AA SS AQUA HITECH CO., LTD.
| Processing volume | 5 ~ 5000 m³/day (modular parallel operation) |
| Removal rate ≥90%, colorless or light-colored transparent | It can meet the corresponding emission standards |
| Supply Ability | 5 sets/month |
| effluent COD | Removal rate 70%~99% |
| Water color | Removal rate ≥90%, colorless or light-colored transparent |
| Payment Terms | L/C,T/T |
| Ammonia nitrogen in effluent | Removal rate 80%~99% |
| Delivery Time | 20 work days |
| Operating voltage | 3 ~ 15 V (DC, safe voltage) |
| Water-producing animal and vegetable oils | ≤5~10 mg/L (removal rate ≥90%) |
| Installed power | 5 ~ 400 kW (depending on water quality and treatment objectives) |
| Model Number | CQDHX |
| Place of Origin | China |
| Brand Name | aa ss |
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Product Specification
| Processing volume | 5 ~ 5000 m³/day (modular parallel operation) | Removal rate ≥90%, colorless or light-colored transparent | It can meet the corresponding emission standards |
| Supply Ability | 5 sets/month | effluent COD | Removal rate 70%~99% |
| Water color | Removal rate ≥90%, colorless or light-colored transparent | Payment Terms | L/C,T/T |
| Ammonia nitrogen in effluent | Removal rate 80%~99% | Delivery Time | 20 work days |
| Operating voltage | 3 ~ 15 V (DC, safe voltage) | Water-producing animal and vegetable oils | ≤5~10 mg/L (removal rate ≥90%) |
| Installed power | 5 ~ 400 kW (depending on water quality and treatment objectives) | Model Number | CQDHX |
| Place of Origin | China | Brand Name | aa ss |
| High Light | electrochemical wastewater treatment equipment for food processing ，food processing wastewater treatment system ，electrochemical wastewater equipment with warranty | ||
I. Product Overview
Food processing wastewater originates from numerous sub-sectors, including slaughtering and meat processing, dairy products, brewing (beer/baijiu/huangjiu), beverage production, grain and oil processing, sugar refining, starch production, monosodium glutamate/yeast production, aquatic product processing, pickling and canning, etc. It is a typical type of wastewater with large water volume and high pollution load in the light industry sector. Its water quality characteristics are as follows: high organic matter concentration (COD is usually 800~10000 mg/L, and some high-concentration process wastewater can reach over 20000 mg/L), containing a large amount of biodegradable organic matter (protein, fat, starch, sugar, cellulose, etc.), and also containing high concentrations of suspended solids (SS), grease/vegetable oil (FOG), ammonia nitrogen, and total phosphorus; the wastewater generally has good biodegradability (B/C is usually 0.3~0.6), but there are obvious inhibitory problems—high concentration of grease coats the activated sludge, leading to mass transfer obstruction; high salinity (pickled/sauce wastewater) inhibits microbial activity; intermittent drainage causes hydraulic load shocks; high SS causes blockage of the biological system and sludge bulking; the wastewater often contains food additive residues, pigments, and disinfectant residues, which have a certain inhibitory effect on microorganisms.
Traditional treatment routes for food processing wastewater typically follow a process of "physical pretreatment (grid/screen/oil separator) → flotation/coagulation sedimentation → anaerobic + aerobic biological treatment." However, this approach faces several challenges in actual operation: Incomplete removal of grease/suspended solids—even after oil separation and flotation, emulsified oil and finely dispersed oil (50~200 mg/L) remain. High concentrations of suspended solids (SS) entering the biological system accumulate and coat the sludge over time, leading to deterioration of sludge settling performance and decreased aeration efficiency. High SS causes blockage in the biological system—wastewater from slaughterhouses, starch processing, and sugar refining contains large amounts of organic suspended solids, which are difficult to remove completely by conventional sedimentation, causing anaerobic/aerobic systems to face packing blockage and difficulties in sludge removal. High-salt food wastewater (pickled, sauce, soy sauce, etc.) inhibits biological processes—when the salt content (Cl⁻/Na⁺) reaches 2%~5%, the osmotic pressure of conventional activated sludge becomes unbalanced, and the COD removal rate decreases significantly. Seasonal/intermittent drainage makes it difficult for the biological system to operate stably—food processing is often seasonal (pressing season, fruit processing season) or intermittent, making maintenance and re-establishment of the biological system difficult during winter/shutdown periods. The system suffers from several challenges: long start-up and acclimatization periods; and issues with effluent color and disinfection. Wastewater from brewing, soy sauce, and fruit juice production contains high levels of pigments, resulting in persistently high color even after biochemical treatment. Food wastewater also presents microbial indicators such as coliform bacteria, requiring large doses of disinfectants with traditional methods.
This system employs electrochemical oxidation technology, integrating electro-oxidation degradation with electrocoagulation/electroflotation, making it particularly suitable for the characteristics of food processing wastewater.
