Chemical Control Articles on Environmental XPRT

Chemical Engineering Magazine: Odor Issues and Solutions for Wastewater Treatment

Today, there has been a dramatic increase in the number of industrial operations that are located within or near small towns and even large cities. When local residents constantly smell these industrial processes – particularly from wastewater treatment — unhappy neighborhoods are generally the result. In addition, many wastewater facilities can no longer produce odors without facing ...

Sep. 8, 2017

By OMI Industries (OMI)

What classifies as water pollution and why is it an issue?

The UN declared 2005-2015 as the International Decade for Action ‘Water for Life’. Yet each day thousands of people still die as a result of contaminated water. This does not even take into account the millions of organisms that perish every year thank to polluted water sources. Water pollution is a huge issue that is made more so by the fact that unfortunately, water is ...

Sep. 13, 2017

By Aquaread Limited

Use of process analytics in cryogenic air separation plants – Case Study

For further treatment of primary and intermediate materials, large amounts of oxygen and nitrogen are required by many industries, e. g. chemical and petrochemical, metal, semiconductor and food industry, in machine construction and many others. Oxygen and nitrogen are, together with Argon, the main constituents of ambient air. They are obtained from there by means of the air separation ...

Sep. 20, 2017

By Siemens Industry, Inc. - Process Analytics

Approaches to Chemical Control

Hazardous material is anything that poses a threat to human health and the environment. Most hazardous materials are generated from chemicals. To provide the highest degree of protection for society and the environment from the dangers, stringent controls throughout the lifecycle of the material, starting with import or manufacture and ending with disposal, is necessary. Many governments consider ...

Nov. 21, 2006

By 3E Company

California to Control Chemicals of Concern

California has a well-established reputation as a trendsetter, but the gargantuan state may have outdone itself with the June 23 draft regulation released from the California Department of Toxic Substances Control (DTSC) for safer consumer product alternatives. The regulations are intended to implement the Green Chemistry Initiative signed into law by Gov. Schwarzenegger in ...

Sep. 1, 2010

By Acta Group

White paper - Chemical feed control

The controls, alarms and external contacts are shown on the drawings. As the amount of chemical needed to neutralize the wastewater varies exponentially from neutral pH 7, special consideration must be given to control overshooting the pH. Chemicals, especially viscous caustic soda, must be fully mixed in the compartment before more is added. Rather than modulating the pump settings, the pump is ...

Jan. 19, 2015

By W2 Systems

Chemical free, ultrasonic algae control

Among the numerous applications of ultrasound, the approach is used in the field of water treatment. In this scenario, forces other than cavitation forces are being used to achieve a certain goal. An example of such ultrasound systems which can be found on the market are the LG Sonic systems,which are manufactured to suppress algal growth and biofilm formation. The ultrasounds produced by using ...

Jun. 1, 2009

By LG Sonic

Chemical and ecological control methods for Epitrix spp.

Very little information exists in regards to the control options available for potato flea beetles, Epitrix spp. This short review covers both chemical and ecological options currently available for control of Epitrix spp. Synthetic pyrethroids are the weapon of choice for the beetles. However, the impetus in integrated pest management is to do timely (early-season) applications with something ...

Jan. 1, 2015

By GJESM Journal

Legal lookout: California to control chemicals of concern

Eighth-largest economy in the world drafts regulations to give itself power to control the chemical content of public products. California has a well-established reputation as a trendsetter, but the gargantuan state may have outdone itself with the June 23 draft regulation released from the California Department of Toxic Substances Control (DTSC) for safer consumer product alternatives. The ...

Oct. 4, 2010

By Bergeson & Campbell, P.C.

Modelling and simulation framework for pollution control of chemical processes

During process design, it is possible to evaluate and control pollution that might occur during actual operation. This paper presents computer-aided design framework that enables the design team to define process design model elements and to measure possible pollution at each design step using performance indexes of pollution measures as mapped to process variables. Modelling methodology, called ...

