Category Archives: Wastewater treatment

Sri Lanka: new partnership tackles fecal sludge management

Septage disposal. Sri Lanka/Nuwara Eliya sanitation project, 2008, Photo: Flickr/USAID.

An international research institute is helping the government of Sri Lanka to improve septage management in the country.

On 8 May 2013, the Colombo-based International Water Management Institute (IWMI) and the Ministry of Water Supply and Drainage signed a Memorandum of Understanding that provides a collaborative framework for sustainable septage management in Sri Lanka.

IWMI will contribute research data for the drafting of a septage management component of the national sanitation policy. The Ministry will lead implementation of the policy through an advisory committee headed by Minister Dinesh Gunawardena.

Only about 3% of Sri Lankans have a sewerage connection while the rest rely on latrines and septic tanks for sanitation. Safe disposal of septage (fecal sludge) is a problem because of a lack of treatment facilities in large parts of the country.

IWMI is studying a new approach in cities around the world, which treats the sludge so that it can be safely reused as agricultural fertiliser. With the rising costs of imported fertiliser, such an approach would not only benefit farmers but also allow better sanitation and environmental protection for all.

Related news:

  • The business of the honey-suckers in Bengaluru (India), E-Source, 27 Sep 2012
  • WASHplus Weekly: Focus on Fecal Sludge Management, Sanitation Updates, 30 Nov 2012

Related web sites:

 Source: IWMI, 8 May 2013

Renewed research call for faecal sludge secondary treatment options in Bangladesh

Reblogged from Sanitation Updates:

IRC International Water and Sanitation Centre announces a renewed research call for:

Faecal sludge secondary treatment technologies for challenging settings

This call is part of the BRAC WASH II programme in which EUR 1.5 million will be used for innovative research, tendered to consortia of leading European and Bangladeshi research organisations.

The planned duration of the faecal sludge research project will be 18 months.

Read more… 82 more words

India, Bengaluru: the business of the honey-suckers

Indigenously developed honey sucker in Bengaluru (Bangalore), south India. Photo: Vishwanath Sankrathai

A new IRC paperexplores some contributions being made by honey-sucker tanker operators — that renders a small-scale sanitation service informally and within the private sector — on waste (faecal) extraction and, in some cases, reuse. Operating outside the legal framework of waste management, this paper provides preliminary insight into the limitations and potentials of the ‘honey-sucker business’ as a sanitation service model, based on selected experiences in Bengaluru (India).

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India, Bengaluru: commercial productive use of faecal sludge

Waste is a resource in the wrong place. People who have no sewer connection do go to the toilet though urban authorities seem to think differently given the neglect of the multitude of sanitation self-service models that have emerged in many cities.

During a webinar, which was organised on 2 May 2012, Joep Verhagen of the IRC International Water and Sanitation Centre presented the results of a case study, which investigates a model that is based on the productive use of faecal sludge by farmers in and around Bengaluru (Bangalore), the capital of the Indian state of Karnataka. This particular service has emerged without any technical or financial support.

For more IRC webinars go to: www.irc.nl/page/69625

Japan: selling sewage to Australia

Japan has an unlikely new export product:  the sewage it normally dumps into rivers or the sea. The first buyer is the Australian mining industry. Could this also become a new money earner for developing countries? Well, no. The “export quality” sewage in question is effluent from high-tech Japanese wastewater treatment plants.

An innovative trade experiment will take place in the autumn of 2010. Australian ships with iron ore for Japan, will return, not with seawater in their ballast tanks, but with highly treated sewage water.

Australia is facing a water shortage and mines need a lot of (expensive) water for their operations. If all goes well, the cost of Japan’s sewage water will be less than the AU$ 4 to AU$5 (US$ 3.50 – US$ 4.40) per ton that the mining companies currently have to pay.

Companies involved in the experiment, including Hitachi Plant Technologies Ltd., plan to start sewage water exports on a commercial basis in fiscal 2012. The state of Western Australia, home to major mining companies such as Rio Tinto, has agreed to cooperate in the experiment.

In Japan, about 14 billion tons of treated sewage water is produced every year, but only 1.5 percent of the amount was reused in 2007.

Source: Dai Narusawa, Asahi Shimbun, 07 Jul 2010

Indonesia: ADB extends US$ 35 million for sanitation improvement in Medan and Yogyakarta

The Asian Development Bank (ADB) is extending a US$ 35 million loan to help Indonesia rehabilitate and expand sanitation facilities in the cities of Medan and Yogyakarta.

Medan, the capital of North Sumatra province, and Yogyakarta, the capital of Yogyakarta province, have a combined population of around 4.5 million people.

