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An integrated device and method for removing sulfate, nitrite and organic matter in wastewater

A nitrite and sulfate technology, which is applied in biological treatment devices, chemical instruments and methods, water pollutants, etc., can solve the problems of poor process stability, large floor space, and high treatment costs, so as to improve productivity and occupy more space. The effect of small ground area and large transmission flux

Active Publication Date: 2022-05-13
DALIAN MARITIME UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of the existing waste water denitrification and sulfur removal process with complicated steps, large floor area, poor process stability and high treatment cost, the present invention provides an integrated removal device and method for sulfate, nitrite and organic matter, using The synergistic effect of sulfate-reducing bacteria and concurrent desulfurization and denitrification bacteria achieves the purpose of efficient simultaneous removal of nitrogen, sulfur and carbon pollutants without secondary pollution

Method used

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  • An integrated device and method for removing sulfate, nitrite and organic matter in wastewater
  • An integrated device and method for removing sulfate, nitrite and organic matter in wastewater
  • An integrated device and method for removing sulfate, nitrite and organic matter in wastewater

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Embodiment 1

[0049] The following non-limiting examples can enable those skilled in the art to understand the present invention more fully, but do not limit the present invention in any way.

[0050] Such as figure 1 As shown, an integrated removal device for sulfate, nitrite and organic matter is an upflow suspended sludge anaerobic reactor, from bottom to top there are water inlet 1, reactor 2 and three-phase separation 3, the water inlet and the reactor and between the reactor and the three-phase separator are connected by a flange structure 5; Sludge supplement port Ⅰ7, sludge supplement port Ⅱ17, sludge supplement port Ⅲ18, all three sludge supplement ports are equipped with valves, with an inner diameter of 1.0cm;

[0051] The three-phase separator includes a gas collecting hood 11, an exhaust valve 13, a sludge settling unit 10, a water outlet 12, and an inspection port 14; the gas collecting hood and the sludge settling unit are set up and down opposite to each other; The upper p...

Embodiment 2

[0062] Such as figure 1 As shown, the device described in Example 1 is used, the temperature of the reactor is controlled at 35°C, the angle between the water distribution plate and the inner wall of the water inlet is 45°, and the center point of the water distribution plate is taken as the center of the circle, outside the circular range with a diameter of 0.7cm There is a water hole, and the diameter of the water hole gradually increases along the center to the edge according to three levels, which are 0.3cm, 0.6cm, and 1.0cm; the ratio of reactor height to diameter is 20:1; the volume of the reactor and the three-phase The volume ratio of the separator is 3.3:1; the ratio of the height of the reactor to the height of the three-phase separator is 8:2. The ratio of the lower cross-sectional diameter D1 to the upper cross-sectional diameter D2 of the sludge settling unit of the three-phase separator is 3:8, and the ratio of the upper cross-sectional diameter D4 to the lower c...

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Abstract

The invention relates to a device and method for synchronously removing sulfate, nitrite and organic matter in waste water. The device consists of water inlet, reactor and three-phase separator from bottom to top. The three-phase separator includes gas collecting hood, sludge settling unit, exhaust valve, water outlet and inspection port; one end of the reactor is connected with a water distribution plate and The water inlet is connected, and the other end is connected with the sludge settling unit; the water distribution plate takes the center point as the center of the circle, and a water hole is arranged outside the circular range with a diameter of 0.5-1.5cm; the height-to-diameter ratio of the reactor is 14: 1‑26:1; the volume ratio of the reactor volume to the three-phase separator is 3:1‑3.5:1; the ratio of the height of the reactor to the height of the three-phase separator is 7:3‑8:2. The invention realizes the spatial separation of functional bacteria through the height-to-diameter ratio, water distribution plate and segmental domestication, so that multiple pollutants can be removed synchronously in one reactor; and no filler is added in the reaction zone, which ensures the efficient transmission of elemental sulfur particles , reduce secondary pollution.

Description

technical field [0001] The invention relates to a method for biological denitrification, desulfurization and carbon removal of wastewater, in particular to a device and method for synchronously removing sulfate, nitrite and organic matter. Background technique [0002] Antibiotic pharmaceutical industry, petrochemical industry, refinery and many other industries, due to the use of organic raw materials containing sulfur and nitrogen in the production process, will produce a large amount of sulfate SO 4 2- and nitrite NO 2 - The high-concentration organic wastewater and complex pollutants pose a great threat to the natural water environment. The oxidized inorganic nitrogen in wastewater is mainly nitrate NO 3 - and NO 2 - , with NO 3 - Compared to NO 2 - More threatening to human health and creatures in nature, NO 2 - After entering the human body, it can oxidize hemoglobin to methemoglobin, thereby destroying the oxygen transport capacity of hemoglobin and causi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/28C02F3/34C02F101/30C02F101/16C02F101/10
CPCC02F3/2846C02F3/2866C02F3/34C02F3/345C02F2101/30C02F2101/166C02F2101/101C02F2203/006C02F2209/20C02F2209/19C02F2209/06C02F2209/02C02F2209/44
Inventor 李巍梁霄
Owner DALIAN MARITIME UNIVERSITY
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