The Phan Thong Flood of 2026 (B.E. 2569): What Industry Needs to Know

According to reporting by Thansettakij on 5 and 6 October 2026 (B.E. 2569), the area around the Catholic church at Wat Hua Phai, Moo 1, Khok Khi Non subdistrict, and the Silakorn village, Moo 9, Phan Thong subdistrict, in Phan Thong district, Chonburi, had water from shin depth upward, and some residents had been living surrounded by standing floodwater since 24 September. The Phan Thong district chief explained that Phan Thong sits at the downstream end of the system: it receives water from Ban Bueng and Phanat Nikhom districts and from reservoirs before the water drains into the Bang Pakong River, and high sea tides push back against that flow (source: Thansettakij).

The national picture is just as serious. Data from the Department of Disaster Prevention and Mitigation as of 06:00 on 7 October 2026 (B.E. 2569) showed 27 provinces plus Bangkok affected, covering 123 districts and 984 subdistricts, with 1,154,875 households and more than 3.1 million people affected (source: Government Public Relations Department).

For manufacturers, these figures translate into very practical problems. When the communities around a plant are under water for weeks, many employees cannot get to work, access roads are cut, and raw-material trucks cannot get through. When the water finally recedes, what is left behind is mud, silt, musty odour and germs on production floors, locker rooms, canteens, toilets and car parks. All of it has to be dealt with before the lines can restart.

Example Case: The First Morning After the Water Fell at a Parts Plant in Phan Thong

This is an illustrative example case built from situations commonly seen at factories in flood-receiving areas. It does not describe any real company.

Wichai, maintenance manager at a mid-sized component plant in Phan Thong, wades through ankle-deep water to inspect the production hall for the first time since the level began to drop. The first thing he notices is a straight brown tide line on the walls at about mid-shin height. The epoxy floor that used to shine is dull and slippery. A musty smell mixed with stagnant water drifts out of the canteen and the staff toilets, and in the locker room dozens of pairs of shoes and work uniforms have been sitting in water for days.

Management wants the machines running within a week. Wichai has a crew of eight, two small hand-pump sprayers normally used for weed control along the fence line, and a pile of hoses. The area to cover, including the production hall, raw-material store, canteen, toilets, first-aid room and car park, adds up to several thousand square metres. A quick estimate tells him that disinfecting all of it with hand-pump sprayers after the mud is cleared would take his team several days, and that tired operators would leave patchy coverage.

The question Wichai has to answer at the evening management meeting is therefore not just "how do we clear the mud?" but "how do we get the whole plant clean and ready for staff to return with confidence as fast as possible?" That is where a motorised backpack mistblower such as the SOLO PORT 423 changes how the team thinks about the job.

Why Factories Need Large-Area Disinfection After a Flood

Floodwater that has passed through communities, drains, septic tanks and farmland carries many kinds of contamination into a factory building. When the water drains away, that contamination does not leave with it. It stays in the mud, in the stains on the walls, in the gaps around machines, on table legs and on surfaces that people touch all day. The main groups of germs to understand are these:

• Bacteria such as E. coli from sewage and Salmonella, both linked to diarrhoea and food poisoning, plus the risk of leptospirosis from Leptospira bacteria carried in the urine of rats and other animals, which can enter the body through cuts or mucous membranes when workers wade through water or mud.
• Viruses such as norovirus and rotavirus, which cause diarrhoea and vomiting and spread easily in canteens and shared toilets, as well as respiratory viruses like influenza and RSV, which spread more readily when large numbers of people return to work in enclosed spaces at the same time.
• Molds that grow quickly on gypsum walls, ceilings, wooden pallets, cardboard and insulation while humidity stays high for days after the flood, causing musty odours and potentially triggering allergies or asthma in staff.

For a factory, these are not individual risks but organisational ones, because hundreds of employees share the canteen, toilets, lockers and shuttle buses. A cluster of illness pushes absenteeism up immediately. Large-area disinfection after cleaning is therefore a preventive measure that costs far less than waiting for problems to appear.

One point must be clear: disinfection performance depends on the disinfectant, not on the sprayer. The machine's job is to distribute the product evenly and thoroughly. Factories should choose a properly registered disinfectant and use it at the concentration and contact time on its label, for example Chemgene HLD4H disinfectant, which WHD sells. Mud and dirt must always be removed first, because soil and organic matter greatly reduce how well any disinfectant works.

