UASB Technology (A Clean Technology)

Biological Treatment Technologies are most often used for waste water treatment because they facilitate high reduction in pollution loads. In 1972 at the Agriculture University, Wageningen, The Netherlands, the Upflow Anaerobic Sludge Blanket (UASB) process was developed for the treatment of medium and high strength waste waters. In the last ten years, the UASB process has gone beyond development phase and has been successfully applied worldwide in many full scale plants. For the design of UASB Wastewater Treatment Plants our team of engineers and software experts has developed in-house a computer based "CADUASB" System. IRAMCONSULT has taken the initiative for successful application of this promising and cost effective technology in India for wastewater treatment under the framework of the Indo-Dutch Environmental and Sanitary Engineering Project at Kanpur and Mirzapur under Ganga Action Plan of the Government of India. Subsequently, IRAMCONSULT has widely applied this technology for treating sewage in India, in projects under Yamuna Action Plan and Ganga Action Plan. Ten UASB Sewage Treatment Plants designed by IRAMCONSULT are under construction at six locations in Haryana State. For the Ganga Action Plan Support Project, Kanpur South, under Indo-Dutch Cooperation, IRAMCONSULT is carrying out the design of the largest UASB Sewage Treatment Plant in the world, 2,00,000 m3/d (200 MLD) capacity, in association with Dutch consultants.

Advantages of UASB Process

• Lower capital costs

• Low O & M costs

• Low energy consumption

• Generation of biogas

• Small land area required

• Low surplus sludge production

• 75% COD, 80% BOD and 80% TSS removal

• Retention of nutrients like N, P & K in the treated effluent.

A Sectional view through the UASB reactor

UASB Concept

The UASB reactor has a feed inlet distribution system at the bottom and a three-phase (GLS) separator at the top. The raw effluent is distributed over the bottom and mixed with the anaerobic sludge bed through the inlet system. The blanket of anaerobic sludge is maintained in the lower section of the reactor and the incoming wastewater is forced to percolate upwards through this blanket. Contact between sludge and feed is increased by the biogas production. The sludge and the biogas are separated from the effluent in the GLS separator. The absence of mechanical mixing and sludge recirculation improve the settleability of the sludge.

UASB PROCESS' Clean Technology

• Limited production of stabilized, easily dewaterable excess sludge

• Low energy consumption

• Absence of noise and odour nuisance

• Proven technology

• Low initial investment and operation / maintenance costs

• Stable process control

• Low nutrients requirement

• Efficiency upto 90%

• Loading upto 15 kg. COD/m3 reactor Volume/day

• Methane rich Biogas production

Application of UASB Technology for wastewater treatment

IRAMCONSULT has pioneered the successful application of UASB Technology for Municipal wastewater treatment in India and till date, are market leaders. Our list of references given below speaks about our hands on design & engineering expertise in UASB Technology. We are now active in sharing this knowledge with associate consultants for application of this innovative and cost effective technology in the Middle East, South East Asia and the USA. The scope of our consulting services in this field includes preparation of detailed design and engineering drawings, tender documents, construction supervision, startup and monitoring.

List of UASB Treatment Plants for Municipal Wastewater designed by IRAMCONSULT :