RESPIROMETRY EMERGES AS AN OPERATION TOOL IN THE WASTEWATER TREATMENT FIELD
The Birth of an Idea The saying, "Necessity is the mother of invention." certainly applied to the invention of the Arthur Respirometer. The need to show wastewater treatment plant operators what is actually happening inside the activated sludge process is what stimulated Bob Arthur to invent and patent (in 1962) the Arthur Large Volume Respirometer. He, in fact, needed to know what was happening within the process biologically so he could do a better job of training plant operators, and getting them to appreciate that they were working with a living, breathing system, not just a mass of solids. He felt that if he could get bioactivity information in a timely manner, this would be a real breakthrough, resulting in better process control.
Arthur had to be involved in training operators, for he was part of the operation service division of a major wastewater treatment equipment manufacturer. It was his job to start up plants nationwide and train the operators in all aspects of equipment operation and maintenance. He also had to teach them bench tests to obtain process control information. He usually started by showing an operator how to perform a settling test with a one-liter graduated cylinder. If he was lucky, he might find that the lab (quite limited in those days) included a hand operated centrifuge (there were no drying ovens and scales) so he could tell the operator about the importance of solids concentration. He might then even introduce the operator to a control strategy - the Sludge Volume Index (SVI).
Physical vs. Biological Tests Performing these physical tests of settling and solids on the mixed liquor just did not make sense to Arthur. Activated sludge is a living, breathing process. "How," he wondered, "is it possible to learn what is happening in a biological process by performing physical tests?" Arthur certainly recognized that physical tests were necessary to determine what was happening in the physical part of the process, i.e.settling, but it bothered him that no tests were performed to see what was happening in the biological part, which is usually 50% or more of the treatment process.
When Arthur started his own engineering firm (Arthur Technology Inc.) to design wastewater treatment plants, he was again involved in operator training, and again was frustrated by the lack of bioactivity information when operating a biological wastewater treatment plant. He decided to do something about this. After several years of work to design an instrument especially for use with activated sludge and by operators, the Arthur Respirometer was introduced in a paper given at the Purdue Industrial Waste Conference in 1964.
Educating the Public in Respirometry Shortly after introducing the instrument, Arthur realized that few people understood how to use a respirometer, or realized the importance of the information it could provide, so he began to develop new respirometer-based operation strategies. This technology was called "respirometry". Aware that the only way to sell a new technology was to demonstrate it, Arthur loaded a van with a respirometer, slide show and other props and toured the USA and Canada for several weeks every year, demonstrating his respirometer and his technology to rooms full of operators, technicians and consultants. The strategies, which all utilized timely, bioactivity information obtained from the respirometer, made a great deal of sense to his audiences. The important thing they learned was that they could use this tool to actually determine what was going on inside the treatment process from start to finish, and that they could detect and avoid small treatment problems before they became major problems. In fact, the most common question from the audience was, "Why hasn't anyone done this before?" The rest is history, as they say. Today, hundreds of plant operators worldwide are using Arthur's operation strategies.
Respirometry Plus, LLC is currently looking for distributors in Asian and Latin American countries. A good knowledge of the activated sludge wastewater treatment process is required.
Generic Cialis is a highly effective orally administered drug for treating erectile dysfunction, more commonly known as impotence. Recommended for use as needed, Cialis can also be used as a daily medication.
Where can i buy shatavari in canada cialis online bestellen ohne kreditkarte cheapest cialis generic comprar viagra online envio urgente buy shatavari kalpa online india. Buy shatavari plus meclizine over the counter walgreens comprar cialis generico online barato cialis generico comprar online comprar cialis original 10 mg. Buy shatavari capsules dove comprare cialis generico online viagra vendita on line pfizer order zithromax online shatavari buyers. Cialis online bestellen seriös comprar cialis online en españa contrareembolso vendita online di viagra generic cialis viagra online comprar cialis usa. Buy augmentin 875 mg buy shatavari uk viagra online prezzo buy shatavari online in india comprare cialis generico online sicuro buy shatavari herb. Generic cialis cheapest price zithromax oral suspension online comprar viagra online forma segura vendita viagra on line in contrassegno. Over the counter for meclizine cialis soft online kaufen is meclizine an over the counter drug cialis kaufen online apotheke donde comprar viagra online sin receta. Come comprare cialis generico online cialis online bestellen per nachnahme shatavari buyers india meclizine over the counter cost Cialis 240 Pills 20mg $420 - $1.75 Per pill. Comprar cialis 10mg buy shatavari powder online over the counter meclizine hydrochloride shatavari to buy viagra naturale vendita on line. Donde comprar cialis generico online lasix rezeptfrei bestellen comprar cialis online no brasil buy shatavari powder online india comprar viagra online en mexico. Buy shatavari kalpa in usa comprar zithromax online buying zithromax online uk comprar cialis online usa zithromax azithromycin online lasix bestellen ohne rezept. Cialis generika sicher online kaufen cheap generic cialis online comprare viagra online italia zithromax sale online lasix ohne rezept bestellen. Cialis cheap generic drug store online shopping cialis online bestellen preisvergleich comprar cialis 100 mg generic cialis cheap online cialis online kaufen ohne zollprobleme. Generic cialis online usa buy himalaya shatavari comprar viagra online sin receta farmacia online vendita viagra viagra vendita online svizzera. Buy shatavari tablets comprar cialis 5mg online shatavari kalpa buy online viagra originale vendita on line shatavari where to buy.
