Rainwater filtering system

Rainwater treatment equipment installed KSF type filtration system is eco-friendly rainwater filtering system.
We developed the best selling model KSF type filtration equipment as main machine, and filtration pump, chlorine pump, and control panel can be unitized.

<< Features >>

• Can accommodate each type of rainwater utilization system.
• With our accumulated know-how in water treatment field, we trust our filtration must be satisfactory.
• In small rainwater utilization facilities, it will be more economical by changing KSF type filtering system to KCF type (cartridge filtration) because of no requiring reverse cleaning.

Waterscape filtering system

Waterscape filtering system is composed by KSF type rainwater filtering system and hair catcher which catches suspended matters in basin facilities.
As well as rainwater filtering system, it can be unitized.

<< Features >>

• Can accommodate each type of waterscape filtering system.
• We trust our filtration must be satisfactory for our accumulated know-how in water treatment field.
• It will be more economical in small waterscape filtering facilities by changing KSF type filtering equipment to KCF type (cartridge filtration) because of no requiring reverse cleaning.

Gravity filtering system

When contamination of filtering media gets to a certain level, filtering operation is automatically switching to reverse cleaning with any manual valve operation by worker.
And at the same time with finishing reverse cleaning, automatically switching back to filtering operation.
The reverse cleaning operation system applies hydrology and its function is stable and this is one of a kind.

<< Features >>

1. Automatic operation

No need workers for filtering and reverse cleaning operation due to fully automatic operation.

2. Stable filtering and reverse cleaning operation

Since filtering operation is automatically switching to reverse cleaning when filtering media get to a certain level of contamination and cleaning the filtering media automatically, it always can get steady filtering water.
Also, since it would never been overused, would be lessen damage of filter layer and be lower consumption of filter sand.

3. No need replacing filtering media

Unnecessary replenishing or replacing of filtering media due to no flow out of filter sand because of stable reverse cleaning.

4. Safe and no breakdown

Since this system is automatic, free from occurring breakdown of filtering layer and depression of filtering ability caused by commonly happened mistake or bungle on operation in valve work by manual operation.

5. Low operation and maintenance cost

Due to most of operation cost is electric power cost, and no requiring pump for reverse cleaning facility, its power consumption is low.
Also since high stability filtering media for rapid filtering system is applied, no requiring replenishment in long period even filtering and reverse cleaning operates frequently.

6. Low facility cost

Due to no requiring pump for reverse cleaning facility or elevated water tank or valves, equipment cost is low.

Iron removal/manganese removal system

Summary

Iron and manganese (Clarke number that shows existence percentage of elements in crust is 4^th and 12^th place) which are comparatively exists in large numbers, and they are one of commonly-contained substance in groundwater.
Also, Iron and manganese have the same transition element and have many similarities and mostly exist together in groundwater.
In case using this high contained iron and manganese groundwater, many adverse effects will occur such as nasty smell or coloring problem in drinking and daily life water use(less than 0.3mg/L for iron, 0.05mg/L for manganese), or cause of defects of products or clog of equipment and pipes by scaling in each industrial water use.

Hence, iron and manganese have been treated since early times, and various treatment methods are developed.
However, its treatment must select a suitable method that comply with existence form of iron and manganese in water and contained amount, it is commonly-seen that stereotypical treatment method cannot work.

Activated carbon filtration system

The form or raw material of activated carbon will be selected depending on its purpose and making use of each characteristics of coal base or water quality base.
Filtering is operated by making full use of adsorption capability of activated carbon.
When the difference pressure in between inlet and outlet comes up to a stated pressure level, the operation will be switched to reverse cleaning so that can use it repeatedly.

<< Features >>

• Removal effect of organic substance in water is good.
• Absorption capability of free chlorine in water is good.
• Remove turbidity in water and make it be clean water.
• Remove miscellaneous tastes and smells, and make it be high quality water.
• Can remove Bacillus E. coli etc. in water by absorption.
• Can remove iron in water by absorption.
• Can remove radioactive ingredient in water by absorption.
• In case the selected activated carbon is fitted for its purpose and be used normally, the activated carbon have good physical strength and very few consumption, and have good absorption capability, too.

<< Applications >>

• Pretreatment of iron exchange resin system
• Food manufacturing water/processing water
• Drinking water
• Filtration of water for decoloring, deodorizing etc.
• Absorption and filtration of BOD, COD as 3^rd drainage treatment

Coagulation-sedimentation filtration system

Colloids or similar size of fine-grains or microbes in water is agglutinated and be bigger floc by using chemicals, and the floc are removed and make clean water through rapid filtration system.

