Provisions of the Minister of Industry-Handicraft on the discharge of Waste Water from Factories

Lao People'sDemocraticRepublic Peace Independence DemocracyUnity Prosperity Ministly ofIndustly-Handicraft PROVISIONS OF THE MINISTER OF INDUSTRY-HANDICRAFf ON THE DISCHARGE OF WASTE WATER FROM FACTORIES No. 180/IH Pursuant to the Notice No. 1675/0CCM, dated 29/11/91 on. the promulgation ofthe MinisterialDecision on Factories. Based on the authoritymentionedin Article4, Article 36, point (f) of the Minister ofIndustry-Handicraft's Decisionon Factories. The Minister of'Industry-Handicraft issues the following. provisions : PART I GeneralPrinciples Article 1 - These Provisions aim at controlling the discharge ofwaste water from factories liable to impact on the environment, such as: water quality,health of humans and other animateobjects. Article 2 - Definition Waste: Any solid waste, water waste, polluted air, poisonous substances or hazardous objects, includingsilted waste therefromeither in solid, liquid or gas fonn.. General waste water treatment: refers to the treatment systemsinstalledin one place servicinga group offactories discharging waste water. Concentrate: refers to any pollutionsubstance containedin the water dischargedfrom factories, generally denominated in mg/l. Department Director: refers to the Director of the Industry-Handicraft . Department. Decision on Factories: refers to the Decision No. 103II.H., dated 21/12/1992, ofthe Minister ofIndustry-Handicraft on Factories. Factory water discharge: refers to waste water which quality has been reduced from production process in factories, from washing, cleaning, boiling, freezing system or other sources, except from sanitation systems. Waste water discharging from factories: refers to the discharge ofwaste water from factories at the water discharge point of factories. Water discharge outlet: refers to the point where waste water is discharged from factories out of the factories' area Waste water treatment system of the factory: refers to the factories' waste . water treatment installed in their own premises for the treatment of the waste water produced by factories which is to be discharged Public drainage canal: refers to canals or pipes installed in public areas. Surface water: refers to streams, sources, lakes, marshlands. BDOs: Biochemical Oxygen Demand, that is the measurement ofbio substances' quantity under the form ofrequired oxygen for oxidation ofthe said substance in water by bacteria within 5 days in 20°C temperature. TSS: Initials of Total suspended solids, that is solid non-oxydable substances suspended in water. PARTll Waste discharge into the environment 2 Article 3 : It is forbidden to discharge waste from factories into the environment, public water sources liable to cause negative impacts or direct and indirect hazards to the ecosystem and the health ofhumans, such as: 3.1 Any waste composed of solid, liquid or gas poisonous or degraded substances. 3.2 Any type ofwaste with a pH ofless than 6 and above 9.5. 3.3 Any type ofwaste which size or volume would hamper the water flow, disturb the utility ofwater use, such as : asphalt, animal corpse, degrading waste, ashes, sand, mud, thatch, vegetable waste, metal, glass, tomfabrics, animal fur, crude oil, plastic, wood, blood, animal ash, bone, hair, paper waste or other similar products in their original forms or grounded with waste grinders or any other methods. 3.4 Crude oil or products distilled from oil. 3.5 Oil spills which may not be biologically oxidized 3.6 All types of waste sending strong smells into the natural environment disturbing the neighbors. 3.7 All types of chemicals causing poisonous gas. 3.8 All types of chemicals containing nuclear activity. 3.9 All types ofwaste from paint an causing the surface water to change its color and disturbing the neighbors. 3.10 Waste with temperatures exceeding 40°C. Article 4: Concentrate standard for certain types offactories. 