摘要:
A method and system for hydrogen production from organic material such as waste. The system includes a bioreactor for continuous anerobic fermentation to produce hydrogen in which a mixture containing a microorganism and organic material is sonicated. The system optionally includes a biomethanator connected in-line with the bioreactor.
摘要:
The present invention relates to a process for pretreatment of a feedstock in a pretreatment tank. Various parameters, such as oxidation-reduction potential, pH, and temperature, are monitored in the pretreatment tank to determine whether the oxidation-reduction potential, pH, and temperature are each within a predetermined range. The volume of feedstock inside the pretreatment tank is adjusted in response to a determination that one of the oxidation-reduction potential, pH, and temperature of the treated material are outside the corresponding predetermined ranges to maintain the oxidation-reduction potential, pH, and temperature of the treated material within operating conditions.
摘要:
A method and an equipment for monitoring the syntrophic relations between different parts of a bacterial consortium in the process fluid of a biological process plant, such as a biological gas plant or waste water treatment plant, through a chromatographic measurement of the content of the individual volatile fatty acids in consecutive samples of the process fluid, the samples being acidified and filtered prior to the chromatographic separation
摘要:
The present disclosure generally relates to a system for monitoring and/or controlling the delivery of one or more organic carbon compounds to a wastewater treatment system. The system comprises a bio-electrochemical sensor to monitor metabolic activity of a population of exo-electrogenic bacteria and provide an electrical output corresponding with the metabolic activity, the bio-electrochemical sensor comprising an electrode pair and a power source to deliver a voltage across the electrode pair, and an electrical output analyzer to analyze the electrical output and correlate the electrical output with a value representing the amount of the one or more organic carbon compounds in the wastewater treatment system. A method and sensor for monitoring and/or controlling the delivery of one or more organic carbon compounds to a wastewater treatment system are also provided.
摘要:
A biofilm process is disclosed for treating wastewater containing readily biodegradable dissolved organic matter GP (measured as chemical oxygen demand or COD) and producing surplus biomass from the biofilm process that includes an enhanced polyhydroxyalkanoate (PHA) content. The process comprises directing a wastewater influent containing the readily biodegradable COD (RBCOD) into a biofilm unit process. The PHA content of surplus biomass is enhanced by controlling for a decreased biofilm process specific organic loading rate in combination with controlling phosphorus loading rates relative to the process RBCOD loading rates: (1) controlling the wastewater influent phosphorus loading rate to the biofilm unit process includes maintaining an average RBCOD/P ratio of the influent that is between 200 and 800 g/g; (2) decreasing the process specific organic loading rate includes producing a biofilm unit process effluent having readily separable mixed liquor volatile suspended solids (RS-MLVSS); and (3) separating a portion of the RS-MLVSS from the biofilm unit process effluent and recycling at least a portion of the separated RS-MLVSS back to the biofilm unit process. The combination of the RBCOD/P control and specific loading rate control maintains, on average, the surplus biomass with a PHA content that is greater than 30% gPHA/g VSS.
摘要:
A method and system for hydrogen production from organic material such as waste. The system includes a bioreactor for continuous anerobic fermentation to produce hydrogen in which a mixture containing a microorganism and organic material is sonicated. The system optionally includes a biomethanator connected in-line with the bioreactor.
摘要:
A method of treating bio waste including the steps of (1) fermenting substantially raw biowaste in a pathogen reduction stage under anaerobic conditions for a predetermined period at a temperature in the mesophillic temperature range and (2) subsequently separating the solid and liquid phases to produce a fermented cake and fermented liquor. The fermented cake has at least 15% solids on dry basis and contains over 500 mg/L ammonia, over 1,000 mg/L total Volatile Fatty Acids (tVFA) and Escherichia coli less than 100,000 cfu per g dry solids. The fermented liquor contains over 10,000 mg/L COD, over 500 mg/L ammonia, over 1,000 mg/L tVFA and less than 5,000 mg/L of suspended solids.
摘要翻译:一种处理生物废弃物的方法,包括以下步骤:(1)在嗜酸性条件下,在中胚层温度范围内的温度下,在厌氧条件下,在病原体还原阶段发酵基本上生的生物废物,并且(2)随后分离固相和液相以产生 发酵蛋糕和发酵酒。 发酵饼具有至少15%的干燥固体含量,含有超过500mg / L的氨,超过1,000mg / L的总挥发性脂肪酸(tVFA)和大肠杆菌,每克干固体少于100,000cfu。 发酵液含有超过10,000mg / L COD,超过500mg / L氨,超过1,000mg / L tVFA和小于5,000mg / L的悬浮固体。
摘要:
Disclosed herein is a system comprising a primary digester and a digester emulator. The digester emulator is capable of dynamically estimating the primary digester performance.
摘要:
Processes and system are provided for digesting biosolids in a multistage digestion system. The processes and system are well suited for producing Class A biosolids and biogas containing a high content of methane. Methods and systems are also provided for recovery of phosphorus from wastewater and biosolids.
摘要:
Method for simultaneous selection and maintenance of a selected microbial consortium for polyhydroxyalkanoates (PHA) production in only one step, said microbial consortium being fed with at least one readily biodegradable carbon substrate, comprising a first step of aerobic cultivation of said microbial consortium in a mixed biological reactor. According to the invention, the specific cell growth rate μl of said microbial consortium is fixed at a target value, in said first step of aerobic cultivation and in that said first step of aerobic cultivation is performed under nutrient limitation such as the readily biodegradable carbon substrate uptake rate qS1 unbalanced with said fixed specific cell growth rate μ1.