CN106338216A - Operation specification for cleaning and disinfecting air-conditioner cooling tower - Google Patents

Abstract

The invention relates to an operation specification for cleaning and disinfecting an air-conditioner cooling tower. The operation specification is characterized by including the following steps that 1, field investigation and preparation are performed, specifically, field investigation of normal running states of the cooling tower is performed, the actual situation is analyzed, and then an individualized operation scheme is worked out; an investigator needs to prepare personal protection very well, like wearing a mask and a pair of goggles; and key points of field investigation lie in that (1) dirt, algae and corrosion degrees of a water distributor, a filler, a tower tray (water collecting tray) and a backwater filtering net are investigated, (2) the investigator needs to know the situation of water replenishment of the cooling tower, (3) whether a water replenishing valve and a sewage discharge valve are intact or leak water or not is checked, (4) the investigator needs to know the corrosion degree of a support of the cooling tower, (5) whether an exhaust outlet is aligned to the cooling tower or not is checked, for oily fume increases the cleaning difficulty, and (6) an investigation report or advices are written, a plan is worked out, and suitable cleaning and disinfection agents, tools and equipment are prepared.

Description

A kind of rule of operation of air conditioner cooling tower cleaning and sterilizing

Technical field

A kind of rule of operation of air conditioner cooling tower cleaning and sterilizing, is that Cooling Tower for Air conditioning System and cooling tower water are carried out Sterilization technical specification to be observed, belongs to air conditioner cooling tower cleaning and sterilizing technical field.

Background technology

It build outdoor more cooling tower in, have sunlight and the sunshine of abundance, communicate with air and allow cooling water to adsorb air In various pollutant, continual make-up water can bring new nutrient, continually with the nutrient in multiple sources so that In cooling tower, algae and microorganism particularly pathogenic microorganism (as legionella) amount reproduction, become the potential pollution source of disease； The ws 394-2012 " public place centralized air ventilation system hygienic practice " that Ministry of Public Health is promulgated requires open to central air conditioning No less than once, the cooling tower water after cleaning must not detect legionella pneumophilia to the annual cleaning of cooling tower, and promulgates matched Ws 396-2012 " public place centralized air ventilation system cleaning code " instructs the cleaning of air conditioning system；This cleaning code makes Used time suffers from the drawback thatBecause lacking detailed, feasible rule of operation, the current Chinese society wiper mechanism good and the bad is not Together, operation is lack of standardization, and particularly present wiper mechanism does not need the cleaning qualification obtaining correlation can obtain employment, and leads to clean Journey becomes a mere formality；Effective percentage concentration when specification does not have strict restriction to sterilize and continuous disinfection time are so that Disinfection Effect Often it is extremely difficult to expect, in real work, find that the air conditioner cooling tower after part cleaning remains to detect legionella pneumophilia；(3) advise Model failed call is carried out the pre-filming treatment after sterilizing, and the pre- film in surface can stop and disperses various incrustation ion foulings, reaches To anti-corrosion, antiscale with prevent the purpose that microorganism (particularly legionella) grows.

Content of the invention

The purpose of the invention is to provide a kind of science, effective, feasible air conditioner cooling tower cleaning and sterilizing rule of operation, Make up the uncertainty of ws 396-2012 " public place centralized air ventilation system cleaning code " it is ensured that air conditioning system is cleaned The science of work and specification；

Air conditioner cooling tower cleaning and sterilizing rule of operation, including the inspection of the scene of a crime with prepare, two steps of cleaning and sterilizing operation, specifically such as Under:

The first step: the inspection of the scene of a crime and preparation

Cooling tower normal operation carries out the inspection of the scene of a crime, and analysis practical situation makes the operation scheme of personalization；Prospecting personnel Personal protection need to be carried out, wear mask and protective eye lens；

Inspection of the scene of a crime emphasis: (1) check water-locator, filler, tower tray (water accumulating disc) and backwater drainage screen dirt, algae and corruption Degree of corrosion；(2) understand the situation of cooling tower moisturizing；(3) check whether water compensating valve, sewage draining valve intact or seepy question；(4) Solution cooling tower support extent of corrosion；(5) check whether exhaust outlet is directed at the problem (oil smoke can increase cleaning difficulty) of cooling tower； (6) write exploration report or suggestion, make a plan, prepare cleaning and sterilizing medicament, instrument and the equipment being suitable for.

