WATER AND WASTEWATER TECHNOLOGY
IN THE WASTE DISPOSAL AND ENERGY INDUSTRIES
During waste disposal, seeping water and wastewater are formed that contain in part toxic and water polluting components.
Our treatment plants are suitable for the most varying requirements:
- Landfills
- Scrapyards and chip piles
- Refuse incineration plants
- Waste utilisation plants
- Liquid hazardous waste
We use chemico-physical processes (carbon adsorption), membrane processes and biological treatment stages. The ideal process or combination of processes is individually designed for our customer's applications.
Your contact
Reference
SIGRE
WISMUT GMBH
Split-O-Mat® NOM
MÜLLHEIZKRAFTWERK
RBE
SIGRE · BUCHHOLZ · LUXEMBURG
BIOMAR®
SEEPING WATER PLANTS - MEMBRANE TECHNOLOGY OF LANDFILL LEACHATE
The waste disposal organization SIGRE manages the Muertendall deposit in Buchholz, Luxembourg. In 2003 SIGRE commissioned EnviroChemie to build a landfill leachate treatment plant. The aerobic membrane bioreactor Biomar® OMB with nitrification and denitrification phases has been in operation since January 2005. A special ultrafiltration plant is integrated in the bioreactor. This process is ideal for clients like SIGRE with limited space because it can keep the water volume in the plant at a minimum.
EnviroChemie has built more than 30 seeping water plants in Europe.
| Product: |
Biomar® OMB |
| Process: |
aerobic membrane bioreacto |
| Capacity: |
85 m3/day
|
| Waste water type: |
landfill leachate |
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URANIUM WASTE WATER · WISMUT GMBH
PLANT FOR THE TREATMENT OF WATER FROM FLOODING OF A URANIUM MINE
Description of the plant
As part of the remediation of the WISMUT GmbH the mine at Schlema-Alberoda was decommissioned and a controlled flooding was carried out. The excess mine water contains dissolved uranium, arsenic and manganese. Also radium is found in the water. For discharging into the local river EnviroChemie has built a water treatment plant. This plant is designed for a capacity of 450 m³/h.
The water treatment consists mainly of a combination of precipitation followed by flocculation, sedimentation and filtration. Uranium is bound and precipitated by using Gopur® 3000, a special organic product.
The resulting sludge is mechanically dewatered and immobilized. The immobilized product fulfills the mechanical and chemical criteria for deposition.
The plant works fully automatic and visualized. All components of the water line are 100% redundant.
Technical data
| capacity: |
450 m3/h |
| space requirement: |
4.000 m2 |
| basins: |
coated concrete |
| control system: |
redundant PLC visualisation, remote control |
| settling basins: |
lamella separator |
| immobilisation of sludge |
|
discharge into local river according
to requirements for radioactive protection |
|
| start up 1999 |
operation time 25 years |
Cleaning Performance
| uranium: |
> 93% |
| arsenic: |
> 93% |
| radium: |
> 94% |
| manganese: |
> 60% |
|
reaction time approx. 15 min
|
|
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BUILDING SECTOR
Split-O-Mat® NOM
WASTEWATER NEUTRALISATION ON CONSTRUCTION SITES
Some wastewater produced on civil engineering or tunnel construction sites should be treated before being introduced into the sewage system or the preflooder. The wastewater formed must be distinguished as follows:
- alkaline wastewater with an increased pH level
- wastewater with solids and turbid matter
- oil containing wastewater
Treatment processes
Depending on your demand, we use the following treatment processes:
- neutralization (CO2 or acid)
- flocculation
- sedimentation
- sludge dewatering
- emulsion breaking (oil containing wastewater)
- pH monitoring
- turbidity measurement
- sonic flow measurement
Plants
The following standard size plants are available for sale or for rent:
| Plant type: |
NOM 4B |
NOM 8B |
NOM 16B |
NOM 40B |
| Method: |
continuous |
continuous |
continuous |
continuous |
| Neutralising agent: |
CO2 |
CO2 |
CO2 |
CO2 |
| Capacity*: |
4 m3/h |
8 m3/h |
16 m3/h |
36 m3/h |
Dimensions (container)
L x B x H cm approx. |
405 x 245 x 265 |
405 x 245 x 265 |
405 x 245 x 265 |
700 x 250 x 22 |
*Capacity: depending on the pH value charge
The neutralisation plants are completely built into an insulated, heated container and designed for use on construction sites. For short-term applications, we have plants for rent. If necessary, neutralisation plants with a capacity of up to 500 m3/h can be offered.
