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Weifang Organic Fertilizer Fermentation Workshop – Odor Control (LTP)

Weifang Organic Fertilizer Fermentation Workshop – Odor Control (LTP) process flow

Project Overview

Small organic fertilizer plant: livestock manure fermentation workshop and curing silo. Design air volume: 8,500 m3/h.

Odor Components

Ammonia, methyl mercaptan and volatile fatty acids

Operating Challenges

Turning operations generate odor intermittently with large concentration swings; exhaust contains dust; budget insufficient for a large biofilter.

Treatment Process

Building negative-pressure collection → water spray dedusting and dehumidifying → low-temperature plasma pretreatment → activated carbon polishing

Main Equipment

Corrosion-resistant fan, pre-scrubber tower, low-temperature plasma unit, activated carbon adsorber

Treatment Results

Fermentation sour odor effectively controlled; odor complaints from nearby residents avoided.

Operating Cost

0.49–0.58 CNY / 1,000 m3 of exhaust gas

Technical Highlights

Plasma cracks large-molecule odor compounds first, reducing downstream adsorption load and extending carbon change-out intervals.

This project uses a Low-Temperature Plasma combined process. Learn more about the technology on our Low-Temperature Plasma equipment page. For a similar design, contact us at s18301170098@gmail.com / WhatsApp +86 19833770783.

Engineering Approach

Odor-control retrofits begin with capture: hoods and duct routing are arranged so the fan sees the lowest practical excess air, then the treatment stage – low-temperature plasma or microwave-UV – is sized against the measured or estimated pollutant spectrum and the intermittent profile of generation.

System Composition

A standard package comprises pretreatment (demisting/filtration where humidity or droplets are present), the oxidation stage with multiple modular trains, induced-draft fan, stack, and a control cabinet with interlocked start-up so the treatment unit always runs before the extraction fan ramps.

After-Sales

Modularity keeps maintenance predictable: individual trains isolate electrically for service without stopping the line. Consumables are limited to filters and periodic lamp/electrode inspection – both items stocked for quick dispatch.