Road Dust Control

Archive for the ‘dust control’ Category

Australian Dust Control will be exhibiting their shaker dust collectors at the School Resources Expo at Rosehill Gardens on 12 and 13 March 2010. Apart from being able to assist with any technical and sales enquiries, their school shaker dust collectors will be on display. Schools across Australia are taking advantage of recent Government funding to upgrade their existing dust and fume extraction systems in woodworking classrooms, welding workshops, fine arts and industrial design departments.

Australian Dust Control designs and installs a range of school shaker dust collectors that offer the following key features and benefits:

* These dust collectors are environmentally friendly
* Shaker dust collectors offer energy efficiency
* The School Shaker dust collectors can be delivered to site pre- assembled
* Dust collectors can easily be placed on the base framework

An investment in school shaker dust collectors from Australian Dust Control will give schools peace of mind knowing that their students and teachers have access to a high standard of protection available. Australian Dust Control complies with all selection criteria and OH&S guidelines set forward by schools and other learning institutions, and the innovative and flexible designs of dust extractors by Australian Dust Control are available at competitive prices.

Tags: dust collectors, dust extractors, fume extraction systems, base framework, rosehill gardens

Encouraged by efforts from the West Indies Alumina Company (Windalco) to eliminate a dust nuisance from its red mud (waste disposal) lake at Battersea in Central Manchester, residents have reportedly suspended plans to sue.

“The objective was never about money, the aim always was to get the company to do the right things,” Battersea resident Mark Cameron told the Sunday Observer last week.

Cameron was one of the leading voices protesting the dust nuisance,

“The feeling now is that they (Windalco) are now on the right track though there is a lot more that needs to be done,” he added.

Cameron had said late last month that a member of his community was preparing to file a “class action” law suit against the bauxite/alumina company as a consequence of “the clouds of toxic dust” from the dry lake invading their homes and endangering health.

But over the last two weeks the waste disposal site — which over a period of months had become a dust bowl — has been flooded with water.

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Tags: dust monitors, dust nuisance, mark cameron, oversight agency, red mud

Two politicians have raised concerns about Penrice mine dust.

One has suggested a drastic remedy.

David Winderlich, independent member of the Legislative Council, called for the state government to ban Penrice from mining on hot and windy days.

Mr Winderlich and Ivan Venning – the Member for Schubert – have both highlighted Penrice dust as a health and environmental issue.

They believe Environmental Protection Authority (EPA) tests show the mine has produced dangerous levels of fine-particle dust – in breach of the National Environment Protection Monitoring standard.

The results were recorded by a ‘hotspot caravan’ that has been located near the mine for the past nine months.

Penrice Soda Holdings, the company that owns the Barossa mine, has rejected the figures.

Guy Roberts, Penrice managing director and chief executive officer, revealed the mine’s own EPA dust monitors had not recorded any dust emissions that breached standards.

“We deny these exeedences,” Mr Roberts said.

“The supposition is those results picked up by the hotspot caravan were due to outside mine factors.”

The ‘hotspot caravan’ monitoring station was put in place on March 31, for a period of 12 months.

Mr Venning said it was installed after appeals by nearby neighbours.

But he was worried the monitor did not meet national standards.

“The EPA is supposed to be the community’s watchdog authority with regard to environmental issues, but in this case it appears they have dropped the ball,” Mr Venning said.

“Is this body serious about enforcing environmental standards or are they merely a toothless tiger?”

Meanwhile, the mine has already committed to install a new dust suppressant system in coming months.

This will come at a cost of $200,000 and be located inside the mine’s aggregate crushing plant – one of the known sources of dust emissions.

This move follows trials of a water soluble, biodegradable foaming dust suppressant system.

However, Mr Venning urged the mine to do more.

He wants the crusher and conveyer belts enclosed, to help reduce dust emissions.

“No one including myself wants to see the mine closed,” Mr Venning said. “Everyone is aware of the employment the mine provides for locals and that the soda ash extracted from the mine is used to make glass bottles – in particular wine bottles.”

Mr Venning believes the mine can fit in with the community.

“But measures need to be taken to ensure this happens,” he said.

