Anaerobic Digester

LIQ Fusion 8000 FBE™, the best fusion bond epoxy powder lining system available worldwide.

Tank Connection has developed the ultimate digester designs that provide superior performance in the field with low maintenance requirements.

Special vapor zone design with external rafter system

Special membrane tank cover designs

Integrated Aggregate Storage systems are designed to interface with preferred equipment package.

Looking for more technical information?

ASK THE EXPERT Get The Details


In anaerobic digester applications, Tank Connection’s RTP (rolled, tapered panel) bolted storage tank design coated with LIQ Fusion 8000 FBE™ is unmatched in performance compared to all other bolted tank designs.

At Tank Connection, we are the manufacturer of the #1 bolted liquid storage tank available in the world! We support this claim through customer testimonies and facts, not rhetoric.

You can rely on us to address the factors that should be addressed in digester applications including vapor zone considerations, operating temperature, applicable design configurations, corrosion considerations, pH/acidic levels, operating environment, materials of construction, applicable codes, thermal expansion, chemical resistance and appropriate design standards.


In anaerobic applications, the important area inside the storage tank is the vapor zone area. This is the area where competitor storage products fail. In review, there are numerous digester designs available in the marketplace today. Tank Connection has developed the ultimate digester designs that provide superior performance in the field with low maintenance requirements. When you compare the facts on digesters, separating fact from fiction, your arrival destination will be Tank Connection. Consider the following:

Anaerobic Digester Options

Option 1

Type: Black Steel

Liquid Zone: Yes

Vapor Zone: Liquid Fusion

Installed Cost: Lowest cost digester option

Tank Connection Comments: Black steel is optional for liquid zone that maintains no oxygen. Without oxygen present, there is no corrosive activity.

Option 2

Type: LIQ Fusion 8000 FBE™

Liquid Zone: Yes

Vapor Zone: Yes

Installed Cost: Most cost efficient

Tank Connection Comments: Tank Connection recommended for a complete lined tank application.

Option 3

Type: 304 Stainless Hybrid

Liquid Zone: LIQ Fusion*

Vapor Zone: Yes

Installed Cost: Cost efficient

Tank Connection Comments: Tank Connection recommended due to the current low cost of stainless steel. Ultimate anaerobic digester design.

Option 4

Type: Glass Coated

Liquid Zone: Yes

Vapor Zone: Yes

Installed Cost: Most expensive approach

Tank Connection Comments: Sidewall panels provide good protection. Vapor zone deck design is the weak link in anaerobic digester applications.


* LIQ Fusion 8000 FBE™ (Tank Connection exclusive and proprietary fusion bond coating system)

There is a reason why Tank Connection is building the best digester designs in the industry and it all starts with understanding the requirements of each application:

  • Sidewall to deck connection is welded…not bolted. A bolted connection in the sidewall to deck connection area (vapor zone) is an inferior design compared to a smooth welded transition that is coated with a “holiday free” fusion bond coating system.
  • No internal deck supports are allowed…special pressure deck design developed — Tank Connection utilizes external supports only.
  • LIQ Fusion 8000 FBE™, the best fusion bond epoxy powder lining system available worldwide.
  • For select applications, Tank Connection can provide stainless steel construction in the vapor zone area.
  • Cost evaluation:
  • LIQ Fusion 8000 FBE™ is the most cost efficient approach for anaerobic digester applications.
  • Based on the current and continued low pricing of stainless steel material, a hybrid digester design that utilizes LIQ Fusion 8000 FBE™ 
  • in the liquid zone and stainless construction in the vapor zone, may be considered the ultimate digester design available.
  • Our proprietary LIQ Fusion 8000 FBE™ is NSF 61Certified and is unmatched in performance compared to all bolted tank linings.
  • We can install anaerobic digesters in less than half the time required for field-weld and concrete construction

Typical anaerobic digester tank sizes:

  • Bolted RTP Designs: Up to 2 million gallons (7,570 cubic meters) with external rafter, pressure deck designs.
  • Field-weld Designs: Up to 10 million gallons (37,850 cubic meters) with special deck designs.
Liquid Containment Solutions

Liquid Containment Solutions

01/22/2018 · 9:38am

Tank Connection leads the industry in liquid contain solutions, with superior coating technology, versatile design, expert engineering, and industry experience.

Fusion Bond Epoxy

Fusion Bond Epoxy

03/29/2016 · 8:05am

When specifying liquid tanks for municipal, industrial, and agricultural projects, it is important to not only understand the design specifics, but also the coating requirements.

Industrial Liquid Storage

Industrial Liquid Storage

03/04/2016 · 10:45am

Tank Connection is the only supplier worldwide that designs, manufactures and installs bolted RTP, field-weld, shop-weld and hybrid tank designs for industrial liquid storage. Our proprietary designs are unmatched in performance and strength.

Ultimate Liquid Coating System

Ultimate Liquid Coating System

03/02/2016 · 10:30am

Tank Connection teamed up with Akzo Nobel, the world's largest powder coat supplier, to offer the best fusion powder coating system for liquid storage. Our exclusive LIQ Fusion 7000 FBE™ meets or exceeds today's storage requirements ensuring long life and superior performance.

Anaerobic Digester

Anaerobic Digester

02/08/2016 · 10:25am

This is the first tank that Tank Connection utilized this style of rafter ring. The rafter ring was designed to set within 1 inch of the grating level per customer request. In addition, the nozzles were designed to protrude through the platforms to give the customer access to bolt the piping to the flanges. This was a special request by our customer, and they were very happy with the result.