The Pain Points Your Financial Statements Do Not Show

1. The area is bigger than the workforce. A single production hall can cover thousands of square metres, before you count warehouses, the canteen, offices and outdoor yards. Disinfecting square metre by square metre with hand-powered tools eats up time and labour, while the same crew is also repairing machines and electrical systems.

2. Every day of downtime is a loss. One day without production means delayed orders, wages still paid, and the risk that customers move to another supplier. Letting disinfection become the final bottleneck before reopening is something no management team wants to accept.

3. Worker safety and hygiene. Employers are responsible for a safe working environment. Staff returning after a flood often worry about odour, mold and infections. Without visible measures, morale and trust drop.

4. Customer standards and audits. Plants making food, packaging, medical devices or parts for major brands face hygiene and quality-system audits. After a flood, customers often ask for evidence that the site has been systematically cleaned and disinfected. A documented, repeatable procedure matters.

5. Repeat flooding downstream. A district like Phan Thong, which receives upstream water and is affected by high tides, may face standing water again in future rainy seasons. Equipment that lasts for years is a better investment than an improvised fix every time.

Why Hand-Pump Sprayers, Hoses and Buckets Fall Short at Factory Scale

Most factories already have basic cleaning tools: pressure washers, mops, buckets and hand-pump garden sprayers. These are useful for mud removal, but once you move on to applying disinfectant across large areas, their limits become obvious.

• Hand-pump sprayers need constant pumping to keep pressure up. Droplets are coarse and uneven, reach is short, and the operator must walk up close to every surface. That wastes labour and chemical, and surfaces end up wet in patches rather than evenly coated.
• Buckets and wiping suit small areas but cannot reach high walls, the backs of racks, the underside of conveyors or roof structures properly.
• Pressure washers are great for removing dirt but poor for applying disinfectant: they use a lot of water, dilute the product and wash it away, and their force can kick contaminated spray into the air.
• Small trigger bottles are fine for high-touch points like door handles and desks but can never cover thousands of square metres.

The shared problem is scale. A factory needs a tool that lets one person cover a wide area in limited time, use chemical economically, and reach both horizontally and into high or distant corners. That is what a motorised backpack mistblower is designed for.

There is also a common mix-up to clear up. Many people search for a "thermal fogger" when they want to disinfect. A thermal fogger uses heat to create a fog. The SOLO PORT 423 is a different kind of machine: an air-blast mistblower that uses no heat. An engine-driven fan breaks the liquid into fine droplets and carries them a long way. That makes it well suited to applying disinfectant onto surfaces inside buildings and across wide spaces.

The Answer for Factories: the SOLO PORT 423 Backpack Mistblower from Germany

The SOLO PORT 423 is made by SOLO Kleinmotoren GmbH of Sindelfingen, Germany. It is a backpack mistblower powered by a single-cylinder two-stroke engine and built for jobs that need strong airflow over wide areas. The key figures are:

• Displacement: 72.3 cm³, according to SOLO manufacturer data
• Power: 3.0 kW / 4.1 HP, according to SOLO manufacturer data
• Spray-liquid tank: 12 L, according to SOLO manufacturer data
• Maximum airflow: 1,400 m³/h, according to SOLO manufacturer data
• Horizontal reach: about 12 m, according to SOLO manufacturer data
• Dry weight: about 11.0 kg, according to SOLO manufacturer data
• Sound pressure at the operator: 97 dB(A), according to SOLO manufacturer data
• 1.4 L fuel tank, BING float carburettor, electronic ignition and a Nikasil-coated cylinder, according to WHD product information
• ULV-type output with droplets below 30 microns VMD, which helps save chemical, according to WHD product information (actual droplet size depends on the nozzle and settings used)

At the heart of the machine is a high-volume fan that shears the liquid into a fine mist and throws it a long distance. Strong air carries droplets behind racks, under workbenches and onto structures above arm height that a hand pump cannot reach. One operator can walk the aisles of a production hall or warehouse and spray continuously without stopping to pump.

