Author: w10213

These common OWS issues are the result of some market trends that have developed over the years: Oil Water Separators are often an afterthought at large facilities. They are frequently used to treat storm water and plant run-off which are operations that don’t get the attention of engineers and operators nearly as much as production equipment (which actually makes you money) or even wastewater treatment (if flows for the two processes are separated).Conventional CPI Media is designed for oil separation only! They have long slanted sections which don’t properly shed separated material and very small spacing between their separator tubes, plates, corrugations, or whatever each design touts as the latest and greatest configuration. But guess what…most plants don’t separate solids from oils before an oil/water or CPI separator, they just send the solids…

Here is the best possible way to introduce this topic: Bacteria are amazingly complex, even though each has only a single cell. Bacteria make up about 95 percent of all the microorganisms in activated sludge. As long as enough nutrients are available, bacteria can multiply very rapidly by splitting into two identical cells. Some can divide in two in only 11 minutes. Many can double in 20 to 30 minutes. The rate at which bacteria reproduce in an activated sludge system is something I am asked about more often than you might expect. Though there is great variability in the rate at which bacterial cells divide, and every wastewater treatment system is different, I thought it might be useful to provide some examples. The rate at which a bacterial cell…

Over the years, climate change has played a critical role in the dwindling of natural resources. Water is one such resource which is believed to become scarce soon. With erratic and unpredictable monsoons and the alarming rate at which groundwater is disappearing, governments across the globe are taking extensive measures including rain water harvesting, wastewater treatment and desalination, to preserve and conserve water. Wastewater treatment plants play a vital role in the recycling and reuse of water. What Do Waste Water Treatment Plants Do? Wastewater treatment plants filter and sanitize water to remove pollutants and pathogens and produce reusable, clean water. This is done in different stages. In an industrial water treatment plant, the first stage rids water of solid pollutants such as plastic, metal, and paper. This is done in a sedimentation…

Anaerobic digestion is a method that helps converts organic load into a mixture gas mainly composed of methane (CH4) and carbon dioxide (CO2) through the action of bacteria. Anaerobic Digesters has been traditionally used for waste treatment, since the produced methane is a useful source of energy. The most common reactor type used for anaerobic digestion of wastewater treatment is the Up Flow Anaerobic Sludge Blanket Reactor (UASBR). In the UASBR the microorganisms are inside the reactor due to the production of the highly flocculated, good settling, compact sludge granules which develop. UASBRs are the most common system used for low to medium-high strength wastewaters containing high organic load. Anaerobic digesters are considered a complex system which usually undergoes failure. Due to such instability there arises a problem of drop…

River Ganga is consider as a most sacred and holy river in India. Millions of people have their emotions attached with the holy river and the river is a salvation and source of livelihood for corers of people and framers staying in the nearby region of Ganga Basin. Being the longest river in India, flowing through five different sates, covering the length of 2525 km’s and having the greatest contribution of 28% in the total water resource of India, planning as well as execution for its cleaning and rejuvenation is massive task. ‘Namami Gange’ is the dream project of Hon. Prime Minister Shri Narendra Modi which is progressing under the guidance of Shri Rajiv Ranjan Mishra, General Director ‘National Mission for Clean Ganga” (NMCG), which is an agency that comes under…

Shirisha Bandla is new icon of the youth now. She is the second astronaut of Indian origin after Kalpana Chawla to be the member of flying crew in space. That should give us a thought. How many women are there waste water treatment field in India? Are they truly following their passion of contribution in technical field? Waste water industry is more sidelined field than in compared with other engineering fields. The educational institutes like environmental engineering and biotechnology engineering are low rated as well. Woman workforce is mostly distributed in field of lab technicians, managerial level, director’s responsibilities and consultants. Challenges in the education particularly are enthusiasts of the mathematics, biology and chemistry are tending to choose medical and engineering fields leaving natural knowledge of environment only on the…

The environmental effects of industrial wastewater usage must be considered, not only on the land but also on our environment through water consumption and wastewater disposal. The wastewater from industries tends to get worse groundwater pollution and cause other environmental problems. This reduces the nutrients in groundwater and increases the levels of carbon dioxide in the atmosphere. Furthermore, it leads to chemical drifts, increasing the levels of harmful substances on the land where they can damage biological lifecycle and have an adverse impact on farming & agricultural activities. Thus, Industrial Wastewater Treatment is a necessity for every industrialist in the world who is generating wastewater. Our industrial use of water concerns both wastewater production and consumer demands. Therefore, that will not be wrong to say that industrial wastewater treatment is…

Happy bacteria will help to keep your biological system trouble free !!!! Every one of us gets stressed at any point of time but the level of stress differs from person to person. It is due to the reason that different person have different capacity to handle stressed situation. Some of us have acclimatized our self to the particular situation and in the same situation other will feel stressed.  Here the level of stress matters and for human it is defined by Perceived Stress Scale (PSS). Similar is the condition of bacteria in aeration tank or anaerobic tank of our effluent treatment plant or sewage treatment plant. Bacteria get stressed due to various reasons like flow based shock load, toxicity and etc. In industry it is indicated by BSI(Biomass stress…

Activated Sludge Process: Activate Sludge process is conventional process used for the treatment of Municipal and Industrial Wastewater. However there is a huge variety in the designing of the process, but the three major component involved in the process are Aeration Tank also called as a Bioreactor, followed by a Settling Tank or a Clarifier Tank where treated water is separated from the activated sludge and a Sludge Recycling System, which recycle the activated sludge from the bottom of the clarifier back to the aeration tank. Activated sludge process requires a Bioreactor (Aeration Tank) in which a high concentration of microorganism or bacteria are used to degrade organic matter and excess nutrients present in the wastewater to give you a high quality effluent in the outlet. In the Activate Sludge…

“The Engulf Technology” While sufficient research and implementation is done in fields of water, air, noise pollution control. However foul odour abatement still remains a challenge. Large petrochemical, fertilizer complexes do employ odour elimination devices like scrubbers for scrubbing the off gases. However, odour associates with decomposition, public spaces, decaying plants, dead algal mass, putrefying  manure, raw material, VOCs liberated by solvents, industrial processes, need to be addressed. Industrial clusters create a mix of odours because of collection of factories.  Foul odour is an unpleasant experience and is the cause of ill health and discomfort. For a common citizen foul odour can be smells of rotten fishes, eggs, meat or any other food, burning rubber, smoke, animal fats, ammonia, faecal waste and what not. While scientifically these are chemical compounds…