CN1686859A - Specific biologic enzyme for waterwater treatment - Google Patents

Abstract

The present invention is mainly used for treating waste water produced by olyeing and printing production and organic production waste water produced in the natural gas treatment process, and can implement recovery and reutilization of effective resource in production waste water. It is characterized by adding special biological enzyme in the existent treatment process so as to raise bioconvertibity of waste water, and the discharged water can reach discharge standard of GB8978-1996.

Description

Specific biologic enzyme for waterwater treatment

Specific biologic enzyme for waterwater treatment brainstorm project technical field: Industrial Wastewater Treatment such as printing and dyeing, gas production

Specific biologic enzyme for waterwater treatment brainstorm project technical background:

Dyeing factory effluent and gas conditioning factory effluent are the bigger trade effluent of domestic intractability, under the at present domestic situation that rationally reaches feasibility in Technological Economy, general water outlet after treatment can only reach the industry secondary standard, bring pollution to physical environment, this project research topic is to add special biological enzyme in to traditional waste water treatment process, katalysis by special biological enzyme, make the waste water after the processing reach the industry first discharge standard, and in operational process, reduce running cost and working strength, reduce pollution physical environment.Handling waste water later must not directly drink.

In the patent of invention retrieval following invention is arranged: (seeing Appendix)

1, circulation system at hot does not stop and cleans prefilming agent and clean prefilming method

2, the treatment process and the device thereof that contain pollutents such as of animal or plant nature waste oil

3, combined treatment process under the background of circulating water leakage and treatment facility thereof

4, the micro-control biological enzyme type kitchen tools cabinet of keeping a public place clean

5, bioenzyme picture-dismounting liquid and take off the method for mounting

6, a kind of method that improves the catalase storage stability of microbial method preparation

7, textile auxiliary agent, preparation method and the purposes of the biochemical pre-treatment of a kind of cellulosic fibre and BLENDED FABRIC thereof

8, a kind of enzyme activation prepares alkali soluble fibre element method

9, utilize the biological enzymolysis way to produce paper pulp

10, all cotton woven fabric biological enzyme pad continuously, the decatize pre-treating technology

11, the continuous destarch of a kind of all cotton woven fabric biological enzyme, concise-bath method pre-treating technology

12, all cotton woven fabric amylase, polygalacturonase, proteolytic enzyme pad-the steam method pre-treating technology continuously

13, the using method of biological cleanser in circulating water system

14, timber finishing material biological enzyme pre-treating process

15, use the production method of hemp yarn and natural colorful cotton yarn interlace stitch woven garment

16, a kind of skin care towel and manufacture method

17, cotton and BLENDED FABRIC thereof printing and dyeing pre-treatment-bathe the method continuous production processes

18, a kind of cotton or wash/cotton fabrics biological enzyme pads-the steam method pre-treating technology continuously

19, a kind of cotton or wash/cotton fabrics oxidation dipping interrupter method pre-treating technology

20, a kind of without phosphorus fabric detergent with sequential quadruple detersive power

21, the preparation of water-based biological enzyme newsprinting paper deinking agent

22, a kind of method for disinfection and sterilization of apparatus and cleaning and sterilizing sterilizing device thereof

23, native cellulose fibre pretreating biological enzyme process

Specific biologic enzyme for waterwater treatment brainstorm project summary of the invention:

In the last few years along with the development of chemical ﹠ blended fabric, the progress of the rise of emulation silk and printing and dyeing finishing technique, dye species also develops towards anti-photodissociation, oxidation resistant direction on function in increasing, thereby the treatment of dyeing wastewater difficulty is strengthened.Regular meeting uses and contains water-soluble dye in the printing and dyeing production process, as reactive dyestuffs, and matching stain etc., thus make the waste water that produces in the production process be difficult to use sophisticated waste water treatment process commonly used at present to remove.

Can inject high-enriched organics in the production process of gas conditioning as frostproofer (as ethylene glycol), and the high more antifreezing effect that frostproofer injects in the production treating processes is strong more.Gas-processing plant normally adopts antifreeze concentration to regulate antifreeze temperature.Produce in the whole technology in gas-processing plant, frostproofer will reclaim, but a lot of gas-processing plants of China are indifferent to the recovery of frostproofer at present, cause a part of frostproofer to enter the factory effluent system, and the biochemical process that the production wastewater treatment system of gas-processing plant adopts usually is difficult to frostproofer is effectively handled.