According to WHD product information, the unit comes with a long nozzle and a wide-angle diffuser, a rotatable spray tube, a UV-resistant translucent tank with a wide filler opening, a one-hand control lever combining throttle, dosing and stop, a padded harness and four-point anti-vibration mounts, all of which help crews work longer in more comfort. An overseas dealer lists the standard nozzles as a four-setting misting nozzle, a long-reach nozzle, a wide-angle grille and a double-sided deflector screen. For any other optional kits, ask the dealer directly.

WHD lists suitable sites including public areas, buildings, factories, shopping malls, schools, hospitals, greenhouses and vehicles, and positions the unit for government agencies and large organisations. That fits industrial plants well: big floor areas and an in-house team able to look after the machine.

10 Reasons Every Factory Maintenance Team Should Own a SOLO PORT 423

1. Cover more ground with fewer people. Up to 1,400 m³/h of airflow and roughly 12 m of horizontal reach, according to SOLO manufacturer data, let one operator cover far more area than several people with hand pumps.
2. Shorter production downtime. When disinfection is no longer the bottleneck, lines restart sooner, which matters most while customers are waiting.
3. Less chemical used. Fine ULV-type droplets, according to WHD product information, coat surfaces thinly and evenly instead of flooding them and running to waste.
4. Reach high places and deep corners. A rotatable tube and strong airflow take droplets up walls, onto racking and under machine frames.
5. No mains power needed. After a flood, building electrics usually need checking before use. A self-contained engine lets crews start immediately without dragging cables across wet floors.
6. German engineering. MAHLE and BING components and a Nikasil cylinder, according to WHD product information, are designed for sustained heavy use.
7. Useful every year, not only in floods. Beyond post-flood recovery, the machine serves routine sanitation such as scheduled disinfection of canteens, toilets and common areas.
8. Simple one-hand control. Throttle, dosing and stop on one lever let the operator adjust output instantly near sensitive areas.
9. Fits audit documentation. Owning the machine means you can write a standard procedure and log date, zone, chemical and operator as evidence for customer audits.
10. Local supplier support. Ask questions and request a SOLO PORT 423 quotation directly from WHD by phone or LINE.

Before and After: Factory Disinfection With a Backpack Mistblower

Step by Step: Disinfecting a Factory After the Flood

1. Check safety before entry. Have an electrician inspect and isolate wet zones, check the structure and any racking that could topple, and look for factory chemicals that may have leaked from containers. Cordon off anything still dangerous.
2. Remove and sort damaged items. Take out soaked raw materials, packaging, cardboard and wooden pallets, dispose of them under your waste procedures, and photograph everything for insurance.
3. Clear all mud and stains. Use shovels, brooms and pressure washers on floors, walls and machine bases. This is the most important step, because disinfectant performs poorly on surfaces that still carry mud.
4. Dry the building. Open doors and windows and use industrial fans or dehumidifiers as appropriate to reduce the chance of mold.
5. Choose a registered disinfectant. Read the label and safety data sheet (SDS) in full, dilute exactly as directed, and confirm the product suits your surfaces, such as metal, epoxy floors or food-contact areas.
6. Prepare the machine and the operator. Inspect the unit, refuel only with the engine off and cool, fill the tank, put on full PPE, and make sure everyone else has left the zone.
7. Spray zone by zone. Divide the site into zones such as production, storage, canteen, toilets, first-aid room and offices. Start at the far end and work back toward the exit, spray from top to bottom, and never spray directly into electrical cabinets or control panels.
8. Respect the contact time. Leave the disinfectant on surfaces for the time stated on the label, then wipe or rinse food-contact surfaces if the label requires it.
9. Ventilate and reopen. Let staff back in only after the re-entry time on the label has passed.
10. Record and schedule repeats. Log date, zone, product, dilution and operator, and plan repeat treatments of high-risk areas such as toilets and the canteen during the first weeks after reopening.

Safety When Using a Backpack Mistblower in a Factory

An engine-powered mistblower is a powerful tool and needs disciplined use. Safety officers can turn the points below into a standard operating procedure.

