3 results about "Nitrate salts" patented technology

The invention discloses a method for rapidly removing nitrate in a water body by using biochar immobilized denitrifying bacteria. The preparation method comprises the following specific steps: firstly, screening high-efficiency denitrifying bacteria to obtain a strain of pseudomonas stutzeri N3; and co-culturing the bacterial suspension of N3 with biochar, carrying out adsorption immobilization, and cleaning with normal saline to obtain the biochar immobilized denitrifying bacteria. The biochar is used as a carrier for immobilizing denitrifying bacteria, so that the method has the advantages of wide material source, simplicity in preparation, low cost, good treatment effect and the like, and resource utilization of wastes is realized. The biochar is used for immobilizing denitrifying bacteria, it is found that the removal effect on nitrate after immobilization is significantly better than simple biochar adsorption and denitrifying bacteria degradation. The method is of great significance for the rapid removal of nitrate in water bodies.

The invention discloses an ultrahigh-filtering-speed IV-class water upgrading standard transformation nitrogen and phosphorus removal device and a treatment process thereof. The device is formed by sequentially connecting an inner water inlet pore plate grid, an ultrahigh-filtering-speed nitrogen removal biological filter, an ultrahigh-filtering-speed dense medium loading efficient flocculation clarification tank and a clean water tank in series. According to the invention, the problem that a filter head of a traditional aerobic nitrification biological filter is easy to block due to fibrous impurities is solved, the problems of blockage, low filtering speed, high treatment load and low treatment load of an upward flow denitrification biological filter are solved, and the treatment effectof the dense medium and dense medium loaded efficient flocculation clarification tank is obviously superior to that of a traditional combined treatment device and process; the traditional process problem of efficient nitrogen and phosphorus removal is solved, the sewage containing high nitrate and inorganic phosphate can be deeply upgraded, the effluent can reach the IV-class water standard, and the method has great popularization and application value for sewage upgrading.

The invention discloses a synchronous denitrification reactor. The synchronous denitrification reactor comprises a first order reaction chamber, a second order reaction chamber, a inlet water mixing chamber, a carbon source adding pipe, a mixing stirring device, a backwash water pipe, and a spherical filling material; the first order reaction chamber and the second order reaction chamber are connected in series; the first order reaction chamber comprises a first water preparation oxygen release chamber and a fist denitrification chamber; the second order reaction chamber comprises a second water preparation oxygen release chamber and a second denitrification chamber; the bottoms of the first denitrification chamber and the second denitrification chamber are designed to be tapered; the bottom of the first denitrification chamber is provided with a hole; the bottom of the second denitrification chamber is provided with a hole; the outside edge of each of the holes is covered with filling material blocking screen; and the spherical filling material is injected into the first denitrification chamber and the second denitrification chamber. According to the synchronous denitrification reactor, synchronous denitrification anoxic conditions are achieved in an aerobic tank or an anoxic pool via insulation, biomembrane loaded with the spherical filling material is used for reaction of nitrates and nitrites in backflow sewage with the added carbon source, and generated nitrogen overflow, so that denitrification is realized.