H2s Articles & Analysis: Older
23 articles found
Fish farm sediment issues can be a major headache for people engaged in aquaculture. The accumulation of silt and sediment, a process referred to as siltation or siltification, over time can reduce the volume of a fish pond to the point where fish farming is no longer viable. There are also other negative potential impacts depending on what’s in the sediment that accumulates. If the silt is ...
As the market continues to increase, shrimp pond liners have begun to develop. Shrimp pond liners need an industrialized supply of shrimp feed, fertilization of the pond liner to promote microbial growth, oxygenation, and regular water changes. HDPE Geomembrane liner has been used and played a key role in the construction of shrimp pond liner due to its good environmental stress cracking ...
It is recommended that the indoor trough fermentation of manure is more environmentally friendly for organic fertilizer production. How to produce fertilizer? From manure to organic fertilizer, the price has increased a hundred times, the key is to add fermentation bacteria to do fermentation treatment. Here is a brief introduction to the method of making organic fertilizer from manure and straw. ...
This blog is Part One of our three-part series highlighting livestock ventilation system designs. Livestock farmers understand how important maintaining their animals’ health and comfort is to their bottom line. Livestock ventilation systems contribute to profitability by helping to maintain good air quality not only for their animals but also for those who care for them. Whether animals ...
HDPE fish safe pond liner, also known fish pond liner, is the kind of HDPE geomembrane liner used as the anti seepage lining system to contain water for aquaculture farm. As the demand for the vannamei shrimp market continues to increase, Indonesia’s commercial fish and shrimp ponds have begun to develop rapidly, making Indonesia a major producer of shrimp and fish in the world. ...
This is mainly because microorganisms can decompose non-nitrogen and sulfur-free organic substances such as phenol, carboxylic acid, formaldehyde, etc. into CO2 and H20; ammoniated nitrogen-containing organic substances into NH3, which can be oxidized by nitrosating bacteria to NO2- , And then further oxidized to N03- by nitrifying bacteria; sulfur-containing malodorous substances are decomposed ...
Overview A California vineyard was faced with the challenge of meeting wastewater treatment compliance under a tight deadline denned by local regulators, while receiving ongoing odor complaints from the community. Challenges Extended periods of mismanagement from previous owners left the facility and the wastewater treatment system in disarray. Equipment with poor mixing capabilities and ...
A typical pH-drop leads to a two- to threefold increase in the level of toxic free CO2, initiates the formation of H2S, and increases the toxicity of several metals, including copper (Cu2+). ...
5. Carbon dioxide should be increased after trimmingCarbon dioxide is the material basis for photosynthesis of aquatic plants and protects aquatic plants under strong light. After trimming, on the one hand, the lighting of the water grass is suddenly improved (the lamps have not changed, but the occlusion has been reduced, which is equivalent to increasing the lighting intensity). On the other ...
Photosynthesis is undoubtedly one of the most important physiological processes on Earth. It is the process by which plants, algae, and bacteria produce food. Photosynthesis makes these organisms the primary producers of the earth, as all other organisms feed on them for their energy source. People depend on this important process for most of their needs: food, fiber, fuel, timber, etc. Also, ...
Woodchip bioreactors and the Tailwater Nitrate Removal System rely on bacteria to reduce nitrate (NO3) to nitrogen gas and carbon dioxide. Both systems use a support for the bacteria. The denitrifying bactera generate a biofilm that coats the supports and immobilizes the bacteria. As water passes by and around the supports, the nitrate molecule diffuses through the biofilm and enters into ...
Application Waste water from cassava Equipment AEMS Location Vietnam Customer Solvay Requirement An AEMS fixed biogas analyser was needed to monitor CH4, CO2, O2 and H2S gas levels produced by a covered lagoon for waste water from cassava processing. ...
Are you getting a scale build up in your recirculation system from your manure holding ponds (lagoons)? Is it calcium carbonate or struvite (magnesium-ammonia-phosphate) crystals? In some CAFO sites, they will use anaerobic lagoons to reduce the amount of manure that they need to treat. In a zero oxygen environment the anaerobic bacteria will take the manure which is loaded with nutrients and ...
In 2009, the Board of Waste Management for the Mauricie region of Quebec, Canada (RGMRM) found a biogas purification solution through an Eco-Tec Inc. system known as BgPur, which uses a patented, high efficiency gas-liquid contacting process, allowing H2S to be absorbed and the gas purified for reuse in power generation, cogeneration and heating applications. ...
Results By supplementing the BioAmp units with these 3, we manage to significantly decrease BOD, COD, FOG and H2S , so that after 7 months since we installed the first BioAmp these values are below the legal approved values. ...
The contraption looks a bit like a sophisticated high school science project as it rocks back and forth, with steam escaping and a slight rumble reverberating in the large room. The Munchinator is at work. A team of representatives from Carson City-based Ecologico Logic Inc. brought a prototype of their machine from their Southern California offices to South Tahoe Refuse this week to demonstrate ...
Heritability based on means over environments was h2 = 0.86 for infestation and h2 = 0.75 for cutting. Percent infestation was negatively correlated with heading date (r = –0.57, P < 0.001) and degree of stem solidness (r = –0.31, P < 0.01). ...
Heritabilities for coleoptile length were high (h2 > 0.82). Interval mapping identified six significant quantitative trait loci (QTL) on 1B, 3D, 4DS, 4DL, 5AS, and 5B for coleoptile length; four of them, on 3D, 4DS, 4DL, and 5AS, showed pleiotropic effects on plant height. ...
When used in conjunction with a previously published PCR-based assay diagnostic for alleles at VRN-H2, it was possible to predict growth habit in all the 100 contemporary UK spring and winter lines analyzed in this study. ...
The aims of this study were to estimate the heritabilities (h2) of drought resistance traits and the genotypic (rG) and phenotypic (rP) correlations between drought resistance traits and agronomic traits, and to examine the relationships between drought resistance traits under stressed and nonstressed conditions. ...