Method for short-range denitrification biological treatment of high-salt wastewater

A high-salt wastewater and biological treatment technology, applied in the field of sewage treatment and environmental protection, can solve the problems of long start-up period and unstable engineering application, and achieve the effect of reducing treatment costs, reducing sewage treatment costs, and reducing volume

Active Publication Date: 2013-03-27
北京中汉汇德环境科技有限公司
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Problems solved by technology

At the same time, further reduce the treatment cost, and overcome the problems of long start-up period and instability of the freshwater microbial salinity acclimation method that seriously restrict the engineering application

Method used

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  • Method for short-range denitrification biological treatment of high-salt wastewater
  • Method for short-range denitrification biological treatment of high-salt wastewater
  • Method for short-range denitrification biological treatment of high-salt wastewater

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Embodiment 1

[0040] The method for carrying out short-range denitrification biological treatment of high-salt wastewater by using the above-mentioned device mainly includes the following implementation steps:

[0041] Step 1: Inoculate the sludge in the SBR reactor 4 with the sludge from a river estuary in Qinhuangdao City, Hebei Province in autumn to ensure that the volatile solid concentration in the SBR reactor 4 is 1000 mg / L. The mud extraction section is 500 meters away from the sea estuary, and the salinity of the river water is 0.5%;

[0042] Step 2. Wash the sludge after inoculation to remove most of the sand and gravel in the bottom sludge until the solid concentration is 4000 mg / L; settle for 40 minutes until the sludge is completely settled and the mud-water interface is stable. Open the drain valve 6 and discharge the supernatant . The specific method is: the SBR reactor 4 inoculated with river bottom mud is filled with clear water. Turn on the agitator 15, and adjust the rot...

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Abstract

The invention discloses a set of device and method capable of quickly constructing and maintaining short-range denitrification biological treatment of high-salt wastewater. A biological sequencing batch reactor (SBR) is used as a main body in the device, and the device runs in an intermittent manner. The method for the short-range denitrification biological treatment of the high salt wastewater comprises the steps: the collected bottom sludge from a river or sea port is inoculated in the device, and a halophilic short-range denitrification biological treatment system can be quickly constructed after domestic sewage with salt content of 2.8 to 3.3 percent is used as raw water for continuous operation for 20 to 40 cycles. The constructed halophilic short-range denitrification system can stably and efficiently treat the high-salt wastewater with salt content of 2 to 10 percent. The biological denitrification treatment of the high-salt wastewater can be realized under the condition that desalting and salinity dilution are not performed. The problem that a fresh water microbial salinity acclimation method seriously restricts the engineering application due to long starting period, instability and the like is solved. Meanwhile, because stable short-range denitrification is realized, the treatment cost is further reduced; and on the premise of ensuring the quality safety and the stability of the yielding water, the treatment efficiency is improved, and operating energy consumption and expense are decreased.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment and environmental protection, and in particular relates to a set of technologies and devices for the rapid construction and stable maintenance of a high-salt wastewater short-range denitrification biological treatment system, especially a set of technologies and devices for directly using estuary sediments directly into the sea in the actual sewage treatment process A technology and device for quickly and efficiently constructing a short-range denitrification biological system for high-salt wastewater and realizing short-range denitrification of high-salt wastewater. Background technique [0002] Saline wastewater is widely produced in many industrial practices such as chemical industry, pharmaceuticals, tanning, oil extraction, food, fishery, seafood processing, shipping, and seawater substitution. The salinity of most of these wastewaters is in the range of 2%-10%, which is called hyper...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/30
Inventor 崔有为丁洁然彭永臻
Owner 北京中汉汇德环境科技有限公司
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