method to control micro algae growth and mitigation of microcystins

Abstract

The invention discloses a method to control micro algae growth and mitigation of microcystins, including the installation of algae control unit, algae control unit including metal drainage pipe and several charging chambers along the metal drainage pipe, one or more pairs of transmitters and receivers are installed in these charging chambers, electromagnetic waves are transmitted through water, the high energy point in these charging chambers are grounded through metal, generating high energy gradient electromagnetic wave in charging chambers, the invention uses repeatable high energy gradient intermittent shock treatment, which can provide more effective treatment for phytoplankton and other organisms, especially in freshwater environment, which can improve the killing effect of phytoplankton, and uses high gradient near-field ionic current to destroy the molecular structure of microcystins, especially benzene ring and OH and NH hydrogen bonds, compared with the existing treatment method, the invention can effectively solve microcystins problem.

Claims

1. A method to control micro algae growth and mitigation of microcystins, comprising the following steps: 1) set up algae control unit (ACU), algae control unit including metal drainage pipe and several charging chambers along the metal drainage pipe, One or more pairs of transmitters and receivers are installed in these charging chambers, Electromagnetic waves are transmitted through water; 2) the high energy point in these charging chambers are grounded through metal, generating high energy gradient electromagnetic wave in charging chamber; 3) the transmitter/receiver voltage difference shall not be less than 24V, Such potential applied across the transmitter/receivers spacing must not be more than 10 cm, the current density between the transmitter/receiver pairs must not be less than 1 amps/sq.Math.m; 4) the water that needs to be treated is introduced into the cyanobacteria controller for processing. The molecular structure of microcystins, especially benzene ring and OH and NH hydrogen bonds, was destroyed by high-gradient near-field ionic current. Vibration of water hydrogen bonds interrupted the flow of electrons/charges in water to further destroy cell metabolic pathways or processes. The high gradient potential near field ion current is used to rapidly crush chlorophyll; 5) using proximity method, Near-field high current density and high voltage gradient method are used to solve the problems of low electrical conductivity and low chloride content; 6) for low conductivity fresh water, intermittent electromagnetic pulse treatment is carried out with less than 1 MHz of pulsating electromagnetic wave. Using intermittent shock treatment to increase the kill efficacy for phytoplankton; 7) the equipment of this invention is mounted on the amphibian vehicle or motorized/non-motorized barge. The vehicle or the barge is then moved to the algae infested hot spot area and station at that affected area for treatment. There may be other treatment arrangement such as mounting the equipment onshore and direction the water to the treatment station onshore before discharging it back into the water. Algae blooms can also be segmented. Algae-infested water can be recycled in a small area of the region for multi-stage or cyclic treatment. All these other arrangements can be varied according to the site requirement and constraint but the main treatment equipment and the principle of treatment concept remains the same.

2. A method to control micro algae growth and mitigation of microcystins of claim 1, is characterized by charging chambers of 1 MHz pulsed electromagnetic wave, comprising non-metallic inner chambers and non-conductive material lining arranged in non-metallic inner chambers.

3. A method to control micro algae growth and mitigation of microcystins of claim 1, is characterized by the voltage difference of 60V between the transmitter and the receiver.

4. A method to control micro algae growth and mitigation of microcystins of claim 1, is characterized by the spacing between the transmitter and receiver is less than 5 mm.

5. A method to control micro algae growth and mitigation of microcystins of claim 1, is characterized by the current density between the transmitter/receiver pairs is more than 10 amp s/sq.Math.m.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0054] Description of FIGURES:

[0055] FIG. 1 is the schematic diagram of the algae control unit in this patent, a method to control micro algae growth and mitigation of microcystins.