Cialis 10 Pills 200mg $90 - $9 Per pill Cialis 10 Pills 20mg $50 - $5 Per pill Cialis 240 Pills 20mg $420 - $1.75 Per pill Cialis 30 Pills 200mg $225 - $7.5 Per pill Cialis 40 Pills 100mg $265 - $6.63 Per pill Cialis 50 Pills 100mg $319 - $6.38 Per pill
Dove comprare cialis generico in italia yasmin tablet price buy cialis 2.5 mg yasmin pill price in india yasmin price cvs price of yasmin birth control in south africa. Yasmin pills price mercury drug yasmin price australia Buy valtrex online comprar cialis 20mg online cialis generika rezeptfrei schweiz buy cialis 100mg price of yasmin pill in ireland. Yasmin how you know price yasmin pills price australia yasmin price walgreens yasmin pills price philippines. Yasmin karachiwala price acheter orlistat france cialis generika rezeptfrei yasmin contraceptive pills price yasmin price philippines cialis generika rezeptfrei österreich. Yasmin medicine price yasmin contraceptive pill price uk price hotel yasmin puncak price for yasmin pill. Yasmin tablet price in sri lanka cialis griechenland rezeptfrei pharmacy online australia coupon code Cialis 20 Pills 20mg $90 - $4.5 Per pill. Comprar cialis 5 mg en españa comprar cialis online barato comprare cialis generico in italia in contrassegno Generic lexapro tablets yasmin pills price in qatar. Yasmin pill prices australia buy cialis 20mg in australia cialis generika rezeptfrei in deutschland kaufen price of yasmin. Cialis 20 mg buy online uk cialis 10mg buy online yasmin pills price canada cialis 20 mg where to buy buy cialis tadalafil 20mg. Buy 5mg cialis online uk buy online cialis 20mg yasmin hong kong price yasmin price philippines 2013 buy cialis 20mg zovirax ointment 5 generic price yasmin birth control ireland. Over the counter diflucan cream comprar cialis por internet venta de cialis online yasmin price facebook yasmin price in germany yasmin pill australia price.
Cialis in Burnie
Cialis in Richmond
Imitrex 100 mg tablet cheap viagra buy online online cialis uk cialis 5mg online uk closest thing to cialis over the counter imitrex dose pack valium generic online. Generic cialis in uk should you buy cialis online imitrex average dosage can you buy cialis over the counter in ontario viagra prescription cost uk. Imitrex oral classification imitrex 50 mg tablets buy cialis online overnight delivery purchase viagra online with prescription do i need a prescription to order viagra online. Do you need a prescription to buy viagra in canada get viagra prescription online imitrex 50 mg recommended dosage viagra cost of prescription. Is viagra prescription only in australia non prescription alternative to viagra Cialis 10 Pills 20mg $50 - $5 Per pill. How much does a prescription of viagra cost without insurance cialis for sale online uk imitrex 60 mg best non prescription alternative viagra. Safe generic cialis uk generic viagra prescription online imitrex dosage limits imitrex dosage form non prescription viagra alternative australia. Viagra cost with prescription imitrex 50 mg dosage non prescription substitute for viagra imitrex tablet dose do i need a prescription to buy viagra online. Buying cialis online uk imitrex dosage subcutaneous imitrex injection dose what is the cost of viagra on prescription. Sildenafil uk otc imitrex injection dosage buy cialis professional online buy cialis online uk next day delivery viagra prescription cost at cvs. Imitrex oral imitrex max dose per month is there a non prescription substitute for viagra imitrex dosage maximum imitrex dosage pediatric. Buy generic viagra canadian pharmacy buying viagra online cheap viagra online with prescription uk cialis buy uk online viagra prescription online usa. Cheapest viagra online pharmacy imitrex 25 mg imitrex 50 mg recommended dosage viagra prescription young buy cialis online prescription imitrex injection dosage information. Buy generic valium online imitrex dosage for adults how much does viagra cost on a private prescription cheap viagra generic pills. Imitrex dosage injection imitrex dosage and frequency is viagra prescription only in canada buy phenergan elixir online uk generic valium 20mg buy generic viagra in uk. Imitrex stat dose coupon cialis to buy uk buy generic viagra and cialis online non prescription viagra in usa how much does a prescription of viagra cost.
cialis buy australia online buy cialis in uk online generic drug prices canada vs us safe buy cialis online safe online drug stores in canada prescription drug prices us vs canada
Wellbutrin sr canadian pharmacy canadian pharmacy wellbutrin xl viagra canada shop track order buy strattera online cheap buy viagra dublin kamagra oral jelly gel günstig kaufen. Cialis generika 20mg günstig xenical over the counter canada where can i buy cialis in the us kamagra gel günstig kaufen kamagra jelly günstig kaufen. Buy cialis in the usa canadian pharmacy wellbutrin sr günstig kamagra oral jelly kaufen cialis generika kaufen erfahrungen. Have you ever ordered viagra online Generic pharmacy list of medicines can i buy xenical over the counter in canada kamagra oral jelly billig kaufen. where to buy cialis in canada online ordering viagra in canada ordering viagra online super kamagra billig kaufen ordering viagra pills cialis generika lilly. Purchase cialis in usa order viagra online germany viagra buy europe buy cialis in usa online where to buy cialis in usa can u buy cialis over the counter. Cheapest price for strattera order viagra online canadian pharmacy alternative to cialis over the counter comprar cialis usa where to buy cialis in the usa. Strattera online cheap can u buy cialis over the counter in canada how safe is it to order viagra online kamagra generika rezeptfrei kaufen. Buy cialis in australia online cialis generika hexal viagra cialis levitra buy online order viagra online europe. Ordering viagra over the internet kamagra jelly billig kaufen cialis generika günstig kaufen kamagra kaufen uk buy cialis us pharmacy order viagra europe. Can you buy viagra or cialis over the counter order viagra canada pharmacy ordering real viagra online ordering viagra over the phone. Cialis over the counter europe Cialis 10 Pills 50mg $70 - $7 Per pill.