More than the production of two industries do not have the condition that tissue effluxed and entered the urban sewage system.Present technique is to adopt in the existing treatment process of industry, adds the obligate biological enzyme, increases the biodegradability of waste water, meets the requirements of the processing standard

The essence of obligate biological enzyme is in for some time, by certain technological means, makes the biochemical system generation and accumulates a certain amount of microorganism, and microorganism is being separated, and purifying is observed, and after the evaluation classification, adds in the waste water treatment process, allows it bring into play benefit.

Continous way and intermittent type are mainly adopted in the cultivation of obligate biological enzyme

Continous way is cultivated: it is in continuous water inlet that continous way is cultivated, and carries out the training method of wastewater treatment biological enzyme under the situation of continuous effluent.The condition of selecting this kind training method is that enough water inlets will be arranged, and promptly flooding quantity should satisfy 24 hours quantity of intake pump, and the advantage that continous way is cultivated is that incubation time is short, and the needed domestication time of biological enzyme is short.

Intermittent type is cultivated: it is by water inlet, aeration, precipitation that intermittent type is cultivated, the training method of getting rid of four-stage reciprocation cycle such as supernatant liquor, be at flooding quantity less than satisfying a kind of training method of carrying out continuously, be characterized in that the biological enzyme accumulation cycle is long, the domestication time is long, and the operation element amount is big.

The operating method of this biological culture:

Fs:

1, special waste water is caused biological enzyme and cultivate in the facility, and be diluted to finite concentration.Refer generally to dilute the back COD value of waste water and be no more than 500mg/L.

2, start oxygen replenishing equipment, carry out 24 hours vexed exposing to the sun.

3,, add suitable nutritive substance (glucose and urea) according to the sewage nutrition-allocated proportion.

4, above-mentioned water inlet and nutrition-allocated proportion end-of-job, the vexed 1 hour water sampling that exposes to the sun, chemical examination COD, the settling ratio microscopy, this inoculation aeration soak time needs 4-5 days altogether, if microscopy biophase activity, settling ratio＞5% can be introduced special waste water and carry out cultivation, domestication.

Subordinate phase:

Adopt the method that progressively increases sewage quantity to train enzyme and domestication work, this stage is interrupted inlet method, and every water inlet half a day once, changing volume of water progressively increases by 1/4～1/3.Concrete steps are as follows:

1, stops oxygenation 30min, change the water operation, change volume of water and begin by 1/4 volume.

2, change the water EP (end of program) after, the beginning oxygenation repeats to change water conservancy project and does after 12 hours.

3, suitably increased sewage volume or shortening exchange water cycle every 1～2 day.

4, when changing volume of water when increasing to 5/6, observe the microbial enzyme growing state, when facility feed-water end microbial film that filler is hung is tawny, it is orange-yellow that the water side is, and illustrates then that microbial film has been cultivated to finish.Observe the water outlet situation, further adjust flooding velocity, and progressively adopt continuous water intake mode.

5, detect the COD clearance, if clearance reaches 60% or more and can intake continuously, the above stage approximately need finished in about 15～20 days.

Clearance feelings according to COD are anti-, and can take the circumstances into consideration to consider nutritive props again, the general C of trophic structure: N: P is 100: 5: 1.

After water outlet COD clearance satisfied design requirement, biological bacteria can be regarded the fixed point domestication as and be finished (biological enzyme is cultivated and finished).Purpose to the biological enzyme domestication is to select to adapt to the microorganism of the above actual water quality situation of two industries, eliminates useless microorganism, to high concentrated organic wastewater, the treatment process of removing powerful oxidation agent low toxicity material function is arranged, and by domestication, makes biological enzyme form dominant microflora.

The concrete operations method is the normal operation that at first keeps technology, then, strict control waste water treatment process parameter, should be controlled at below the 0.1mg/L at anaerobic state, should be controlled at below the 0.5mg/L in anoxic condition, should be controlled at 2-3mg/L at good oxygen condition, the keeping time of good oxygen condition is not less than 5 hours, external reflux ratio 50%-100%, internal reflux ratio 200%-300%, and, got rid of the excess sludge of producing sludge quantity 30%-50% in per 24 hours, in this process, test the water outlet water-quality guideline every day, reach requirement up to the every index of water outlet.

Biological enzyme add determining of controlled variable:

At the parameter in the Waste Water Treatment design of dyeing and gas conditioning factory, determine the controlled variable that suitable biological enzyme adds with waste water quality, the water yield of actual motion, to guarantee normally carrying out and cutting down the consumption of energy when making the water outlet water quality reaching standard of operation.

