The present disclosure belongs to the technical field of sewage treatment, and discloses a method and system for enhanced culture of aerobic granular sludge. The system includes a reaction tank, a water inlet and outlet unit, an aeration unit, and a sludge discharge unit. The water inlet and outlet unit includes a water inlet pump, a water inlet electric valve, a liquid flowmeter, a sewage uniform distribution treatment device, buffers, a water drainage pipe, and a water drainage electric valve. The aeration unit includes a blower, microporous aerators, and a gas flowmeter. The sludge discharge unit includes sludge discharge pumps, a sludge discharge pipe, a sludge discharge electric valve, and a sludge concentration meter. In the present disclosure, a multi-point uniform water distribution method is used. When the flow rate of influent water is adjusted, sewage slowly and uniformly flows through a sludge layer from the bottom of the system, so that the concentration of organic matter in raw water is prevented from being rapidly reduced by rapid single-point water intake, the utilization rate of the organic matter in the sewage is increased to the maximum extent, and the efficiency of the system is improved.

A process for controlling the aeration rate during the aerobic phase of a wastewater treatment process is disclosed, which comprises: (a) measuring at moment t.sub.1 the ammonium concentration [NH.sub.4.sup.+].sub.1 and nitrogen oxide concentration [NO.sub.x].sub.1 in a mixture of wastewater and microbial sludge; (b) determining a nitrogen oxide target concentration [NO.sub.x].sup.F.sub.1 at the end of the aerobic phase based on at least the current ammonium concentration [NH.sub.4.sup.+].sub.1 and the current NO.sub.x concentration [NO.sub.x].sub.1; (c) determining a setpoint [NO.sub.x].sup.SP.sub.1 based on interpolation between [NO.sub.x].sub.1 and [NO.sub.x].sup.F.sub.1; (d) adjusting the aeration rate to minimise error between [NO.sub.x].sub.1 and [NO.sub.x].sup.SP.sub.1; and (e) repeating steps (a) to (d) at further moments t.sub.1. The invention further concerns a process for the treatment of wastewater, using the process.

The present invention relates to compositions and methods for the remediation of contaminated solids and liquids. In particular, embodiments of the present invention relate to the bioremediation of solids and liquids by a composition comprising a biocatalyst or mixture of biocatalysts. The present invention also relates to methods for producing the bioremediation compositions and methods for applying the bioremediation compositions to contaminated sites, including treatment, storage, and disposal facilities, as well as various contaminated water sources, such as aquifers and reservoirs.

Water treatment structures may have at least a first geotextile fabric layer; a second geotextile fabric layer; a third geotextile fabric layer; a first filler layer with plastic particles, arranged between the first and second geotextile fabric layers; and a second filler layer with plastic particles, arranged between the second and third geotextile fabric layers, wherein the geotextile fabric layers and the filler layers are within a housing, and wherein the structure is configured such that contaminated water proceeds sequentially through the first geotextile fabric layer, the first filler layer, the second geotextile fabric layer, the second filler layer, and the third geotextile fabric layer. Methods of treating wastewater may involve passing wastewater, after optional oxygenating and pre-filtering, through such alternating layers of geotextile, preferably nonwoven, and polymer particles.

The present invention relates to the technical field of environmental engineering, and particularly relates to a method for treating and recycling waste slurry in bobbin paper production. The present invention employs aerobic granular sludge technology-based two-stage process of treating and recycling waste slurry in bobbin paper production, and has features of low agent feeding, small floor space occupation, a short operating cycle, and easy controllability. By treating a high-load waste slurry in an adsorption section having aerobic granular sludge, fibrous materials in the waste slurry can be concentrated efficiently and resource substances can be recycled. By treating water discharged from the adsorption section with aerobic granular sludge in a biochemistry section, a water release can be guaranteed to stably meet the standard. By employing the method, the amounts of the fibrous materials and proteins adsorbed by the aerobic granular sludge in the adsorption section reach 710 mg/g MLSS and 140 mg/g MLSS respectively, the concentrations of COD, NH4-N, TP and SS of water released from the biochemistry section are 98 mg/L, 4.1 mg/L, 0.8 mg/L and 100 mg/L respectively, and the removal rates of COD and SS reach 98.8% and 96.2% respectively, enabling water release to meet a corresponding release standard.

A sewage uniform distribution treatment device for an aerobic granular sludge system and a use method therefor, 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 inlet weir (5) is located at the top of the water inlet inner channel (4) and is connected to the water inlet inner channel (4); the vertical water inlet branch pipe (7) is vertically provided in the reactor tank body (1), and the upper and lower ends of the vertical water inlet branch pipe (7) are respectively connected to the water inlet outer channel (6) and the 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 (10) is connected to the water outlet main pipe (9); the outer baffle plate (12) is a vertical baffle plate; the inner baffle plate (13) is located at the bottom of the water outlet channel (10) and is connected to the water outlet channel (10); the inner baffle plate (13) and the water outlet channel (10) are provided at a certain included angle. The device has the advantages of being reasonable in structural design, convenient to operate and use, low in running energy consumption, low in later maintenance costs, and high in automation and intelligence degree, and can realize an ideal contact effect between organic matters and sludge.

In some implementations, a method may include introducing into a contaminated media a suspension of a bioremediation composition. In addition, the method may include where the bioremediation composition may include a first bioremediation composition having a first blend of one or more electrolyte solutions capable of ionic conduction and a second bioremediation composition having a second blend of one or more active materials and being capable of electric conduction.

The present invention relates to compositions and methods for the remediation of contaminated solids and liquids. In particular, embodiments of the present invention relate to the bioremediation of solids and liquids by a composition comprising a biocatalyst or mixture of biocatalysts. The present invention also relates to methods for producing the bioremediation compositions and methods for applying the bioremediation compositions to contaminated sites, including treatment, storage, and disposal facilities, as well as various contaminated water sources, such as aquifers and reservoirs.

A method for intensification of advanced biological nitrogen removal and reduction of endocrine disrupting toxicity, and belongs to the technical field of advanced wastewater treatment includes the steps of utilizing the reaction of calcium sulfate and hydrogen peroxide solution under alkaline conditions to prepare nano-calcium peroxide (n-CP) oxygen-releasing materials, then the polyvinyl alcohol is used as a framework material, the sodium carboxymethyl cellulose is used as a bonding agent, the stearic acid is used as buffering agent and stabilizing agent, the prepared n-CP is used as an oxygen-releasing material, and the quartz sand is used to increase the material density to the sustained-release calcium peroxide nanoparticles (SR-nCPs) through the encapsulation method.

Methods of delivering microorganisms loaded onto an inorganic porous medium. Methods of treating wastewater to increase effluent and biosolids quality. Methods of reducing ammonia and denitrifying wastewater effluent. Methods of reducing phosphorous concentration in wastewater effluent. Composition of biosolids derived from wastewater treatment. Wastewater treatment assemblage for increasing wastewater effluent and biosolids quality.