chemical dosing Articles
-
Chemical dosing and blending - the role of precision actuators
Overview Chemical dosing is the introduction of a measured quantity of a chemical into a process fluid so that a chemical reaction occurs in the process fluid or a particular blend of fluids is achieved. Process control actuators have an important role to play in chemical dosing and blending. Constant, precise control of the volume of fluid injected into the process is dependent on the accuracy ...
By Rotork plc
-
Industrial - Plasterboard Manufacture - Case Study
Project Title - Fluidiser / Retarder chemical dosing Client - Siniat Ltd Project Value - £39K Chemical - Chryso Gypflu CA / Plast Retard L Duration - 10 weeks Our Services Design, build and site install chemical dosing systems to deliver precise repeatable flows of stabilising chemical in order to maintain continuous reliable production output. Details Plasterboard is ...
By WES Limited
-
Client : A successful food and drink manufacturing company
Job Title : Replacement chemical dosing pipework Area : Chichester and Selsey, West Sussex The client had a problem with leaking Citrus Acid and Sodium Hypochlorite on their food preparation production line. New uPVC pipework was installed and re-routed to eliminate further damage from foot traffic and catchpots were added at strategic points to collect any accidental leakage. This new ...
By WES Limited
-
Verder UK Ltd Chemical Dosing Open Day
Verder UK Ltd will be hosting an open day allow all customers and those looking for a chemical dosing solution to see first-hand how the Verder Project Team can meet their requirements. On the 25th September, Verder will have on show a variety of chemical dosing packaged systems finished to the site specification. The Verder Project Team and technical specialists will be on hand to brief all ...
-
Controlling chemical dosing for sulfide mitigation in sewer networks using a hybrid automata control strategy
Chemicals such as magnesium hydroxide (Mg(OH)2) and iron salts are widely used to control sulfide-induced corrosion in sewer networks composed of interconnected sewer pipe lines and pumping stations. Chemical dosing control is usually non-automatic and based on experience, thus often resulting in sewage reaching the discharge point receiving inadequate or even no chemical dosing. Moreover, ...
-
Microsieving in primary treatment: effect of chemical dosing
Primary and chemically enhanced primary wastewater treatment with microsieving (disc or drum filtration) was studied at the large pilot scale at seven municipal wastewater treatment plants in Europe. Without chemical dosing, the reduction of suspended solids (SS) was (on average) 50% (20–65%). By introducing chemically enhanced primary treatment and dosing with cationic polymer only, SS ...
-
Industrial cooling tower - The Netherlands, 2.000 m3/d - Case Study
Project Description: Lenntech has engineered, manufactured and assembled a SPX Marley cooling tower on a petrochemical industrial site in the Netherlands. The cooling tower is used to cool water coming from one of the chemical processes on site. The cooling tower system is equipped with top brand instrumentation and equipment. The system is completely from European origin and will be delivered ...
-
Bottled water company - Algeria, 300 m3/d - Case Study
Project Description: Lenntech has been awarded a contract for the engineering, manufacturing and assembly of a turnkey decarbonisation system in a bottled water factory in the Algeria. The treated water is used for the preparation of bottled water for local population. The water treatment system is equipped with top brand instrumentation and equipment. The system is completely from European ...
-
Observing the effects of digestion and chemical dosing on the calorific value of sewage sludge
New legislation being introduced in Europe for the removal of the macronutrients nitrogen and phosphorous is causing the fundamental composition of sludge to change. Nitrogen removal requires longer residence times during activated treatment, and phosphorous removal can involve the supplementation of chemicals such as ferric. In addition, there is increasing pressure to capture energy from sludge ...
-
The challenge of multiple chemical sensitivity
Environmental health professionals frequently come across a health-related problem with no clear cause-and-effect relationship. A typical case occurs when a person complains of experiencing symptoms, often in an indoor setting, that may vary from vague to severe. Multiple Chemical Sensitivity (MCS) may be a factor at play in some of these situations. The condition is characterized by persistent ...
-
Domestic desalination system - Greece, Corfu, 25 m3/d - Case Study
Project Description: Lenntech has engineered, manufactured and assembled a turnkey reverse osmosis system on the island of Corfu in Greece. The desalinated water is used for domestic purposes. The reverse osmosis system as installed at this particular location is one of Lenntech´s standard models. The LennRO system series are equipped with top brand instrumentation and equipment. The ...
-
Age of onset in health impact assessment of chemical substances
The age at which a disability starts is important information when performing a quantitative health impact assessment of any particular chemical substance. From the fields of epidemiology and toxicology it is known that this age of onset may be influenced by chemical exposure and that this influence is dose (or exposure) dependent, i.e. effects will occur at younger ages when dose is increased. ...
-
Water Treatment Plant
Aqua Clear Water Treatment Specialists offers full water treatment plant designs from beginning to end. Utilizing state of the art reverse osmosis technology, as well as high quality pre and post filtration systems and chemical dosing treatment. Contact us today to find out more on how Aqua Clear Water Treatment Specialists can custom engineer a water treatment plant for your specific water ...
-
DAF Wastewater Treatment System - Case study
Dr. Oetker, a company that produces frozen pizzas, required a treatment system to reduce the wastewater load and meet municipal government regulations for their new North American manufacturing facility located in London, Ontario, Canada. H2Flow provided a physical/chemical treatment system based on dissolved air floatation which is designed for a flowrate of 4.2 m3/hr. H2Flow provided a ...
-
4 Ways to Determine the Type of Chemical Dosing Agent to Use
Studies show freshwater makes up only 3% of all water on Earth. With the numerous manufacturing plants discharging industrial effluent in lakes and rivers, the amount of freshwater available to us is bound to reduce further. Industrial effluent contains toxic material which, if disposed of in bodies of water, leads to contamination. Companies have set up water treatment systems to treat ...
-
Modeling NOM removal by softening in a surface water treatment plant
Phenomenological models and hybrid phenomenological–chemometric models were developed to predict natural organic matter (NOM) removal based on the real water treatment data from the city of Minneapolis over a 3 year period. The analysis of the modeling results showed that the phenomenological model was able to capture the major variations of NOM removal but it tended to over predict 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 ...
-
Oxidation and coagulation of humic substances by potassium ferrate
Ferrate (FeO42−) is believed to have a dual role in water treatment, both as oxidant and coagulant. Few studies have considered the coagulation effect in detail, mainly because of the difficulty of separating the oxidation and coagulation effects. This paper summarises some preliminary results from laboratory-based experiments that are investigating the coagulation reaction dynamically via a PDA ...
-
Local company T-T, is a `grand design` case study
Onneley based T-T Pumps with their diverse capabilities and products were selected to supply the pumping system for the Grand Designs project which will be aired on Wednesday 28th September 2011. Incorporated in the restorations of the rusting and rotten hulk of an old lifeboat station in Tenby, the company and its team supplied and commissioned a system to deal with the buildings wastewater. ...
-
Kinetic modelling approach as a decision support tool for chloraminated distribution systems
Disinfection and distribution system management of chloraminated systems can be a challenging task for water operators due to the complexity of chloramine chemistry. Formation of chloramines and maintenance of a suitable disinfection environment requires careful control of several operational parameters at the plant and at different locations along the distribution system. A mathematical model ...
Need help finding the right suppliers? Try XPRT Sourcing. Let the XPRTs do the work for you