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NZ784349B2 - Low cost and sanitary efficient system and method that creates two different treatment zones in large water bodies to facilitate direct contact recreational activities - Google Patents
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NZ784349B2 - Low cost and sanitary efficient system and method that creates two different treatment zones in large water bodies to facilitate direct contact recreational activities - Google Patents

Low cost and sanitary efficient system and method that creates two different treatment zones in large water bodies to facilitate direct contact recreational activities Download PDF

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Publication number
NZ784349B2
NZ784349B2 NZ784349A NZ78434920A NZ784349B2 NZ 784349 B2 NZ784349 B2 NZ 784349B2 NZ 784349 A NZ784349 A NZ 784349A NZ 78434920 A NZ78434920 A NZ 78434920A NZ 784349 B2 NZ784349 B2 NZ 784349B2
Authority
NZ
New Zealand
Prior art keywords
zone
dissipation
water
sedimentation
water body
Prior art date
Application number
NZ784349A
Other versions
NZ784349A (en
Inventor
Fernando Benjamin Fischmann
Original Assignee
Crystal Lagoons Technologies Inc
Filing date
Publication date
Priority claimed from US16/456,762 external-priority patent/US11453603B2/en
Application filed by Crystal Lagoons Technologies Inc filed Critical Crystal Lagoons Technologies Inc
Publication of NZ784349A publication Critical patent/NZ784349A/en
Publication of NZ784349B2 publication Critical patent/NZ784349B2/en

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
    • C02F1/004—Processes for the treatment of water whereby the filtration technique is of importance using large scale industrial sized filters
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
    • C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
    • C02F1/56—Macromolecular compounds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C02F1/76—Treatment of water, waste water, or sewage by oxidation with halogens or compounds of halogens
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F2001/007—Processes including a sedimentation step
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/42—Nature of the water, waste water, sewage or sludge to be treated from bathing facilities, e.g. swimming pools
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00—Specific treatment goals
    • C02F2303/04—Disinfection

Abstract

The present invention discloses designating two different treatment zones in a large body of water. The first zone is a sedimentation zone. This zone is used mainly to provide treatment and settling of microorganisms and/or contaminants to inactivate and/or remove them from the water body. In this zone a disinfection method based on a CT index and applying an efficient amount of a flocculant composition may be used. The second zone is a dissipation zone. This zone is where main direct contact recreational water activities are intended to occur. In the dissipation zone a water flow is established that, along with the natural currents produced by winds and/or water temperature differences, generate a water dissipation pattern of the volume of water within the dissipation zone into the sedimentation zone. In addition, continuous disinfection of the water volume in the dissipation zone is preferably provided by maintaining a permanent chlorine residual.

Claims (52)