For high-concentration organic wastewater (slaughterhouse, brewing, etc.), direct anodic oxidation and electrocatalysis generate hydroxyl radicals (·OH) to directly mineralize dissolved organic matter (proteins, sugars, organic acids, etc.), achieving a COD removal rate of 60%–85%, creating low-load, stable-quality influent conditions for subsequent anaerobic/aerobic systems.
For high-salt pickling/sauce wastewater, electrochemistry is not inhibited by high salt content; Cl⁻ in the salt can be converted into active chlorine to enhance oxidation efficiency, allowing direct treatment of high-salt food wastewater before evaporation or discharge.
The entire process consumes only electricity. A small amount of electrolyte (such as salt, which is very low in cost) can be added to assist in conduction. It does not introduce harmful chemical flocculants (replacing PAC/PAM) and does not produce a large amount of chemical sludge. The equipment can be operated intermittently and is ready to use immediately, making it perfectly suited to the seasonal production patterns of food processing.
II. Difficulties in food processing wastewater treatment and solutions of this equipment
|
Address the difficulties |
Electrochemical solutions |
|
After oil-water separation and flotation, residual emulsified oil and finely dispersed oil (50~200 mg/L) enter the biological system and coat the sludge, leading to deterioration of sludge settling performance and decrease in aeration efficiency. |
Electrochemical demulsification and oil removal—under the action of an electric field, emulsified oil droplets are destabilized and aggregated, while being directly oxidized and decomposed at the anode. The oil removal rate is ≥90%, and the oil content in the effluent is ≤5~10 mg/L, completely eliminating the interference of oil on the biological system. |
|
High-salt pickling/sauce/soy sauce wastewater (TDS 2%~5%) and high osmotic pressure lead to the death of a large number of activated sludge microorganisms. |
Electrochemical processes are not inhibited by high salt concentrations—the higher the Cl⁻ concentration in the salt, the higher the yield of active chlorine and the stronger the oxidation efficiency, allowing for the direct treatment of high-salt food wastewater. |
|
Food wastewater contains a large amount of easily degradable organic matter (high COD), and traditional anaerobic/aerobic systems require a large area and have a long hydraulic retention time. |
Electrochemical treatment, as an enhanced pretreatment, can rapidly remove 40%–70% of COD (within 30–60 minutes), significantly reducing the load on the biochemical system and decreasing its footprint and investment by 30%–50%. |
|
Wastewater from brewing, soy sauce production, and fruit juice processing has high color intensity, and even after biological treatment, the color intensity still fails to meet standards. |
Electrochemical deep decolorization—chromophores (caramel color, Maillard reaction products, etc.) are oxidized and broken down, resulting in a color removal rate of ≥90%, and colorless and transparent effluent. |
|
Food wastewater discharge exhibits significant seasonality/intermittency (e.g., during the crushing season or fruit processing season), making the biochemical system difficult to maintain during shutdowns and requiring a long acclimatization period (2-3 weeks) upon resumption of production. |
Electrochemical systems are ready to use immediately and can operate intermittently—they achieve treatment results instantly upon startup, have no impact during shutdown, can be completely shut down during downtime, and can be restarted immediately upon resumption of production, without the need for biochemical acclimatization. |
|
The oil-water separation and flotation process requires the addition of a large amount of flocculant (PAC/PAM), resulting in a large amount of chemical sludge that is difficult to dewater and dispose of. |
Electrochemical alternatives to chemical flocculation – no flocculant is added, resulting in dense flocs with low moisture content, and sludge volume is only 40%–60% of that produced by chemical flocculation. |
|
The effluent must meet the requirements for microbial indicators such as fecal coliforms. Traditional disinfection methods using sodium hypochlorite pose risks related to reagent storage and safety. |
Electrochemical simultaneous disinfection and sterilization – active chlorine and hydroxyl radicals are generated at the anode, which effectively kill pathogenic microorganisms without the need for a separate disinfection unit and without the risk of chemical storage. |
III. Working Principle
Food processing wastewater, after being treated by a screen/grid to remove coarse solids, enters an electrochemical reactor where it undergoes synergistic purification through multiple mechanisms under the action of electrodes:
(1) Direct electro-oxidation – mineralization and degradation of dissolved organic matter: Dissolved proteins, peptides, amino acids, sugars, organic acids, alcohols, etc., in the food wastewater lose electrons directly on the anode surface and are oxidized: The carbon chains of large organic molecules are oxidized and broken, gradually decomposing into small organic acids; the amino groups in amino acids/proteins are oxidized and released as NH₃ (further oxidized to N₂); sugars and organic acids are directly mineralized into CO₂ and H₂O, with a COD removal rate of 40%~70% (pretreatment stage)
(2) Indirect electro-oxidation (with • OH and active chlorine are the main components) OH- and active chlorine are generated by anodic electrolysis of water. Hydroxyl radicals are generated by utilizing the chloride ions naturally present in the wastewater (food wastewater contains a certain amount of NaCl, or a trace amount of salt can be added) to produce active chlorine (Cl₂, HOCl, OCl⁻): Hydroxyl radicals indiscriminately oxidize organic matter in the solution that has not directly contacted the anode. Active chlorine diffuses and oxidizes residual dissolved organic matter, and COD and ammonia nitrogen in the effluent are reduced simultaneously.
