BENCHMARK STUDY
SEWAGE APPLICATIONS

TECHNOLOGY IMPROVEMENTS AT A GLANCE

0 x
HIGHER FLUX RATE
0 %
LOWER POWER CONSUMPTION
0 x
LESS CLEANING
0 x
SMALLER FOOTPRINT

The replaced ceramic flat sheet membrane system is designed as single plate module with stainless steel frame which is the most common design used in sewage treatment applications (developed in 2006). 

12 years later, the operator of the MBR plant decided to use the latest design generation of CERAFILTEC. The old system was still functional, a proof of the robustness of the ceramic technology. However, the focus of the replacement was to reduce the operational expenses of the plant. 

PROCESS FLOW DIAGRAM

Ceramic flat sheet membrane - CERAFILTEC PFD 2

BLOWER FOR AIR-SCOURING

BLOWER FOR BIOLOGY

BUFFER TANK

ANOXIC TANK WITH INTERNAL CIRCULATION

RECIRCULATION FLOW

RAW WATER FROM HOTEL & RESTAURANT

DRAINAGE WATER BACK TO PLANT

SCREEN 3 mm

REED BED FOR EXCESS SLUDGE DECOMPOSITION

CERAFILTEC INSIDE MBR AEROBIC TANK WITH 1 TOWER

FILTRATION PUMP

BACKWASH PUMP

FILTERED WATER TANK

RE-USE TOILET FLUSHING

EXCESS SLUDGE DISCHARGE

PERFORMANCE DATA

PARAMETERUNITINLETFILTERED WATER
CODmg/L1,000 - 1,10027
BOD 5mg/L540 - 550< 1
NH4-Nmg/L34 - 35< 0.03
NO3-Nmg/L< 0.23< 0.023
NO2-Nmg/L0.028 - 0.070.008
TOTAL N (inorg)mg/L34 - 350.009
TOTAL Pmg/L19.9 - 26.71.08
MLSS/TSSmg/L13,000< 1.0 (nil)
PARAMETERUNITOLD SYSTEMCERAFILTEC test 1CERAFILTEC test 2
Module designSingle plate
Steel frame
Single plate
Module 6.0 S
Single plate for
Module 6.0 S
Membrane typeAlumina 0.2 µmSiC 0.1 µmAlumina 0.1 µm
Filtration/Backwashmin/sec10/4030/4015/30
Air-scouringNm³/hr60 - 8040 - 5040 - 50
Flux rateLMH15 - 3150 - 8050 - 60
TMP (avg)bar-0.40-0.25-0.20
CIPOnce a monthAfter 5.2 monthsN/A
CODInlet 1,000 - 1,100 mg/L
Filtered water 27 mg/L
BOD 5Inlet 540 - 550 mg/L
Filtered water < 1 mg/L
NH4-NInlet 34 - 35 mg/L
Filtered water < 0.03 mg/L
NO3-NInlet < 0.23 mg/L
Filtered water < 0.023 mg/L
NO2-NInlet 0.028 - 0.07 mg/L
Filtered water 0.008 mg/L
Total N (inorg)Inlet 34 - 35 mg/L
Filtered water 0.009 mg/L
Total PInlet 19.9 - 26.7 mg/L
Filtered water 1.08 mg/L
MLSS/TSSInlet 13,000 mg/L
Filtered water < 1.0 mg/L (nil)
Module designOld system: Single plate + Steel frame
CERAFILTEC test 1: Single plate + Module 6.0 S
CERAFILTEC test 2: Single plate for Module 6.0 S
Membrane typeOld system: Alumina 0.2 µm
CERAFILTEC test 1: SiC 0.1 µm
CERAFILTEC test 2: Alumina 0.1 µm
Filtration/BackwashOld system: 10 min/40 sec
CERAFILTEC test 1: 30 min/40 sec
CERAFILTEC test 2: 15 min/30 sec
Air-scouringOld system: 60 - 80 Nm³/hr
CERAFILTEC test 1: 40 - 50 Nm³/hr
CERAFILTEC test 2: 40 - 50 Nm³/hr
Flux rateOld system: 15 - 31 LMH
CERAFILTEC test 1: 50 - 80 LMH
CERAFILTEC test 2: 50 - 60 LMH
TMP (avg)Old system: -0.40 bar
CERAFILTEC test 1: -0.25 bar
CERAFILTEC test 2: -0.20 bar
CIPOld system: Once a month
CERAFILTEC test 1: After 5.2 months
CERAFILTEC test 2: N/A

TECHNOLOGY PROSPECTS

CERAFILTEC is currently testing several ceramic flat sheet membrane materials from different producers. Two selected Alumina membrane suppliers are already installed at the benchmark test site and are indicating a significant performance increase using CERAFILTEC’s new module concept.

AT CURRENT BENCHMARK STAGE

an up to 

0 x
HIGHER FLUX PERFORMANCE

is expected by using single Alumina ceramic flat sheet membrane plates with CERAFILTEC’s high flux module housing design in sewage treatment applications.

PLANT PICTURES

Ceramic flat sheet membrane - CERAFILTEC - St. Wendel MBR plant bldg
Plant building
Ceramic flat sheet membrane - CERAFILTEC - St. Wendel MBR plant reed bed
Reed bed for excess sludge
Ceramic flat sheet membrane - CERAFILTEC - SiC Cembrane test St. Wendel
MBR tank
Ceramic flat sheet membrane - CERAFILTEC - Benchmark Sewage
MBR tank
Ceramic flat sheet membrane - CERAFILTEC - St. Wendel MBR plant inside
MBR tank
Ceramic flat sheet membrane - CERAFILTEC - Suitcase test units St. Wendel
Two suitcase test units for parallel tests
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