COMPLETED Digesters & Expansion Chambers
COMPLETED Digesters & Expansion Chambers
PHASE I and PHASE II Digesters
PHASE I and PHASE II Digesters
Biogas USAGE
Biogas USAGE
AUTOMATED Wastewater Disinfection Plant, Gas Compression & Supply
AUTOMATED Wastewater Disinfection Plant, Gas Compression & Supply AUTOMATED Wastewater Disinfection Plant, AUTOMATED Gas Compression & Supply
Final Water Treatment for Re-Use
Final Water Treatment for Re-Use
Campus Irrigation Outcome
Campus Irrigation Outcome
Two Digesters and Feed Chambers
Two Digesters and Feed Chambers
FEED CHAMBER with provision for hospital organic waste
FEED CHAMBER with provision for hospital organic waste
Polyclinic INCINERATOR using Biogas Supply
Polyclinic INCINERATOR using Biogas Supply


 The biogas plant is simple, requires minimal maintenance during the service life of about 60 years.


 The technology has proven very suitable in tropical climates like Ghana because the minimum operating temperature is easily attainable throughout the year without the need of induced heating at any time.  Thus, making the biogas generation sustainable.


 The sludge build-up is insignificant. There is no dislodging in all operating plants during the plant service life. 


 The materials of construction prevent leachate into ground water resources. The impermeability makes the plant very suitable for waterlogged areas and other soil textures compared to septic tanks. 


 The sustainable application of biogas plants for wastewaters treatment and recycle has been amply demonstrated in Ghana in the most notable Ashesi University.

The capture and use of biogas thus avoids direct emissions of the high global warming gas into the atmosphere from all septic tanks as well as reducing emissions from deforestation and degradation

The plant thus contributes to the implementation of Ghana’s nationally determined contributions (NDCs) towards the enhanced and ambitious global climate mitigation effort under the Paris Agreement

Environmental, Health and Sanitation Benefits

Our plant

achieves water, sanitation and health (WASH) benefits in eliminating occasional overflow of septic tanks, dislodging and off-site disposal of untreated waste-water, and microbial contamination of surface and underground water sources.

GHG emissions reduction and Climate mitigation impact

The methane component (about 50%) with high global warming potential is converted to carbon dioxide with lower global warming potential

The project has a potential to achieve a net carbon emissions reduction from methane capture and use as clean fuel

Ashesi Biogas Plant in Pictures


 60,000 to 80,000 litres of wastewater daily

for Re-Use in irrigating and greening the University Campus

The Ashesi Biogas Plant

treats and delivers


Pheebe's Consult supports the UN Environment and the African Ministerial Conference on the Environment (AMCEN) in Turning Environmental Policies into ACTION through Innovative solutions  


Pheebe's Consult Limited has been officially granted a LICENCE to

Install and Maintain Biogas Systems in Ghana




by Energy Commission, Ghana

Ashiaman Biogas Plant in Pictures

HIGHLY AUTOMATED Wastewater Treatment
& Biogas Recovery and Supply

Pheebe's Consult calls for stronger action against discharging untreated sludge from septic tanks into the Sea (Large marine ecosystems) and water bodies, which act as land-based sources of pollution and leads to SDGs and Climate Change-related challenges 

Pheebe's Consult through its Advanced Biogas Plants as Renewable energy generation sources in Ghana and other developing countries is promoting Sustainable Development Goals (SDGs) and contributing to reducing Global GHG Emissions under the Paris Agreement




The IBWT plant also produces a nutrient-rich liquid fertilizer for effective landscaping and reduces equivalent amount of fresh water demand

The IBWT plant achieves compliance to Effluent Discharge Quality Standards of the WHO and Environmental Protection Agency, Ghana

[Integrated Bio-waste and wastewater Treatment (IBWT)]

SDG 3: Good Health and Wellbeing:- eliminates preventable and communicable diseases.

SDG 9: Industry, Innovation, and Infrastructure:- Our IBWT plant make use of local materials; have potential to drive growth of local industries, the penetration of local endogenous technologies and innovative biological treatment systems. 

SDG 6: Clean Water and Sanitation:- effective disinfection and reuse addresses sanitation challenges in the septic tank practices.

