The Invention discloses an ecological remediation method for controlling sulphur pollution in black and odorous sludge of rivers. Firstly, the sludge from pollution layer of the rivers will be dredged and stacked on the banksides with slope protection built along the outer edge of the sludge storage site; then innocent pretreatment will be conducted for the sludge. Specific steps comprise solarization and ploughing, and mixed ameliorant of certain proportion will be added for modification between first solarization and intermittent ploughing. Then, large emergent aquatic plants will be planted on the stacked sludge after pretreatment. The technical method provided by the Invention may control the release of acid-volatile sulfide in the contaminated sludge on one hand and reduce concentration of volatile organic sulfide in the waters on the other hand. With simple technical process and strong operable technology, the Invention meets the current requirements for controlling sulphur pollution in black and odorous sludge of rivers in China and facilitates realizing the goal of long-term control of sulphur pollution in the deposit of the waters.

The present invention discloses a tower-shape integrated ecological purification device for domestic sewage in a small town. The device includes a water storage and filter pond, a medium reverse osmosis pond, an amphibious biological reaction system, and an aquatic biological reaction system. The amphibious biological reaction system and the aquatic biological reaction system are alternately connected from the top down. The amphibious biological reaction system and the aquatic biological reaction system form an alternating dry and wet, oxidation-reduction compound environment. Plant absorption, biological substrate transformation, aeration, and strengthening medium adsorption are combined to form a multi-stage plant-microbe-animal integrated ecological purification treatment process/device. The present invention achieves the efficient purification and acceptable discharge of domestic sewage in small towns.

A phyto-mediated wastewater treatment bioreactor (PWBR) for treating wastewater effluent and agricultural effluent is disclosed herein. The PWBR is used to clean and remove emerging contaminants from water. These emerging compounds include, but are not limited to, pharmaceutical compounds, steroids and hormones, and industrial and household chemicals. Plants and/or the microorganisms adhering to the plant roots and their growing medium have the ability to take up many of these contaminants and the PWBR maximizes their treatment capability in a given space and time.

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 microorganism, 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.

The present disclosure provides an urban river channel direct purification device. The device includes a support wall panel arranged vertically, an upper tray and a lower tray arranged horizontally, an upper end of the support wall panel is connected with the upper tray, a lower end of the support wall panel is connected with the lower tray, the upper tray and the lower tray are respectively semi-circular, several filler biological walls are disposed between the upper tray and the lower tray, a top end of each filler biological wall is fixedly connected with the bottom of the upper tray, a bottom end of each filler biological wall is fixedly connected with the lower tray, and the filler biological wall is arranged along a radial direction of the upper tray/lower tray. The device can purify the water of the river channel through the adsorption material in the device.

A method for ecologic configuration of an oil production wastewater artificial wetland to realize up-to-standard operation in winter. When artificial wetland is utilized to treat oil production high-salt wastewater, ecologic configuration of subsurface and surface flow artificial wetland is modified to realize up-to-standard operation in winter. Subsurface flow artificial wetland is composed of soil matrix, water distribution pipe disposed on bottom of soil matrix, wrapped with water-permeable nonwoven cloth and configured to deliver wastewater, and reeds with root systems growing on an inner side of wall of water distribution pipe, stems growing on outer side of wall of water distribution pipe and length being greater than thickness of soil matrix; and surface flow artificial wetland is composed of soil matrix, reeds growing on matrix, water, winter aquatic salt-resistant cold-liking plants, block-stocked fishes, shrimps, crabs, mussels, Mytilus edulis, oysters or clams and artificial sand dam.

An object is to realize composting using earthworms of excrement stored under a nonflushing environment such as a temporary toilet. The present invention provides a method for producing vermicompost, including a step of treating excrement with an excrement treatment agent to provide treated excrement, and a step of subjecting the treated excrement to composting in soil containing earthworms.

Some embodiments advantageously provide nutrient-binding compositions that include ingredients that have a synergistic effect such that the nutrient-binding composition is capable of removing more nutrients that the individual ingredients added together. In one embodiment, a nutrient-binding composition comprises: a first amount of a nutrient-binding ingredient; and a second amount of a biogenic additive, the first amount being greater than or equal to the second amount. In one aspect of the embodiment, the nutrient-binding composition has a greater nutrient removal capacity from a volume of water than an additive nutrient removal capacity of the first amount of nutrient-binding ingredient and the second amount of biogenic added together.

A water filtering tank comprising a housing of the water filtering tank, water inlet pipe (3) installed on the housing receiving water into the tank, water distributing sheet (2) in which the said sheet is arranged inside the tank at the height lower than the inlet pipe (3) in which the said distributing sheet receives water flow through the inlet and comprises a plurality of pores positioned throughout the said sheet, rough filtering basket (1) in which the supporting lower surface comprises a plurality of pores and the said basket comprises rough filtering materials inside which arranged in the basket at the height less than the distributing sheet (2) and receives water flow through the said water distributing sheet, filtering material basket which is arranged inside the basket at the height less than that of the rough filtering basket (1) and comprises the filtering materials arranged into multiple layers and water outlet pipe (7) installed with the housing and releases water. Characterized in that the water filtering basket comprises a siphon tube supporting base (6) which is arranged at the lower part of the housing and further comprises a water outlet standing pipe (8) vertically installed on the said base and has the height less than the height of the inlet in which water is sucked out of the housing through the lower water outlet standing pipe (8) connected with the water outlet pipe (7) when water level filled inside the housing is at the same level as that of the water outlet standing pipe (8), siphon tube (10) covering the water outlet standing pipe (8) and further comprises snock tube (11) in which is in the U-shape having one end connected with the siphon tube at the predetermined height.

The embodiments of the present technology relate in general to an improved bioretention system for stormwater treatment through volume control and various filtration processes in a horizontal flow media bed. In particular, the disclosed bioretention system transfers water through the media bed horizontally and notably has two sided void area for influent runoff to pond and build up adjacent to the media bed where water is pre-treated, sediments settle on the floor area and water flows into the media bed via its vertical surface.