HTI Industrial & Municipal Wastewater Ultrafiltration Systems

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HTI Water Ultrafiltration SepraMem Boeing ProductUltrafiltration Case: HTI High Solids Ultrafiltration System Model Ultra-SepTM 30/400

Industry:Titanium Production
Client:Major U.S. Titanium Producer

Application:
Separation of machine coolants washed from titanium chips. The volume reduction is 95+% with the permeate going to the wastewater treatment facility and the concentrate going to an oil recovery unit.

Equipment:
HTI High Solids Ultrafiltration Model Ulta-SepTM 30/400 with the optional prefiltration skid.

Typical Process Data:

System Flow Rate: 2 gpm as permeate
System Pressure: 60 psig
System Temperature: 125°F
Fluid: Various metalworking fluids, machine lubricants and soap on scrap chips.
Influent Design Range: 0.5 to 4.0% oils
Ave. Effluent Design: 97% oil removal
Actual Results: 96.5% to 99%

System Description:
The HTI High Solids Ultrafiltration System Model Ultra-SepTM 30/400 uses HTI’s proprietary Ultra-SepTM oleophobic membrane and open channel spiral wound element. The system has three high temperature elements with a typical design flux rate of 1,000 gallons per day. The unit can achieve 3,000 gallons per day on a variable concentration waste stream. Each element is 8” diameter by 40” inches long with 65 square feet of membrane area. Prefiltration to 150 microns is accomplished using a bag filter. The system is cleaned on a weekly basis.

Summary:
The HTI Ultra-SepTM High Solids Ultrafiltration system meets new discharge regulations. A scrap chip washing system is a batch operation that produces a soap and emulsified oil wastewater plus two rinse cycles. The effluent requires oil removal prior to going to the wastewater treatment system. The oil water daily volume generated is about 2,500 gallons. The Ultra-SepTM 30/400 in this installation typically produces more than 2,375 gallons of clean permeate for discharge and less than 125 gallons of oil concentrate for chemical separation. After final separation, the oil is of sufficient quality to be hauled and recycled at no charge providing a significant savings.