[0056] 1. charging chamber 2. Metallic drainage path

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

[0057] In conjunction with FIG. 1:

[0058] a method to control micro algae growth and mitigation of microcystins, include the following steps:

[0059] 1) set up algae control unit (ACU), algae control unit including metal drainage pipe and several charging chambers along the metal drainage pipe, One or more pairs of transmitters and receivers are installed in these charging chambers, Electromagnetic waves are transmitted through water;

[0060] 2) the high energy point in these charging chambers are grounded through metal, generating high energy gradient electromagnetic wave in charging chamber;

[0061] 3) the transmitter/receiver voltage difference shall not be less than 24V, Such potential applied across the transmitter/receivers spacing must not be more than 10 cm, the current density between the transmitter/receiver pairs must not be less than 1 amps/sq.Math.m;

[0062] 4) the water that needs to be treated is introduced into the cyanobacteria controller for processing. The molecular structure of microcystins, especially benzene ring and OH and NH hydrogen bonds, was destroyed by high-gradient near-field ionic current. Vibration of water hydrogen bonds interrupted the flow of electrons/charges in water to further destroy cell metabolic pathways or processes. The high gradient potential near field ion current is used to rapidly crush chlorophyll;

[0063] 5) using proximity method, Near-field high current density and high voltage gradient method are used to solve the problems of low electrical conductivity and low chloride content;

[0064] 6) for low conductivity fresh water, intermittent electromagnetic pulse treatment is carried out with less than 1 MHz of pulsating electromagnetic Wave. Using intermittent shock treatment to increase the kill efficacy for phytoplankton;

[0065] 7) the equipment of this invention is mounted on the amphibian vehicle or motorized/non-motorized barge. The vehicle or the barge is then moved to the algae infested hot spot area and station at that affected area for treatment. There may be other treatment arrangement such as mounting the equipment onshore and direction the water to the treatment station onshore before discharging it back into the water. Algae blooms can also be segmented. Algae-infested water can be recycled in a small area of the region for multi-stage or cyclic treatment. All these other arrangements can be varied according to the site requirement and constraint but the main treatment equipment and the principle of treatment concept remains the same.

[0066] In lab test result after prolonged treatment

TABLE-US-00001 Sample Date: 22 Mar. 2018 Initial Treated Test Parameter Unit Test Method Ave 7 Ave 7 Chlorophyll-a mg/m.sup.3 APHA 10200H 693 1.30 (2) Microcystin ppb Microcystins 33.2 0.15 Tube Kit

[0067] Note:

[0068] 1. APHA is a standard method for Determination of Water and Waste Water (APHA 22.sup.nd Edition, 2012)

[0069] 2. <=Less than. The data reported is less than Detection Limit of the test.

[0070] On site reservoir test also showed that

TABLE-US-00002 Microcystins Microcystin One pass test Untreated (ug/L) Treated (ug/L) Test 1 Open site mesocosm 2.32 0.85 Low concentration Test 2 Open site mesocosm 9.08 5.76 higher concentration

[0071] In tank test

TABLE-US-00003 One pass in tank test Microcystin One Pass Treatment Untreated Water 4.96 Treated Water Discharge 2.02

[0072] The above is the one pass treatment result, and further reduction can be achieved with repeated steps treatment.

[0073] In open field treatment, multi-stage treatment is preferred, or algae blooms are separated and isolated from other large amounts of water. Algae typically live in water up do depth of about 1.5 m from surface, and a separation curtain extending about 2 meters from the surface will be sufficient to isolate algae. The water infested by algae can be recycled or recycled in a small area after partitioning.

[0074] Other treatment methods, such as hot spot treatment, can also be used to install the algae control unit of the invention on an amphibious vehicle or a motor/non-motor barge, and then move the vehicle or barge to the hot spot area and station where algae infects the affected area for treatment.

[0075] The algae control unit in the invention can be installed on the shore and a treatment station can be set up to extract or guide algae-infected water to the treatment station on the shore for treatment and discharge back into the water. The use of the present invention can vary according to specific requirements, but the algae control unit and the treatment principle of the main treatment equipment in the present invention remain unchanged.

[0076] The present invention and its embodiments are described above. This description is not limited, and the actual structure is not limited to it. In a word, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, and without creative design of embodiments similar to the technical scheme, they shall all fall within the scope of protection of the present invention.