Choosing EnviroFALK means choosing a partner with more than 30 years' experience in wastewater treatment and many credentials in the construction site industry.
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MÜLLHEIZKRAFTWERK · ULM · GERMANY
ENVOCHEM® WASTE WATER TREATMENT FOR FUME GAS WASHING WATER
Description of the plant
The multi-stage process for the treatment of very acidic effluent was dimensioned in such a way that the contaminants can be separated as “pure products”.
1st stage: Separation of particles and activated carbon powder
The acidic effluent is treated by a membrane filter press. Before emptying the press, the cake is washed in order to eliminate the acids. This process step allows the separation of white gypsum in the following stage.
2nd stage: gypsum recovery
In the gypsum precipitation stage, the effluent is partially neutralized to pH 2 by adding lime and caustic soda. The addition of lime is controlled by a continuous measurement of calcium and sulphate. The gypsum separated in the following sedimentation is dewatered and washed with a vacuum belt filter so that “pure” gypsum is recovered.
3rd stage: Ammonium stripping and recovery
The effluent which is still acidic is afterwards adjusted to pH 11 by using caustic soda. The steam-stripping is carried out in 2 columns, and after condensation the recovered ammonia is recirculated to the incinerator where it is used in the DENOX stage.
4th stage: Precipitation of heavy metals
The heavy metals still contained in the waste water are finally neutralized and precipitated with the help of precipitation and flocculation chemicals. The hydroxide sludge is separated in a clarifier and finally dewatered in a chamber filter press. The effluent is finally polished over 2 sand filters.
5th stage: Evaporation for salt recovery
The effluent is finally evaporated in order to get a pure salt solution. This stage was not delivered by EnviroChemie.
Technical data
Dimension of the waste water
treatment plant: |
2 m3/h |
|
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RBE · RHEINISCHE BIOESTER GMBH
BIOMAR® AHP
ANAEROBIC TREATMENT OF BIO DIESEL PRODUCTION EFFLUENTS
Description of the plant
While the bio diesel production organically highly loaded wastewater results e. g. during glycerine evaporation, fatty acid and methyl ester drying process (vapour condensate). Substantial waste water constituents are glycerine, methanol and free fatty acids.
Features of this wastewater concept are small area requirement, excellent biomass separation, low operating costs as well as gain of biogas production. The wastewater flows into a buffer tank where variations of flow and pH are balanced out. The tank is sufficiently sized for emergencies. The organic substances are hydrolysed by special fermentative microorganisms to fatty acids after pH adjustment. A feed/treated effluent heat exchanger improves the energy balance of the treatment system. In the patented Biomar® AHP reactor the increased anaerobic biological degradation of the organic waste water constituents by biogas production, which is used in a steam boiler, takes place. In the aerobic downstream basin the methanogenic biocoenosis is inactivated. A programmable logic controller (PLC) and a process visualization system support complete automatic operation. The plant fulfills all environmental requirements with regard to water, air and noise pollution.
Performance
| Capacity: |
50 m3/d |
| CSB-load: |
4.000 kg/d |
| CSB-concentration: |
< 80.000 mg/l |
| CSB-reduction (anaerobic): |
> 95% |
Space requirement:
|
20 m x 15 m |
| Control system: |
SPS, process visualization |
| Methan reactor: |
|
| • Volume |
2 x 200 m³ |
| • Material |
stainless steel, isolated |
| Biogas removal: |
> 1.950 m3/d |
| Temperature outside: |
-35°C bis +40°C |
| Process temperature: |
approx. +35°C |
Start up:
|
2006 |
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