“Jan-Lagrand” water treatment works: UF/RO from technological novelty to full size application

2002 ◽  
Vol 2 (5-6) ◽  
pp. 285-291
Author(s):  
F. de Bruijn ◽  
C. Kamp ◽  
D. Eddy ◽  
J.E. Kools
Keyword(s):  
Water Treatment ◽  
System Development ◽  
Membrane Integrity ◽  
Conceptual System ◽  
Full Size ◽  
Integrity Testing ◽  
On Line ◽  
Membrane Pretreatment ◽  
Research And Design ◽  
Chemical Disinfection

In Heemskerk the world's largest dual membrane municipal water treatment works ( WTW) “Jan-Lagrand” (55 Ml/d or 2,250 m3/h or approximately 15 MGD) was commissioned at the end of 1999. At Heemskerk WTW, pretreated surface water is subsequently treated by ultrafiltration (UF) and reverse osmosis (RO). The RO permeate is directly blended into drinking water without chemical disinfection. Before Heemskerk the dual membrane concept had not been considered on this scale, and during project preparation numerous developments and innovations needed to be flexibly accommodated into the ongoing design. Conceptual system development, pilot research and design and engineering were successfully conducted “in parallel”. This paper deals with the innovations that were materialized in Heemskerk, e.g. UF-membrane pretreatment, on line membrane integrity testing (UF and RO) for disinfection approval, and a dual floor building concept for membrane installations. This paper explains how these innovations could be accommodated into an ongoing design, while innovative testing was still proceeding.

Development of a new integrity testing system

2003 ◽  
Vol 3 (5-6) ◽  
pp. 101-108 ◽  
Author(s):  
S.C.J.M. van Hoof ◽  
L. Broens ◽  
A. Nahrstedt ◽  
S. Panglisch ◽  
R. Gimbel
Keyword(s):  
Membrane Filtration ◽  
Potable Water ◽  
Challenge Test ◽  
Membrane Integrity ◽  
Testing System ◽  
Integrity Test ◽  
Integrity Testing ◽  
Pressure Test ◽  
On Line ◽  
Water Supply Company

As membrane filtration systems are more commonly used in the water treatment industry, the call for a reliable, fast and on-line integrity testing system becomes more urgent. Especially where membrane filtration is used in potable water production for the removal of pathogenic microorganisms, the integrity of such a system is of the utmost importance. Membrane integrity testing can be performed in a number of ways, where the pressure-hold or vacuum-hold test and the diffusive airflow test are well known. Although relatively widely applied in membrane plants worldwide, all of these methods exhibit major drawbacks like off-line testing and the lack of a direct relationship between the measured data and the removal efficiency (log-removal). To overcome the above mentioned drawbacks of conventional integrity testing systems, a new kind of integrity test, the Spiked Integrity Monitoring System or SIM®-System was developed by NORIT Membrane Technology in close co-operation with Water Supply Company North Holland and IWW Rhenish-Westphalian Institute for Water Research, which combines the accuracy of a challenge test with the speed of a pressure test, while keeping the system under test in operation.

scholarly journals On-line Fault Diagnosis of Produced Water Treatment with Multilevel Flow Modeling

2018 ◽  
Vol 51 (8) ◽  
pp. 225-232 ◽  
Author(s):  
Emil Krabbe Nielsen ◽  
Stefan Jespersen ◽  
Xinxin Zhang ◽  
Ole Ravn ◽  
Morten Lind
Keyword(s):  
Fault Diagnosis ◽  
Water Treatment ◽  
Produced Water ◽  
Flow Modeling ◽  
Produced Water Treatment ◽  
On Line ◽  
Multilevel Flow Modeling

Experiences in integrity testing ultrafiltration membranes at a large potable water treatment works

2003 ◽  
Vol 3 (5-6) ◽  
pp. 1-7
Author(s):  
S. Oxtoby
Keyword(s):  
Water Treatment ◽  
Membrane Filtration ◽  
Membrane System ◽  
Primary System ◽  
Secondary System ◽  
Ultrafiltration Membranes ◽  
Integrity Testing ◽  
Particulate Loads ◽  
Integrity Tests ◽  
The Uk

