Scroll down to see Membrane Technology, Adsorption and Coagulation / Flocculation.
Advanced Oxidation Processes (AOP) can be used to treat toxic, non-biodegradable wastewater and/or persistent components in wastewaters. Suitable target molecules: Amines, Pesticides, organic complexed metals, Active Pharmaceutical Ingredients (API's), colorants,...
Advanced oxidation processes in a broad sense, are a set of chemical treatment procedures designed to remove organic (and sometimes inorganic) materials from water and wastewater using oxidation reactions with hydroxyl radicals. In real-world applications of wastewater treatment, however, this term usually refers more specifically to a subset of such chemical processes that employ ozone (O3), hydrogen peroxide (H2O2) and/or UV light. One such type of process is called in situ chemical oxidation.
Based upon our profound background and many years of academic research we can screen and determine the right AOP treatment. In our lab we can execute lab testing and if required we can provide pilot scale units. Finally we design, construct and operate a full flexible, modular and mobile (ATEX certified) unit, to treat your wastwater on-site.
Various membrane processes are viable technologies for numerous water and wastewater treatment applications. Due to wide applicability of the membrane technology it can be a part of an efficient solution for the treatment of challenging wastewaters in the various industrial sectors such as chemical, pharmaceutical, textile, refining as well as food and beverage industries. Examples of possible applications:
Removal of suspended solids and bacteria from Wastewater, clarifying water.
Virus removal, hemicellulose separation, colorants (such as indigo) removal from wastewater.
Removal of divalent ions (e.g. sulfates), hardness from water, synthetic dyes, organic micropollutants (active pharmaceutical ingredients, pharmaceutical residues, pesticides).
Reverse osmosis (RO)
Removal of salts (sodium chloride, NaCl) and persistent organic pollutants from water or wastewater.
Membrane technology (pressure-driven membrane separation) utilizes semipermeable membranes (polymeric or ceramic) to remove unwanted impurities from water or wastewater (Fig.). Membrane acts as a semipermeable barrier, which restricts the flux of various components due to their molecule size (size exclusion), chemical nature (such as hydrophilicity or hydrophobicity) or electrical charges. Membrane separation processes operate usually without heating and therefore use less energy than conventional thermal separation processes such as distillation. In many cases, such as in food and beverage applications, the both fractions produced in membrane filtration called as permeate (stream passing through the membrane) and concentrate (stream retained by the membrane) can be utilized.
Based upon our extensive background in various membrane technologies and many years of academic research we can screen and determine the appropriate membrane technology (pressure driven or other membrane technologies) for your specific wastewater. We can customize the treatment process based on your waste stream and combine membrane technology with other wastewater technologies, if needed. Finally we design, construct and operate a full flexible, modular and mobile (ATEX certified) unit, to treat your wastewater on-site.
Adsorption is an interesting technique to remove pollutants from both liquid and gas waste streams.
Suitable applications are: API removal, off-gas purification, selective removal of a specific pollutant, polishing to ensure discharge limit,...
Adsorption is a multiple phase (liquid-solid or gas-solid) separation technique in which organic and/or inorganic components are retained by a solid component: the adsorbent. Pollutants are adhered to its surface and removed from the waste stream using interactions with the adsorbent’ surface. In general, two types of adsorption are identified, bases on this interaction mechanism: (i) physisorption (i.e. through physical bonding) and (ii) chemisorption (i.e. through chemical reaction). The lifespan of the adsorbent materials can be significantly extended by regeneration, in this process the adsorbent’ surface is cleaned and reactivated.
Depending on the application, a choice can be made for a selective (e.g. zeolites) or a non-selective adsorbent (e.g. activated carbon). The first option is preferred when only a specific target molecule has to be removed, e.g. API removal. The latter is often chosen in case of a fail-safe, to ensure the removal efficiency, e.g. for polishing of a treated waste stream.
Based upon our profound background and many years of academic research we can screen and determine the right adsorption treatment. In our lab we can execute lab testing and if required we can provide pilot scale units. Finally we design, construct and operate a full flexible, modular and mobile (ATEX certified) unit, to treat on-site your wastewaters.
In water and wastewater treatment, coagulation-flocculation involves the addition of chemicals which join the small, destabilized particles together into larger aggregates so that they can be more easily separated from the water. Coagulation-flocculation is used in most cases as a pre-treatment process to remove nutrients (phosphorus), organics and in some cases also metals from different types of wastewater before primary treatment. However, for some industrial wastewaters the coagulation-flocculation can offer an efficient treatment solution as a stand-alone process.
Coagulation is a chemical process that involves neutralization of charge by adding positively charged metal ions which neutralizes the negatively charged particles present in wastewater. Flocculation on the other hand is a physical process where neutralized particles will join together and form aggregates. The coagulation-flocculation process can be used as a preliminary or intermediary step between other water or wastewater treatment processes like filtration and sedimentation. Iron and aluminum salts (FeCl3, Fe2(SO4)3, Al(OH)xCl3-x, Al2(SO4)3) are the most widely used coagulants, however salts of other metals such as titanium and zirconium have been found to be highly effective as well.
Based upon our profound background and many years of academic research we can screen and determine the right coagulation/flocculation (pre-)treatment for your wastewater. In our lab we can execute lab testing and if required we can provide pilot scale units. Finally we design, construct and operate a full flexible, modular and mobile (ATEX certified) unit, to treat your wastewaters on-site.
Poly-Ox is a polyvalent mobile oxidation-unit that can combine different AOP technologies.This unit can be used in a batch (multiple sequential AOP) or continuous (single AOP) mode depending on the specific problem of the customer. The different techniques that can be used sequantial are:
De unit is developed as a pre-treatment to convert toxic wastewaters into biodegradable wastewaters that can be discharged into a standard biological wastewater treatment. The unit can handle volumes between 150m3 and 5000m3/year depending on the required residence time and oxidans dosing.
To ensure the perfomance of the unit we use our Bio-Safe Online Toxicity Analyser.
Poly-Met is a polyvalent mobile unit for the removal of a variety of metals:
The Poly-Met Unit purifies a flow between 150-1500m3/year (one container). Optionally, the unit can further purify this flow until a raw material (other containers).
Parallel to this removal of heavy metals the unit can also be used for the removal of phosphates and fluorides. Additional coloidal particles or emulsions can also be broken or separated.
The Bio-Safe is an aerobe respirometer for the online monitoring of problem causing changes in the wastewater composition. Based upon the respirogram the available BOD can very quickly be measured or the presence of acute toxic components can be detected.
The respirogram is a trend of the OUR (Oxygen Uptake Rate) in function of the treatment time. The quicker certain biological products are digested by the active slib, the higher the OUR will be. In case of toxic compounds the total OUR can decrease under a critical value. Considering the fact that adapted sludge from the own biological treatment is used there is a direct correlation between the measured toxicity and the effect on the own biological treatment. The response time can be experimental determined in the InOpSys lab.