A method of treating stormwater runoff and domestic waste with coal ash
a technology of domestic waste and stormwater runoff, which is applied in the field of wastewater treatment, can solve the problems of inefficient construction and maintenance of the types of structures and systems being utilized to deal with phosphorus and nitrogen in stormwater runoff, the danger of discharging wastewater with significant concentrations and the inability to meet the requirements of phosphorus and nitrogen concentrations,
Inactive Publication Date: 2007-12-27
JOYNER BOBBY L +1
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Benefits of technology
The present invention is about a system and method for removing pollutants from stormwater runoff. The method involves using processed ashes, which are made from burning coal or other materials, to remove pollutants from the runoff. The ashes have a high carbon content, which helps to remove the pollutants. The invention also includes a method of treating domestic waste by using ash to treat the wastewater before it is discharged into a drain field. The wastewater is directed through a septic tank and then through an aerobic and anaerobic bacteria filter media before being directed through ash. The wastewater is then discharged in a drain field. The technical effects of the invention are improved water quality and reduced pollution in the environment.
Problems solved by technology
Government discharge regulations have long recognized the dangers of discharging wastewater with significant concentrations of phosphorus and nitrogen.
However, the dangers associated with nitrogen and phosphorus concentrations in wastewater are not confined to conventional wastewater treatment processes conducted by wastewater treatment plants.
However, for the most part the types of structures and systems being utilized to deal with phosphorus and nitrogen in stormwater runoff have been inefficient and expensive to build and maintain.
Many such systems and processes only remove approximately 25% to 50% of the nitrogen and phosphorus in the stormwater runoff.
Method used
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[0011]The present invention relates to utilizing ash to treat wastewater. In particular, the method and process of the present invention relates to treating stormwater runoff or domestic wastewater. In either case an ash filtering material is utilized to remove such pollutants as nitrogen, phosphorus, BOD and COD from the wastewater being treated.
[0012]Turning to FIGS. 1 and 2, shown therein is a system and process for treating stormwater runoff. Stormwater runoff is first directed to a sand removing device indicated generally by the numeral 10. As illustrated in FIG. 1, sand removing device 10 includes an inlet 12 for receiving the stormwater runoff. Disposed adjacent inlet 12 is a grate 14 that overlies a sand chamber 16. Sand chamber 16 includes a bottom 16B and a surrounding wall structure 16A. In conventional fashion, sand removing device 10 may include an additional inlet in the form of a pipe 18 that is directed to one sidewall 16A. Extending from sidewall 16A is an outlet pi...
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Abstract
A method of treating wastewater, and more particularly stormwater runoff or domestic waste, wherein the wastewater is directed through a high carbon ash particulate. Contaminants such as phosphorus, nitrogen, BOD and COD can be removed. In addition, treatment of the stormwater runoff or domestic waste with ash will raise the pH of the wastewater, generally to above 10, killing bacteria contained in the wastewater.
Description
FIELD OF THE INVENTION[0001]The present invention relates to wastewater treatment, and more particularly to treating stormwater runoff and domestic waste with a high carbon particulate composition such as coal ash.BACKGROUND OF THE INVENTION[0002]Government discharge regulations have long recognized the dangers of discharging wastewater with significant concentrations of phosphorus and nitrogen. Most states have stringent requirements mandating that phosphorus and nitrogen concentrations in effluents discharged from wastewater treatment plants be extremely low. These regulations, of course, apply to municipal, county and regional wastewater treatment plants. However, the dangers associated with nitrogen and phosphorus concentrations in wastewater are not confined to conventional wastewater treatment processes conducted by wastewater treatment plants. Stormwater runoff contains a significant amount of phosphorus, nitrogen, and other pollutants. Many states and government entities are...
Claims
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IPC IPC(8): C02F1/28
CPCC02F1/283E03F5/18C02F2103/001C02F1/66Y10S210/903Y10S210/906
Inventor JOYNER, BOBBY L.WALDROP, ROBERT J.
Owner JOYNER BOBBY L