31results about How to "Shorten the time of anaerobic fermentation" patented technology

This invention relates to a method for promoting sludge to producing organic acid with a surface active agent, which takes the elementary deposition mud, residural sludge or their mixtures of a pollutant water process plant as the raw material to turn the undissolved sludge organics in the mud to organic acid acted by microbials in the mud, the ratio of the volume of the surface active agent and the dry sludge is 0.01: 1-0.3 : 1 and sludge stays for 5 hours-30 days in the reactor, which reduces volume of sludge and pollution to the environment and uses it as the resource.

The invention relates to the technical field of soybean sauce and a production method thereof, and provides white soybean sauce and a production method thereof. The white soybean sauce is prepared by the following steps: firstly, sequentially mixing soybeans with required amount, oatmeal with required amount and bran with required amount, moistening with water, cooking and cooling; secondly, inoculating and making starter to obtain finished starter; thirdly, adding fermented apple paste, salt and maltose into the starter to prepare soy sauce mash; fourthly, carrying out weather exposure, anaerobic fermentation and soaking to obtain white soybean sauce. Compared with a traditional white soybean sauce production method, the white soybean sauce and the production method thereof have the advantages that the period of anaerobic fermentation is shortened, the whole production cycle is integrally shortened, white soybean sauce can be produced in summer, the production efficiency is improved, and the production cost is reduced; the production method thereof has wide industrial production prospects, and is advantageous to the promotion of industrial production of white soybean sauce.

The invention relates to a method for producing a short-chain fatty acid employing combined pretreatment of activated sludge. The method comprises the following steps: (1) carrying out gamma-ray irradiation on activated sludge, so as to prepare gamma-ray irradiated sludge; (2) carrying out ultrasonic treatment on the gamma-ray irradiated sludge, so as to prepare ultrasonic-treated sludge; and (3) adjusting the pH value of ultrasonic-treated sludge, carrying out anaerobic fermentation, so as to prepare the combined pretreated activated sludge. After the activated sludge is subjected to gamma-ray irradiation and ultrasonic treatment, organic matters such as protein and polysaccharide in the sludge dissolved into water can be significantly improved, so that an abundant organic matrix which can be dissolved into water is provided for fermentation and acidogenesis of sludge; the acid production rate of the sludge is improved; the anaerobic fermentation time of the sludge is shortened; and the method has important significance in improvement and optimization of an existing sludge treatment system, energy conservation and consumption reduction, and reduction of the operation cost.

The invention discloses a method for producing short-chain volatile fatty acids by utilizing kitchen wastes and the short-chain volatile fatty acids. The method specifically comprises the following steps: uniformly mixing and stirring the kitchen wastes serving as a fermentation substrate and sludge serving as an inoculum, thereby obtaining a fermentation matrix; and adding alkyl polyglucosides into the fermentation matrix, and performing anaerobic fermentation under a stirring condition. The reduction, recycling and innocent treatment of the kitchen wastes are realized, and the method has the advantages of low operating cost, high profit, high yield of the short-chain volatile fatty acids and the like.

The invention discloses a composite material Met@Fe 3 o 4 The preparation method and application thereof belong to the technical field of environmental protection. The steps of the preparation method of the present invention are as follows: adding ferric chloride, ferrous chloride and methionine into a reaction vessel equipped with ultrapure water, fully stirring, and then adding aqueous sodium hydroxide solution into the reaction vessel until the reaction vessel The pH of the system is 11±0.2, and then the reaction is carried out under the condition of a water bath, and the reaction is carried out under the protection of an inert gas. After the reaction, the black solid obtained by centrifugation, washing with water, and vacuum drying is the target composite material Met@Fe 3 o 4 . The present invention passes through methionine (Met) to ferric oxide (Fe) 3 o 4 ) for surface modification to obtain Met@Fe 3 o 4 Composites, the resulting Met@Fe 3 o 4 It has better dispersibility, biocompatibility and conductivity, and its application in the anaerobic fermentation process of acetic acid can not only greatly increase the production of methane, but also significantly increase the production rate of methane and the degradation rate of acetic acid, and shorten the time of acetic acid anaerobic fermentation. Oxygen fermentation time.

The invention relates to an anaerobic fermentation method, a fermentation product and an animal feed comprising the fermentation product. During anaerobic fermentation, raw materials are improved biotechnologically, and in particular, a feeding value of plant dregs is increased. The anaerobic fermentation method includes the step of mixing the plant dregs with a hydrocarbon compound and an enzyme. By the anaerobic fermentation method, fermentation time in industrial production is shortened effectively and product nutrition value is enhanced.