One of water treatment technology that can eliminate or filter out bacteria is Process Ultrafiltration (UF) and Ultraviolet Process. The purpose and goal of this project is to eliminate the bacteria from raw water in paint manufacture. This is a sample of UF Technical Proposal that i design my self as Water Treatment Engineer.
TECHNICAL PROPOSAL ULTRAFILTRATION Water Treatment Plant Of Paint Factory REMOVAL BACTERIA WITH ULTRAFILTRATION AND ULTRAVIOLET TECHNICAL PROPOSAL I. BACKGROUND The quality of paint on paint factory that uses water as a solvent (Water- Based Paint Manufacturing) is very dependent on the quality of water used. The parameter significantly impact the quality of paint is the bacterial content in water. Bacteria-contaminated paint will decrease in the quality and shortens lifetime of the paint. Therefore, to ensure the raw water free from bacterial contamination, it will be needed a system process to eliminate bacteria. One of water treatment technology that can eliminate or filter out bacteria is Process Ultrafiltration (UF) and Ultraviolet Process. II. PURPOSE AND GOAL The purpose and goal of this project is to eliminate the bacteria from raw water in paint manufacture. III. PROCESS DESCRIPTION Ultrafiltration and Ultraviolet Disinfection are two process will be applied to Paint’s Factory WTP to remove bacteria from raw water. Raw water from reservoir is flowed into Ultrafiltration membrane with pore sizes <0.01-0.02 Micron. Then the water is collected in Product Water Tank and subsequently flown to Ultraviolet existing system which aims to remove the rest of the remaining bacteria from Ultrafiltration process and remove bacteria that could growth in piping line. UF efficiency for bacterial removal was 90% on average within three years. UF 95% efficiency will only be achieved in the first year and then will decline. This is caused by using chemical backwash during chemical cleaning. So that the Total Bacteria Removal Efficiency with the above system will only reach 95% 1 Chlorine usage for maintenance process of UF System are used in the process: 1. Chemical Enhanced backwash (CEB); in this process using chlor dose 50 ppm. Time duration for CEB process are 20 seconds for every 15 minutes filtration. Meanwhile backwash debit is 18 m3/hour, therefore this CEB produce wastewater 6.75 m3/shift (8 hours) 2. This process using chlor dose 50 ppm with duration time for Maintenance Cleaning is 60 seconds for every 12 hours. After membrane was soaked by using 50 ppm chlor, then Sodium Bi- Sulphite (SBS) was flowed as long as 30 seconds to neutralize chlor. Debit for MC Process is 18 m3/hour, therefore MC process will produce 600 Litre/day as wastewater containing chlor, and also will produce 300 Litre/day as wastewater containing SBS. 3. This process will be needed if Differential Pressure between in and out Filtration greater than 2 bar. This is shown that UF have clogged. CIP Frequency depend on entering raw water quality, it predicted CIP Process conducted once in 2 weeks. In CIP process, chor solution was circulated with 3000 ppm chlor concentration within 1-3 hours. Circulation of Chlorine solution is conducted to remove organic foulants. And then circulation with 3% Citric Acid solution is conducted to remove inorganic foulants. Volume of each CIP Solution is 300 Litre. Before they were wasted into Drainage, this CIP solution should be neutralized by SBS solution and NaOH. 2 IV. PROSES FLOW DIAGRAM 3 V. EQUIPMENT SPECIFICATION 1. Product Water Tank Volume : 8000 Liter Diameter : 1430 mm Height : 3240 mm Material : Stainless Steel Qty : 2 unit 2. UF Sistem Module : HFS-2020 Qty of Module : 3 Unit Air Scouring Blower Cap. : 4.8-9 m3/hr/module Membrane Material : PVDF Nominal Size : 0.02 micron meter Membrane Surface Area : 72 m2 Dimension : 8.5 Inches Length of Module : 2,160 m Filtration Methode : Out to In, Dead End or Cross Flow Max. TMP : 300 kPa (43.5 PSI) Normal Operation TMP : <200 kPa (29.0 PSI) Operating Temp. Range : 0-40 oC Operating pH Range : 1-10 Cleaning pH Range : 0-12 Cleaning Temp. Range : 0-40 oC Max. Concentration of NaClO : 3000 mg/L (as Cl2) Max. NaClO Expossure : 1,000,000 mg/L Maximum acid contact time : 1,000 hours (pH>0) 4 Accessories: - Feed Pump Capacity : 12 m3/jam Head : 2 bar Motor : 1.1 kW Housing Mat’l : Cast Iron Material Impeller : Stainless Steel Qty : 1 unit - Backwash Pump Capacity : 18 m3/jam Head : 2 bar Motor : 2.2 kW Housing Mat’l : Cast Iron Material Impeller : Stainless Steel Qty : 1 unit - CIP Pump Capacity : 9 m3/jam Head : 2 bar Motor : 1.1 kW Housing Mat’l : Stainless Steel Material Impeller : Stainless Steel Qty : 1 unit - Dosing pump for Cl2 and SBS of CEB Capacity : 17 LPH Pressure : 10 Bar Voltage : 240 Volt Qty : 2 unit 5 - Air Scouring Compressor Air Capacity : 300 Liter/menit Motor : 3.7 kW Qty : 1 unit - CIP Tank Volume : 250 Liter Material : Polyethilene Qty : 1 unit - CEB Tank (Chlorine & SBS Tank) Volume : 250 Liter Material : Polyethilene Qty : 2 unit - Pre Cartridge (smaller than 200 micron meter) - PLC Control Panel Schneider Telemecanique - Internal Piping UF Inlet Piping Material : PVC Outlet Piping Material : SUS-304 3. Piping - Line from existing Reservoir to UV & UF Skid Material & Dimension : PVC Rucika AW, Diameter 2” - Line from UF to PWT to existing Distribution line Material & Dimension : SUS 304, Diameter 3” - Line Backwash Material & Dimension : PVC, Diameter 3” - Line CIP Material & Dimension : PVC, Diameter 2” - Line Drain Material : PVC 6 4. Sanitation Distribution Loop System (by others) Methode : Biocide or Steam 7
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