archive-com.com » COM » W » WATERONLINE.COM

Total: 1905

Choose link from "Titles, links and description words view":

Or switch to "Titles and links view".
  • Wastewater Disinfection
    systems These features mean less interruptions in production and no more hosing down your basin Remove three times more sludge in half the time Ozone Destruction System NeoTech Aqua Solutions line of 254 nm wavelength low pressure lamps effectively destroys residual ozone and a member of our technical staff will professionally size your UV system Water Champ FX Induction Systems Provide Superior Mixing The Water Champ FX Chemical Induction System from Evoqua has set the benchmark in chemical feed and disinfection with its innovative design and versatile applications for chlorination dechlorination chloramines pH adjustment and rapid mix The system provides superior mixing intensity maximizing chemical reaction while using less energy Independent third party testing has proven that a Water Champ system can provide up to 40 better power to flow rate ratios compared to other induction mixers or conventional methods ReFleX Efficiency For both disinfection and TOC reduction applications NeoTech Aqua Solutions patented ReFleX UV chamber technology represents the state of the art in high efficiency UV systems by reflecting over 99 of the UV we generate back into the water Ozone Disinfection 499AOZ Dissolved Ozone Sensor The 499AOZ sensor is intended for the continuous determination of dissolved ozone The primary application is ozonation basins in municipal water filter plants Ozone is also used as a disinfectant in bottling and food processing plants More Products WASTEWATER DISINFECTION PODCASTS Making Aftermarket Service And Support Work For Water And Wastewater Treatment Plants As municipalities look to make their water and wastewater treatment equipment run longer with fewer operational staff on payroll to maintain the equipment having a reliable aftermarket parts and service provider becomes essential UVT LED Sheds Light On UV Disinfection Learn why measuring UV transmittance is so important to efficient disinfection and how LED helps get you there An Alternative To Chlorine Disinfection Chlorine has been used to disinfect water and wastewater for more than a hundred years and while chorine has been critical to ensure public safety it does have some drawbacks There is a risk of highly toxic emissions and it also reacts with organic matter in water and wastewater and forms harmful disinfection byproducts The Importance of Drought Good for Business Normally when people hear the word drought it s thought of with a negative connotation In the water business however that s not always the case Bio Augmentation Adding Bacteria To Wastewater Treatment Plants Novozymes is the world s largest industrial biotech company The largest segment of the company deals with enzyme products and they innovate products and develop applications in a variety of industries including first and second generation biofuels bio agriculture detergents and wastewater applications Ozone An Emerging Star For Disinfection There are many places around the country where water shortage is a big issue Water is the most precious resource we have and in light of the shortage people have started trying to investigate creative ways of what s my next water resource Chris Milligan vice president director of engineering with BlueInGreen told Water Online Radio in an interview More Wastewater Disinfection Podcasts Newsletter Signup SIGN ME UP WASTEWATER DISINFECTION APPLICATION NOTES Disinfection And Emerging Contaminant Removal With HyDOZ Importance Of Measuring UV Transmittance UVT For UV Disinfection Process Monitoring And Control For Increased Productivity And Efficiency Microbial Control In Cheese Making Chlorine Measurement In Wastewater And Regulated Discharge Requirements Comparison of UV vs Sodium Hypochlorite Fact Sheet UV Technology Offers Solution For Emerging Water Crisis Disinfection By Products DBP Precursor Monitoring More Application Notes WASTEWATER DISINFECTION VIDEOS 3 sub class img responsive Ozone Simplified Make Your Next Disinfection Project As Simple As 1 2 O 3 Pinnacle Ozone Solutions was founded with the goal of simplifying the ozone process Our products and systems specifically designed to be modular reliable and both energy and cost efficient Our truly unique approach allows each system to be precisely matched to your individual needs using truly independent QuadBlock ozone generator cells This approach also allows for easy expansion reduces the need for costly redundant or standby equipment and can be fully upgraded at any time Watch this informative video about how Pinnacle s radically simple approach to ozone projects De Nora Brings New Focus To Water Treatment Following the acquisition of Severn Trent Services Water Purification Group Water Online caught up with John Dyson Commercialization Manager for the newly branded De Nora Water Technologies to understand what the change means for the water and wastewater industry Dyson discusses how the new organization is enhancing the company s product lines including the newly redesigned ClorTec on site sodium hypochlorite generation system UV Treatment Gains Traction In Reuse Applications Video Fresh off TrojanUV being named manufacturer of the year by the WateReuse Association Water Online caught up with Jennifer Muller Vice President of Global Municipal Sales for TrojanUV at this year s WEFTEC to understand how ultra violet systems are being applied in the growing movement towards direct and indirect potable water reuse Largest Compressible Media Filter In The World Implemented When the Springfield OH plant was presented with the mandate to meet stricter guidelines for the control and treatment of combined sewer overflows it started down a road that would eventually lead it to the largest compressed media filter installation in the world Grundfos Partners With Hytec Water System To Save Time And Money The Hytec Water System is designed to solve water management problems in high rise condominium and commercial buildings This video shows how a feed pump system by Grundfos helps Hytec deliver a better package to their customer The project featured in this video is a large complex in Vancouver that services over 450 residential units in addition to commercial units such a grocery store and coffee giant Automation and the accuracy of the Grundfos pump system saves time and money More Videos WASTEWATER DISINFECTION NEWS Ecosphere Investor Drew Bledsoe Discusses Chemical Free Water Treatment For Fracking On CNBC s Closing Bell Drew Bledsoe former NFL quarterback and principal of Bledsoe Capital Group appeared

