30results about How to "Reduce nitrate nitrogen content" patented technology

The invention relates to a carbon-based fertilizer potentiating agent and application of the carbon-based fertilizer potentiating agent. The carbon-based fertilizer potentiating agent is characterized by comprising the raw materials in proportion by weight: 50-70 carbon powder, 5-15 humic acid, 2-5 inhibitors mixing urease inhibitor with nitrification inhibitor, 10-20 microelement fertilizer, and 5-10 acid bentonite or clay; biomass granule carbon is selected as a matrix carrier, the production process is simple, raw materials are easily obtained, and the cost is low. The biomass carbon has strong adsorbability, water retention property and light absorption warming property, and can be used as good ammonia stabilizer and soil conditioner except for the carrier. After being applied into soil, the potentiating agent can lead the fertilizer to slowly release, and can relieve the influence of drought and lacked water and low temperature on crop growth. The potentiating agent not only can improve the fertilizer utilization rate, but also is environment-friendly and safe, can effectively improve the utilization rate of nitrogenous fertilizer and phosphate fertilizer, reduce fertilizer loss, and simultaneously can lighten the water body pollution and greenhouse effect by nitrogenous fertilizer, reduce the content of nitrate nitrogen in agricultural products, and ensure the safety production of food.

The invention discloses a method for promoting the reduction of soil nitrate by an iron film at the root of rice. The iron film of the rice can strengthen the reduction of nitrate, and is coupled with the process of iron oxidation and reduction, thereby increasing N 2 The invention can enrich soil denitrifying microorganisms and iron redox microorganisms, and can enhance the nitrate reduction of crop microorganisms, and couple the redox of iron, thereby reducing the risk of nitrate leaching, and is a kind of original It is an environment-friendly method under bit conditions, and has strong practical operability.

The invention relates to the technical field of rural sewage treatment equipment, in particular to a kitchen sewage treatment device. The device includes a sewage collection well and a reaction pool arranged around the sewage collection well. The bottom of the sewage collection well and the side walls of the sewage collection well are all impermeable structures. The reaction pool is sequentially provided with fine sand layers, The geotextile and gravel layer, and the fine sand layer are planted with moisture-resistant herb plants. The bottom of the reaction tank and the side wall of the reaction tank are all impermeable structures; The side wall and the position of the fine sand layer are provided with a second permeable hole. The second permeable hole is higher than the first permeable hole, prolonging the residence time of the kitchen sewage in the reaction tank, and enhancing the fine sand and moisture-resistant herb root system against the sewage. The adsorption and absorption effect of pollutants can denitrify as much sewage as possible, reduce the nitrate nitrogen content of sewage, realize centralized and effective treatment of kitchen sewage, and reduce the pollution of kitchen sewage to the environment.