254 results about "Wastewater systems" patented technology

In a wastewater treatment system and process utilizing membrane bioreactors (MBRs), multiple, parallel series of tanks or stages each include, an MBR stage. Under conditions of normal flow volume into the system, influent passes through several parallel series of stages or process lines, which might be, for example, an anoxic stage, an aeration stage and an MBR stage. From the MBR stages a portion of M.L.S.S. is cycled through one or more thickening MBRs of similar process lines, for further thickening and further processing and digesting of the sludge, while a majority portion of the M.L.S.S. is recycled back into the main process lines. During peak flow conditions, such as storm conditions in a combined storm water / wastewater system, all of the series of stages with their thickening MBRs are operated in parallel to accept the peak flow, which is more than twice normal flow. M.L.S.S. is recycled from all MBR stages to the upstream end of each of all the parallel process lines, mixing with influent wastewater, and the last one or several process lines no longer act to digest the sludge. Another advantage is that with the thickened sludge in the last process line of basins, which ordinally act to digest the sludge, there is always sufficient biomass in the system to handle peak flow, the biomass being available if needed for a sudden heavy flow or an event that might bring a toxic condition into the main basins.

The invention discloses a method and a system for treating desulfurization wastewater, which are applied to treating the wastewater generated from limestone-plaster wet flue gas desulfurization and other wastewater with high salt content. The system comprises a drying tower, a circular spray system, a flue gas stirring device and a filter press. The method comprises the steps: in the drying tower, hot flue gas and desulfurization wastewater exchange heat through convection contact so as to lead the wastewater to evaporate and concentrate to generate crystal; the filter press is adopted to carry out solid-liquid separation; and mother liquor continually refluxes and is treated. The method and the system have the advantages of low cost, little area occupation and low energy consumption, which can realize zero discharge of the wastewater of the limestone-plaster wet flue gas desulfurization technology and improve contribution.

Uses for a composition comprising a polymer derived from at least two monomers: acrylic-x and an alkylamine, wherein said polymer is modified to contain a functional group capable of scavenging one or more compositions containing one or more metals are disclosed. These polymers have many uses in various mediums, including wastewater systems.

The present invention provides a beverage maker having an in-line heating assembly for heating water to make hot beverages such as coffee and tea. The heating assembly defines a flow path that runs past a plurality of heaters for heating water to a desired temperature. In this manner, the beverage maker heats water as it travels, alleviating the need for a water tank or vessel, resulting in increased savings in weight and size, as well as reducing brew time. Additionally, an optical sensor assembly is provided to detect when a serving container of the beverage maker has a prescribed capacity of liquid within it. The sensor assembly includes at least one light source aligned to shine into the container and at least one detector aligned to detect light reflected off the liquid surface within the container. A drainage assembly is also provided that can drain liquid through either a connector port into an airplane's wastewater system or through a drainage port into a drainage sump.

A method of removing one or more heavy metals from industrial wastewater by use of a membrane separation process is disclosed. Specifically, the following steps are taken to remove heavy metals from industrial wastewater: (a) collecting an industrial wastewater containing heavy metals in a receptacle suitable to hold said industrial wastewater; (b) adjusting the pH of said system to achieve hydroxide precipitation of said heavy metal in said industrial wastewater; (c) adding an effective amount of a water soluble ethylene dichloride- ammonia polymer having a molecular weight of from about 500 to about 10,000 daltons that contain from about 5 to about 50 mole percent of dithiocarbamate salt groups to react with said heavy metals in said industrial wastewater system; (d) passing said treated industrial wastewater through a submerged membrane, wherein said submerged membrane is an ultrafiltration membrane or a microfiltration membrane; and (e) optionally back-flushing said membrane to remove solids from the membrane surface.

The invention provides a micro-electrolysis-Fenton-EGSB-A / O-BCO-BAF-coagulation treatment pharmaceutical wastewater system. The system composition comprises an oil separation pool, a regulation pool, a micro-electrolytic reaction pool, a Fenton catalytic oxidation tower, a horizontal flow type primary sedimentation pool, an integrated regulation pool, a hydrolysis acidification pool, a swell granule sludge bed, an anoxia / aero-biotic pool, a two-stage biological contact oxidation pool, and a secondary sedimentation pool, a biological aerated filter pool, a coagulating pool, an air floating tank and an end sedimentation tank; wherein 200t / d low concentration pharmaceutical and 50t / d domestic sewage are input to the integrated regulation pool and fully mixed with wastewater, after the dilution, the COD concentration is reduced, and the biodegradability of the wastewater is increased, after jointly going into the follow-up process system for processing, the wastewater reaches the standard and is discharged; the flat flow type primary sedimentation pool, the secondary sedimentation pool, the coagulating pool, the BAF pool and the end sedimentation and the sludge concentration are connected, and are connected with the plate-and-frame press filter machine; the sludge of each pool is collected to a sludge concentrated pool, after being concentrated then dehydrated by the plate-and-frame press filter machine, finally the sludge cakes are transported to the outside. The system is stable in efficiency, strong in shock resistance load ability.

