SWCM(E) Series Marine Sewage Treatment Plant
Application and Principle
This device is applicable to marine sewage treatment plant installed on the following ships operating on or after January 1, 2016, for discharging sewage into the sea, in accordance with all requirements in the 2012 Guidelines, including Section 4.2 – Total Nitrogen and Total Phosphorus Removal Criteria:
(1) For new passenger ships operating in a specific region and intending to discharge sewage into the sea within the special area of MARPOL Annex IV, the device will be installed on or after January 1, 2016.
(2) For existing passenger ships operating in a specific region and intending to discharge sewage into the sea, the device will be installed on or after January 1, 2018, in accordance with Supplemental Provisions IV of MARPOL.
Summary of all rules and discharge standards as follows:
| Index | MEPC.159(55) | MEPC.227(64) | GB3552 – 2018 | USCG | Alaska |
|---|---|---|---|---|---|
| TSS (mg/L) | 35 | ≤35Q/Qe | ≥20Q/Qe | 150 | 30 |
| BOD5 (mg/L) | 25 | ≤25Q/Qe | ≥20Q/Qe | No requirement (NR) | 30 |
| COD (mg/L) | 125 | ≤125Q/Qe | ≥60Q/Qe | NR | NR |
| Coliform (Per/100ml) | 100 | 100 | 100 | 200 | 20 |
| PH | 6 – 8.5 | 6 – 8.5 | 6 – 8.5 | NR | 6 – 9 |
| Residual chlorine (mg/L) | < 0.5 | < 0.5 | < 0.5 | No requirement | 10 |
| Ammonia nitrogen (mg/L) | NR | – | ≥15 | NR | 10 |
| Total nitrogen (mg/L) | NR | ≤20Q/Qe (or at least 70% reduction rate) | ≥20Q/Qe | NR | – |
| Total phosphorus (mg/L) | NR | ≤1.0Q/Qe (or at least 80% reduction rate) | ≥1.0Q/Qe | NR | – |
The SWCM(E) type marine sewage treatment plant uses physical separation, A – O, micro – electrolysis technology, and MBR (membrane bioreactor) for the efficient and thorough treatment of organic pollutants in sewage, enabling the effluent to meet IMO new effluent standards and other stricter requirements. This device is a patented product with independent innovation and intellectual property rights.
Processing flow chart
Grey water → Grey water tank → Black water tank → Sludge recycle → Electric membrane tank → Electrolysis bath → MBR → Ultraviolet disinfection → Discharge
Specifications and main parameters
| Specification/Type | 20 | 25 | 30 | 40 | 50 | 60 | 80 | 100 | 120 | 150 | 200 | 250 | 300 | 400 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Black water load (L/d) | 1540 | 1890 | 2310 | 3080 | 3780 | 4480 | 6020 | 7700 | 9100 | 11200 | 14700 | 18200 | 23100 | 30800 |
| Grey water load (L/d) | 3520 | 4320 | 5280 | 7040 | 8640 | 10240 | 13760 | 17600 | 20800 | 25600 | 33600 | 41600 | 53000 | 70400 |
| Total nitrogen (kg/d) | 0.242 | 0.278 | 0.383 | 0.484 | 0.704 | 0.946 | 1.21 | 1.43 | 1.76 | 2.31 | 2.86 | 3.63 | 4.84 | |
| Total phosphorus (kg/d) | 0.0308 | 0.0378 | 0.0462 | 0.0616 | 0.0756 | 0.0896 | 0.1204 | 0.154 | 0.182 | 0.224 | 0.294 | 0.364 | 0.462 | |
| Rated capacity (persons) | 20 | 25 | 30 | 40 | 50 | 60 | 80 | 100 | 120 | 150 | 200 | 250 | 300 | 400 |
| Max. capacity (persons) | 22 | 27 | 33 | 44 | 54 | 64 | 86 | 110 | 130 | 160 | 210 | 260 | 330 | 440 |
| Electricity (kW) | 10.44 | 14.44 | 14.44 | 17.4 | 18.2 | 18.2 | 24.1 | 27.1 | 31.3 | 44.9 | 48.6 | 56.8 | 80.6 | |
| Outline dimensions (mm) Length × Width × Height | 3050×1500×1900 | 3350×1600×1900 | 3600×1650×1900 | 3800×1800×1980 | 4100×1800×2000 | 4300×1900×2100 | 4670×2000×2200 | 4900×2000×2200 | 5130×2000×2200 | 6100×2400×2450 | 6800×2400×2450 | 8600×2400×2450 | 10630×2400×2450 | |
| Weight (kg) | 5008 | 6524 | 7900 | 9488 | 11830 | 13978 | 17288 | 21063 | 23719 | 27056 | 34060 | 41577 | 54696 | 19673 |
| Discharge water quality | Total suspended solids ≤20Q/Qe mg/L, five – day biochemical oxygen demand ≤20Q/Qe mg/L, chemical oxygen demand ≤60Q/Qe mg/L, heat – resistant coliform ≤100/100ml, PH = 6 – 8.5, residual chlorine ≤0.5 mg/L, total nitrogen ≤20Q/Qe mg/L (at least 70% reduction rate), ammonia nitrogen ≤15 mg/L, total phosphorus ≤1.0Q/Qe mg/L (at least 80% reduction rate), no oil sheen, and ammonia nitrogen ≤15 mg/L. | |||||||||||||
| Temperature | 5 – 50℃, humidity ≤95% | |||||||||||||
| Discharge pressure | 0.2MPa (Note: The discharge pressure can be selected according to different user demands) |
Attention please: The description might be incorrect, please contact us for confirmation.
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