CN1057673A

CN1057673A - Preservation process of activated sludge

Info

Publication number: CN1057673A
Application number: CN 90104329
Authority: CN
Inventors: 宋学海
Original assignee: Individual
Current assignee: Individual
Priority date: 1990-06-23
Filing date: 1990-06-23
Publication date: 1992-01-08

Abstract

Preservation process of activated sludge, a kind of microbial preservation technique can be preserved active sludge in large quantities, chronically.The present invention carries out decontamination to active sludge, and dosing mixes, and technological methods such as can are placed in the pond or in the air and preserve after handling, and reserve capacity generally can reach 1.2M ³, also can preserve the active sludge of specific quantity according to actual needs.

Description

Preservation process of activated sludge

Preservation process of activated sludge, a kind of microbial preservation technique.

At present, in scientific experiment such as biotechnology with microorganism is had in the industrial production of particular requirement, microorganism is required not pollute, do not make a variation; To the preservation of active sludge, regular transplanting culture method is arranged, continuous culture method, lyophilize preservation method, distilled water suspension preservation method, and technological method such as buffered soln suspension preservation method.The method that adopts in the practical application generally all needs specific installation, preserves container and adopts test tube, and reserve capacity is less.Also there is reserve capacity bigger, as beer production dull season, when brew-house does not have sewage disposal, just need to preserve active sludge to produce needs after guaranteeing, what its preservation method adopted is continuous culture method, promptly constantly add nutriment, the same aeration that carries out is handled during with production run, makes human and material resources, financial resources consumption bigger like this.The present invention is improved existing buffered soln preservation method, adopts porous medium absorption stabilization method, and after active sludge carried out pre-treatment, makes active sludge obtain for a long time, preserve in large quantities.

Purpose of the present invention is to create and a kind ofly preserves active sludge in large quantities, chronically and other has a kind of industrial application technological method of preserving the bacterial classification that requires.

Technical process of the present invention is as follows: earlier the impurity of microorganism absorption in the active sludge is removed; Preparation contains the solution of following material then,

CaCl ₂20-410 mg/L，

NaCl 50-20000 mg/L，

K ₂HPO ₄0-920 mg/L，

KH ₂PO ₄0-720 mg/L，

Na ₂HPO ₄0-760 mg/L，

MgSO ₄50-241.5 mg/L;

Then will remove the mud of impurity and add in the salts solution for preparing, making sludge concentration is 2%-6%, and fully stirs; At last saliferous mud is poured in the porous support material of sponge kind into, be placed in container or the air.The sludge carrier of this sponge kind porous mass, its aperture requires at 0.1-2mm, and is connected between the Kong Yukong, and between preservation period, porous mass hole planted agent is full of water medium.

The present invention preserves active sludge, and maximum duration can reach more than 1 year; Use method of the present invention not need Special Equipment, method is simple and practical, and is manually actuated; The present invention is strong to environmental adaptability; Can place the container of moisture medium during preservation, also can place air, preserving type is decided on shelf time length; The porous carrier materials that the present invention uses is easy to get, and volume can be cut apart change, takes mud conveniently, can preserve active sludge in a large number, and necessary expense is lower.

Description of drawings of the present invention: this is a process flow sheet of the present invention, and the first step is the impurity of removing in the active sludge; Second step was the saline solns that mud is preserved in preparation; The 3rd step was saline solution that will prepare and the mud of cleaning, and be mixed in proportion, and fully stirring made evenly; The 4th step was that the saliferous mud that mixes is irritated in the porous material carrier, placed the container or the air of water medium.

Embodiment: from handling the active sludge 1m after sedimentation is got in the field ³, add low chlorine tap water or distilled water 1m ³Fully agitator treating leaches washing water through sedimentation then, and repetitive scrubbing (general 4 times) reaches below the 5mg/L up to the washing water BOD that leaches and gets final product, and afterwards, mud 1m was got in sedimentation in 1 hour ³Stand-by, note not getting the impurity that is deposited in the mud sump bottom when getting mud; In addition, at 0.1m ³Low chlorine water in add NaCl 21.6kg, K ₂HPO ₄0.138kg, KH ₂PO ₄0.108kg, Na ₂HPO ₄0.114kg, MgSO ₄0.096kg, CaCl ₂, 0.24kg stirs it is dissolved fully; Above mixed salts solution is added to cleans the back and take out in the stand-by active sludge, and stir to make and mix, mix and add an amount of water in the process again and make the saliferous sludge concentration reach 4.5%; At last, the saliferous mud with 4.5% is poured in the cavernous body that the aperture is 1mm, is placed in the pond of low chlorine water to preserve, and reserve capacity is 1.2M ³

Claims

1, preservation process of activated sludge, particularly a kind of by decontamination, dosing mixes, and the preservation process of activated sludge that technological methods such as can are formed is characterized in that:

One, the active sludge that need are preserved must wash decontamination, removes the impurity of mud sump bottom when taking;

When two, preparing saline solns, add Mg salt, Ca salt as conditioning agent;

Three, the saliferous mud can after the mixing and stirring is preserved in cavernous body class porous mass carrier.