4results about How to "Increase bioconcentration" patented technology

The invention provides a circulating biological filter based on packaged nitrifying bacteria and an operation method thereof.The circulating biological filter comprises a conical bottom area V1, a cylindrical reaction area V2 and a three-phase separation area V3, the bottom of the three-phase separation area V3 is communicated with the cylindrical reaction area V2, the bottom of the cylindrical reaction area V2 is communicated with the conical bottom area V1, and the conical bottom area V1 is communicated with the cylindrical reaction area V2. The three-phase separation area V3 is formed by a conical bottom inner cavity, the cylindrical reaction area V2 is formed by a reaction area inner cavity, and the conical bottom area V1 is formed by an overflow weir inner cavity. By optimizing the proportion of each part of the biological filter of the three-phase biological fluidized bed, the height-diameter ratio is reduced; and the flow guide cylinder and the flow guide cover are arranged, and air is utilized for pushing, so that an aerobic environment required by nitrifying bacteria can be ensured, the filler can be fully fluidized, the mass transfer effect is enhanced, and a good treatment effect on ammonia nitrogen pollutants in aquaculture tail water is achieved.

This utility model relates to a combined integrated wastewater deep treatment equipment, comprising: an anaerobic tank, effluent from the anaerobic tank being connected to an anoxic tank, effluent from the anoxic tank being connected to an aerobic tank, a suspended sedimentation separation structure within the aerobic tank, an aeration device below the sedimentation separation structure within the aerobic tank, supernatant from the sedimentation separation structure being connected to a vertical flow sedimentation tank, supernatant from the vertical flow sedimentation tank being connected to a gradient filtration device, and effluent from the gradient filtration device being connected to a clear water tank. The beneficial effects are: the proportion and sequence of anaerobic, anoxic, and aerobic processes can be adjusted according to different usage scenarios; the process is arranged in the order of anaerobic, anoxic, and aerobic, mainly for simultaneous nitrogen and phosphorus removal; the biological treatment zone consists of anaerobic + anoxic + aerobic; and the sedimentation zone and gradient filtration are connected in series at the end of the biological treatment zone, highly integrating biological and deep treatment processes, resulting in equipment with high treatment efficiency, high flexibility, strong adaptability, low operation and maintenance difficulty, and low operating energy consumption.

The present invention discloses a system for collecting, purifying and reusing rainwater at a dock, and relates to the technical field of collecting and reusing initial rainwater at a dock. The system consists of a vortex sand settling rainwater well, a rainwater garden and a recycling unit; the vortex sand settling rainwater well consists of a rainwater well body, a water inlet pipe, a sponge concrete water delivery channel and an overflow pipe; the sponge concrete water delivery channel is built with sponge concrete; the rainwater garden consists of a planting layer, a medium layer and a drainage layer from top to bottom; multi-layer immobilized small balls of composite bacteria are evenly distributed inside the medium layer; the recycling unit consists of an underground water collection tank and a recycling pump. The rainwater purified by the rainwater garden is collected by the underground water collection tank, and transported to dock water points such as yard water points, road water points, green belt water points and living area water points through the recycling pump. The present invention can effectively collect rainwater on the bulk cargo dock surface, increase the infiltration rate of rainwater, reduce the rainwater runoff, and improve the rainwater quality. It can be directly used as water for flushing the dock surface, reducing rainwater runoff pollution and saving water resources. It has the advantages of simple and compact structure, low operating cost, easy control, high rainwater reuse rate, and environmental friendliness.

The present invention relates to the field of sewage treatment, and provides a continuous flow sewage treatment system of aerobic granular sludge and a method for using the system, including a biochemical treatment area and a horizontal flow sedimentation area, wherein an anaerobic tank, an anoxic tank and an aerobic tank are provided in the biochemical treatment area, and a horizontal flow partition sedimentation tank is provided in the horizontal flow sedimentation area, and the aerobic granular sludge in the horizontal flow partition sedimentation tank is returned to the anaerobic tank through a sludge return pipe, the anoxic tank is connected to the aerobic tank through a flow hole, the aerobic tank is connected to the horizontal flow partition sedimentation tank through a channel, the bottom wall of the aerobic tank is provided with an aeration system, the horizontal flow partition sedimentation tank is provided with a residual sludge channel, a horizontal flow sedimentation tank water distribution channel and a horizontal flow sedimentation tank outlet channel, and an iron-based polyurethane filler is provided in the anaerobic tank. The present invention can effectively increase the biological concentration in the aerobic tank, shorten the residence time, and thus increase the treatment scale, and can gradually screen and effectively separate the aerobic granular sludge, and more efficiently remove organic carbon, nitrogen, phosphorus and other pollutants in the wastewater.