Dewatering and Thickening of Municipal Sewage Sludge using the Decanter. Flottweg has more than 50 years of experience in dewatering and thickening sewage slurry. We know the special requirements of sewage treatment plants and the water industry. As a result, we have developed a special decanter series especially for sewage treatment plants: the Flottweg C series.
The waste-sludge generated by primary and secondary (biological) treatment of municipal & industrial wastewater needs to be managed at every plant big or small. In the larger sewage treatment facilities waste sludge thickening and dewatering has always been assumed a necessity without the planners and designers thinking twice about the cost requirements.
In the smaller and decentralized STP’s where available investment is always lower, the on-site waste-sludge management (thickening & dewatering) maybe compromis...
In the treatment of sanitary sewage, bio-solids are separated from the liquid. These bio-solids are concentrated and dewatered using filter presses, centrifuges, or other devices. Hydrogen sulfide and mercaptans are released during the dewatering operation. Carus permanganates react quickly and produce immediate results for hydrogen sulfide removal in order to provide a safe, odor free environment and minimize corrosion due to sulfides.
TenCate Geotube technology dewaters primary, secondary and overflow sludge from the sewage treatment plants’ digesters and lagoons. This municipal dewatering solution is used in water and wastewater treatment applications including lagoons, tanks, and digester cleanouts. The containers can provide dewatering and containment in one operation, with 85% to 90% reduction of BOD in the effluent. Most of the time, the dewatered effluent is clear and safe enough to be returned to the sewage treatment plants.
Using Oxygen to Solve Waste Water Problems
Lack of oxygen can cause inadequate purification or even anaerobic decomposition, as well as offensive odors. Injecting oxygen into sludge beds &/or piping allows you to:
* Reduce nitrogen levels
* Meet peak O2 demands
* Have a back up to your aeration system
* Pre-purify waste water
* Control odors
* Deter corrosion damage
* Meet increased requirements regarding waste water purification
From a regulatory standpoint, the industry is divided into a number of categories: commercial/industrial solid waste incinerators (CISWI), municipal waste combustors (MWC), hospital/medical/infectious waste incinerators (HMIWI), hazardous waste combustors (HWC), sewage sludge incinerators (SSI), and other solid waste incinerators (OSWI). While each sub-category is subject to differing environmental regulations, all can benefit from evaluating their air pollution control requirements.
AQQA is used in industrial wastewater treatment to: separate the sludge from the clear water in membrane bio reactors. constitute the final filtration of the effluent of standard sewage treatment plants (tertiary treatment). keep specialized bacteria in the system, that can biologically degrade organic matter. enable Zero Liquid Discharge: prefiltration for reverse osmosis systems.
Due to the continuous rise in the waste volumes worldwide it is essential constantly to seek alternatives to landfills and waste incineration: one suitable approach is bio-mechanical waste treatment. Apart from waste management, applications for air purification systems in this field range from soil remediation to sewage sludge drying in waste water treatment, as well as to the recycling of resources and their possible re-introduction.
VITONE ECO decanters, together with all auxiliary machinery such as polypreparers, removal dewatered sludge screws, pumps, etcetera, are meant for the following uses: dehydration and thickening of sewage from civil and industrial purification plants; dehydration of vegetable biomasses and zootechnical sludge; waste water treatment for distilleries and fellmongering waste.
For industrial and municipal treatment plants; Chemical scrubbers, biological towers and adsorption systems to remove hydrogen sulfide, mercaptans, other organic sulfur compounds and ammonia from digesters, pump stations, ponds, grit and screening works, sludge filter presses and dryers. Special Wet Electrostatic Precipitator for sewage sludge incinerators. Stripping ammonia and other volatile compounds. Decarbonization removal of carbon dioxide from wastewater.
LWT`s dredging systems are used for aeration lagoon / pond dredging applications. A dredging system for removal and disposal of raw sewage solids, decayed algae and microorganisms, and algae-laden sludge results in a long term solution for treatment plants. Aeration lagoon / pond dredging increases lagoon storage volume, provides improved detention time, and accommodates increased plant flow.
Venturi scrubbers with FORCE FLUX Condensation technology and Wet Electrostatic Precipitators for industrial, municipal, sewage sludge and pathological waste incinerators to remove micron, submicron particulate, heavy metals and acid gases. Special quencher/scrubber systems for dioxin removal. HCL scrubbing from PVC plastic waste burning. Fine particulate, acid gases and NOx removal on munitions destruction. Cleanup of all pollutants from liquid waste incinerators and other high temperature destruction processes....
If toxicity is identified in a mixed sewage entering a treatment works, the problem for the plant manager is to track and identify the source of the toxicity. This can be done by sampling the effluent stream at various points in its length. By working in a logical sequence back up the sewer network the number of samples can be minimised. This type of testing should be rigorously enforced for new product introduction by a waste producer, as well as sampling the effluents directly at source. The samples would be...
TDA Aerator diffuser can be used in aerobe and an-aerobe phase of (waste-) water treatment(wwtp) at all sort of industries. Ideal for biological treatment aeration and reliable for the treatment of industrial wastewater or sewage water.
the perforated surface of the membrane sleeve makes tube diffusers a perfect solution for all types of chambers and applications.
The exhalation of air through the bottom grooves decreases the depositing of activated sludge underneath the ventilation which means less cleaning...