Upflow filter – Constructed wetland – July 2019

Upflow filter – Constructed wetland – July 2019
  • Organization : Practical Action

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Lieu de l’étude de cas

Cox's Bazaar Bangladesh

Principaux objectifs de traitement

BOD/COD reduction, Pathogen reduction, Solid/liquid separation, TSS and TDS reduction

Espace requis

0.2USD/m3/jour

Description du processus de traitement

Put in practice measure and predispositions for eventual upgrade/decommissioning Upgrade/decommissioning methodology (internal team or contractor, tender or employment procedure and challenges) Upgrade/decommissioning methodology and resources Resources temporally needed for upgrade/decommissioning (electricity, water, special vehicles, access permission, legal permission) Needed remediation activities in case of decommissioning Specific security and safeness during upgrade/decommissioning (type of PPE, specific rules, responsibilities, challenges)

Description du contexte d’urgence

The humanitarian crisis caused by escalating violence in Myanmar’s Rakhine State has been causing suffering on a catastrophic scale. According to UNHCR estimates, as of 31 December 2019, more than 910,619 (as of UNHCR_Population Factsheet – 20190515) forcibly-displaced Myanmar nationals are residing in Bangladesh. Different organizations have been providing humanitarian aid to these refugees including in the areas of water, sanitation and hygiene (WASH) in the makeshift camps as well as in host communities. Infrastructures and facilities – both those preceding the 2017 influx and those established in response to the influx – are already stretched due to population density. Rohingya community live in bamboo and tarpaulin made temporary shelters. In average, each family consists of 4-5 members and there is more than 50% women and children in the camp considered as vulnerable group. Out of the 1.2 million people in need of WASH services, thus far the sector has only been able to reach 768,000 people with access to safe sanitation. At the initial stages of the emergency, shallow latrines were constructed, many of which have now been decommissioned. New latrines have been established but some of the emergency latrines are still in use. While septic tanks have been introduced in the camps, space is limited. Combined with limited partner technical expertise in faecal sludge management, this has greatly inhibited the collection and treatment of waste. Daily volumes of faecal sludge removed are much lower than the accumulation rate. It has been stated in Rohingya Humanitarian Crisis Joint Review Plan 2018 (JRP) that due to congestion in the camps, the Sector has been struggling to identify land for final disposal and treatment of faecal sludge. To address faecal sludge management, multiple and phased technical solutions are underway. In response to the above scenario, Practical Action has intervened in Rohingya camps with a particular focus on faecal sludge management (FSM) which was initially overlooked by most agencies and which has now become a prime focus for Rohingya Response WASH Sector. Since November 2017 (immediately after the influx), Practical Action (PA) has established 18 FSM sites in five different camps (7, 8E, 8W, 9 and 15) which are adaptive to the camp environment. Through these FSM sites, Practical Action has desludged more than 3,500 latrines in these camps which resulted in more than 70,000 beneficiaries. With the existing PA FSM plant operation and coverage in above mentioned camps, PA has extended its service on 108,000 beneficiaries with 10 new FSM plants more along with hygiene promotion services at Ukhiya upazila in Cox’s Bazar district. Practical Action has also extended its technical support to other WaSH agencies i.e. World Vision, Gono Unnoyon Kendro, Christian Aid and Helvetas with 10 FSM plants in camp 8E, 13, 14 and 15. The FSM plant of three chambers adopting up-flow filtration technology has become a reliable method for the regular desludging of latrines as well as for engaging Rohingya community as FSM sanitation workers. With a proven filtration system, safe water quality (in comparison to other FSM practices in camps), operation friendly plant design and higher level of community engagement (deploying refugees from the Rohingya community as sanitation workers), Practical Action has stepped in camp 7, 8E, 8W, 9, 13, 14 and 15 of Kutupalong and Balukhali makeshift settlements in Ukhiya Upazila, Cox’s Bazar District. Practical Action FSM plant optimization has been affected by the absence of associated behaviour change communication (BCC) in terms of reaching its desired sanitation impact. As such, a BCC component has now been designed and integrated into the project extension period. According to a need assessment undertaken in Camps 7, 15 and 8W, there is a huge gap in terms of regular BCC interventions with a focus on open defecation. The Rohingya settlements are quite large to manage in single hand. Various consortiums are activated to response in Rohingya crisis for example camp management, WASH management etc. The consortiums are working in a collaborated way to mitigate the sufferings of the Rohingya people with their resources. WASH sector has a close collaboration with Camp Management to ensure safe water and sanitation accessibility for all Rohingya people. Below is mentioned some local and international actors with active role in the community:

Site Management Agency: WASH NGOs: WaSH Governmental agency:
DRC, BRAC, CARE, Christian Aid Practical Action, TDH, NGO-F, VERC, WVI, BRAC, Friendship, MSF-H, Mukti Cox’s Bazar DPHE, Office of Civil Surgeon
  According to the Health and Wash joint reports, Acute Water Disease cases such as Diarrhea, Cholera, Dysentery, Typhoid etc. are found in camp level. Practical Action is much aware of the wash related diseases and so thus has initiated environment friendly faecal sludge management services with hygiene promotion for the safely disposal of human excreta in camps. PA has also taken necessary measure to ensure health and personal safety for the staffs and sanitation workers.

Les indicateurs

Le récit

Leçons apprises

The challenges faced by Practical Action were the following:

  1. Place selection:
  • The refugee community interrupts the work for FSM plant construction
  • Availability of suitable place
  • Authority or other WASH partners hinders activity as sometimes it collides with them
  • It is difficult to construct in uphill areas
  1. Water crisis as water is needed for desludging.
  2. Carrying and handling of equipment in uphill areas
  3. Materials carrying in muddy road
  4. Slab of the burial pits are broken/ stolen.
  5. Security challenges for the protection of the plant area.

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