On May 2017 BioFishency has installed biofiltration units on existing 100 cubic meters concrete fish ponds.
At two different farms located in the Palestinian authority near the city of Jenin. The installation designed for growing Bass and Tilapia, and for irrigating strawberry greenhouses and orchards, with the excess water.
With all of the acronyms in the environmental consulting industry, reading a Phase I Environmental Site Assessment report can be a challenge. And if the report contains the acronym REC, confusion may give way to dread. A Recognized Environmental Condition, or REC, is a term used in a Phase I ESA report to identify a particular, potential environmental impairment on a property. However, finding a REC, HREC or CREC in a report is no reason to panic if you have a grasp of what they mean for your transaction.
AAI:...
Water shortage has encouraged the quest for alternative sources of water for food production and agricultural development. Recycled water (RW) is one of the most available water resources with great potential for use in farm irrigation. This experiment was carried out to investigate the use of RW as the irrigation source and its application method, subsurface leaky irrigation (SLI) system or surface irrigation, in an orchard with young olive trees in central Iran. The results revealed that the SLI system was able...
Affordable Temperature Monitors from CAS
CAS DataLoggers recently supplied the temperature monitoring solution for a customer with a large hoop greenhouse sheltering strawberries and raspberries over the cold autumn. This structure was fashioned from polyethylene and had an elongated shape that made it difficult to heat evenly, resulting in yield shortcomings last season. The berry crop was extremely temperature-sensitive, so the open strawberry flower microclimate had to be carefully maintained at a minimum...
Crop evapotranspiration is the most important parameter for management of irrigation systems in greenhouses. This study was conducted to determine the evapotranspiration of cucumber, tomato and peppers, using micro–lysimeter during seven months in a greenhouse located in central region of Iran. Reference evapotranspiration estimated using drainage lysimeters and the water balance of soil micro–lysimeters was determined using the gravimetric method. To find the relationship between meteorological data and crops...
Spanish fish farmer chooses LIT-UV
Isidro de la Cal is a Spanish group of companies that are active in the fish industry. The company controls the entire process of farming, capturing, processing and finally selling the end product to the stores where consumers buy the various fish products. The fish that is processed by Isidro de la Cal comes from various national, mainly Galician, and international destinations. Currently the company holds a market leader position in the production and commercialization of...
Since 1983, this red tilapia farm has been using AIRE-O2® aerators in its grow-out ponds, which produce millions of pounds of fish per year for the Jamaican market and for export. In a1990 interview, a manager at the farm said, `We have AIRE-O2® aerators here that have been running continuously for eight years.
For maintenance people, its like a dream come true.` He added, ` these AIRE-O2® aerators can move the oxygen-rich water down to the bottom of the ponds. We have found with 2 hp aerators, we...
The first red tilapia farm in Colombia, South America gained government approval as a `high priority project` due to its exportation goals. Since its start-up, production rates have doubled with the addition of AIRE-O2® aerators. Stocking densities increased from 5 to 10 animals per m 2. Dissolved oxygen (D.O.) levels increased from 2-3 ppm to 4.5-5 ppm. Production yields climbed from 30,000 kg/ha/yr to 67,800 kg/ha/yr.
`Thermal stratification, low D.O. levels and poor water mixing in unaerated ponds were...
In 2004, the City of Raleigh Public Utilities Department (CORPUD) initiated a reclaimed water spray irrigation system project to irrigate approximately 130 acres of its existing 1,030-acre farmland used in the past to land apply Class B biosolids. Unlike typical land application or reclaimed water irrigation systems, the primary driver was not to minimize surface water discharge, but rather to maximize crop yield to achieve maximum uptake of applied nutrients and protection of the underlying aquifer. This paper...
ReMaDe Kent and Medway is managing a
series of WRAP (the Waste & Resources
Action Programme) funded trials on top fruit
and other horticultural crops in Kent, the
‘Garden of England’, in order to develop the
market for compost as a soil improver, and in
this trial, as a mulch for young fruit trees.
Twelve farms are taking part in the trials
growing a wide range of crops, including
strawberries, Victoria plums, cherries, Cox
and Braeburn apples, blackcurrants and hops.
The early establishment of the...