1. A method for providing a large water body suitable for direct contact recreational purposes, the large water body having a surface of at least 3,000 m2, the method comprising: ? designating a sedimentation zone and a dissipation zone in the large water body, both having different configurations and treatment methods, wherein: ? the sedimentation zone and dissipation zone are located within the same water body, and are not separated by a physical barrier, wherein the ratio between the volume of water contained within the dissipation zone and the volume ned within the sedimentation zone is from 1:2 to 1:40; ? the sedimentation zone has an aesthetic purpose, wherein as a daily average no more than 20% of the total number of bathers within the large water body is present in the ntation zone; ? the dissipation zone is used for direct contact purposes, such as swimming and bathing, and is designed to have a high density of s, wherein as a daily average, at least 80% of the total number of bathers within the large water body is present in the dissipation zone with a maximum y of 1 bather per 2 m2; ? applying a disinfection method based on a CT index into the sedimentation zone water volume, wherein the CT index requires that the sedimentation zone is treated by adding chlorine to achieve a specific concentration “C” of the chlorine during a minimum contact time of “T” in the water volume of the sedimentation zone, and wherein the disinfection method is performed such that the chlorine is applied to the water volume ned in the sedimentation zone to achieve a CT index of at least 42 /L every 72 hours; ? applying an efficient amount of a flocculant composition into the sedimentation zone that aids in the settling of ent microorganisms and/or inants that are present in the sedimentation zone, and wherein water flows and water circulation within the sedimentation zone are maintained to allow proper sedimentation; ? maintaining a permanent chlorine al in the dissipation zone water volume by adding an ent amount of chlorine so that at least a 0.5 mg/L free chlorine level is maintained in the water volume contained within the dissipation zone; ? injecting water to the dissipation zone by means of one or more inlet s that along with the natural currents produced by winds and/or water temperature differences, has the capacity of ting a water dissipation pattern of the volume of water within the dissipation zone into the sedimentation zone, and wherein the dissipation zone is arranged and configured to allow a Contamination Reduction Index (CRI) of up to 30 minutes.
2. Method according to Claim 1, wherein the sedimentation zone and the dissipation zone are delimited by delimitation means.
3. Method according to Claim 2, wherein the delimitation means is selected from the group comprising: a visual delimitation, a flotation line, a delimitation line, overhead flags, buoys, a slope change, different depth and combinations thereof.
4. Method according to Claim 2, wherein the delimitation means is ished by means of a brochure, designations by signage or rules, a handbook, a user guideline and by written and/or verbal ctions.
5. Method ing to Claim 1, wherein the depth of the sedimentation zone is at least 1.8 meters at its deepest point, n an efficient depth for settling of the microorganisms and contaminants is established and disturbance from bathers is minimized.
6. Method ing to Claim 1, wherein the sedimentation zone has a surface of at least 1,500 m2, preferably at least 6,000 m2 and even more preferably of at least 10,000 m2.
7. Method according to Claim 1, wherein the flocculant composition comprises one or more flocculants agents selected from the group including synthetic polymers, quaternary ammonium ic polymers, polycationic polymers, aluminum salts, m oxide, calcium hydroxide and mixtures thereof.
8. Method according to Claim 7, wherein the flocculant agents are selected from the group comprising a cationic or anionic polymeric flocculant and mixtures thereof.
9. Method according to Claim 1, wherein the flocculant ition is added to the sedimentation zone at least once every 7 days at a rate of 0.03 g to 3.0 g per m3 of water volume of the sedimentation zone.
10. Method according to Claim 1, n a periodic cleaning of a bottom surface of the ntation zone is performed.
11. Method according to Claim 10, wherein the bottom surface of the sedimentation zone is cleaned at least once every 7-days period.
12. Method according to Claim 1, wherein the dissipation zone is designed so that it has a depth of up to 1.4 meters at its deepest point.
13. Method according to Claim 1, wherein the dissipation zone is designed so that it has a depth of up to 1.6 meters at its deepest point.
14. Method according to Claim 1, wherein the dissipation zone is designed so that it has a depth of up to 1.8 meters at its t point.
15. Method according to Claim 1, wherein the dissipation zone comprises a downward slope from the periphery to the bottom surface at an angle that results in a slope of up to 15% to achieve a safe entry to the large water body.
16. Method according to Claim 1, wherein the water provided to the dissipation zone through the one or more inlet nozzles is treated with iolet light (UV).
17. Method according to Claim 1, wherein the location, design and configuration of the one or more inlet nozzles can vary to achieve different types of water renewal patterns within the dissipation zone.
18. Method ing to Claim 1, wherein the dissipation zone is arranged and configured to allow a Contamination Reduction Index (CRI) of up to 25 minutes.
19. Method according to Claim 1, wherein the dissipation zone is arranged and configured to allow a Contamination Reduction Index (CRI) of up to 20 minutes.
20. Method according to Claim 1, wherein the dissipation zone is arranged and configured to allow a Contamination Reduction Index (CRI) of up to 15 minutes.
21. Method according to Claim 1, further comprising ng a periodic cleaning of a bottom surface of dissipation zone in order to maintain the bottom surface of such dissipation zone free of particles that may generate an aesthetic, safety, or sanitary impact in the water.
22. Method according to Claim 21, wherein the bottom surface of the dissipation zone is cleaned at least once per every rs period.
23. Method according to Claim 1, wherein the permanent chlorine residual is maintained in the ation zone by the addition of chlorine tablets, by applying diluted chlorine through the one or more inlet nozzles located in the dissipation zone, or by manually adding ne to such zone.
24. Method according to Claim 1, wherein the large water body comprises a ity of separate dissipation zones, preferably located in a periphery of the water body.
25. Method according to Claim 1, wherein the large water body has a volume of up to 50.000 m3 and comprises a lized filtration system that can filter the complete water volume of the water body.
26. Method according to Claim 1, further comprising adding an efficient amount of a ne disinfectant in the sedimentation zone to maintain a permanent free chlorine level in the sedimentation zone, preferably of at least 0.5 mg/L.
