58results about How to "Reduce production water consumption" patented technology

The invention relates to an industrialization method for comprehensive utilization of stevia. The method is mainly characterized in that the stevia is extracted with a high-concentration alcohol solution, then the obtained extract is purified by using an organic solvent, and the extract is adjusted to be alkaline according to the acidic characteristic of chlorogenic acid to make the chlorogenic acid form a salt and have an increased polarity in order to realize effective separation of the chlorogenic acid and a glucoside component in the adsorption link. The method allows the high-quality stevioside and chlorogenic acid to be obtained, significantly improves the comprehensive utilization rate of stevia, reduces the waste of natural stevia resources, reduces the resource consumption in theproduction process, reduces waste discharge, is a high-benefit green production process, and can greatly advance the industry.

The invention relates to an industrial method for synchronously preparing stevia rebaudiana chlorogenic acid and stevioside. The industrial method includes carrying out alcohol extraction on stevia rebaudiana which is used as a raw material, and then adjusting feed liquid states to allow chlorogenic acid to be in free molecular states; carrying out extraction separation by water-insoluble moderate-polarity organic solvents; enriching the stevia rebaudiana chlorogenic acid on organic layers; enriching the stevioside on water layers. Compared with the traditional water extraction processes, theindustrial method has the advantages that chlorogenic acid components in the stevia rebaudiana can be prevented from being hydrolyzed, so that the contents and effects of effective components in stevia rebaudiana chlorogenic acid products can be guaranteed; effective separation can be carried out on the premise that the quality and the production efficiency of stevioside products are unaffected, the production efficiency can be greatly improved, and the proportion of isochlorogenic acid in the obtained products is close to the proportion of isochlorogenic acid in the raw material; production water consumption can be reduced to a great extent, discharge of sewage and flocculation residues can be decreased, accordingly, the industrial method is a green production process with high benefits,and the progress of the industry can be promoted to a great extent.

The invention relates to a printing and dyeing wastewater reuse, and particularly relates to a device and a method for printing and dyeing wastewater water-soluble dye recovery on the basis of a membrane separation technology. The device comprises a raw water booster pump, a self-cleaning filter, a precise filter, an ultrafiltration membrane assembly, an ultrafiltration backwash pump, an ultrafiltration water tank, a high-pressure pump, a nanofiltration membrane assembly, and a reducer and scale inhibitor pouring system which are communicated with a wastewater collection pool. The method comprises the steps of draining the dyed wastewater to the wastewater collection pool and pumping the dyed wastewater in the self-cleaning filter through the raw water booster pump to remove large-particle suspended matters and impurities, then entering the wastewater into the precise filter to remove the remainder suspended matters, then entering the wastewater into an ultrafiltration membrane to remove bacteria, colloids and macromolecular organic compounds, finally pumping the wastewater in a nanofiltration membrane device through the high-pressure pump to remove micromolecular organic compounds and divalent ions, thereby producing high-quality reclaimed water and simultaneously intercepting and recovering most of activated dye molecules.

The invention relates to a rotating disc type micro-grid assembly for a backwash-free dynamic membrane. The rotating disc type micro-grid assembly comprises a circular-disc shaped filter tank, wherein the interior of the filter tank is a micro-grid cavity; the rotating disc type micro-grid assembly is characterized in that a micro-grid base material is an outer micro-grid; the filter tank is an outer filter tank; a central water outlet pipe perpendicular to a disc surface of the outer filter tank is arranged on a circle center part of the outer filter tank; a water outlet rotating disc which is matched with the central water outlet pipe in a sliding mode is sleeved on the central water outlet pipe; clamping discs which are fixedly connected with the central water outlet pipe and are fixed on two sides of the outer micro-grid are respectively sleeved on two sides of the water outlet rotating disc; a circular-disc shaped inner filter tank which is connected with the water outlet rotating disc is arranged in the outer filter tank coaxially; teeth are circumferentially arranged outside the inner filter tank; a disturbance water catchment channel is arranged in the outer filter tank; a transmission gear engaged with the teeth are arranged in the outer filter tank; a rotational vibration attenuation brush plate of which a plurality of brush hairs are in contact with the back side of the outer micro-grid is arranged on the inner micro-grid surface which covers the disc surface of a water receiving disc; and a disturbance water drainage nozzle is arranged on the bottom of the outer filter tank. The rotating disc type micro-grid assembly has the advantages of stability in yielding water quality, high flux, high water production rate and simplified facilities.

The invention discloses a water treatment device for treating raw water with higher turbidity variation and a water treatment technology of the water treatment device. Due to the characteristic of the wider turbidity variation range of the raw water, pretreatment, conventional treatment, advanced treatment and recycled water treatment processes are optimized and combined, the operation mode can be adjusted under the condition of different turbidities of the raw mater, the treatment procedure is optimized on the premise that the effluent quality is guaranteed, the production water consumption of a water factory is reduced, reusable production wastewater is recycled, and the utilization rate of the raw water is effectively increased. The combination technology has the advantages that the land can be saved, the procedure is optimized, the production water consumption is reduced and the automatic management level is improved, and has a remarkable advantage in the aspect of guarantee of the effluent quality.