Second step: cleaning and sterilizing operation

Using correct shutdown programm, close cooling tower and be set to Non-follow control；Close the fresh air inlet of air conditioner ventilating system, Close window in 30 meters of cooling tower periphery as far as possible, terminating to cleaning and sterilizing, to prevent the gas producing in operating process Colloidal sol gets in；Operator need to carry out personal protection, wears total length protective garment, waterproof boots, impermeable glove, protective eye lens, entirely Portion or half face mask are (with high efficiency filter or chemisorbed function, to prevent from sucking pathogenic microorganism and the high concentration of in the air Chlorine)；

1 chemical disinfections

(1) add chlorine-containing disinfectant in cooling tower, in view of the characteristic of disinfectant oxidative degradation, calculating according to tower inner volume makes just Beginning free chlorine residual reaches 50mg/l；Chlorine-containing disinfectant, should be granule or the liquid form of quick release；If there are serious deposition Thing can suitably increase chemical feeding quantity；Also dependent on practical situation, add other chemicals for example Biocidal algae-killing agent, mud remover, Greasy dirt detergent and defoamer etc.；(2) all chemosterilant species of record interpolation, dosing time started, measure and note down Free residual chlorine and ph value；(3) add in disinfectant 15min and add dispersion activating agent, to prevent biomembranous formation；Dispersion is lived Property agent should be added on the rapid position of current first with adding after water dissolution again, is conducive to quickly spreading, concentration is maintained at 1.2-3.0g/l；(4), after having added chlorine-containing disinfectant and dispersion activating agent, make cooling water circulation；In 2 hours starting, monitoring Once, chlorination makes free residual chlorine amount be maintained at more than 10mg/l for free residual chlorine and the every 15min of ph value, keeps ph value to exist simultaneously 7.5-8.0；Because too high ph value can reduce the biological efficiency of chlorine residue, when ph value is too high, can with interpolation its His chemical and physical phase compatible acid regulation, example hydrochloric acid or sulphuric acid；(5) after about 2 hours or free residual chlorine amount stable after 10mg/l, Continuous disinfection 24h, every 2 hours of period monitored a free residual chlorine amount and keeps it in more than 10mg/l；>=10mg/l dissociates Property residual chlorine amount it is ensured that after Disinfection Effect (6) the continuous disinfection 24h of continuous and effective, empty cooling tower；

2 mechanical chippings

The portions such as mechanical chipping cools down inner wall of tower, air outlet, fan and water flow through water-locator, filler, tower tray, drainage screen, tank Part, using top-down principle；(1) water-locator is cleaned out using shovel, punching depending on concrete situation；(2) air outlet, fan, mistake Filter screen, filler (inside and outside) take high-pressure spray to rinse；(3) tower tray, tank regard mud degree, rinse after the existing silt dredging of severity level, As long as otherwise rinsing well；(4) after mechanical chipping finishes, sewage treatment；

3 two chemical disinfections

Close blowoff valve, fill cooling water, press step " 1 " chemical disinfection again, sterilization heel row sky cooling tower water simultaneously fills again；

4 cooling water circulation displacement blowdowns

After cleaning and sterilizing, with the cooling water circulation pump circulation of system 4 ~ 6 hours, blowdown, should a large amount of as much as possible drainings and moisturizing enter Row system is replaced, and stops blowdown when turbidity drops to 10/below l (when draining is limpid), fills new water, prepares next step pre- Film；

