lyseconcept has developed a scientific paper that defines that: anaerobic does not exist on earth, anaerobic can not exist on earth. for such an environment is created that should not be surrounded by a medium-Aerobic-. and the temsp expressed in "period of time" is long enough to allow him to date info on severe create stabilize perpetuate. out this is not the case and the conditions present in a wastewater system by the flow of a continuous flow. I forward this document to anyone wishing to inform. Sanitation was there not long ago a simple and natural and final thing. Today it is no longer, why? because the notion of 'BIOLOGY' no longer exists
It should be known that the principle says “activated sludge” does not exist. From the moment when a Biological element becomes - mud - it loses this biological characteristic. Your diagram describes Ci above shows it perfectly since those Ci pile up. In a circle closed in putrefaction there is no more oxygen. More oxygène=plus of vie=plus of micro alive oragnisms: it is a dead product. And more you will try to bring oxygen there by brewing it (activated sludge) and more it will oxidize. Two years of studies on these problems enabled us to define this theory. In more one essential concept does not appear at all in your talk: the biological aspect of the effluent. you seek a 'biological' solution with an element which lost this concept. Reassure it is the world case of the treatment of waste waters. The Biological cleansing solves all these problems even further while going since after the treatment the water rejection becomes productive because it is sent on a vegetalized discharge system http://www.lyseconcept.fr, http://www.creabpa.fr E-mail: lyseconcept@gmail.com for a personalized proposal
Some of Operational causes of bulking include 1. low dissolved oxygen in the aeration tank 2. insufficient nutrients: Especially quantity of nitrogen and phosphorus important, also absence of trace element cause bulking. 3. widely varying organic waste loading
but the limited dissolved oxygen has been noted more frequently than any other cause for sludge bulking. If the problem is due to limited D.O. Aerating equipment should operate at full capacity. At least 2 mg/L of dissolved oxygen in the aeration tank (under normal loading conditions) should be maintained.
Hello, Please send a water analysis before and after treatment. Also send a P&ID with tank volumes,aeration system and temperatures. What colour is the sludge? Do you have DO probes? Kind regards Rick Wadley Vortex Water
Without a complete overview about your wwtp, but only on the base of tipology of your cronic bulking and wastewater process, I would like to say that could be an high level of soluble COD and high F/M. So, you have face (one or more) to this possible actions: 1) Increase MLSS with a lower flow of waste sludge, paying attention to SS out of secondary clarifier. 2) Make possibile a differentiation of level oxygen distribution by creating an aerobic selector (more DO) able to face the first high level of organic load. 3) Make possible obtain a lower organic load with a different pretreatment of wastewater 4) Make possible obtain an higher DO level by facing an upgrading of aeration system.
A more depht analysis on load data and on Microfauna and Filamentous Bacteria may be more suitable to understand how your bioreactor work..
Another vote that low oxygen is BOD, COD, DO related, another angle is that either a new group of bacteria have gotten in somewhere, or as is happening now, check for glyphosate, the main ingredient of Roundup now found commonly in foods, it has a detrimental effect on beneficial bacteria and can tip the balance on bacterial populations quite easily, very potent and for example is preferential to Salmonella.
Low aeration basin dissolved oxygen (DO) concentration for the applied organic loading (F/M) leads to filamentous bulking by several filaments . The required aeration basin DO concentration to prevent "low DO bulking" is not a constant, rather, is a function of the F/M rate . Simply, higher bulk DO is required to prevent the growth of these filaments as the F/M increases, due to faster oxygen use within the floc at higher F/M, oxygen depletion inside the floc, and the need to maintain aerobic conditions in the interior of the floc. A higher bulk DO concentration increases the diffusion of oxygen into the floc interiors.
there is no short answer to your problem. In order to understand the problem, will need to know the process used in this particular WWTP. Is it membrane based or is it anaerobic digestion...? What is you operating MLSS and is BOD, COD, DO and tank sizes? How often do you waste the sludge and how much?
So all these details needed before proposing any solutions.