Hoggery Wastewater Treatment Solution: Selecting The Right System

Select a hoggery wastewater solution by mapping four inputs to a train - your daily volume and concentration, the solids load, your discharge or reuse target, and your site footprint. A CSTR or USR fits raw, high-solids manure; a UASB or IC fits clarified liquid after separation; and the aerobic polish (AOAO) plus sludge and disinfection complete the scope. Capacity is the first number: pig farm references in the library run from 300 to 900 m3/day, and larger farms scale up.

Start From Volume And Concentration

Capacity sizing begins with tonnage and COD, not with a reactor brand. A continuous flush system and a batch haul differ because one feeds steadily and the other arrives in spikes, which changes equalization and reactor volume. The concentration then sets the organic loading rate and, with the hydraulic retention time, the digester volume - the two largest engineering variables.

Reactor Choice For Pig Manure

If the manure is raw and solids-heavy, a CSTR or USR is the resilient choice because it tolerates the load that would blind a UASB's granular bed; if you separate solids first, a UASB or IC recovers more COD per cubic metre. The decision is not 'which is best' - it is which matches your feed. Over-loading a UASB with solids is a common, avoidable failure.

What An EPC Scope Should Include

A complete hoggery solution covers pre-treatment (screening, equalization, optional solid-liquid separation), the anaerobic reactor, the aerobic polish, sludge handling, the biogas path (collection, desulfurization, holder), controls, and commissioning. Single-responsibility EPC matters here because the anaerobic and aerobic stages must be balanced - an over-sized digester starves the polisher, and an under-sized one overflows. Confirm the guarantee is on treated-effluent quality, not just equipment supply.

Project Reference - Wen's Breeding Plant

A breeding-plant wastewater project in Guangxi applied a pre-process + USR + AOO + advanced treatment train at a capacity of 900 m3/day (figures from the 2025 EPC Project Catalog). Published data shows location, process, and capacity only; no water-quality or tank-dimension figures were released, so this is cited as a scoped application rather than a performance claim.

About Company

Shijiazhuang Zhengzhong Technology Co., Ltd (Center Enamel) is a comprehensive high-tech enterprise specializing in wastewater engineering, process section contracting, and equipment manufacturing. The company delivers biogas and wastewater projects through three main lines - EPC (turnkey) contracting, equipment supply, and process packages - covering livestock and municipal wastewater, biomass energy, industrial wastewater, and food waste. Its reactor portfolio spans CSTR, USR, UBF, UASB, IC, and EGSB, backed by in-house Glass-Fused-to-Steel tank manufacturing (enamel firing at 820-930 C) and certifications including ISO 9001, NSF/ANSI 61, and CE-EN 1090. With 35+ years of operation, a 150,000 m2 manufacturing base, and projects in 100+ countries, Center Enamel provides the single-responsibility engineering behind livestock wastewater projects including the 900 m3/day breeding-plant train in Guangxi referenced above - a scoped application, not a generic package.

Conclusion

A hoggery wastewater solution is selected from volume, concentration, solids, and target, with reactor type and vendor scope matched to the feed - capacity and the effluent guarantee, not the brand, are what protect the result.

Frequently Asked Questions

Q1: How do I size a pig wastewater treatment system? A1: From daily volume and COD: capacity x influent concentration sets reactor volume via the organic loading rate.

Q2: CSTR or UASB for a pig farm? A2: CSTR/USR if raw manure is high in solids; UASB/IC only after solid-liquid separation.

Q3: What capacity range do pig plants come in? A3: Library references span 300, 580 and 900 m3/day; larger farms scale up.

Q4: What should an EPC scope include? A4: Pre-treatment, anaerobic reactor, aerobic polish, sludge, biogas path, controls and commissioning.

Q5: How much footprint does a pig plant need? A5: Driven by HRT x volume; tank-based GFS systems use less land than a covered lagoon.

Q6: What does a pig solution cost? A6: CAPEX scales with capacity and reactor type; request a site-specific quote rather than a per-m3 figure.

Q7: How to reduce ammonia inhibition? A7: Co-digestion, controlled loading and occasional alkalinity dosing; monitor VFA/ALK ratio.

Q8: Should I separate solids first? A8: Yes for UASB/IC; CSTR/USR tolerate high solids without pre-separation.

Suggested CTA

Share your pig farm's volume, concentration, and discharge limit, or request a scoped treatment-solution outline and vendor shortlist.