4results about How to "Increase total nitrogen" patented technology

The utility model provides a kind of wastewater treatment system of reinforced AOA-MBBR process stable operation, including secondary sedimentation tank, the periphery of secondary sedimentation tank is sequentially provided with anaerobic tank, first MBBR aerobic tank, second MBBR aerobic tank, first anoxic tank, second anoxic tank, filter tank;First and second MBBR aerobic tank are equipped with several combined suspended fillers, the outlet of two MBBR aerobic tanks is installed with cylindrical screen, and float ball liquid level meter, aerator are installed in the pool, online dissolved oxygen instrument and ammonia nitrogen on-line monitor are installed in second MBBR aerobic tank, float ball liquid level meter, online dissolved oxygen instrument and ammonia nitrogen on-line monitor are respectively covered with a protective cover outside.AOA-MBBR process is formed by coupling MBBR process and AOA process, wastewater is treated by anaerobic, aerobic, anoxic alternation state, improves total nitrogen and total phosphorus removal rate biological treatment, maximally utilizes raw water organic matter and internal carbon source to achieve the purpose of strengthening biological denitrification and phosphorus removal.

The application discloses a kind of organic water-soluble fertilizer special for tea tree and a preparation method thereof, and belongs to the technical field of fertilizer production, comprising the following components by mass fraction: tea dregs 45-60 parts, dry tea tree branches and leaves 20-40 parts, soybean meal 10-15 parts, molasses 5-10 parts, humic acid 5-15 parts, compound microbial inoculum 1-3 parts, compound enzyme preparation 0.5-1 part, potassium dihydrogen phosphate 2-5 parts, magnesium sulfate 1-3 parts.The application of the organic water-soluble fertilizer of the application to tea trees can effectively improve the total nitrogen, total phosphorus, total potassium and organic matter in the soil, increase the pH value of the soil and improve the yield of tea leaves as well as the content of free amino acids, tea polyphenols and caffeine in the tea leaves.

This invention discloses a method for preparing functional compost, belonging to the field of agricultural waste resource utilization and grassland ecological restoration technology. The key technical points include: mixing fresh sheep manure, wheat straw, and corn straw at a specific wet weight ratio and adding superphosphate to obtain a basic mixture; inoculating this mixture with a compound microbial fermentation agent composed of *Bacillus steatophilus*, *Bacillus subtilis*, and *Bacillus mucilaginosus* at a specific viable count ratio to obtain an inoculum; subjecting the inoculum to aerobic composting fermentation and implementing dynamic turning control based on dual temperature thresholds to maintain the compost within a specific high-temperature range for a sufficient number of days; and finally, aging the material until its seed germination index reaches a specific range to obtain functional compost. The functional compost prepared by this method is mainly used for restoring degraded grazing grasslands.

The application discloses a coal gangue-based sandy soil modifier and application thereof, and belongs to the technical field of soil improvement. The modifier is composed of a basic component and a composite component, wherein the basic component is coal gangue, and the composite component is composed of straws and rotten leaves. The mass percentage of the basic component is 1-5%, and the mass ratio of the straws to the rotten leaves in the composite component is (1-4):(1-4). The modifier provided by the application can simultaneously, quickly and durably increase the contents of organic matter, total nitrogen and total phosphorus in sandy soil, significantly improve the problems of loose structure, poor water and fertilizer retention capacity and extreme nutrient deficiency of the sandy soil, and improve the soil fertility from an extremely low level to a high level, thereby effectively overcoming the problems of single effect, poor nutrient synergy, short duration and high cost of the existing modifier. The modifier is suitable for ecological restoration and fertility improvement of flowing sandy land, semi-fixed sandy land and sandy farmland.