    Original URL path: http://www.wateronline.com/solution/wastewater-disinfection (2016-02-14)
    Open archived version from archive

  • Wastewater Filtration
    to be approved for water reuse NSF ANSI Std 350 class R by the NSF National Sanitation Foundation International AltaPac The AltaPac Ultrafiltration Package System is designed as an economical ultrafiltration membrane treatment system that is both easy to use and simple to install This versatile system can process flows up to 100 gpm on surface waters and 180 gpm on ground waters Premium Hurricane All Poly Cartridges These high flow polypropylene cartridges are designed for most applications where absolute rated pleated filtration is needed Designed to hold up to 75 sq ft of filtration media our All Poly high flow cartridge is a great value These cartridges are constructed with 100 polypropylene materials Efficiency ratings to 99 98 Beta 5000 Leopold Ultrascreen Disk Filter The Ultrascreen disk filter is compact and modular with plug n play ease reducing construction footprint and providing quick and easy startup Its high hydraulic loading capacity and in service backwash feature no need to provide additional units to handle flow during backwash means the Ultrascreen disk filter requires fewer units to treat design flows lowering construction costs The compact design and fewer required units also make it ideal for adding to existing plants facing more stringent discharge requirements Leopold Tertiary Filter Systems by Xylem Leopold filter systems are a powerful and reliable solution for municipal wastewater treatment A Leopold filter is planned based on particular upstream conditions BIOFOR Biological Aerated Filtration System BIOFOR is a biological submerged filter containing a fixed dense granular bed with influent wastewater flowing in an upward direction More Products WASTEWATER FILTRATION PODCASTS Water Reuse Becomes Builders Selling Point One way to think about offsetting water rate increases is to reuse the water being consumed For example instead of paying 100 a quarter and using the water flowing out of faucets just once what if you as a homeowner could treat that wastewater on site and reuse it to irrigate the lawn wash the car or flush the toilets Fuzzy Filter Uses Compression In Advanced Primary Treatment Advanced primary treatment reduces or eliminates the solids load or organic carbon out of the waste stream By doing so a wastewater plant can decrease aeration power and avoid the need to expand its treatment basin size The removed solids can also be moved to a digester to produce energy Benefits Of Walnut Shell Backwashable Media Filters Filtra Systems Company developed the walnut shell filter about 40 years ago One of the attractions of walnut shell is how well it can handle oil When oil mixes together with sand it essentially becomes asphalt With walnut shell the oil is coalesced and then when it s backwashed the oil can be released from the shell Primary Filtration Using Cloth Media Filtration Technology Since 1969 Aqua Aerobic Systems Inc has been a leader in the design application and manufacture of wastewater treatment equipment and systems for municipal and industrial markets worldwide They are most noted for the Aqua SBR the sequencing batch reactor biological process

    Original URL path: http://www.wateronline.com/solution/wastewater-filtration (2016-02-14)
    Open archived version from archive

