Chemoautotrophic ammonia oxidizing bacteria (AOB) have the metabolic ability to oxidize ammonia to nitrite aerobically. This metabolic feature has been widely used, in combination with denitrification, to remove nitrogen from wastewater in wastewater treatment plants (WWTPs). However, the relative influence of specific deterministic environmental factors to AOB community dynamics in WWTP is uncertain. The ecological principles underlying AOB community dynamics and nitrification stability and how they are related are also poorly understood.

The WEPA Outlook is the flagship publication of WEPA which includes basic information on the water environment and its management in each WEPA partner country. The Outlook 2012 consists of three main chapters. Chapter 1 presents the result of the analysis of institutional frameworks for water environmental management in each country.

The Central Pollution Control Board in association with State Pollution Control Boards and Pollution Control Committees have established a network of 1085 Water Quality Monitoring Stations along various river stretches. Water quality data in respect of Bio-chemical Oxygen Demand (BOD) has exceeded the desired water quality criteria (

The Central Pollution Control Board (CPCB) in association with State Pollution Control Boards (SPCBs) and Pollution Control Committees (PCCs) have established a network of 1085 Water Quality Monitoring Stations (WQMS) along various river stretches. Water quality data in respect of Bio-chemical Oxygen Demand (BOD) has exceeded the desired water quality criteria (

This new report on the status of water quality in India by CPCB shows that organic pollution of aquatic resources continues to be predominant and says that discharge of untreated domestic wastewater from urban areas is the main cause for this.

In this new briefing paper Centre for Science and Environment (CSE) focuses on state of waterbodies, conservation and management in India and provides a review of the existing policies, acts and laws to tackle loss of urban water bodies.

Field observations conducted at Kanpur, to analyze the ration of biochemical oxygen demand (BOD) contributions by benthasludge to the overlaying waters of the river Ganga were presented in part 1 of this paper. This data was later correlated to the data obtained under different conditions of operating and process variables in the laboratory. Observations were made at 3 sections along the river downstream of an outfall discharging partially treated wastewater.

Ranchi, Jan. 15: A first-ever water pollution audit carried out by the Comptroller and Auditor General (CAG) has pegged Jharkhand at the bottom of the performance chart with most river conservation projects lying incomplete in the state. According to the report, Performance Audit of Water Pollution in India, the Ganga, Damodar and Subernarekha were selected for pollution abatement projects in Jharkhand under the National River Conservation Programme (NRCP), which was launched in 1995.

This paper examines the use of constructed wetlands for water purification. The introduction begins witha brief overview of wetlands: their nature and services offered. These wetlands are ecoststems with water that is static or flowing and characerized by emergent , floating and submerged aquatic vegetation. Some of the services provided by wetlands are fish and fiber, water supply, water purification, flood regulation, recreational opportunities and tourism. It then details the importance of wetlands for water purification.Toxins enter the wetlands through farms, factories and runoff.

Vaitarna among most polluted rivers in state
Clara Lewis, TNN | Dec 23, 2011, 06.22AM IST
MUMBAI: Vaitarna, which provides drinking water to Mumbai, is among the most polluted rivers in Maharashtra. The only solace for Mumbaikars is that the BMC has one of the finest water treatment plants in the country. Residents of other towns are not so lucky.

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