The effects of the oil industry and environmental pollutants present in four lakes from Reforma, Chiapas, Mexico, were assessed via ethoxyresorufin O-deethylase activity (EROD), PAH metabolites, and butyrylcholinesterase activity (BChE) in Nile Tilapia, Oreochromis niloticus. Fish were collected during two seasons (the rainy season in September 2000 and the dry season in May 2002) from the lakes Caracol, Rio, Enmedio, and Limon. Fish were sacrificed and EROD activities, hydrocarbons, organochlorine pesticide and...
The success of early surface flow treatment wetlands in Canada was limited by hydraulic blockages and oxygen limitation due to freezing. From 1991 to 1996, Dr. Edgar Lemon, with the Friends of Fort George, researched a sub-surface vertical flow constructed wetland treating lagoon effluent at Niagara-on-the-Lake, funded by the Ontario Ministry of Environment (MOE) and the United States Environmental Protection Agency (EPA). This new approach resulted in effective winter treatment due to the fact that water was...
Abstract DNA damage (Comet assay), lipoperoxidation levels (TBARS), and several biomarkers of oxidative stress such as catalase (CAT), glutathione reductase (GR), glutathione peroxidase (GPx), glutathione S-transferase (GST), and contents of reduced (GSH) and total (TG) glutathione were measured in liver and blood (Comet assay) of tilapia (Oreochromis niloticus) exposed for 7, 15, 30 (subchronic exposure), 60, and 90 days (chronic exposure) to two treatment lagoons of a swine-processing plant, the first an...
Abstract We present a bioenergetics-based approach to analyze the chronic effects and growth toxicity mode of action in tilapia Oreochromis mossambicus exposed to waterborne As and to predict fish growth under different exposure scenarios. 7-day exposure bioassays showed that tilapia accumulate As when exposed to waterborne As. We conducted growth bioassays to assess chronic As toxicity to tilapia. We incorporated a universal ontogenetic growth model with the DEBtox theory to explore the mode of action of As...
From California to New Jersey, environmentalists and politicians are rounding on emissions trading programmes. David Biello reports
Even as the Bush administration continues to build support for market mechanisms to solve air pollution issues – under his Clear Skies initiative – emissions trading schemes from California to New Jersey are under attack from environmentalists, citizen advocacy groups and state governments.
In New York State, Governor George Pataki is continuing a legal battle over the trading of...
A new report released by the Pacific Institute and the California Green Scissors project makes the case for changing the way pesticides are regulated in California. According to the report, if California significantly increased its funding for sustainable agriculture -- instead of just spending money to regulate pesticide usage -- we could aid California farmers, improve the public health and save millions of dollars in associated costs.
Executive Summary
Pesticide regulation in California is at a crossroads....
Incineration has clear environmental advantages over direct landfilling since it reduces the risk of pollution of water resources and prevents greenhouse gas emissions. If incinerators are equipped with metals recovery stages, they can be used as recycling processes for mineral materials and metals. Such separating incinerators may become competitive with separate collection schemes for metal recycling.
Biofilters are the odor control system of choice at composting facilities. Despite similar capital costs, the biofilters are generally less costly to operate than chemical scrubbers. The key to keeping operating costs in check, however, is to get the maximum use out of the biofilter media, thus avoiding the time and money needed to do media replacements.
Allen Boyette, senior engineer and manager of the Cary, North Carolina office of E&A Environmental Consultants, Inc., tackled the topic, “Building Longevity...
Most visitors to Fiji come for rest and relaxation on the white sand beaches or for diving and snorkeling among the unspoiled coral reefs. Few visitors realize that this tropical island in the South Pacific, north of New Zealand, is on the cutting edge of industrial ecology with a fully functional, zero waste program located near the Fijian capital of Suva. As part of an EPA funded review of international ecoindustrial parks, I conducted a field inspection of the Montfort Boys Town Integrated Biosystem (IBS) last...
Abstract
Restriction of available water observed in the last years in arid or semiarid areas forces the planners to consider any source of water for irrigation. The purpose of this paper was to investigate the suitability of wastewater produced by the treatment plant of the city of Larissa, Central Greece for irrigation of corn. With a three year`s field experiment it was shown that wastewater significantly increased corn yield and may substitute considerable quantities of mineral fertilizers. Increase in corn...
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