A system that uses physical phenomena or chemical reactions or both of them.
| Screen | Equipment that is normally installed at the inlet of a water treatment system and removes solid matter in the influent water. |
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| Sedimentation Separation Unit | A unit that precipitates and separates solid matter in the water by utilizing gravity. |
| Flotation Unit | A unit that separates suspended solids in the water by flotation, utilizing the difference of density between separated matter and water. |
| Filtration Unit | A unit that filters and separates suspended solids in the water by filter media packed in the unit. |
| Activated Carbon Adsorption Unit | A unit that removes organic soluble substances by the adsorption of activated carbon media packed in the unit. |
| Membrane Separation Unit | A unit that filters water using membranes with small pores by pressure differences, and that produces clear filtrate. |
| Ion Exchange Unit | A unit that removes unnecessary ions from the wastewater by the reaction of ion exchanger media packed in the unit. |
| Catalytic Denitrification Unit | A unit that removes ammonia content in the wastewater by oxidizing ammonia to nitrogen with the use of catalysts. |
| Sludge Thickening and Dewatering Unit | A unit that reduces the volume of sludge by thickening and dewatering treatment. |
| Others | Other types of physicochemical treatment units. |
A system that utilizes aerobic microorganisms, which need oxygen, to decompose soluble organic substances in the water.
| Standard Activated Sludge Process | A system that decomposes and processes organic matter by mixing wastewater and sludge containing aerobic microorganisms, and aerating them. |
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| Membrane Bioreactor | An activated sludge process that has membrane units in the aeration tank to separate sludge from water. |
| Suspension Carrier Activated Sludge Process | A process that keeps suspended carriers in the activated sludge reaction tank to promote microorganism growth and to improve biological treatment efficiency. |
| Stationary Carrier Activated Sludge Process | A process that installs fixed biomass carriers in the activated sludge reaction tank to promote microorganism growth and to improve biological treatment efficiency. |
| Contact Oxidation Process | A process that immerses contact material in the activated sludge reaction tank to promote microorganism growth and to improve biological treatment efficiency. |
| Trickling Filter Process | A process where influent wastewater is sprayed over filter media, and organic substances in the water are decomposed by microorganisms growing on the surface of the media. |
| Biological Nitrification and Denitrification Process | A process that removes nitrogen content by oxidizing ammonia in the influent water to nitric acid using aerobic microorganisms, and then decomposing to free nitrogen by anaerobic microorganisms. |
| Others | Other aerobic biological treatment systems. |
A system that anaerobically decomposes organic components in the wastewater to carbon dioxide and methane gas. The generated methane gas is utilized as fuel.
| Upflow Anaerobic Sludge Blanket Process | A process where influent wastewater is introduced at the bottom of the reactor and flows upward in the reactor while contacting granules of anaerobic microorganisms. Organic contents are anaerobically decomposed by the microorganisms to carbon dioxide and methane gas. |
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| Expanded Granular Sludge Bed Process | A process that has taller reactors than the conventional UASB reactors and higher rising speed of the gas and liquid in the reactor. The process can treat with higher COD loadings. |
| Conventional Anaerobic Treatment Process | A process that treats influent wastewater using methane fermentation by fully mixing with suspended anaerobic microorganisms in the reactor. |
| Fixed Bed Anaerobic Treatment Process | A process that has fixed media for microorganisms in the reactor, and that treats influent wastewater by methane fermentation using anaerobic microorganisms attached to the surfaces of the media. |
| Membrane Separation Anaerobic Treatment Process | A methane fermentation process that uses membrane filtration to separate sludge and water from fermented liquor. |
| Dry Methane Fermentation Process | A process where organic sludge with dry solid contents between 15% and 40% is methane fermented. |
| Auxiliary Units for Anaerobic Treatment | Auxiliary units that are attached to anaerobic fermentation systems, i.e. reactor heating units, desulfurization units, gas combustion units, etc. |
| Other Anaerobic Biological Treatment Systems | Other anaerobic biological treatment systems. |
| Sludge Volume Reduction System | A system that controls generated sludge volume through biological treatment, or that reduces the volume of generated sludge with chemical or physical methods. |
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| Others | Other industrial wastewater treatment systems. |
Water treatment equipment for sewage treatment systems.
| Grit Chamber Equipment | A kind of equipment that is installed and used in the grit chamber to settle and separate grit. |
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| Sedimentation Tank Equipment | A kind of equipment that is installed and used in a sedimentation tank to separate suspended solid matter by gravity sedimentation. |
| Biological Reaction Tank Equipment | A kind of equipment that is installed and used in a biological reactor to aerobically decompose organic content with microorganisms. |
| Disinfection Equipment | A kind of equipment that is used to disinfect effluent water from treatment systems before it flows into public waterways. |
| Advanced Treatment System | A system that removes nitrogen, phosphorus content, etc. that could not removed by biological treatment processes. |
| Membrane Activated Sludge Process | An activated sludge process that employs membrane units for solid-liquid separation. |
A system that treats sludge from water treatment of the sewage works.
| Sludge Thickening Equipment | A kind of equipment that is installed in a sludge thickener and used to treat sludge from water treatment. |
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| Sludge Digestion Equipment | A kind of equipment that is installed in a digester and used to anaerobically digest generated sludge from water treatment. |
| Sludge Dewatering System | A system that dewaters thickened sludge. |
| Sludge Incinerating System | A system that incinerates thickened or dewatered sludge to reduce its volume. |
| Sludge Melting System | A system that melts incinerator ash to reduce its volume. |
| Sludge Drying Equipment (Direct/Indirect) | A kind of equipment that is used to dry thickened or dewatered sludge. |
| Sludge Drying to Fuel System | A system that dries thickened or dewatered sludge to produce solid fuel. |
| Sludge Carbonization System | A system that carbonizes dry sludge to produce solid fuel. |
| Sludge Storage System | A system that stockpiles dried sludge or sludge-derived fuel. |
| Deodorizing Equipment | A kind of equipment that treats odor generated through the course of sludge treatment. |
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| Power Generation System | A system that generates electric power by the use of digestion gas or dried sludge. |
| Pipeline | Sewage pipeworks and their connections and monitoring. |
| Phosphorus Recovery System | A system that recovers phosphorus content by crystallizing it using the processes of HAP, MAP, etc. |
A system that treats night soil collected from an area where there is no sewage system or community plant.
A system that receives and treats wastewater from households where a sewage system does not exist.
A system that collects and treats wastewater at a centralized unit for small commercial applications such as farms and fishing villages.
| Bilge Water Treatment Equipment | A kind of equipment that is installed on a ship and treats bilge water discharged from the bottom of the ship. |
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| Ballast Water Treatment System | A system that treats ballast water, which is stored at the bottom of a ship to keep its stability, and at the time of the water discharge, it is treated to a suitable level to allow discharge. |
| Oily Wastewater Treatment Equipment | A system that treats oil from oily wastewater. |
| Others | Other marine pollution control equipment and system. |
A system that treats leachate from landfill sites, etc.