7results about How to "Achieving zero emissions" patented technology

This utility model discloses a zero-discharge wastewater system for the tire industry, relating to the field of water treatment technology. The technical solution includes a first water treatment unit, a primary reverse osmosis unit, a primary reverse osmosis concentration unit, and a secondary reverse osmosis system for deep treatment. The first water treatment unit includes a raw water tank, a self-cleaning filter, an ultrafiltration system, and an ultrafiltration permeate buffer tank connected in sequence. The secondary reverse osmosis system for deep treatment treats the concentrated water from the second concentrated water tank using secondary reverse osmosis. By setting up a primary reverse osmosis unit, a primary reverse osmosis concentration unit, and a secondary reverse osmosis system for deep treatment, this application achieves high water utilization and low energy consumption requirements for the tire industry by treating the concentrated water from the second concentrated water tank using secondary reverse osmosis.

The invention discloses a starch wastewater treatment resource recycling method which comprises the following steps: precipitating unhydrolyzed starch in strongly acidic starch wastewater to obtain precipitated effluent and precipitated slurry; performing membrane filtration on the precipitated effluent to generate membrane filtration produced water and membrane filtration concentrated water; adsorbing specific ions in the membrane filtration produced water by adopting a selective adsorbent to obtain adsorbed produced water and an adsorption saturated adsorbent; an acid removal agent is added into the adsorption saturated adsorbent for acid removal regeneration, a desorption solution and a regenerated adsorbent are obtained, and the regenerated adsorbent participates in adsorption of specific ions again; and concentrating the desorption liquid to obtain the compound fertilizer production raw material. Specific ions in the starch wastewater can be adsorbed, and the specific ions adsorbed in the adsorbent are subjected to acid removal, so that the adsorbent is recovered and can be used for adsorption again, the cyclic utilization of the adsorbent is realized, and meanwhile, a desorption solution generated by the acid removal of the adsorbent can form a production raw material of a compound fertilizer after being concentrated.

The utility model belongs to the technical field of industrial waste residue recycling, and particularly discloses a system for producing lime from carbide slag. The system is composed of a carbide slag warehouse, metering equipment, conveying equipment A, conveying equipment B, conveying equipment C, conveying equipment D, a homogenization metering system, a cyclone preheating system, a cyclone calcination decomposition system, a suspension cooling system, a lime warehouse, a homogenization metering system, granulation equipment, a calcium carbide production line and the like. The device disclosed by the utility model has the beneficial effects that the process flow is simple, the layout is compact, the suspension preheating decomposition calcining technology of cyclone preheating, pipeline type decomposition furnace and suspension cooling is adopted, continuous production can be realized, the production efficiency is high, the decomposition rate of carbide slag is greater than 98%, and the yield is high; according to the utility model, the calcium carbide slag suspension calcination technology is adopted, the unit product energy consumption of lime can be reduced, so that the unit energy consumption of calcium carbide finished products is reduced, the calcium carbide by-product furnace gas is adopted as the calcination fuel, the reasonable and full utilization of coal resources can be realized, and no extra coal resource consumption is caused.

This invention discloses a method and system for treating fermentation wastewater, belonging to the field of fermentation wastewater treatment. This invention solves the problems of non-zero discharge, low treatment efficiency, and high treatment difficulty in existing technologies for fermentation wastewater. This invention designs different treatment routes and systems for three types of wastewater with different characteristics: high-salinity wastewater, low-salinity wastewater, and microbial protein waste liquid. For high-salinity wastewater, a process of screen + coagulation sedimentation + multi-media filtration + ozone catalytic oxidation is used to remove organic matter and total phosphorus; for low-salinity wastewater, a highly active sludge biochemical treatment technology is used to remove nitrogen and phosphorus; and for microbial protein waste liquid, a sludge collection + screw press dewatering technology is used to achieve thorough dewatering. The treatment processes for the three types of wastewater are carried out simultaneously, and the effluent is recycled back into the three systems for further treatment, achieving zero discharge of fermentation wastewater. Furthermore, this treatment method reduces the wastewater treatment pressure on the system, improves treatment efficiency, and allows for wastewater reuse, showing broad application prospects.

The application discloses a kind of recycled concrete artificial stone, it is related to building waste resource utilization and recycled concrete product technical field technical field.A kind of recycled concrete artificial stone, artificial stone mass parts composition is as follows: filling material: 70-95 parts;Filling material is selected from building waste recycled mixture, recycled coarse aggregate, recycled fine aggregate, recycled sand powder, recycled micro powder one or any combination of several;Cementitious material: 5-30 parts;Cementitious material is selected from portland cement, solid waste-based cementitious material, alkali activator one or any combination of several;Water: cementitious material and water water-cement ratio is 0.28-0.42.The present application can be fully efficient, crack industry pain point, realized the collaborative disposal utilization of three building wastes, utilizes the cementitious activity of recycled micro powder to match solid waste-based cementitious material, effectively stabilizes the big problem of performance fluctuation of recycled aggregate, process simplification, production efficiency revolution, excellent performance, scene full coverage, green low carbon, economic.

The application discloses a microwave-probiotics synergistic process for enzymatic Cordyceps militaris protein peptide and application thereof, and belongs to the field of food biotechnology. In view of the problems of low hydrolysis efficiency, poor retention of active ingredients, limited bioavailability and lack of greenness in the preparation of Cordyceps militaris protein peptide, after supercritical CO2 defatting pretreatment, a "complex protease-intermittent microwave-delayed addition of probiotics" synergistic system is constructed, and high-efficiency directional hydrolysis is realized by precise control of parameters; the finished product is obtained through subsequent step-by-step inactivation, 10 kDa ultrafiltration purification and low-temperature vacuum drying; with the synergistic effect of microwave wall breaking and probiotic metabolites (organic acids and peptidases), the degree of protein peptide hydrolysis is greater than or equal to 38%, the proportion of 5-6 peptides is greater than or equal to 90%, the retention rate of cordycepin is greater than or equal to 92%, and the bioavailability is increased by more than 35%; meanwhile, enzyme preparation recycling, residue resourceization and process cost reduction by more than 25% are realized. The protein peptide can be widely applied in the fields of functional food, feed additive and cosmetic raw material, and has economic value and environmental protection benefit.

This invention relates to the field of waste heat recovery technology in sintering of iron and steel metallurgy, and discloses a three-stage waste heat recovery system for sintering ring coolers. The system includes a sintering ring cooler body, a recovery boiler, and a protective shell. The sintering ring cooler body is composed of multiple sections. A conveying pipe is installed on the third section of the sintering ring cooler body, with the other end of the conveying pipe connected to the recovery boiler. An installation pipe is installed at the bottom of the recovery boiler, with the other end of the installation pipe connected to the protective shell. This invention forms a complete closed-loop circulating gas path. The waste gas from the three stages of the sintering ring cooler body continuously enters the recovery boiler through the conveying pipe to complete waste heat recovery. After heat exchange, the waste gas is filtered, recirculated, and then reintroduced into the equipment. There is no waste gas discharge throughout the entire process. This maximizes the utilization of the waste heat resources of the three stages of the sintering ring cooler, improves energy efficiency, achieves zero emissions of flue gas from all three stages, and eliminates waste gas pollution. Simultaneously, the coordinated operation of all components ensures the long-term stable and efficient operation of the system.