A、Introduction to innovative ultrafiltration membrane materials

Advantages

Application Fields

Application Industry

● Ability to filter bacteria and viruses

● The module can be cleaned without replacing the filter consumables

● Zero consumables maintenance cost

● Suitable for seawater, freshwater and indoor aquaculture

● Ability to process various water quantities, qualities, and flow rates

● Actual design may be customized as per each site’s needs

● Drinking water sales chain

● Process wastewater treatment

● Fish farming

● Animal Husbandry

● Agriculture

B、Features of innovative ultrafiltration membrane materials

Material

High resistance and

high flux rate

Membrane characteristics

● Hydrophilic PVDF

● Non-stick

● Easy to clean

● Chemical resistance

● Ultrafiltration membrane pore size (MWCO (MW=85K)>80%)

● Microfiltration membrane flux (>300LMH)

● Low resistance

● Zero energy consumption

● High flux rate

● Small amount of backwash water requied

● No need for glue or other multi-layer material bonding technology

● Water production scale can be designed according to actual application

● Washable, no need to replace filter consumables

C、Comparison with US Competition

Serial number	Mean Pore (um)	Max Pore (um)	Flux *(L/m2h)**	MWCO (%)	Thickness uniformity (%)	Flux/water production rate (LMH)
ERFM-1	0.1729	1.063	304.48	83.0	92	>300
ERFM-2	0.1154	0.693	341.11	87.6	92	>300
Competitive American Products	0.1542	0.977	190.66	85.0	85	190

D、Filtering test data

1.Virus filtration: Ultrafiltration membrane filtration of MS2 bacteriophage (pure virus), 24nm filtration effect is about 49.72~79.74%.

2、Bacteria Filtration：

Before filtration

After

filtration

Filtration rate

Groundwater E. coli (CFU/100ml)

19000

33

99.8%

3.Stream water filtration：

Mayuantou Creek water sample

Before filtration

After filtration

(qualified)

Biological aspects of drinking water quality

Escherichia coli

(CFU/100ml)

68,000

<1

< 6

Total colony count

(CFU/ml)

3,400

<5

<100

E、Examples of technical services that can be provided

※Module technical service

※Application Field Cooperation Project

Schematic diagram of the system flow for breeding

Flow diagram of food/groundwater system

※Schematic diagram of the breeding farm filtration system

The filtration accuracy is generally greater than 10um or 0.5um, and cannot filter bacteria below 0.1um.

※Field testing and verification：

Fishpond field verification settings

Visual inspection and turbidity detection of landscape fish pond water samples
Sample code
Turbidity value (NTU)
average value
Original liquid-20201120
143.00
75.50
52.80
90.43
Rough filtration-20201120
0.29
0.31
0.32
0.31
Ultrafiltration-20201120
0.07
0.06
0.07
0.07

Water sampling

※Landscape fish pond and filter cleaning status

Improved algae removal

Before filtration

After filtration, the water quality improves visually and fish can be seen

Filter elemnent cleaning status and records

Before and after filter elemnent cleaning

The filter element does not need to be replaced and can be reused

Water production: Ultrafiltration water production 31 tons/day (22.7L/min)
Cleaning frequency: Currently once every three days

(Higher frequency in the beginning when the pool is dirty, then the cleaning frequency can be reduced for long-term filtration)

Cleaning method: (1) Rinse directly with clean water

(2) Remove biofilm by soaking in bleach

※Drainage Water Filtration and Recovery Project

※Taiwan X Hualien Plant Deep Ocean Water Filtration Test

Using ultrafiltration modules for deep water clay filtration, the turbidity is reduced from about 20,000 NTU to 0.04 NTU, which is quite effective and the requirements of tap water design standard of less than 4 NTU and drinking water turbidity standard of less than 2 NTU can be met.

※Xiangshan Seawater Filtration of the Academy of the Agricultural Technology Research Institute

※Hualien Deep Water Ultrafiltration Cooperation Project of the Agricultural Technology Research Institute

※Tainan Breeding Center (OO Technology)

F、Schematic diagram for actual marine aquaculture application

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