Tags: dust monitors, toothless tiger, dust emissions, dust suppressant, environmental protection authority

If containing dust on bulk out-loading is an issue then this award winning Dust Suppression Loading Hopper could be the answer.

The DSH hopper has tackled dust issues on sites handling products such as fertilisers, grain, pet food, sugar, salt, sand and gravel, with throughputs of up to 800 tonnes per hour.

At the point of loading the hopper concentrates the discharge of dry goods into a solid column through free air into any target, including trucks, rail cars, stock piles, storage containers or bags.

Uncomplicated to install and easy to operate and maintain, the hopper reduces hazards, health risks, dust, wastage, cleaning and maintenance costs.

The hoppers are manufactured in Polyethylene, Carbon steel, 304 and 316 stainless and provide a cost-saving and effective solution for the transferral of many dry granular goods.

Contact the Sales Team at Guttridge Limited for advice on how the DSH Hopper can work for you.

For more information contact;

Guttridge Ltd. Spalding, Lincs.
Tel 01775 765300

Web: www.guttridge.co.uk

Tags: stock piles, sand and gravel, dust suppression, storage containers, spalding lincs

An introduction to the EPA’s effluent limitations guidelines and source performance standards.

Check dams at a construction site are configured for use of chemical flocculant treatment.
Jesse Pritts, EPA

Although streams and rivers naturally carry sediment loads, discharges associated with construction activity can elevate these loads to levels above those in undisturbed watersheds. Discharges from land disturbance can increase the proportion of silt, clay, and colloidal particles in receiving streams because these fine-grained particles may not be managed effectively by conventional erosion and sediment controls that rely on simple settling.

In response to these issues, the U.S. Environmental Protection Agency (EPA) promulgated effluent limitations guidelines (ELGs) and new source performance standards for discharges from construction and development (C&D) sites on Dec. 1, 2009. ELGs are technology-based standards for control of wastewater and stormwater discharges from various categories of industry and are not risk-based, so different standards are not set for different receiving waterbodies. ELGs can be numeric standards (i.e., discharge limitations) and/or best management practices (BMPs) and process changes. Many of the C&D ELG requirements are already included in EPA and state construction general permits (CGP) and new requirements will be phased in over the next few years for sites to sample stormwater discharges and comply with a numeric effluent limitation of 280 nephelometric turbidity units (NTU). A sampling requirement will be triggered beginning Aug. 1, 2011, for sites disturbing 20 or more acres at once and beginning Feb. 2, 2014, for sites disturbing 10 acres or more at once.

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Tags: chemical flocculant, effluent limitation, stormwater discharges, effluent limitations guidelines, best management practices

Sydney based road tanker manufacturer and rental business, Water Trucks Direct, have made a decision to standardise on Aussie Quik Prime pumps from Australian Pump Industries ’ product range. The company, operating from a facility at McGraths Hill in Sydney make a complete range of water tankers equipped for both dust suppression and water transport.

“We chose the Aussie pumps high pressure pumps because of their big flow, high pressure performance and overall reliability” said Water Trucks Direct Managing Director, Brenden Bastian. “The 5 year warranty offered by Australian Pump is a tremendous bonus” he said.

Water Trucks use both high volume transfer pumps for fast filling in 3”, 4” and 5” sizes. The big volume pumps are either PTO or hydraulic drive with diesel options being available. Smaller tankers in the 10,000 litre range use Aussie 3” self priming gushers that produce flows of up to 1,500 litres per minute. Genuine Japanese Honda petrol engines, one of the major features offered by Australian Pump and Yanmar diesel drives are both used depending on the application and customer’s requirements.

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Tags: high pressure pumps, yanmar diesel, volume pumps, water distribution system, water tankers

The anticipated $100 million it will cost each year to reduce coal dust on shipments of Wyoming coal out of the Powder River Basin is causing friction between the Burlington Northern Santa Fe Corp. and some public utilities.

BNSF, as well as the Union Pacific Railroad, have spent hundreds of millions of dollars already to reduce coal dust since a 2005 derailment was blamed on coal dust accumulation on the tracks.

But industry officials say additional coal dust suppression measures may be required, costing millions more.

Possible solutions include covering cars, applying a latex coating, or filling cars with less coal.