  • Flushables
    as duster heads cleaning cloths and disinfecting wipes which can build up on the leading edge of the pump impeller and become entangled reducing the efficiency of the pump or even causing a complete stoppage N pumps End Clogging Problems Improve Efficiency The use of so called disposable products such as personal care and cleaning wipes caused recurring clogs in the pump impellers at a 1 350 gpm gallons per minute lift station operated by the city of Waconia Minnesota Lift Station Reduces Clogging Lowers Operating Expenses With Self Cleaning Pumps Aging pumps at Jackson Energy Authority s Rolling Acres Lift Station Jackson Tenn resulted in frequent clogging and outages that required costly maintenance and repair Flygt Experior Pump System Helps Louisiana Lift Station Overcome Clogging Problems Jefferson Parish Louisiana extends along a 15 mile wide corridor west of and upriver from New Orleans As demonstrated by the recent Hurricane Isaac the Parish is vulnerable to tropical storms and hurricanes from June through November in a region already known for high rainfall events throughout the year New Report On Clogging And Throughlet Size Pump manufacturers have traditionally believed that pump clogging can be avoided by making the internal pump throughlet equal to or larger than what can be flushed down a toilet By Isabelle Kliger More Flushables White Papers and Case Studies FLUSHABLES PRODUCTS Wipes Ready Technology Are you wipes ready Wipes and rags are clogging pumps and damaging wastewater treatment systems NEW Wipes Ready technologies from JWC will keep your systems running efficiently Vertical Auger Monster Model AGV The Auger Monster model AGV safely and easily screens cleans and conveys rags and debris straight up and out of the sewer system This gives collection system managers an affordable new way to remove rags before they clog sewage pumps eliminating the time and expense wasted on de ragging pumps Response Absorbent Dry Wipes Light Medium and Heavy Duty Dry Wipes Lead Sampling Preparation Wipes Designed to ease sample preparation and analysis of surface lead or surface dust the Ghost Wipe is a sturdy wiping material More Flushables Products FLUSHABLES PODCASTS Wet Wipes Clog Sewer Systems Wet wipes and premoistened personal wipes now ubiquitous alongside toilet tissue in the supermarket aisle are causing problems for wastewater plant managers They are incompatible with sewage treatment technology and they re forced to spend the millions of dollars each year to pull gobs of wipes out of their systems An Answer For Flushables In the past decade wastewater professionals have been confronted with a drastic change in the debris coming through their facilities as consumer flushables have become a nightmare Darby Ritter of Smith and Loveless discusses a potential solution Grinding Wipes To A Halt Ken Biele CEO of JWC Environmental discusses solutions to the growing problem of equipment clogging disposable wipes Flushable Mess How To Clean Up The Nondispersible Wipes Issue The flushing of nondispersible wipes has become the biggest problem for collection systems operators over the past few years and it s

    Original URL path: http://www.wateronline.com/solution/flushables (2016-02-14)
    Open archived version from archive

  • Wastewater Membranes
    U S based pulp and paper manufacturer required high purity process and boiler feed water It was using water from a local well and treating it with a 150 gpm conventional RO system operating at 75 recovery but this was creating 50 gpm of wastewater over 26 million gallons per year Closed Circuit Desalination Technology Provides Steel Manufacturer ROI In Less Than 60 Days Eliminate CIP And Cut Wastewater Disposal In Half With CCD More Wastewater Membranes White Papers Case Studies WASTEWATER MEMBRANES PRODUCTS EnviQ Submerged Ultrafiltration Membrane QUA s EnviQ flat sheet submerged ultrafiltration membranes have been specially developed to improve the ease of operation and maintenance of MBR facilities EnviQ s innovative design offers ultrafiltration quality product water with a stronger and more rugged PVDF flat sheet membrane The unique features in EnviQ consist of reverse diffusion and specially designed air diffusers which maximize scrubbing efficiency lowers pressure and reduces cleaning TETRA LP Block Dual Parallel Lateral Underdrain In municipal drinking water applications or pre treatment for desalination plants using gravity filters the filter underdrain is one of the most important components contributing to overall system performance and operation whether a new filter design or retrofitting an existing filter TETRA Modular Deepbed Filter Modular Packaged Filtration Plant The TETRA Modular DeepBed Filter Plant from De Nora Water Technologies is designed as a competitive filtration plant for tertiary effluent from small to medium size sewage works The Modular DeepBed Filter utilizes the technology of DeepBed filtration that has made the TETRA filter such a successful tertiary treatment process over many years in Europe and the United States TETRA DeepBed Tertiary Filtration System The TETRA DeepBed tertiary filtration system is an economical solution for the removal of total suspended solids and total phosphorus TETRA Denite Deepbed Denitrification The TETRA Denite system integrates well with other plant treatment processes to provide superior total nitrogen TN and phosphorous removal Pall Aria FIT System The Pall Aria FIT system illustrates an innovative approach to packaged water systems featuring a flexible design that is easily tailored for customers specific requirements Systems are pre assembled and shipped to site for easy and efficient installation and years of trouble free operation With the proven reliability of the Pall Aria platform you can trust Pall to treat all your surface water groundwater wastewater and re use water Pall is a global leader in filtration separation and purification technologies Pall Aria systems are engineered to eliminate contaminants and deliver pure water for drinking industrial processes discharge and other vital uses Sludge Sucker The Sludge Sucker unit is a cable driven sludge removal mechanism that provides cost effective and efficient removal of lightweight sludges such as alum or ferric hydroxide or light iron and manganese precipitates from rectangular settling basins ROMAG CSO Screen The ROMAG RSW CSO Screen fitted between the discharge culvert and the relief sewer reliably retains all visible solids during peak events More Wastewater Membranes Products WASTEWATER MEMBRANES PODCASTS Membrane Systems For Dirty Water One of