Mar. 16, 2007

By Inderscience Publishers

Chemical Corner

So, you’re well aware of all REACH and CLP regulations and you’ve gone to great lengths to ensure your operations and products are compliant with EU regulation. That’s great news. But in the case of Europe, that’s not where the regulations end. Beyond these requirements, you often have to comply with additional, country-specific rules to import, manufacture or sell ...

Jun. 29, 2013

By Enhesa - Global EHS & Product Compliance Assurance

Real time control for reduced aeration and chemical consumption: a full scale study

The use of the activated sludge process (ASP) for the nitrification/denitrification of wastewaters is commonplace throughout the UK and many other parts of the industrial world. Associated with this process are significant costs arising from aeration requirements and for selected sites, the need to provide an external carbon source. These costs can constitute up to of 50% of the total running ...

May 1, 2010

By IWA Publishing

Strategy for Complying with Air Pollution Control Regulations in the Chemical Industry

Untitled Document The Clean Air Act (CAA) was originally passed by the United States Congress in 1970 and subsequently revised in 1977 for the purpose of protecting human health ...

Oct. 1, 2001

By Trinity Consultants

Integrated process control for recirculating cooling water treatment in the coal chemical industry

This work focused on the integrated process of the recirculating cooling water (RCW) treatment to achieve approximate zero emission in the coal chemical industry. The benefits of fractional and comprehensive RCW treatment were quantified and qualified by using a water and mass balance approach. Limits of cycle of concentrations and some encountered bottlenecks were used to ascertain set target ...

Jan. 1, 2011

By IWA Publishing

Case study - Neutralization basin odor control for agricultural chemical production

Challenge: An agricultural plant located in the Midwest manufactures herbicides, pesticides, fungicides, and insecticides. Strict environmental regulations require the company to capture and neutralize all surface runoff and grey water produced at the plant before disposing into the municipal system. In addition, air permits prohibit any odors to cross their fence lines. As ...

Dec. 26, 2014

By OMI Industries (OMI)

The impact of Toxic Substances Control Act nomenclature on the commercialization of biobased chemicals

Regulatory Review is a regular column featuring updates on regulatory matters concerning oils- and fats-related industries. Moving from bench to market Many small companies or those new to chemical manufacturing are not aware of their obligations under TSCA. Most biobased chemical companies have likely operated under the research and development (R&D) ...

Jul. 1, 2015

By Bergeson & Campbell, P.C.

Watershed land use controls on chemical inputs to lake ontario embayments

Received for publication August 20, 2007. There is considerable interest in understanding the role of land use in controlling surface water quality. This study was conducted to assess the role of land cover in regulating temporal and spatial patterns in nutrients and major solutes in rivers that drain into Lake Ontario. Water samples were collected monthly from 22 river sites in subwatersheds of ...

Aug. 24, 2009

By Soil Science Society of America (SSSA)

Emission Control Strategies and Technologies for the Chemical Processing Industry: An interview with Chris Anguil

AC: Could you please provide our readers with a brief introduction to the industries that Anguil Environmental works within? CA: Our thermal and catalytic oxidizer systems are applied on any industrial process that is regulated for Volatile Organic Compounds (VOCs), Hazardous Air Pollutants (HAPs) or Nitrogen Oxides (NOX). Some of these industries include chemical ...

Jan. 6, 2015

By Anguil Environmental Systems, Inc.

Chemical feed control using coagulation computer models and a streaming current detector

This paper describes the use of both the streaming current detector (SCD) and coagulation computer models to provide real-time data for required coagulant feed rates. The method for computer modeling of coagulation and other water treatment processes/operations was originally developed for Lake Michigan Filtration Plant in Grand Rapids, Michigan (MI). Since the initial implementation, a number ...

Jun. 21, 2013

By IWA Publishing

Chemical blending is the most frequent kind of chemical process

Chemical blending is one of frequent kind of chemical process that is commonly used in application. The procedure of mixing can potentially save manufacturers time, labor, inventory, and transportation costs. Organic and inorganic chemicals can be blended. Substance could be blended in liquid form to a variety of pH levels and viscosities. This services ...

Nov. 15, 2013

By GlobeCore GmbH

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