(3) Deep decolorization and disinfection The caramel color, polyphenol oxidized polymers, Maillard reaction products and other chromophores in food wastewater such as brewing/soy sauce/juice are oxidized and their conjugated structures are broken by hydroxyl radicals and active chlorine, and the effluent is colorless and transparent. At the same time, active chlorine effectively inactivates pathogenic microorganisms such as fecal coliforms and Salmonella in the wastewater, and the microbial indicators of the effluent fully meet the standards.
IV. Core Advantages (Targeting Food Processing Wastewater)
|
Advantages |
illustrate |
|
Highly efficient demulsification and oil removal |
The synergistic effect of electrocoagulation and electroflotation achieves an emulsified oil removal rate of ≥90%, with an effluent oil content of ≤5~10 mg/L, effectively solving the problem of oil-coated sludge at its source. |
|
Significantly reduce COD load |
The pretreatment stage achieves a COD removal rate of 40%–70%, completed within 30–60 minutes, reducing the influent load of the biological system by 30%–50%, and significantly reducing the footprint and investment required for the biological system. |
|
Adaptable to high-salt food wastewater |
Wastewater containing 2%~5% salt from pickling, sauces, soy sauce, etc., can be treated directly. The Cl⁻ in the salt is converted into active chlorine, which promotes oxidation. The efficiency is not inhibited but rather increased. |
|
Deep decolorization and disinfection are completed simultaneously. |
The effluent is colorless and transparent, and all microbial indicators such as fecal coliforms meet the standards, eliminating the need for separate decolorization and disinfection units. |
|
Zero dosage (replacement for PAC/PAM) |
No chemical flocculants, oxidants, or disinfectants are added; it only consumes electricity, and there are no risks associated with the procurement and storage of chemicals. |
|
Ready to use immediately, perfectly adapted to intermittent production |
Food processing is highly seasonal/intermittent (pressing season, processing season), and electrochemical processes can be started and stopped at any time. Processing effects are achieved immediately upon startup, and shutdown has no impact, eliminating the need for biochemical acclimatization. |
|
Low sludge production and easy sludge dewatering |
Electrochemical flocs are dense and have low moisture content, producing only 40% to 60% of the sludge generated by chemical flocculation, thus significantly reducing sludge treatment costs. |
|
Unaffected by temperature |
Stable operation from 0 to 40℃, it can be started immediately when production is restarted after a winter shutdown, without worrying about a decrease in biochemical efficiency at low temperatures. |
|
Small footprint, integrated modular design |
As a pre-treatment unit for biochemical enhancement, the HRT (Heat Retention Time) takes only 30-60 minutes and occupies a much smaller area than the traditional oil-water separation flotation + coagulation sedimentation combination. |
|
Fully automatic PLC control |
Operating parameters are automatically adjusted based on water volume and quality, allowing for unattended operation. |
V. Technical Parameters (Customizable)
|
parameter |
scope |
|
Processing volume |
5 ~ 5000 m³/day (modular parallel operation) |
|
Installed power |
5 ~ 400 kW (depending on water quality and treatment objectives) |
|
Operating voltage |
3 ~ 15 V (DC, safe voltage) |
|
effluent COD |
Removal rate 70%~99% |
|
Ammonia nitrogen in effluent |
Removal rate 80%~99% |
|
Water-producing animal and vegetable oils |
≤5~10 mg/L (removal rate ≥90%) |
|
Water color |
Removal rate ≥90%, colorless or light-colored transparent |
|
Fecal coliforms |
It can meet the corresponding emission standards |
|
Equipment Material |
PP / Stainless Steel |
|
Inlet water requirements (pre-treatment recommended) |
Large solids are removed by a grid/screen, pH 5~10 |
VI. Process Location
Option 1: Enhanced Pretreatment Before Biochemical Treatment
Food processing wastewater → Bar screen/sieve (removal of coarse solids) → Equalization tank → Electrochemical treatment equipment → Oil-water separation/sedimentation (floc separation) → Anaerobic/Aerobic biological system → Secondary sedimentation tank → Discharge meeting standards
Option 2: Advanced Treatment of Biological Effluent (Upgrading to Standards or Reuse)
Food processing wastewater → Pretreatment → Biological system → Secondary sedimentation tank → Advanced electrochemical treatment equipment (removal of residual COD, color, total phosphorus, ammonia nitrogen, disinfection) → Discharge meeting standards/Reuse
Option 3: Direct Treatment of High-Salinity Food Wastewater (Pickling/Sauce/Soy Sauce)
High-salt pickling/sauce wastewater → Bar screen/equalization tank → Electrochemical treatment equipment (COD degradation + decolorization + ammonia nitrogen removal) → Effluent → Discharge meeting standards/Evaporation crystallization (resource recovery)
Company Details
Business Type:
Manufacturer,Exporter,Trading Company,Other
Year Established:
2005
Total Annual:
$5 million-$6 million
Employee Number:
40 people~60 people
Ecer Certification：
Verified Supplier
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 ... 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 ...
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