The disclosure relates to a filtration system for harvesting microalgae. The filtration system includes a filter housing with modular filtration units each containing a fungal filter. The fungal filter includes a perforated support with a capture fungus on the support. The fungal filter is adapted to be removed and replaced from the modular filtration unit, for example during operation of the filtration system. The capture fungus is adapted to capture one or more types of microalgae upon contact of the capture fungus with the microalgae, for example via fungal mycelium. During use of the filtration system to treat an influent stream containing microalgae, microalgae are captured and coated on the fungal filters. The coated fungal filters can be easily removed and the microalgae is harvested directly from the perforated support. New replacement filters can be inserted into the filtration system for continuous operation.

The present invention provides a new energy-driven in-situ plankton collecting device, comprising a solar photovoltaic cell and wind power generation system, a buoyancy support system, a power supply and control system, a plankton suction and collection system, and an anchoring system. The device has the center of gravity on the lower part and vertically floats in water like a tumbler. The plankton suction and collection system is composed of a suction axial-flow pump and a collecting cod end. The bag-shaped plankton collecting cod end has the mesh aperture of less than 0.8 time the average body length of the target plankton, and can be used on both sides. The devices provided by the present invention can be used simultaneously and arranged in an array for collection and utilization of plankton as well as governance and remediation of water area environment, and thus have a favorable application prospect.

The present invention relates to a method for protecting the ecology of a coastal mudflat and a system used in the method. The method includes the following steps: plan and design a pond project according to the specific conditions of the target coastal mudflat to be protected; dig a trench and build a dike in the surface of the target coastal mudflat and enclose the dike to form at least one pond, wherein the trench in the pond is adjacent to the surface of the mudflat to form the pond with a large water surface, a shallow water layer and a seasonal open waterfront; and cultivate an aquatic product in the trench, with or without an emergent aquatic plant planted in the surface of the mudflat.

A system for aquatic plant processing includes a harvester, which includes a nozzle assembly and optionally a pump assembly; and a transport subsystem. Additionally or alternatively, the system can include and/or interface with any or all of: a conduit, a collection assembly, a control subsystem, a sensor subsystem, a pond, and/or any other suitable components. A method for harvesting includes operating the harvesting system in a set of one or more operation modes.

A system for aquatic plant processing includes a harvester, which includes a nozzle assembly and optionally a pump assembly; and a transport subsystem. Additionally or alternatively, the system can include and/or interface with any or all of: a conduit, a collection assembly, a control subsystem, a sensor subsystem, a pond, and/or any other suitable components. A method for harvesting includes operating the harvesting system in a set of one or more operation modes.

A method of using algae to remove a contaminant or pollutant from a first fluid is provided. The method can include providing a growing apparatus having a first reservoir containing the first fluid and a second reservoir containing a second fluid, and growing the algae using the growing apparatus. The method can further include exposing the algae to the first fluid within the first reservoir where the algae uptakes the contaminant or pollutant from the first fluid, and exposing the algae via a belt to the second fluid in the second reservoir where the algae is stimulated to release the contaminant or pollutant.

A method of using algae to remove a contaminant or pollutant from a first fluid is provided. The method can include providing a growing apparatus having a first reservoir containing the first fluid and a second reservoir containing a second fluid, and growing the algae using the growing apparatus. The method can further include exposing the algae to the first fluid within the first reservoir where the algae uptakes the contaminant or pollutant from the first fluid, and exposing the algae via a belt to the second fluid in the second reservoir where the algae is stimulated to release the contaminant or pollutant.

The present invention provides a rake system for removing floating and submerged vegetation and debris from ponds. The rake system includes: a handle; a frame that includes a first cutting member, a second cutting member, one or more entrapment meshes, a floating member; and a line connected the proximal end of the handle. Methods for removing floating and submerged vegetation and debris from ponds are also disclosed.

The present invention provides a rake system for removing floating and submerged vegetation and debris from ponds. The rake system includes: a handle; a frame that includes a first cutting member, a second cutting member, one or more entrapment meshes, a floating member; and a line connected the proximal end of the handle. Methods for removing floating and submerged vegetation and debris from ponds are also disclosed.

A harvesting system for harvesting aquatic plants in or floating on a culture medium a harvesting bed configured to be circulated in and out of the culture medium. An actuator circulates the harvesting bed, a scraper positioned against a surface of the harvesting bed scraps the aquatic plants on the harvesting bed and a channel transports the aquatic plants removed by the scraper toward a collection vat. The collection vat receives the aquatic plants transported via the channel.