Hydrotech privides membrane separation systems for the following applications:

· Recycle beneficial material in textile industriesEmulsion Treatment in metal process
· Alkalis degrease agent recovery in automatic industries
· Coating emission treatment
· Phosphate liquid treatment
· Blood water treatment in slaughter mill

Oil/water

In today's industry, people attach importance to the oil waste water. Because they call for the environmental protection andthe green industny, so the result to treat the oil waste water willinfluence directly the maintenance and improvement for the water resource and environment.

Industrial oily wastewaters can be divided into three broad categories according to the distribution of the oil phase: Freefloating oil, Stable oil-water emulsions and sludge

Stable oi-water emulsions are generated in many diverse industries. Metal working operations use water-soluble coolantscutting and grinding oils, and lubricants fro machining. Metal cleaning tanks and alkaline degreasing baths generate anoily wastewater. Rolling and drawing operations use oil lubricants and coolants.

The stable oil-water emulsions are most dificult and at the same time most amenable to treatment by membranetechnology. it can be very useful in extending the useful life of wash water and reducing the waste disposal problem,saving chemical coagulation/flotation.

Hydrotech provides the reasonable membrane systems to meet the needs according to the inquiry of our customers andthe oil/water qualities.

Degreased liquid

In Automobile industry, metal cleaning tanks and alkaline degreasing baths generate oil waste water which contains dirtgrease, alkali and solvent etc. The temperature of degreasing baths is around 55-70'c, so how to treat this waste watelbecomes a big concern. Now UF can be very useful in this applicaion in extending the useful life of the rinsing water andreducing the waste disposal problem.

UF membrane can reject the oil in the waste water and recover the small molecular like alkali and solvent back to thedegreasing baths for reuse, The concentrated oil can have 30 times reduction in yolume.

UF olwater separation system has many advantages: high eficiency, low energy cost, compact system, easy operationgood separation performance and recycle the alkali at the same time. With the low operation cost, high production rateand automatic control, UF system will meet the reguirement of modern industry for high eficiency, environmental and lowcost.

Dye desalt

NF process can desalt and concentrate the dve. Reducing the salt from the dve can improve the printing intensily of thedve and produce a steady solvent condiion for adding the assistant reagent. Liguid dves reguest to remove nearly all othe salt from the dye in order to ensure the stability and solubility and improve the dyeing intensity.

Compared with the traditional pressure desalting filtration process, NF process can recycle the value material and savethe raw material and assistant material, reduce the waste water drain, decrease dry cost and shorten the process.

Synthetic size

The synthetic size is used to improve the strength and surface characteristics of warp yamns prior to weavinooperations where they are sublected to considerable abraslon and tensle stress instead ot the traditonal warrsizing agents. Due to the high cost of synthetic sizes, the recovery and reuse is a much more attractivesolution.

· Concentrate the size in the desizing both from 1-2% to 8-12% with Ultrafiltration (UF) system, recycledsizing can be reused in sizing process.

· Permeate from UF is the hot water (60 ~80'C), which can be reused in desizing process to save water
and energy.

· The system can recover 80%~ 85% sizes to minimize the waste water treatment.

Hydrotech can provide the turn-key system including the small test, middle test, project desian. equipmentmanufacture, system installation,commissioning for this application.

MBR+RO

Folowing the scarce water resources and severe polution, people pay much attention to the environmental protectionand the energy recovery. Hydrotech has engaged in the research and development and the application of the industrialdrainage for many years, at present, OCV MBR membranes have been used in the field.

After the treatment from the sewage plant in the E-coating workshop, the drainage feed into OcV MBR UF system andthen RO system for the further treatment to recycle, which reduce the drainage volume, save the water and cut pollution.