The Next Generation of
Waste Treatment & Biogas Production
Sustainable Green Technologies (SGTech) is an Israeli CleanTech & Renewable Energy company specializing in Nutrient Recovery, integrated Biogas solutions, and Water Recycling. SGTech focuses on the Livestock industry.
SGTech has developed an innovative Anaerobic Digestion (AD) technology for the treatment of livestock waste – the Integrated Ecosystem Solution (IES) – which produces enhanced biogas and simultaneously removes nutrients from the waste stream. The treated water can be reused or discharged to the sewage system, removing the need for digestate lagoons and/or storage tanks.
SGTech’s IES process is covered by multiple International PCT applications and further by national patent applications in Israel, US, EU, Asia and other regions.
SGTech is a developer of novel waste treatment and anaerobic digestion technologies and employs a royalty licensing model. SGTech licenses its technology to biogas developers in return for lifetime royalties on the project revenues. This approach keeps SGTech invested in the performance of every project for its entirety.
This business model mutually benefits SGTech as well as biogas developers:
- Since the revenues of SGTech are derived directly from the project’s revenue, SGTech has a mutual interest in the success of the project.
- SGTech reduces operational risk by relying on the developers to carry out the Engineering, Procurement, and Construction.
- The business model creates the opportunity for exponential year-to-year revenue increases for SGTech with increased market adoption through multiple international partnerships.
We believe that this business model will allow SGTech to capture significant market share of the livestock biogas market due to reduced costs and increased demand. Projected growth is comparable to that of other renewable energy industries.
Sustainable Green Technologies (SGTech) is an Israeli CleanTech and Renewable Energy company specializing in Nutrient Recovery, integrated Biogas solutions, and Water Recycling. SGTech provides design, construction, operation, and maintenance for wastewater treatment and biogas production facilities for the livestock industry.
SGTech was established to provide technological advancements in the Anaerobic Digestion (AD) industry. This was centered on providing an environmentally & economically sustainable solution for the main drawback of current AD technologies used in the livestock industry: the formation of nutrient-rich liquid digestate. Liquid digestate is black water with high concentrations of pollutants containing pathogens and high nutrient loads, posing a large environmental threat to local soil and watershed quality. The high costs and pollution concerns associated with liquid digestate make conventional AD technologies largely unsustainable in the livestock industry.
SGTech’s philosophy is that environmental and economic interests need not be contradictory. Moreover, only when these interests meet can we achieve healthy, sustainable farming. Therefore, SGTech’s technology is aimed at benefiting all involved parties while protecting soil and water qualities and mitigating greenhouse gas emissions.
SGTech has developed a win-win-win solution for farmers, biogas developers, and project investors. Our Integrated Ecosystem Solution (IES) is an accelerated biological treatment process designed to protect the entire farm ecosystem – air, soil & water. As compared to current best available AD technologies, IES leads to increased economic returns due to lower CapEx and OpEx while providing a safer and more complete method of organic waste treatment.
SGTech is the sole owner of the technology with a number of International PCT applications and national patent applications in Israel, the US, the EU, China, Russia, India and additional regions.
Integrated Ecosystem Solution (IES)
SGTech’s innovative solution for Nutrient Recovery and Biogas production - the Integrated Ecosystem Solution (IES) – aims to redefine the standard in Anaerobic Digestion (AD) processes known today. The technology addresses the full picture of waste treatment while avoiding the need for post-processing treatment of digestate. Our alogrithmic approach to organic waste digestion enables Nutrient Recovery throughout the process, yielding biogas with increased methane concentrations, safe solid fertilizer, and clean water.
IES is an accelerated biological process designed to protect the entire ecosystem:
- Air - No pollution from CH4, H2S, NH3 and N2O. This is a market driver as today's regulatory landscape demands greengouse gas mitigation and sustainable renewable energy sources.
- Water - No pollution to watershed or ground water from runoff of NO3, TP, Na+, or Cl-. Our system effluent meets strict regulatory parameters for COD and BOD content, making IES a preferable choice over traditional methods.
- Soil - No pollution to the soil due to salinity from Na+, Cl-, B- and a reduced pathogen threat to crops. IES provides farmers with a better alternative to conventional ammonia based liquid fertilizers.