• Hearing protection every time. Sound pressure at the operator is 97 dB(A) and guaranteed sound power is 110 dB(A), according to SOLO manufacturer data. Operators must wear earmuffs or earplugs, and the task should fall under your hearing conservation programme.
• Limit continuous operating time. Vibration is up to 6.3 m/s², according to SOLO manufacturer data. Rotate operators and take regular breaks, even with the four-point anti-vibration mounts and padded harness.
• Chemical PPE as the label and SDS require. Chemical-resistant gloves, goggles or a face shield, a respirator suited to the product, long sleeves or coveralls, and boots.
• Refuel safely. Always switch off and let the engine cool before refuelling, outdoors, away from sparks, flames and the plant's flammable stores.
• Mind the weight. The unit weighs about 11 kg empty and roughly 23 kg or more with a full 12 L tank. Adjust the harness snugly, lift with good technique or with a helper.
• Keep people and animals out of the spray zone. Post signs and barriers, never spray toward people or into the wind, and keep spray away from uncovered food or drinking water.
• Follow re-entry times on the disinfectant label and ventilate before staff return.
• Train before real use. Operators should be trained in starting, dosing, emergency stop and basic maintenance, and should read the manufacturer's manual.

Anyone who waded through floodwater or cleaned mud and then develops fever, muscle pain (especially in the calves), diarrhoea or an infected wound should see a doctor promptly and mention the flood exposure. Disinfection is an environmental measure; it never replaces medical care.

Buy Your Own Machine or Hire a Service?

Factories with large sites, an in-house maintenance or safety team, and a need for regular disinfection, both after floods and in routine sanitation, benefit from owning a SOLO PORT 423 as permanent equipment: they can respond immediately, skip the queue and control quality themselves.

Smaller plants, or those without staff to look after a machine, can use WHD's disinfection spraying service as a separate option, in which the service team uses its own equipment and products. Many organisations combine both: a machine for routine work, plus the service when damage exceeds what the in-house team can handle.

Frequently Asked Questions

What is the SOLO PORT 423 price?

WHD does not publish a price online because it depends on quantity and order terms. Request a quotation on 065-556-6294 or LINE @whd268, which also suits factories that need a formal quote for purchase approval.

Can a backpack mistblower be used to disinfect a factory?

Yes. The machine distributes the disinfectant evenly; the disinfecting effect comes from the product you choose. Use a registered disinfectant suited to your surfaces, follow its label, and always remove mud first.

Is the SOLO PORT 423 a thermal fogger?

No. It is an air-blast mistblower driven by an engine fan. It does not use heat to make fog the way a thermal fogger does, which makes it well suited to applying liquid onto surfaces indoors and across wide areas.

How far does it spray and how much area can it cover?

Horizontal reach is about 12 m, according to SOLO manufacturer data. Daily coverage depends on your layout, obstacles and the label application rate, so trial a sample zone before planning the whole plant.

Do I need to clean mud before disinfecting after a flood?

Always. Mud and organic residue stop disinfectants from working properly. The right order is: remove damaged items, clear mud, dry out, then disinfect.

Which disinfectant should I use in a mistblower?

Choose a registered product whose label allows spray application, such as Chemgene HLD4H sold by WHD. Follow the label dilution and contact time and check compatibility with your materials.

How heavy is it, and can any staff member use it?

About 11 kg empty, according to SOLO manufacturer data, and roughly 23 kg or more with a full tank. Any trained operator can use it with a properly adjusted harness, and rotating operators reduces fatigue.

How loud is it and what protection is needed?

97 dB(A) at the operator, according to SOLO manufacturer data, so hearing protection is mandatory, together with the chemical PPE on the disinfectant label.

What if our factory does not want to buy a machine?

You can contact WHD's disinfection spraying service, a separate offering in which the team brings its own equipment. It suits one-off jobs or plants without a team to maintain a machine.

Help Your Plant Recover Faster After the 2026 (B.E. 2569) Floods

Get advice on the machine and disinfectant, and request a SOLO PORT 423 backpack mistblower quotation today.

View SOLO PORT 423 and Request a Price

Call 065-556-6294 | LINE @whd268

Related Reading and References

• SOLO Port 423 backpack mistblower against dengue outbreaks for municipalities and TAOs (Thai)
• Spraying against emerging diseases with the SOLO Port 423 for provincial public health offices (Thai)
• Chemgene HLD4H disinfectant
• WHD disinfection spraying service
• Phan Thong, Chonburi flood report, 2026 (B.E. 2569): Thansettakij
• National flood summary, 2026 (B.E. 2569): Government Public Relations Department
• Flood cleanup guidance: CDC