Method for starting bio-filter for processing high salt ammonia containing wastewater

A technology of biological filter and biological aerated filter, which is applied in the field of high-salt ammonia-containing wastewater biological filter, can solve the problems of easy collapse of sludge active system, slow growth of degrading bacteria, long start-up and acclimation period, etc., and achieve environmental protection The advantages of stress resistance, strong impact resistance, and the effect of rich microbial sources

Inactive Publication Date: 2018-12-04
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] (1) Most saline wastewater treatment processes are based on the ordinary activated sludge method or its combination design. High salinity leads to slow growth of degrading bacteria in the biochemical unit. Supplementing nutrients, biological additives or frequent replacement of activated sludge, and increasing SRT and HRT to maintain operational stability ([5] Liu Zheng. Discussion on biological treatment technology for high-salt wastewater [J]. Water supply and drainage, 2001,27(11):54-57; [6] Kang Qun, Ma Wenchen, Xu Jianmin, etc. Research on the Effect of High Salt Concentration on Biochemical Treatment of Industrial Wastewater [J]. Environmental Pollution Control Technology and Equipment, 2005, 6( 8):42-45);

Method used

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  • Method for starting bio-filter for processing high salt ammonia containing wastewater
  • Method for starting bio-filter for processing high salt ammonia containing wastewater
  • Method for starting bio-filter for processing high salt ammonia containing wastewater

Examples

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Effect test

Embodiment 1

[0030] Example 1: Start-up and domestication of mangrove sediment sludge to treat high-salt and ammonia-containing wastewater in a biological aerated filter filled with oyster shells

[0031] Mangrove sediment sludge start-up domestication of oyster shell filled biological aerated filter to treat high-salt ammonia-containing wastewater includes the following steps:

[0032] 1) Add mangrove sediment sludge (wet sludge) with a quality of 400-500g into the biological aerated filter filled with oyster shells;

[0033] 2) Take 1.0-1.5 kg of cleaned and dried oyster shells strung on the rope, spread them flat and hang them into the biological aerated filter filled with oyster shells to increase the contact between the oyster shells and the reaction solution area, and make the sludge microorganisms evenly distributed on the whole system, such as figure 1 shown;

[0034] 3) Take the prepared raw water and add the biological aerated filter filled with oyster shells to the overflow po...

Embodiment 2

[0052] Embodiment 2: Oyster shell inoculation with salt-tolerant biofilm starts the biological aerated filter filled with oyster shells to process high-salt ammonia-containing wastewater comprising the following steps:

[0053] 1) The biological aerated filter filled with oyster shells continued to operate stably until the 70th to 80th day after the successful domestication, and the oyster shells with salt-tolerant biofilm were taken out from the biological aerated filter filled with oyster shells, and drained according to the ratio of 1:3 The volume ratio is filled into the new oyster shell filler aerated biological filter together with the new oyster shell, and the domestication operation is started by continuously feeding high-salt ammonia-containing wastewater.

[0054] 2) Other operations are the same as steps 1) to 5) of Example 1.

[0055] Such as figure 2 As shown, according to the drainage volume ratio of oyster shells with salt-tolerant biofilms and new oyster shel...

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Abstract

The invention discloses a method for starting a bio-filter for processing high salt ammonia containing wastewater, and relates to the field of aeration bio-filters. According to the method, mangrove forest deposited wet sludge is added into an oyster shell filling material aeration bio-filter to obtain a mixed solution; then a cleaned and dried oyster shell filling material is added into the oyster shell filling material aeration bio-filter; raw water is added into the oyster shell filling material aeration bio-filter until raw water reaches an overflowing opening; the bio-filter is connectedto an aeration machine, which is operated in an intermittent enclosed aeration mode, thus the mangrove forest deposited sludge can fully adhere on the surface and inner holes of the oyster shells; after enclosed aeration, the bio-filter is connected to a raw water inlet pipe, water is continuously introduced into the bio-filter, continuous aeration is carried out; water samples and mud samples arecollected periodically; all indexes of the effluent of the bio-filter are measured, if the removal rate of NH4<+> and N is stably more than 80%, the bio-film culturing is success, and if the removalrate of NH4<+> and N is stably more than 90%, the bio-filter, which takes mangrove forest deposited sludge as the seed mud, is successfully trained and started.

Description

technical field [0001] The invention relates to an aerated biological filter, in particular to a method for starting an aerated biological filter using mangrove sediment sludge as seed mud, oyster shells as filler, and high-salt ammonia-containing wastewater as a treatment object, and its microbial phase. A start-up method for treating high-salt ammonia-containing wastewater biofilter composed of the present invention. Background technique [0002] In the field of industrial wastewater and domestic sewage, saline wastewater has become a type of sewage that is difficult to treat because of its special water quality condition - high salt content. One of the main sources of saline wastewater is as fresh water replacement water, such as power plant cooling water, seawater flushing and other purposes; the second is produced in petroleum, leather, paper, printing and dyeing, pickling, pharmaceutical processing, marine farming and processing The salt concentration of industrial wa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/02C02F101/16
CPCC02F3/02C02F2101/16Y02W10/10
Inventor 熊小京林天生左进曾坚
Owner XIAMEN UNIV
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