide Nitrogen-containing heterocycles:
Single heterocycles: Pyridine, Pyrrole, Imidazole
Fused rings: Indole, Carbazole, Quinoline, Isoquinoline
Alkaloids
Amino acids: Glycine, Alanine, etc. |
Synthetic Polymers/Macromolecules | Synthetic Polymers/Macromolecules Water-Soluble Polymers: Polyvinyl Alcohol Polyethylene Glycol Polyacrylamide (flocculant) Polyacrylic Acid (dispersant) Polymeric Surfactants: Alkylphenol Ethoxylates (APEOs, e.g., Nonylphenol Ethoxylates) Fatty Alcohol Ethoxylates Synthetic Dyes/Pigments: Azo Dyes, Anthraquinone Dyes, Reactive Dyes, Disperse Dyes, etc. Plastic Monomers and Oligomers: Caprolactam (Nylon monomer), Bisphenol A (Epoxy resin/PC monomer),
Terephthalic Acid |
Natural Degradation Products | Humic Substances: Humic Acid: Macromolecular, black, acidic, insoluble in water
but soluble in alkali. Fulvic Acid: Smaller molecular weight than humic acid,
yellowish-brown color, more acidic and water-soluble. Humin: Inert fraction insoluble in water at any pH. Lignin Degradation Products: Various phenols, aromatic acids, aromatic aldehydes (e.g.,
vanillin, syringaldehyde). Carbohydrate Degradation Products: Sugars: Monosaccharides such as glucose, xylose, etc. Protein/Fat Degradation Products: Organic Acids: Volatile fatty acids (acetic acid, propionic
acid, butyric acid, valeric acid, isovaleric acid, etc.). Higher Fatty Acids: Long-chain fatty acids. Amino Acids: See Nitrogen-Containing Organic Compounds. Natural Toxins/Secondary Metabolites: Aflatoxins (may originate from moldy waste), microbial toxins, etc. |
PFAS | N-EtFOSAA,PFDA,N-MeFOSAA,N-MeFOSE,PFOA ,8:2
FTSA,PFDA,PFPrA,PFOS,PFOA,6:2 FTSA,FOSA,PFHpA,PFHpS,4:2
FTSA,PFHxA,PFHxS,HFPO-DA (GenX),PFPeS,PFBS,PFBA,HFPO-DA ,TFA |
Application Scenarios:
Treatment of Refractory and Toxic Pharmaceutical Wastewater
Treatment of Refractory and Toxic Chemical Industry Wastewater
Treatment of Refractory and Toxic Pesticide Wastewater
Treatment of Refractory and Toxic Laboratory Wastewater
Treatment of Refractory and Toxic Coal Chemical Industry Wastewater
Treatment of Refractory and Toxic Petrochemical Wastewater
Treatment of Aquaculture Wastewater
Treatment of Slaughterhouse Wastewater
Treatment of Refractory and Toxic Semiconductor Industry Wastewater
Treatment of Refractory and Toxic Dyeing Wastewater
Treatment of Refractory and Toxic Painting/Paint Coating Wastewater
Treatment of Refractory and Toxic Landfill Leachate
Treatment of Food Processing Wastewater
Treatment of Refractory Machining Wastewater
Treatment of Domestic Sewage
