Over the last decade there has been increasing interest in bio-tank oxidation processes for the oxidation of minerals. So far, aerated stirred tank reactors have been used for these processes. From in house desk studies and experimental work caried out on pilot plant scale and full scale by Paques, it can be concluded that the CIRCOX ® air-lift loop reactor is a viable alternative to stirred tank reactors for the bio-oxidation of minerals. The main advantages of the CIRCOX ® air-lift loop reactor over the conventional stirred tank reactor are lower capital and operational expenditures.
Monitoring of typical pumps and aerator in a water treatment plant
The wireless vibration network of Wi-care system consists of the communication between three components; the transmitter, the range extender and the receiver. The transmitter is fixed on the machine and transmits the vibration and the temperature data at the measurement point. The second element of the Wi-care wireless network is the range extender, its function is to transmit vibration and temperature data over long distances to the receiver. The third part of the communication path is the receiver/gateway which...
Improved Aeration Eliminates Odor in Mexicali, Baja California, Mexico
Overview: The State Commission of Public Services of Mexicali (CESPM) is a Decentralized Public Organization of the State Government of Baja California in Mexico. CESPM oversees the planning, construction, operation, and maintenance of the potable and wastewater infrastructure in the Mexicali municipality. The Zaragoza Wastewater Treatment Plant is the CESPM’s largest plant with a design capacity of 1,300 liters per second, or nearly 30 million gallons per day. The plant treats 55% of the wastewater...
Water mixing in waste lagoons
Man-made lagoons have been used worldwide for the treatment of domestic and industrial wastewater, it seems, forever. All waste lagoons were first designed and thoughtfully planned considering their locations, soil makeup, and waste reduction processes prior to being implemented. The biological process of organic waste reduction is always a consideration of waste lagoon designs. There are three biological concepts considered for waste lagoons - Anaerobic lagoons, commonly at least 10 feet deep, have no dissolved...
The elimination of fecal coliforms and e. coli in lagoons
Many horse racetracks throughout the world are designed to drain water from the track into a lagoon that is located in the infield of the track. Due to the track being predominantly used for horse racing, there is a high amount of fecal coliform, especially of the Escherichia coli species, bacteria in the water that drains from the track. During the racing season, fecal coliform and E. coli counts increase dramatically and the subsequent drainage of these lagoons can become a problem for the receiving waters.In...
Eliminating sludge islands in your wastewater lagoon
Old municipal and industrial wastewater lagoons have the tendency to build islands of sludge at various locations around the lagoon. It is most common for older lagoons to build such islands wherever wastewater enters the lagoons. Of course, this is because the solids entering the lagoon have enough weight to fall out of the water as flow velocity is reduced, so the solids pile up just after entering the lagoon. Sometimes these sludge islands will build very near a surface aerator, because the violence of the...