1. content of parameter:

That need to determine importantly adds water level, the water yield, the water quality that parameter has the Waste Water Treatment water inlet, bio-reactor dissolved oxygen redox potential ORP, return sludge ratio R, sludge concentration MLSS, sludge settling ratio SV%, sludge index SVI, sludge age SRT, excess sludge discharge cycle and day quantity discharged, precipitating sludge height etc., the principal element that wherein influences biological enzyme is dissolved oxygen and sludge age SRT.

2. determine method

The water level and the water yield are to control definitely by water pump, and bio-reactor is controlled definite by DO and ORP, and the DO of anaerobic state is less than 0.1mg/L generally speaking, and the DO of anoxic condition is less than 0.5mg/L, and the DO of good oxygen condition is between 2-3mg/L.The OPR of anaerobic state is less than-250MV, and the ORP of anoxic condition is about-100MV, and good oxygen condition ORP is greater than 40MV.The size of reflux ratio R is to determine according to the residence time of mud, more suitable about 50%-100% generally speaking, sludge concentration MLSS determines by sludge loading, general sludge loading is proper in 0.12KgBOD5/ (KgMLSS*d) left and right sides, sludge age SRT will consider waste water treatment process design requirements in water quality, and it generally was controlled at about 25-30 days.

The present technique biological enzyme has individual minimum, and breeding is fast, is difficult for characteristics such as variation.This biological enzyme is dropped in the production wastewater treatment technology of above two industries, can fully contact with the high concentration organic contaminant in entering Waste Water Treatment, can utilize material or the energy derive of pollutent as oneself, make it to be converted into material type environmentally friendly or that character is comparatively stable, thereby reach the purification purpose.

(2) discuss the project innovative point, comprise technological innovation, product structure innovation, production technique innovation, the noticeable change of the performance result of use of product etc., the attached photo sample of the testimonial material existing procucts of the project that furnishes an explanation state of the art or sample.

1. this project technology biological enzyme cultivation of at printing and dyeing treatment industry factory effluent and gas conditioning factory production waste water, extracting, after carrying out the purifying screening, it is little to have volume, breeding is fast, be difficult for morphing, and have characteristics such as inter-trade application, microorganism in the different normal waste water treatment process now is as photosynthetic bacterium, the fiber separation bacterium, peculiar type bacterium etc.

2. the production technique of biological enzyme is different from the production of other bacterium, and presses following program:

Extent of dilution selection → the diluted medium of diluted medium meets the requirements of extent of dilution → pour plate and cultivates that (selecting culture condition such as illumination, oxygen etc. according to special flora essential characteristic) → row gets single bacterium colony 2-3 (according to special flora feature selection) → method of scoring purifying (dyeing, micro-degree observation etc. are to determine purity) → put down in writing the bacterium feature and ne ar → switching inclined-plane is stand-by

3. biological enzyme has significant effect to using in above printing and dyeing process for producing waste water and the gas-processing plant's production wastewater treatment technology

Water outlet after gas-processing plant's production wastewater treatment reaches comprehensive discharge standard GB8978-1996 primary standard, and specific targets are as follows:

CODcr≤100mg/L

BOD5≤20mg/L

SS≤50mg/L

PH＜6-9

Petroleum-type≤10mg/L

Water outlet and integrated wastewater discharge standard GB8978-1996 primary standard specific targets after the wastewater treatment of printing and dyeing arrangement industry production are as follows:

CODcr≤70-85mg/L

BOD5≤20mg/L

SS≤50mg/L

PH＜6-9

Colourity＜50

Claims (1)

1. Specific biologic enzyme for waterwater treatment brainstorm project technical field: Industrial Wastewater Treatment such as printing and dyeing, gas production

   Dyeing factory effluent and gas conditioning factory effluent are the bigger trade effluent of domestic intractability, under the at present domestic situation that rationally reaches feasibility in Technological Economy, general water outlet after treatment can only reach the industry secondary standard, bring pollution to physical environment, this project research topic is to add special biological enzyme in to traditional waste water treatment process, katalysis by special biological enzyme, make the waste water after the processing reach the industry first discharge standard, and in operational process, reduce running cost and working strength, minimizing is to the pollution of physical environment, this project technology is mainly used in the organic waster-water of handling in highly difficult waste-rwater produced by dye printing and the gas conditioning process, can realize the recycling of the efficient resource in the factory effluent, the pollution level of waste water is dropped to minimize.Be adapted at the nationwide and promote, economic benefit is considerable, and environmental benefit is good.