# US 10,308,536 B1 · Double coil effluent dispersal apparatus and method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,308,536 B1 - Document ID: US10308536B1 - Status: Granted - Kind: B1 - Application number: 15/870,668 - Filed: 2018-01-12 - Granted: 2019-06-04 - Earliest claimed: 2015-02-01 - Applicants: David Mark Lowe; Richard D. Eldredge - Inventors: David Mark Lowe; Richard D. Eldredge - Web page: https://patentgrep.com/patent/US10308536B1 ## CPC - C02F 3/288: {comprising septic tanks combined with a filter} - C02F 1/72: by oxidation {(C02F1/4672 takes precedence)} - C02F 3/04: using trickle filters - C02F 3/046: {Soil filtration} - C02F 3/121: {Multistep treatment} - E02B 11/005: {Drainage conduits} - E03F 11/00: Cesspools (emptying cesspools E03F7/00; features relating to treatment of sewage C02F) - C02F 3/043: {Devices for distributing water over trickle filters} - C02F 2103/002: {Grey water, e.g. from clothes washers, showers or dishwashers} - C02F 2103/005: {Black water originating from toilets} - Y02A 20/208: Off-grid powered water treatment - Y02W 10/10: Biological treatment of water, waste water, or sewage - C02F: TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE (separation in general B01D; special arrangements on waterborne vessels of installations for treating water, waste water or sewage, e.g. for producing fresh water, B63J; adding materials to water to prevent corrosion C23F; treating radioactively-contaminated liquids G21F9/04; regeneration of reactants for recirculation into processes, see the relevant places for the processes) - E02B: HYDRAULIC ENGINEERING (ship-lifting E02C; dredging E02F) - E03F: SEWERS; CESSPOOLS - Y02A: TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE - Y02W: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT ## Abstract The present invention is a wastewater treatment system utilizing a recirculating filter system comprising sand, gravel, or synthetic media. Septic effluent is continuously, or approximately continuously, dosed under pressure to the treatment media through pressure compensating drip irrigation emitters. The dosed effluent is treated and dispersed into a dispersal field using double coiled distribution lines that can alternate flow through emitters to rest the dispersal field. The double coil dispersal lines allow more emitters per unit area allowing treatment of the effluent more slowly and effectively. ## Claims ### Claim 1 A septic dispersal system comprising, a headworks, and a dispersal field wherein, the dispersal field comprises a first double coil dispersal line, wherein the first double coil dispersal line comprises two distribution tubes substantially adjacent extending in a horizontal coil, a second double coil dispersal line adjacent the first double coil dispersal line wherein, one distribution tube from the first double coil dispersal line and one distribution tube from the second double coil dispersal line flow in parallel a second distribution tube from the first double coil dispersal line and a second distribution tube from the second double coil dispersal line flow in parallel a flow in the parallel distribution tubes can be alternated such that one distribution tube in each double coil dispersal line flows at a time. ### Claim 2 (depends on 1) A septic dispersal system of claim 1 further comprising, a first distribution line valve connected to a first distribution tube and a third distribution tube and a second distribution line valve connected to a second distribution tube and a fourth distribution tube, wherein alternating the first and second distribution line valves allow flow in one distribution tube in each double coil dispersal line at a time. ### Claim 3 (depends on 1) A septic dispersal system of claim 1 wherein the dispersal field comprises a treatment media and alternating flow allows a rest period for the treatment media. ### Claim 4 (depends on 1) A septic dispersal system of claim 1 wherein, the first and second double coiled dispersal lines further comprise drip emitters and the alternating flow allows a rest period for the drip emitters. ### Claim 5 (depends on 4) The septic dispersal system of claim 4 wherein, the maximum emitter density allows less flow at each emitter per a dosed volume of effluent. ### Claim 6 (depends on 1) The septic dispersal system of claim 1 further comprising, a plurality of drip emitters, wherein the plurality of emitters are spaced apart at a desired dosing location wherein, the desired dosing location has a maximum emitter density without overlapping wetted areas. ### Claim 7 (depends on 1) The septic dispersal system of claim 1 further comprising a manual headworks wherein operation of the manual headworks is simple and low cost. ### Claim 8 (depends on 1) The septic dispersal system of claim 1 further comprising, a one way valve at the end of the dispersal field configured to allow back flushing the first double coil dispersal line. ### Claim 9 A method of effluent dispersal comprising, controlling effluent flow in a headworks, dispersing effluent into a dispersal field comprising, a first double coil dispersal line, wherein the first double coil dispersal line comprises two distribution tubes substantially adjacent extending in a horizontal coil, dispersing effluent into a dispersal field further comprises a second double coil dispersal line adjacent the first double coil dispersal line wherein, a first distribution tube from the first double coil dispersal line and a first distribution tube from the second double coil dispersal line flow in parallel, a second distribution tube from the first double coil dispersal line and a second distribution tube from the second double coil dispersal line flow in parallel, alternating a flow in the parallel distribution tubes such that one distribution tube in each double coil dispersal line flows at a time. ### Claim 10 (depends on 9) The method of effluent dispersal of claim 9 further comprising, alternating first and second distribution line valves to disperse effluent through one distribution tube in each double coil dispersal line at a time wherein, the first distribution line valve is connected to a first distribution tube and a third distribution tube and the second distribution line valve is connected to a second distribution tube and a fourth distribution tube. ### Claim 11 (depends on 9) The method of effluent dispersal of claim 9 further comprising, alternating the flow in the first double coil dispersal line and the second double coil dispersal line to rest a treatment media and a plurality of emitters. ### Claim 12 (depends on 9) The method of effluent dispersal of claim 9 further comprising, spacing a plurality of drip emitters at a desired dosing location wherein, a desired dosing location has a maximum emitter density without overlapping wetted areas. ### Claim 13 (depends on 9) The method of effluent dispersal of claim 9 further comprising, operating the headworks manually such that operation is simple and low cost. ### Claim 14 (depends on 9) The method of effluent dispersal of claim 9 further comprising, back flushing the dispersal field through a one way valve at the end of the first double coil dispersal line. ### Claim 15 A septic dispersal system comprising, a dispersal field wherein, the dispersal field comprises a first double coil dispersal line, wherein the first double coil dispersal line comprises two distribution tubes substantially adjacent extending in a horizontal coil, a second double coil dispersal line adjacent to and spaced apart from the first double coil dispersal line wherein, one distribution tube from the first double coil dispersal line and one distribution tube from the second double coil dispersal line flow in parallel, a second distribution tube from the first double coil dispersal line and a second distribution tube from the second double coil dispersal line flow in parallel, a flow in the parallel distribution tubes can be alternated such that one distribution tube in each double coil dispersal line flows at a time.