27. A system for establishing a large water body le for direct contact recreational purposes, the large water body having a surface of least 3,000 m2, and having a periphery and a , comprising: a) a sedimentation zone located within a portion of the large water body and along a portion of the periphery; b) a system for dosing chemicals along the periphery within the sedimentation zone arranged and configured to apply: i) chlorine in the water volume within the sedimentation zone to achieve a CT index of at least 42 mg*min/L every 72 hours, where C is d as the concentration and T is defined as the m contact time; and ii) a flocculant composition into the sedimentation zone that aids in the settling process of the different microorganisms, parasites, and protozoa that are present in the water body and inactivated by the CT cycle; c) a dissipation zone located within a n of the large water body and along a portion of the periphery; d) one or more inlet nozzles within the dissipation zone arranged and configured to inject water to the dissipation zone to generate a ion pattern of the water volume within the dissipation zone, e) a system for dosing chemicals into the dissipation zone configured to maintain a permanent chlorine residual in the water volume within the dissipation zone water, wherein at least a 0.5 mg/L free chlorine level is ined in the water volume located within the ation zone.
28. The system of claim 27, wherein the sedimentation zone and the dissipation zone are delimited by delimitation means.
29. The system of claim 28, n the delimitation means is selected from the group comprising: a visual delimitation, a flotation line, a delimitation line, overhead flags, buoys, a slope change, a different depth, designations by signage or rules, and combinations thereof.
30. The system of claim 27, wherein the depth of the sedimentation zone is at least 1.8 meters at its t point, whereby an efficient depth for settling of the microorganisms and contaminants is established.
31. The system of claim 27, wherein the sedimentation zone has a surface of at least 1,500 m2, preferably at least 6,000 m2 and even more preferably of at least 10,000 m2.
32. The system of claim 27, wherein the flocculant ition comprises one or more flocculants agents selected from the group including synthetic polymers, quaternary ammonium cationic polymers, tionic polymers, aluminum salts, calcium oxide, calcium hydroxide and mixtures thereof.
33. The system of 32, wherein the flocculant agents are selected from the group comprising a cationic or anionic polymeric flocculant and es thereof.
34. The system of claim 27, wherein the flocculant composition is added to the sedimentation zone at least once every 7 days at a rate of 0.03 g to 3.0 g per m3 of water volume of the sedimentation zone.
35. The system of claim 27, further comprising a bottom surface cleaning device to ically clean the sedimentation zone.
36. The system of claim 35, wherein the bottom surface of the sedimentation zone is cleaned at least once every 7-days period.
37. The system of claim 27, wherein the system for dosing chemicals into the sedimentation zone comprises one or more inlet nozzles.
38. The system of claim 27, wherein the dissipation zone is designed so that it has a depth of up to 1.4 meters at its t point, preferably up to 1.6 meters at its t point and even more preferably of up to 1.8 meters at its deepest point.
39. The system of claim 27, wherein the ation zone comprises a downward slope from the periphery to the bottom surface at an angle that results in a slope of up to 15% to achieve a safe entry to the large water body.
40. The system of claim 27, further comprising an ultraviolet light (UV) ent device, wherein the water provided to the dissipation zone through the one or more inlet nozzles is treated with ultraviolet light (UV).
41. The system of claim 27, wherein the one or more inlet nozzles may be varied in number, direction and water flow to achieve different types of water renewal patterns within the dissipation zone.
42. The system of claim 27, wherein the system for dosing chemicals into the dissipation zone is configured to dose the chemicals through the one or more inlet nozzles within the dissipation zone.
43. The system of claim 27, wherein the ation zone is arranged and configured to allow a Contamination Reduction Index (CRI) of up to 25 minutes.
44. The system of claim 27, wherein the dissipation zone is arranged and configured to allow a Contamination Reduction Index (CRI) of up to 20 minutes.
45. The system of claim 27, wherein the ation zone is ed and configured to allow a Contamination Reduction Index (CRI) of up to 15 s.
46. The system of claim 27, further comprising a bottom surface cleaning device arranged and configured to clean a bottom surface of dissipation zone, whereby the bottom surface of the dissipation zone is ined free of particles that may generate an aesthetic, , or sanitary impact in the water.
47. The system of claim 46, wherein the bottom surface of the dissipation zone is cleaned at least once per every 72-hours period.
48. The system of claim 27, wherein the permanent chlorine residual is maintained in the ation zone by the addition of chlorine tablets, by applying diluted chlorine through the one or more inlet nozzles located in the dissipation zone, or by manually adding chlorine to such zone.
49. The system of claim 27, wherein the one or more inlet nozzles are located throughout the surface of the dissipation zone and preferably along its periphery, center of along the tation means.
50. The system of claim 27, n the large water body includes a plurality of separate dissipation zones, preferably located in the ery of the water body.
51. The system of claim 27, wherein the large water body has a volume of up to 50.000 m3 and comprises a centralized filtration system that can filter the complete water volume of the water body.
52. The system of claim 27, wherein the system for dosing chemicals is configured to apply a chlorine disinfectant into the sedimentation zone in order to maintain a permanent free chlorine level in the sedimentation zone, preferably of at least 0.5 mg/L.
NZ784349A 2020-05-28 Low cost and sanitary efficient system and method that creates two different treatment zones in large water bodies to facilitate direct contact recreational activities NZ784349B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US16/456,762 US11453603B2 (en) 2019-06-28 2019-06-28 Low cost and sanitary efficient method that creates two different treatment zones in large water bodies to facilitate direct contact recreational activities
PCT/US2020/034909 WO2020263488A1 (en) 2019-06-28 2020-05-28 Low cost and sanitary efficient system and method that creates two different treatment zones in large water bodies to facilitate direct contact recreational activities

Publications (2)

Publication Number Publication Date
NZ784349A NZ784349A (en) 2024-10-25
NZ784349B2 true NZ784349B2 (en) 2025-01-28

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