ARBOK-Latex (ARBOK-AZOW applied to natural rubber / latex effluent)

Overview

Every tonne of processed rubber leaves 20–35 m³ of effluent behind. Latex concentrate effluent carries COD up to 27,000 mg/L; skim-latex serum reaches 43,000 mg/L. The river discharge limit is 200–400 mg/L, so a plant must cut pollution by up to 200-fold before releasing water outside the fence.

The industry does reduce organics — ponds, UASB, activated sludge and membranes can take COD and BOD down by 95%. The unsolved part is nitrogen. Latex is stabilised with ammonia, and ammonia and nitrogen are what nobody removes, at any price: even the best systems leave a 30–45% nitrogen tail. The plant formally "cleaned the water" while the neighbouring village still complains about the smell and the regulator still writes the fine.

ARBOK-AZOW does not treat this water — it separates it. Cold vacuum evaporation physically takes the flow apart into clean water and dry residue: no membranes, no consumables, roughly 0.7 kWh per tonne, zero discharge. 100% of the water returns to production, and the latex that today goes into the effluent goes back into the product. For a mid-size plant this converts effluent handling from a loss of about –$0.2–0.4 M/year into a gain of $2–3 M/year.

Applications

Natural rubber processing plants and latex concentrate producers in Southeast Asia — Malaysia, Thailand, Indonesia, Vietnam, the heart of global latex and glove production. Glove factories currently running reverse osmosis. Plants under Malaysian and Vietnamese water-pollution enforcement, where ammonia and odour exceedances draw fines after residents' complaints. Sites operating biogas digesters that still hold the same volume of stinking residue after gas offtake. Plants sitting on 2–4 ha of lagoon mirror they would rather use for production or sale.

Operating Principle

The unit is not a filter and not another lagoon in a chain of ponds, chemicals and membranes. Vacuum turns the water inside the unit into vapour at room temperature — the process runs at ambient temperature, no heat is supplied. Under vacuum the solubility of gases falls to zero, so H₂S and ammonia leave along separate routes rather than into the air over the village. Each gas is captured and turned into a commodity: ammonia into a nitrogen product, hydrogen sulfide into sodium sulfide / hydrosulfide (Na₂S/NaHS), a commodity at $300–600 per tonne.

ARBOK rots nothing and feeds no bacteria. It splits the ingredients by density and discharges them dry at 10–15% moisture: rubber/latex, nitrogen product, sulfur, organic residue. The water condenses back rather than being thrown into the air, so nothing is lost.

What the incumbent methods leave behind, and why the industry needs this:

• Lagoons. Nominal cost about $0.26/m³, but the plant keeps paying in land (hectares of lagoon mirror, more than 30 days of rotting for settling), in smell (anaerobic gas is 10–12% hydrogen sulfide) and in nitrogen, which ponds barely touch. A lagoon is a collector of rot by design; the smell is its standard working product.
• Reverse osmosis. Membranes clog with latex, need constant replacement, chemical washing, high pressure and much energy. 60–70% of the incoming flow leaves as a hazardous concentrate at doubled poison concentration, with nowhere to go — sewer discharge prohibited, leaving evaporation ponds or surface water. High CAPEX, high OPEX, endless consumables.
• Biogas. Partly justified where it cuts energy cost, but latex is a difficult substrate: sulfates and ammonia poison the process, requiring co-digestion with palm effluent and desulfurization. After gas offtake the same volume of stinking waste still has to be disposed of. It does not make the water cleaner.

Key Parameters

| Parameter | Value |

|---|---|

| Process temperature | ambient — vacuum vaporises the water at room temperature, no heat supplied |

| Energy consumption | ~0.7 kWh per tonne of effluent |

| Comparison: membranes | 10–15× higher energy than ARBOK |

| Comparison: activated sludge | ARBOK is below what aeration alone consumes |

| Water recovery | 100% of the flow, returned to production |

| Recovered water quality (laboratory measurement) | COD below 5 mg/L; ammonia zero; bacteria and microplastics zero |

| Effluent generated per tonne of processed rubber | 20–35 m³ |

| Inlet COD, latex concentrate effluent | up to 27,000 mg/L |

| Inlet COD, skim-latex serum | up to 43,000 mg/L |

| River discharge limit | 200–400 mg/L |

| Nitrogen tail left by best conventional systems | 30–45% |

| Dry product moisture | 10–15% |

| Rubber content of skim latex | 4–8% |

| DOC (Dry Organic Chips) calorific value | 14 MJ/kg — half the calorific value of coal |

| Unit capacity | one container unit per 200 tonnes of effluent per day |

| Membranes, chemicals, consumables | none |

| Discharge | zero |

Architecture and Components

Containerised unit rated at 200 tonnes of effluent per day; scale is grown by adding units. Vacuum chamber where the liquid vaporises at room temperature; condensation loop returning clean water to production; separate gas routes for H₂S and ammonia with capture into Na₂S/NaHS and a nitrogen product; density-based separation of the residue into rubber/latex, nitrogen product, sulfur and organic residue, discharged dry at 10–15% moisture; conversion of the organic residue into DOC (Dry Organic Chips). No membrane modules, no chemical dosing, no lagoons — the pond disappears as a class.