A method of funding environmentally-driven public or private works projects (e.g., stormwater management and diesel fuel usage and emissions reduction projects, and generally any environmentally-driven project) that creates legacy utility or user fee-based programs so as to address urgent or mandated, environmental-related public concerns. The fund is employed to allow for projects to pass from concept to feasibility to operations stages without the need for interruption due to financial resources. Projects include any local government, State or County-influenced government, or private industry-focused initiative that triggers negative public attention and / or any potential federal sanction, penalty, or specific public notice or cost due to inaction, lack of study, or lack of seed funding mechanism. Examples include stormwater management, NPDES, floodplain management, water supply development, coastal shore protection development, wetlands banking, natural resources protection area, parks protection, water / wastewater systems, industrial air pollution abatement, diesel fuel use and emissions reductions, or other environmental development concerns.

A heat recovery device is provided for recovering thermal energy from a fluid medium, in particular for use in a waste-water system of a dishwasher. The heat recovery device comprises at least one heat exchanger with at least one heat exchanger surface. The heat recovery device further comprises at least one heating device, which is thermally coupled to the heat exchanger surface, and also at least one controller. The controller is designed to carry out a self-cleaning process for the heat exchanger, with the heat exchanger surface being briefly heated by means of the heating device during the self-cleaning process.

A new inner passageway through a pre-cast concrete structure damaged by corrosion may be formed by stackable inserts formed of polymer concrete. The inserts may be stacked in the old passageway through the pre-cast concrete structure such that an inner surface of the stacked inserts forms a new passageway through the pre-cast concrete structure. A grout may be poured between an outer surface of the stacked inserts and an inner surface of the pre-cast concrete structure forming the old passageway. The surfaces of the stackable inserts may have superior resistance to corrosive acids such that the need for future repair is greatly reduced. Suitable pre-cast concrete structures for rehabilitation include pre-cast concrete structures utilized in wastewater systems, including manholes and other similar structures. In this manner, the damaged pre-cast concrete structures do not need to be removed during the rehabilitation.

The invention relates to a system and method to remove nitrogen, particularly nitrate, from wastewater utilizing denitrifying bacteria, sulfur as an electron donor and mollusk shells as alkalinity agent. Embodiments of the invention include a denitrification system comprising a bioreactor unit, denitrifying media comprising layers of elemental sulfur and oyster shells 3:1 by volume, and can further include a pretreatment unit and additional septic-system and / or wastewater-system components. Embodiments of the method include multiple steps utilizing the system and additional process steps that achieve increased autotrophic denitrification.

The invention discloses a method and a system for treating desulfurization wastewater, which are applicable to treating the wastewater generated from limestone-plaster wet flue gas desulfurization and other wastewater with high salt content. The system comprises a spray drier, a flue gas transport pipeline, a dust catcher, a smoke exhaust fan, a waste ash outlet and the like. The method comprises the steps: in the spray drier, hot flue gas and the desulfurization wastewater exchange heat through convection contact, so as to change the wastewater to particles and wet flue gas, discharge the settled particles and remove the wet flue gas and the suspended particles through the dust catcher. The method and the system have the advantages of low cost, little area occupation and low energy consumption, which can realize zero discharge of the wastewater of the limestone-plaster wet flue gas desulfurization technology and improve contribution.

The invention relates to a combination process for producing aromatic hydrocarbon from synthetic gas. According to the combination process, synthetic gas is pre-heated, the pre-heated synthetic gas enters a buffer tank and is mixed with circulation gas, the obtained mixed gas enters a fixed bed reactor R1, a methanol synthesis reaction is performed, the outlet gas is cooled and then enters a fixed bed reactor R2, an aromatization reaction is performed, the outlet gas is cooled with a cooler and then enters a gas-oil-water three-phase separator, the separated water phase is discharged and enters a wastewater system, the oil phase is collected as the product, one part of the gas phase is pressurized through a circulation compressor, the pressurized gas phase is heated and then enters the buffer tank, and the other part of the gas is adopted as the Chi-deflated gas. The combination process of the present invention has advantages of low energy consumption, easy operation, and low equipment investment.

Uses for a composition comprising a polymer derived from at least two monomers: acrylic-x and an alkylamine, wherein said polymer is modified to contain a functional group capable of scavenging one or more compositions containing one or more metals are disclosed. These polymers have many uses in various mediums, including wastewater systems.

