3 Point Scrapers is designed and constructed for durability and longevity. A standard grader blade is used for quick sourcing and replacements. These are used for attachment to a standard three-point hitch at the rear of a farm tractor or the like. Optional equipment includes a roller back frame and manual or hydraulic rippers.

3D Visualization is computing resource intensive task. 3D visualization models have a variety of applications in geography and urban studies such as site location analysis, emergency facilities planning, design review and marketing. 3D visualization techniques are commonly employed in radiation treatment planning.

Absorbent pads are easy to use, and ideal for soaking up large and small spills. These pads are available in a wide variety of styles, sizes, and configurations. These are also suitable for large spills or concentrated machine leaks. These pads can be used for all types of spills.

Acid storage cabinets provide the ideal storage solution for wet processing acids and other chemistries. It safely stores acids and other corrosive liquids. These cabinets are made of many different materials such as epoxy-coated steel, wood, and polyethylene. These rugged steel cabinets are coated with epoxy powder on all interior and exterior surfaces, including shelves.

Acoustic Horn is used in horn-loaded loudspeakers, signaling horns such as those used on cars, trucks, trains, boats and bicycles. It has one moving part, the titanium diaphragm. It produces vibrations at relatively low frequencies in order to remove soot and other buildups of particulates from chimneys, catalyst beds, or other process vessels. It works in the infrasonic or near-infrasonic frequency range that is used mainly with boilers and selective catalytic reduction (SCR) reactors. It includes fundamental frequency, output power level and materials of construction, weight, length, air consumption and shape. It also uses compression drivers, transducers that provide relatively high pressure and low displacement. They are designed to provide smoothness of frequency response, smoothness of power response, tonal balance, low distortion, high efficiency and time alignment.

Activated carbon filters work by absorbing contaminants onto the surface of carbon particles. They can improve the taste and odor of water by removing certain industrial wastes, pesticides, decaying organic material, dissolved gases, residual chlorine and by-products of chlorination. Activated carbon effectively removes many chemicals and gases, and in some cases it can be effective against microorganisms. However, generally it will affect total dissolved solids, hardness, or heavy metals. Activated carbon is created from a variety of carbon-based materials in a high-temperature process that creates a matrix of millions of microscopic pores and crevices. It is used to remove certain microorganisms and certain organic chemicals, especially pesticides, THMs, trichloroethylene and PCBs.

Activated Sludge is a process dealing with the treatment of sewage and industrial wastewaters. Atmospheric air or pure oxygen is bubbled through primary treated sewage combined with organisms to develop a biological floc, which reduces the organic content of the sewage. The combination of raw sewage and biological mass is commonly known as mixed liquor. This is the active biological material produced by activated sludge plants and which affects all the purification processes.

Aeration is a process in which stagnant or less oxygen content air is replaced by fresh air with sufficient oxygen content. It takes place due to atmospheric temperature, pressure and open structure. Hence artificial aeration becomes necessary. In this case, oxygen is dispersed by a pipe aeration system anchored at the bottom of the water. Aeration is used in nitrification/denitrification process in sewage treatment. It decreases the BOD (Biological Oxygen Demand) level in sewage. Unfortunately an escape of pure oxygen to the surface of water cannot always be avoidable. For this reason aeration plants situated near public waters such as lakes, ponds is dangerous to watercraft, people participating in water sports, anglers and even to people walking near water.

Mechanical aeration systems use surface or subsurface mechanical stirring mechanisms to create turbulence to mix air with the water. There are several types of aeration systems used for wastewater treatment applications that include mechanical aeration systems and diffused aeration systems. These systems effectively remove volatile organic compounds but are generally used for wastewater treatment systems. The diffused aeration system bubbles air through a contact chamber for aeration; the diffuser is usually located near the bottom of the chamber. The air introduced through the diffuser, usually under pressure, produces fine bubbles that inpart water-air mixing turbulence as they rise through the chamber. Diffused aeration systems are designed to serve either point-of-use or plant situations.

Aerial Triangulation is the process of collecting intersecting points of the same feature on different images and placing points of known coordinates in order to establish the position & orientation of the images at the moment of the camera exposure. Aerial Triangulation is a complex mathematical process that allows the formation of a photogrammetric block of stereomodels. This process allows the detection of faulty control points prior to data collection. The purpose of triangulation is to supplement the ground surveyed points with additional control points that are used to strengthen the solution.

Aerobic Waste Water Treatment uses natural processes that require oxygen. The bacteria that thrive in oxygen-rich environments work to break down and digest the wastewater inside the aerobic treatment unit. It treats the wastewater in stages. The wastewater receives pretreatment before it enters the aerobic unit. This will provide a higher level of treatment than a septic tank. It helps to protect valuable water resources where septic systems are failing. They provides an alternative for sites not suited for septic systems. The treated wastewater leaving the unit requires additional treatment before being returned to the environment.