American Public Power Association estimates whatever method is chosen will add $100 million annually to the cost of shipping coal out of the Powder River Basin.

Tags: union pacific railroad, burlington northern santa fe, powder river basin, burlington northern santa fe corp, burlington northern santa

Suited up with green hard hats, safety vests and protective goggles, five members of the Green Valley Community Coordinating Council’s Environmental Committee headed to Freeport-McMoRan Copper & Gold’s Sierrita operation to see how the mine controls tailings dust.

Chief Environmental Engineer Sherry Burt-Kested, Environmental Manager Chad Fretz and Regional Community Affairs Manager Richard Ducote explained how their impoundment crew works to minimize dust from the mining process.

There is special attention to the 3,500 acres of the mine’s Mill Tailings Impoundment, which is surrounded by about eight miles of berm. Tailings are a by-product of the mining process. The berm refers to residue and rock piled around the edge of the impoundment to help reduce dust.

Fretz said blue-green algae is a native binder for desert soil. First tried on the tailings impoundment in 2003, when added to water in the impoundment area, it helps to minimize dust. He said Freeport McMoRan recycles 30 percent of its water at the mine.

“We anticipate winds, watch the weather, have appropriate staff to tend to tailings and we hear from the ADEQ (Arizona Department of Environmental Quality),” Fretz said.

But even the best plans can face challenges.

Freeport-McMoRan last year paid a $105,000 fine to the state for air-quality violations involving dust coming from the mine in 2006 and 2008.

About 600 homes in Green Valley were affected by the tailings dust in 2006, and an investigation found Freeport-McMoRan had failed to document or act to avoid future problems. The company paid more than $150,000 to help residents clean their homes in 2006.

Today, Freeport-McMoRan staff works around the clock and additional staff will be called to aid the regular impoundment crew of eight when weather conditions forecast problematic winds. Fretz said employees will be pulled off a job to help with dust control as needed. They maintain areas of wet surfaces and look for hot spots of dust within the mine’s 27-square-mile area.

To help spray water faster Freeport McMoRan has purchased Snowcats, large tractor-like vehicles that can spread water 20 feet in each direction.

Burt-Kested said she is constantly looking at new ways to minimize dust.

Along with workers keeping the speed of trucks down to help minimize dust, she touted the expertise of employees who watch for hot spots of dust and work to mitigate it.

More than blue-green algae, Snowcats dispersing water over wide areas and employees keeping an eagle eye out for hot spots, the mine has a Terra-Gator vehicle that disperses seeds so vegetation can grow. It’s another way to reduce dust.

Freeport-McMoRan also has about 100 head of cattle that provide fertilizer to help vegetation grow.

Tags: freeport mcmoran copper gold, mill tailings impoundment, freeport mcmoran copper, air quality violations, freeport mcmoran

Agriculture producers seeking to reduce PM10 (dust) and volatile organic compounds can apply for assistance from the Natural Resources Conservation Service (NRCS).

NRCS has $1.8 million in Arizona along with technical expertise available to farmers and ranchers to improve air quality.

Applications are taken on a continuous basis. Feb. 26 is the deadline to apply for the current funding.

Approved applicants will receive up to 75 percent of the project paid; up to 90 percent if the applicant is from a historically underserved group.

Seven counties are eligible in Arizona, areas identified as non-attainment areas by the Environmental Protection Agency. Farmers and ranchers in Cochise, Gila, Maricopa, Pima, Pinal, Santa Cruz, and Yuma counties are eligible.

Conservation practices included in the program include: anaerobic digesters; feedlot and dairy dust control; tillage and harvest dust control; dirt road dust control; gravel pad track out systems; and grizzly track-out device systems.

Tags: farmers and ranchers, road dust control, volatile organic compounds, natural resources conservation service, underserved group

CW Machine WORX, the manufacturing division of Company Wrench, has introduced a new dust suppression system in the shape of the Dust Destroyer. Built around a 60 kW (80 hp) diesel engine, the Dust Destroyer provides a coverage area of 2,500 m2 (27,000 ft2) to a maximum height of 23 m (75 ft) with 60 degree oscillation. Optional features include a booster pump and chemical odour control.

Tags: booster pump, hp diesel engine, maximum height, dust suppression, suppression system