Unlike the current best available anaerobic digestion technologies, SGTech's solution does not require additional chemicals, is more cost effective, and is safer for the environment. We believe that IES will allow dairy farmers to enhance dairy production while reducing their environmental footprint.
Currently, SGTech has the following:
- Functioning pilot facility treating ~15 m3/d (~4,000 gal/d), pictured at left. The facility does not yet run at full capacity for ease of experimentation and R&D. Full operation is expected in February 2019, when the facility will treat waste from ~400 cows, approximately 60 m3/d (~ 16,000 gal/ day)
- Preliminary agreements for 5 full-scale projects at dairy farms in Israel, each designed to treat waste from ~1000 cows, approximately 150 m3/d (~40,000 gal/d)
- International projects in development with leading global biogas companies. Early entry markets include Germany, the UK, and the US
SGTech has an in-house lab for developing new technologies and for analytical measurements. We are currently expanding our lab to allow for increased R&D on further applications of our core technology.
SGTech has been operating a fully functional pilot facility (~15 m3/d (~4000 gal/d) influent flow) since November, 2017, on a dairy farm in Israel.
Partnerships and Commercialization
SGTech has secured strong international partners and is in discussions to realize full scale biogas facilities implementing SGTech solutions on dairy farms across the globe. SGTech is currently designing and negotiating multiple full-scale (~1000 cows) projects on dairy farms in Israel, with additional discussions underway with partners in Germany, the UK, and the US. Construction is expected to commence in the first half of 2019, with increased project flow moving forward.
Intellectual Property (IP)
SGTech is the sole owner of the technologies mentioned with a number of International PCT applications and national patent applications in Israel, the US, the EU, China, Russia, India, and additional regions.
SGTech is applying for several more patents in 2018.
CASE STUDY #1
Milking Parlor (Milking Shed) ~2 m3/d Nutrient Recovery Prototype
After years of developing its biological nutrient recovery technology in a lab setting, SGTech developed a prototype (pictured at right) on an Israeli dairy farm for proof of concept. SGTech successfully tested its technology at this facility by treating ~2 m3/d (~530 gal/d) of influent waste containing 1-2% dry matter. Table 1 & Figure 1 summarize the system performance. Figure 2 illustrates the treated water qualities.
§ Mixing of milking parlor slurry (~1%DS) and holding area manure (~15%DS)
FIGURE 2: Treated water qualities
FIGURE 1: System performance
§According to the Israeli regulations
TABLE 1: System performance
CASE STUDY #2
Milking Parlor & Cowshed 30 m3/d Waste Treatment Pilot Plant
After a successful nutrient recovery prototype demonstrating proof of concept (CASE STUDY #1), SGTech developed a functioning pilot plant (pictured at right) to validate its IES technology at near market scale. SGTech's pilot facility's design capacity is to treat the entire waste (raw manure + milking parlor slurry) of a small scale dairy farm in Israel (~300 cows). The purpose of this case study (CASE STUDY #2) was dual: 1) prove the technology robustness in a “real” waste treatment setting, including both the nutrient recovery and biogas production aspects, and 2) Verify the economical profitability of the technology.
This case study extended our technological analysis of the IES process in terms of nutrient recovery, Biogas/Energy production, and compost quality. Results of initial tets are shown below. Additional tests are now being performed to test system performance with the addition of various codigestion substrates such as whey and chicken dung.
TABLE 1: System Performance
§ The plant is currently being used for further R&D.
Expecting full operation by February 2019
Sewage discharge levels§
1,500 +/- 125
480 +/- 210
100 +/- 10
25 +/- 2
12 +/- 3
7.4 +/- 0.76
400 Dairy Cows
~2 m3/d (~530 gal/d)
1-2 % §
2,000 +/- 400
700 +/- 30
150 +/- 50
55 +/- 13
10 +/- 5
~7.3 +/- 0.4
1st stage no additives: 40 kW
2nd stage with additives:100 kW
30 m3/d (~8000 gal/d).
Nov 2017 §
400 m2 (~4300 ft2)