Abstract: The disclosure provides a silica-based scale cleaning technology. The disclosure can provide a cleaning agent of a silica-based scale, containing a silicic acid compound. The disclosure can also provide a cleaning method of a water treatment apparatus, including: using a solution containing a silicic acid compound. Further, the disclosure can provide a cleaning method of a silica-based scale, including: using an agent containing a silicic acid compound for a water system.

Abstract: The disclosure provides a silica-based scale cleaning technology. The disclosure can provide a cleaning agent of a silica-based scale, containing a silicic acid compound. The disclosure can also provide a cleaning method of a water treatment apparatus, including: using a solution containing a silicic acid compound. Further, the disclosure can provide a cleaning method of a silica-based scale, including: using an agent containing a silicic acid compound for a water system.

Abstract: The present invention provides an autonomous submersible device which can locate, intercept, control and/or gather various marine species. The submersible device includes an intelligence module which can detect, develop a plan to intercept or control the detected marine species, as well as capture the marine species. The submersible device may work alone or in combination with other submersible devices. In addition, the submersible device may be towed by a ship or be self-propelled. The submersible device may optionally include a communication system to communicate with a remotely located supervisory control system and/or the user. The submersible device also includes sensor equipment for detecting the marine species. The submersible device is controlled through the utilization of a plurality of moveable control surfaces, ballast tanks, or other control mechanisms commonly used by underwater submersibles.