Advantages

Technical. One pass closes all of the industry's tasks at once: COD carried away by orders of magnitude, ammonia and nitrogen removed at the level of the operating principle, odour eliminated because neither ammonia nor hydrogen sulfide remains. 100% water return, not 80% and not "within the norm" — and the returned water is cleaner than a mountain stream by the laboratory figures. No consumables means OPEX does not grow over time.

Economic. Latex that today goes into the effluent and has accumulated in thick layers at the bottom of lagoons goes back into production, so product yield itself rises. Water intake cost is eliminated. Hydrogen sulfide and ammonia become saleable products rather than emissions. DOC gives fuel for own needs.

Regulatory. Malaysia has raised the ceiling on water-pollution fines 100-fold in recent years — to roughly $2.5 M per single incident, plus a mandatory prison term. Vietnam has tightened standards for all plants without exception and already punishes ammonia and odour exceedances after residents' complaints. A technology that physically leaves no ammonia and no smell removes that risk from the balance sheet: no smell, no neighbours' complaints, no regulator visit.

Land. Lagoons at a typical plant occupy 2–4 ha of mirror surface. ARBOK frees that land for production or sale.

Complementarity. Where biogas already exists it is kept as additional income — methane gives electricity and ARBOK finishes the residue into DOC.

Integrations

ARBOK-RUBBER · ARBOK-HS (Hydrogen Sulfide Capture) · ARBOK-Ammonia · Arbok-ZWD Gasification · ARBOK-EFFLUENT · Arbok-PO (Palm-Oil)

Retrofits onto an existing plant in place of the lagoon system, and stacks on top of an existing biogas installation rather than replacing it.

Deployment & Operation

Containerised deployment on the plant site, one unit per 200 tonnes of effluent per day, scaled by unit count. Lagoons are no longer needed at all. Operation consumes electricity only — zero membranes, zero chemistry, zero replacements.

Commissioning sequence, staffing and utility hook-up requirements: [требует уточнения из базы]

TRL

TRL 8 — проставлен Михаилом 2026-08-06.

Market Potential

Southeast Asia produces the world's rubber, and the industry is worth tens of billions. Across the region the latex dumped into rivers today is on the order of $0.5–0.7 billion per year — half a billion dollars rots in lagoons every year.

Three vectors have converged. Regulators have raised the stakes 100-fold. Water is getting more expensive. And the niche is held by 19th–20th-century technologies, each of which devours energy and leaves a toxic tail — up to about 70% of the incoming flow carrying nitrogen, hydrogen sulfide and concentrate. In essence they do not clean; they halve the volume while doubling the concentration. No incumbent player returns all the water, removes the ammonia and gives back the latex.

Typical Project Economics

Reference: mid-size plant, ~30,000 t of rubber per year

| Item | Effect |

|---|---|

| Land released (2–4 ha of lagoons) | one-time $1–5 M of frozen capital freed |

| Fine risk removed | up to $2.5 M per discharge incident plus shutdown — moved from minus to zero |

| Consumables vs membranes | saving of $0.1–0.3 M/year |

| Water: 100% return, ~750,000 m³/year | ≈ $0.4 M/year on water intake alone |

| Latex recovery (~3% losses, rubber at ~$2.3/kg) | ≈ $2 M/year — direct revenue, not saving |

| DOC fuel (14 MJ/kg) | ~$30–50/t for own needs |

| Na₂S/NaHS from captured H₂S | commodity at $300–600 per tonne |

| Baseline: current operation and disposal | ≈ –$0.2–0.4 M/year |

| With ARBOK | +$2–3 M/year |

| Combined annual effect | ≈ $2.5–3 M/year (latex + water + fuel + removed fine risk), excluding the one-time land release |

Lagoon cost of $0.26/m³ is a false coordinate system: it does not include land, odour, nitrogen or the deferred $2.5 M fine. With reverse osmosis the real figure is significantly above $0.26/m³ once consumables and concentrate handling are counted.

Risk Factors

The industry evaluates treatment in $/m³, a metric under which lagoons look cheap and ARBOK's change in the cost and revenue structure is invisible — adoption requires the buyer to abandon that coordinate system. Incumbent methods are entrenched despite being known to perform poorly, and plants are accustomed to assembling treatment from three or four compromised stages. Where reverse osmosis is already installed, sunk CAPEX competes against replacement. Sulfates and ammonia in latex effluent are aggressive: H₂S in moisture turns into acid and eats away equipment, which is a materials constraint for any plant handling this stream.

Site-specific limits, feed variability tolerance, maintenance intervals and failure modes of the unit: [требует уточнения из базы]

Related Technologies

ARBOK-RUBBER · ARBOK-HS (Hydrogen Sulfide Capture) · ARBOK-Ammonia · ARBOK-EFFLUENT · Arbok-ZWD Gasification · ARBOK-Palm Solid Fuel (PSF)