    Original URL path: http://www.wateronline.com/solution/wastewater-membranes (2016-02-14)
    Open archived version from archive

  • Nutrient Removal
    works The Modular DeepBed Filter utilizes the technology of DeepBed filtration that has made the TETRA filter such a successful tertiary treatment process over many years in Europe and the United States TETRA DeepBed Tertiary Filtration System The TETRA DeepBed tertiary filtration system is an economical solution for the removal of total suspended solids and total phosphorus TETRA Denite Deepbed Denitrification The TETRA Denite system integrates well with other plant treatment processes to provide superior total nitrogen TN and phosphorous removal True Simultaneous Nitrification Denitrification Biological Treatment The TrueSND biological treatment process from Evoqua is a well established true simultaneous nitrification denitrification technology The process achieves nutrient and BOD treatment limits using less power in a smaller footprint when compared to more conventional alternatives It can be applied in both new plants and retrofits and it can easily resolve high peak and storm flow challenges Evoqua has over 800 installations and offers three systems that fit specific plant needs and capacities Orbal multichannel oxidation ditch systems VLR systems and VertiCel wastewater treatment systems Evoqua also offers SmartBNR process controls which optimize energy efficiency and plant operation TrueSND can be applied for nutrient removal TN and TP limits BOD removal only 30 30 effluent new construction plant retrofits and upgrades and high peak and storm flows Evoqua can help create a solution that saves energy and space while meeting required effluent standards Magnetite Ballasted Treatment Simple Reliable And Proven The BioMag and CoMag Systems from Evoqua infuse magnetite into conventional biological and chemical floc making it heavier and dramatically improving settling DAVCO Field Erected Treatment Plants Evoqua Water Technologies manufactures and supplies DAVCO steel field erected biological treatment systems for the reduction of biochemical oxygen demand BOD total suspended solids TSS total nitrogen TKN and phosphorus P If municipal or industrial wasteater treatment facilities are looking for ways to reduce their associated engineering and construction costs plus have a shorter concept to completion timeline then these systems are the ideal choice The VLR System for TrueSND Biological Treatment VLR Systems from Evoqua utilize a vertical loop based design with looped reactors in series that allows DO stratification As such it is suited for simultaneous nitrification denitrification biological phosphorus removal and storm water treatment More Products Services NUTRIENT REMOVAL PODCASTS Primary Filtration Using Cloth Media Filtration Technology Since 1969 Aqua Aerobic Systems Inc has been a leader in the design application and manufacture of wastewater treatment equipment and systems for municipal and industrial markets worldwide They are most noted for the Aqua SBR the sequencing batch reactor biological process as well as now our cloth media filters Phosphorus Recovery And Revolutionary Algae Phosphorus recovery from wastewater and a newly developed algae product that doesn t require photosynthesis are the latest examples of intense product development within Ovivo In this Water Online radio interview Jim Porteous Ovivo s Vice President and General Manager explains some of the changes he is seeing in the industry that are fueling the Company s focus for the

