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Jowa

BIO STP

Jowa BIO STP — Marine Sewage Treatment Plant (Multi-type, automated).

Components & Design

Component data being added…

Technical Data

IMO Standard IMO MEPC.2(VI)
Operation Mode Fully automatic, unattended operation
Sewage Types Black water, grey water, galley water, combined sewage
Feed System Gravity or integrated vacuum unit
Biological Treatment Fixed-film bioreactor with stable biomass
Odor Control No offensive odors produced
Certification MARPOL 73/78 Annex IV compliant
Vessel Types Suitable for all types of ships

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Common failures & inspection points

Aeration System Functionality - Verify that the air blower operates normally, produces adequate air flow (measured in m³/h), and shows no unusual vibrations or

Operational test of blower unit; visual inspection of diffuser elements; measurement of air delivery pressure and flow rate; check for unusual noise or vibration

Chlorine Disinfection and De-chlorination Chemical System - Verify chlorine dosing pump operational status and output rate (target 5%), monitor de-chlorination

Test chlorine dosing pump capacity and pressure; verify de-chlorination system activation; sampling of effluent for residual chlorine content; inspection of chemical storage and delivery lines

Biofilm Reactor Integrity and Biological Process - Verify that the fixed-film structured matrix is intact, not collapsed or excessively fouled. Monitor tank for

Visual internal inspection of reactor matrix and tank walls; odor assessment; sludge level measurement; microbial activity verification; sediment sampling for COD/BOD parameters

Vacuum/Gravity Feed System and Sewage Inlet Lines - Ensure vacuum unit (if installed) operates at correct pressure range, check all sewage inlet lines for leaks

Pressure gauge reading for vacuum system; visual inspection of all feed lines and connections; pressure/flow testing; valve function verification; check for odor leaks indicating line failures

System Capacity and Load Compliance - Verify that actual crew/passenger count and wastewater generation rates do not exceed the rated P.E. capacity of the insta

Review vessel crew manifest and capacity records; sampling of influent sewage flow rate and BOD5 concentration; comparison with unit design specifications (1.05-4.20 m³/day for STP 2010; 15-100 P.E. for STP 2016)

Type-general inspection and maintenance points for this equipment category — not model-specific.

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Equipment Model #147588 · ✓ still in production