<< Applications >>

• Purification of water
• Pretreatment of drinking water/pure water

Coagulation-sedimentation system

Coagulation-sedimentation system adopts physicochemical removal method to remove suspended solids in water or dissolved metal ion, and this is the most appropriate to treat inorganic wastewater.
By combination with a biological treatment system, can be obtained advanced process water.

<< Example of application >>

• Metal-surface treatment waste water
• Dyeing waste water, oil-containing wastewater
• Painting waste water, plating wastewater

Membrane filtration system (MF/UF/RO membrane)

[ MF membrane(micro filtration membrane) ]

The membrane for filtration to separate corpuscle and microbes of which size around 0.01 - several µm.

<< Applications >>

• Removal of microbes
• Pre-filtration for making pure water/ultra pure water
• Filtration for high molecular protein/enzyme/starch
• Treatment for sewage water/ industrial wastewater

[ UF membrane(ultra filtration membrane) ]

The membrane for filtration to separate solute or particles of which molecular weight around several 100 - a few million.

<< Applications >>

• Removal of bacterium/virus
• Separation of protein/enzyme
• Removal of fine particles in ultra pure water

[ RO membrane(Reverse Osmosis membrane) ]

The membrane used to separate solvent (or water) and the solute.
By applying bigger pressure to the high density solution side, the solvent shifts to the thin side contrary to the osmotic phenomenon.

<< Applications >>

• Seawater desalination
• Making ultra pure water
• Reutilize of sewage water

* The hollow fiber film is a main current, and as the filtration method, one is filtered crossing flow method that it decreases the adhesion to the membrane surface by the flow along the membrane surface, another one is all filtration method.
The pass method has the inner pressure type and the external pressure type.

Water softener system

With Na type cation exchanger resin, substitute hard element such as Ca2+ or Mg2+ etc. in raw water to Na+ in iron exchanger resin, and make it be soft water.
The resin is regenerated by sodium chloride solution (NaCl).

<< Applications >>

• Boiler water
• Dyeing/fiber refining water
• Food manufacturing water
• Laundry water

Pure water system

There are two kinds of iron exchanger resin of which are cation exchanger resin and anion-exchange resin.
Cation exchanger resin have acid type (H type) and mild acidity type (Na type) etc , and Anion exchanger resin have base type (OH type) and weakly basic type(Cl type) etc.
These ion exchanger resins have selectivity of ion to exchange adsorption, and the purified water with high accuracy can be manufactured by selecting using the characteristic.

We, Kisui Water Treatment Japan, Inc. offers a series of automatic pure water producing processes including pre-treatment process, selection of iron exchange resins by application, and efficient automatic regeneration system of iron exchange resin.

Automatic mixed bed tower type pure water system is easy operation management, can provide stable and highly refined pure water as well as being possible to become a help that the operator who has been engaged in the reproduction work up to now can work full-time and decreases the produce cost to the production line, too.

<< Features >>

Downsized facility could save installation space and sequencer mechanism resolved instrumentation system troubles.
Also it is possible to produce highly refined pure water from any raw water.

Although automatic 2-bed 2-tower type pure water system can not produce to the same quality level with pure water from automatic mixed bed tower type, it provides more stable operation management.

<< Features >>

2 ways, counter-current flow regeneration way and co-current flow regeneration way are adopted.
Usage of chemicals (HCL, NaoH) on counter-current flow regeneration way is less than 50% of co-current flow regeneration way's one.
Besides, regeneration time is shortened to 2hours so that can extend time for obtaining pure water longer.

Various type of sterilizer system

We have following types of sterilizer systems. We would select suitable sterilizer system under your usage conditions.
Please feel free to contact us you have anything you wish to discuss.

• Hypochlorite dosing equipment (for sterilization of general filtering water , accelerated oxidation of iron removal filtration etc.)
• Silver ion and copper ion generator (for algicide of waterscape filtration etc.)
• Ultraviolet sterilizer equipment

Ultraviolet sterilizer have been used for improvement of quality of water and established achievements in a wide variety of industries such as ultra pure water for soft drink or brewing water on food industry, cleaning water for container on pharmaceutical plant.

The advantage points compare to ultraviolet sterilization process are relatively easy for applying or less selectivity against bacterial species, and the strongest point is almost nothing occurred of secondary contamination problem (any change in water quality).
This ultraviolet sterilizer system has each type in accordance with its purpose or application including flow-through type, immersion type, and irradiation type and so on.
In addition, we developed the ultraviolet sterilizer that applies optical transmissive fluorine resin, and it works not only for sterilization but also for other purposes of water quality purification such as decomposition of dissolved organic substance and inhibiting slimes, And it is possible to meet applications including pools or bath water, cooling water for cooling tower, and reutilizing of drainage water.
The water quality of more familiar water has been improved.