    Original URL path: http://www.wateronline.com/solution/nutrient-removal (2016-02-14)
    Open archived version from archive

  • Odor Control
    Prevent Buildup And Reduce Wetwell Cleaning Charges The City of Reno NV has long battled the buildup of fats oils and grease in the wetwells of wastewater lift stations in the valleys within this high desert city Recently the city set out to address the problem and reduce the associated costs WWTP s Screw Press Reduces Odors Saves Money And Takes Up Less Physical Space A WWTP chooses a new screw press that takes up less than half the space that the old belt press had occupied This was striking for the operations team but not as striking as the fraction of time they needed to spend managing the screw press Pilot Studies In North Carolina With Hydrex Odor Solutions Two municipalities were faced with odor issues and required corrosion prevention in their collection systems Monitoring in the sewer lines indicated peak H 2 S atmospheric concentrations of 300 500 ppm Both clients desired H 2 S 20 mg L to prevent corrosion and preferably lower to prevent H2S odor WWTP Overcomes Odor Issue The City of Crystal Lake is located about 45 miles northwest of Chicago with a population of nearly 45 000 people Like many wastewater treatment plants urban sprawl and suburban development puts the Crystal Lake Wastewater Treatment Plant near a host of commercial and residential neighbors including a high school immediately west of the plant Plant managers were very forward thinking and wanted to be good neighbors to those occupying the surrounding area They wanted to take steps to reduce and hopefully eliminate completely any odor issues from the plant A New Paradigm In Aeration Technology The DO2E organization sprang from one individual s attempt to solve an aeration problem in a fish hatchery and realizing that his device to do so had many other applications as well This device broke up algal blooms as well as aerating and it was only a short step to modify it into breaking up FOG fats oils and grease deposits in grease traps and lift stations This device was patented thus DO2E was born Odor Control For The City Of Houston A supersaturated side stream process SDOX CS was successfully deployed at temporary and permanent locations throughout the City of Houston for the effective control of collection system odors More Odor Control Case Studies and White Papers ODOR CONTROL RELATED PRODUCTS Alkagen Solution Odor and Corrosion Control Alkagen Solution is a fast acting pH shift technology that effectively controls odors and corrosion in wastewater systems This unique proven product is environmentally safe and uses a combination of alkaline and nitrate technologies to remove and prevent hydrogen sulfide Alkagen solution also reduces the impact of fats oils and grease FOG in the system while providing a beneficial alkaline supplement for the treatment plant The Wet Well Wizard The Wet Well Wizard is the only one size fits all wet well aeration system that has no moving parts is completely non corrosive is simple to install and utilizes no electricity underwater

    Original URL path: http://www.wateronline.com/solution/odor-control (2016-02-14)
    Open archived version from archive

  • Separation and Clarification
    Byproduct Rule D DBPR will require both large and small drinking water utilities to reduce total organic carbon TOC Cryptosporidium and disinfection byproducts DBPs in the treated drinking water distributed to the public Wastewater Treatment System Achieves Stringent Water Quality Discharge Limits And Reduces Costs The Village of Johnson Wastewater Treatment Facility WWTF was among the first in the state of Vermont to meet newly enacted secondary treatment requirements when it began operation in 1970 Clari DAF System Provides Effective TOC Removal For Cambridge WTP To ensure treated water complied with the most stringent drinking water standards including the Environmental Protection Agency EPA Stage 2 Disinfectants and Disinfection Byproducts Rule State 2 DBPR the City of Cambridge MA WTP decided to implement a robust multibarrier treatment solution Mixers Prevent Buildup And Reduce Wetwell Cleaning Charges The City of Reno NV has long battled the buildup of fats oils and grease in the wetwells of wastewater lift stations in the valleys within this high desert city Recently the city set out to address the problem and reduce the associated costs Flygt Mixers Clear Sediment And Save Man Hours For San Antonio Utility For almost 50 years CPS Energy of San Antonio has drawn water from the San Antonio River to recharge two man made lakes that provide cooling water for their power plants Pump Station Bar Screen Solves City s Unique Problem As representatives of a small community the Mendocino City Community Services District administrators felt strongly that they needed to deliver terrific wastewater treatment value at the lowest cost for their taxpayers Monster Clears Clogs And Streamlines Septage Delivery At Ventura Regional Sanitation District The Ventura Regional Sanitation District s Liquid Waste Treatment Facility LWTF was experiencing a double threat to safety and productivity San Diego Experiences Benefits Beyond Contaminant Reduction Because inadequate screening was allowing hair fiber and sand contaminants to work their way through its treatment process The City of San Diego Public Utilities Department Wastewater Branch sought out sludge cleaning technology that they could integrate into their existing system Center Feed Drum Screen Is Mission Critical To MBR Plant Village Sees Long Term Value In Vertical Fine Screen More Separation Clarification White Papers Case Studies SEPARATION CLARIFICATION PRODUCTS Alkagen Solution Odor and Corrosion Control Alkagen Solution is a fast acting pH shift technology that effectively controls odors and corrosion in wastewater systems This unique proven product is environmentally safe and uses a combination of alkaline and nitrate technologies to remove and prevent hydrogen sulfide Alkagen solution also reduces the impact of fats oils and grease FOG in the system while providing a beneficial alkaline supplement for the treatment plant Turn What You Have Into What You Want Evoqua Water Technologies is the leader in Upgrade and Retrofit Solutions for refurbishing wastewater plant equipment and improving operating performance Experienced technical experts can provide thorough evaluations to determine the most cost effective options and draw upon a library of original equipment drawings to speed project execution and lower costs