The Clay Lane Water treatment works of Three Valleys Water, in the south east of England, is currently the world’s largest ultrafiltration works with a capacity of 160 Ml/d. It utilises ultrafiltration membranes constructed as hollow fibres with a number of membrane elements in a pressure housing. The plant has been operating since spring 2001. The decision to install the system was made in anticipation of the introduction of tighter regulations on Cryptosporidium in water supplies in the UK. Once a decision was made to proceed with a membrane system the ability to monitor the integrity of the system and to repair problems became a crucial design parameter that was a critical part of membrane selection. The need to include a system affected the design of the filtration units offered by manufacturers. The available systems for integrity testing are reviewed and the reasons for selecting the system adopted are discussed. These include particle counting and the dosing of test particulate loads. The different forms of air passage integrity tests are discussed and the displaced air flow system used is described. Once a failure has been detected it must be traced so that the fault can be repaired. This procedure is described together with the techniques of pin repair of damaged fibres. At Clay Lane and other membrane filtration sites the backwash water from membrane cleaning is recovered using a secondary membrane system. Currently the secondary system operates in the same integrity testing regime as the primary system and the secondary filtrate is returned ahead of the primary membrane system. The relative merits of this system, or the alternative of adding the recovered water to the filtrate are discussed.

Design Guidelines for The User-System Interface of On-Line Computer Systems: A Survey Report

1981 ◽  
Vol 25 (1) ◽  
pp. 509-512 ◽  
Author(s):  
Sidney L. Smith
Keyword(s):  
Information System ◽  
System Development ◽  
Computer Systems ◽  
Design Guidelines ◽  
Information System Development ◽  
Requirements Definition ◽  
Survey Report ◽  
On Line

From a survey of 77 people involved in information system development, it is estimated that on average more than 30 percent of operational software is devoted to the user-system interface (USI). Improvements are needed in early requirements definition, guidance and documentation of USI design.

scholarly journals On-line monitoring of organic matter concentrations and character in drinking water treatment systems using fluorescence spectroscopy

2016 ◽  
Vol 2 (4) ◽  
pp. 749-760 ◽  
Author(s):  
Y. Shutova ◽  
A. Baker ◽  
J. Bridgeman ◽  
R. K. Henderson
Keyword(s):  
Drinking Water ◽  
Organic Matter ◽  
Water Treatment ◽  
Fluorescence Spectroscopy ◽  
Drinking Water Treatment ◽  
Robust Method ◽  
On Line

There is a need for a rapid and robust method of organic matter (OM) monitoring during drinking water treatment.

Research and Implementation of the Optimal Design Pattern of Electronic Commerce Based on J2EE

2011 ◽  
Vol 143-144 ◽  
pp. 849-853
Author(s):  
Yi Ran Wang ◽  
Xing Jin Zhang
Keyword(s):  
Optimal Design ◽  
Electronic Commerce ◽  
Design Pattern ◽  
System Development ◽  
System Structure ◽  
Application Layer ◽  
Development Cycle ◽  
On Line ◽  
The Cost ◽  
J2ee Architecture

Analyzed and recomposed to J2EE architecture, and during research of design pattern, the document bases on existing frame for achieving more application-layer reuse to engineer framework, and forms an optimal design pattern of electronic commerce. The pattern is actualized in on-line shopping system found on J2EE. The experiment results show that it reduces system development cycle, optimizes system structure, enhances the system's performance, and decreases the risk and the cost in software development when the framework and design pattern are combined artfully to use on electronic commerce

Monitoring On-Line and Control of Sludge Concentration in Sewage Treatment System

2013 ◽  
Vol 373-375 ◽  
pp. 897-901
Author(s):  
Lian Qing Yin ◽  
Chun Xiao Yin ◽  
Xue Zhou ◽  
Jia Liu
Keyword(s):  
Water Treatment ◽  
Sewage Treatment ◽  
Settling Tank ◽  
Great Influence ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Treatment System ◽  
On Line ◽  
And Control ◽  
Sludge Concentration

The reuse of industrial waste and urban sewage is a vital method for solving the shortage of water resource in China. Settling tank as a processing link in water treatment system widely used exercises a great influence on sewage treatment efficiency, and sludge emissions have a great influence on the operation of water treatment plant. Manual mud and mechanical dredge are widely used in most of the water treatment plants from the current domestic. The design used ultrasonic as a method for determination of sludge concentration, developped corresponding application control software, and finally completed a reasonable and feasible for settling tank intermittent discharge of sludge monitoring and emission control system.The result of our simulation system shows that the program operation is stable and maneuverability, and this set of monitoring on-line and control system has good application and development foreground.

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