Anaerobic ammonia oxidation and aerobic oxygen limited starting method based on MBBR (Moving Bed Biofilm Reactor)

An anammox and ammonia nitrogen technology, which is applied in the field of anaerobic ammonium oxidation and aerobic limited start-up based on MBBR, can solve the problems of high processing load, long start-up period, short start-up period, etc., and achieves high processing load and start-up speed. Fast, reliable results

Active Publication Date: 2015-04-01
QINGDAO SPRING WATER TREATMENT
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problems in the prior art that MBBR anaerobic ammonium oxidation is not easy to hang film, difficult to start, and long start-up period, the present invention proposes an anaerobic start-up method based on MBBR. The MBBR pretreatment method has the advantages of hanging The advantages of fast membrane speed, good fluidization performance, short start-up period, high processing load, etc.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Anaerobic ammonia oxidation and aerobic oxygen limited starting method based on MBBR (Moving Bed Biofilm Reactor)
  • Anaerobic ammonia oxidation and aerobic oxygen limited starting method based on MBBR (Moving Bed Biofilm Reactor)
  • Anaerobic ammonia oxidation and aerobic oxygen limited starting method based on MBBR (Moving Bed Biofilm Reactor)

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Step 1: The specific surface area of ​​the suspended filler used in the MBBR process is ≥500m 2 / m 3 , the specific gravity is 0.95, the diameter is 25cm, the thickness is 10cm, and the reactor volume is 5m 3 , add suspended filler 2.50m 3 , filling rate is 50%;

[0031]Step 2: Anammox bacteria are not easy to form film on the filler, but nitrifying bacteria are easy to form film, and nitrifying bacteria are one of the sources of anammox bacteria, so start nitrification first. Nitrification start, the nitrification start is carried out when the water temperature is 20.1-20.4°C, the activated sludge in the aeration tank of the sewage treatment plant is inoculated, the sludge concentration in the reactor after inoculation is 3.88g / L, and the ammonia nitrogen removal load of the reactor is 0.056kgN / kgMLSS / d; put the inoculated sludge into the reactor and fully mix it with the biological filler, and run it intermittently. The concentration of ammonia nitrogen in the inf...

Embodiment 2

[0036] In order to verify the operation of MBBR-ANAMMOX under high ammonia nitrogen conditions, the total nitrogen membrane surface load reached 7.98gN / m in Example 1 until 214 days 2 / d, at this time the volume load is 1.99kgN / m 3 / d, after the system has matured and stabilized, continue the anaerobic operation, the anaerobic stirring power is 13W / m 3 , control influent ammonia nitrogen 270-275mg / L, influent nitrite nitrogen 315-330mg / L, influent pH 7.3-7.9, after 90 days the working condition of the reactor tends to be stable, and the total nitrogen membrane surface load reaches 20.83gN / m 2 / d, at this time the volumetric load is 5.21kgN / m 3 / d, the increase in load is more conducive to anammox due to high ammonia nitrogen.

[0037] From figure 1 , figure 2 , image 3 It can be seen that: the change of nitrogen during the whole anammox start-up process;

[0038] Figure 4 : The characteristic stoichiometric coefficient of the anammox reaction refers to the ratio of...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
diameteraaaaaaaaaa
porosityaaaaaaaaaa
Login to View More

Abstract

The invention discloses an anaerobic ammonia oxidation and aerobic oxygen limited starting method based on an MBBR (Moving Bed Biofilm Reactor), belonging to the field of sewage treatment. By adopting an MBBR process for starting an anaerobic ammonia oxidation process, the starting method aiming at solving the problems that in the process of starting the anaerobic ammonia oxidation by using an activated sludge process in the prior art, sludge is easy to float upwards with generated gas and run away, a film is not easily hung on the microorganisms, the microorganisms are difficult to enrich and easy to jam after long-time running in the process of starting the anaerobic ammonia oxidation by using a biofilm method, and the previous methods are low in starting speed, and relatively difficult to realize engineering application. The technical scheme disclosed by the invention comprises nitrification starting, aerobic starting, and anaerobic ammonia oxidation running, only ordinary activated sludge is inoculated, a significant anaerobic ammonia oxidation effect can occur after 120-150d, and finally the total nitrogen film surface load reaches above 7.9gN / m<2> / d. The process disclosed by the invention is high in starting speed, high in biofilm activity, and reliable in running, and the total nitrogen removal is efficient, stable and low-carbon.

Description

technical field [0001] The invention belongs to the field of sewage treatment, and in particular relates to an MBBR-based anaerobic ammonium oxidation aerobic oxygen-limited starting method. Background technique [0002] The nitrogen cycle exists in nature and is kept in balance. In recent years, due to man-made reasons, the nitrogen cycle has been destroyed, leading to the accumulation of intermediate products, resulting in increasingly serious eutrophication of water bodies. Lake "blooms" and offshore "red tides" have occurred from time to time and are becoming more and more severe. Eutrophication of water bodies has endangered agriculture, fishery, tourism and many other industries, and poses a huge threat to drinking water sanitation and food safety. Therefore, nitrogen removal has become an important topic in wastewater treatment. In the last century, based on nitrification and denitrification, the technical system of wastewater biological denitrification has played a...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & AuthorityPatents(China)
IPC IPC(8): C02F3/30C02F3/28
Inventor吴迪宋美芹王江宽刘曙于振滨
OwnerQINGDAO SPRING WATER TREATMENT