A composition comprising a polymer derived from at least two monomers: acrylic-x and an alkylamine, wherein said polymer is modified to contain a functional group capable of scavenging one or more compositions containing one or more metals is disclosed. These polymers have many uses in various mediums, including wastewater systems.

The present invention provides a beverage maker having an in-line heating assembly for heating water to make hot beverages such as coffee and tea. The heating assembly defines a flow path that runs past a plurality of heaters for heating water to a desired temperature In this manner, the beverage maker heats water as it travels, alleviating the need for a water tank or vessel, resulting in increased savings in weight and size, as well as reducing brew time. Additionally, an optical sensor assembly is provided to detect when a serving container of the beverage maker has a prescribed capacity of liquid within it. The sensor assembly includes at least one light source aligned to shine into the container and at least one detector aligned to detect light reflected off the liquid surface within the container. A drainage assembly is also provided that can drain liquid through either a connector port into an airplane's wastewater system or through a drainage port into a drainage sump.

The invention relates to a microwave electro-Fenton method for processing organic wastewater and a device thereof. Under the action of microwave, a boron-doped diamond film electrode is used as an anode material for electrochemical degradation processing, and organic pollutant containing wastewater is processed efficiently by an electrochemical method. According to the invention, the boron-doped diamond film electrode is utilized to continuously generate hydroxyl radical with strong oxidation capacity in a wastewater system containing divalent iron ions, and in-situ activation of the boron-doped diamond film electrode is carried out by means of thermal effect and non-thermal effect of microwave so as to increase activity of the electrode and promote mass transfer process during the degradation process of organic pollutants. Therefore, the oxidation capacity of the electro-Fenton reaction is enhanced, and mineralization reaction rate is effectively accelerated. In comparison with traditional Fenton and electro-Fenton methods, the processing effect of the microwave electro-Fenton method provided by the invention is effectively enhanced. The method provided by the invention is simple to operate, has a good effect of processing organic wastewater, and has a wide application prospect as well as development potential.

The fuel alcohol dewatering apparatus a rectification tower and a stripping tower connected serially, two parallel molecular sieves with valves in the inlets and the outlets, an overheater, a product cooler, a material preheater, a feeding pump, a waste water pump and a vacuum pump. The present invention has low power consumption, high energy recovering rate, no environmental pollution and high production efficiency.

In some embodiments, a wastewater treatment system may reduce contaminants in water. A system may include one or more bioreactors which include a substrate that supports a biofilm. The bacteria used to form the biofilm may be selected to maximize the reduction of contaminants in water. Various components of the wastewater treatment system may be optimized to improve the efficiency and energy consumption of the wastewater system.

This invention is to the removal of organics and nutrients from wastewater. More specifically, the invention addresses the removal of nutrients such as nitrogen and / or phosphorus from wastewater and has specific adaptations that can be of added benefit in small systems including septic tanks, cluster wastewater systems, and other small treatment plants. The invention can also be used for larger treatment works and for sidestream treatment systems. The invention also has adaptations that can be used to treat wastewater in low gravity and other difficult environments. The invention also has adaptations to permit rapid startup, to induce dormancy, and to preserve organisms for extended periods of time.

A nutrient-germinant composition to aid in spore germination and a method for increased spore germination efficiency. The composition comprises L-amino acids, D-glucose and / or D-fructose, a phosphate buffer, an industrial preservative, and may include bacteria spores or they may be separately combined for germination. The method comprises providing a nutrient-germinant composition and bacteria spores, preferably of one or more Bacillus species, and heating to a preferred elevated temperature range of 41° C. to 44° C. for an incubation period of around 2 to 60 minutes. The nutrient-germinant composition is preferably in a concentrated liquid form that is diluted just prior to initiating the germination / incubation method at the point of use. The method may also include dispensing a germinated spore solution to a point-of-use / consumption, such as animal feed, water, or bedding, or a wastewater system or drain.

The invention provides a treatment device and method of printing and desizing mixed wastewater. The treatment device of the printing and desizing mixed wastewater is characterized by comprising a water collecting regulating tank, a reinforced circulating type efficient anaerobic bioreactor, an aerobic biological contact oxidation tank, a gas-flotation tank, a high-level oxidization tank and an aeration biological filter tank. The treatment device and method disclosed by the invention are especially suitable for treating the high-ammonia-nitrogen high-concentration printing and desizing mixed wastewater generated in printing and desizing processes, a process system disclosed by the invention is adopted to effectively treat the high-concentration high-ammonia-nitrogen wastewater generated by the printing process and high-concentration high-alkaline wastewater generated by the desizing process in printing and dyeing enterprises after the two kinds of wastewater are subjected to flow-dividing and mixing, and also can be combined with a wastewater treatment process for other relatively-low-concentration pollutants in a printing and dying plant to form a complete wastewater treatment system of the enterprise, thereby realizing modifying and upgrading an existing wastewater system.

