Disclosed are an intelligent separation and drying system for maggots and a method of operating the same. The intelligent separation and drying system includes an intelligent light control unit, an intelligent scraping unit, a separation unit, a drying unit, a travelling unit and a central control unit. The central control unit is connected to other units through signals. Multidisciplinary techniques, including spectrum analysis, machine learning algorithm and artificial neural network, are combined to automatically, systematically, intelligently and continuously separate maggots and maggot feed as well as dry the maggots with high efficiency in a clean manner.

Disclosed is a pond culture circulation system based on a bio-toilet module including a culture pond and an annular treatment channel surrounding the culture pond. The annular treatment channel is sequentially provided with a sedimentation zone, a biological purification zone and a water storage zone along a direction of water flow. The culture pond includes a plurality of culture pond units. Each of the plurality of culture pond units is provided with a bio-toilet module in communication with the sedimentation zone through a sewage pipe. The water storage zone communicates with each of the plurality of culture pond units through a gravity-flow culvert. The invention further discloses a use method of the pond culture circulation system based on the bio-toilet module.

A process for constructing a soil-based rhizosphere flow-through system to break down contaminants in contaminated water. The process includes the steps of: providing plants planted in soil in a test bioreactor, the plants providing a rhizosphere; exposing the rhizosphere to the contaminated water; extracting microorganisms from the rhizosphere following their exposure to the contaminated water; preparing a microbial suspension from the extract; subjecting the microbial suspension to growth conditions to increase the concentration of the microorganisms, thereby preparing a soil conditioner; adding the soil conditioner to soil in a contained area having a water flow inlet and outlet; and planting a plurality of plants in the soil, the plants being of the same species as the plants of the test bioreactor.

A solar-powered aeration device for sludge turnover and planting includes a grow bed fixed on a floating body and floats on water. A bottom of the floating body is fixedly connected with an inner pipe; an outer pipe is sleeved outside the inner pipe. The outer pipe is nested in an air chamber; a bottom of the air chamber communicates and is fixedly connected with a water inlet pipe; the water inlet pipe laterally communicates with a suction tube. An aeration ring is fixedly arranged at a bottom of the outer pipe, and the aeration tube has an air outlet pipe in communication with the outside. A movable foot is rotationally provided at a tail end of the suction tube, and the movable foot adapts to surface fluctuations to swing in a range limited by an angle limiter.

A single-stage or multi-stage biological odor control treatment system for the removal of target vapor compounds from a contaminated air stream consisting of a first stage (onsite non-potable water treatment) where raw collection system non-potable water is extracted from the sewer collection system, screened and sprayed over a media bed where it is treated to secondary effluent water quality and is collected in a tank. The onsite non-potable water treatment system effluent is then pumped to the biological odor control system. This onsite non-potable water treatment system effluent is used for irrigating either a single media bed, or multiple media beds, which require continuous moisture and a source of nutrients. The microorganisms use the odorous compounds in the foul air stream as a food source. Treated air is then discharged to the atmosphere. The odor control treatment system drain water is then returned into the source containment collection point.

The disclosure discloses an integrated riparian system for river/lake silt on-site treatment and application thereof, belonging to the technical field of silt treatment. The integrated riparian system includes three subsystems, namely a silt ecological treatment subsystem, a siphon drainage subsystem and a silt leachate advanced treatment subsystem. The silt ecological treatment subsystem is provided with plants, fillers, an aeration pipe and a water collection pipe from top to bottom, and a vent pipe is connected to the water collection pipe. A siphon in the siphon drainage subsystem is retractable and hump-shaped. The silt leachate advanced treatment subsystem includes a first-stage ecological treatment unit upflow wetland and a second-stage ecological treatment unit surface flow wetland. According to the disclosure, dewatering and harmlessness of silt, advanced treatment of silt leachate and purification of part of river/lake water are effectively realized through transpiration and absorption of the plants, filtration and adsorption of the fillers and degradation of microorganisms.

An ecological slope protection has an efficient water purification function, built in a land-lake ecozone along the bank of a basin, wherein the body of the ecological slope protection extends into the water of the basin, and has a flexible mattress laid on the surface thereof; an ecological filter pool is provided below the flexible mattress and is isolated from the water of the basin by means of the pool body; the ecological filter pool is contained with a filler layer and a support layer, and the filler layer is supported by the support layer; the sewage pretreated via a sedimentation pool is introduced into the ecological filter pool and treated by the filler layer to clean up pollutants therein and reduce its eutrophication level; and the treated sewage is discharged from the ecological slope protection via the support layer and enters the basin.

The present disclosure relates to a water environment governance technology, and particularly discloses a method for regulating primary productivity in a eutrophic water body. Emerging plants are cultivated in a water area to be governed to improve anti-wind wave and anti-water flow capabilities of the water area to be governed and establish a relatively stable microenvironment; and a modified clay molecular sieve, phosphorus-accumulating bacteria, grass seeds of submerged plants and silty clay are used to prepare a modified clay molecular sieve ecological base, and the modified clay molecular sieve ecological base is uniformly added to the water body of the area to be governed to inhibit the emission of phosphorus in the deposit and reduce disturbance, so that the cyanobacteria in the deposit is fixed, thereby improving the oxygen-deficient microenvironment of a sediment-water interface and achieving the objective of inhibiting growth of cyanobacteria.

A stormwater treatment system and method for removing sediment, chemical pollutants, and debris from stormwater runoff by utilizing bioretention practices including physical, chemical and biological processes. Stormwater is directed into a primarily open-bottomed, multi-dimensional container whereby entrained sediment and other transportable materials are filtered and treated through a media filter layer consisting of inorganic and/or organic materials. A live plant (preferably a tree) situated within the container with roots resident in the media filter layer with the ability for expansion beyond the perimeter of the container through openings in one or more sidewalls. The treated water may be further conveyed beyond the perimeter of the container by additional openings and/or piping. A vertically positioned overflow/bypass/clean out piping apparatus may be included within the stormwater treatment system to provide additional water conveyance. Additional ancillary conveyance, filtration and storage facilities may be connected to the described stormwater treatment system as conditions warrant.

A method of purifying nutrient contaminated water for safe reuse or discharge, while recovering the fertilizer value of the contaminants. The system includes digestion tanks for the conversion by appropriate fauna and aerobic bacteria of dissolved or suspended organic contaminants into dissolved inorganic contaminants, which are flow connection with biofiltration tanks for the removal by plant root uptake of the dissolved inorganic contaminants. Generally, the digestion and biofiltration tanks are configured wherein contaminated water is conducted between one or more digestion tanks containing detritivorous or omnivorous fauna which feed on suspended contaminants and pathogens and aerobic bacteria which feed on the excreta of the fauna which will solubilize and decompose organic contaminants, oxidize nitrogen compounds into nitrates and competes with pathogens, and one or more biofiltration tanks containing pants potted in the water which uptakes dissolved inorganic contaminants.