The loan will be used to build around 280 communal sanitation facilities in poor areas in the two cities, as well as two wastewater treatment systems for low-cost housing development projects in Medan. Sewerage systems will be rehabilitated and expanded with up to 28,000 additional household connections. The Metropolitan Sanitation Management and Health Project will also provide support to mobilize community involvement in the planning, operation and maintenance of communal facilities, and will ensure women are strongly involved in the process.

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China, Wuhan: ADB supports wastewater and lake management project

The Asian Development Bank (ADB) is supporting an urban environmental initiative in Wuhan municipality in the People’s Republic of China (PRC) that it says could be a model for sustainable management of wastewater sludge in the country.

The ADB has approved a $100 million loan for the Wuhan Urban Environmental Improvement Project that will involve the treatment and disposal of sewage sludge, and the rehabilitation of polluted lakes and water channels, benefiting up to 3 million urban residents in the municipality.

Wuhan, the capital of Hubei Province with a population of nearly 9 million people, is successfully treating most of its wastewater through the support of previous ADB assistance. However, the huge amount of sewage sludge generated by the treatment plants – estimated at 657 tons a day – poses growing environmental and health hazards.

The project will incorporate a number of innovative and integrated measures designed to improve the environment and support the government for a more sustainable urban development master plan.

The project will introduce a decentralized approach by building small on-site sludge units integrated with the city master plan. Sludge from Wuhan’s wastewater plants will be dried and treated using biogas from an ADB-financed wastewater facility and steam from a thermal power plant. In addition, the dried sludge will be used as a soil conditioner and filler for building construction materials, supporting the PRC’s push to create sustainable local economies that reduce, reuse and recycle waste. The project will advocate for beneficiary sludge treatment and utilization.

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The project will also help restore Wuhan’s polluted lakes and water channels. Sediment dredging and slope protection work will be carried out, while flood control gates and a water pumping station will also be built. A storm water treatment system will be established for Yangchun Lake, artificial wetlands will be created, and lakes will be planted with aquatic plants.

[...]

Wuhan’s lakes and rivers, which make up 25% of its urban area, have become seriously polluted by agricultural activity and urban construction, with just 38 of 100 lakes in the mid-20th century still in existence.

An environmental public awareness campaign targeted at lakeside businesses, communities and schoolchildren will be carried out, while training and other support will be given for wastewater and sludge treatment operation and maintenance.

ADB’s assistance makes up nearly 20% of the total project cost of about $501.8 million. The Wuhan Municipal Government is providing counterpart funds equivalent to $125.4 million, while the Agricultural Bank of China is supplying a 10-year loan of $276.3 million. The municipal government is the executing agency for the project which is expected to be completed by December 2014.

Source: ADB, 01 Jul 2010

China, Songhua River Basin: ADB providing $146.6 million loan to privatise and improve water supply and wastewater treatment

The Asian Development Bank (ADB) is providing equity and loans of up to $146.6 million to a company planning to improve water supply and wastewater treatment facilities in the polluted Songhua River Basin in the northern part of the People’s Republic of China (PRC).

Tongfang (Harbin) Water Engineering (TWE), an affiliate of publicly listed environmental technology firm, Tsinghua Tongfang Co. Ltd. (TTC), is looking to build, rehabilitate, and privatize water supply and treatment plants in the basin, which is home to 62 million people.

Massive rural-urban migration in the PRC over the past 30 years – the largest and most rapid in history – has put immense strain on public services in towns and cities. The discharge of untreated wastewater into rivers has caused widespread contamination, resulting in a growing shortage of safe drinking water. The Songhua River Basin, the third largest river basin in the PRC, is one of the country’s most polluted.

The PRC government is targeting a clean-up of the basin. A Songhua River Basin Water Pollution Prevention and Control Master Plan has been drawn up, supported since 2005 by ADB through technical assistance and loans totaling around $400 million.

“Treating more wastewater and improving the supply of potable water will reduce pollution in the urban environment around the Songhua River Basin, and improve the health and quality of life for millions of residents,” said Philip Erquiaga, Director General of ADB’s Private Sector Operations Department.

TWE has earmarked capital spending of CNY3.5 billion ($512.6 million) from 2009 to 2011 – partly financed by ADB – to treat an additional 2 million tons of wastewater a day. Private investors and local commercial banks are expected to provide the remainder of the funding needs.

“The cost of developing water infrastructure is huge and this project shows how the public and private sector can work in partnership,” said Paul Heytens, ADB’s Country Director for the PRC. “Private sector participation in services usually provided by municipalities or the central government can enhance efficiency and lead to the use of newer technologies.”

ADB’s equity investment will be $10 million, or 15% of the paid-up capital of TWE, whichever is lower. The main A loan of CNY250 million ($36.6 million) carries a 10-year term, with a two-year grace period. A B loan of up to $100 million, involving international commercial banks, will also be extended, with terms to be decided later.

