Farms with Biogas plants

Anaerobic Digestion & Renewable Energy

Galli Engineering is a leader in Dry Digestion technology to treat organic wastes with varying composition such as the organic fraction of municipal solids waste. In addition, further attention on the relation between feedstock composition, organic loading rate, and mixing regimes is required for continuous dry anaerobic digestion systems. Dry Digestion technology is attractive for treatment of the organic fraction of municipal solid waste (OFMSW) and agricultural wastes (AW). Anaerobic Digestion (AD) is a series of biological processes in which micro organisms break down biodegradable waste in the absence of oxygen to produce renewable energy. Large amounts of waste, including livestock manure, municipal wastewater solids, food waste, industrial wastewater and residuals, fats, oils, grease, and various other organic waste streams avoid getting dumped into landfills. Once processed, this waste is converted into biogas which can be used as a fuel to generate electricity, or further processed into renewable natural gas and transportation fuel.

Anaerobic treatment facility

Anaerobic treatment is typically utilized to treat warm, high-strength industrial wastewater containing high concentrations of biodegradable organic matter. This energy-efficient process reliably removes biochemical oxygen demand (BOD), chemical oxygen demand (COD), and total suspended solids (TSS) from wastewater.

Anaerobic processes use substantially less energy, require less chemicals, and incur lower sludge handling costs compared to aerobic treatment options. In addition, the biogas produced in the anaerobic process is a source of renewable energy that can be used to displace fossil fuels such as oil or natural gas, or to generate electricity.

Sustainable & Renewable Energy Design

Doing so can also improve financial sustainability and competitiveness by increasing efficiency. GE Sustainable Design and Environmental Management staff design and evaluate places, products and services that reduce use of non-renewable resources, minimize impacts and create lasting and vibrant communities.

Energy Efficiency & Energy Systems

Renewable and /or conservation energy solutions may include solar photovoltaics, solar thermal technology, geothermal HVAC supplementation, wind turbine electrical production, rainwater collection and utilization, grey water reclamation, building automation, daylighting and passive solar irradiation capture.

Agricultural & Dairy Waste

  • Organic Food Waste is one of the largest waste streams generated today going to landfills representing one of the biggest challenges facing mankind. According to the EPA, 35 million tons of food waste ends up in landfills, accounting for 20% of all waste in landfills. This occurs due to a chronic market failure.
  • Between 33-50% of all food produced globally is never eaten, and the value of this wasted food is worth over $1 trillion. To put that in perspective, in the USA food waste represents 1.3% of the total GDP. Food waste is a massive market inefficiency, the kind of which does not persist in other industries.
  • Food Waste that ends up in landfills will decompose and produce methane gas, a more powerful greenhouse gas than CO2, contributing to global temperature rises, and regional and global climate changes.
  • Food waste is a major culprit in destroying our planet, and in fact if food waste were a country, it would be the third largest emitter of greenhouse gases after China and the USA.

Types of Anaerobic Digestive Systems

  • Anaerobic Membrane Bioreactor
  • Plug Flow Reactor
  • Fixed Film Reactors
  • Continuously Stirred Tank Reactor (CSTR)
  • Packed Tower & Upflow Sludge Blanket Reactor
  • Anaerobic Treatment Process using Dissolved Gas Flotation (DGF) process
  • External Circulation Sludge Bed (ECSB)
  • Anaerobic Treatment Process using Dissolved Gas Flotation [DGF] process
  • Anerobic Lagoons
  • Dry Digestion Systems