The pre- film of 5 dosings operational maintenance

(1) after pre- film can make cleaning, the equipment especially after Chemical cleaning and pipeline are in the fresh gold under the state of activation On metal surface, previously generate one layer of complete and corrosion resistant protecting film before normal operation input；Add ph value first to adjust Agent, the ph value of system water is adjusted to 6.5～9.0；After water quality adjustment is good, add passivation film agent, start water pump circulation, according to Situation circulates 48～72 hours；Add anti-incrustation corrosion inhibitor, composite water stabilizer, the ph value of system circulation water is adjusted to 7.0 ～9.0 entrance day-to-day operations, and sample and carry out water quality detection；(2) configure Full-automatic agent-feeding device, make up what artificial dosing existed Not enough；(3) formulate regular visit scheme；

Effective meaning of the present invention: this air conditioner cooling tower cleaning and sterilizing rule of operation is the specification to the sector behavior, in principle Air conditioner cooling tower cleaning is required to accomplish " reconnaissance at criminal scene-once sterilizing-cleaning-secondary sterilization-displacement blowdown-pre- film-daily guarantor Support ", to guarantee to obtain good treatment effect, it is widely used in the cleaning and sterilizing of public place central air conditioning cooling tower；Cleaning Mechanism can design targetedly operation scheme on this basis.

Specific embodiment

A kind of rule of operation of air conditioner cooling tower cleaning and sterilizing is it is characterised in that comprise the following steps:

Step 1: the inspection of the scene of a crime and preparation, cooling tower normal operation carries out the inspection of the scene of a crime, and analysis practical situation makes individual character The operation scheme changed；Prospecting personnel need to carry out personal protection, wears mask and protective eye lens；Inspection of the scene of a crime emphasis: (1) checks water distribution Device, filler, tower tray (water accumulating disc) and backwater drainage screen dirt, algae and extent of corrosion；(2) feelings of cooling tower moisturizing are understood Condition；(3) check whether water compensating valve, sewage draining valve intact or seepy question；(4) understand cooling tower support extent of corrosion；(5) look into See whether exhaust outlet is directed at the problem (oil smoke can increase cleaning difficulty) of cooling tower；(6) write exploration report or suggestion, formulate meter Draw, prepare cleaning and sterilizing medicament, instrument and the equipment being suitable for；

Step 2: cleaning and sterilizing operation, using correct shutdown programm, close cooling tower and be set to Non-follow control；Close air-conditioning to lead to The fresh air inlet of wind system, closes window in 30 meters of cooling tower periphery as far as possible, terminating to cleaning and sterilizing, to prevent from grasping The aerosol producing during work gets in；Operator need to carry out personal protection, wears total length protective garment, waterproof boots, antiseepage Glove thoroughly, protective eye lens, the half face mask all or with high efficiency filter or chemisorbed function；

Step 3: a chemical disinfection,

(1) add chlorine-containing disinfectant in cooling tower, in view of the characteristic of disinfectant oxidative degradation, calculating according to tower inner volume makes just Beginning free chlorine residual reaches 50mg/l；Chlorine-containing disinfectant, should be granule or the liquid form of quick release；If there are serious deposition Thing can suitably increase chemical feeding quantity；Also dependent on practical situation, add other chemicals for example Biocidal algae-killing agent, mud remover, Greasy dirt detergent and defoamer etc.；

(2) all chemosterilant species of record interpolation, dosing time started, measure and note down free residual chlorine and ph value；

(3) add in disinfectant 15min and add dispersion activating agent, to prevent biomembranous formation；Dispersion activating agent should first be used Add again after water dissolution, be added on the rapid position of current, be conducive to quickly spreading, concentration is maintained in 1.2-3.0g/l；