A system for reasonably optimizing and distributing carbon source in the treatment of refractory wastewater consists of at least one section of biological tank and at least one section of sedimentation tank which are sequentially connected, wherein refractory industrial wastewater or urban wastewater partially or completely enters the biological tank sectionally according to a ratio, the effluent of the biological tank enters the sedimentation tank, and the effluent of the biological tank is discharged; and sludge in the sedimentation tank partially or completely reflows to the biological tank. The invention has stronger impact-resistant and load-bearing capability, sectional inflowing, flexible operation, good treatment effect and relative low cost, and is applicable to treatment of urban wastewater with high ratio of chemical wastewater, complicated wastewater composition and large treatment difficult in municipal sewage.

The invention discloses a high-salinity and high organic matter wastewater treatment process which comprises the following steps: by means of waste low-temperature exhaust heat in a plant, at a low temperature of 50-70 DEG C, concentrating high-salinity and high organic matter substances in wastewater into solids to be collected in a gas-liquid falling film evaporator through five process steps; and converting the high-salinity and high organic matter water into evaporated vapor water, and condensing and recovering so as to recover the high-salinity and high organic matter wastewater. The process provided by the invention is low in working temperature, does not cause scale formation and can prevent corrosion, and equipment is simple and convenient to maintain, low in investment cost and small in occupied area. The process completely separates water and pollutants in the high-salinity and high organic matter wastewater, no medicaments are added in the treatment process, and residual heat is used in treatment and operation, and little power is just consumed, so that zero emission of the wastewater system is realized, the water source is saved while the environment is protected. The process is suitable for being popularized and applied to wastewater treatment in the industries such as petrochemicals and chemical engineering and the like.

A method and portable system is disclosed for treating waste water received at a first location while in-transit to a second location. Waste water received by a portable treatment system is used to treat waste water while stationary at a first location and then the portable waste water system continues to treat the waste water while the portable treatment system is in-transit between the first location and a second location. This allows the transit time of the portable treatment system to be utilized to improve the quality of the waste water in the portable treatment system. Untreated waste water can be received by the system at a first location and during transport the waste water is treated by the portable treatment system, improving the quality of the effluent discharged from the portable treatment system when it arrives at the second location.

The invention provides a biomineralization-based acidic mine wastewater treatment system which comprises a water inlet end, a regulation unit, a biological oxidation mineralization unit, a lime neutralization unit, a lime dissolution unit, a neutralization residue reflux unit and a water outlet end. After the pH value of the acidic mine wastewater is regulated to 3.0, the acidic mine wastewater sequentially enters the biological oxidation mineralization unit and the lime neutralization unit to be treated, thereby reaching the discharge standard. By using the system and method provided by the invention, Fe<2+> in the acidic mine wastewater system can be completely oxidated within 48-60 hours, and meanwhile, the synthetic quantity of the secondary iron minerals can be enhanced by 30-60%. Compared with the conventional lime neutralization technique, the lime consumption is reduced by 30-50%.

The invention relates to methods and compositions for controlling foam, i.e., defoaming or inhibiting the formation thereof, in aqueous systems including wastewater systems and in aqueous industrial process systems by adding primary alcohol, alcohol alkoxylate, and emulsifier to the aqueous system, such as in a stable aqueous composition.

The invention provides a molecular oxygen activation-coupled water treatment method employing high-efficiency neutral electro-fenton oxidation. The method comprises the following steps: in a to-be-processed wastewater system of which the pH is adjusted to 5-9 in advance, taking a substance containing zero-valent iron as an anode, a porous carbon electrode as a cathode and polyphosphate as supporting electrolyte to form an electro-fenton system; electrifying, and simultaneously providing air or oxygen to the cathode lastingly; and carrying out electro-fenton oxidation treatment on the to-be-processed wastewater. By adopting the electrolyte polyphosphate used by the method, not only can the removal rate of organic pollutants in the wastewater and the actual chemical oxygen demand (COD) removal rate of the wastewater be greatly improved, but also a lot of iron cement generated by iron ion hydrolysis can be avoided, and the subsequence treatment process is simplified. Thus, the molecular oxygen activation-coupled water treatment method is applicable to treatment of various organic wastewater.

The spent liquor (SL) of a thermomechanical pulping (TMP) process introduces a high load to the wastewater system of this process. To reduce this load, fly ash from a biomass boiler is used and the application of fly ash improves the performance of biological process. Three different alternatives are introduced to apply fly ash to treat spent liquor.