

Anaerobic Digester Tanks
An anaerobic digester is a closed tank in which bacteria break down organic matter without oxygen and release biogas. Digesters are used in biomass, food-waste, leachate and distillery wastewater treatment.
We fabricate and erect steel digesters on site, with coating and insulation. References include anaerobic digestion tanks for a biomass treatment plant in Guangzhou, anaerobic tanks for distillery wastewater plants in Guizhou and Sichuan, and installation of cone-hopper sludge discharge units at a waste treatment park in Taishan.
For an environmental EPC contractor we have built leachate and wastewater tanks on eight projects, including tanks at waste-to-energy plants.
| Type | Field-erected vertical steel tanks |
|---|---|
| Materials | Carbon steel with coating; stainless steel to your data sheet |
| Scope | Fabrication, site erection, anticorrosion coating and insulation; foundations on some projects |
| Accessories | Cone-hopper sludge discharge, nozzles and manways to your process design |
| Protection | Sa 2.5 blasting, epoxy zinc-rich primer + polyurethane topcoat, or your coating system |
| Inspection | Weld NDT and tightness testing as specified |
Sizes and ratings are confirmed against your data sheet.
- Biomass and organic waste treatment
- Food-waste treatment: outlet tanks and aerobic tanks in Wuhan
- Landfill and waste-to-energy leachate treatment
- Distillery wastewater treatment
- Plate verified against mill test reports, then CNC cut, bevelled and rolled in Jinxian.
- Prefabricated parts shipped to site and erected.
- Site welding to qualified WPS/PQR.
- Weld NDT by RT, UT, MT or PT as specified.
- Tightness and water fill testing as specified.
- Sa 2.5 blasting, coating and insulation.
- Documents supplied: certificate of conformity, quality certificate, as-built drawings, MTRs, WPS/PQR welding records, NDT reports, pressure or tightness test report, heat-treatment chart (if applicable) and packing list.
Can you supply the digester tank together with the foundation?
On some projects our scope has included the foundation as well as fabrication and erection. The split of scope is confirmed for each project.
Do you work as a subcontractor to environmental EPC contractors?
Yes. We have built leachate and wastewater tanks on eight projects for one environmental EPC contractor, including fabrication, coating and insulation.
What corrosion protection is used?
The coating system follows your specification. Our standard system for steel is Sa 2.5 blasting with epoxy zinc-rich primer and polyurethane topcoat, with insulation outside where required.
What do you need to quote a digester?
Working volume, diameter and height, medium and temperature, operating pressure, internal equipment and nozzles, insulation and coating requirements, site location and required completion date.
Related products.
Quote this product.
Send the medium, design pressure, temperature and quantity. An engineer replies with questions or a quotation.
- Sales contact
- Mr. Yu Jiakang
- WhatsApp / WeChat
- +86 183 1791 9067
- Factory
- No. 2666 Jinxian Avenue, High-tech Industrial Park, Jinxian Economic Development Zone, Nanchang, Jiangxi, China 331700

Pressure vessels, storage tanks, SF double-wall tanks, steel structures and skid-mounted units, fabricated in Jinxian, Jiangxi since 2003.
Jiangxi Wanlong Industrial Co., Ltd.
No. 2666 Jinxian Avenue, High-tech Industrial Park, Jinxian Economic Development Zone, Nanchang, Jiangxi, China 331700
Contact
- Mr. Yu Jiakang
- WhatsApp +86 183 1791 9067
- jiakang@wanlongindustrial.com
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