(4), after having added chlorine-containing disinfectant and dispersion activating agent, make cooling water circulation；In 2 hours starting, more than monitoring free property Once, chlorination makes free residual chlorine amount be maintained at more than 10mg/l for chlorine and the every 15min of ph value, keeps ph value in 7.5-8.0 simultaneously； Because too high ph value can reduce the biological efficiency of chlorine residue, when ph value is too high, can be with other chemicals with interpolation Mutually compatible acid regulation, example hydrochloric acid or sulphuric acid；

(5) after about 2 hours or free residual chlorine amount stable after 10mg/l, continuous disinfection 24h, every 2 hours of period monitored once Free residual chlorine amount keeps it in more than 10mg/l；>=10mg/l free residual chlorine amount is it is ensured that the sterilization of continuous and effective Effect；

(6), after continuous disinfection 24h, empty cooling tower；

Step 4, mechanical chipping, mechanical chipping cools down inner wall of tower, air outlet, fan and water flow through water-locator, filler, tower tray, The parts such as drainage screen, tank, using top-down principle；

(1) water-locator is cleaned out using shovel, punching depending on concrete situation；

(2) air outlet, fan, drainage screen, filler (inside and outside) take high-pressure spray to rinse；(3) tower tray, tank regard mud degree, Rinse, as long as otherwise rinsing well after the existing silt dredging of severity level；

(4) after mechanical chipping finishes, sewage treatment；

Step 5, secondary chemical disinfection, close blowoff valve, fill cooling water, press step " step 1 " chemical disinfection again, after sterilization Emptying cooling tower water simultaneously fills again；

Step 6, cooling water circulation displacement blowdown, after cleaning and sterilizing, with the cooling water circulation pump circulation of system 4 ~ 6 hours, blowdown, should A large amount of as much as possible drainings and moisturizing carry out system displacement, when turbidity drops to 10/below l, when that is, draining is limpid, stop row Dirt, fills new water, prepares the pre- film of next step；

Step 7, the pre- film of dosing operational maintenance,

(1) after pre- film can make cleaning, the equipment especially after Chemical cleaning and pipeline are in the fresh gold under the state of activation On metal surface, previously generate one layer of complete and corrosion resistant protecting film before normal operation input；Add ph value first to adjust Agent, the ph value of system water is adjusted to 6.5～9.0；After water quality adjustment is good, add passivation film agent, start water pump circulation, according to Situation circulates 48～72 hours；Add anti-incrustation corrosion inhibitor, composite water stabilizer, the ph value of system circulation water is adjusted to 7.0 ～9.0 entrance day-to-day operations, and sample and carry out water quality detection；

(2) configure Full-automatic agent-feeding device, make up the deficiency that artificial dosing exists；

(3) formulate regular visit scheme.

Claims (1)

1. a kind of rule of operation of air conditioner cooling tower cleaning and sterilizing is it is characterised in that comprise the following steps:

Step 1: the inspection of the scene of a crime and preparation, cooling tower normal operation carries out the inspection of the scene of a crime, and analysis practical situation makes individual character The operation scheme changed；Prospecting personnel need to carry out personal protection, wears mask and protective eye lens；Inspection of the scene of a crime emphasis: (1) checks water distribution Device, filler, tower tray (water accumulating disc) and backwater drainage screen dirt, algae and extent of corrosion；(2) feelings of cooling tower moisturizing are understood Condition；(3) check whether water compensating valve, sewage draining valve intact or seepy question；(4) understand cooling tower support extent of corrosion；(5) look into See whether exhaust outlet is directed at the problem (oil smoke can increase cleaning difficulty) of cooling tower；(6) write exploration report or suggestion, formulate meter Draw, prepare cleaning and sterilizing medicament, instrument and the equipment being suitable for；

Step 2: cleaning and sterilizing operation, using correct shutdown programm, close cooling tower and be set to Non-follow control；Close air-conditioning to lead to The fresh air inlet of wind system, closes window in 30 meters of cooling tower periphery as far as possible, terminating to cleaning and sterilizing, to prevent from grasping The aerosol producing during work gets in；Operator need to carry out personal protection, wears total length protective garment, waterproof boots, antiseepage Glove thoroughly, protective eye lens, the half face mask all or with high efficiency filter or chemisorbed function；