1. Sugar mill : Components Value (not exceeding) 3 BODs 60 mg/l ISS 100 mg/l pH Between 6-9.5 2. Iextile and gannent factory : Components Value (not exceeding) BODs 40 mg/l Phenols 1 mg/l ISS 40 mg/l pH Between 6-9.5 3. Pulp and paper mill : Pulp factory : Components Value (not exceeding) BODs 90 mg/l ISS 60 mg/l Ammonia Nitrogen 7mg/l Phenols 1 mg/l pH Between 6-9.5 Paper mill : Components Value (not exceeding) BODs 30 mg/l ISS 30 mg/l 4 pH IBetween 6-9.5 4. Slaughterhouse: Components Value (not exceeding) BODs 40 mg/l TSS 40 mg/l Ammonia 4mg/l pH Between 6-9.5 5. Other standards General and specific standards for factories. General : 5 Parameter Value Parameter Value Arsenic 0.25 mg/l Manganese 1.0 mg/l Barium 1.0 mg/l Mercury 0.005 mg/l Cadmium 0.03 mg/l Ammonia Nitrogen 4.0mg/l Chrome (+6) 0.1 mg/l Nickel 0.2mg/l Total Chromium 0.5 mg/l Oil and grease 5mg/l Chloride 500 mg/l pH 6-9.5 Copper 0.5 mg/l Phenols 0.3 mg/l Cyanide 0.10 mg/l Phosphorous 1.0 mg/l Fluoride 15 mg/l Silver 0.1 mg/l Iron 2.0 mg/l IDS 3,500 mg/l 6 Lead 0.2 mgll TSS 30 mgll BODs 30 mgll Zinc 1.0 mgll Free Chlorine 1.0 mgll Sulphide 1.0 mgll Specific: For factories with organic substances Parameter Type of industry BODs TSS (not pH (Between) exceeding) Production offish cans 40 50 6-9.5 Brewery 30 30 6-9.5 Flour 70 80 6-9.5 Tannery 40 40 6-9.5 Paint production 40 40 6-:-9.5 Pharmaceutical 40 40 6-9.5 Factories with inorganic substances: Iron forging with electricity Parameter Value (not exceeding) TSS 30 mgll Cyanide 0.2 mgll Chrome +6 0.3 mgll Total Chrome 2.0 mgll Nickel 0.2 mgll Copper 1.0 mgll Zinc 5.0 mgll TotalMetals 6.0 mgll Oil and Grease 30 mgll pH Between6-9.5 Production of batteries : Parameter Value(notexceeding) Lead 0.2mgll Copper 0.5 mg/l Zinc 1 mg/l Antimony Imgll Cadmium 0.03 mg/l Chromium 0.5 mgll Nickel 1.0mgll Mercury 0.005 mgll pH Between6-9.5 Article 5: Restaurants, garages, hospitals, foodprocessing centers with less than 10 workers: a Treatedwaste watermay be discharged into waterreserves for the separation of oil, floating greaseand others(except paper, plastic). The designof such reserve shall-be appropriate with the conditions of use. b. It is forbidden to discharge waste containing viruses, solidwaste into public drainage canals. Article 6: Grease, oil and sand sieving equipment shall be installedto control liquid waste containing substantial volume of floating grease or solidinorganic substances or inflammable waste, sandor otherhazardous substances. In 7 retaining grease and solid waste, the factory owner shall be responsible for their disposal or discharge through appropriate methods. PARTID Factory water waste treatment system Article 7: Factory owners shall install systems for the treatment ofwaste water originating from the production process within the factory'spremises, Article 8: Factories possessing their own waste water treatment systems may connect them to the common waste water treatment system in accordance-with these Provisions. Article 9: Expenses incurred for the construction and installation ofwaste water treatment systems shall be taken in charge by the factory owners, including the costs for inspection and waste water analysis. Article 10: Waste water from sanitation sources shall be separated from waste water generated from production through existing methods, such as : septic tanks, water basins 0 other appropriate methods. Article 11 : Waste water treatment system shall operate and be maintained on a continuous basis for consistent highest efficiency and factory owners shall take in charge all the expenses. Article 12: Waster water treatment systems shall be appropriately installed with a facility to collect water sample for analysis. PART IV Authority of the Industrial Sector Article 13 : Assigned factory inspectors possessing inspection cards issued by the Minister may enter all premises for inspection, observation, measurement, sample collection and waste water discharge testing in accordance with the content of these Provisions. 8 9 Article 14: Authorized factory inspectors may gatherinformation on factory processespertainingto the type and sourceofwaste water discharge. Article 15: When performing their duty in factories, factory inspectorsshall apply the safety rules applicable in and as outlined by the factories. Article 16: The DepartmentDirectorand Chiefof the local IndustryService may order the suspension ofwastewater discharge from factories until such factories have broughtimprovements in accordance with the regulations. Article 17: Factory owners receiving noticeson the suspension ofwaste water discharge shall immediately stop any discharge ofwaste water from their factories. In case of voluntary non-compliance to the instructions, the DepartmentDirector and Chiefoflocal Industry Services shall applynecessary sanctions for the proper enforcement of such instructions. Article 18: These Provisions are effective fromthe day they are signed The content offormerly issued provisions, instructions inconsistent with these Provisions are supersededand replacedby theseProvisions. Article 19: The Departmentof Industry-Handicraft and local IndustryServices are entrustedto providerecommendations on the proper and complete implementation of these Provisions. Vientiane, 3 November 1994 Ministerof Industryand Handicraft Soulivong Daravong