feed water Articles
-
QUA Supplied FEDI Stacks to Ethydco Refinery
Project Background The Egyptian Ethylene and Derivatives Company (ETHYDCO) is a joint venture company established with the purpose to produce Ethylene, Butadiene and their derivatives (Polyethylene, Poly Butadiene). As part of ETHYDCO’s petrochemical complex in Alexandria, a 460,000 T/Y ethylene plant and a 20,000 T/Y butadiene extraction plant were built. For its water needs, ETHYDCO ...
-
Hybrid TiO2 photocatalytic oxidation and ultrafiltration for humic acid removal and membrane fouling control
Hybrid UV/TiO2 photocatalytic oxidation (PCO) and ultrafiltration (UF) process (PCO-UF) were used to remove humic acid (HA) and control membrane fouling. The PCO-UF process showed advantages in terms of higher removal rate of HA, higher permeate flux and less membrane fouling over UF alone and PCO alone on HA removal and membrane fouling control. Membrane material and pH of feed water were shown ...
-
Verification of automatic coagulant dosage control technology based on aluminum concentration at a water purification plant
An automatic coagulant dosage control technology for water purification plants was developed to deal with rapid changes of feed water quality. Control logic was developed to decide coagulant dosage based on aluminum concentration in the mixing tanks. A coagulant-sedimentation process apparatus was installed in December 2010 in a water purification plant, and the coagulant dosage control test ...
-
Danfoss, Nordborg, Denmark - Case Study
ELTS 1500 Capacity of 1500 l/h This plant treats oil emulsion from the metal working industry. The feeding water has a content of oil of 5-10%. Through a 2 step evaporator the liquid is being reduced, resulting in a content of oil of 90-95%, which is high enough for being used as fuel. The 2 steps consist of one natural circulation evaporator and one flash evaporator. The heat for ...
-
Cetamine® - film forming amine technology for boiler feed water treatment
This article describes an innovative technology based on film forming amines for the treatment of boiler feed water. A good treatment programme for boiler feed water is crucial to the smooth operation of steam generators. Faulty treatment can cause damage to the plant, with attendant high costs. Download the article to find out more. A good treatment programme for boiler feed water is crucial to ...
-
Forever Chemicals (PFAS) in Water, Wastewater and Sewage
Forever Chemicals (PFAS) in water and wastewater have become a major concern because of their negative effects on human health and the environment The best technology needs to be carefully chosen based on the feed water or wastewater characteristics. To do so, a component analysis and treatment feasibility tests need to be performed. Get in touch with YASA ET engineers to find the best treatment ...
By YASA ET
-
QUA Provides FEDI technology to Sohar Refinery
Project Background Orpic (Oman Oil Refineries and Petroleum Industries Company) required a thermal seawater desalination solution as part of its Sohar refinery improvement project to ensure an uninterrupted supply of fresh feed water to for its boilers. Orpic decided that a Multi Effect Distillation with Thermal Vapor Compression (MED-TVC) Seawater Desalination system was suited for its water ...
-
Comparative investigation of artificial neural network learning algorithms for modeling solar still production
Three artificial neural network learning algorithms were utilized to forecast the productivity (MD) of a solar still operating in a hyper-arid environment. The learning algorithms were the Levenberg–Marquardt (LM), the conjugate gradient backpropagation with Fletcher–Reeves restarts, and the resilient backpropagation. The Julian day, ambient air temperature, relative humidity, wind speed, ...
-
Spray flash evaporator for low-temperature saline water desalination application
A new spray-type flash evaporator is suggested for the application of saline water desalination. The flash evaporator is 1000 mm in height and 1200 mm in diameter, with a water injection arrangement inside. The evaporator design is based on experiments conducted at vacuum pressures between 10 and 18 mm of Hg, and at saline feed water temperatures between 26?C and 32?C. The saline water is ...
-
Kurita new case study available - Successful treatment with Kuriverter IK-110 in an industrial RO application
A reverse osmosis plant for the industrial water preparation faced a biofouling problem which involved a large number of annual cleanings. The feed water used in the RO plant is SWRO and the permeate is used as make up water for the boiler system. Learn how the treatment with Kuriverter IK 110 leads to less annual cleanings and RO replacement. Download our new case study here: ...