Source: ADB, 15 Jun 2010

Indonesia, Jakarta: slums struggle with sanitation

In Jakarta’s northern Muara Angke coastal area, a lack of access to piped water has forced people to bathe and wash clothes using murky grey water from fish ponds.

“I don’t feel disgusted at all. I’ve gotten used to it,” Ibu Nunung, who shells mussels for a living, told IRIN outside her house in Muara Angke Blok Empang, a slum in the area.

Nunung said residents, many of whom live on less than US$2 a day, had to fork out the equivalent of up to $1 daily to buy clean water for drinking and cooking from vendors transporting water in jugs.

She admitted that itchy skin was a common problem among locals.

Jakarta, a city of 10 million people, is dotted with slums like the one in Muara Angke.

Many people live without running water in shanty towns built in the shadow of gleaming skyscrapers, and gutters are clogged with rubbish, causing foul smells.

“Poor sanitation, lack of access to clean water, overcrowding and poor nutrition are among [the] major problems in Jakarta, and the government’s commitment is needed to address these problems,” said Erlyn Sulistyaningsih, a project manager with Mercy Corps Indonesia.

Less than 50 percent of Jakarta’s residents have access to piped water, according to the NGO, which runs water, sanitation and health programmes in the city.

More than 75 percent of the city’s residents rely on shallow groundwater, but an official study found that 90 percent of shallow wells are contaminated with coliform bacteria or heavy metals, Mercy Corps said in a 2008 publication entitled Urban Poverty Reduction Strategy.

Jakarta produces 6,000 tons of waste each day, but can only manage 50 percent of it, it said.

Sulistyaningsih heads a project aimed at increasing access to sanitary facilities, including toilets, providing access to clean water, and educating child caregivers about nutrition in several villages in Jakarta and neighbouring Bekasi District.

“Our programme seeks to prevent diseases which are spread by the faeces-to-mouth route, and we hope it can be replicated by other communities,” she told IRIN.

Premature deaths

A study released by the World Bank’s Water and Sanitation Programme in 2008 revealed that only 57 percent of Indonesian households had easy access to a private and safe place to urinate and defecate in 2004.

Poor sanitation, including poor hygiene, causes at least 120 million disease episodes and 50,000 premature deaths annually, the report said.

The study also found that poor sanitation costs the Indonesian economy $6.3 billion per year, or equal to 2.3 percent of the country’s gross domestic product.

Nugroho Tri Utomo, head of the subdirectorate of drinking water and waste water at the National Development Planning Agency, said part of the problem was a lack of funding, with spending on sanitation accounting for only 1 percent of the city’s budget.

“Both the general public and authorities have yet to realize the importance of sanitation, not only to health but also to the economy,” he said.

Improvement plans under way

The government last month launched a programme to provide access to adequate sanitation to 80 percent of urban households by 2014.

The Settlement Sanitation Development Programme, estimated to cost $5.5 billion, aims to develop waste water services in 226 cities, build sanitary landfills serving 240 urban areas, and stop inundations in strategic urban locations covering 22,500 hectares.

Under a separate programme called the National Strategy for Community-Based Total Sanitation, launched in 2008, the government aims to provide access to sanitation and introduce more effective water treatment methods in 10,000 villages by 2012.

See also:

Source: IRIN, 16 Apr 2010

China, Ningbo: World Bank loan addresses rural waste water management

The World Bank has approved a loan of $50 million to China to improve rural wastewater management and township infrastructure in Ningbo Municipality.

Ningbo Municipality is a major city in the southeastern coastal zone of China, about 300 km south of Shanghai, and has a population of 5.65 million. Despite rapid economic growth since the late 1970s, Ningbo is facing increasing urban-rural disparities including per capita income of rural residents much below than that of urban residents, fewer economic opportunities, inadequate basic infrastructure, shortage and low quality of drinking water supply, and insufficient sanitation services in the rural areas. The Ningbo Municipal Government is working to implement the New Countryside Development (NCD) Program, a national strategy aimed at reducing the urban-rural disparity, balancing urban and rural development, and promoting human-centered, quality-based, resource-saving and eco-friendly growth in the countryside.

In support of the municipality’s efforts, the Ningbo New Countryside Development Project will focus on improving rural waste water management in about 150 selected villages in Ningbo Municipality and enhancing infrastructure development in Chunhu Town of Fenghua City by financing construction of an access road, water supply networks, and wastewater collection and treatment facilities. In the meantime, the Bank will provide technical assistance to build local capacities.

The total project cost is $107 million with the World Bank contributing about 47 percent.

The World Bank has a close working relationship with Ningbo Municipality. In recent years the Bank financed a number of projects in Ningbo, including the Ningbo Water and Environment Project, Zhejiang Urban Environment Project, and the Global Environment Facility-supported Ningbo Water and Environment Project.

For more information go to the Ningbo New Countryside Development Project page

Source: World Bank, 25 Feb 2010