SDG 7: Affordable and Clean Energy:- biogas produced is a renewable and clean energy source used for cooking, heating and incineration, and power production.

Constructed Ashesi University 4x80 (320) cubic meter IBWT plant and auxiliary systems. In operation since 2015. Installed to serve projected growth of the University to 2000 students over the next 10 years; The plant comprises anaerobic digesters, gravity and biological filtration systems, de-odorization, and disinfection system. The project continues to deliver treated waste water quality for reuse for landscaping and greening of the Ashesi University campus. The biogas is captured, compressed, and delivered for as cooking fuel to one of the campus restaurants. The treated wastewater quality continually comply with WHO and Ghana EPA guidelines. 

Ashaiman Poly-Clinic biogas plant project installed 120 cubic meter in 2012. The plant produces biogas for firing the Poly-clinic incinerator on continuous basis; and facilitate the management of contaminated, non-hazardous solid waste generated in the poly-clinic. 
In addition to sewage treatment, the IBWT digesters are employed for appropriate sanitary disposal of placenta waste for increased biogas production. The biodigesters has thus substituted the use of placenta pit in the poly-clinic and burial on site in the community traditional birth attendants (TBAs) and in maternity homes in the municipality. The plant thus improved sanitation, reduced air pollution, health-related impacts of placenta disposal.


1. Ashesi University Biogas Plant

2. Ashiaman Poly-Clinic Biogas Plant


The inappropriate handling and disposal of different waste types, namely:  human waste (sewage) and wastewater (e.g. greywater) discharged from hotels, real estates, academic institutions, public toilets as well as biomedical waste from hospitals and polyclinics contribute significantly to underground and surface water contamination, pollution, sanitation challenges, and public health-related problems in developing countries.  

The challenges of poor water quality and sanitation due to pollution of water bodies and the marine biota in coastal cities from indiscriminate defecation, refuse disposal and poor waste management are generally attributed to inadequate environmental sanitation infrastructure and services.

Most built environment facilities generally integrate below ground septic tanks for the handling of the sewage and the greywater for disposal. The key disadvantages of this traditional septic tank operation include the loss of the potential generation of renewable energy (biogas) on continuous basis for cooking fuel and power generation from anaerobic digestion treatment of sewage and bio-medical solid and liquid waste. The septic tank practice further prevents the opportunity of incineration of non-hazardous materials on site with the biogas generated as fuel, as well as recovery and reuse of plant ammonia nutrient to meet non-critical applications of the treated waste water such as irrigation and landscaping of facilities.


The Commercial Wastewater Handling Problem

Biogas generated from bio-digestion is a renewable and clean energy. The capture and use as fuel actually reduces greenhouse gas (GHG) emissions and contribute to climate change mitigation and combat of global warming


A leading Green innovative technology for Sewerage (Human waste), other bio-waste and Wastewater management

Success stories

Pheebe’s Consult has been involved in biogas plant project development, installation, and maintenance since 2008 and has further improved the traditional biogas plant to an Integrated Bio-waste and Waste-water Treatment (IBWT) plant. 
The IBWT plant goes beyond the traditional bio-digesters being constructed currently. The IBWT innovation include:

               (i) bio-digester for sewage;  

               (ii) biosieves for grey waste-water treatment; 

               (iii) disinfection of treated wastewater for continuous recycle;

               (iv) water conservation through the recovery of the nutrient-rich treated waste water for

                     irrigation, for landscaping and greening of facilities; and

               (iv) Biogas capture, compression and delivery at 4-6 bar pressure to remote end-user

                    locations for use as clean energy for cooking or power generation depending on the

                    population served.


Our Biogas plant

make our Clients, Compliant with

Effluent Discharge Quality Standards of the

WHO and Environmental Protection Agency, Ghana

SDG 12: Responsible consumption and production:- reduces consumption of natural resources (biomass for firewood and charcoal) and prevent equivalent deforestation and land degradation.

SDG 13: Climate Action:  contributes to GHG emissions reduction and climate mitigation

SDG 14: Life below Water- eliminates water pollution and its effects on marine life and biodiversity.

Pheebe’s sustainable solution


Towards achieving Sustainable development goals (SDGs)