    Original URL path: http://www.wateronline.com/solution/separation-clarification (2016-02-14)
    Open archived version from archive

  • Sludge Handling
    an anaerobic digestion A centrifuge had been used for the thickening process which dewatered the WAS to a 8 to 10 consistency The plant had three 50 hp units and used either one or two of the units as needed Monsters Protect Pump Station Weather Storms In Scotland Pump blockages and rags are a significant barrier to energy and operational efficiencies at pump stations causing unscheduled shut downs safety hazards for operators costly equipment repairs and increased power usage due to a decrease in the pumps hydraulic performance Scottish Water observed these negative effects caused by an influx of wipes and rags throughout a network of area pump stations Engineers looked to a proven powerful solution in the form of two JWC Environmental Channel Monster grinders at one of their most problematic sites Pumps Reduce Costs Improve Reliability And Deliver Outstanding Energy Efficiency For Ohio WWTP An aging lift station in Marietta OH was the first of 12 stations to be upgraded as part of a capital improvement plan at the city s wastewater treatment plant WWTP Macerator Explodes Monster Sludge Grinder Takes Over The Coeur D Alene ID wastewater treatment plant was having continual problems with two sludge macerators in part because of the durability of the macerator 10K Muffin Monster Takes Over When Macerators Can t Cut It Upgrade Of Channel Monster Cuts Wipes Problem And 78k From Electrical Bill More Sludge Biosolids Processing Studies White Papers SLUDGE BIOSOLIDS PROCESSING PRODUCTS The BioCon Dryer BioCon is a dual belt dryer designed to be one of the safest dryers on the market while maintaining easy and efficient operations In much the same way a convection oven speeds up the baking process in the kitchen BioCon uses hot air circulation to evaporate the water from the biosolids Thermal Hydrolysis Solutions Veolia developed Bio Thelys and EXELYS two innovative solutions that combine thermal hydrolysis with anaerobic digestion With multiple configurations Veolia provides a customized thermal hydrolysis process meeting each plant s needs Turn What You Have Into What You Want Evoqua Water Technologies is the leader in Upgrade and Retrofit Solutions for refurbishing wastewater plant equipment and improving operating performance Experienced technical experts can provide thorough evaluations to determine the most cost effective options and draw upon a library of original equipment drawings to speed project execution and lower costs Evoqua s installation base dates back more than 100 years LAGOON MASTER Sludge Activating Aerator Recreational ponds wastewater lagoons fish grow out ponds and small shallow lakes have always exhibited the problem of organic matter collecting on the bottom and eventually becoming polluted Wastewater lagoons are especially fraught with problems because their purpose is to clean the wastewater to the point that it can be released back into the environment Over the years many different things have been attempted to assist in degrading the organic matter that builds up in the sludge on the bottom of these water bodies Sludge Sucker The Sludge Sucker unit is a cable driven sludge removal

    Original URL path: http://www.wateronline.com/solution/sludge-biosolids-processing (2016-02-14)
    Open archived version from archive



  •