¤ Rotating Biological Contactor (RBC)
We offer various options of Rotating Biological Contactor (RBC) for simple BOD removal as well as for advanced treatment processes requiring nutrient removal. These units are used for high degree of biological treatment through multi stage series Reactors. They are attached with high density non-metallic media. The media is loaded on the centre shaft in the specially designed configuration. It is rotated through the air injected beneath the media through Coarse Bubble Aeration system. The RBC units can also be supplied with independent drive arrangement to rotate the entire packed media supported on the shaft in circular discs.

¤ Sequential Batch Reactor (SBR)
Sequential Batch Reactor (SBR) deliver excellent working and performance under most difficult conditions. The SBR design of US Filter utilizes advanced equipment and controls. The SBR design is a fill and draw type with non-steady state activated sludge process. The individual reactors are filled one by one in five distinct periods i.e. Anoxic fill, React, Settle, Decant and Idle / Waste sludge.

SBR design gives excellent process control over a large range of growth by varying the operating strategy in both Aerobic or Anoxic conditions. The key to success of its performance is the Jet Aeration system that is installed at the bottom of the tank. The efficient performance for the Jet Aeration system is critical. It is achieved through introducing the air into the aeration system which inturn intermixes with the mother liquor. Then it proceeds into the wastewater in the aeration tank. Durinf the process the compressed air is sheared into small bubbles creating large interface area for higher mass transfer efficiency between wastewater and air. The whole process is controlled through an auto control system that includes a programmable PLC controller.

¤ Membrane Bio Reactor
In the field of biological treatment, the Membrane Bio Reactor technology is the most advanced development. It provides treated wastewater for recycling in smaller footprint and under stringent discharge norms.

The hollow fiber membranes are combined with the mixed liquor to separate treated effluent from mixed liquor. Membrane is the absolute physical barrier, which ensures that suspended impurities are removed completely. Some applications of MBR include components of existing systems as well as installation of new systems. The treated wastewater produced from MBR can be even reused for cooling tower make-up. It is done to generate high purity water through Reverse Osmosis and other non-potable applications. This process helps to protect the environment by treating wastewater. It makes the water suitable for a number of applications and thus conserve precious drinking water. Biological system designed for MBR process operates at higher MLVSS concentration with higher sludge retention time. In this way it produces a low quantum of biological sludge thus reducing the sludge dewatering cost.

Triveni offer MBR Process with the help of Memcor Australia, a part of US Filter of U.S.A.. We have an exclusive association with Memcor, leader in total water management systems. Memcor's MBR technology combines the skills of Memcor's membrane specialists and the biological treatment engineers at JetTech (another element of US Filter's global expertise). It provides integrated treatment solutions with firm process guarantees such as BOD and TSS less than 5 mg/l and also removal of nutrient (nitrogen & phosphorous) coliforms.

Biological process fluid is pumped to the Membrane Operating System ("MOS"). Through a unique two-phase jet system the mixed liquor is introduced to the membrane, along with air evenly across the bottom of the tank. The membrane tank is filled by this mixed liquor and it flows upward through the membrane submodules. Thus it creates cross-flow dynamics across the membrane surface. This cross-flow constantly scours the membrane surface and checks solids dehydration at the membrane surface. A low-pressure vacuum is applied to the inside of the membrane fiber, which pulls water through the membranes and pumps the filtered water to the next process step. Solids, such as organics, most viruses, and bacteria are rejected by the membrane system. They are retained in the mixed liquor, which overflows the MOS back to the aeration tank.

Membrane Operating System is an assembly with integral membrane modules, They are arranged in rack assemblies, inserted into the membrane tank.

MOS mixed liquor distribution & recirculation jets are designed to distribute the air scour and mixed liquor flow evenly across the membrane submodules. This feature reduces the potential polarisation of suspended solids around the membrane fibers. This could be the primary reason for the failure and damage of individual fibers thus submodules. This feature offers even distribution of the mixed liquor solids to all the units of membrane so that all membranes see the same process conditions. The return recirculation of mixed liquor ensures influent comes in intimate contact with the concentrated biomass. It offers better selection of organism and added flexibility in the anoxic cycle for advanced nitrogen removal, when needed. The same jet system also enacts as an inherent portion of the membrane cleaning system. In this way it offers an efficient scouring of the membranes with chlorine cleaning solution. The integrated cleaning system helps the submodules to be cleaned in place rapidly. In addition to that the clean and efficient process vanishes the need for membrane removal from process tanks that can damage membranes and present risks to plant operators.

Some exclusive features of Memcor's MBR process are Relaxation, Maintenance and in situ CIP. It ensure consistent water quality and complete membrane life. The entire operation is PLC controlled.

¤ Powdered Activated Carbon Reactor (PACT)

Powdered Activated Carbon Treatment system has been devised by Zimpro of US Filter. They combined biological treatment and carbon adsorption into a single reactor which is far better than stand-alone activated sludge process. The use of carbon is reduced than that with granular carbon systems. The PACT systems can be applied for a number of industrial wastewater applications besides in select municipal and contaminated groundwater treatment applications. PACT reactors are broadly used in synthetic fibers, solvents, dye & pesticides, organic chemicals, plastics, petroleum refinery etc. The PACT can be installed into the existing systems as well and are designed for stringent COD and other chemical limits in the discharging effluent.

The PACT systems can be attached with Wet Air Regeneration (WAR) technology. They regenerate powdered activated carbon and recycle back to the system that reduces the amount of spent carbon and as such reduce carbon disposal. WAR is a self sustaining process due to exthormic reaction except initial heating requirement to start the process.

Send Online Enquiry