-
Study of fouling in two-stage reverse osmosis desalination unit operating without an inlet pH adjustment: diagnosis and implications
In the current work, the diagnosis of a reverse osmosis desalination unit is reported. Over the two last decades, the studied desalination unit was supplying a 1,200 bed hotel. The feed water was driven from a well near the sea. The desalination unit has two stages giving an average recovery equal to 81%. The behaviour of all water streams with respect to aggressiveness and scaling tendency ...
-
Exergy analysis of turbulent flow for tubes of power plant feed water heaters and condensers
The thermal performance of heat exchangers that are essential units in power plants can be substantially improved by a number of augmentation techniques. The entropy generation and exergy destruction rate due to the flow friction and heat transfer across temperature differences were proposed numerically to evaluate the benefits of utilisation of these techniques. Enhanced tubes with either ...
-
Energy and exergy analyses of a supercritical power plant
Energy and exergy efficiencies of a supercritical power plant have been studied in this paper. The effect of ambient weather condition was considered on the condenser pressure. It was shown that high ambient temperature has more adverse effect on the exergy efficiency than the energy efficiency. As ambient temperature increases, the exergy efficiency of the boiler, condenser, heaters and feed ...
-
Combined ultrafiltration-electrodeionization technique for production of high purity water
Electrodeionization (EDI) is the most common method to produce high purity water used for boiler feed water, microelectronic, and pharmaceutical industries. Commonly, EDI is combined with reverse osmosis (RO) to meet the requirement of EDI feed water, with hardness less than 1 ppm. However, RO requires a relatively high operating pressure and ultrafiltration (UF) as pretreatment which results ...
-
Green alternative methods for voltammetric analysis in different water matrices
Mercury-free methods for determination of heavy metals in boiler feed, drinking, and sea water samples. Stripping voltammetry uses electrochemical sensors for the determination of heavy metal ions in different types of samples. These can include boiler feed water, drinking water, sea water, beverages, and even industrial samples like plating baths. Low detection limits (between ...
By Metrohm AG
-
Confirmation of the correlation between membrane fouling in microfiltration and biopolymer concentrations in various Japanese surface waters
A variety of surface waters used for drinking water sources were collected from different parts of Japan to investigate a correlation between the concentration of hydrophilic biopolymer (e.g. proteins and polysaccharides) in the feed water and membrane fouling in microfiltration. Hollow-fiber membranes made from polyvinylidene fluoride with a nominal pore size of 0.1 μm were used in the ...
-
Influence of feed quality on seawater reverse osmosis performance
The trouble-free operation of a Reverse Osmosis (RO) plant relies on the quality of the treated feed water, which highlights the need for optimisation of the pre-treatment steps. The quality of raw seawater varies with time in terms of suspended and colloidal load, along with the dissolved salt content. In a conventional pre-treatment scheme, consisting of clarification and particulate and micron ...
-
Amiad’s pre-treatment systems used in NEWater factories
In this article we focus on the NEWater project in Singapore, where high grade reclaimed water, to supplement water supply requirements, is produced from treated secondary effluent at NEWater factories. We describe how Amiad’s ABF10000 (BRUSH) filters are used in NEWater factories for the effective pre-treatment of secondary treated effluent. After this screening, subsequent ...
-
Flue Gas Desulfurization Treatment - Finland, Flow 42 m3/hour - Case Study
Project Description: Lenntech has engineered, installed and commissioned a double pass RO system, first pass is a high recovery CCRO system (93%) followed by a conventional RO system (95%) for a boiler feed water application in Finland. The treated water is used as make-up water for the boiler line, demineralizing the water of scaling potential. The complete system is equipped with top brand ...
-
Ion transport characteristics in nanofiltration membranes: measurements and mechanisms
Ion transport characteristics during nanofiltration (NF) were investigated by measuring effective osmotic pressure and diffusivity experimentally. Effective osmotic pressure and diffusivity were measured through lab-scale transport and diffusion tests. First, it was shown that the water flux across NF membranes decreased dramatically with increasing ionic strength because of the noticeable ...
Need help finding the right suppliers? Try XPRT Sourcing. Let the XPRTs do the work for you