Step 3: a chemical disinfection,

(1) add chlorine-containing disinfectant in cooling tower, in view of the characteristic of disinfectant oxidative degradation, calculating according to tower inner volume makes just Beginning free chlorine residual reaches 50mg/l；Chlorine-containing disinfectant, should be granule or the liquid form of quick release；If there are serious deposition Thing can suitably increase chemical feeding quantity；Also dependent on practical situation, add other chemicals for example Biocidal algae-killing agent, mud remover, Greasy dirt detergent and defoamer etc.；

(2) all chemosterilant species of record interpolation, dosing time started, measure and note down free residual chlorine and ph value；

(3) add in disinfectant 15min and add dispersion activating agent, to prevent biomembranous formation；Dispersion activating agent should first be used Add again after water dissolution, be added on the rapid position of current, be conducive to quickly spreading, concentration is maintained in 1.2-3.0g/l；

(4), after having added chlorine-containing disinfectant and dispersion activating agent, make cooling water circulation；In 2 hours starting, more than monitoring free property Once, chlorination makes free residual chlorine amount be maintained at more than 10mg/l for chlorine and the every 15min of ph value, keeps ph value in 7.5-8.0 simultaneously； Because too high ph value can reduce the biological efficiency of chlorine residue, when ph value is too high, can be with other chemicals with interpolation Mutually compatible acid regulation, example hydrochloric acid or sulphuric acid；

(5) after about 2 hours or free residual chlorine amount stable after 10mg/l, continuous disinfection 24h, every 2 hours of period monitored once Free residual chlorine amount keeps it in more than 10mg/l；>=10mg/l free residual chlorine amount is it is ensured that the sterilization of continuous and effective Effect；

(6), after continuous disinfection 24h, empty cooling tower；

Step 4, mechanical chipping, mechanical chipping cools down inner wall of tower, air outlet, fan and water flow through water-locator, filler, tower tray, The parts such as drainage screen, tank, using top-down principle；

(1) water-locator is cleaned out using shovel, punching depending on concrete situation；

(2) air outlet, fan, drainage screen, filler (inside and outside) take high-pressure spray to rinse；(3) tower tray, tank regard mud degree, Rinse, as long as otherwise rinsing well after the existing silt dredging of severity level；

(4) after mechanical chipping finishes, sewage treatment；

Step 5, secondary chemical disinfection, close blowoff valve, fill cooling water, press step " step 1 " chemical disinfection again, after sterilization Emptying cooling tower water simultaneously fills again；

Step 6, cooling water circulation displacement blowdown, after cleaning and sterilizing, with the cooling water circulation pump circulation of system 4 ~ 6 hours, blowdown, should A large amount of as much as possible drainings and moisturizing carry out system displacement, when turbidity drops to 10/below l, when that is, draining is limpid, stop row Dirt, fills new water, prepares the pre- film of next step；

Step 7, the pre- film of dosing operational maintenance,

(1) after pre- film can make cleaning, the equipment especially after Chemical cleaning and pipeline are in the fresh gold under the state of activation On metal surface, previously generate one layer of complete and corrosion resistant protecting film before normal operation input；Add ph value first to adjust Agent, the ph value of system water is adjusted to 6.5～9.0；After water quality adjustment is good, add passivation film agent, start water pump circulation, according to Situation circulates 48～72 hours；Add anti-incrustation corrosion inhibitor, composite water stabilizer, the ph value of system circulation water is adjusted to 7.0 ～9.0 entrance day-to-day operations, and sample and carry out water quality detection；

(2) configure Full-automatic agent-feeding device, make up the deficiency that artificial dosing exists；

(3) formulate regular visit scheme.