A sewage uniform distribution treatment device for an aerobic granular sludge system and a use method therefor, the device comprising a reactor tank body (1), a water inlet device (2), and a water outlet device (3). The water inlet device (2) comprises a water inlet inner channel (4), a water inlet weir (5), a water inlet outer channel (6), a vertical water inlet branch pipe (7), and vertical bell mouths (8); the water outlet device (3) comprises a water outlet main pipe (9), a water outlet channel (10), a water outlet weir (11), an outer baffle plate (12), and an inner baffle plate (13); the water outlet channel is connected to the water outlet main pipe; the outer baffle plate is a vertical baffle plate; the inner baffle plate is located at the bottom of the water outlet channel and is connected to the water outlet channel.

The invention provides structures, methods, and assemblies for bioretention systems, including tree box filters with one or more internal bypass features incorporated into the tree box filter. The invention also provides methods and additional structures that are useful for managing stormwater flow and inhibiting the flow of pollutants, debris, and other contaminants into drainage systems.

A bio-filter system is disclosed. The disclosed bio-filter system comprises: a transfer pipe for collecting and transferring N.sub.2O generated in any one tank from among an anaerobic tank, an anoxic tank, and an aeration tank; a bio-filter unit including a carrier for removing, by means of microbial reaction, the N.sub.2O discharged from the transfer pipe; and a sewage supply member for spraying sewage into the carrier in order to provide nourishment for microorganisms to the carrier. The bio-filter unit comprises: a filter housing; an induction discharge pipe, which is installed on the lower side of the inside of the filter housing, for inducing the N.sub.2O transferred by the transfer pipe in a transverse direction and enabling same to be discharged upwardly through a nozzle; the carrier, which is disposed on the upper side of the induction discharge pipe inside the filter housing, for removing, by means of microbial reaction, the N.sub.2O discharged through the induction discharge pipe; and a sewage spraying member, which is disposed on the top of the carrier inside the filter housing, for spraying sewage supplied from the sewage supply member to the carrier so as to utilize the sewage as nourishment for microorganisms.

A microbiological culture apparatus of a wastewater treatment system includes a cage, a spacing device received in the cage, and a plurality of culture woods vertically received in the cage and positioned by the spacing device. The spacing device restricts the culture woods in an upright status and spaces them from each other to form a passageway between each two of the neighboring culture woods. Wastewater flows through the passageways to have low temperature and high dissolved oxygen.

A wastewater treatment system includes an aeration tank under a plurality of trickling filters to receive wastewater from the trickling filters. A plurality of bacteria culture modules are received in each trickling filters. A plurality of blower devices and air pipes are provided to generate ventilation to cool the wastewater flowing out of the bacteria culture modules. Each of the bacteria culture modules has a cage in which a plurality of culture woods are vertically received. Therefore, a temperature of the wastewater is reduced to form an environment which is good to the bacteria.

A sewage treatment system, includes a solid-liquid separating apparatus having a first filtering medium packed layer packed with a predetermined filtering medium, configured to separate sewage to be treated into solid components and filtered water by passing the sewage through the first filtering medium packed layer upward, and configured to reversely wash the first filtering medium packed layer by passing the filtered water through the first filtering medium packed layer downward at a predetermining timing; and a trickling filter installed on a latter stage of the solid-liquid separating apparatus, having a second filtering medium packed layer packed with a filtering medium attached with microorganisms, and configured to allow the filtered water to fall into the second filtering medium packed layer by trickling the filtered water onto an upper part of the second filtering medium packed layer to flow out treated water acquired by biotreating the filtered water by the microorganisms.

The invention provides structures, methods, and assemblies for bioretention systems, including tree box filters with substantially permeable panels integrated into a bottom portion of the tree box filter. The invention also provides methods and additional structures that are useful for managing stormwater flow and inhibiting the flow of pollutants, debris, and other contaminants into drainage systems.

A liquid flow distribution system comprises a flow chamber and a rotor. The flow chamber has a flow chamber inlet, a flow chamber outlet and a chamber flow path extending from the flow chamber inlet to the flow chamber outlet. The flow chamber path is curved so as to generate a generally vortical flow in liquid passing through the chamber flow path. The rotor has a plurality of rotor blades rotatably mounted about a rotor axis. The rotor is mounted in proximity to the flow chamber outlet and positioned such that a flow of liquid exiting the flow chamber outlet impacts one or more of the rotor blades to rotationally drive the rotor. Rotational driving of the rotor in turn disperses liquid impacting the rotor blades.

The invention concerns a wastewater treatment plant and a method for it. The plant comprising at least one main reactor module (30) having a plurality of stackable filter-modules (50), each filter-module purifying wastewater independently by being individually charged batchwise with wastewater. The wastewater is discharged on each filter-module by means of a deflector (44) referenced to a filter-module (50), the deflector creating a back pressure in dependency of the gravity-flow-force of the wastewater leading to that the wastewater is spilled from the deflector (44) in an angle of discharge relative to a horizontal plane evenly onto every independent filter-module, respectively.

An aquarium water filtering system includes a first filtering section, a second filtering section, and a third filtering section. The first filtering section has a first housing configured to receive water, perform a first filtering action on the received water, and produce a first filtered water. The second filtering section has a second housing placed horizontally adjacent to the first housing and configured to receive first filtered water, perform a second filtering action on the first filtered water, and produce a second filtered water. The third filtering section has a third housing placed horizontally adjacent to the second housing and configured to receive the second filtered water, perform a third filtering action on the second filtered water, and produce a third filtered water for return to the aquarium.